CN219178423U

CN219178423U - Special-shaped nut boss position detection tool

Info

Publication number: CN219178423U
Application number: CN202223423225.7U
Authority: CN
Inventors: 张娜; 周维; 徐嘉辉
Original assignee: Zhoushan 7412 Fac
Current assignee: Zhoushan 7412 Fac
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-06-13
Anticipated expiration: 2032-12-20

Abstract

The utility model discloses a special-shaped nut boss position detection tool which comprises a handle shaft, a threaded core rod, a lantern ring and a circular ring, wherein the handle shaft comprises a handle part and a connecting shaft, one end of the connecting shaft is fixedly connected with the handle part, the other end of the connecting shaft is detachably connected with one end of the threaded core rod, the lantern ring is sleeved on the outer side of the connecting shaft and can slide along the axial direction of the connecting shaft, the circular ring is positioned on the outer side of the lantern ring and is rotationally connected with the lantern ring, and at least two measuring grooves are formed in the end face of the circular ring, facing the threaded core rod; the device has the advantages of being high in detection efficiency, and being capable of accurately confirming whether the distance L between the boss and the center of the nut body meets the requirement.

Description

Special-shaped nut boss position detection tool

Technical Field

The utility model belongs to the technical field of measuring tools, and particularly relates to a special-shaped nut boss position detection tool.

Background

Nuts and bolts are commonly used fasteners, but in some special applications, special types of nuts are required to meet the assembly requirements, for which a special-shaped nut (safety belt mounting nut) has been developed, and as shown in fig. 1 to 3, the special-shaped nut 1 includes a nut body 11, a flange portion 12 and a rod portion 13 are integrally provided on the outer peripheral surface of the nut body 11, one end of the rod portion 13 is fixedly connected with the flange portion 12, the other end of the rod portion 13 is flush with one end surface of the nut body 11, and a boss 14 is integrally provided on the other end of the rod portion 13.

In order to ensure that the special-shaped nut can be normally used, the height H and the width D of the boss and the distance L between the boss and the center of the nut body are required to be detected before the special-shaped nut leaves a factory. Conventionally, the height H and the width D of the boss can be measured through a caliper, the distance L between the boss and the center of the nut body is detected by using a projector, the projector firstly obtains a top view of the special-shaped nut, then calculates the distance between the special-shaped nut and the minor diameter of the thread of the nut body, and then converts the distance L between the boss and the center of the nut body. The detection mode is low in detection efficiency, the distance L between the boss and the center of the nut body cannot be directly obtained, a large error exists, and the distance L between the boss and the center of the nut body is difficult to strictly manage and control.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide the special-shaped nut boss position detection tool, which has higher detection efficiency and can accurately confirm whether the distance L between the boss and the center of the nut body meets the requirement.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a dysmorphism nut boss position detection frock, includes handle axle, screw thread plug, lantern ring and ring, the handle axle include stalk portion and connecting axle, the one end of connecting axle with stalk portion fixed connection, the other end of connecting axle with screw thread plug's one end can dismantle the connection, the lantern ring cover be in the outside of connecting axle and can follow the axial slip of connecting axle, the ring be located the outside of lantern ring and with the lantern ring rotate and be connected, the ring orientation screw thread plug's terminal surface on be provided with two at least measuring grooves.

Preferably, a spline is fixedly arranged at the other end of the connecting shaft, a key groove is formed at one end of the threaded core rod, and the spline is inserted into the key groove.

Preferably, the spline comprises a cylinder, a plurality of bar grooves distributed at equal intervals along the circumferential direction are formed in the side face of the cylinder, the bar grooves extend along the axial direction of the cylinder and penetrate through two end faces of the cylinder, and a plurality of lugs matched with the bar grooves are arranged on the inner wall of the key groove.

Preferably, at least one guide rail is arranged on the side surface of the connecting shaft, the guide rail extends along the axial direction of the connecting shaft, sliding grooves with the same number as the guide rails are formed in the inner ring of the lantern ring, the sliding grooves correspond to the guide rails one by one, and the sliding grooves are in sliding fit with the corresponding guide rails.

Preferably, the number of the guide rails is four, and the four guide rails are distributed at equal intervals along the circumferential direction.

Preferably, a plurality of balls are arranged between the inner ring of the circular ring and the outer ring of the lantern ring.

Preferably, four measuring grooves are provided, and the four measuring grooves are distributed along the circumferential direction.

