技术领域technical field
本发明涉及传动装置领域，具体而言涉及一种齿轮齿条机构、推门装置、冰箱及门。The invention relates to the field of transmission devices, in particular to a rack and pinion mechanism, a door pushing device, a refrigerator and a door.
背景技术Background technique
齿轮齿条传动机构广泛应用于机械传动中，可将电机的旋转运动转化为齿条的直线运动。The rack and pinion transmission mechanism is widely used in mechanical transmission, which can convert the rotational motion of the motor into the linear motion of the rack.
冰箱门或其他门开启过程需要对门板、门框施加一个推力将门推开。尤其对于冰箱门，其门框四周设置的密封条在冰箱门关闭状态下产生负压，冰箱门打开的过程中需要由开门装置提供足够的推力，驱动冰箱门与门框分离。这种推出结构可以由齿轮齿条实现。为了限制齿条的运动范围避免其脱落，需要将齿条上一个或若干位置设计为定位位置，齿轮带动齿条运行至定位位置时，齿条定位而不受齿轮运转状态影响。In the process of opening the refrigerator door or other doors, a push force needs to be applied to the door panel and the door frame to push the door open. Especially for the refrigerator door, the sealing strip arranged around the door frame generates negative pressure when the refrigerator door is closed, and the door opening device needs to provide enough thrust to drive the refrigerator door to separate from the door frame when the refrigerator door is opened. This push-out structure can be realized by a rack and pinion. In order to limit the range of movement of the rack and prevent it from falling off, it is necessary to design one or several positions on the rack as positioning positions. When the gear drives the rack to move to the positioning position, the positioning of the rack is not affected by the running state of the gear.
这种定位，目前仅能够通过设置在齿轮齿条外部的相对独立的结构实现，或者通过软件控制对齿轮的驱动实现。但是，软件控制容易出现算法故障或异常，而且软件控制通常需采用步进电机或伺服电机才能实现，步进电机或伺服电机的使用会增加齿轮齿条传动机构的成本；而独立设置的浮动回程装置又需要额外的安装空间。若需要压缩浮动回程装置的体积，则需要独立设置的浮动回程装置能够承受更大的扭矩，其材料成本较高。This positioning can only be realized by a relatively independent structure arranged outside the rack and pinion, or by driving the gear through software control. However, software control is prone to algorithm failure or abnormality, and software control usually needs to use stepper motors or servo motors to achieve, the use of stepper motors or servo motors will increase the cost of the rack and pinion transmission mechanism; The device in turn requires additional installation space. If the volume of the floating return device needs to be compressed, it is required that the independently provided floating return device can bear a larger torque, and its material cost is relatively high.
发明内容Contents of the invention
本发明针对现有技术的不足，提供一种齿轮齿条机构、推门装置、冰箱及门，本发明能够通过齿条推动门体打开并使得齿条在设定的回程点定位，防止齿条松脱同时简化对齿条的控制、缩小推门装置的体积。本发明具体采用如下技术方案。Aiming at the deficiencies of the prior art, the present invention provides a rack and pinion mechanism, a door pushing device, a refrigerator and a door. The present invention can push the door body to open through the rack and position the rack at the set return point, preventing the rack from Loosening simultaneously simplifies the control of the rack and reduces the volume of the door pushing device. The present invention specifically adopts the following technical solutions.
首先，为实现上述目的，提出一种齿轮齿条机构，其包括浮动回程装置，所述浮动回程装置设置在齿条的啮合齿的端部，齿轮位于所述浮动回程装置的上方时，齿轮与啮合齿之间脱离啮合或重新啮合。First, in order to achieve the above object, a rack and pinion mechanism is proposed, which includes a floating return device, the floating return device is arranged at the end of the meshing teeth of the rack, when the gear is located above the floating return device, the gear and Disengagement or re-engagement between meshing teeth.
可选的，上述齿轮齿条机构，其中，第一状态下，所述齿轮在所述浮动回程装置的上方旋转，所述齿轮与所述齿条之间脱离啮合，所述齿条定位；第二状态下，所述浮动回程装置的上端至少部分地抵接所述齿轮，推动所述齿轮与所述齿条的啮合齿重新啮合，驱动所述齿条。Optionally, the above rack and pinion mechanism, wherein, in the first state, the gear rotates above the floating return device, the gear is disengaged from the rack, and the rack is positioned; In the second state, the upper end of the floating return device at least partially abuts against the gear, and pushes the gear to re-engage with the meshing teeth of the rack to drive the rack.
