Self-locking nut dismounting structure and self-locking nut dismounting tool

Abstract

The utility model discloses a self-locking type nut dismounting structure and self-locking type nut dismounting tool, contain support and swing piece, swing piece contains extrusion part and hinged part, and the hinged part is hinged in the support and extrusion part can swing along the direction of the nut that is disassembled and assembled and rotates, and the hinged part is equipped with the extrusion part for and the side surface cooperation of the nut that rotates, relative to prior art, the utility model discloses a swing piece realizes the extrusion to the nut, when driving the nut rotation, through the extrusion surface to the driving surface side surface hexagon of nut provides the torque, because swing piece adopts the connecting mode of hinge, therefore the driving force of extrusion surface and nut side surface almost is even effect on the coincident surface of both. This has reduced the damage to nut corner greatly, has played the effect of protecting the nut.

Description

Technical Field

[0001] This utility model relates to a self-locking nut assembly / disassembly structure and a self-locking nut assembly / disassembly tool, belonging to the field of mechanical tool technology. Background Technology

[0002] like Figure 1 As shown, existing nut removal tools typically include wrenches and sockets, which drive the nut to rotate through a geometric structure that matches the nut's outer contour. However, analysis reveals that the driving force exerted by these existing nut removal tools is concentrated at the nut's hexagonal corners. For example... Figure 1 As shown, Figure 1 The arrows in the diagram indicate the direction of rotation of the tool. Although the wrench is driven by pressing against the two parallel surfaces of the nut, most of the wrench's force is actually concentrated at the two opposite corners of the nut, such as... Figure 1 Within the red elliptical area.

[0003] like Figure 2 As shown: If a socket wrench of existing technology is used, the only change is from two to six stress angles. This leads to the frequent occurrence of "collapsed corners" in nuts due to excessive force during disassembly in practical applications. Furthermore, nuts with collapsed corners are difficult to disassemble and assemble normally using existing wrenches. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a self-locking nut assembly / disassembly structure and a self-locking nut assembly / disassembly tool, which solves the problem of nut corner collapse in existing technologies and also solves the technical problem of inconvenient nut assembly / disassembly caused by nut corner collapse.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: Self-locking nut assembly / disassembly structure, including bracket and swing component; The swinging component includes a pressing part and a hinge part. The hinge part is hinged to the bracket, and the pressing part can swing relative to the bracket in the direction of rotation of the disassembled nut. The hinge section is provided with a pressing part for engaging with the side of the rotating nut.

[0006] Preferably, in the aforementioned self-locking nut assembly / disassembly structure, the nut connection side of the compression part is provided with a compression surface, the width of which is smaller than the side width of the nut to be assembled / disassembled.

[0007] Preferably, in the aforementioned self-locking nut assembly and disassembly structure, the arc of the pressing surface relative to the rotation axis of the hinge is 50-70 degrees, and the swinging component has a symmetrical structure with the straight line passing through the swing axis of the hinge as the center of symmetry.

[0008] Preferably, in the aforementioned self-locking nut assembly and disassembly structure, the bracket is provided with a placement groove, and the pressing part can swing inside the placement groove.

[0009] Preferably, in the aforementioned self-locking nut assembly and disassembly structure, the arc of the pressing surface relative to the rotation axis of the hinge is 60 degrees, and the angle of the inner surfaces on both sides of the placement groove is 70 degrees.

[0010] Preferably, in the aforementioned self-locking nut assembly and disassembly structure, the bracket is provided with a hinge hole on the side that communicates with the placement groove, and the hinge part can be rotatably placed inside the hinge hole.

[0011] Preferably, the aforementioned self-locking nut disassembly and assembly structure further includes an adjusting ring, the bracket includes multiple split brackets, and the split brackets can move radially relative to the nut being disassembled or assembled. The inner edge of the adjusting ring slides with the split brackets through an eccentric surface. The adjusting ring can rotate relative to the split brackets and be locked in multiple positions, and drive the split brackets to move radially through the eccentric surface.

[0012] Preferably, the aforementioned self-locking nut assembly and disassembly structure further includes a pressing member, and the outer edge of the bracket is provided with an adjusting ring three that can rotate relative to the bracket. The two ends of the pressing member are respectively connected to the adjusting ring three and the hinge part. When the adjusting ring three rotates relative to the bracket, the adjusting ring three drives the swinging member to move radially through the pressing member, and locks the swinging member in a number of positions by fixing the adjusting ring three to the bracket.

[0013] Preferably, in the aforementioned self-locking nut assembly / disassembly structure, an elastic device is provided between the swinging component and the bracket to drive the swinging component to swing to the initial position.

[0014] A self-locking nut assembly / disassembly tool, employing any of the aforementioned self-locking nut assembly / disassembly structures.

