CN216044809U

CN216044809U - Positioning connecting device

Info

Publication number: CN216044809U
Application number: CN202121894619.3U
Authority: CN
Inventors: 单炜; 都雪; 代召起; 王磊; 刘凤丹
Original assignee: FAW Volkswagen Automotive Co Ltd
Current assignee: FAW Volkswagen Automotive Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-03-15
Anticipated expiration: 2031-08-13

Abstract

The utility model provides a positioning connecting device which comprises a positioning bolt, an eccentric pin bush and a threaded bush, wherein the eccentric pin bush is arranged on the positioning bolt; the threaded sleeve is provided with a threaded hole; the positioning bolt comprises a bolt head and a screw rod, the screw rod comprises a non-thread part and a thread part matched with the thread hole, the non-thread part is close to the bolt head and penetrates through the eccentric pin sleeve, and the thread part is far away from the bolt head and is in threaded connection with the thread hole. The device has the advantages that the device is combined with the positioning pin and the thread, the structure is simple, the operation is convenient, the space is saved, the eccentric pin bush can be used for adjusting the position to ensure the precision, the bolt can be used for locking, and the adjustment and the matching of high-precision model parts with insufficient space for simultaneously arranging the bolt and the pin become simple and easy.

Description

Positioning connecting device

Technical Field

The utility model relates to the field of fasteners, in particular to a positioning and connecting device.

Background

In engineering, two parts are fixed by bolts, and pins are required to be added if the relative position precision between the two parts is ensured. The number of bolts is not less than two in the traditional design mode, and the pin is used in two matching modes. When some parts are fixed, high precision requirements are needed, but the space of the parts is small, so that the design difficulty is greatly increased when bolts and pins are not arranged simultaneously.

Under the condition that the part of present high accuracy model can't arrange bolt and pin simultaneously, there are two kinds of modes to replace:

1. only the bolts are arranged, and the positions are repeatedly finely adjusted under the condition that the measurement precision does not meet the requirements until the bolts are locked again after the measurement is qualified.

2. Only the pins are arranged, and the positioning is fixed by glue or only the pins are used for fixing.

However, there are still some problems with the above two methods, if only using bolt to fix, when the precision does not meet the requirement and needs to be adjusted, the process is often repeated, and the second installation needs to be readjusted. If only use the pin fixed, part intensity is not enough, drops easily and appears dangerously, uses glue fixed back dismantlement inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a positioning connecting device, which is simple and easy to adjust and match high-precision model parts with insufficient space for arranging bolts and pins at the same time.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a positioning connecting device comprises a positioning bolt, an eccentric pin sleeve and a threaded sleeve; the threaded sleeve is provided with a threaded hole; the positioning bolt comprises a bolt head and a screw rod, the screw rod comprises a non-thread part and a thread part matched with the thread hole, the non-thread part is close to the bolt head and penetrates through the eccentric pin sleeve, and the thread part is far away from the bolt head and is in threaded connection with the thread hole.

Furthermore, the eccentric pin bush comprises a positioning sleeve and an adjusting sleeve arranged in the positioning sleeve, the inner circle of the adjusting sleeve and the outer circle of the positioning sleeve are not concentric, and the non-thread part is accommodated in the adjusting sleeve in a transition fit mode.

Further, the thread bush further comprises an external thread.

Furthermore, one end of the threaded sleeve is provided with an opening for guiding out waste materials.

Furthermore, the threaded sleeve is a nut and is connected with the threaded part.

Further, the major diameter of the threaded part is smaller than or equal to the diameter of the non-threaded part.

Further, the maximum value of the adjustment quantity of the eccentric pin sleeve is not larger than the maximum upper deviation of the radius of the threaded hole.

Further, the maximum upper deviation of the radius of the threaded hole is 0.5 mm.

Further, the maximum adjustment amount of the eccentric pin sleeve is 0.5 mm.

The positioning connecting device has the advantages that: the device combines the positioning pin and the thread, has simple structure and convenient operation, saves space, can adjust the position by using the eccentric pin bush to ensure the precision, can be locked by using the bolt, and ensures that the adjustment and matching of high-precision model parts with insufficient space for simultaneously arranging the bolt and the pin become simple and easy.