可选的，上述齿轮齿条机构，其中，所述齿轮沿所述齿条以第一方向旋转至所述浮动回程装置上方时，该浮动回程装置处于第一状态；所述齿轮在该浮动回程装置上方相对该浮动回程装置以第二方向旋转时，该浮动回程装置处于第二状态；所述第一方向与所述第二方向相反。Optionally, the above-mentioned rack and pinion mechanism, wherein, when the gear rotates above the floating return device in the first direction along the rack, the floating return device is in the first state; When the top of the device rotates in a second direction relative to the floating return device, the floating return device is in a second state; the first direction is opposite to the second direction.
可选的，上述齿轮齿条机构，其中，所述浮动回程装置包括回程控制头；所述第一状态下，所述齿轮沿第一方向旋转时，齿轮的轮齿反复按压所述回程控制头的上端面，反复驱动所述回程控制头向下移动；第二状态下，所述齿轮以第二方向旋转时，从所述齿条的传动方向抵接所述回程控制头的上端侧部，所述齿轮由所述回程控制头推动而啮合所述回程控制头旁边的啮合齿，驱动所述齿条。Optionally, the rack and pinion mechanism above, wherein the floating return device includes a return control head; in the first state, when the gear rotates in the first direction, the teeth of the gear repeatedly press the return control head The upper end surface of the backstroke control head is repeatedly driven to move downward; in the second state, when the gear rotates in the second direction, it abuts against the upper end side of the backstroke control head from the transmission direction of the rack, The gear is pushed by the return control head to engage with the meshing teeth next to the return control head to drive the rack.
可选的，上述齿轮齿条机构，其中，所述回程控制头的上端面向上倾斜，所述第一状态下，所述齿轮沿第一方向旋转时，齿轮轮齿的远端与所述回程控制头的上端面相切滑动，驱动所述回程控制头向下。Optionally, the above rack and pinion mechanism, wherein, the upper end of the return control head is inclined upward, and in the first state, when the gear rotates in the first direction, the distal end of the gear tooth is in contact with the return The upper face of the control head slides tangentially, driving the return control head downward.
可选的，上述齿轮齿条机构，其中，所述回程控制头的上端面的高度顺所述齿轮旋转的第一方向由低过渡至高。Optionally, in the rack and pinion mechanism above, the height of the upper end surface of the return control head transitions from low to high along the first direction of rotation of the gear.
可选的，上述齿轮齿条机构，其中，所述浮动回程装置包括弹性件，所述回程控制头安装在弹性件上。Optionally, the rack and pinion mechanism above, wherein the floating return device includes an elastic member, and the return control head is mounted on the elastic member.
可选的，上述齿轮齿条机构，其中，所述齿条内还设置有安装槽，所述弹性件为弹性伸缩件，所述弹性伸缩件安装在所述安装槽内，所述弹性伸缩件的下端与所述安装槽的底面固定，所述弹性伸缩件的上端固定于所述回程控制头的下端，所述回程控制头在所述弹性伸缩件的弹性作用下沿所述安装槽上下浮动。Optionally, the above rack and pinion mechanism, wherein, an installation groove is also provided in the rack, the elastic element is an elastic expansion element, the elastic expansion element is installed in the installation groove, and the elastic expansion element The lower end of the elastic expansion part is fixed to the bottom surface of the installation groove, the upper end of the elastic expansion part is fixed to the lower end of the return control head, and the return control head floats up and down along the installation groove under the elastic action of the elastic expansion part .
可选的，上述齿轮齿条机构，其中，所述弹性件为一悬臂，所述悬臂的一端与所述齿条的侧壁固定，所述悬臂的另一端与所述回程控制头的侧端连接，所述回程控制头在所述悬臂的弹性作用下相对所述齿条的啮合齿所在平面上下浮动。Optionally, the rack and pinion mechanism above, wherein the elastic member is a cantilever, one end of the cantilever is fixed to the side wall of the rack, and the other end of the cantilever is fixed to the side end of the return control head connected, the return control head floats up and down relative to the plane where the meshing teeth of the rack are located under the elastic action of the cantilever.
可选的，上述齿轮齿条机构，其中，所述齿条上部挖空形成所述回程控制头，所述弹性件为一悬臂，所述悬臂的一端与所述齿条的顶部连成一体，所述悬臂另一端与所述回程控制头连成一体，所述回程控制头在所述悬臂的弹性作用下相对所述齿条的啮合齿所在平面上下浮动。Optionally, the above rack and pinion mechanism, wherein the upper part of the rack is hollowed out to form the return control head, the elastic member is a cantilever, and one end of the cantilever is integrated with the top of the rack, The other end of the cantilever is integrated with the return control head, and the return control head floats up and down relative to the plane where the meshing teeth of the rack are located under the elastic action of the cantilever.
