CN107030638B - Magnetic screwdriver for electrician - Google Patents

Abstract

Translated fromChinese

本发明提供一种磁性电工螺丝刀，包括握柄；所述握柄下端固定有延伸至至握柄内的刀杆，所述刀杆由铁磁体构成，下端形成螺丝刀头；所述握柄内部设有一条与所述刀杆同轴的、贯穿握柄上端的滑道；所述滑道内设有一根可沿滑道轴线滑动的滑杆，所述滑杆的下端固定有永磁体；滑杆的上端伸出握柄，并在握柄上方形成压帽，所述压帽与握柄之间设有一个压簧；所述压簧在自然状态下，使所述滑杆上升到上极限位置，以至所述永磁体远离所述刀杆；所述滑杆被下压至下极限位置时，滑杆下端的永磁体抵住所述刀杆，以使所述刀杆明显磁化。该磁性电工螺丝刀可以灵活改变刀头磁性，以提高螺钉拾取和旋拧的便利性。

The invention provides a magnetic electrician screwdriver, which includes a handle; the lower end of the handle is fixed with a knife rod extending into the handle, the knife rod is made of ferromagnet, and the lower end forms a screwdriver head; There is a slideway that is coaxial with the knife rod and runs through the upper end of the handle; a slide bar that can slide along the axis of the slideway is arranged in the slideway, and a permanent magnet is fixed on the lower end of the slide bar; The upper end of the handle extends out of the handle, and a pressure cap is formed above the handle, and a compression spring is arranged between the pressure cap and the handle; the compression spring makes the slide bar rise to the upper limit position in a natural state, So that the permanent magnet is far away from the knife rod; when the slide bar is pressed down to the lower limit position, the permanent magnet at the lower end of the slide bar is against the knife rod, so that the knife rod is clearly magnetized. This magnetic electrician screwdriver can flexibly change the magnetism of the bit to improve the convenience of screw picking and screwing.

Description

Translated fromChinese

磁性电工螺丝刀magnetic electrician screwdriver

技术领域technical field

本发明涉及电工工具领域，特别地，涉及一种电工螺丝刀。The invention relates to the field of electrical tools, in particular to an electrical screwdriver.

背景技术Background technique

螺丝刀是电气装置最基本的拆装工具；为了方便拾取体型较小的螺钉，较多的螺丝刀刀头经过磁化，使之对螺钉具有一定的磁吸力，以便于通过一只手即可将螺钉装入螺丝孔。然而，该种螺丝刀在将螺钉装入螺丝孔后，由于磁场的分布问题，螺钉与螺丝刀头的位置是倾斜的，要使螺丝刀头嵌入螺钉的十字凹槽内，需要调整螺丝刀的位置，而螺钉总是跟随螺丝刀在螺孔内运动，导致很难将螺钉、螺丝刀、螺孔调整到与螺丝孔同轴的位置，为此，一般需要使用手指扶住螺钉，才能完成位置校正工作；可见，该种磁性螺丝刀在拧螺钉时，仍然具有明显的不足之处。A screwdriver is the most basic disassembly tool for electrical devices; in order to facilitate picking up smaller screws, more screwdriver bits are magnetized to make them have a certain magnetic attraction to the screws, so that the screws can be installed with one hand. into the screw hole. However, after this kind of screwdriver puts the screw into the screw hole, due to the distribution of the magnetic field, the positions of the screw and the screwdriver head are inclined. To make the screwdriver head embedded in the cross groove of the screw, the position of the screwdriver needs to be adjusted, and the screwdriver Always follow the movement of the screwdriver in the screw hole, which makes it difficult to adjust the screw, screwdriver, and screw hole to the coaxial position with the screw hole. Therefore, it is generally necessary to use fingers to hold the screw to complete the position correction work; it can be seen that the This kind of magnetic screwdriver still has obvious weak point when turning screw.

发明内容Contents of the invention

针对上述问题，本发明的目的在于提供一种磁性电工螺丝刀，该磁性电工螺丝刀可以灵活改变刀头磁性，以提高螺钉拾取和旋拧的便利性。In view of the above problems, the purpose of the present invention is to provide a magnetic electrician screwdriver, which can flexibly change the magnetism of the bit, so as to improve the convenience of screw picking and screwing.

