CN218542919U

CN218542919U - Rotating shaft with ratchet wheel

Info

Publication number: CN218542919U
Application number: CN202223316844.6U
Authority: CN
Inventors: 王响山
Original assignee: Dongguan Xuanda Precision Metal Technology Co ltd
Current assignee: Dongguan Xuanda Precision Metal Technology Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-02-28
Anticipated expiration: 2032-12-12

Abstract

A spindle having a ratchet, comprising: a rotating member, a rotating assembly and a ratchet wheel, the rotating assembly comprising: axle center, the one end and the rotating member of axle center form fixed connection, and the ratchet includes: sleeve, a plurality of optical axis and a plurality of shell fragment, during the other end in axle center inserted the sleeve, the sleeve had a plurality of holding tank, and the holding tank is located the week side in axle center, and the holding tank has paraxial side and distal axis side, and the paraxial side is closer to the axle center than the distal axis side, thereby the both ends of shell fragment apply the effort towards the paraxial side to the optical axis with distal axis side and optical axis butt respectively, when the optical axis was located the paraxial side, the optical axis formed interference fit with the axle center. The rotating shaft not only can realize the effect of unidirectional rotation, but also has compact structure, can meet the requirement of miniaturization, is not easy to damage and has long service life.

Description

Rotating shaft with ratchet wheel

Technical Field

The utility model relates to a pivot especially relates to a pivot with ratchet.

Background

The pivot mainly used realizes the rotatory activity of spare part, and some spare parts need realize unidirectional rotation, then can set up the ratchet in the pivot, for example the anti-disengaging pivot structure that is used for car back row handrail pivoted that chinese utility model patent CN213831449U discloses, this pivot structure is provided with ratchet claw and ratchet, through the cooperation of ratchet claw and ratchet to realize the unidirectional rotation of handrail.

However, the above-mentioned way of engaging the ratchet pawl with the ratchet wheel needs to dispose the ratchet pawl on one side of the armrest, thereby occupying extra space and being not beneficial to the miniaturization of the rotating shaft structure. In addition, when the armrest is subjected to an external force which breaks through the locking of the ratchet wheel, the ratchet claw can be separated from the ratchet wheel, or the ratchet wheel can be damaged.

SUMMERY OF THE UTILITY MODEL

The utility model discloses technical scheme is to above-mentioned condition, provides a pivot with ratchet in order to solve above-mentioned problem, the pivot includes: a rotation member, a rotation assembly and a ratchet wheel, the rotation assembly comprising: axle center, the one end and the rotating member of axle center form fixed connection, the ratchet includes: sleeve, a plurality of optical axis and a plurality of shell fragment, the other end in axle center inserts in the sleeve, the sleeve has a plurality of holding tank, the holding tank is located the week side in axle center, the holding tank has paraxial side and distal axis side, the paraxial side is closer to the axle center than the distal axis side, thereby the both ends of shell fragment apply the effort towards the paraxial side to the optical axis with distal axis side and optical axis butt respectively, work as when the optical axis is located the paraxial side, the optical axis forms interference fit with the axle center.

Furthermore, holding tank, optical axis and shell fragment all are a plurality ofly and quantity equals, and a plurality of holding tanks encircle the axle center and are 360 circumferential array's mode range.

Further, the optical axis has a driving section and a driven section, the diameter of the driven section is greater than the diameter of the driving section, the rotating assembly further includes: the driving section penetrates through the bracket and forms interference fit with the bracket, and the bracket and the rotating piece form fixed connection.

Further, the support has bolt and axle sleeve, the bolt forms fixed connection with the rotating member, the axle sleeve forms interference fit with the initiative section.

Further, the rotating assembly further comprises: a baffle, the driving section passes through the baffle and forms an interference fit with the baffle, and the bracket is closer to the driven section than the baffle.

Further, the sleeve includes: the wheel sleeve comprises a wheel sleeve body, a first sleeve seal and a second sleeve seal, wherein the accommodating groove is formed in the wheel sleeve body, and the first sleeve seal and the second sleeve seal are fixedly connected with two ends of the wheel sleeve body respectively and cover two ports of the accommodating groove respectively.

After the technical scheme is adopted, the beneficial effects of the utility model are that: the rotating shaft not only can realize the effect of unidirectional rotation, but also has compact structure, can meet the requirement of miniaturization, is not easy to damage and has long service life.

Drawings

Fig. 1 is a schematic view of a rotating shaft according to the present invention;

fig. 2 is a schematic view of a rotating assembly according to the present invention;

fig. 3 is an internal view of the ratchet according to the present invention.

Detailed Description

The technical solution of the present invention is further described below by way of examples:

the utility model provides a pivot with ratchet, it is shown in combination figure 1 to 3, the pivot includes: a rotating member 1, a rotating assembly 2 and a ratchet 3, the rotating assembly 2 comprises: axle center 21, axle center 21's one end forms fixed connection with rotating member 1, and ratchet 3 includes: the optical axis measuring device comprises a sleeve 31, a plurality of optical axes 32 and a plurality of elastic sheets 33, wherein the other end of an axis 21 is inserted into the sleeve 31, the sleeve 31 is provided with a plurality of accommodating grooves 310, the accommodating grooves 310 are positioned on the periphery side of the axis 21, the accommodating grooves 310 are provided with a near-axis side 310a and a far-axis side 310b, the near-axis side 310a is closer to the axis 21 than the far-axis side 310b, the two ends of the elastic sheets 33 are respectively abutted with the far-axis side 310b and the optical axes 32 so as to apply an acting force towards the near-axis side 310a to the optical axes 32, and when the optical axes 32 are positioned on the near-axis side 310a, the optical axes 32 form an interference fit with the axis 21.