可选的，上述齿轮齿条机构，其中，所述齿条的两端分别设置有2个所述浮动回程装置，2个所述浮动回程装置分别为所述齿条提供定位，限制所述齿轮相对所述齿条在2个所述浮动回程装置之间运动。Optionally, the above rack and pinion mechanism, wherein two ends of the rack are respectively provided with two floating return devices, and the two floating return devices provide positioning for the rack respectively, limiting the gear Moves between 2 of said floating return devices relative to said rack.
同时，为实现上述目的，本发明还提供一种推门装置，其包括上述任一所述的齿轮齿条机构。At the same time, in order to achieve the above object, the present invention also provides a door pushing device, which includes any one of the rack and pinion mechanisms described above.
基于上述方案，本发明还提供一种冰箱，该冰箱的冰箱门上安装上述的推门装置或齿轮齿条机构。Based on the above solution, the present invention also provides a refrigerator, wherein the door pushing device or the rack and pinion mechanism is installed on the door of the refrigerator.
同时，本发明还提供一种门，该门上安装有上述的推门装置或齿轮齿条机构。At the same time, the present invention also provides a door on which the above-mentioned door pushing device or rack and pinion mechanism is installed.
有益效果Beneficial effect
本发明在齿条的啮合齿的端部的浮动回程装置。该浮动回程装置其处于第一状态时，所述齿轮与所述齿条之间脱离啮合以实现对齿条的定位；所述浮动回程装置处于第二状态时，所述浮动回程装置其上端至少部分地抵接所述齿轮，推动所述齿轮与所述齿条重新啮合，进而驱动所述齿条传动。本发明能够通过在齿条行程的回程点设置上述浮动回程装置，使得由普通电机所驱动的齿轮也能够自动的在该回程点脱离与齿条的啮合，及时停止齿条传动，使齿条停留在原有位置而实现准确定位。当该电机反转时，本发明又能在浮动回程装置的作用下，自动的使得该齿轮从定位面中脱离而与齿条正常啮合实现传动。The present invention is a floating return device at the end of the meshing teeth of the rack. When the floating return device is in the first state, the gear is disengaged from the rack to realize the positioning of the rack; when the floating return device is in the second state, the upper end of the floating return device is at least Partially abuts the gear, pushing the gear to re-engage with the rack, thereby driving the rack drive. The present invention can set the above-mentioned floating return device at the return point of the rack stroke, so that the gear driven by the ordinary motor can also automatically break away from the meshing with the rack at the return point, stop the rack drive in time, and make the rack stay Accurate positioning is achieved at the original position. When the motor reverses, the present invention can automatically make the gear disengage from the positioning surface and normally engage with the rack to realize transmission under the action of the floating return device.
本发明的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention.
附图说明Description of drawings
附图用来提供对本发明的进一步理解，并且构成说明书的一部分，并与本发明的实施例一起，用于解释本发明，并不构成对本发明的限制。在附图中：The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and together with the embodiments of the present invention, are used to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:
图1是本发明的齿轮齿条机构处于第一状态下的示意图；1 is a schematic diagram of the rack and pinion mechanism of the present invention in a first state;
图2是本发明的齿轮齿条机构处于第二状态下的示意图；2 is a schematic diagram of the rack and pinion mechanism of the present invention in a second state;
图3是本发明中齿条结构的整体示意图；Fig. 3 is the overall schematic diagram of rack structure in the present invention;
图4是本发明中第二种实现方式下浮动回程装置的结构示意图；Fig. 4 is a schematic structural diagram of a floating return device in a second implementation mode in the present invention;
图5是本发明中第三种实现方式下浮动回程装置的结构示意图；Fig. 5 is a schematic structural diagram of a floating return device in a third implementation mode of the present invention;
图6是应用本发明的齿轮齿条机构的一种推门装置的剖视图；Fig. 6 is a sectional view of a door pushing device applying the rack and pinion mechanism of the present invention;
图7是应用本发明的齿轮齿条机构的一种推门装置的立体图。Fig. 7 is a perspective view of a door pushing device applying the rack and pinion mechanism of the present invention.
图中，1表示齿轮，2表示齿条，22表示定位面，23表示末齿，24表示定位面的起始端，25表示驱动齿，3表示浮动回程装置，31表示回程控制头，32表示安装槽的底面，33表示轮齿的远端，34表示弹性伸缩件，35表示悬臂，40表示第一驱动装置，41表示第一传动装置；42表示轴承块，43表示第一传动齿轮，44表示第二传动齿轮，45表示第三传动齿轮。In the figure, 1 represents the gear, 2 represents the rack, 22 represents the positioning surface, 23 represents the end tooth, 24 represents the starting end of the positioning surface, 25 represents the driving tooth, 3 represents the floating return device, 31 represents the return control head, 32 represents the installation The bottom surface of the groove, 33 represents the far end of the gear teeth, 34 represents the elastic expansion part, 35 represents the cantilever, 40 represents the first driving device, 41 represents the first transmission device; 42 represents the bearing block, 43 represents the first transmission gear, 44 represents The second transmission gear, 45 represents the third transmission gear.
