CN211202601U

CN211202601U - Rotary locking mechanism capable of being locked at any position

Info

Publication number: CN211202601U
Application number: CN201921834034.5U
Authority: CN
Inventors: 赵凤云; 李鹏; 任文静; 陈利; 王希阁
Original assignee: Dongfeng Off Road Vehicle Co Ltd
Current assignee: Dongfeng Off Road Vehicle Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-08-07
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses a but rotation locking mechanism of optional position locking, including the fixed axle that sets up on the fixing base, fixed axle and dwang normal running fit, its characterized in that: the dwang is equipped with the dwang inner chamber, it has stop gear to rotate intracavity sliding connection, stop gear and the spacing cooperation of locking round pin axle, the locking round pin axle radially respectively with the fixed axle with the inner wall butt of dwang. The utility model is respectively abutted against the fixed shaft and the inner wall of the rotating rod in the radial direction through the locking pin shaft, and the rotating rod is locked through the static friction force existing between the locking pin shaft and the fixed shaft; when the push-pull rod is pulled, the limit of the locking pin shaft is released, and the rotating rod can rotate relative to the fixed shaft.

Description

Rotary locking mechanism capable of being locked at any position

Technical Field

The utility model relates to a locking mechanism belongs to automobile parts technical field, specifically indicates a rotation locking mechanism of optional position locking.

Background

In some parts rotating around the rotating shaft, it is desirable that they can be reliably locked at any position, for example, various door covers and the like need to be locked at different opening degrees; an upwardly opening and closing door cover or the like needs to be locked at an arbitrary position such as downward for preventing gravity. The general rotating shaft locking structure is characterized in that a gear is coaxially connected to a rotating shaft, a telescopic clamping block is arranged on a fixed shell, and locking is achieved through limiting of the clamping block and a gear groove.

Chinese patent CN110015340 discloses a locking mechanism of an actuator, which can realize locking by a mechanical method, but the mechanism is complex and has high cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects existing in the prior art and providing a rotating locking mechanism which can realize the locking at any position and has simple structure and simple and convenient operation.

In order to achieve the above object, the utility model provides a but rotation locking mechanism of optional position locking, including the fixed axle that sets up on the fixing base, fixed axle and dwang normal running fit, its characterized in that: the dwang is equipped with the dwang inner chamber, sliding connection has stop gear in the dwang inner chamber, stop gear and the spacing cooperation of locking round pin axle, the locking round pin axle radially respectively with the fixed axle with the inner wall butt of dwang.

Furthermore, the limiting mechanism comprises a push-pull rod, the push-pull rod is sleeved with a spring, and the other end of the spring is fixedly connected with the inner wall of the rotating rod.

Furthermore, one end of the push-pull rod is fixedly connected with a U-shaped plate, the fixed shaft is located in a groove of the U-shaped plate, the upper end face and the lower end face of the U-shaped plate are respectively provided with a limiting hole with the width smaller than the diameter of the locking pin shaft, and the limiting hole is in limiting fit with the locking pin shaft.

Further, the dwang is by be equipped with the spout on the inner wall of U template open end, the U template inserts in the spout and sliding fit.

The utility model has the advantages that: realize arbitrary position locking, simple structure easy and simple to handle. The utility model is respectively abutted against the fixed shaft and the inner wall of the rotating rod in the radial direction through the locking pin shaft, and the rotating rod is locked through the static friction force existing between the locking pin shaft and the fixed shaft; when the push-pull rod is pulled, the limit of the locking pin shaft is released, and the rotating rod can rotate relative to the fixed shaft.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a sectional view taken along the line a in fig. 1.

Fig. 3 is a perspective view of the present invention with the outer wall of the rotating rod removed.

The components in the figures are numbered as follows: the device comprises a fixed seat 1, a support 101, a fixed shaft 3, a rotating rod 4, a rotating rod inner cavity 401, a sliding groove 402, a locking pin shaft 5, a push-pull rod 601, a U-shaped plate 602, a limiting hole 603 and a spring 604.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the scope of the present invention.

