CN217984011U

CN217984011U - Clock spring

Info

Publication number: CN217984011U
Application number: CN202221605720.7U
Authority: CN
Inventors: 翁建盛
Original assignee: Ningbo Aishiming Auto Parts Co ltd
Current assignee: Ningbo Aishiming Auto Parts Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-12-06
Anticipated expiration: 2032-06-24

Abstract

The utility model discloses a clock spring, including last casing and lower casing, be provided with the sliding tray in the upper casing, the internal pad that is provided with of inferior valve is provided with electrically conductive shell fragment, its characterized in that between sliding tray and the pad: conductive shell fragment includes the fixed part with the pad laminating, extends the perk portion on the fixed part, and the outer end of perk portion forms the contact, and the fixed part is fixed to be set up on the pad, and conductive shell fragment arranges along the regional tangential direction of place pad. The utility model provides a clock spring improves the steadiness and the contact performance that electrically conductive shell fragment is connected.

Description

Clock spring

Technical Field

The utility model relates to a clock spring.

Background

The clock spring is also called a rotary connector and is used for connecting the main air bag and the air bag wire harness or connecting a switch knob of the steering wheel and the wire harness of the control unit. Because the main gasbag will rotate along with the steering wheel, can regard as a pencil that has certain length, twine in the steering wheel pivot, can reverse in good time when rotating along with the steering wheel loosen or wind tighter, but it also has the limit of rotation angle, will guarantee when the steering wheel is died to left or right, the pencil is not broken, so present clock spring will generally leave the surplus to the pencil is not broken when guaranteeing that the steering wheel is died to one side. Such clock springs are still limited by the length of the wiring harness.

Therefore, the Chinese utility model with the prior publication number of CN207819136U discloses a clock spring, which comprises an upper shell and a lower shell which are arranged in a vertical matching way, wherein the upper shell is fixedly connected to a steering wheel framework, the lower shell is fixedly connected to a steering column, a sliding disc made of a conductive material is arranged on the upper shell, and the sliding disc is electrically connected with a steering wheel electric appliance; the surface of the lower shell is provided with a bonding pad, the bonding pad is provided with a conductive elastic sheet, the conductive elastic sheet is always in contact with the sliding disc, and the bonding pad is connected with a vehicle power supply. The sliding disc is connected and conducted with the bonding pad through the conductive elastic sheet and can be kept to be conducted all the time in the rotating process, the sliding disc is electrically connected with the steering wheel electric connector through the first connector, the bonding pad is connected with a vehicle power supply through the second connector, and the problem that the wire harness is broken due to the limitation of the length of the wire harness when the rotating angle of the steering wheel is too large in the traditional clock spring is solved. Wherein, the electrically conductive shell fragment in this utility model designs into omega form, including top and hemisphere portion, the top welding is on the pad, and electrically conductive shell fragment has great elastic deformation volume because of its shape, and hemisphere portion ends the surface of sliding plate all the time in the relative rotary motion in-process of sliding plate and pad. However, the utility model discloses a top of electrically conductive shell fragment is the lug weld on the pad, is the point contact between top and the pad, and the connection between electrically conductive shell fragment and the pad is insecure, drops easily, and simultaneously, the contact between hemisphere portion and the sliding plate is also not good.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to prior art's current situation, provide a clock spring, improve the steadiness and the contact performance that electrically conductive shell fragment connects.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a clock spring, includes casing and lower casing, is provided with the sliding tray in the upper casing, is provided with the pad in the lower casing, is provided with electrically conductive shell fragment, its characterized in that between sliding tray and the pad: conductive shell fragment includes the fixed part with the pad laminating, extends the perk portion on the fixed part, and the outer end of perk portion forms the contact, and the fixed part is fixed to be set up on the pad, and conductive shell fragment arranges along the tangential direction in place pad region.

As an improvement, the two tilting parts are arranged on two opposite sides of the fixing part.

In another improvement, the outer end of the tilting part forms a fork part, and a plurality of contacts are formed on the fork part in parallel.

And the contact is an arc-shaped bent structure at the outer end of the tilting part.

In another improvement, the fixing portion is fixed to the pad by a rivet.

And the fixing part is fixed on the bonding pad in a welding mode.

The improved structure further comprises a connecting piece and a base plate, wherein the base plate is arranged between the fixing portion and the pad, and a connecting column which penetrates through the fixing portion and the base plate and is connected with the pad is formed on the connecting piece.

And the connecting piece is provided with an end head which is formed at the end part of the connecting column and has a size larger than that of the connecting column, and the end head is pressed on the fixing part.

And the conductive elastic sheet is improved to be controlled to be switched on and off by adopting a point contact type switch structure.

Compared with the prior art, the utility model has the advantages of: the utility model discloses a perk portion that the design slope extends on electrically conductive shell fragment for electrically conductive shell fragment arranges along the regional tangential direction of place pad, when the steering wheel rotates, if other contactless condition appears, as long as there is a point contact break-make that just can guarantee the steering wheel switch, the arc orbit has been constituteed at the both ends of perk portion, arc orbit adaptation rotates the orbit, contact performance has been improved, and simultaneously, realize connecting the pad through the design fixed part, fixed part and pad face contact have improved the steadiness that electrically conductive shell fragment connects greatly.