具体实施方式Detailed ways
为使本发明实施例的目的和技术方案更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to make the purpose and technical solutions of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
本技术领域技术人员可以理解，除非另外定义，这里使用的所有术语（包括技术术语和科学术语）具有与本发明所属领域中的普通技术人员的一般理解相同的意义。还应该理解的是，诸如通用字典中定义的那些术语应该被理解为具有与现有技术的上下文中的意义一致的意义，并且除非像这里一样定义，不会用理想化或过于正式的含义来解释。Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein explain.
本发明中所述的“和/或”的含义指的是各自单独存在或两者同时存在的情况均包括在内。The meaning of "and/or" in the present invention means that each exists alone or both are included.
本发明中所述的“内、外”的含义指的是相对于齿条本身而言，指向齿条内部的方向为内，反之为外；而非对本发明的装置机构的特定限定。The meanings of "inside and outside" in the present invention refer to that relative to the rack itself, the direction pointing to the inside of the rack is inward, and vice versa is outward; it is not a specific limitation to the device mechanism of the present invention.
本发明中所述的“连接”的含义可以是部件之间的直接连接也可以是部件间通过其它部件的间接连接。The meaning of "connection" in the present invention may be a direct connection between components or an indirect connection between components through other components.
本发明中所述的“上、下”的含义指的是，由齿条的背侧指向啮合齿所在平面的方向即为上，反之即为下，而非对本发明的装置机构的特定限定。The meaning of "up and down" in the present invention means that the direction from the back side of the rack to the plane where the meshing teeth are located is up, and vice versa is down, and it is not a specific limitation to the device mechanism of the present invention.
本发明中所述的“第一方向”的含义指的是齿轮能够由浮动回程装置定位空转的旋转方向。The meaning of "first direction" in the present invention refers to the rotation direction in which the gear can be positioned and idling by the floating return device.
图1为根据本发明的一种齿轮齿条机构，其安装于图6或图7所示的推门装置中，由推门装置的第一驱动装置40驱动而伸出所述推门装置顶推门体，或收缩至所述推门装置内。Figure 1 is a rack and pinion mechanism according to the present invention, which is installed in the door pushing device shown in Figure 6 or Figure 7, driven by the first driving device 40 of the door pushing device to extend out of the top of the door pushing device Push the door body, or shrink into the door pushing device.
所述的推门装置安装在冰箱门上或其他装置、家具、电器或任意设备的门上，参照图6或图7所示，其包括：The door pushing device is installed on the refrigerator door or on the door of other devices, furniture, electrical appliances or any equipment, as shown in Figure 6 or Figure 7, which includes:
第一驱动装置40，通常选用电机实现，为实现对齿轮齿条的往复驱动，电机需要配合相应的控制手段和驱动电路实现正转和反转两个状态的切换；The first driving device 40 is usually implemented by using a motor. In order to realize the reciprocating drive of the rack and pinion, the motor needs to cooperate with corresponding control means and drive circuits to realize the switching between the two states of forward rotation and reverse rotation;
第一传动组件，其包括：直接连接电机驱动轴的第一传动装置41，第一传动装置41的远端可通过轴承块42固定而由电机驱动旋转。所述的第一传动装置41可选择为蜗轮蜗杆，输出驱动力至后面的第一传动齿轮43、第二传动齿轮44、第三传动齿轮45等传动齿轮，实现对转速和驱动方向的调节。最后，所述传动齿轮啮合齿轮齿条机构的齿轮1，驱动齿轮1正转或反转而相应的驱动齿条2伸出所述推门装置顶推门体，或收缩至所述推门装置内。The first transmission assembly includes: a first transmission device 41 directly connected to the motor drive shaft, the distal end of the first transmission device 41 can be fixed by a bearing block 42 and driven to rotate by the motor. The first transmission device 41 can be selected as a worm gear, which outputs driving force to the following transmission gears such as the first transmission gear 43, the second transmission gear 44, the third transmission gear 45, etc., so as to realize the adjustment of the rotation speed and the driving direction. Finally, the transmission gear meshes with the gear 1 of the rack and pinion mechanism, the driving gear 1 rotates forward or reverse, and the corresponding driving rack 2 extends out of the door pushing device to push the door body, or shrinks to the door pushing device Inside.
