Fastener mounting device with anti-falling function

Abstract

The utility model discloses a fastener mounting device with an anti-falling function, which comprises a wrench body, and a polygonal clamping opening for clamping a fastener is arranged at the front end of the wrench body; a stepped table board which is parallel to the bottom surface of the opening end, extends towards the inner side in the circumferential direction of the inner wall and is used for bearing the circumferential bottom side edge of the fastener to limit the fastener from falling off from the opening is arranged at the polygonal clamping opening in the wrench body; a strip-shaped hole which is positioned at the edge of the upper side of the fastener and extends along the direction of the end surface where the fastener is placed is also formed in the inner wall of the polygonal clamping opening corresponding to the upper side of the step surface; steel balls and compression springs are mounted in the strip-shaped holes, and the steel balls partially extend out of the outer edge of the inner wall of the polygonal clamping opening under the action of self-expanding elastic force of the compression springs; when the fastener is clamped at the polygonal clamping opening, the bottom side of the fastener is supported at the step surface, and the steel ball at the edge of the upper side of the fastener extends out to lock the fastener at the polygonal clamping opening from the top side, so that the fastener is prevented from falling off in the mounting process, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tool equipment, in particular to a fastener installation device with a function of preventing falling.

Background Art

[0002] In the prior art, tools for installing fasteners are usually open-end wrenches or sockets. When using an open-end wrench or socket to install bolt and nut fasteners, before the fasteners are engaged and clamped, due to reasons such as human collision, unstable operation, and bad installation angle, the bolts and nuts are likely to fall off. When the fallen fasteners fall into the internal part of an important installation component, the assembly risk is greatly increased and the assembly efficiency is reduced.

[0003] Existing wrenches or sockets with a magnetic attraction function can only attract steel fasteners and are not suitable for aluminum fasteners. Therefore, a falling-preventing installation tool with universality for fastener materials is particularly necessary.

Content of the Utility Model

[0004] The utility model provides a fastener installation device with a function of preventing falling, which can effectively increase the assembly safety and improve the assembly efficiency.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A fastener installation device with a function of preventing falling, which is used for locking and installing and connecting fasteners, includes a wrench body. A polygonal clamping opening for clamping the fasteners is arranged at the front end of the wrench body;

[0007] A stepped table surface parallel to the bottom surface of the open end and extending inward along the inner wall circumference is arranged at the polygonal clamping opening of the wrench body, and is used for supporting the circumferential bottom edge of the fastener to limit the fastener from falling from the opening;

[0008] At least one strip-shaped hole located at the upper edge of the fastener and extending along the end face direction where the fastener is placed is further opened on the inner wall of the polygonal clamping opening corresponding to the upper side of the stepped table surface. The inner diameter of the strip-shaped hole gradually shrinks and becomes smaller at the hole opening;

[0009] A steel ball and a compression spring are installed in the strip-shaped hole. The steel ball partially extends out of the outer edge of the inner wall of the polygonal clamping opening under the self-expansion elastic force of the compression spring;

[0010] When the fastener is clamped at the polygonal clamping opening, it overcomes the elastic force of the compression spring to push the steel ball back into the strip-shaped hole. The bottom side of the fastener is supported at the stepped table surface below the polygonal clamping opening, and the steel ball at the upper edge of the fastener extends out from the top side to lock the fastener at the polygonal clamping opening.

[0011] Preferably, strip-shaped holes are respectively arranged on two opposite sides of the polygonal clamping opening. Oppositely arranged steel balls and compression springs are respectively installed in the two strip-shaped holes. Under the action of the self-expansion elastic force of their respective compression springs, the two steel balls symmetrically protrude from the outer edge of the inner wall of the polygonal clamping opening to limit the upper edge of the fastener from both sides.

[0012] Preferably, the fastener is a nut or a bolt. During assembly, the top cover of the nut or bolt is clamped between the steel ball and the stepped table surface at the polygonal clamping opening.

[0013] Preferably, the strip-shaped hole is a cylindrical cavity hole, and the diameter of the hole at the orifice of the cylindrical cavity hole gradually decreases to form a port for restricting the dropping of the steel ball.

[0014] The beneficial effects of the present utility model are as follows:

[0015] The placement and withdrawal of the fastener in the polygonal clamping opening of the wrench body are controlled by the compression and rebound mechanism composed of the steel ball and the compression spring. At the same time, the dropping of the fastener is controlled by the stepped table surface, achieving the function of preventing the fastener from falling during installation. Moreover, the overall structure is all mechanical, suitable for locking fasteners of different materials, with universality. There is no need to worry about the problem that the existing clamping wrench only has a suction effect on magnetic parts and cannot suck and install non-magnetic aluminum alloy fasteners. Overall, the operation is simple and convenient, and the installation method is reliable; the entire locking tool has a simple structure and is easy to use, effectively reducing the operation difficulty and error rate.

Description of the Drawings

[0016] Figure 1 is the top-down three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is the cross-sectional structural schematic diagram of the present utility model;

[0018] Figure 3 is the assembly structural schematic diagram when assembling a nut fastener in the present utility model.