Drawings

Fig. 1 is a schematic structural diagram of a positioning and connecting device according to a first embodiment of the present invention.

FIG. 2 is a schematic view of the eccentric pin bushing structure of the positioning and connecting device of the present invention.

Fig. 3 is a schematic view of a threaded sleeve structure of the positioning and connecting device of the utility model.

Fig. 4 is a schematic structural diagram of a positioning and connecting device according to a second embodiment of the present invention.

In the figure: (1) positioning the bolt; (101) a non-threaded portion; (102) a threaded portion; (2) an eccentric pin bushing; (201) a positioning sleeve; (202) an adjusting sleeve; (3) a threaded sleeve; (301) an opening; (4) a hexagonal nut; (5) a first part; (6) a second part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.

The utility model provides a positioning and connecting device, which is used for connecting a first part 5 and a second part 6 and positioning the first part 5 relative to the second part 6, and is shown in figures 1 and 4, and the positioning and connecting device comprises a positioning bolt 1, an eccentric pin sleeve 2 and a threaded sleeve 3; the threaded sleeve 3 is provided with a threaded hole; the positioning bolt 1 comprises a bolt head and a screw rod, the screw rod comprises a non-thread part 101 and a thread part 102 matched with the thread hole, the non-thread part 101 is close to the bolt head and penetrates through the eccentric pin sleeve 2, and the thread part 102 is far away from the bolt head and is in threaded connection with the thread hole. As shown in fig. 2, the eccentric pin bushing 2 includes a positioning bushing 201 and an adjusting bushing 202 disposed in the positioning bushing 201, and an inner circle of the adjusting bushing 202 is not concentric with an outer circle of the positioning bushing 201.

First embodiment

As shown in fig. 1, the first component 5 is provided with a positioning hole, the second component 6 is provided with a pin hole and a bottom hole, when the device is used for assembling the first component 5 and the second component 6, the threaded sleeve 3 is firstly screwed into the bottom hole of the second component 6, the threaded sleeve 3 is also provided with an external thread, and when the second component 6 is made of a softer material such as plastic, the threaded sleeve 3 can be directly screwed into the bottom hole. As shown in fig. 3, an opening 301 may be provided at one end of the threaded sleeve 3 to perform a cutting function, and waste generated when screwing in the threaded sleeve 3 is guided out from the opening 301. When the second part 6 is made of hard materials such as metal, internal threads matched with the external threads of the thread bush 3 can be arranged on the bottom hole, so that the thread bush 3 can be conveniently screwed and fixed in the bottom hole. And then the eccentric pin bush 2 is installed in the pin hole, preferably, the eccentric pin bush 2 is arranged in the pin hole in an interference fit mode. Then aligning the positioning hole of the first part 5 and the pin hole of the second part 6, inserting the positioning bolt 1 into the positioning hole, so that the non-threaded part 101 is accommodated in the positioning hole and the adjusting sleeve 202, preferably, the non-threaded part 101 is accommodated in the positioning hole and the adjusting sleeve 202 in a transition fit manner; the screw portion 102 is screwed into the screw hole and screwed into the threaded sleeve 3, thereby fastening the first component 5 and the second component 6. The major diameter of the threaded portion 102 is smaller than or equal to the diameter of the non-threaded portion 101, so that the threaded portion 102 can smoothly pass through the positioning hole and the adjusting sleeve 202 and be screwed into the threaded hole. When the first part 5 and the second part 6 are assembled, if the mounting positions deviate, the measurement does not meet the precision requirement, the positioning bolt 1 can be detached, the eccentric pin sleeve 2 capable of offsetting the deviation amount is replaced, and the precision is adjusted by adjusting the eccentric amount of the eccentric pin sleeve 2.

