CN213565795U - Limit power termination formula coiler - Google Patents

Abstract

The utility model discloses a limit for power termination formula coiler, including moving axis and dead axle, the up end of moving axis is equipped with the mounting groove, and the lower part of dead axle is equipped with threaded connection portion, and threaded connection portion passes through threaded connection with the nut, and during threaded connection portion and nut inserted the mounting groove, the mounting groove bottom was equipped with on the step face with the nut counterbalance, so that the elastic component of laminating mutually with threaded connection portion for the step face of orientation dead axle. The elastic piece exerts the acting force on the nut and pushes the nut to be tightly attached to the threaded connecting part. The thrust of elastic component can produce axial spacing to the nut, and the pressure between nut and the threaded connection portion can produce radially spacing to the nut, and frictional force between nut and the threaded connection portion produces radially and circumference spacing to the nut. Therefore, the nut can be prevented from being subjected to radial and axial float collision during vibration, and the noise of the force-limiting stopping type retractor is reduced.

Description

Limit power termination formula coiler

Technical Field

The utility model relates to a safety belt technical field, in particular to limit for strength termination formula coiler.

Background

With the increasing demand of customers for comfort in the automobile, the noise level in the automobile becomes an important index of automobile competitiveness. Through screw-thread fit between nut and the dead axle in the limit force termination formula coiler, and under the coiler initial condition, nut and dead axle are in a state of not screwing up each other, and there is the clearance between the screw thread of nut and dead axle promptly. When vehicle body vibration is transmitted to the force-limited stopping retractor, the collision between the nut and the dead axle generates noise, causing subjective discomfort to the occupant.

Therefore, how to eliminate the noise of the force-limited stopping retractor is a technical problem which needs to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a limit for strength termination formula coiler, it promotes the nut through the elastic component, makes its and threaded connection portion closely laminate, and then increases the frictional force between the two, reaches the purpose of noise reduction.

In order to achieve the above object, the utility model provides a limit for power termination formula coiler, including moving axis and dead axle, the up end of moving axis is equipped with the mounting groove, the lower part of dead axle is equipped with threaded connection portion, threaded connection portion passes through threaded connection with the nut, threaded connection portion with the nut inserts in the mounting groove, the mounting groove bottom is the orientation the step face of dead axle, be equipped with on the step face with the nut offsets, so that the nut with the elastic component that threaded connection portion laminated mutually.

Preferably, the elastic member is a vibration-proof ring, and the vibration-proof ring is provided with a supporting elastic sheet capable of abutting against the nut.

Preferably, the anti-vibration ring is provided with a U-shaped hole penetrating in the thickness direction, the supporting elastic sheet is formed on the inner side of the U-shaped hole, and one end of the supporting elastic sheet is suspended.

Preferably, a supporting protrusion is arranged at one end of the supporting elastic sheet suspension, which faces to the side surface of the nut.

Preferably, one end of the suspension of the supporting elastic sheet is tilted towards the side where the nut is located.

Preferably, the anti-vibration ring is provided with 3 supporting spring pieces, and the 3 supporting spring pieces are uniformly distributed along the circumferential direction of the supporting ring.

Preferably, the inner diameter of the support ring is greater than or equal to the outer diameter of the threaded connection.

Preferably, the outer circumference of the nut is hexagonal, the inner side of the mounting groove is hexagonal, the outer circumference of the anti-vibration ring is hexagonal, and the nut and the anti-vibration ring are in clearance fit with the mounting groove.

The utility model provides a limit for power termination formula coiler, including moving axis and dead axle, the up end of moving axis is equipped with the mounting groove, and the lower part of dead axle is equipped with threaded connection portion, and threaded connection portion passes through threaded connection with the nut, and during threaded connection portion and nut inserted the mounting groove, the mounting groove bottom was equipped with on the step face with the nut counterbalance, so that the elastic component that nut and threaded connection portion laminated mutually for the step face of orientation dead axle.

The elastic piece exerts the acting force on the nut and pushes the nut to be tightly attached to the threaded connecting part. The thrust of elastic component can produce axial spacing to the nut, and the pressure between nut and the threaded connection portion can produce radial spacing to the nut, and frictional force between nut and the threaded connection portion produces radial and circumferential spacing to the nut. Therefore, the nut can be prevented from being subjected to radial and axial float collision during vibration, and the noise of the force-limiting stopping type retractor is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is an axial cross-sectional view of a limited force final retractor provided by the present invention;

FIG. 2 is a cross-sectional view of the stationary shaft, the nut, and the anti-vibration ring of FIG. 1;

fig. 3 is a plan view of the anti-vibration ring;

fig. 4 is a side view of the anti-vibration ring.

Wherein the reference numerals in fig. 1 to 4 are:

the anti-vibration device comprises a fixed shaft 1, a nut 2, an anti-vibration ring 3, a movable shaft 4, a threaded connection part 11, a U-shaped hole 31, a supporting elastic sheet 32, a supporting protrusion 33 and a step surface 41.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 4, fig. 1 is a sectional view of a force-limited stopping retractor according to the present invention; FIG. 2 is a cross-sectional view of the stationary shaft, the nut, and the anti-vibration ring of FIG. 1; fig. 3 is a plan view of the anti-vibration ring; fig. 4 is a side view of the anti-vibration ring.

