CN219103984U

CN219103984U - Locking cam axiality detection device

Info

Publication number: CN219103984U
Application number: CN202223552107.6U
Authority: CN
Inventors: 巫业栋; 刘岳; 李建
Original assignee: Hefei Bolin Advanced Materials Co ltd
Current assignee: Hefei Bolin Advanced Materials Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-30
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a locking cam coaxiality detection device which comprises a base and an end cover, wherein the base and the end cover are of cylindrical structures, one end of the base is provided with a plurality of positioning pins, a plurality of positioning holes matched with the positioning pins are formed in corresponding positions on the end cover, a first axle center hole is formed in the middle of the base, a first counter bore which is coaxially arranged is formed in the bottom of the first axle center hole, a second axle center hole is formed in the middle of the end cover, a second counter bore which is coaxially arranged is formed in the bottom of the second axle center hole, and the first axle center hole and the second axle center hole are coaxially arranged.

Description

Locking cam axiality detection device

Technical Field

The utility model relates to the technical field of locking cam detection equipment, in particular to a locking cam coaxiality detection device.

Background

The locking cam part is used in an automobile safety belt, needs to be meshed with a locking plate during assembly, is then installed into a U-shaped framework of a safety belt lock catch together and is used for pre-tightening or unlocking a safety belt lock tongue, and the production mode is die casting molding.

In the production process, the die inevitably loses, so that the quality of the die-cast locking cam product at the later stage of the service life of the die can be problematic, and the coaxiality is qualified. If the base in the middle of the locking cam part is not coaxial with the mandrel on the side, slipping of the lock tongue can occur during pre-tightening, so that serious potential safety hazards are caused; if the mandrels on the two sides of the locking cam are not coaxial, normal assembly between the locking cam and the U-shaped framework can be affected.

Disclosure of Invention

The utility model aims to provide a locking cam coaxiality detection device which is used for solving the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a locking cam axiality detection device, includes base, end cover, base, end cover are cylindrical structure, base one end is equipped with a plurality of locating pins, correspond the position on the end cover and be equipped with a plurality of locating holes with locating pin complex, the base middle part is equipped with first axle center hole, first axle center hole bottom is equipped with the first counter bore of coaxial arrangement, the end cover middle part is equipped with the second axle center hole, second axle center hole bottom is equipped with the second counter bore of coaxial arrangement, first axle center hole, second axle center hole coaxial arrangement.

As a further scheme of the utility model: the locating pins are located on the outer side of the first axial center hole, the locating holes are located on the outer side of the second axial center hole, and the two locating pins and the two locating holes are arranged correspondingly.

As a further scheme of the utility model: the locating pins and the locating holes are axially and uniformly arranged.

As a further scheme of the utility model: the inner diameters of the first axial hole and the second axial hole are the same as the outer diameter of the base of the locking cam.

As a further scheme of the utility model: the inner diameters of the first counter bore and the second counter bore are the same as the outer diameter of the mandrel of the locking cam.

As a further scheme of the utility model: and chamfer angles are arranged at the end parts of the first axial center hole, the first counter bore, the second axial center hole and the second counter bore.

As a further scheme of the utility model: and the surface roughness of the locating pin, the first axial hole, the first counter bore, the locating hole, the second axial hole and the second counter bore is not higher than Ra0.8.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the detection device, the base and the end cover are arranged, the axle center hole and the counter bore are formed in the base and the end cover, the coaxiality of the core shaft of the locking cam and the coaxiality of the core shaft and the base can be detected rapidly, the outer diameter of the base can be detected, the detection device is simple in structure and convenient to use, the locking cam can be detected rapidly, and the detection efficiency is improved;

2. the detection device of the application is integrally of a cylindrical structure, convenient to process and low in production and use cost.

Drawings

FIG. 1 is a schematic view of the usage state of the present embodiment;

FIG. 2 is a schematic view of the base structure of the present embodiment;

FIG. 3 is a schematic diagram of the end cap structure of the present embodiment;

in the figure: 1-base, 11-locating pin, 12-first axle center hole, 13-first counter bore, 2-end cover, 21-locating hole, 22-second axle center hole, 23-second counter bore, 3-locking cam, 31-base, 32-dabber bottom, 33-dabber top.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, in an embodiment of the utility model, a lock cam coaxiality detection device includes a base 1 and an end cover 2, wherein the base 1 and the end cover 2 are both in a cylindrical structure, one end of the base 1 is provided with a plurality of positioning pins 11, a plurality of positioning holes 21 matched with the positioning pins 11 are arranged at corresponding positions on the end cover 2, a first axial hole 12 is arranged in the middle of the base 1, a first counter bore 13 coaxially arranged at the bottom of the first axial hole 12 is arranged at the bottom of the first axial hole 12, a second axial hole 22 is arranged in the middle of the end cover 2, a second counter bore 23 coaxially arranged at the bottom of the second axial hole 22, the first axial hole 12 and the second axial hole 22 are coaxially arranged, the positioning pins 11 are positioned at the outer sides of the first axial hole 12, the positioning holes 21 are positioned at the outer sides of the second axial hole 22, the positioning pins 11 and the positioning holes 21 are correspondingly arranged, and the positioning pins 11 and the positioning holes 21 are uniformly arranged in an axial direction.