The threaded hole and the threaded part 102 can be fastened in a snap fit manner within the maximum upper deviation range of the radius of the threaded hole, preferably, the maximum upper deviation of the radius of the threaded hole is 0.5mm, and when the assembly precision of the first part 5 and the second part 6 is less than 0.5mm, the position of the first part 5 relative to the second part 6 can be adjusted by using the eccentric pin bush 2, so that the maximum value of the adjustment amount of the eccentric pin bush 2 is not more than the maximum upper deviation of the radius of the threaded hole. For example, if the maximum upward deviation of the radius of the threaded hole is 0.5mm and the assembly accuracy of the first component 5 with respect to the second component 6 is 0.3mm, the maximum adjustment amount of the eccentric pin bush 2 is 0.5mm, and the position of the first component 5 with respect to the second component 6 can be adjusted using the eccentric pin bush 2.

Second embodiment

Unlike the first embodiment, as shown in fig. 4, the threaded sleeve 3 is a nut and is connected to the threaded portion 102, and preferably, the threaded sleeve 3 is a hexagonal nut 4. The diameter of the bottom hole is smaller than that of an outer circle of the hexagon nut 4, the positioning bolt 1 penetrates through the bottom hole, and the hexagon nut 4 is installed outside the bottom hole and connected with the thread portion 102 of the positioning bolt 1. The positioning bolt 1 can be deviated in the radial direction of the bottom hole, and the maximum deviation amount of the positioning bolt 1 in the radial direction of the bottom hole is at least the maximum adjustment amount of the eccentric pin sleeve 2. In the present embodiment, the assembly accuracy of the first component 5 and the second component 6 is not limited. For example, if the assembly accuracy of the first component 5 with respect to the second component 6 is 0.6mm, the maximum adjustment amount of the eccentric pin bushing 2 is at least 0.6mm, the maximum possible offset amount of the positioning bolt 1 in the radial direction of the bottom hole is at least 0.6mm, and when the position of the first component 5 with respect to the second component 6 is adjusted by using the eccentric pin bushing 2, the positioning bolt 1 is offset in the bottom hole along with the adjustment of the adjustment bushing 202, and at this time, there is still a space for installing the hexagon nut 4 outside the bottom hole. When the device is used for assembling the first part 5 and the second part 6, the positioning hole of the first part 5 and the pin hole of the second part 6 are firstly aligned, the positioning bolt 1 is inserted into the positioning hole, the non-threaded part 101 is accommodated in the positioning hole and the adjusting sleeve 202, the threaded part 102 extends out of the bottom hole, and the hexagonal nut 4 is screwed, so that the first part 5 and the second part 6 can be fastened.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A positioning connecting device is characterized by comprising a positioning bolt, an eccentric pin sleeve and a threaded sleeve; the threaded sleeve is provided with a threaded hole; the positioning bolt comprises a bolt head and a screw rod, the screw rod comprises a non-thread part and a thread part matched with the thread hole, the non-thread part is close to the bolt head and penetrates through the eccentric pin sleeve, and the thread part is far away from the bolt head and is in threaded connection with the thread hole.

2. The locating and connecting device of claim 1, wherein the eccentric pin sleeve comprises a locating sleeve and an adjusting sleeve arranged in the locating sleeve, an inner circle of the adjusting sleeve is not concentric with an outer circle of the locating sleeve, and the non-threaded portion is accommodated in the adjusting sleeve in a transition fit mode.

3. The locating connection of claim 1, wherein the threaded sleeve further comprises external threads.

4. The positioning and connection device according to claim 3, wherein an opening is provided at one end of the threaded sleeve for guiding out waste material.

5. The positioning and connecting device according to claim 1, wherein the threaded sleeve is a nut and is connected with the threaded portion.

6. The positioning and connecting device of claim 1, wherein the major diameter of the threaded portion is less than or equal to the diameter of the non-threaded portion.

7. The indexing attachment as claimed in claim 1, wherein the maximum amount of adjustment of the eccentric bushing is no greater than the maximum upper deviation of the radius of the threaded bore.

8. The locating connection in accordance with claim 1 or 7 wherein the maximum upper deviation of the radius of the threaded bore is 0.5 mm.

9. The locating connection in accordance with claim 8, wherein the maximum adjustment of the eccentric pin bushing is 0.5 mm.