When the rotating shaft is used, the rotating member 1 is mounted on a part needing to rotate, such as: the armrest of the car, and then the ratchet 3 is mounted on the base, such as: provided is a handrail seat of an automobile. As shown in fig. 3, when an acting force in the direction of the arc arrow S is applied to the rotating member 1, the shaft center 21 can rotate in the direction of the arc arrow S relative to the ratchet 3, so as to rotate the component relative to the base, in the process, since the optical axis 32 resists the acting force of the elastic piece 33 and moves from the proximal side 310a to the distal side 310b and gradually moves away from the shaft center 21, the acting force (i.e. friction) between the optical axis 32 and the shaft center 21 is gradually reduced, so that the rotation of the shaft center 21 is not prevented; when an acting force in the opposite direction of the arc arrow S is applied to the rotating member 1, the optical axis 32 forms an interference fit with the shaft center 21, and the friction force between the optical axis 32 and the shaft center 21 prevents the relative rotation of the shaft center 21, thereby achieving the "locking" effect.

The ratchet wheel 3 of the rotating shaft is integrally arranged on the shaft center 21, so that other spaces of parts are not occupied, and the requirement of miniaturization is favorably met.

Since the ratchet wheel 3 of the rotating shaft limits the reverse rotation of the shaft center 21 by friction force, the ratchet wheel 3 will not be damaged even if the shaft center 21 breaks through the limit of the ratchet wheel 3 due to excessive action.

Specifically, the accommodating grooves 310, the optical axis 32 and the elastic sheets 33 are all provided in a plurality and equal number, and the plurality of accommodating grooves 310 are arranged in a 360 ° circumferential array around the shaft center 21. By arranging the plurality of accommodating grooves 310 arranged in the circumferential array manner and the optical axis 32 therein, the friction force applied to the axis 21 can be increased, thereby enhancing the 'locking' effect.

Specifically, with continued reference to fig. 2, the optical axis 21 has a driving section 211 and a driven section 212, the diameter of the driven section 212 is larger than that of the driving section 211, and the rotating assembly 2 further includes: the bracket 22, the driving section 211 passes through the bracket 22 and forms an interference fit with the bracket 22, and the bracket 22 forms a fixed connection with the rotating member 1. When the rotary member 1 rotates, the shaft center 21 is rotated by the holder 22.

More specifically, the bracket 22 has a pin 221 and a bushing 222, the pin 221 forms a fixed connection with the rotating member 1, and the bushing 222 forms an interference fit with the active section 211.

More specifically, the rotating assembly 2 further comprises: the baffle 23, the driving section 211 passes through the baffle 23 and forms an interference fit with the baffle 23, and the bracket 22 is closer to the driven section 212 than the baffle 23. The possibility of the shaft center 21 being detached from the holder 22 can be reduced by providing the stopper piece 23.

Specifically, with continued reference to fig. 1, the sleeve 31 includes: the wheel sleeve 311, the first sleeve 312 and the second sleeve 313, the receiving groove 310 is disposed in the wheel sleeve 311, and the first sleeve 312 and the second sleeve 313 are respectively fixedly connected with two ends of the wheel sleeve 311 and respectively cover two ports of the receiving groove 310.

Claims

1. A rotating shaft with a ratchet wheel is characterized in that: the pivot includes: a rotating member, a rotating assembly and a ratchet, the rotating assembly comprising: axle center, the one end and the rotating member of axle center form fixed connection, the ratchet includes: sleeve, a plurality of optical axis and a plurality of shell fragment, the other end in axle center inserts in the sleeve, the sleeve has a plurality of holding tank, the holding tank is located the week side in axle center, the holding tank has paraxial side and distal axis side, the paraxial side is closer to the axle center than the distal axis side, thereby the both ends of shell fragment apply the effort towards the paraxial side to the optical axis with distal axis side and optical axis butt respectively, work as when the optical axis is located the paraxial side, the optical axis forms interference fit with the axle center.

2. A spindle having a ratchet wheel according to claim 1, wherein: the holding tank, optical axis and shell fragment all are a plurality ofly and quantity equals, and a plurality of holding tanks encircle the axle center and are 360 circumference shape array's mode range.

3. A spindle having a ratchet wheel according to claim 1, wherein: the optical axis has a driving section and a driven section, the diameter of the driven section is greater than the diameter of the driving section, the rotating assembly further comprises: the driving section penetrates through the bracket and forms interference fit with the bracket, and the bracket and the rotating piece form fixed connection.

4. A spindle having a ratchet wheel according to claim 3, wherein: the support has bolt and axle sleeve, the bolt forms fixed connection with the rotating member, the axle sleeve forms interference fit with the initiative section.

5. A spindle having a ratchet as claimed in claim 3, wherein: the rotating assembly further comprises: a baffle, the driving section passes through the baffle and forms an interference fit with the baffle, and the bracket is closer to the driven section than the baffle.

6. A spindle having a ratchet as claimed in claim 1, wherein: the sleeve includes: the wheel sleeve comprises a wheel sleeve body, a first sleeve seal and a second sleeve seal, wherein the accommodating groove is formed in the wheel sleeve body, and the first sleeve seal and the second sleeve seal are fixedly connected with two ends of the wheel sleeve body respectively and cover two ports of the accommodating groove respectively.