CN104565334B - A locking structure of a cable pin shaft - Google Patents

Abstract

The present invention provides a kind of drag-line bearing pin buckle structure, for the quick-fit of gear-shifting inhaul cable Yu selector, including the cable connector being arranged on described gear-shifting inhaul cable, clamping lining and the selector bearing pin being positioned on described selector；Wherein: clamping lining is hollow tubular, its one end is formed with flange, and the other end is set to flower-shaped opening；Cable connector is socketed on the outer surface between flange and the flower-shaped opening of described clamping lining；Selector bearing pin is formed with cannelure in end, and selector bearing pin passes and strut described flower-shaped opening from clamping bush inside, makes flower-shaped open end be held in the cannelure of selector bearing pin.Implement the drag-line bearing pin buckle structure that the embodiment of the present invention provides, assembly technology can be simplified, simultaneously it is also possible that selector spatial volume reduces, reach loss of weight and drop this purpose.

Description

A locking structure of a cable pin shaft

technical field

The invention relates to the field of automobile stoppers, in particular to a cable pin locking structure.

Background technique

When assembling auto parts, the assembly operation is often very difficult due to space constraints. The shift cable is connected inside the shifter. Due to the volume factor of the shifter, the space for installing the shift cable is narrow. It is almost impossible to realize it by using commonly used screw connections, pins, riveting and other processes.

In the traditional process, the shift cable joint and the shifter pin are usually positioned and connected by auxiliary parts such as cotter pins. Such a connection method makes the assembly process of the shift cable and the shifter complicated. Both connection and detachment take a lot of time. How to make the coordination between the shift cable joint and the shifter pin shaft simple, and how to quickly install and disassemble is a problem that needs to be faced by automobile design/manufacturing engineers.

Contents of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a cable pin lock structure, which solves the problems of narrow installation space and complicated assembly process in the prior art.

In order to solve the above-mentioned technical problems, the embodiment of the present invention provides a cable pin locking structure for quick cooperation between the shift cable and the shifter, including a cable joint arranged on the shift cable , a clamping bush and a shifter pin located on the shifter;

Wherein, the clamping bush is hollow tubular, with a flange formed at one end, and a flower-shaped opening at the other end;

The cable joint is sleeved on the outer surface between the flange of the clamping bush and the flower-shaped opening;

An annular groove is formed at the end of the shifter pin shaft, and the shifter pin shaft passes through the inside of the clamping bushing and expands the flower-shaped opening, so that the end of the flower-shaped opening is locked. Hold in the annular groove of the shifter pin.

Wherein, a tapered gap is reserved between the inner side of the cable joint and the outer surface of the socket of the clamping bush, and the socket is located between the flange of the clamping bush and the flower-shaped opening.

Wherein, the cable joint and snap-in bushing are made of plastic materials.

Wherein, the shifter pin is made of metal material.

Wherein, the first chamfer is formed on the inner side of the end of the flower-shaped opening of the locking bush that is clamped at the annular groove of the shifter pin; the shifter pin is formed on the outer side of the protruding shaft end Second chamfer.

Wherein, a third chamfer is formed on the side of the shifter pin shaft in the annular groove that is close to the outer end surface of the flower-shaped opening end of the locking bush.

Wherein, the value range of the angle of the first chamfer is less than 45 degrees.

Wherein, the value range of the angle of the second chamfer is less than 45 degrees.

Wherein, the value range of the angle of the third chamfer is greater than 60 degrees and less than 90 degrees.

Implementing the embodiment of the present invention has the following beneficial effects:

First of all, the cable joint is socketed with the snap-in bushing, and the shifter pin passes through the snap-in bushing and clamps the cable joint through the annular groove provided on it, so that the snap-in is firm and the assembly is simple ;

Secondly, since one end of the clamping bushing is provided with a flower-shaped opening, and a first chamfer is formed on the inner side of the flower-shaped opening end; The end of the pin shaft can easily pass through the inside of the snap-in bushing and stretch the flower-shaped opening of the snap-in bushing, so that the end of the flower-shaped opening is clamped in the annular groove of the shifter pin shaft, making the assembly process become very simple;

Again, the third chamfer is provided at the annular groove by the shifter pin shaft, which can ensure the safety of the connection between the shifter pin shaft and the snap-in bushing during use, and prevent the snap-in bushing from being easily disengaged from the shifter pin. The annular groove of the shaft comes out, and the two can also be disassembled during maintenance;

In addition, due to the removal of fixed parts such as cotter pins and gaskets, the cost of parts and man-hours are greatly reduced, and the space volume of the shifter can be reduced to achieve the purpose of weight reduction.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, obtaining other drawings based on these drawings still belongs to the scope of the present invention without any creative effort.

