CN216158088U

CN216158088U - Push-pull flexible shaft with guide bearing

Info

Publication number: CN216158088U
Application number: CN202122208301.1U
Authority: CN
Inventors: 郭思远; 王素玲
Original assignee: LUOYANG XINGYU FLEXIBLE SHAFT CONTROLLER CO LTD
Current assignee: LUOYANG XINGYU FLEXIBLE SHAFT CONTROLLER CO LTD
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-04-01
Anticipated expiration: 2031-09-13

Abstract

The utility model provides a push-pull flexible shaft with a guide bearing, which comprises an outer sleeve, a shaft core, an outer sleeve joint, a shaft core joint, a guide bearing and a push-pull rod, wherein the outer sleeve is fixedly connected with the shaft core; the guide bearing is composed of a joint bearing socket and a joint bearing head; the shaft core is arranged in the outer sleeve in a penetrating way, outer sleeve joints are fixedly connected to the left end and the right end of the outer sleeve respectively, and two ends of the shaft core penetrate through the outer sleeve joints respectively and are fixedly connected with the shaft core joints; wherein, the shaft core joint positioned at the right end of the shaft core is connected with the joint shaft socket, and the joint bearing head is connected with the push-pull rod; the other end of the push-pull rod is connected with an external control mechanism. According to the utility model, the guide tube is replaced by the guide bearing, and the connection mode between the shaft core and the push-pull rod is changed, so that the position of the swing center is changed, and the shaft core is prevented from fatigue fracture; the guide bearing has a larger guide angle, is suitable for more occasions, has better overall flexibility and service life than the guide pipe, and can greatly improve the quality of the flexible shaft.

Description

Push-pull flexible shaft with guide bearing

Technical Field

The utility model relates to a flexible shaft for controlling vehicles or machinery, in particular to a push-pull flexible shaft with a guide bearing.

Background

The flexible shaft is divided into a transmission flexible shaft and a push-pull flexible shaft according to a transmission mode, the push-pull flexible shaft is commonly used in motor vehicles, engineering machinery and other moving machinery, and the push-pull flexible shaft is used for remotely controlling actions such as pumps, valves, accelerators, flameout, braking and the like. In specific application, push-pull guiding is often required, a guide pipe is mostly adopted for guiding the push-pull flexible shaft, a push-pull rod and a flexible shaft core are arranged in the guide pipe, the shaft core, the push-pull rod and the guide pipe are fixedly connected in a rolling mode, and the guide principle is that the guide pipe axially moves in a specific structure so as to drive the shaft core to push and pull. For example, as shown in fig. 3, the gear selecting and shifting flexible shaft includes an outer sleeve 1, a shaft core 2, a fixed seat 7, a connecting pipe 8, a guide pipe 9, a push-pull rod 5, a flexible shaft support 10 and an annular baffle 11, the outer sleeve 1 of the flexible shaft is fixed inside the left end of the fixed seat 7 through the connecting pipe 8, the left end of the guide pipe 9 extends into the right end of the fixed seat 7, the push-pull rod 5 is arranged inside the guide pipe 9, the shaft core 2 in the flexible shaft extends out from the right end of the connecting pipe 8 and extends into the guide pipe 9, the shaft core 2 is fixedly connected with the push-pull rod 5 and the guide pipe 9, the right end of the push-pull rod 5 is connected with a ball joint assembly of an operating mechanism, and a ball stud on the ball joint assembly is connected with a gear selecting arm or a gear shifting arm of an operator; when the flexible shaft support 10 is fixed on the outer circumference of the fixed seat 7 through the annular baffle 11 to work, the shaft core 2 in the flexible shaft axially moves in the fixed seat 7 through the guide pipe 9 to complete the push-pull action.