Preferably, the end surface of the ring far away from the threaded core rod is provided with marks with the same number as the measuring grooves, and the marks are in one-to-one correspondence with the measuring grooves.

Compared with the prior art, the utility model has the advantages that the depth and the width of the measuring groove and the distance between the measuring groove and the threaded core rod are prefabricated according to the actually required boss height H, boss width D and distance L between the boss and the center of the nut body, the threaded core rod is in threaded connection with the special-shaped nut to be detected during detection, at the moment, the central axis of the threaded core rod and the central axis of the nut body are positioned on the same straight line, then the lantern ring and the circular ring are slid, if the measuring groove can completely cover the boss, the size of the boss is judged to meet the requirement, namely, whether the boss height H, boss width D and boss and the center of the nut body are met or not can be confirmed at one time, the detection efficiency is higher, and the accuracy is better.

Drawings

FIG. 1 is a schematic view of a profile nut;

FIG. 2 is a top view of the profiled nut;

FIG. 3 is a side view of a profiled nut;

FIG. 4 is a schematic diagram of the structure of the present utility model;

FIG. 5 is a schematic diagram of an exploded construction of the present utility model;

FIG. 6 is a schematic view of the collar and ring structure of the present utility model;

FIG. 7 is a schematic cross-sectional view of a nut according to the present utility model

Fig. 8 is a schematic structural view of the present utility model with a shaped nut.

In the figure: 1. a special-shaped nut; 11. a nut body; 12. a flange portion; 13. a stem portion; 14. a boss; 2. a handle shaft; 21. a handle; 22. a connecting shaft; 23. a spline; 231. a column; 232. a bar-shaped groove; 24. a guide rail; 3. a threaded core rod; 31. a key slot; 32. a bump; 4. a collar; 41. a chute; 5. a circular ring; 51. a measuring tank; 6. and (3) rolling balls.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

Embodiment one: as shown in fig. 4 to 6, a special-shaped nut boss position detection tool comprises a handle shaft 2, a threaded core rod 3, a lantern ring 4 and a circular ring 5, wherein the handle shaft 2 comprises a handle part 21 and a connecting shaft 22, one end of the connecting shaft 22 is fixedly connected with the handle part 21, the other end of the connecting shaft 22 is detachably connected with one end of the threaded core rod 3, the lantern ring 4 is sleeved on the outer side of the connecting shaft 22 and can slide along the axial direction of the connecting shaft 22, the circular ring 5 is positioned on the outer side of the lantern ring 4 and is rotationally connected with the lantern ring 4, and at least two measuring grooves 51 are formed in the end face of the circular ring 5, facing the threaded core rod 3.

Because of the tolerance of the shaped nuts 1 (see fig. 1) during the production process, there may be a slight deviation in the position of the center of the threaded hole of each shaped nut 1, but it is inaccurate to calculate only the distance between the boss 14 (see fig. 2) and the minor diameter of the thread of the nut body 11 (see fig. 2) by a conventional projector and to add a constant value to the distance L between the boss 14 and the center of the nut body 11. According to the technical scheme, when the threaded core rod 3 is in threaded connection with the special-shaped nut 1 to be detected, the central axis of the threaded core rod 3 is overlapped with the central axis of the nut body 11, and then whether the distance L between the boss 14 and the central axis of the nut body 11 meets the requirement is accurately confirmed according to the distance between the measuring groove 51 and the threaded core rod 3.

Embodiment two: as shown in fig. 5 to 7, the rest is the same as the first embodiment except that the other end of the connecting shaft 22 is fixedly provided with a spline 23, one end of the threaded mandrel 3 is provided with a key slot 31, and the spline 23 is inserted into the key slot 31. Further, the spline 23 comprises a column 231, a plurality of bar-shaped grooves 232 distributed at equal intervals along the circumferential direction are formed in the side face of the column 231, the bar-shaped grooves 232 extend along the axial direction of the column and penetrate through two end faces of the column 231, a plurality of protrusions 32 matched with the bar-shaped grooves are formed in the inner wall of the key groove 31, when the spline 23 is inserted into the key groove 31 and rotates for a certain angle, the bar-shaped grooves 232 interfere with the protrusions 32 to generate resistance, and the resistance can prevent the spline 23 from reversely extending out of the key groove 31, so that the connecting shaft 22 and the threaded mandrel 3 are ensured to be stably connected.

