CN103770056A - Ratchet wrench - Google Patents

Abstract

Translated fromChinese

本发明涉及一种棘轮扳手，包括具有延伸手柄的扳手本体及通过棘轮棘爪机构转动装配在扳手本体头部中的扳头，所述的扳头的中心设置有与螺母外形配合的通孔，所述扳手本体的头部设有自外周面延伸至内周面的外侧向开口通道，所述扳头上设有自外周面延伸至其内六边形通孔中的、与所述外侧向开口通道对应的内侧向开口通道。所述的棘轮扳手的头部设置了侧向开口，具有开口式扳手可以从侧面插入的好处，还具有棘轮扳手可以连续工作，需要的装配空间较小的优点。

The invention relates to a ratchet wrench, which comprises a wrench body with an extended handle and a wrench head which is rotatably assembled in the head of the wrench body through a ratchet pawl mechanism. The center of the wrench head is provided with a through hole matching the shape of the nut. The head of the wrench body is provided with an outer lateral opening channel extending from the outer peripheral surface to the inner peripheral surface, and the wrench head is provided with a channel extending from the outer peripheral surface to its inner hexagonal through hole, which is connected to the outer lateral opening channel. The open channel corresponds to the inner lateral open channel. The head of the ratchet wrench is provided with a lateral opening, which has the advantage that the open-ended wrench can be inserted from the side, and also has the advantage that the ratchet wrench can work continuously and requires less assembly space.

Description

A kind of ratchet spanner

Technical field

The present invention relates to a kind of power tool of mechanical field, relate in particular to a kind of ratchet spanner.

Background technology

In hydraulic system, hydraulic test uses fluid pressure line to connect, and along with the miniaturization of product, the design of hydraulic system needs fully rationally to utilize space, hydraulic system to start to adopt module integration to shorten pipeline.The compactness day by day of hydraulic system structure, the day by day shortening of pipeline, causes reducing of assembly space, causes assembly difficulty to increase.In hydraulic system, when being connected between pipe fitting and pipe fitting or pipe fitting being connected on the pipe fitting connector on equipment, need to tighten hexagonal coupling nut, tightening nuts is used the existing adjustable wrench instrument in market, when assembling, spanner need to rotate 60 °, along with the increase of nut specification, the space that spanner rotates 60 ° of needs increases gradually, and the Space Product that does not have spanner to rotate 60 ° just cannot assemble.The existing ratchet wrench tool in market, spanner rotates and is subject to spatial limitation very little, but ratchet spanner imperforation, pipe fitting is connected to rear spanner on the pipe fitting connector on equipment cannot be taken off, and can not use.

Summary of the invention

The object of this invention is to provide a kind of ratchet spanner, need larger rotation space, the astomous problem of ratchet spanner to solve shfting wrench in prior art.

For achieving the above object, the present invention adopts following technical scheme: a kind of ratchet spanner, comprise having and extend the wrench body of handle and rotate the spanner being assemblied in wrench body head by ratchet and pawl arrangement, the center of described spanner is provided with the through hole coordinating with nut profile, the head of described wrench body is provided with the lateral open channel that extends to inner peripheral surface from outer peripheral face, and described spanner is provided with interior side direction open channel in hexagon through hole, corresponding with described lateral open channel in outer peripheral face extends to it.

Described ratchet and pawl arrangement comprises the pawl structures that is assemblied on wrench body head and is arranged on the ratchet of described spanner periphery, described pawl structures comprise on the ratchet of radial elastic inserting in wrench body and ratchet, connect be provided for regulating ratchet towards reversing arrangement.

Described pawl structures is large outer little in Radius, one end head that radius is larger is provided with the ladder backing pin of the ratchet matching with the ratchet shape being arranged on the outer peripheral face of spanner, described ladder backing pin by the inserting of spring radial elastic in the overcoat being fixedly mounted in wrench body, described overcoat inside is provided with large outer little ladder hole in aperture, described spring housing is contained on ladder backing pin, be inserted in overcoat together with ladder backing pin, be stuck between the ladder of ladder backing pin and the ladder of the ladder endoporus of overcoat, for regulate ratchet towards reversing arrangement one draw pin, drawing pin is ladder pin, external diameter is inner small and outside big, the part that external diameter is less is provided with endoporus, the part that ladder backing pin radius is less is inserted in hole, both are in the outside of overcoat, hinged with backing pin alignment pin, the drop-down pin of effect at spring force coordinates with overcoat.

