Hardware tool

Abstract

The utility model relates to a hardware tool, in particular to a wrench capable of better achieving the clamping function, and aims to solve the problems that in the prior art, wrenches are single in type and narrow in use range, and meanwhile metal wrenches are prone to causing friction damage to the outer surfaces of bolts or nuts. The utility model comprises a head part and a tail part, the head part comprises a plate opening composed of a plate jaw I and a plate jaw II, one side of the plate jaw I and / or the plate jaw II close to the plate opening is provided with a plurality of bosses protruding towards the direction of the plate opening, and the outer surface of each boss is provided with a plurality of strip-shaped ribs. According to the utility model, the bosses and the ribs are arranged, so that a better clamping effect can be provided, and sliding is prevented; and compared with steel profiles, the plastic injection molding is lower in cost, more economical and more environment-friendly.

Description

Technical Field

[0001] The utility model relates to a hardware tool, in particular to a wrench which can better realize the clamping effect. Background Art

[0002] A wrench is a commonly used maintenance hardware tool. Conventional wrenches have hexagonal or linear structures, and can be used to tighten ordinary hexagonal bolts and nuts. Its working principle is to use the lever principle to apply external force to the tail of the wrench to screw the bolts or nuts. The inventor of the adjustable wrench is the Swede Johansson. The width of the wrench can be adjusted within a certain range. It is a tool used to tighten and loosen nuts and bolts of different specifications. Existing wrenches are mostly made of steel materials. On the one hand, it is easy to damage the edges and corners of the nuts. On the other hand, it is easy to slip when twisting, resulting in a waste of force. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a hardware tool that can better achieve the clamping effect. Specifically, the utility model includes a head and a tail, the head includes a plate mouth composed of a plate jaw I and a plate jaw II, the plate jaw I and / or the plate jaw II are provided with a plurality of bosses protruding toward the plate mouth on one side close to the plate mouth, and the outer surface of the boss is provided with a plurality of strip-shaped ridges.

[0004] Furthermore, the plate jaw I is movably connected to the head of the hardware tool, and a receiving cavity is provided on the head that runs through the thickness direction. A worm is rotatably arranged in the receiving cavity, and a matching tooth that cooperates with the worm is provided at the bottom of the plate jaw I. The rotation of the worm can drive the plate jaw I to move left and right. The adjustable wrench can be applied to more scenarios, especially to meet the needs of bolts or nuts of different diameters.

[0005] Furthermore, the side of the plate jaw I away from the plate mouth is a straight edge, and the matching teeth at the bottom of the plate jaw I can be completely separated from the worm, so that the plate jaw I can be separated from other parts of the hardware tool, and the plate jaw I can be turned over and installed with the worm. One side of the plate jaw I is provided with a boss and a convex ridge, and the other side is straight, so different sides can be used according to actual needs, expanding the scope of application of the wrench.

[0006] When the utility model is used, the size of the plate mouth is adjusted by the worm, and the part to be clamped is clamped by the plate jaws I and II to form a plate mouth and fix the part to be clamped, and then the tail is turned to achieve twisting. After the operation is completed, the plate mouth is enlarged by the worm, and the hardware tools are removed from the part to be clamped. Plate jaws I and / or plate jaws II are provided with a boss protruding toward the plate mouth. If only plate jaws I are provided with bosses, three contact points or three contact lines appear between the plate mouth and the part to be clamped. If both plate jaws I and II are provided with bosses, four contact points or four contact lines appear between the plate mouth and the part to be clamped. The more contact points, the better the clamping effect. At the same time, in order to increase the friction force, a plurality of convex edges are provided on the surface of the boss. It can achieve a better clamping effect, and even increase the contact points and contact surfaces, prevent waste of force, and prevent the appearance of bolts or nuts from being damaged. Moreover, after adopting this structure, it can be used for screwing cylindrical nuts as well as hexagonal nuts, and its application scope is wider.

[0007] Furthermore, the boss is semi-cylindrical, the length direction of the ridge is consistent with the thickness direction of the wrench, and the longitudinal section of the ridge is triangular or fan-shaped. Preferably, the ratio of the height of the ridge to the height of the boss is 1:4-8. If the height of the ridge is too high, it is easy to reduce its stability and its own firmness. If the height of the ridge is too short, the clamping effect is greatly reduced. The height ratio selected by the utility model can better meet the dual requirements of its own firmness and clamping friction.

[0008] Furthermore, in order to reduce costs and reduce the possibility of scratches on the surface of bolts or nuts, that is, to reduce damage to the outer surface of bolts or nuts, plate jaw II is integrally injection molded with the head and tail, and plate jaw I is injection molded separately. The original steel material is replaced with plastic material, which greatly reduces the weight of the tool on the one hand, and at the same time reduces the production cost, which is more green and economical than steel materials.