As shown in fig. 1 to 3, a rotation locking mechanism capable of being locked at any position comprises a fixed shaft 3 fixedly arranged on a fixed seat 1, wherein the fixed shaft 3 is in running fit with a rotating rod 4, the rotating rod 4 is provided with a rotating rod inner cavity 401, a limiting mechanism is slidably connected in the rotating rod inner cavity 401 and is in limiting fit with a locking pin shaft 5, and the locking pin shaft 5 is radially abutted to the inner walls of the fixed shaft 3 and the rotating rod 4 respectively. Therefore, the rotating rod is locked by the static friction force between the locking pin shaft and the fixed shaft; when the relative dwang of stop gear slided, the spacing of locking round pin axle was relieved, but the dwang fixed axle rotation relatively, the utility model discloses the structure is than the price simple, easily operates, can rotate when arbitrary position at the dwang and relieve the push-and-pull rod and can realize the locking.

In the above technical solution, the limiting mechanism includes a push-pull rod 601, the push-pull rod 601 is sleeved with a spring 604 in a compressed state, and the other end of the spring 604 is fixedly connected with the inner wall of the rotating rod 4. Therefore, under the action of the restoring force of the spring, the push-down rod in a normal state enables the limiting mechanism to limit the locking pin shaft all the time, and the rotating rod is always in a locking state; when the push-pull rod is pulled outwards, the limiting mechanism drives the locking pin shaft to be separated from the inner wall of the rotating rod, acting force does not exist between the rotating rod and the fixed shaft, and the rotating rod can rotate freely.

In the above technical scheme, one end of the push-pull rod 601 is fixedly connected with a U-shaped plate 602, the fixed shaft 3 is located in a groove of the U-shaped plate 602, the upper end surface and the lower end surface of the U-shaped plate 602 are respectively provided with a limit hole 603 with a width smaller than the diameter of the locking pin shaft 5, and the limit hole 603 is in limit fit with the locking pin shaft 5. Therefore, the locking pin shaft is limited along the length direction of the push-pull rod and can only move along the length direction of the push-pull rod in a direction perpendicular to the length direction of the push-pull rod, when the push-pull rod moves rightwards under the action of the restoring force of the spring, the locking pin shaft is simultaneously constrained by the limiting hole, the inner wall of the rotating rod and the fixed shaft and applies pressure to the inner wall of the rotating rod and the fixed shaft, so that the rotating rod can receive the static friction force of the locking pin shaft when rotating, the locking pin shaft receives the static friction force of the fixed shaft, and the locking of.

In the above technical solution, the inner wall of the rotating rod 4 near the opening end of the U-shaped plate 602 is provided with the sliding groove 402, and the U-shaped plate 602 is inserted into the sliding groove 402 and is in sliding fit. Thus, the limiting mechanism can slide along the sliding groove 402 under the action of pulling the push-pull rod or the restoring force of the spring, and push the locking pin shaft to be abutted against or separated from the inner wall of the rotating rod.

Claims

1. The utility model provides a rotation locking mechanism of optional position locking, is including fixed axle (3) of setting on fixing base (1), fixed axle (3) and dwang (4) normal running fit, its characterized in that: dwang (4) are equipped with dwang inner chamber (401), sliding connection has stop gear in dwang inner chamber (401), stop gear and the spacing cooperation of locking round pin axle (5), locking round pin axle (5) radially respectively with fixed axle (3) with the inner wall butt of dwang (4).

2. A rotation lock mechanism according to claim 1, characterized in that: the limiting mechanism comprises a push-pull rod (601), a spring (604) is sleeved on the push-pull rod (601), and the other end of the spring (604) is fixedly connected with the inner wall of the rotating rod (4).

3. A rotation lock mechanism according to claim 2, characterized in that: one end of the push-pull rod (601) is fixedly connected with a U-shaped plate (602), the fixed shaft (3) is located in a groove of the U-shaped plate (602), the upper end face and the lower end face of the U-shaped plate (602) are respectively provided with a limiting hole (603) with the width smaller than the diameter of the locking pin shaft (5), and the limiting hole (603) is in limiting fit with the locking pin shaft (5).

4. A rotation lock mechanism according to claim 3, characterized in that: dwang (4) lean on be equipped with spout (402) on the inner wall of U template (602) open end, U template (602) insert in spout (402) and sliding fit.