When the flexible shaft with the guide pipe 9 is pushed and pulled, because the flexible shaft is required to have enough sensitivity to control, a gap is designed between the guide pipe 9 and the fixed seat 7, so that the push-pull rod 5 and the guide pipe 9 can swing when the flexible shaft is pushed and pulled, and the swing center is generally positioned at the left end of the guide pipe 9; the shaft core 2 at the swing center is easy to generate fatigue to cause fracture due to swing, so that the control durability of the flexible shaft is difficult to ensure; in addition, because the guide pipe 9, the shaft core 2 and the push-pull rod 5 are rolled into a whole, strain injury is generated on the rolling position of the guide pipe 9 during rolling, and therefore, in specific use, the rolling position of the guide pipe is easy to break due to swinging, and product quality accidents are caused.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the background art, the utility model aims to provide a push-pull flexible shaft with a guide bearing, wherein a guide pipe is replaced by the guide bearing, and the connection mode between a shaft core and a push-pull rod is changed, so that the position of a swing center is changed, and the shaft core is prevented from generating fatigue fracture; in addition, the guide bearing has a larger guide angle, is suitable for more occasions, has better overall flexibility and service life than a guide pipe, and can greatly improve the quality of the flexible shaft.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a push-pull flexible shaft with a guide bearing comprises an outer sleeve, a shaft core, an outer sleeve joint, a shaft core joint, a guide bearing and a push-pull rod; the guide bearing is composed of a joint bearing socket and a joint bearing head; the shaft core is arranged in the outer sleeve in a penetrating way, outer sleeve joints are fixedly connected to the left end and the right end of the outer sleeve respectively, and two ends of the shaft core penetrate through the outer sleeve joints respectively and are fixedly connected with the shaft core joints; wherein, the shaft core joint positioned at the right end of the shaft core is connected with the joint shaft socket, and the joint bearing head is connected with the push-pull rod; the other end of the push-pull rod is connected with an external control mechanism.

The left end of the joint shaft socket is provided with a connecting seat, and an internal thread is arranged in the connecting seat and is used for connecting a shaft core joint; the right end of the joint shaft socket is provided with a joint ball socket for mounting a joint bearing head.

The joint shaft socket is integrally of a cylindrical structure, the cylindrical surface of the joint shaft socket is matched with a guide cavity of an external guide mechanism, and the connecting seat and the joint ball socket are respectively arranged at the central positions of two cylindrical end surfaces.

The right end of the joint bearing head is provided with a connecting piece which is fixed into a whole, and the connecting piece is provided with an external thread used for connecting a push-pull rod.

The outer sleeve joint is provided with external threads for connecting an external structure and is used for fixing the position of the outer sleeve joint.

The shaft core joint is connected with the shaft core in a pressing mode and is provided with external threads.

The utility model has the beneficial effects that: according to the utility model, the guide tube is replaced by the guide bearing, and the connection mode between the shaft core and the push-pull rod is changed, so that the position of the swing center is changed, and the shaft core is prevented from fatigue fracture; in addition, the guide bearing has a larger guide angle, is suitable for more occasions, has better overall flexibility and service life than a guide pipe, and can greatly improve the quality of the flexible shaft.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of a guide bearing.

Fig. 3 is a schematic view of the overall structure of a conventional gear selecting and shifting flexible shaft.

FIG. 4 is an assembly view of the gear selecting and shifting flexible shaft adopting the utility model.

In the figure: 1. the device comprises an outer sleeve, 2, a shaft core, 3, an outer sleeve joint, 4, a shaft core joint, 5, a guide bearing, 6, a push-pull rod, 7, a fixed seat, 8, a connecting pipe, 9, a guide pipe, 10, a flexible shaft support, 11, an annular baffle, 51, a joint shaft socket, 52, a joint bearing head, 53, a connecting seat, 54 and a connecting piece.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, a push-pull flexible shaft with a guide bearing comprises an outer sleeve 1, a shaft core 2, an outer sleeve joint 3, a shaft core joint 4, a guide bearing 5 and a push-pull rod 6; the guide bearing 5 consists of a joint shaft socket 51 and a joint bearing head 52; the shaft core 2 is arranged in the outer sleeve 1 in a penetrating way, outer sleeve joints 3 are fixedly connected to the left end and the right end of the outer sleeve 1 respectively, and two ends of the shaft core 2 penetrate through the outer sleeve joints 3 respectively and are fixedly connected with shaft core joints 4; wherein, the shaft core joint 4 positioned at the right end of the shaft core 2 is connected with the joint shaft socket 51, and the joint bearing head 52 is connected with the push-pull rod 6; the other end of the push-pull rod 6 is connected with an external control mechanism.