本发明解决其技术问题所采用的技术方案是：该磁性电工螺丝刀包括握柄；所述握柄下端固定有延伸至至握柄内的刀杆，所述刀杆由铁磁体构成，下端形成螺丝刀头；所述握柄内部设有一条与所述刀杆同轴的、贯穿握柄上端的滑道；所述滑道内设有一根可沿滑道轴线滑动的滑杆，所述滑杆的下端固定有永磁体；滑杆的上端伸出握柄，并在握柄上方形成压帽，所述压帽与握柄之间设有一个压簧；所述压簧在自然状态下，使所述滑杆上升到上极限位置，以至所述永磁体远离所述刀杆；所述滑杆被下压至下极限位置时，滑杆下端的永磁体抵住所述刀杆，以使所述刀杆明显磁化。The technical solution adopted by the present invention to solve the technical problem is: the magnetic electrician screwdriver includes a handle; the lower end of the handle is fixed with a knife rod extending into the handle, the knife rod is made of ferromagnet, and the lower end forms a screwdriver head; the inside of the handle is provided with a slideway that is coaxial with the knife bar and runs through the upper end of the handle; the slideway is provided with a slide bar that can slide along the axis of the slideway, and the slide bar The lower end is fixed with a permanent magnet; the upper end of the slide bar extends out of the handle, and a pressure cap is formed above the handle, and a compression spring is arranged between the pressure cap and the handle; the compression spring is in a natural state, so that the The slide bar rises to the upper limit position, so that the permanent magnet is away from the knife rod; when the slide bar is pressed down to the lower limit position, the permanent magnet at the lower end of the slide bar is against the knife bar, so that the knife bar Visibly magnetized.

作为优选，所述刀杆由硅钢柱构成，以使永磁体远离时的剩磁极其微弱。Preferably, the cutter rod is made of a silicon steel column, so that the residual magnetism is extremely weak when the permanent magnet is far away.

作为优选，所述握柄上对应于所述永磁体的滑动区域外侧套置有一个感应线圈；所述刀杆的外周包裹有一个与刀杆之间衬设有绝缘层的金属管套；所述金属管套被经过刀杆轴线的中切面分割成具有绝缘缝隙的两个半管片，该两个半管片分别电性连接所述感应线圈的两个输出极；所述绝缘缝隙上搭接有靠近所述螺丝刀头的贴片LED。由此，在将螺钉移动到螺孔后，快速放开所述压帽的过程中，所述永磁体相对于感应线圈快速运动，使感应线圈的磁通量迅速变化，从而使所述贴片LED产生闪光，以便于看清螺孔内的状况。As a preference, an induction coil is sheathed on the outside of the handle corresponding to the sliding area of the permanent magnet; the outer circumference of the knife rod is wrapped with a metal sleeve with an insulating layer between the knife rod; The metal pipe sleeve is divided into two half-pipes with insulating gaps by the midsection of the cutter bar axis, and the two half-pipes are electrically connected to the two output poles of the induction coil respectively; A SMD LED close to the head of the screwdriver is attached. Therefore, when the screw is moved to the screw hole and the pressing cap is quickly released, the permanent magnet moves quickly relative to the induction coil, causing the magnetic flux of the induction coil to change rapidly, thereby causing the SMD LED to generate Flashes to make it easier to see what's inside the screw hole.