[0015] The beneficial effects achieved by this utility model are: Compared to existing technologies, this invention uses a swinging component to compress the nut. When the nut is driven to rotate, the compression surface provides torque to the hexagonal side of the nut's driving surface. Because the swinging component uses a hinged connection, the driving force of the compression surface and the nut's side is applied almost uniformly to their overlapping surfaces. This significantly reduces damage to the nut's corners, thus protecting the nut.

[0016] This invention can also meet the usage requirements of nuts of different specifications by adjusting the swing component relative to the rotation axis of the nut, thereby improving versatility. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an open-end wrench acting on a nut in the prior art; Figure 2This is a schematic diagram of the structure of the socket wrench of this utility model acting on the nut; Figure 3 This is an exploded view of Embodiment 1 of the present invention. Figure 4 This is a front view of Embodiment 1 of this utility model; Figure 5 This is a structural diagram of a first embodiment of the present invention with a spring clip; Figure 6 This is a structural diagram of a first embodiment of the present invention with a side spring tab; Figure 7 This is the structure of Embodiment 2 of this utility model. Figure 1 ; Figure 8 This is the structure of Embodiment 2 of this utility model. Figure 2 ; Figure 9 This is the structure of Embodiment 3 of this utility model. Figure 1 ; Figure 10 This is the structure of Embodiment 3 of this utility model. Figure 2 ; The meanings of the reference numerals in the figure are as follows: 1-Bracket; 11-Hinge hole; 12-Placement groove; 13-Allowing opening; 14-Guide structure; 2-Swing component; 21-Extrusion part; 211-Positioning groove; 212-Side spring; 22-Hinge part; 23-Extrusion surface; 24-Spring; 3-Rivet; 4-Retaining ring; 5-Handle; 6-Adjusting ring one; 61-Eccentric surface; 62-Swing arm; 7-Adjusting ring two; 71-Radial groove; 72-Drive groove; 8-Extrusion component; 81-Drive shaft; 82-Radial connector; 1A-Split bracket; 9-Adjusting ring three; 91-Extrusion groove. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention. Example

[0019] like Figure 3 and Figure 4As shown: This embodiment discloses a self-locking nut assembly / disassembly structure, including a bracket 1 and a swing member 2. The swing member 2 includes a pressing part 21 and a hinge part 22. The hinge part 22 is hinged to the bracket 1, and the pressing part 21 can swing relative to the bracket 1 in the direction of rotation of the nut being assembled / disassembled. Normally, the swing member 2 only needs to swing in the direction of rotation of the bracket 1. The nut in this embodiment includes a nut with a screw and a single nut, etc., with a helical regular hexagonal structure. The number of swing members 2 can be 1-6. When there is only one, it is used in conjunction with the opposite wrench opening plane. When used with a conventional open-end wrench, two are arranged opposite each other. When applied to an existing socket wrench, it is best to have six, matching the six sides of the nut.

[0020] The hinge portion 22 is provided with a pressing portion 21 for engaging with the side of the nut to be rotated (installed / removed). The nut-connecting side of the pressing portion 21 is provided with a pressing surface 23, the width D1 of which is smaller than the width D2 of the side of the nut to be installed / removed. Since the nut is a standard part, the width D1 of the pressing surface 23 needs to be determined according to the size of the nut to be installed / removed during actual design.

[0021] Among them, the arc of the extrusion surface 23 relative to the rotation axis of the hinge portion 22 ( Figure 4 The mid-angle (B) is 50-70 degrees, and the swinging component 2 has a symmetrical structure with the straight line passing through the swinging axis of the hinge 22 as the center of symmetry. This facilitates the bidirectional (disassembly or assembly) use of the tool. Its axis of symmetry is shown in [reference needed]. Figure 4 The dashed line P in the middle.

[0022] In order to limit the swing angle of the swinging member 2, the bracket 1 in this embodiment is provided with a placement groove 12, and the pressing part 21 can swing at a certain angle inside the placement groove 12.