所述的齿轮齿条机构，参考图1所示，其包括浮动回程装置3，所述浮动回程装置3设置在齿条2的啮合齿的端部，齿轮1位于所述浮动回程装置3的上方时，齿轮与啮合齿之间脱离啮合或重新啮合。The rack and pinion mechanism, as shown in FIG. 1 , includes a floating return device 3, which is arranged at the end of the meshing teeth of the rack 2, and the gear 1 is located above the floating return device 3. When , the gear and the meshing teeth are disengaged or re-engaged.
具体而言，上述的齿轮齿条机构，受电机正转或反转的驱动而存储在两个状态。第一状态下，所述齿轮1在所述浮动回程装置3的上方旋转，所述齿轮1与所述齿条2之间脱离啮合，所述齿条2定位；Specifically, the above-mentioned rack and pinion mechanism is driven by the forward rotation or the reverse rotation of the motor and stored in two states. In the first state, the gear 1 rotates above the floating return device 3, the gear 1 and the rack 2 are disengaged, and the rack 2 is positioned;
第二状态下，所述浮动回程装置3的上端至少部分地抵接所述齿轮1，推动所述齿轮1与所述齿条2的啮合齿重新啮合，驱动所述齿条2。In the second state, the upper end of the floating return device 3 at least partly abuts against the gear 1 to push the gear 1 to re-engage with the meshing teeth of the rack 2 to drive the rack 2 .
该浮动回程装置3设置在所述齿条的回程点位置，若需要保证齿条往复运动均能够分别在两端回程过程中进行限位，保护齿条不松脱，本发明可在齿条往复的回程端点分别设置两个相对的浮动回程装置3。对应的所述的齿条上还在该回程位置设置有定位面22。所述定位面22沿所述齿条的长度方向或传动方向开设在所述齿条2的啮合齿的端部，所述浮动回程装置3设置在所述定位面22内，所述齿轮1在所述定位面22内定位所述齿条2或重新驱动所述齿条2。在图1所示的实现方式下，所述的定位面22可设置为下凹的定位槽。该定位槽的起始端24自其前方的末齿23（附图1中末齿的虚线部分用于示意因开设定位槽而去除的一部分末齿）开设，末齿上的任意位置均可作为该起始端24，末齿为齿条上的任意一个啮合齿。沿齿条宽度方向，在定位槽处设置有上述的浮动回程装置3。The floating return device 3 is arranged at the return point of the rack. If it is necessary to ensure that the reciprocating motion of the rack can be limited during the return process at both ends, the rack can be protected from loosening. Two opposite floating backhaul devices 3 are respectively arranged at the backhaul endpoints of the two. The corresponding rack is also provided with a positioning surface 22 at the return position. The positioning surface 22 is set at the end of the meshing teeth of the rack 2 along the length direction or the transmission direction of the rack, the floating return device 3 is arranged in the positioning surface 22, and the gear 1 Position the rack 2 in the positioning surface 22 or drive the rack 2 again. In the implementation shown in FIG. 1 , the positioning surface 22 may be configured as a concave positioning groove. The starting end 24 of this locating groove is opened from the end tooth 23 in its front (the dotted line part of the end tooth in the accompanying drawing 1 is used to indicate a part of the end tooth removed because of setting up the locating groove), and any position on the end tooth can be used as the end tooth. The initial end 24 and the final tooth are any meshing teeth on the rack. Along the width direction of the rack, the above-mentioned floating return device 3 is arranged at the positioning groove.
由此，所述齿轮1沿所述齿条以第一方向旋转至所述浮动回程装置3上方时，该浮动回程装置3处于第一状态；所述齿轮1在该浮动回程装置3上方相对该浮动回程装置以第二方向旋转时，该浮动回程装置3处于第二状态；所述第一方向与所述第二方向相反，可根据浮动回程装置3的具体结构而分别对应于电机正转或反转。Thus, when the gear 1 rotates above the floating return device 3 in the first direction along the rack, the floating return device 3 is in the first state; the gear 1 is above the floating return device 3 relative to the When the floating return device rotates in the second direction, the floating return device 3 is in the second state; the first direction is opposite to the second direction, and can correspond to the forward rotation or the forward rotation of the motor according to the specific structure of the floating return device 3 . reverse.
其中，在一种较为典型的实现方式下，所述浮动回程装置3包括回程控制头31。所述第一状态下，所述齿轮1由电机驱动沿第一方向旋转时，齿轮1的轮齿反复按压所述回程控制头31的上端面，反复驱动所述回程控制头31向下移动；而在第二状态下，所述齿轮1由电机反向驱动以第二方向旋转时，从所述齿条的传动方向抵接所述回程控制头31的上端侧部，所述齿轮1由所述回程控制头31推动而啮合所述回程控制头31旁边的啮合齿，驱动所述齿条2。Wherein, in a more typical implementation manner, the floating return device 3 includes a return control head 31 . In the first state, when the gear 1 is driven by the motor to rotate in the first direction, the teeth of the gear 1 repeatedly press the upper end surface of the return control head 31 to repeatedly drive the return control head 31 to move downward; In the second state, when the gear 1 is reversely driven by the motor to rotate in the second direction, the gear 1 abuts against the upper end side of the return control head 31 from the transmission direction of the rack, and the gear 1 is driven by the gear. The return control head 31 is pushed to engage with the teeth next to the return control head 31 to drive the rack 2 .