作为优选，所述压帽的上表面制有粗糙纹路；所述滑道内制有内螺纹，而所述滑杆上制有外螺纹，两者相互配合，以使滑杆沿滑道轴向移动时，在螺纹副的约束下使滑杆和握柄关于滑杆轴线相对旋转；由此，在逐渐给所述压簧减压的过程中，由于压帽顶在手指皮肤上，使滑杆难以旋转，而握柄相对于滑杆旋转，并向下移动，从而在卸去刀杆的磁性的同时，使刀杆的螺丝刀头完成一部分向下旋拧螺钉的过程，进一步降低了旋拧螺钉的工作量。Preferably, the upper surface of the pressure cap is made with rough lines; the slideway is made with internal threads, and the slide rod is made with external threads, and the two cooperate with each other to make the slide rod move axially along the slideway , under the constraints of the thread pair, the slide bar and the handle are relatively rotated about the slide bar axis; thus, in the process of gradually decompressing the compression spring, since the pressure cap is pressed against the skin of the finger, the slide bar is difficult to Rotate, while the handle rotates relative to the slide bar and moves downward, so that while the magnetism of the knife bar is removed, the screwdriver head of the knife bar completes a part of the process of screwing down the screw, which further reduces the screwing of the screw. workload.

本发明的有益效果在于：该磁性电工螺丝刀在拾取螺钉时，只需一个手指下压所述滑杆，使滑杆下端的永磁体顶住所述刀杆，即可使刀杆带上磁性，从而吸取螺钉；待至将螺钉放入螺孔后，放开压住滑杆上端的压帽的手指，所述永磁体随滑杆上移，远离刀杆，从而使刀杆消磁；螺钉即可脱离螺丝刀头的约束，保持与螺孔同轴的状态，从而易于将其拧入螺孔。The beneficial effect of the present invention is that: when the magnetic electrician screwdriver picks up the screw, only one finger is needed to press down the slide bar, so that the permanent magnet at the lower end of the slide bar bears against the knife bar, so that the knife bar can be magnetized. So as to absorb the screw; after the screw is put into the screw hole, let go of the finger holding the pressure cap on the upper end of the slide bar, and the permanent magnet moves up with the slide bar, away from the knife bar, so that the knife bar is demagnetized; the screw is enough Unconstrained by the screwdriver head, it remains coaxial with the screw hole, making it easy to screw it into the screw hole.

附图说明Description of drawings

图1是本磁性电工螺丝刀实施例一的示意图。Fig. 1 is a schematic diagram of Embodiment 1 of the present magnetic electrician screwdriver.

图2是本磁性电工螺丝刀实施例二的示意图。Fig. 2 is a schematic diagram of Embodiment 2 of the magnetic electrician screwdriver.

图3是本磁性电工螺丝刀实施例二的示意图。Fig. 3 is a schematic diagram of Embodiment 2 of the magnetic electrician screwdriver.

具体实施方式Detailed ways

下面结合附图和实施例对本发明进一步说明：Below in conjunction with accompanying drawing and embodiment the present invention is further described:

实施例一：Embodiment one:

在图1所示的实施例一中，该磁性电工螺丝刀包括握柄1；所述握柄1下端固定有延伸至至握柄内的刀杆2，所述刀杆2由铁磁体构成，下端形成螺丝刀头21；所述握柄1内部设有一条与所述刀杆同轴的、贯穿握柄1上端的滑道10；所述滑道10内设有一根可沿滑道轴线滑动的滑杆3，所述滑杆3的下端固定有永磁体31；滑杆3的上端伸出握柄1，并在握柄1上方形成压帽32，所述压帽32与握柄1之间设有一个压簧4；所述压簧4在自然状态下，使所述滑杆3上升到上极限位置，以至所述永磁体31远离所述刀杆2；所述滑杆3被下压至下极限位置时，滑杆3下端的永磁体31抵住所述刀杆2，以使所述刀杆2明显磁化。In the first embodiment shown in FIG. 1 , the magnetic electrician screwdriver includes a handle 1; the lower end of the handle 1 is fixed with a knife rod 2 extending into the handle, and the knife rod 2 is made of a ferromagnetic body. A screwdriver head 21 is formed; the inside of the handle 1 is provided with a slideway 10 that is coaxial with the knife bar and runs through the upper end of the handle 1; the slideway 10 is provided with a slideway that can slide along the axis of the slideway Rod 3, the lower end of the slide bar 3 is fixed with a permanent magnet 31; the upper end of the slide bar 3 extends out of the handle 1, and a pressure cap 32 is formed above the handle 1, and a A compression spring 4; the compression spring 4 in a natural state makes the slide bar 3 rise to the upper limit position, so that the permanent magnet 31 is away from the knife bar 2; the slide bar 3 is pressed down to the bottom At the limit position, the permanent magnet 31 at the lower end of the slide bar 3 is against the knife rod 2, so that the knife rod 2 is clearly magnetized.