Described drawing between pin and overcoat is provided with spline structure.

Described spline structure by be provided with two parallel and axis plane draw pin inner and be provided with the overcoat outer end that is divided into the two-part rectangular indentation with drawing pin bottom to divide to match by overcoat endoporus and form, under the effect of spring force, draw pin the inner to be drawn in Yu Laxiao bottom, overcoat outer end and divide in the rectangular indentation matching.

Described pawl structures has two, is arranged at respectively the upper and lower both sides of wrench body upper ejector lever center line near the position of extending handle.

Fixed structure in the described inner cylinder face that spanner axial limiting is fixed on to wrench body head is the upper and lower cover plates composition that is fixed on wrench body head by cover plate alignment pin, and described upper and lower cover plates is to be provided with and the sheet shape circulus of the corresponding rectangular aperture of side direction rectangular aperture of the head of ratchet spanner.

Described ratchet ratchet is arranged on the outer peripheral face of spanner, and described ratchet is rectangular teeth.

The invention has the beneficial effects as follows: the head at ratchet spanner is provided with lateral openings, have the benefit that open-end wrench can insert from the side, also having ratchet spanner can continuous operation, the less advantage of assembly space needing.

On spanner, be provided with two ratchets, movable ratchet radial expansion as required, manually adjusts ratchet, freely selects driving direction, or the spanner use that fixes, to meet people to the multifarious requirement of instrument.

Spanner is fixed on by upper and lower cover plates axial limiting in the inner cylinder face of wrench body head, and cover plate is fixed on wrench body head by cover plate alignment pin, is easy to dismounting, therefore, can change spanner according to acted on nut size.

Accompanying drawing explanation

Fig. 1 is front view of the present invention;

Fig. 2 is the cutaway view of Fig. 1;

Fig. 3 is the A-A cutaway view of Fig. 2.

The specific embodiment

In Fig. 1,2,3, a kind of ratchet spanner comprises spanner 2, has the wrench body 7 and the ratchet and pawl arrangement that extend handle, and the head of ratchet spanner is provided with side direction rectangular aperture.The external cylindrical surface that spanner 2 is provided with rectangle ratchet coordinates with the inner cylinder face that band extends wrench body 7 heads of handle, and be fixed in the inner cylinder face of wrench body 7 heads by cover plate 1 axial limiting, spanner 2 can freely rotate in the inner cylinder face at wrench body 7 heads.Cover plate 1 is sheet shape circulus, is fixed in wrench body 7 by cover plate alignment pin 9.The center of spanner 2 is provided with regular hexagon endoporus, for coordinating with hex nut, the interior radius of circle of sheet shape circulus cover plate 1 annulus is greater than the circumradius of spanner 2 regular hexagon endoporus, when spanner work, cover plate 1 can not interfere spanner 2 to rotate in the inner cylinder face of wrench body 7 heads, the head of spanner 2 and wrench body 7 is provided with the groove of the installation cover plate 1 matching with cover plate 1 shape, and each parts assemble rear spanner surface and are a plane, specious.

Click machine structure has two ratchets, is arranged at respectively the wrench body 7 upper and lower both sides of upper ejector lever center line near extending the position of handle, and pawl structures is by overcoat 8, ladder backing pin 3, spring 6 and draw pin 4 and backing pin steady pin 5 forms.The inside of overcoat 8 is provided with large outer little ladder hole in aperture, and be threaded connection in the vertical screwed hole passing through mutually of inner cylinder face being arranged in wrench body 7 with wrench body 7 heads, large outer little in the radius of ladder backing pin 3, be inserted in overcoat 8, spring 6 is sleeved on ladder backing pin 3, be inserted into together with ladder backing pin 3 in overcoat 8, be stuck between the ladder of ladder backing pin 3 and the ladder of the ladder endoporus of overcoat 8, less one end of radius of backing pin 3 is provided with backing pin dowel hole, the larger one end of radius head has processed the ratchet matching with the rectangle ratchet shape being arranged on the external cylindrical surface of cylindrical spanner 2, in the outside of overcoat 8, backing pin 3 is by backing pin alignment pin 5 and draw pin 4 hinged, the drop-down pin 4 of effect at spring force coordinates with overcoat 8.Draw pin 4 for ladder pin, external diameter is up big and down small, the plane that is provided with two parallel and bearing pins is divided in bottom, two interplanar distances are less than bottom and divide external diameter, overcoat 8 outer ends are provided with by overcoat endoporus and are divided into two-part rectangular indentation, under the effect of spring force, draw 8 times parts of pin to be drawn in overcoat 8 Yu Laxiao bottoms, outer end and divide the rectangular indentation matching, form spline structure.