参考图2，上述回程控制头31的上端面向上倾斜，为配合齿轮实现第一状态和第二状态之间的切换，所述回程控制头31的上端面的高度顺所述齿轮1旋转的第一方向由低过渡至高。所述第一状态下，所述齿轮1沿第一方向旋转时，齿轮1轮齿的远端与所述回程控制头31的上端面相切滑动，驱动所述回程控制头31向下；而所述第二状态下，所述回程控制头31的较高一侧的端部又能够推动齿轮1啮合所述回程控制头31旁边的啮合齿恢复对齿条的驱动。With reference to Fig. 2, the upper end face of the above-mentioned return control head 31 is inclined upwards, in order to cooperate with the gear to realize switching between the first state and the second state, the height of the upper end face of the return control head 31 follows the first rotation of the gear 1 One direction transitions from low to high. In the first state, when the gear 1 rotates in the first direction, the distal end of the teeth of the gear 1 slides tangentially with the upper surface of the return control head 31, driving the return control head 31 downward; In the second state, the higher end of the return control head 31 can push the gear 1 to mesh with the meshing teeth next to the return control head 31 to restore the drive to the rack.
以图2为例，所述的回程控制头31可设置为独立的部件，其下端连接弹性件而形成上下浮动的结构。回程控制头31相对齿条竖向安装。所述的弹性件为弹性伸缩件34，所述的弹性伸缩件可通过弹簧或微小的液压装置或弹片等结构实现。所述齿条2内还设置有安装槽，所述弹性伸缩件34安装在所述安装槽内，所述弹性伸缩件34的下端与所述安装槽的底面固定，所述弹性伸缩件34的上端固定于所述回程控制头31的下端，所述回程控制头31在所述弹性伸缩件34的弹性作用下沿所述安装槽上下浮动。Taking FIG. 2 as an example, the return control head 31 can be set as an independent component, and its lower end is connected with an elastic member to form a structure that floats up and down. The return control head 31 is installed vertically relative to the rack. The elastic element is an elastic expansion element 34, and the elastic expansion element can be realized by a spring or a small hydraulic device or a shrapnel. An installation groove is also provided in the rack 2, and the elastic expansion member 34 is installed in the installation groove, the lower end of the elastic expansion member 34 is fixed to the bottom surface of the installation groove, and the elastic expansion member 34 The upper end is fixed to the lower end of the return control head 31 , and the return control head 31 floats up and down along the installation groove under the elastic action of the elastic expansion member 34 .
其中，所述的回程控制头31的顶部形状可设置为接近三角形，其背离末齿朝向齿条近端的侧面为斜面，且该斜面朝向末齿倾斜，倾斜角度α不大于30°在所述回程控制头31的顶端形成h的高度差；其朝向末齿的侧面基本为竖直面。回程控制头的位置，沿齿条长度方向，回程控制头处于第一状态时，其上端面剋有部分应进入齿轮的齿间隙之间，优选的，其进入齿轮齿顶圆的高度不小于0.03M（M为齿轮的模数）。所述齿轮1沿第一方向旋转的过程中，齿轮1轮齿的远端33与所述回程控制头31的上端面相切，各轮齿顺次的由回程控制头31上端面较低位置逐渐滑动至回程控制头31上端面较高位置，各轮齿反复驱动所述回程控制头31向下。由此，齿轮脱离啮合在所述回程控制头31上空转，相对齿条无明显位移，即实现对齿条的定位，将齿条相对齿轮限制在对应该回程控制头31的位置。Wherein, the top shape of the return control head 31 can be set to be close to a triangle, and its side facing away from the end tooth towards the proximal end of the rack is an inclined plane, and the inclined plane is inclined towards the end tooth, and the inclination angle α is not greater than 30°. The top end of the return control head 31 forms a height difference of h; its side facing the end tooth is basically a vertical plane. The position of the return control head is along the length direction of the rack. When the return control head is in the first state, part of its upper end surface should enter between the tooth gaps of the gears. Preferably, the height of the return control head entering the tooth tip circle of the gear is not less than 0.03 M (M is the modulus of the gear). During the rotation of the gear 1 in the first direction, the distal end 33 of the teeth of the gear 1 is tangent to the upper end surface of the return control head 31, and each tooth is sequentially moved from the lower position of the upper end surface of the return control head 31 to Sliding to a higher position on the upper end surface of the return control head 31, each gear tooth repeatedly drives the return control head 31 downward. Thus, the gear disengages and idles on the return control head 31 without obvious displacement relative to the rack, that is, the positioning of the rack is realized, and the rack is limited to the position corresponding to the return control head 31 relative to the gear.