The utility model provides a limit force termination formula coiler, the structure is as shown in figure 1, including moving axis 4 and dead axle 1, dead axle 1 sets up the upper end at moving axis 4. Specifically, the up end of moving axis 4 is equipped with the mounting groove, and the lower part of dead axle 1 is equipped with threaded connection portion 11, and threaded connection portion 11's diameter is less than the internal diameter of mounting groove, and the diameter at dead axle 1 middle part is greater than the internal diameter of mounting groove. Threaded connection portion 11 passes through threaded connection with nut 2, and the periphery of nut 2 is the hexagon, and the inboard of mounting groove also is the hexagon, nut 2 and mounting groove clearance fit. The threaded connection part 11 and the nut 2 are connected and then inserted into the mounting groove, the middle of the fixed shaft 1 is matched with the upper end face of the fixed shaft 1, and the fixed shaft 1 and the movable shaft 4 can be connected in a mode according to the prior art. The depth of the mounting groove is greater than the length of the threaded connection part 11, and the bottom of the mounting groove is a step surface 41 facing upwards. Thus, when the threaded connection 11 and the nut 2 are inserted into the mounting groove, the nut 2 has a certain space for axial movement 1 in the mounting groove. In order to avoid noise generated by the impact on the threaded connection portion 11 in the mounting groove of the nut 2, an elastic member is arranged on the step surface 41, and the elastic member abuts against the nut 2, so that the nut 2 is attached to the threaded connection portion 11.

Alternatively, the elastic member is a vibration-proof ring 3, and as shown in fig. 3 and 4, the outer circumference of the vibration-proof ring 3 is substantially hexagonal and can be fitted with the mounting groove with a clearance. The vibration-proof ring 3 is provided with a support spring 32 which can be abutted against the nut 2, and the support spring 32 applies an upward thrust action to the nut 2 to make the nut fit with the threaded connection part 11.

Optionally, the anti-vibration ring 3 has a U-shaped hole 31 penetrating in the thickness direction, two sides of the U-shaped hole 31 extend substantially along the circumferential direction of the anti-vibration ring 3, and a supporting spring 32 is formed inside the U-shaped hole 31. One end of the supporting spring 32 is connected to the body of the anti-vibration ring 3 and the other end is suspended. The suspended end of the supporting spring 32 has elasticity, and the effect of reducing noise can be achieved by supporting the nut 2. In order to increase the supporting force, a supporting protrusion 33 may be disposed at the suspended end of the supporting spring 32 toward the side of the nut 2, and the supporting protrusion 33 abuts against the nut 2 to perform a supporting function. Of course, the user can also set the suspended end of the supporting spring 32 to tilt to the side where the nut 2 is located as required, and generate the supporting force through deformation.

Further, for guaranteeing that the supporting force that nut 2 receives is more even, antivibration ring 3 is equipped with 3 support shell fragment 32, 3 support shell fragment 32 along the circumference evenly distributed of support ring. As shown in fig. 3, 3 supporting spring plates 32 all extend along the counterclockwise direction, so as to ensure that the stress of the nut 2 is consistent. Of course, the user may also set more than 4 supporting elastic pieces 32 as required, which is not limited herein.

In this embodiment, the force-limited dead-end retractor supports the nut 2 by the anti-vibration ring 3. When moving axis 4 links to each other with dead axle 1, nut 2 can exert pressure to the protruding 33 of support on the antivibration ring 3, and the reaction force that the protruding 33 of support produced makes nut 2 and threaded connection portion 11 closely laminate, and then reaches and carries out spacing purpose to nut 2, avoids nut 2 and threaded connection portion 11 collision noise.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

It is right above that the utility model provides a limit force termination formula coiler has carried out the detailed description. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (8)

1. The utility model provides a limit for power termination formula coiler which characterized in that, includes moving axis (4) and dead axle (1), the up end of moving axis (4) is equipped with the mounting groove, the lower part of dead axle (1) is equipped with threaded connection portion (11), threaded connection portion (11) pass through threaded connection with nut (2), threaded connection portion (11) with nut (2) insert in the mounting groove, the mounting groove bottom is the orientation step face (41) of dead axle (1), be equipped with on step face (41) with nut (2) offset, so that nut (2) with the elastic component that threaded connection portion (11) laminated mutually.

2. The force-limited termination retractor according to claim 1 wherein the resilient member is a vibration-proof ring (3), the vibration-proof ring (3) being provided with a supporting spring (32) that can abut against the nut (2).

3. The force-limited termination retractor according to claim 2, wherein the anti-vibration ring (3) has a U-shaped hole (31) penetrating in the thickness direction, the supporting spring (32) is formed inside the U-shaped hole (31), and one end of the supporting spring (32) is suspended.

4. The force-limited termination retractor according to claim 3, wherein the end of the supporting spring (32) depending towards the side of the nut (2) is provided with a supporting protrusion (33).

5. The force-limited termination retractor according to claim 3, wherein one end of the suspension of the supporting spring (32) is tilted to a side where the nut (2) is located.

6. The force-limited termination retractor according to claim 2 wherein the anti-vibration ring (3) is provided with 3 supporting spring pieces (32), the 3 supporting spring pieces (32) being evenly distributed along a circumferential direction of the anti-vibration ring (3).

7. The force-limited termination retractor according to claim 2, wherein an inner diameter of the anti-vibration ring (3) is greater than or equal to an outer diameter of the threaded connection portion (11).

8. The force-limited termination retractor according to any one of claims 2 to 7 wherein the outer periphery of the nut (2) is hexagonal, the inner side of the mounting groove is also hexagonal, the outer periphery of the anti-vibration ring (3) is also hexagonal in profile, and the nut (2) and the anti-vibration ring (3) are both in clearance fit with the mounting groove.

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