Advantages of the utility model referring specifically to fig. 3 and 4, with the structure of the utility model, the guide bearing 5 is used to replace the guide tube 8, the shaft core is not easy to be damaged due to the position change of the swing center, and meanwhile, the connection between the shaft core 2 and the push-pull rod 5 can be in a firmer and more reliable manner. Of course, the flexible shaft of the utility model is not limited to the improvement of the gear selecting and shifting flexible shaft shown in fig. 3, and is also suitable for various flexible shafts with axial guiding function; in addition, the use of the guide bearing has a larger guide angle change range and is also suitable for more complicated application occasions.

The left end of the joint shaft socket 51 is provided with a connecting seat 53, and the connecting seat 53 is internally provided with internal threads for connecting the shaft core joint 4; the right end of the joint shaft socket 51 is provided with a joint ball socket for mounting a joint bearing head 52. The threaded connection mode is convenient for the assembly and the replacement of each part.

The joint shaft socket 51 is of a cylindrical structure as a whole, the cylindrical surface of the joint shaft socket is matched with a guide cavity of an external guide mechanism, and the connecting seat 53 and the joint ball socket are respectively arranged at the central positions of two cylindrical end surfaces. The joint shaft socket 51 may also have an outer surface having a guiding function such as a rectangular parallelepiped, a polygonal prism, or the like, according to the principles of the present invention.

The right end of the joint bearing head 52 is provided with a connecting piece 54 which is fixed into a whole, and the connecting piece 54 is provided with an external thread for connecting the push-pull rod 6.

The outer casing joint 3 is provided with external threads for connecting an external structure and has the function of fixing the position of the outer casing joint 3.

The shaft core joint 4 is connected with the shaft core 2 in a pressing mode, and the shaft core joint 4 is provided with external threads.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

The present invention is not described in detail in the prior art.

Claims

1. A push-pull flexible shaft with a guide bearing comprises an outer sleeve (1), a shaft core (2), an outer sleeve joint (3), a shaft core joint (4), a guide bearing (5) and a push-pull rod (6); the method is characterized in that: the guide bearing (5) consists of a joint shaft socket (51) and a joint bearing head (52); the shaft core (2) penetrates through the outer sleeve (1), outer sleeve joints (3) are fixedly connected to the left end and the right end of the outer sleeve (1) respectively, and two ends of the shaft core (2) penetrate through the outer sleeve joints (3) respectively and are fixedly connected with the shaft core joint (4); wherein, a shaft core joint (4) positioned at the right end of the shaft core (2) is connected with a joint shaft socket (51), and a joint bearing head (52) is connected with a push-pull rod (6); the other end of the push-pull rod (6) is connected with an external control mechanism.

2. A push-pull flexible shaft with a guide bearing as claimed in claim 1, wherein: the left end of the joint shaft socket (51) is provided with a connecting seat (53), and an internal thread is arranged in the connecting seat (53) and is used for connecting a shaft core joint (4); the right end of the joint bearing socket (51) is provided with a joint ball socket for installing a joint bearing head (52).

3. A push-pull flexible shaft with a guide bearing as claimed in claim 2, wherein: the joint bearing socket (51) is integrally of a cylindrical structure, the cylindrical surface of the joint bearing socket is matched with a guide cavity of an external guide mechanism, and the connecting seat (53) and the joint ball socket are respectively arranged at the central positions of two cylindrical end surfaces.

4. A push-pull flexible shaft with a guide bearing as claimed in claim 1, wherein: the right end of the joint bearing head (52) is provided with a connecting piece (54) which is fixed into a whole, and the connecting piece (54) is provided with an external thread for connecting the push-pull rod (6).

5. A push-pull flexible shaft with a guide bearing as claimed in claim 1, wherein: the outer sleeve joint (3) is provided with an external thread for connecting an external structure and is used for fixing the position of the outer sleeve joint (3).

6. A push-pull flexible shaft with a guide bearing as claimed in claim 1, wherein: the shaft core joint (4) is connected with the shaft core (2) in a pressing mode, and the shaft core joint (4) is provided with external threads.