CN221221098U - Tolerance adjusting device - Google Patents

Abstract

The utility model discloses a tolerance adjusting device, which comprises an upper supporting piece, a lower supporting piece, a threaded pipe, a friction unit and an adjusting nut, wherein the surface of the threaded pipe is provided with left-handed external threads, the left-handed external threads are in limiting connection with the upper supporting piece, the adjusting nut is matched with the threaded pipe, the inner wall of the threaded pipe is provided with left-handed internal threads and is clamped and limited on the lower supporting piece, the friction unit is in limiting fit with the threaded pipe and is used for driving the threaded pipe to rotate in interference fit with a bolt, the lower supporting piece comprises a clamping sleeve, a lower clamping hook is arranged below the clamping sleeve, an anti-falling hook for limiting the adjusting nut is arranged above the clamping sleeve, the top of the anti-falling hook is provided with a damping mechanism extending to one side of the upper supporting piece, and the bottom of the upper supporting piece is provided with a blocking mechanism matched with the damping mechanism.

Description

Tolerance adjusting device

Technical Field

The utility model belongs to the technical field of tolerance adjustment, and particularly relates to a tolerance adjustment device.

Background

In the assembly process of two or more assemblies, the assemblies are easy to be incapable of being matched accurately due to bending deformation, accumulated tolerance and other reasons of the assemblies, so that an axial tolerance adjusting device is usually needed to control the axial position of an adjusting component to eliminate the deviation, and the relative positions of parts meet the design requirement. The existing axial tolerance adjusting device in the market mostly adopts a metal piece or a metal and plastic assembly, and realizes axial tolerance adjustment by utilizing the friction between a bolt and a friction unit.

In the prior art, when the ejection force is too large during adjustment, the upper end face of the adjuster is smaller, the pressure intensity between the adjuster and the upper sheet metal is larger, the ejection force of the upper sheet metal is too large after adjustment and unscrewing, the sheet metal deforms, and meanwhile, the tolerance adjusting device is used as an assembly, and part of components are found to fall off in the preassembled transportation or carrying process of the client.

Disclosure of utility model

In order to solve the problems, the utility model provides a tolerance adjusting device, which is provided with a damping mechanism and a blocking mechanism, wherein the blocking mechanism blocks the damping mechanism to prevent the upper support member from continuously rotating, and plays a role in preventing falling in the transportation process.

The technical scheme provided by the utility model is as follows:

A tolerance adjustment device comprising an upper support and a lower support;

the surface of the threaded pipe is provided with left-handed external threads and is in limit connection with the upper supporting piece;

the adjusting nut is matched with the threaded pipe, the inner wall of the adjusting nut is provided with left-handed internal threads, and the adjusting nut is clamped and limited on the lower supporting piece;

the friction unit is in limit fit with the threaded pipe and is used for driving the threaded pipe to rotate in interference fit with the bolt;

The lower support piece comprises a clamping sleeve, a lower clamping hook is arranged below the clamping sleeve, an anti-unhooking hook for limiting the adjusting nut is arranged above the clamping sleeve, a damping mechanism extending to one side of the upper support piece is arranged at the top of the anti-unhooking hook, the upper support piece is a hollow flat pad, and a blocking mechanism matched with the damping mechanism is arranged at the bottom of the upper support piece.

In some embodiments, the top of the threaded pipe is provided with a groove, the upper supporting piece is embedded in the groove, the interior of the threaded pipe is wide at the upper part and narrow at the lower part, and the inner wall of the upper wide part is in a polyhedron shape.

In some embodiments, the friction unit is a hollow sleeve of plastic material, and the upper portion of the friction unit is arranged in a polyhedral shape matched with the inner wall of the threaded pipe.

In some embodiments, the friction unit is provided with a plurality of longitudinal grooves at the lower part, a circle of convex hooks are formed at the bottom of the friction unit in an outward protruding mode, and a boss matched with the convex hooks is arranged at the bottom of the threaded pipe.

In some embodiments, the adjusting nut is a hexagonal nut and the ferrule is a hollow hexagonal ferrule, the inner wall of which is engaged with the outer wall of the hexagonal nut.

In some embodiments, the ferrule bottom is provided with an anti-drop step.

In summary, the beneficial effects of the utility model are as follows:

(1) According to the utility model, the damping mechanism and the blocking mechanism are arranged, so that the blocking mechanism blocks the damping mechanism to prevent the upper support member from continuously rotating, and the upper support member plays a role in preventing falling in the transportation process, and only when the upper support member is used, the bolt drives the friction unit and the threaded pipe to rotate so as to overcome the falling resistance, and then the upper support member can rotate upwards.

