CN211107269U

CN211107269U - Clock spring

Info

Publication number: CN211107269U
Application number: CN201921722088.2U
Authority: CN
Inventors: 吴凯博; 章国平; 杨培雷
Original assignee: BCS Automotive Interface Solutions Suzhou Co Ltd
Current assignee: Lisheng Automotive Technology Suzhou Co ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-07-28
Anticipated expiration: 2029-10-15

Abstract

The utility model discloses a clock spring, its include shell (2), with shell (2) rotatable coupling change piece (4) and connect in shell (2) with change locating pin (5) between piece (4), it is provided with grafting casing (40) to change piece (4), locating pin (5) are located including inserting main part (50) in grafting casing (40), with the pressing arm (51) that grafting casing (40) buckle is connected and with shell (2) are pegged graft end rocking arm (52), press arm (51) with end rocking arm (52) all with main part (50) link to each other. The utility model discloses the relative motion of restriction shell and commentaries on classics piece that can be reliable after well locating pin installation is accomplished, and when dismantling, only need to press down and press the arm and just can take off the locating pin, and the dismouting is very convenient, and repetitious usage can not influence the result of use yet, and the reliability is high.

Description

Clock spring

Technical Field

The utility model relates to a clock spring.

Background

The clock spring is arranged on an automobile steering column, can rotate along with the steering wheel and is used for ensuring that the electrical signals of the safety air bag loop and the functional key loops on the steering wheel can be normally transmitted in the rotating process of the steering wheel. Clock springs have gone from a single air bag circuit to a multi-functional integrated module, extending from simple body control functions to ancillary functions of comfort operation that meet noise requirements. Especially, multifunctional integration and comfortable operation meeting noise requirements are increasingly required in high-end vehicle types, so that the difference and the recognition degree between the high-end vehicle types and low-end vehicle types are increased, and the core value of products is improved.

The reliability, stability and comfort of the clock spring are important considerations in the product design process. In general, a clock spring includes a housing and a back case fixedly coupled to each other, a rotary block rotatably coupled in the housing, and a positioning pin coupled in the rotary block and the housing. The rotation of the rotating block is not allowed after the clock spring is assembled before loading, and the positioning PIN is used for fixing the rotating block and the shell at a certain position, forbidding relative movement and preventing a connector (such as a PIN needle) on the rotating block from being skewed by external force.

In the prior art, two main positioning modes of positioning by using a positioning pin are provided, one mode is a breaking mode, and the other mode is an interference mode.

Referring to fig. 1, the snap-off type is to set a middle portion 1 of a positioning pin to a narrow V-shaped structure, and break the positioning pin from the middle portion 1 by forcibly rotating or bending an upper portion 10 thereof after the entire vehicle is assembled; the snapping type positioning pin can ensure that the positioning pin is not easy to fall off, but the positioning pin cannot be recycled, so that the economy has a great defect, and if the size precision of a part is not enough, abnormal sound can be generated when the positioning pin which is broken in the positioning pin rotates, so that poor comfort is brought to customers;

the interference type is that the inclined plane is made on the locating pin, does the interference muscle on commentaries on classics piece, shell, inserts and changes piece, shell back through the spacing messenger of interference muscle and more tight when the locating pin inclined plane to accomplish the connection, can extract the locating pin after whole car assembly, thereby repeatedly usable locating pin. The size accuracy of the interference type positioning pin is difficult to control, the tightness of the positioning pin cannot be well controlled after the positioning pin is inserted, and for the particularly tight fit, the positioning pin is difficult to insert and difficult to pull out after the positioning pin is inserted; in addition, after the positioning pin is inserted once, due to the deformation of the positioning pin material, the tightness is greatly changed when the positioning pin is used next time, and the reliability of repeated use is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the above-mentioned defect among the prior art, provide a clock spring, its locating pin is connected reliably, can used repeatedly, and installs and removes the convenience.

In order to realize the above-mentioned utility model purpose, the utility model provides a clock spring, its include the shell, with but shell swivelling joint's commentaries on classics piece and connect in the shell with locating pin between the commentaries on classics piece, the commentaries on classics piece is provided with grafting casing, its characterized in that: the positioning pin comprises a main body inserted in the plug shell, a pressing arm connected with the plug shell in a buckling mode and a rotation stopping arm connected with the shell in a plug mode, and the pressing arm and the rotation stopping arm are connected with the main body.

Furthermore, the utility model discloses still provide following subsidiary technical scheme:

the pressing arm comprises a connecting rod portion connected with the main body and pressing portions and hooking portions which are respectively located on two sides of the connecting rod portion, and the hooking portions are connected with the inserting shell in a buckling mode.

The hooking part is provided with a clamping hole, and the inserting shell is provided with a clamping part matched and connected with the clamping hole.

The main body part is provided with a mounting hole, and the pressing arm is arranged in the mounting hole.