图3中，沿齿条2宽度方向，回程控制头31可穿设在齿条宽度区域中。当然，回程控制头31也可设置在齿条侧边。或者，如果齿轮、齿条的宽度一致，则还可以在沿齿条长度方向设置回程控制头的位置区域，将齿条的宽度设置为相比齿轮宽度较窄，使回程控制头始终处于齿轮的宽度范围中，以充分于齿轮接触发生作用实现两状态之间的切换。In FIG. 3 , along the width direction of the rack 2 , the return control head 31 can be installed in the width region of the rack. Of course, the return control head 31 can also be arranged on the side of the rack. Or, if the width of the gear and the rack are the same, you can also set the position area of the return control head along the length direction of the rack, and set the width of the rack to be narrower than the width of the gear, so that the return control head is always at the center of the gear. In the width range, the switching between the two states can be realized by sufficiently acting on the gear contact.
图3中，所述齿条2的两端分别设置有2个所述浮动回程装置3，2个所述浮动回程装置3结构对称，能够分别为所述齿条2提供两个方向的定位，限制所述齿轮相对所述齿条在2个所述浮动回程装置3之间运动。In FIG. 3 , two ends of the rack 2 are respectively provided with two floating return devices 3 , and the two floating return devices 3 are symmetrical in structure and can provide positioning in two directions for the rack 2 respectively. The gear is restricted from moving between the two floating return devices 3 relative to the rack.
以图4或图5为例，述弹性件与所述回程控制头31之间还可以设置为一体成型。所述弹性件的一端可连接所述齿条2的内壁、侧壁或顶部，所述弹性件的另一端连接所述回程控制头31。Taking FIG. 4 or FIG. 5 as an example, the elastic member and the return control head 31 may also be integrally formed. One end of the elastic member can be connected to the inner wall, side wall or top of the rack 2 , and the other end of the elastic member is connected to the return control head 31 .
具体而言，在图4的实现方式下，所述齿条2上部挖空形成所述回程控制头31，所述弹性件为一悬臂35，所述悬臂35的一端与所述齿条2的顶部连成一体，所述悬臂35另一端与所述回程控制头31连成一体，所述回程控制头31在所述悬臂35的弹性作用下相对所述齿条的啮合齿所在平面上下浮动。Specifically, in the implementation of FIG. 4 , the upper part of the rack 2 is hollowed out to form the return control head 31 , the elastic member is a cantilever 35 , and one end of the cantilever 35 is connected to the end of the rack 2 . The top is connected as a whole, and the other end of the cantilever 35 is connected with the return control head 31 , and the return control head 31 floats up and down relative to the plane where the meshing teeth of the rack are located under the elastic action of the cantilever 35 .
而在图5所示的另一实现方式下，所述弹性件同样可设置为一悬臂35。该悬臂35的一端与所述齿条2的侧壁固定，所述悬臂35的另一端与所述回程控制头31的侧端连接。该实现方式下的回程控制头、悬臂不是在齿条上挖空而形成的，是外设部件，悬臂35可采用弹簧钢丝。所述回程控制头31在所述悬臂35的弹性作用下相对所述齿条的啮合齿所在平面上下浮动。In another implementation manner shown in FIG. 5 , the elastic member can also be set as a cantilever 35 . One end of the cantilever 35 is fixed to the side wall of the rack 2 , and the other end of the cantilever 35 is connected to the side end of the return control head 31 . The return control head and the cantilever in this implementation mode are not formed by hollowing out the rack, but are peripheral components, and the cantilever 35 can be a spring steel wire. Under the elastic action of the cantilever 35 , the return control head 31 floats up and down relative to the plane where the meshing teeth of the rack are located.