In addition, the inner diameters of the first axle center hole 12 and the second axle center hole 22 are the same as the outer diameter of the base of the locking cam, the tolerance is 0.05mm, the inner diameters of the first counter bore 13 and the second counter bore 23 are the same as the outer diameter of the core shaft of the locking cam, the tolerance is 0.05mm, chamfer angles are arranged at the end parts of the first axle center hole 12, the first counter bore 13, the second axle center hole 22 and the second counter bore 23, and the surface roughness of the positioning pin 11, the first axle center hole 12, the first counter bore 13, the positioning hole 21, the second axle center hole 22 and the second counter bore 23 is not higher than Ra0.8.

When the utility model is used, firstly, the locking cam 3 is inserted into the base 1, namely, when the base 31 of the locking cam 3 is inserted into the first axial hole 12 and the mandrel bottom end 32 is inserted into the first counterbore 13, if the mandrel bottom end 32 cannot be inserted into the first counterbore 13, the mandrel bottom end 32 and the base 31 are in a different coaxial state, if the mandrel bottom end 32 is inserted into the first counterbore 13, a larger gap exists between the base 31 and the first axial hole 12 or the outer diameter of the base 31 is insufficient, when the two conditions are generated, the locking cam 3 is a poor product, if the base 31 is inserted into the first axial hole 12 and the mandrel bottom end 32 is inserted into the first counterbore 13 normally, then the end cover 2 is covered at the other end of the locking cam 3, and the positioning pin 11 is inserted into the positioning hole 21, in the same way, the coaxiality of the base 31 and the outer diameter of the mandrel top end 33 can be judged, and in addition, if the mandrel top end 33 cannot be inserted into the second counterbore 23, the situation that the coaxiality is different can possibly occur, therefore, the base 1 and the base 31 and the mandrel bottom end cover are in a range of coaxiality, and the base 31 are required to be in the whole, and the outer diameter of the base 1 and the end cover 31 are convenient to be machined, and the end cover is in a range of the base 1, and the outer diameter of the base 31, and the end cover is convenient to have a whole structure.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a locking cam axiality detection device, its characterized in that, including base (1), end cover (2), base (1), end cover (2) are cylindrical structure, base (1) one end is equipped with a plurality of locating pins (11), correspond the position on end cover (2) be equipped with a plurality of with locating pin (11) complex locating hole (21), base (1) middle part is equipped with first axle center hole (12), first axle center hole (12) bottom is equipped with first counter bore (13) of coaxial arrangement, end cover (2) middle part is equipped with second axle center hole (22), second axle center hole (22) bottom is equipped with second counter bore (23) of coaxial arrangement, first axle center hole (12), second axle center hole (22) coaxial arrangement.

2. The lock-up cam coaxiality detection device according to claim 1, wherein the positioning pin (11) is located on the outer side of the first axial hole (12), the positioning hole (21) is located on the outer side of the second axial hole (22), and the positioning pin (11) and the positioning hole (21) are respectively provided with two and are correspondingly arranged.

3. The lock cam coaxiality detection device according to claim 1, wherein the positioning pins (11) and the positioning holes (21) are uniformly arranged in the axial direction.

4. The lock cam coaxiality detection device according to claim 1, wherein the inner diameters of the first axial hole (12) and the second axial hole (22) are the same as the outer diameter of the base of the lock cam.

5. The locking cam coaxiality detection device according to claim 1, wherein the inner diameters of the first counter bore (13) and the second counter bore (23) are the same as the outer diameter of a mandrel of the locking cam.

6. The lock-up cam coaxiality detection device according to claim 1, wherein the ends of the first axial hole (12), the first counter bore (13), the second axial hole (22) and the second counter bore (23) are respectively provided with a chamfer.

7. The lock-up cam coaxiality detection device according to claim 1, wherein the surface roughness of the positioning pin (11), the first axial hole (12), the first counter bore (13), the positioning hole (21), the second axial hole (22) and the second counter bore (23) is not higher than ra0.8.