Fig. 1 is the connection schematic diagram of the cable pin locking structure provided by the present invention;

Fig. 2 is a schematic cross-sectional view of the assembled cable pin locking structure provided by the present invention;

Fig. 3 is a structural schematic diagram of the assembly stress of the shifter pin shaft when the angle of the first chamfer is 30 degrees;

Fig. 4 is a structural schematic diagram of the situation where the pin shaft of the shifter is disengaged and stressed when the angle of the third chamfer is 60 degrees;

In the figure: 1-cable joint, 2-clip bushing, 3-shifter pin, 4-shifter, 5-annular groove, 21-taper gap, 22-first chamfer, 23- 3rd chamfer, 24 - 2nd chamfer.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Fig. 1 and Fig. 2, it is a cable pin lock structure, which is used for the quick cooperation between the shift cable and the shifter 4, including the cable joint 1 arranged on the shift cable , snap-in bushing 2 and shifter pin 3 located on the shifter 4; wherein, the snap-in bushing 2 is hollow tubular, one end of which is formed with a flange, and the other end is set as a flower-shaped opening The cable joint 1 is sleeved on the outer surface between the flange of the clamping bush 2 and the flower-shaped opening; the shifter pin 3 is formed with an annular groove 5 at the end, the The shifter pin shaft 3 passes through the inside of the clamping bush 2 and stretches the flower-shaped opening, so that the end of the flower-shaped opening is clamped in the annular groove 5 of the shifter pin shaft 3 . Wherein, the cable joint 1 and the clip bushing 2 are made of plastic material, and the shifter pin shaft 3 is made of metal material.

Furthermore, a tapered gap 21 is reserved between the inner side of the cable joint 1 and the outer surface of the socket of the clamping bush 2, and the socket is located between the flange and the flower shape of the clamping bush 2. between openings.

At the same time, the inner side of the end of the ring groove 5 of the shifter pin 3 held by the flower-shaped opening of the engaging bush 2 forms a first chamfer 22; A second chamfer 24 is formed on the outer side of the shaft end, and there is a certain distance between the position where the second chamfer 24 is formed and the annular groove 5 . Wherein, the angle between the first chamfer 22 and the second chamfer is the angle formed by the beveled surface of the component and the positive horizontal plane of the component, and the value range of the angle is between 0 degrees and 90 degrees; through the first chamfer 22 Together with the second chamfer 24 , it can reduce the force between the snap-fit bush 2 and the shifter pin 3 when they are in contact, and can reduce the assembling force, thus making the assembling between the two easier.

Wherein, a third chamfer 23 is formed on the side of the shifter pin 3 in the annular groove 5 that is close to the outer side of the flower-shaped opening end of the engaging bush 2 . Among them, the angle of the third chamfer 23 is the angle formed by the oblique surface of the part and the reverse horizontal plane of the part, and the value range of the angle is between 0 degrees and 90 degrees. The purpose of the third chamfer 23 is to ensure the assembly The reliability and stability of the rear can prevent the snap-in bushing 2 from coming out of the annular groove 5 of the shifter pin 3 easily, and at the same time ensure that the shifter pin 3 can also be removed from the snap-in during maintenance. Remove it from bushing 2.

Furthermore, in the embodiment of the present invention, the value range of the angle between the first chamfer 22 and the second chamfer is less than 45 degrees, and the value range of the angle of the third chamfer 23 is greater than 60 degrees and less than 90 degrees Spend. Since the first chamfer 22 and the second chamfer 24 play a guiding role, if the angle of the chamfer is too large (such as greater than 45 degrees), it may cause self-locking during assembly. When the connecting bush 2 is assembled, physical damage will be caused to the flower-shaped opening of the snap-connecting bush 2 . If the angle of the third chamfer 23 is too small (such as less than 45 degrees), it is easy to cause the shifter pin 3 and the snap-in bushing 2 to be easily disengaged, resulting in a safety hazard when the operation cable is in use.

The working principles achieved by each chamfer will be described below with reference to FIG. 3 and FIG. 4 . As shown in Figure 3 and Figure 4, when the chamfering angle is 30 degrees, a force of 12 Newtons is applied, and the resistance is 6 Newtons; when the chamfering angle is 60 degrees, a force of 12 Newtons is applied, and the resistance is 10.4 Newtons.

For example, in one embodiment, if the angles of the first chamfer 22 and the second chamfer 24 are respectively 30 degrees, and if the angle of the third chamfer 23 is 60 degrees, under the same horizontal thrust condition, the gear will be shifted The assembly force for assembling the shifter pin shaft 3 into the clamping bush 2 only needs 6 Newtons; while the pull-out force for separating the shifter pin shaft 3 from the clamping bushing 2 needs 10.4 Newtons. Therefore, in the process of assembling and pulling out, under the condition of the same horizontal thrust, the pulling out force is much higher than the assembling force, so that the purpose of labor saving in assembling and laborious in disassembling is achieved.

The locking structure of the cable pin shaft provided in the embodiment of the present invention is that the cable joint 1 and the clamping bush 2 are pre-assembled together, and the shifter pin 3 passes through the inside of the clamping bush 2 and spreads out. The flower-shaped opening of the bushing 2 is clamped, and the end of the flower-shaped opening is clamped in the annular groove 5 of the shifter pin 3 . At this time, the shifter pin 3 is fixed on the shifter 4, and the shifter 4 will swing back and forth during operation; the cable joint 1 and the clamping bush 2 are fixed together, and assembled on the shifter pin 3 , and is connected with the cable connecting rod at the same time, and the back and forth swing of the shifter 4 is transmitted.