And a rib plate is arranged between the pressing part and the hooking part.

The main body is provided with a cover plate which is in contact with the upper end face of the plug-in shell.

The main body, the pressing arm and the rotation stopping arm are integrally formed.

The peripheral wall of the plug-in shell is provided with a groove, and the rotation stopping arm is inserted in the groove.

The rotation stopping arm is provided with a first baffle and a second baffle which are respectively positioned inside and outside the peripheral wall.

The rotating block is provided with a guide groove, and the positioning pin is provided with a wing plate matched and connected with the guide groove.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses well locating pin includes the main part of inserting in the grafting casing, presses the arm and ends the rocking arm with the shell grafting of being connected with grafting casing buckle, makes the locating pin can be reliable after the installation completion the relative motion of restriction shell and commentaries on classics piece, and when dismantling, only need to press down and press the arm and just can take off the locating pin, and the dismouting is very convenient, and repetitious usage can not influence the result of use yet, and the reliability is high;

2. the pressing arm is connected with the main body through the connecting rod part, and when the pressing part is pressed down, the hooking part is separated from the clamping part through the lever action, so that the use is very convenient;

3. the shell of the utility model is also provided with a guide groove matched with the wing plate of the positioning pin, thereby further facilitating the installation of the positioning pin and simultaneously more reliably limiting the positions of the rotating block and the shell;

4. the utility model discloses a pressing the splenium and colluding and be provided with the floor between the portion, can strengthen the intensity of pressing the arm on the one hand, on the other hand enables to press the better drive of splenium to collude even portion.

Drawings

Fig. 1 is a schematic view of a break-off type positioning pin in the prior art.

Fig. 2 is a schematic structural diagram of the clock spring of the present invention.

Fig. 3 is a schematic structural diagram of the middle rear shell of the present invention.

Fig. 4 is a schematic structural diagram of the middle housing and the rotating block of the present invention.

Fig. 5 is a schematic structural diagram of the transfer block of the present invention.

Fig. 6 is a front view of the positioning pin of the present invention.

Fig. 7 is a schematic structural view of the middle positioning pin of the present invention.

Fig. 8 is a schematic diagram of the connection between the positioning pin and the rotating block of the present invention.

Fig. 9 is a schematic diagram illustrating the connection between the positioning pin and the housing according to the present invention.

Detailed Description

The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings.

As shown in fig. 2, the clock spring according to a preferred embodiment of the present invention includes a housing 2, a rear case 3, a rotation block 4, and a positioning pin 5.

The outer shell 2 and the rear shell 3 are mutually connected in a snap-fit manner and fixed to each other, specifically, as shown in fig. 3 and 4, a plurality of convex hooks 20 are arranged on the side surface of the outer shell 2, a plurality of clamping grooves 30 for accommodating the hooks 20 are arranged on the rear shell 3, and the outer shell 2 can be connected to the rear shell 3 through the matching of the hooks 20 and the clamping grooves 30.

The housing 2 is provided with a receiving hole having a circular shape, and the rotary block 4 is provided in the receiving hole to be rotatable around the receiving hole axis.

As shown in fig. 5, the rotary block 4 is provided with an insertion housing 40 for connecting the positioning pin 5, and the insertion housing 40 is provided with a pin. A convex snap-in portion 43 is provided on the side wall 42 of the plug-in housing 40.

As shown in fig. 6 to 8, the positioning pin 5 includes a main body 50, a pressing arm 51 and a rotation stopping arm 52 connected to each other, and preferably, the positioning pin 5 is integrally injection-molded.

The main body 50 is provided with a horizontal cover plate 50a, and after the positioning pin 5 is connected to the rotating block 4, the cover plate 50a is in contact with the upper end surface 40a of the plug-in housing 40, so that the movement of the positioning pin 5 can be limited, the plug-in housing 40 can be better shielded, and foreign matters can be prevented from entering the plug-in housing 40.

The main body 50 has a mounting hole 50b, and the pressing arm 51 is mounted in the mounting hole 50 b. Specifically, the pressing arm 51 includes a link portion 51a, and pressing portions 51b and hooking portions 51c respectively located at upper and lower sides of the link portion 51 a. The two ends of the connecting rod part 51a are connected with the inner wall 50c of the mounting hole 50b, the hooking part 51c is connected with the plug-in housing 40 in a buckling mode, and specifically, the connecting rod part is provided with a clamping hole 51d matched with the clamping part 43 of the plug-in housing 40.