上述的磁性电工螺丝刀，所述刀杆2由硅钢柱构成，以使永磁体31远离时的剩磁极其微弱。In the above-mentioned magnetic electric screwdriver, the blade 2 is made of a silicon steel column, so that the residual magnetism when the permanent magnet 31 is far away is extremely weak.

上述磁性电工螺丝刀在拾取螺钉时，只需一个手指下压所述滑杆3，使滑杆下端的永磁体31顶住所述刀杆2，即可使刀杆2带上磁性，从而吸取螺钉；待至将螺钉放入螺孔后，放开压住滑杆3上端的压帽32的手指，所述永磁体31随滑杆上移，远离刀杆2，从而使刀杆2消磁；螺钉即可脱离螺丝刀头21的约束，在螺丝刀头21的拨动下调整到与螺孔同轴的状态，并保持住，然后再独立调整螺丝刀头21的方位，使螺丝刀头21、螺钉、螺孔基本保持共轴，从而易于将螺钉拧入螺孔。When the above-mentioned magnetic electrician screwdriver picks up the screw, it only needs one finger to press down the slide bar 3, so that the permanent magnet 31 at the lower end of the slide bar bears against the knife bar 2, so that the knife bar 2 can be magnetically charged, thereby sucking the screw ; After the screw is put into the screw hole, let go of the finger pressing the cap 32 on the upper end of the slide bar 3, and the permanent magnet 31 moves up with the slide bar, away from the knife bar 2, so that the knife bar 2 is demagnetized; Can get rid of the restriction of screwdriver head 21, be adjusted to the coaxial state with screw hole under the stirring of screwdriver head 21, and keep, then independently adjust the orientation of screwdriver head 21, make screwdriver head 21, screw, screw hole It remains substantially coaxial, which makes it easy to screw the screw into the screw hole.

实施例二：Embodiment two:

对于图2所示的实施例二，其与实施例一不同的是，所述握柄1上对应于所述永磁体31的滑动区域外侧套置有一个感应线圈5；所述刀杆2的外周包裹有一个与刀杆之间衬设有绝缘层（未图示）的金属管套；即刀杆2可由硅钢柱构成，而硅钢柱外侧设置一层绝缘层，绝缘层外部再套设所述金属管套；所述金属管套被经过刀杆轴线的中切面分割成具有绝缘缝隙的两个半管片221、222，该两个半管片分别电性连接所述感应线圈5的两个输出极；所述绝缘缝隙上搭接有靠近所述螺丝刀头21的贴片LED6。由此，在将螺钉移动到螺孔后，快速放开所述压帽32的过程中，所述永磁体31相对于感应线圈5快速运动，使感应线圈5的磁通量迅速变化，从而使所述贴片LED6产生闪光，以便于看清螺孔内的状况。For Embodiment 2 shown in FIG. 2 , it differs from Embodiment 1 in that an induction coil 5 is sleeved outside the sliding area corresponding to the permanent magnet 31 on the handle 1 ; The outer circumference is wrapped with a metal sleeve with an insulating layer (not shown) between the cutter bar; that is, the cutter bar 2 can be composed of a silicon steel column, and an insulating layer is arranged on the outside of the silicon steel column, and the outer part of the insulating layer is sheathed. The metal pipe sleeve; the metal pipe sleeve is divided into two half-pipes 221, 222 with insulating gaps through the midsection of the axis of the cutter bar, and the two half-pipes are electrically connected to the two ends of the induction coil 5 respectively. an output pole; the patch LED6 close to the screwdriver head 21 is overlapped on the insulating gap. Thus, after the screw is moved to the screw hole, in the process of quickly releasing the pressing cap 32, the permanent magnet 31 moves quickly relative to the induction coil 5, so that the magnetic flux of the induction coil 5 changes rapidly, so that the SMD LED6 flashes to make it easier to see the situation in the screw hole.