Considering the labor intensity of production workers, less assembly force is required, so a flower-shaped opening is arranged on the end of the clamping bush 2 and a first chamfer 22 is formed on the inner side, and the shifter pin 3 is positioned on the protruding shaft. The outer side of the end forms a second chamfer 24. When the shifter pin 3 passes through the cable joint 1 and the snap-in bushing 2, the flower-shaped opening of the snap-in bushing 2 needs to be stretched, so it needs to be pulled A tapered gap 21 is reserved between the inner side of the cable joint 1 and the outer surface of the socket of the clamping bush 2, and the socket is located between the flange of the clamping bush 2 and the flower-shaped opening, so that the flower There is a movable space in the shape opening, if the tapered gap 21 is not provided, the cable joint 1 cannot pass through the flower-shaped opening of the bushing 2 and engage with it, so the cable joint 1 and the snap-in bushing 2 cannot be fixed; At the same time, in order to ensure reliable stability after assembly, a circular groove 5 is provided on the shifter pin 3, so that the flower-shaped opening end is clamped in the annular groove 5 of the shifter pin 3, which can prevent Detachment of snap-in bushing 2; and maintenance and disassembly also need to be taken into consideration, so shifter pin 3 forms a third chamfer 23 in the annular groove 5 near the outer side of the flower-shaped opening end of snap-in bushing 2 .

Implementing the embodiment of the present invention has the following beneficial effects:

First of all, the cable joint is socketed with the snap-in bushing, and the shifter pin passes through the snap-in bushing and clamps the cable joint through the annular groove provided on it, so that the snap-in is firm and the assembly is simple ;

Secondly, since one end of the clamping bush is provided with a flower-shaped opening, and a first chamfer is formed on the inner side of the flower-shaped opening end; The end of the pin shaft can easily pass through the inside of the snap-in bushing and stretch the flower-shaped opening of the snap-in bushing, so that the end of the flower-shaped opening is clamped in the annular groove of the shifter pin shaft, making the assembly process become very simple;

Again, the third chamfer is provided at the annular groove by the shifter pin shaft, which can ensure the safety of the connection between the shifter pin shaft and the snap-in bushing during use, and prevent the snap-in bushing from being easily disengaged from the shifter pin. The annular groove of the shaft comes out, and the two can also be disassembled during maintenance;

In addition, due to the removal of fixed parts such as cotter pins and gaskets, the cost of parts and man-hours are greatly reduced, and the space volume of the shifter can be reduced to achieve the purpose of weight reduction.

The above disclosure is only a preferred embodiment of the present invention, which certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (8)

1. A cable pin lock structure, used for quick cooperation between the shift cable and the shifter (4), characterized in that it includes a cable joint (1) arranged on the shift cable, a clip Connect the bushing (2) and the shifter pin (3) on the shifter (4), where: The clamping bush (2) is hollow tubular, with a flange formed at one end and a flower-shaped opening at the other end; The cable joint (1) is sleeved on the outer surface between the flange of the clamping bush (2) and the flower-shaped opening; The shifter pin shaft (3) is formed with an annular groove (5) at the end, and the shifter pin shaft (3) passes through the inside of the clamping bushing (2) and spreads out the flower shaped opening, so that the end of the flower-shaped opening is clamped in the annular groove (5) of the shifter pin (3); Wherein, a tapered gap (21) is reserved between the inner side of the cable joint (1) and the outer surface of the socket of the clamping bush (2), and the socket is located at the socket of the clamping bush (2). 2) between the flange and the flower opening. 2. The locking structure of the cable pin shaft according to claim 1, characterized in that, the cable joint (1) and snap-in bushing (2) are made of plastic materials. 3. The locking structure of the cable pin shaft according to claim 1, characterized in that, the shifter pin shaft (3) is made of metal material. 4. The locking structure of the cable pin according to any one of claims 1 to 3, characterized in that, the flower-shaped opening of the locking bush (2) is clamped on the shifter pin ( 3) A first chamfer (22) is formed on the inner side of the end of the annular groove (5); a second chamfer (24) is formed on the outer side of the protruding shaft end of the shifter pin (3). 5. The locking structure of the cable pin shaft according to any one of claims 1 to 3, characterized in that, the shifter pin shaft (3) is in the annular groove (5) close to the clamping bushing ( 2) A third chamfer (23) is formed on one side of the outer end surface of the flower-shaped opening end. 6. The locking structure of the cable pin shaft according to claim 4, characterized in that, the value range of the angle of the first chamfer (22) is less than 45 degrees. 7. The locking structure of the cable pin shaft according to claim 4, characterized in that, the value range of the angle of the second chamfer (24) is less than 45 degrees. 8. The locking structure of the cable pin shaft according to claim 5, characterized in that, the range of the angle of the third chamfer (23) is greater than 60 degrees and less than 90 degrees.