[0023] Among them, the optimal arc of the extrusion surface 23 relative to the rotation axis of the hinge 22 is 60 degrees, and the optimal angle of the inner surfaces on both sides of the placement groove 12 is ( Figure 4 Angle A) in the middle is 70 degrees. Figure 4 In the figure, D3 represents the distance between the rotation axis of the hinge part 22 and the outer surface of the nut, and D4 represents the distance between the rotation axis of the hinge part 22 and the outermost edge of the pressing surface 23. Since the entire pressing part 21 has a conical cross section, D4 is greater than D3. When the swinging member 2 swings, the side of the pressing part 21 (D4 corresponds to the inclined surface) gradually increases the pressing on the side (outer side) of the nut. Figure 4In this diagram, the length of GQ is D3, and the lengths of GF, GE, and GH are D4. After the hinge 22 is tightly engaged with the nut, since D4 is greater than D3, points E and F are pressed against the nut's side under the pressure of the pressing surface 23. As described above, when the nut is pressed by multiple pressing surfaces 23 and the bracket 1 rotates, the pressing surfaces 23 rotate with the outer surface of the nut, causing the distance between the relatively arranged pressing surfaces 23 to decrease, and they slide a small distance along the outer surface of the nut (tool connection surface). When the sliding reaches a certain point, it stops. Since the swinging member 2 and the bracket 1 are hinged, the entire pressing surface 23 can be considered as being pressed against the outer surface of the nut, and its pressing area is equal to the actual overlapping area of ​​the pressing surface 23 and the outer surface of the nut. By controlling the distance between the two relatively arranged swinging members 2, the pressing surface 23 can be completely within the area of ​​the outer surface of the nut, thus preventing damage to the outer corners of the nut. During the rotation of the nut, after the swinging member 2 swings, the distance between the pressing surfaces 23 of the two opposing swinging members 2 becomes smaller, so that the swinging member 2 can act on the outer side of the nut with a larger pressing force, which can reduce the slippage caused by the nut's wear size becoming smaller to a certain extent.

[0024] Specifically, the bracket 1 has a hinge hole 11 that communicates with the placement groove 12 on its side, and the hinge part 22 can be rotatably placed inside the hinge hole 11. The swing member 2 can adopt an integral structure to improve strength. The two ends of the swing member 2 are limited by retaining rings 4 set on the side of the bracket 1. The retaining rings 4 are riveted to the two sides of the bracket 1 by rivets 3. The bracket 1 can be installed on the handle 5. In this embodiment, the bracket 1 preferably adopts an integral structure with a hollow circular structure. In order to ensure that the hexagonal nut can be smoothly inserted into its interior, a clearance opening 13 is provided in its inner hole to avoid the hexagonal corner of the nut.

[0025] like Figure 5 and Figure 6 As shown: An elastic device is provided between the swinging member 2 and the bracket 1 to drive the swinging member 2 to swing to the initial position (the position where the nut can be inserted). Figure 5 The elastic device in the middle is a spring piece 24 located at the center of the swing member 2. The spring piece 24 specifically provides an elastic restoring force that allows the swing member 2 to return to its initial position. Figure 6 The elastic element is a side spring 212 located on the side of the pressing part 21. The side spring 212 can be positioned by the positioning groove 211 on the side of the pressing part 21. The function of the elastic device is to ensure that the swinging part 2 can return to its original position when it is not under natural force, so that it can be quickly and smoothly put into the nut. It should be noted that the above-mentioned elastic device is not necessary. A rounded corner or chamfer can be provided on the outer edge of the pressing surface 23 to cooperate with the chamfer of the nut, so that the nut can be put into the swinging part 2 by relative shaking. Example

[0026] like Figure 7 and Figure 8 As shown: Compared to Embodiment 1, this embodiment adopts an adjustable design, specifically as follows: This embodiment also includes an adjusting ring 6. The bracket 1 includes multiple split brackets 1A, that is, the bracket 1 includes several split brackets 1A, and the split brackets 1A can move radially relative to the detached nut. The inner edge of the adjusting ring 6 slides with the split brackets 1A through the eccentric surface 61. The adjusting ring 6 can rotate relative to the split brackets 1A to synchronously control the adjustment of the distance between the split brackets 1A, thereby realizing the adjustment of the distance of the corresponding swinging parts 2 to meet the usage requirements of nuts of different sizes. It should be noted that the above-mentioned multiple split brackets 1A have an elastic force that always fits against the inner edge of the eccentric surface 61. The specific implementation method can adopt the spring structure in the prior art.

[0027] A rotatable adjusting ring 7 is provided outside the adjusting ring 6. The adjusting ring 7 has multiple radial grooves 71. Guide structures 14 can be provided on both sides of the split bracket 1A. The radial sliding of the split bracket 1A is achieved through the cooperation between the guide structures 14 and the radial grooves 71. The adjusting ring 6 and the adjusting ring 7 can be rotated and locked in multiple positions by the following structure: The adjusting ring 6 and the adjusting ring 7 are respectively provided with a swing arm 62 and a drive groove 72. The swing arm 62 passes through the drive groove 72. The position or angle of the swing arm 62 relative to the drive groove 72 can be adjusted. In practical applications, the adjustment of nuts of different specifications can be achieved by adjusting the position of the swing arm 62 relative to the drive groove 72. Example