Specific Embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0020] A fastener installation device with a function of preventing falling, as Figures 1 to 3As shown in the figure, it is used for locking and installation connection of nuts or bolts in fasteners, including a wrench body 1. At the front end of the wrench body 1, there is a regular hexagonal clamping opening 2 for clamping fasteners. On the wrench body 1 at the regular hexagonal clamping opening 2, there is a stepped table surface 3 that is parallel to the bottom surface of the open end and extends inward along the inner wall circumference, which is used to support the circumferential bottom edge of the fastener to prevent the fastener from falling out of the opening. On the inner wall of the regular hexagonal clamping opening 2 corresponding to the upper side of the stepped table surface 3, there are also two strip-shaped holes 4 located at the upper edge of the fastener and extending along the end face direction where the fastener is placed. The two strip-shaped holes 4 are arranged on the opposite sides in the regular hexagonal clamping opening 2. In this embodiment, the strip-shaped hole 4 is a cylindrical cavity hole and the inner diameter gradually shrinks and becomes smaller at the hole opening. A steel ball 5 and a compression spring 6 are installed in the strip-shaped hole 4. The steel ball 5 partially protrudes from the outer edge of the inner wall of the regular hexagonal clamping opening 2 under the self-expansion elastic force of the compression spring 6. The diameter of the hole opening of the cylindrical cavity hole gradually decreases to form a port for restricting the fall of the steel ball 5.

[0021] When the fastener is clamped at the regular hexagonal clamping opening 2, such as the nut fastener 7 in this embodiment, it overcomes the elastic force of the compression spring 6 and pushes the steel ball 5 back into the strip-shaped hole 4. The bottom side of the nut fastener 7 is supported at the stepped table surface 3 below the regular hexagonal clamping opening 2. The two steel balls 5 symmetrically protrude from the outer edge of the inner wall of the regular hexagonal clamping opening 2 under the self-expansion elastic force of their respective compression springs 6 to limit the upper edge of the fastener from both sides, and clamp the nut fastener between the steel ball 5 and the stepped table surface 3 at the regular hexagonal clamping opening 2.

[0022] In this embodiment, the placement and withdrawal of the fastener in the regular hexagonal clamping opening of the wrench body are controlled by the compression and rebound mechanism composed of the steel ball and the compression spring. At the same time, the fall of the fastener is controlled by the stepped table surface, achieving the function of preventing the fastener from falling during installation. After the nut is installed, the steel ball is extruded and retracted into the strip-shaped hole, so that the nut disengages from the open wrench, thereby completing the installation of the fastener in the state of preventing the fastener from falling, effectively improving the assembly efficiency and safety of the fastener.

[0023] The above embodiments are only the preferred embodiments of the present invention, and do not limit the implementation scope of the present invention. Any equivalent changes made according to the shape, structure and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A fastener installation device with an anti-falling function, used for the locking and installation connection of fasteners, characterized in that, It includes a wrench body, and a polygonal clamping opening for clamping the fastener is provided at the front end of the wrench body; At the polygonal clamping opening of the wrench body, a stepped table surface parallel to the bottom surface of the open end and extending inward along the inner wall circumferentially is provided, which is used to support the circumferential bottom edge of the fastener to prevent the fastener from falling from the opening; At least one strip-shaped hole located at the upper edge of the fastener and extending along the end face direction where the fastener is placed is further formed on the inner wall of the polygonal clamping opening corresponding to the upper side of the stepped table surface, and the inner diameter of the strip-shaped hole gradually shrinks and becomes smaller at the hole opening; A steel ball and a compression spring are installed in the strip-shaped hole, and the steel ball partially extends out of the outer edge of the inner wall of the polygonal clamping opening under the self-expansion elastic force of the compression spring; When the fastener is clamped at the polygonal clamping opening, it overcomes the elastic force of the compression spring to push the steel ball back into the strip-shaped hole, and the bottom side of the fastener is supported at the stepped table surface below the polygonal clamping opening, and the steel ball at the upper edge of the fastener extends out to lock the fastener at the polygonal clamping opening from the top side.

2. The fastener installation device with an anti-drop function according to claim 1, characterized in that: Strip-shaped holes are respectively arranged on the opposite sides of the polygonal clamping opening, and the steel balls and compression springs arranged oppositely are respectively installed in the two strip-shaped holes. The two steel balls symmetrically extend out of the outer edge of the inner wall of the polygonal clamping opening under the self-expansion elastic force of their respective compression springs to limit the upper edge of the fastener from both sides.

3. The fastener installation device with an anti-falling function according to claim 1, characterized in that: The fastener is a nut or a bolt. During assembly, the top cover of the nut or bolt is clamped between the steel ball and the stepped table surface at the polygonal clamping opening.

4. The fastener installation device with an anti-falling function according to claim 1, characterized in that: The strip-shaped hole is a cylindrical cavity hole, and the diameter of the cylindrical cavity hole gradually decreases at the hole opening to form a port for restricting the fall of the steel ball.

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