齿轮顺时针转动，齿条向左平移，当齿轮与齿条传动到回程点，齿轮与末齿脱离啮合后，就进入了右侧的定位槽。此时，齿条不能继续向左平移而是在回程点及时停止。此时，即使电机继续工作带动齿轮继续顺时针转动，但是由于齿轮始终保持在定位槽中空转，与齿条之间没有啮合传动，因而，齿条在回程点也始终是停留在原有位置。由此本方案实现准确定位。由于回程控制头是可向下浮动的，因此其不会阻碍齿轮进入定位槽，齿轮进入定位槽中后，回程控制头处于下压状态或临界处于自由状态。如附图2所示，需要回程时，齿轮受到电机带动，从右侧的定位槽逆时针转动，当齿轮的某个齿与回程控制头的上端面抵合时，则齿轮对齿条产生向右的推力，促使齿条向右产生较小的位移，由于回程控制头31的上端面进入齿轮的齿间隙之间具有一定的高度，因此能满足这样的推力，同时回程控制头31的上端面、以及接近于竖直的侧面还对齿轮产生向左的支撑力促使齿轮与齿条上的啮合齿进一步形成啮合继而连续传动，齿条继续向右平移，从而形成往复传动。该侧面接近竖直面，可形成良好的推力和支撑力，而回程控制头31的另一面朝齿条的近端倾斜向下，能够降低齿轮空转所受阻力。The gear rotates clockwise, and the rack translates to the left. When the gear and the rack are driven to the return point, the gear and the final tooth are disengaged and enter the positioning groove on the right. At this time, the rack cannot continue to translate to the left but stops in time at the return point. Now, even if the motor continues to work to drive the gear to continue to rotate clockwise, but because the gear remains idling in the positioning groove all the time, there is no meshing transmission with the rack, so the rack stays at the original position at the return point. Thus, the program realizes accurate positioning. Since the return control head can float downward, it will not hinder the gear from entering the positioning groove. After the gear enters the positioning groove, the return control head is in a depressed state or is in a critical free state. As shown in Figure 2, when the return stroke is required, the gear is driven by the motor and rotates counterclockwise from the positioning slot on the right. The right thrust causes the rack to produce a small displacement to the right. Since the upper end surface of the return control head 31 enters the tooth gap of the gear with a certain height, it can satisfy such a thrust. At the same time, the upper end surface of the return control head 31 , and the side close to the vertical also produces a leftward support force on the gear to promote further engagement between the gear and the meshing teeth on the rack and then continuous transmission, and the rack continues to translate to the right, thereby forming a reciprocating transmission. This side is close to the vertical surface, which can form a good thrust and support force, while the other side of the return control head 31 is inclined downward toward the proximal end of the rack, which can reduce the resistance suffered by the idle rotation of the gear.
以上仅为本发明的实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些均属于本发明的保护范围。The above is only the embodiment of the present invention, and its description is relatively specific and detailed, but it should not be construed as limiting the patent scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910683336 | 2019-07-26 | ||
| CN2019106833365 | 2019-07-26 |
| Publication Number | Publication Date |
|---|---|
| CN110397708Atrue CN110397708A (en) | 2019-11-01 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910848497.5APendingCN110397708A (en) | 2019-07-26 | 2019-09-09 | Rack and pinion mechanism, door pushing device, refrigerator and door |
| Country | Link |
|---|---|
| CN (1) | CN110397708A (en) |
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| CN115179976A (en)* | 2021-12-22 | 2022-10-14 | 浙江衣拿智能科技股份有限公司 | A suspension and drive integrated structure for a suspension car |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB436082A (en)* | 1934-03-28 | 1935-09-30 | William Mackey Stavers | Improvements in rack and pinion mechanism |
| JPH02150536A (en)* | 1988-11-30 | 1990-06-08 | Shimadzu Corp | Rack and pinion device |
| JP2000304424A (en)* | 1999-04-16 | 2000-11-02 | Toshiba Home Technology Corp | Door driving device |
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| CN108868441A (en)* | 2018-08-01 | 2018-11-23 | 仝达科技（惠州）有限公司 | A kind of transfer bar mechanism with automatic retraction function |
| CN210889954U (en)* | 2019-07-26 | 2020-06-30 | 江苏凯德电控科技有限公司 | Rack and pinion mechanism, door pushing device, refrigerator and door |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB436082A (en)* | 1934-03-28 | 1935-09-30 | William Mackey Stavers | Improvements in rack and pinion mechanism |
| JPH02150536A (en)* | 1988-11-30 | 1990-06-08 | Shimadzu Corp | Rack and pinion device |
| US6247580B1 (en)* | 1998-03-05 | 2001-06-19 | A/S Techno Track | Actuator for a bi-directional conveyor belt |
| JP2000304424A (en)* | 1999-04-16 | 2000-11-02 | Toshiba Home Technology Corp | Door driving device |
| CN108868441A (en)* | 2018-08-01 | 2018-11-23 | 仝达科技（惠州）有限公司 | A kind of transfer bar mechanism with automatic retraction function |
| CN210889954U (en)* | 2019-07-26 | 2020-06-30 | 江苏凯德电控科技有限公司 | Rack and pinion mechanism, door pushing device, refrigerator and door |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115179976A (en)* | 2021-12-22 | 2022-10-14 | 浙江衣拿智能科技股份有限公司 | A suspension and drive integrated structure for a suspension car |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication | Application publication date:20191101 |