(2) The upper supporting piece is a flat pad and is embedded in the groove at the top of the threaded pipe through the riveting process, the assembly process is simple, the upper supporting piece adopts a large flat pad combined structure, the contact surface with the upper metal plate is enough, the pressure intensity between the surfaces is small, and ejection is prevented.

(3) The lower part of the friction unit is provided with a plurality of longitudinal grooves, the longitudinal grooves enable the lower part of the friction unit to have deformation capability, the friction unit is convenient to insert into the threaded pipe, and when the friction unit is completely inserted into the threaded pipe, the longitudinal grooves reset, and the boss is hooked by the convex hooks, so that the assembling stability of the friction unit is ensured.

Drawings

FIG. 1 is a schematic diagram of an explosive structure according to the present utility model;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a cross-sectional view of an exploded construction of the present utility model;

FIG. 4 is a cross-sectional view of the present utility model;

FIG. 5 is a schematic diagram of the tuning tolerance of the present utility model;

FIG. 6 is a schematic view of the lower support structure of the present utility model;

Fig. 7 is a schematic cross-sectional view of a threaded pipe according to the present utility model.

The reference numerals are as follows:

1. An upper support; 2. a lower support; 3. a threaded tube; 4. an adjusting nut; 5. a friction unit; 6. a bolt; 11. a blocking mechanism; 21. a cutting sleeve; 22. a lower clamping hook; 23. unhooking prevention; 24. a damping mechanism; 25. an anti-falling step; 31; a boss; 51. a convex hook.

Detailed Description

The present utility model will be further described in detail with reference to the following examples and drawings for the purpose of enhancing the understanding of the present utility model, which examples are provided for the purpose of illustrating the present utility model only and are not to be construed as limiting the scope of the present utility model.

As shown in fig. 1-4, a tolerance adjusting device comprises an upper supporting piece 1, a lower supporting piece 2, a threaded pipe 3, an adjusting nut 4 and a friction unit 5, wherein the surface of the threaded pipe 3 is provided with left-handed external threads, the threaded pipe is in limiting connection with the upper supporting piece 1, the adjusting nut 4 is matched with the threaded pipe 3, the inner wall is provided with left-handed internal threads, the clamping connection is limited on the lower supporting piece 2, the friction unit 5 is in limiting connection with the threaded pipe 3 and is used for driving the threaded pipe 3 to rotate in an interference fit with a bolt 6, when the tolerance adjusting device is used, the bolt 6 is inserted into the friction unit 5, the threaded pipe 3 rotates in the same direction with the bolt 6 under the driving of the friction unit 5, the left-handed external threads of the threaded pipe are matched with the left-handed internal threads on the adjusting nut 4, and move upwards, and the upper supporting piece 1 and the lower supporting piece 2 respectively prop against upper and lower plates, so that tolerance adjustment of plates is realized.

In this embodiment, the lower support 2 includes a ferrule 21, a lower hook 22 is disposed below the ferrule 21, an anti-unhooking hook 23 for limiting the adjusting nut 4 is disposed above the ferrule 21, a damping mechanism 24 extending to one side of the upper support 1 is disposed at the top of the anti-unhooking hook 23, the upper support 1 is a hollow flat pad, and a blocking mechanism 11 matched with the damping mechanism 24 is disposed at the bottom.

Specifically, the lower hook 22 is used for clamping the lower sheet metal, and the anti-falling hook 23 extends in a super-inward direction and is used for clamping the adjusting nut 4 to prevent the adjusting nut from moving in the vertical direction; the upper supporting piece 1 is a hollow flat pad, the contact surface with the upper gold is enough, the pressure intensity between the surfaces is small, and ejection is prevented; the damping mechanism 24 is made of high-strength nylon material, specifically PA66 or PA46, the blocking mechanism 11 is a convex hull extending towards the direction of the lower support 2, the damping mechanism 24 is matched with the blocking mechanism 11, the blocking mechanism 11 blocks the damping mechanism 24 to enable the upper support 1 not to continuously rotate under the condition that no external force is applied, the anti-falling effect is achieved in the transportation process, and only when the anti-falling device is used, the bolt 6 drives the friction unit 5 and the threaded tube 3 to rotate to overcome the anti-falling resistance, and then the friction unit and the threaded tube can rotationally move upwards.

Referring to fig. 2, in some embodiments, a groove is formed at the top of the threaded tube 3, the upper support member 1 is embedded in the groove through a riveting process, the interior of the threaded tube 3 is wider at the top and narrower at the bottom, and the inner wall of the upper wide portion is in a polyhedral shape.

Further, the friction unit 5 is a hollow sleeve made of plastic material, and the upper part of the friction unit 5 is arranged in a polyhedron shape matched with the inner wall of the threaded pipe 3.