In this embodiment, at least one guide rail 24 is disposed on a side surface of the connecting shaft 22, the guide rail 24 extends along an axial direction of the connecting shaft 22, and sliding grooves 41 with the same number as the guide rails 24 are formed in an inner ring of the collar 4, the sliding grooves 41 are in one-to-one correspondence with the guide rails 24, and the sliding grooves 41 are in sliding fit with the corresponding guide rails 24. Further, four guide rails 24 are provided, and the four guide rails 24 are equally spaced in the circumferential direction.

In this embodiment, a plurality of balls 6 are disposed between the inner ring of the ring 5 and the outer ring of the collar 4, and when the ring 5 rotates around the shaft relative to the collar 4, the balls 6 roll, which is helpful to reduce the friction between the two, and the rotation is more labor-saving. The ring 5, collar 4 and balls 6 are similar in composition to conventional rolling bearing arrangements on the market.

Embodiment III: as shown in fig. 5 and 6, the rest is the same as the first embodiment except that four measuring grooves 51 are provided and the four measuring grooves 51 are distributed in the circumferential direction, and the depth and width of the four measuring grooves 51 and the distance between the measuring grooves 51 and the threaded core rod 3 are prefabricated according to actual needs so as to be suitable for the different-sized shaped nuts 1.

In this embodiment, the end surface of the ring 5 far from the threaded mandrel 3 is provided with the marks (not shown) with the same number as the measuring grooves 51, the marks are in one-to-one correspondence with the measuring grooves 51, and each mark is different, such as 1234 or VWXY, so as to quickly find the measuring groove 51 corresponding to the profiled nut 1 to be detected during detection.

The outline working process of the special-shaped nut boss position detection tool disclosed in the above embodiment is as follows: referring to fig. 8, the threaded mandrel 3 is first screwed with the profiled nut 1 to be detected, then the collar 4 and the ring 5 are slid to cover the measuring groove 51 corresponding to the profiled nut 1 to be detected on the boss 14, if the measuring groove 51 can cover the boss 14 completely, the end face of the ring 5 is attached to the end face of the profiled nut 1, the size of the boss 14 is determined to be satisfactory, and if the measuring groove 51 cannot cover the boss 14 or cannot cover the boss 14 completely (a gap is left between the ring 5 and the end face of the profiled nut 1), the size of the boss 14 is determined to be unsatisfactory.

Claims

1. The utility model provides a dysmorphism nut boss position detection frock, its characterized in that includes handle axle, screw thread plug, lantern ring and ring, the handle axle include stalk portion and connecting axle, the one end of connecting axle with stalk portion fixed connection, the other end of connecting axle with screw thread plug's one end can dismantle and be connected, the lantern ring cover be in the outside of connecting axle and can follow the axial slip of connecting axle, the ring be located the outside of lantern ring and with the lantern ring rotate and be connected, the ring orientation screw thread plug's terminal surface on be provided with two at least measuring grooves.

2. The special-shaped nut boss position detection tool according to claim 1, wherein a spline is fixedly arranged at the other end of the connecting shaft, a key groove is formed in one end of the threaded core rod, and the spline is inserted into the key groove.

3. The special-shaped nut boss position detection tool according to claim 2, wherein the spline comprises a cylinder, a plurality of bar grooves distributed at equal intervals along the circumferential direction are formed in the side surface of the cylinder, the bar grooves extend along the axial direction of the cylinder and penetrate through two end surfaces of the cylinder, and a plurality of lugs matched with the bar grooves are arranged on the inner wall of the key groove.

4. The special-shaped nut boss position detection tool as claimed in claim 1, wherein at least one guide rail is arranged on the side surface of the connecting shaft, the guide rail extends along the axial direction of the connecting shaft, sliding grooves with the same number as the guide rails are formed in the inner ring of the sleeve ring, the sliding grooves correspond to the guide rails one by one, and the sliding grooves are in sliding fit with the corresponding guide rails.

5. The special-shaped nut boss position detection tool according to claim 4, wherein four guide rails are arranged and distributed at equal intervals along the circumferential direction.

6. The tool for detecting the boss position of the special-shaped nut according to claim 1, 4 or 5, wherein a plurality of balls are arranged between the inner ring of the circular ring and the outer ring of the lantern ring.

7. The special-shaped nut boss position detection tool according to claim 1, wherein four measuring grooves are formed, and the four measuring grooves are distributed along the circumferential direction.

8. The special-shaped nut boss position detection tool according to claim 1 or 7, wherein the end face of the ring, which is far away from the threaded core rod, is provided with marks with the same number as the measuring grooves, and the marks are in one-to-one correspondence with the measuring grooves.