[0009] Furthermore, in order to expand the application scope of the hardware tool and also to reduce the weight of the tool, a level is provided on the tail below the accommodating cavity, which can be used as a reference to determine the horizontal direction when hanging photos and other items on the wall.

[0010] Furthermore, the tail is provided with a plurality of functional holes, which are circular holes with grooves on both sides. The grooves can be circular, or one side can be circular and the other side can be hexagonal. The existence of the functional holes can reduce the weight of the tool on the one hand, and can also be used as a wrench with a fixed diameter on the other hand.

[0011] Furthermore, a mounting hole is provided on the top of plate jaw I and / or plate jaw II, and the mounting hole may be a hexagonal mounting hole, in which a structure having a hexagonal connecting column at one end and a working component at the other end may be installed, such as a cross screwdriver head.

[0012] Furthermore, a mounting hole is provided on the plate jaw II, and the mounting hole can be used to install tools such as saw blades.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model has a wider scope of application and a wider range of occasions; by providing bosses and convex edges, the functions of the existing hexagonal plate openings and linear plate openings can be combined into one, which can be used to screw hexagonal nuts and round nuts, and can also provide a better clamping effect to prevent sliding;

[0015] 2. The utility model is formed by plastic injection molding, so its cost is more economical and environmentally friendly than that of steel profiles. At the same time, because plastic molding is used, the friction damage of metal materials to the nut can be reduced accordingly;

[0016] 3. The utility model integrates more functions on the basis of the wrench, and can be used as a hand saw, a screwdriver, a socket wrench, etc., and is a comprehensive hardware tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0018] Figure 2 This is an exploded view of the utility model 1;

[0019] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present utility model;

[0020] Figure 4 This is a schematic diagram of the plate jaw I after the working parts are installed in Example 2;

[0021] Among them, 1-plate jaw I; 2-plate jaw II; 3-boss; 4-convex ridge; 5-accommodating chamber; 6-worm; 7-matching tooth; 8-level; 9-functional hole; 10-installation shaft; 11-operating part; 12-saw blade. DETAILED DESCRIPTION

[0022] The utility model is further explained below in conjunction with the accompanying drawings and embodiments. Figure 1 For reference, the left and right sides are the left and right ends, Figure 1 The upper side is the top / upper part / upper side, Figure 1 The lower side is the tail / lower part / lower side, and the definition of this orientation is only for the convenience of understanding the present utility model and is not used to limit the protection scope of the present utility model.

[0023] Example 1

[0024] A hardware tool, which is an adjustable wrench composed of a head and a tail, wherein the head is the working part and the tail is the part for applying external force. The head is driven to rotate by applying external force through the tail, thereby screwing the stud or nut fixed by the head. The head includes a plate mouth composed of a plate jaw Ⅰ1 and a plate jaw Ⅱ2, such as Figure 1 and 2 As shown, the plate jaw Ⅰ1 is movably connected to the head of the hardware tool, and a receiving cavity 5 is provided on the head that runs through the thickness direction. A mounting shaft 10 is provided in the receiving cavity 5, and a worm 6 is rotatably mounted on the mounting shaft 10. A matching tooth 7 that cooperates with the worm 6 is provided at the bottom of the plate jaw Ⅰ1, and the plate jaw Ⅰ1 can be driven to move left and right by the rotation of the worm 6. The jaw Ⅰ1 can be removed from the tool alone, and the matching tooth 7 at the bottom of the plate jaw Ⅰ1 can be completely separated from the worm 6, so that the plate jaw Ⅰ2 can be separated from the other parts of the hardware tool, and the plate jaw Ⅰ2 can be turned over and installed with the worm 6. The plate jaw Ⅱ2 is integrally injection molded with the head and tail, and the plate jaw Ⅰ1 is separately injection molded. The original steel material is replaced with a plastic material, which greatly reduces the weight of the tool on the one hand, and at the same time reduces the production cost. Compared with steel materials, it is a more green and economical raw material.

[0025] The plate jaw Ⅰ1 and / or plate jaw Ⅱ2 are provided with a plurality of semi-cylindrical bosses 3 protruding toward the plate mouth on one side close to the plate mouth, and the outer surface of the boss 3 is provided with a plurality of strip-shaped ridges 4, the longitudinal section of the ridge 4 is a triangle, the height of the triangle of the ridge 4 from the outer edge of the semi-cylindrical boss 3 is the height of the ridge 4, the radius of the semi-cylindrical boss 3 is the height of the boss 3, and the height of the boss 3 is 5 times the height of the ridge 4.