It is saw-toothed that ratchet in the present embodiment on the external cylindrical surface of cylindrical spanner 2 is that rectangle ratchet also can do; In the present embodiment between overcoat 8 and wrench body 7 for being threaded, also can adopt other to be fixedly connected with mode.Draw spline structure between pin 4 and overcoat 8 can make the spline structure of multiaspect prism and multiaspect endoporus composition, the simple replacement that these all belong to similar mode, does not repeat them here yet.

While using fitting operation of the present invention, can be according to actual needs by change ratchet towards freely selecting driving direction or fixing spanner use, manual action is in drawing pin 4, draw pin 4 to drive backing pin 3 to move upward, leave overcoat 8 outer ends and draw pin 4 bottoms to divide after the rectangular indentation matching when drawing pin 4 the inners, pin 4 is drawn in rotation, draws pin 4 to drive backing pin 3 to rotate, can change backing pin 3 ratchet inclined-plane towards.When the ratchet inclined-plane of two backing pins 3 is when consistent, spanner acts on nut, and one tightens to rotation, and another is to neutral return; When the inclined-plane of two backing pins 3 is when inconsistent, spanner acts on nut, and one to nut is tightened, and another is to making nut loosening, and now, ratchet spanner uses as back-up wrench.

In the present embodiment, ratchet spanner is provided with two ratchets, also can only design a ratchet, and design is when a ratchet, and the spanner spanner that can not fix uses.

Use the present invention to carry out fluid pressure line and be connected and installed while operation, ratchet spanner inserts pipeline by lateral openings, is then sleeved on the hex nut connecting on pipeline, freely selects according to actual needs driving direction to carry out operation.Due to the diameter of pipeline, not connect spacing between hex nut two opposite side surfaces large, so as long as the lateral openings spacing of spanner is greater than caliber, even if be less than the spacing between hex nut two opposite side surfaces, spanner still can use.Spanner is in the time of operation, between lateral openings in lateral openings and wrench body on spanner, can produce the angular misalignment of accumulation, complete after installation, two lateral openings may be in co-located, at this moment spanner can be backed off from hex nut, be enclosed within on the pipeline that diameter is less, manually take off spanner.

Claims (8)