Specifically, the upper support piece 1 is embedded in the groove at the top of the threaded pipe 3 through a riveting process, the assembly process is simple, the upper support piece 1 and the threaded pipe 3 are fixed, the friction unit 5 is attached to the polyhedron matched with the threaded pipe 3, and the friction unit 5 can drive the threaded pipe 3 to rotate in the same direction.

In a preferred embodiment, the lower part of the friction unit 5 is provided with a plurality of longitudinal grooves, the bottom of the friction unit 5 is outwards protruded to form a circle of convex hooks 51, and the bottom of the threaded tube 3 is provided with a boss 31 matched with the convex hooks 51.

Specifically, the lower part of the friction unit 5 has deformability due to the longitudinal slotting, so that the friction unit 5 is conveniently inserted into the threaded pipe 3, and when the friction unit 5 is completely inserted into the threaded pipe 3, the longitudinal slotting is reset, and the boss 31 is hooked by the convex hook 51, so that the assembling stability of the friction unit 5 is ensured.

As a further optimized embodiment, the adjusting nut 4 is a hexagonal nut, the clamping sleeve 21 is a hollow hexagonal clamp, and the inner wall of the hexagonal clamp is embedded with the outer wall of the hexagonal nut.

Specifically, the hexagonal clamp inner wall is embedded with the hexagonal nut outer wall, and the stability of the lower support piece 2 and the adjusting nut 4 is further improved due to mutual limiting.

Further, the bottom of the clamping sleeve 21 is provided with an anti-falling step 25, and the anti-falling step 25 is arranged between the clamping sleeve 21 and the lower clamping hook 22 and extends inwards to prevent the adjusting nut 4 from falling off from the lower part of the lower supporting piece 2.

It should be noted that, in the drawings or the text of the specification, implementations not shown or described are all forms known to those of ordinary skill in the art, and not described in detail. Furthermore, the above definitions of the elements and methods are not limited to the specific structures, shapes or modes mentioned in the embodiments.

It should also be noted that examples of parameters that include particular values may be provided herein, but that these parameters need not be exactly equal to the corresponding values, but may approximate the corresponding values within acceptable error margins or design constraints. The directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., are merely directions with reference to the drawings, and are not intended to limit the scope of the present application.

While the foregoing description illustrates and describes the preferred embodiments of the present utility model, as noted above, it is to be understood that the utility model is not limited to the forms disclosed herein but is not to be construed as excluding other embodiments, and that various other combinations, modifications and environments are possible and may be made within the scope of the inventive concepts described herein, either by way of the foregoing teachings or by those of skill or knowledge of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims (6)

1. A tolerance adjustment device, characterized by comprising an upper support (1) and a lower support (2);

The surface of the threaded pipe (3) is provided with left-handed external threads and is in limit connection with the upper supporting piece (1);

the adjusting nut (4) is matched with the threaded pipe (3), left-handed internal threads are arranged on the inner wall of the adjusting nut, and the adjusting nut is clamped and limited on the lower supporting piece (2);

the friction unit (5) is in limit fit with the threaded pipe (3) and is used for driving the threaded pipe (3) to rotate in interference fit with the bolt (6);

The lower support piece (2) comprises a clamping sleeve (21), a lower clamping hook (22) is arranged below the clamping sleeve (21), an anti-unhook (23) used for limiting an adjusting nut (4) is arranged above the clamping sleeve (21), a damping mechanism (24) extending towards one side of the upper support piece (1) is arranged at the top of the anti-unhook (23), the upper support piece (1) is a hollow flat pad, and a blocking mechanism (11) matched with the damping mechanism (24) is arranged at the bottom of the upper support piece.

2. Tolerance adjusting device according to claim 1, characterized in that the threaded tube (3) is provided with a groove at the top, the upper support member (1) is embedded in the groove, the threaded tube (3) is internally provided with a wide upper part and a narrow lower part, and the inner wall of the wide upper part is in the shape of a polyhedron.

3. Tolerance-adjusting device according to claim 2, characterized in that the friction unit (5) is a hollow sleeve of plastic material, the upper part of the friction unit (5) being arranged in the shape of a polyhedron fitting the inner wall of the threaded tube (3).

4. A tolerance adjusting device according to claim 3, wherein the lower part of the friction unit (5) is provided with a plurality of longitudinal grooves, the bottom of the friction unit (5) is outwards protruded to form a circle of convex hooks (51), and the bottom of the threaded tube (3) is provided with a boss (31) matched with the convex hooks (51).

5. Tolerance adjustment device according to claim 1, characterized in that the adjustment nut (4) is a hexagonal nut, the ferrule (21) is a hollow hexagonal ferrule, and the inner wall of the hexagonal ferrule engages the outer wall of the hexagonal nut.

6. Tolerance adjusting device according to claim 5, characterized in that the bottom of the ferrule (21) is provided with an anti-slip step (25).