[0026] When in use, the plate opening formed by the plate jaws Ⅰ1 and Ⅱ2 is enlarged by the rotation of the worm 6, and the stud or nut is placed in the plate opening. Then, the plate opening formed by the plate jaws Ⅰ1 and Ⅱ2 is tightly clamped by the rotation of the worm 6, and then the tail is rotated to screw the stud or nut. Since the wrench is injection molded, it can reduce costs and reduce the friction damage of the original metal wrench to the bolt or nut on the contact surface of the bolt and nut. At the same time, the arrangement of the boss 3 and the ridge 4 on the surface of the plate jaws Ⅰ1 and Ⅱ2 can correspondingly increase the contact surface between the bolt or nut and the plate opening. Whether it is a hexagonal nut or a round nut, the tool can be used, and the scope of application is wider.

[0027] Example 2

[0028] This embodiment has the same structure as Embodiment 1 except for the following features:

[0029] The cross section of the convex ridge 4 is kind, and a boss 3 and a convex ridge 4 are provided on one side of the plate jaw Ⅰ1, and the edge on the other side is a conventional straight line. In order to expand the scope of use of the hardware tool and also to reduce the weight of the tool, a spirit level 8 is provided on the tail below the accommodating cavity 5, which can be used as a reference to determine the horizontal direction when hanging photos and other items on the wall. The tail is provided with a plurality of functional holes 9, and the functional holes 9 are circular holes with countersunk grooves on both sides. The countersunk grooves can be circular, or one side is circular and the other side is hexagonal. The existence of the functional holes can reduce the weight of the tool on the one hand, and can also be used as a wrench with a fixed diameter on the other hand. A hexagonal mounting hole is provided on the top of the plate jaw Ⅰ1 and / or the plate jaw Ⅱ2, and the mounting hole can be used to install a connecting column with a hexagonal prism at one end and a working component 11 at the other end. For example, the working component 11 is a cross-shaped screwdriver head, etc. Figure 4 As shown, the plate jaw Ⅰ1 with the cross screwdriver head installed can be used as a screwdriver alone. In addition, the plate jaw Ⅱ2 is also provided with a mounting hole, which can be used to install tools such as a saw blade 12. When the saw blade 12 is used, the plate jaw Ⅰ1 is removed for more convenient use.

Claims

1. A hardware tool, comprising a head and a tail, wherein the head comprises a plate mouth composed of a plate jaw Ⅰ (1) and a plate jaw Ⅱ (2), characterized in that: The plate jaw I (1) and / or the plate jaw II (2) are provided with a plurality of bosses (3) protruding toward the plate opening on one side close to the plate opening, and the outer surface of the bosses (3) is provided with a plurality of strip-shaped ridges (4).

2. The hardware tool according to claim 1, characterized in that: The plate jaw I (1) is movably connected to the head of the hardware tool, and a receiving cavity (5) is provided on the head which penetrates the thickness direction. A worm (6) is rotatably arranged in the receiving cavity (5). A matching tooth (7) which cooperates with the worm (6) is provided at the bottom of the plate jaw I (1), and the plate jaw I (1) can be driven to move left and right by the rotation of the worm (6).

3. The hardware tool according to claim 2, characterized in that: The side of the plate jaw I (1) away from the plate mouth is a straight edge, and the matching teeth (7) at the bottom of the plate jaw I (1) can be completely separated from the worm (6), so that the plate jaw I (1) can be separated from other parts of the hardware tool, and the plate jaw I (1) can be turned over and installed in coordination with the worm (6).

4. The hardware tool according to any one of claims 1 to 3, characterized in that: The boss (3) is semi-cylindrical, the length direction of the convex ridge (4) is consistent with the thickness direction of the wrench, and the longitudinal section of the convex ridge (4) is triangular or fan-shaped.

5. The hardware tool according to claim 4, characterized in that: The plate jaw II (2) is integrally formed with the head and tail by injection molding, and the plate jaw I (1) is separately injection molded.

6. The hardware tool according to any one of claims 1 to 3, characterized in that: The ratio of the height of the ridge (4) to the height of the boss (3) is 1:4-8.

7. The hardware tool according to claim 4, characterized in that: A level (8) is provided on the tail portion below the accommodating cavity (5).

8. The hardware tool according to claim 4, characterized in that: The tail portion is provided with a functional hole (9), and the functional hole (9) is a circular hole with recessed grooves on both sides. The recessed groove may be circular, or have one side that is circular and the other side that is hexagonal.

9. The hardware tool according to claim 4, characterized in that: The top of the plate jaw Ⅰ(1) and / or the plate jaw Ⅱ(2) is provided with a mounting hole.

10. The hardware tool according to claim 4, characterized in that: The plate jaw II (2) is provided with a mounting hole, and the mounting hole can be used to mount a saw blade (12).

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