Translated fromChinese

1.一种棘轮扳手，包括具有延伸手柄的扳手本体及通过棘轮棘爪机构转动装配在扳手本体头部中的扳头，所述的扳头的中心设置有与螺母外形配合的通孔，其特征在于：所述扳手本体的头部设有自外周面延伸至内周面的外侧向开口通道，所述扳头上设有自外周面延伸至其内六边形通孔中的、与所述外侧向开口通道对应的内侧向开口通道。1. A ratchet wrench, comprising a wrench body with an extended handle and a wrench mounted in the head of the wrench body through a ratchet pawl mechanism, the center of the wrench is provided with a through hole that matches the shape of the nut. It is characterized in that: the head of the wrench body is provided with an outer lateral opening channel extending from the outer peripheral surface to the inner peripheral surface; The inner side opening channel corresponding to the outer side opening channel.2.根据权利要求1所述的棘轮扳手，其特征在于：所述棘轮棘爪机构包括装配在扳手本体头部上的棘爪结构和设置在所述扳头外周的棘轮，所述的棘爪结构包括径向弹性插配在扳手本体上的棘爪以及棘爪上连接设置用于调节棘爪朝向的换向装置。2. The ratchet wrench according to claim 1, characterized in that: the ratchet pawl mechanism includes a pawl structure assembled on the head of the wrench body and a ratchet wheel arranged on the outer periphery of the wrench head, and the pawl The structure includes a pawl radially elastically fitted on the wrench body and a reversing device connected to the pawl for adjusting the direction of the pawl.3.根据权利要求2所述的棘轮扳手，其特征在于：所述棘爪结构为一半径内大外小，半径较大的一端头部设置有与设置在扳头的外周面上的棘齿形状相配的棘爪的阶梯挡销，所述的阶梯挡销通过弹簧径向弹性插配在固定安装在扳手本体上的外套中，所述的外套内部设置有孔径内大外小的阶梯通孔，所述的弹簧套装在阶梯挡销上，与阶梯挡销一起插装在外套内，卡在阶梯挡销的阶梯与外套的阶梯内孔的阶梯之间，用于调节棘爪朝向的换向装置一拉销，拉销为阶梯销，外径内小外大，外径较小的部分设有内孔，阶梯挡销半径较小的部分插装在孔内，两者在外套的外部，用挡销定位销铰接，在弹簧力的作用下拉销与外套配合。3. The ratchet wrench according to claim 2, characterized in that: the structure of the pawl has a large radius inside and a small outside, and one end with a larger radius is provided with a ratchet set on the outer peripheral surface of the wrench The step stop pin of the ratchet with matching shape, the step stop pin is radially and elastically inserted into the outer cover fixedly installed on the wrench body through the spring, and the inside of the outer cover is provided with a stepped through hole with a large diameter inside and a small outside. , the spring is set on the stepped stop pin, inserted into the outer casing together with the stepped stop pin, and stuck between the step of the stepped stop pin and the step of the inner hole of the step of the outer casing, and is used to adjust the reversing direction of the pawl The device is a pull pin, the pull pin is a stepped pin, the outer diameter is small inside and the outside is large, the part with a smaller outer diameter is provided with an inner hole, and the part with a smaller radius of the stepped stop pin is inserted into the hole, both of which are outside the jacket. Hinged with the retaining pin positioning pin, under the action of spring force the lower pin cooperates with the overcoat.4.根据权利要求3所述的棘轮扳手，其特征在于：所述的拉销与外套之间设置有止转结构。4. The ratchet wrench according to claim 3, characterized in that: a rotation-preventing structure is provided between the pulling pin and the outer casing.5.根据权利要求4所述的棘轮扳手，其特征在于：所述的止转结构由设置有两个平行与轴线的平面的拉销内端以及设置有被外套内孔隔为两部分的与拉销下部分相吻合的矩形缺口的外套外端组成，在弹簧力的作用下，拉销内端被拉进外套外端与拉销下部分相吻合的矩形缺口内。5. The ratchet wrench according to claim 4, characterized in that: the anti-rotation structure is composed of two inner ends of the pull pins arranged on planes parallel to the axis and an inner end of the pull pin which is divided into two parts by the inner hole of the jacket. The outer end of the outer cover of the rectangular notch matching the lower part of the draw pin is formed. Under the action of the spring force, the inner end of the draw pin is pulled into the rectangular notch where the outer end of the draw pin matches the lower part of the draw pin.6.根据权利要求1～5任意一项所述的棘轮扳手，其特征在于：所述的棘爪结构有两个，分别设置于扳手本体上扳手中心线上下两侧靠近延伸手柄的位置。6 . The ratchet wrench according to any one of claims 1 to 5 , wherein there are two pawl structures, which are respectively arranged on the wrench body on the upper and lower sides of the center line of the wrench close to the extension handle.7.根据权利要求1所述的棘轮扳手，其特征在于：所述的将扳头轴向限位固定在扳手本体头部的内圆柱面内的固定结构为通过盖板定位销固定在扳手本体头部的上下盖板组成，所述的上下盖板为设置有与棘轮扳手的头部的侧向矩形开口相应的矩形开口的片形环状结构。7. The ratchet wrench according to claim 1, characterized in that: the fixing structure for fixing the axial limit of the wrench head in the inner cylindrical surface of the head of the wrench body is fixed on the wrench body through the positioning pin of the cover plate The head is composed of upper and lower cover plates, and the upper and lower cover plates are sheet-shaped ring structures provided with rectangular openings corresponding to the lateral rectangular openings of the head of the ratchet wrench.8.根据权利要求1所述的棘轮扳手，其特征在于：所述的棘轮棘齿设置在扳头的外周面上，所述的棘齿为矩形齿。8. The ratchet wrench according to claim 1, wherein the ratchet teeth are arranged on the outer peripheral surface of the wrench head, and the ratchet teeth are rectangular teeth.

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