When the positioning pin 5 is installed, only the positioning pin 5 needs to be inserted into the inserting casing 40, the hooking portion 51c is blocked by the clamping portion 43 and can automatically generate elastic deformation, and the hooking portion 51c and the clamping portion 43 can restore to the original state after entering the clamping hole 51d, so that the hooking portion 51c and the clamping portion 43 are in clamping connection; when the positioning pin 5 needs to be taken down, the pressing part 51b only needs to be pressed down, and under the lever action, the hooking part 51c tilts up, so that the hooking part is disconnected from the clamping part 43, the pressing arm 51 can automatically recover deformation after the pressing part 51b is loosened, and the next use is not influenced. The pressing portion 51b is provided to be inclined outward for better pressing. To improve the strength of the pressing arm 51, the pressing portion 51b is preferably driven to the hooking portion 51c, and a rib 51e is connected between the pressing portion 51b and the hooking portion 51 c.

As shown in fig. 9, the rotation preventing arm 52 extends downward to be connected to the housing 2, thereby fixing the rotation block 4 and the housing 2. Specifically, the end of the rotation stopping arm 52 is inserted into the peripheral wall 21 of the housing 2, a groove 22 is formed in the peripheral wall 21 of the housing 2, the lower end of the rotation stopping arm 52 is inserted into the groove 22, so as to prevent the rotation stopping arm 52 from moving, and further, the lower end of the rotation stopping arm 52 is provided with a first baffle 52a and a second baffle 52b respectively located inside and outside the peripheral wall 21, so as to further limit the rotation stopping arm 52.

For convenient installation, the rotating block 4 is provided with a guide groove 44, and the rotation stopping arm 52 is provided with a wing plate 52c arranged in the guide groove 44, so that on one hand, the installation of the positioning pin 5 can be more convenient through the guiding action of the wing plate 52c and the guide groove 44; on the other hand, the guide groove 44 can further restrict the position of the positioning pin 5, and the fixing action of the positioning pin 5 is further secured.

When the positioning pin 5 is installed, only the positioning pin 5 needs to be inserted into the inserting casing 40, the pressing arm 51 of the positioning pin 5 can be automatically clamped with the clamping part 43, the positioning pin 5 is prevented from being separated, meanwhile, the rotation stopping arm 52 can be inserted onto the peripheral wall 21 of the shell 2, the shell 2 and the rotating block 4 are prevented from rotating relatively, and the installation is very convenient; when the positioning pin 5 needs to be taken down, the pressing arm 51 only needs to be pressed down, the pressing arm 51 and the clamping portion 43 are separated from the buckle for connection, then the positioning pin 5 is lifted upwards, the positioning pin 5 can be taken down, the use is very convenient, the positioning pin 5 can be repeatedly used, the use effect cannot be influenced by repeated use, and the reliability is high.

The utility model discloses a clock spring possesses following advantage at least:

It should be noted that the above-mentioned preferred embodiments are only for illustrating the technical concepts and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, and the protection scope of the present invention cannot be limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a clock spring, its include shell (2), with shell (2) rotatable coupling's commentaries on classics piece (4) and connect in shell (2) with locating pin (5) between commentaries on classics piece (4), commentaries on classics piece (4) are provided with grafting casing (40), its characterized in that: the positioning pin (5) comprises a main body (50) inserted into the plug-in shell (40), a pressing arm (51) connected with the plug-in shell (40) in a buckling mode and a rotation stopping arm (52) connected with the shell (2) in a plug-in mode, and the pressing arm (51) and the rotation stopping arm (52) are connected with the main body (50).

2. The clock spring as recited in claim 1, wherein: the pressing arm (51) comprises a connecting rod part (51a) connected with the main body (50), and pressing parts (51b) and hooking parts (51c) which are respectively positioned on two sides of the connecting rod part (51a), wherein the hooking parts (51c) are connected with the plug-in shell (40) in a buckling mode.

3. The clock spring as recited in claim 2, wherein: collude even portion (51c) and seted up joint hole (51d), grafting casing (40) be provided with joint portion (43) that connect with joint hole (51d) match.

4. The clock spring as recited in claim 2, wherein: the main body (50) is provided with a mounting hole (50b), and the pressing arm (51) is arranged in the mounting hole (50 b).

5. The clock spring as recited in claim 2, wherein: a rib plate (51e) is arranged between the pressing part (51b) and the hooking part (51 c).

6. The clock spring as recited in claim 1, wherein: the main body (50) is provided with a cover plate (50a) that contacts an upper end surface (40a) of the plug-in housing (40).

7. The clock spring as recited in claim 1, wherein: the main body (50), the pressing arm (51) and the rotation stopping arm (52) are integrally formed.

8. The clock spring according to any one of claims 1 to 7, wherein: a groove (22) is formed in the peripheral wall (21) of the plug-in shell (40), and the rotation stopping arm (52) is inserted into the groove (22).

9. The clock spring as recited in claim 8, wherein: the rotation stopping arm (52) is provided with a first baffle plate (52a) and a second baffle plate (52b) which are respectively positioned inside and outside the peripheral wall (21).

10. The clock spring as recited in claim 8, wherein: the rotating block (4) is provided with a guide groove (44), and the positioning pin (5) is provided with a wing plate (52c) matched and connected with the guide groove (44).