[0028] like Figure 9 and Figure 10 As shown: This embodiment also includes a pressing member 8. The outer edge of the bracket 1 is provided with an adjusting ring 9 that can rotate relative to the bracket 1. The two ends of the pressing member 8 are respectively connected to the adjusting ring 9 and the hinge part 22. When the adjusting ring 9 rotates relative to the bracket 1, the adjusting ring 9 drives the swinging member 2 to move radially through the pressing member 8, and the swinging member 2 is locked in multiple positions by fixing the adjusting ring 9 to the bracket 1. The inner wall of the adjusting ring 9 is provided with a pressing groove 91. The two ends of the pressing member 8 are respectively connected to the pressing groove 91 and the hinge part 22 through the drive shaft 81. When the adjusting ring 9 is rotated, the pressing member 8 pushes or pulls the corresponding swinging member 2 to move radially, thereby adjusting to meet the usage requirements of nuts of different sizes. The general principle of this embodiment is similar to that of Embodiment 2, but it is necessary to ensure that the hinge part 22 can move radially within the hinge hole 11. Example

[0029] This embodiment discloses a self-locking nut assembly / disassembly tool, which adopts the self-locking nut assembly / disassembly structure described in any of the foregoing embodiments.

[0030] Compared to existing technologies, this invention uses a swinging member 2 to compress the nut. When driving the nut to rotate, the compression surface 23 provides torque to the driving surface (hexagonal side) of the nut. Because the swinging member 2 is hinged, the driving force of the compression surface 23 and the side of the nut is applied almost uniformly to their overlapping surfaces. This greatly reduces damage to the corners of the nut and protects the nut.

[0031] This invention can also meet the usage requirements of nuts of different specifications by adjusting the swinging component 2 relative to the rotation axis of the nut, thereby improving versatility.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A self-locking nut assembly / disassembly structure, characterized in that, Includes a support (1) and a swinging component (2); The swinging member (2) includes a pressing part (21) and a hinge part (22). The hinge part (22) is hinged to the bracket (1), and the pressing part (21) can swing relative to the bracket (1) in the direction of rotation of the disassembled nut. The hinge (22) is provided with a pressing part (21) for engaging with the side of the rotating nut.

2. The self-locking nut assembly / disassembly structure according to claim 1, characterized in that, The nut connection side of the extrusion part (21) is provided with an extrusion surface (23), the width of which is smaller than the side width of the nut to be disassembled and assembled.

3. The self-locking nut assembly / disassembly structure according to claim 2, characterized in that, The arc of the extrusion surface (23) relative to the rotation axis of the hinge (22) is 50-70 degrees, and the swing member (2) has a symmetrical structure with the straight line passing through the swing axis of the hinge (22) as the center of symmetry.

4. The self-locking nut assembly / disassembly structure according to claim 3, characterized in that, The bracket (1) is provided with a placement groove (12), and the squeezing part (21) can swing inside the placement groove (12).

5. The self-locking nut assembly / disassembly structure according to claim 4, characterized in that, The arc of the extrusion surface (23) relative to the rotation axis of the hinge (22) is 60 degrees, and the angle of the inner surfaces on both sides of the placement groove (12) is 70 degrees.

6. The self-locking nut assembly / disassembly structure according to claim 4, characterized in that, The bracket (1) is provided with a hinge hole (11) that communicates with the placement groove (12) on the side, and the hinge part (22) can be rotatably placed inside the hinge hole (11).

7. The self-locking nut assembly / disassembly structure according to claim 1 or 2, characterized in that, It also includes an adjustment ring (6), the bracket (1) includes multiple split brackets (1A), and the split brackets (1A) can move radially relative to the detached nut. The inner edge of the adjustment ring (6) slides with the split brackets (1A) through an eccentric surface (61). The adjustment ring (6) can rotate relative to the split brackets (1A) and be locked in multiple positions, and drive the split brackets (1A) to move radially through the eccentric surface (61).

8. The self-locking nut assembly / disassembly structure according to claim 1 or 2, characterized in that, It also includes a pressing member (8), and the outer edge of the bracket (1) is provided with an adjusting ring three (9) that can rotate relative to the bracket (1). The two ends of the pressing member (8) are respectively connected to the adjusting ring three (9) and the hinge part (22). When the adjusting ring three (9) rotates relative to the bracket (1), the adjusting ring three (9) drives the swing member (2) to move radially through the pressing member (8) and locks the swing member (2) in a number of positions by fixing the adjusting ring three (9) and the bracket (1).

9. The self-locking nut assembly / disassembly structure according to any one of claims 1 to 6, characterized in that, An elastic device is provided between the swinging member (2) and the support (1) for driving the swinging member (2) to swing to the initial position.

10. A self-locking nut removal and installation tool, characterized in that, The self-locking nut assembly / disassembly structure according to any one of claims 1 to 9 is adopted.

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