实施例三：Embodiment three:

在图3所示的实施例三中，与实施例一不同的是，所述压帽32的上表面制有粗糙纹路；所述滑道10内制有内螺纹101，而所述滑杆3上制有外螺纹，两者相互配合，以使滑杆3沿滑道10轴向移动时，在螺纹副的约束下使滑杆3和握柄1关于滑杆轴线相对旋转；由此，在逐渐给所述压簧4减压的过程中，由于压帽32顶在手指皮肤上，使滑杆3难以旋转，而握柄1相对于滑杆3旋转，并向下移动，从而在卸去刀杆2的磁性的同时，使刀杆2的螺丝刀头21完成一部分向下旋拧螺钉的过程，进一步降低了旋拧螺钉的工作量。In the third embodiment shown in Figure 3, different from the first embodiment, the upper surface of the pressure cap 32 is formed with rough lines; There are external threads on the top, and the two cooperate with each other so that when the slide bar 3 moves axially along the slideway 10, the slide bar 3 and the handle 1 are relatively rotated about the slide bar axis under the constraints of the thread pair; thus, in In the process of gradually decompressing the compression spring 4, the slide bar 3 is difficult to rotate because the press cap 32 is pressed against the skin of the fingers, while the handle 1 rotates relative to the slide bar 3 and moves downward, thereby removing the Simultaneously with the magnetic properties of the knife bar 2, the screwdriver head 21 of the knife bar 2 completes a part of the process of screwing down the screw, which further reduces the workload of screwing the screw.

以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications and equivalent replacements made within the spirit and principles of the present invention should be included within the protection scope of the present invention .

Claims (2)

1. A magnetic electrician screwdriver, which comprises a grab handle (1); the lower end of the grab handle (1) is fixedly provided with a cutter bar (2) extending into the grab handle, the cutter bar (2) is made of ferromagnet, and the lower end of the cutter bar is provided with a screwdriver head (21); a slide way (10) which is coaxial with the cutter bar (2) and penetrates through the upper end of the grab handle is arranged in the grab handle (1); a sliding rod (3) capable of sliding along the axis of the sliding way is arranged in the sliding way (10), and a permanent magnet (31) is fixed at the lower end of the sliding rod (3); the upper end of the sliding rod (3) extends out of the grab handle (1), a pressing cap (32) is formed above the grab handle, and a pressure spring (4) is arranged between the pressing cap (32) and the grab handle (1); the pressure spring (4) enables the sliding rod (3) to ascend to an upper limit position in a natural state, so that the permanent magnet (31) is far away from the cutter bar (2); when the sliding rod (3) is pressed down to a lower limit position, the permanent magnet (31) at the lower end of the sliding rod (3) props against the cutter bar (2) so as to obviously magnetize the cutter bar (2); the method is characterized in that: an induction coil (5) is sleeved on the outer side of the sliding area of the grab handle (1) corresponding to the permanent magnet (31); the periphery of the cutter bar (2) is wrapped with a metal pipe sleeve which is lined with an insulating layer between the cutter bar and the metal pipe sleeve; the metal pipe sleeve is divided into two half pipe pieces (221, 222) with insulating gaps by a middle tangent plane passing through the axis of the cutter rod, and the two half pipe pieces (221, 222) are respectively and electrically connected with two output poles of the induction coil (5); a patch LED (6) close to the screwdriver head (21) is lapped on the insulation gap, and the upper surface of the pressing cap (32) is provided with rough grains; the slide way (10) is internally provided with an internal thread (101), the slide rod (3) is provided with an external thread, and the internal thread and the external thread are matched with each other, so that when the slide rod (3) moves along the axial direction of the slide way (10), the slide rod (3) and the grab handle (1) relatively rotate relative to the axis of the slide rod under the constraint of the thread pair.

2. The magnetic electrician screwdriver of claim 1, wherein: the cutter bar (2) is composed of silicon steel columns.