Drawings

Fig. 1 is a schematic structural diagram of a clock spring in an embodiment of the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 and 2, the clock spring in this embodiment includes an upper case 11, a lower case 12, a sliding plate 2, a pad 3, a conductive elastic piece 4, a connector 5, and a pad 6.

Wherein, be provided with slide plate 2 in the last casing 11, be provided with pad 3 in the casing 12 down, be provided with electrically conductive shell fragment 4 between slide plate 2 and the pad 3, electrically conductive shell fragment 4 includes the fixed part 41 with the 2 laminating of pad, extend the perk portion 42 on fixed part 41, the outer end of perk portion 42 forms contact 43, preferably, contact 43 is curved structure of buckling for perk portion 42 outer end, fixed part 41 tiling is fixed to be set up on pad 3, electrically conductive shell fragment 4 arranges along the regional tangential direction of place pad 3. The tilted portion 42 may be one, and when the tilted portion 42 is located at one position, the tilted portion 42 is only formed at one end of the fixing portion 41, and preferably, there are two tilted portions 42, and the two tilted portions 42 are disposed at two opposite sides of the fixing portion 41.

Furthermore, the conductive elastic sheet 4 can be designed to be a fork-type structure, a fork part is formed at the outer end of the tilting part 42, a plurality of contacts 43 are formed on the fork part in parallel, the contact number of the contacts 43 is increased by increasing the number of the contacts 43, and the connection performance is enhanced.

In addition, as for the fixing connection mode between the conductive elastic sheet 4 and the pad 3, a welding connection mode can be directly adopted, and in this case, the fixing part 41 only needs to be fixed on the pad 3 in a welding mode. Alternatively, a riveting connection mode may also be adopted, and the fixing portion 41 is fixed on the pad 3 by a rivet, preferably, two rivets may be designed to fix the conductive elastic sheet 4; meanwhile, a connecting piece 5 and a backing plate 6 can be additionally arranged, the backing plate 6 is arranged between the fixing part 41 and the pad 3, and a connecting column 51 which penetrates through the fixing part 41 and the backing plate 6 and is connected with the pad 3 is formed on the connecting piece 5. Further, the connecting member 5 has a tip 52 formed at an end of the connecting post 51 with a size larger than that of the connecting post 51, and the tip 52 is pressed against the fixing portion 41.

Furthermore, in the embodiment of the present invention, the conductive elastic sheet 4 can be designed into a point-contact switch structure to control the on/off.

In the embodiment of the present invention, the clock spring works according to the principle that the upper housing 11 of the present invention is mounted on the steering wheel frame, and when the steering wheel frame rotates, the upper housing 11 rotates therewith; the upper shell 11 is fixedly provided with a sliding disc 2 made of a conductive material, a plug-in PCB (printed Circuit Board) can be preferably used, the sliding disc 2 is electrically connected with a first plug-in, and the first plug-in is connected to a steering wheel framework through an opening formed in the upper shell 11 and then connected to a steering wheel electric appliance. The lower shell 12 is provided with a pad 3, and the pad 3 is electrically connected with a second connector which is connected to the vehicle electrical appliance through an opening formed in the lower shell 12. Slide plate 2 and pad 3 are connected through electrically conductive shell fragment 4 and are switched on to can keep switching on all the time at rotatory in-process, slide plate 2 is connected with the steering wheel electric connector electricity through first connector, and pad 3 is connected with vehicle power through the second connector, has solved traditional clock spring and when steering wheel turned angle was too big, because the restriction of pencil length leads to the pencil to tear the problem.

To sum up, the utility model discloses a perk portion 42 that the design slope extends on electrically conductive shell fragment 4 for electrically conductive shell fragment 4 arranges along the tangential direction in place pad 3 region, when the steering wheel rotates, if other contactless condition appears, as long as there is a point contact break-make that just can guarantee the steering wheel switch, the contact 42 at perk portion 42 both ends has formed the arc orbit in the motion process, arc orbit adaptation rotation orbit, contact performance has been improved, and simultaneously, realize connecting pad 3 through design fixed part 41, the face contact mode between fixed part 41 and the pad 3, the steadiness that electrically conductive shell fragment 4 connects has been improved greatly.

Claims

1. The utility model provides a clock spring, includes casing (11) and casing (12) down, is provided with slide plate (2) in last casing (11), is provided with pad (3) in casing (12) down, is provided with electrically conductive shell fragment (4), its characterized in that between slide plate (2) and pad (3): conductive elastic sheet (4) include fixed part (41) with bonding pad (3) laminating, extend perk portion (42) on fixed part (41), the outer end of perk portion (42) forms contact (43), fixed part (41) are fixed to be set up on bonding pad (3), and conductive elastic sheet (4) are arranged along the tangent line direction in place bonding pad (3) region.

2. The clock spring according to claim 1, wherein: the two tilting parts (42) are arranged on two opposite sides of the fixing part.

3. The clock spring according to claim 1, wherein: the outer end of the tilted part (42) forms a branch part, and a plurality of contacts (43) are formed on the branch part in parallel.

4. The clock spring as in claim 1, wherein: the outer end of the contact (43) is of an arc-shaped bending structure, and the outer end of the tilting part (42) is provided with a contact hole.

5. The clock spring as in claim 1, wherein: the fixing portion (41) is fixed to the pad (3) by a rivet.

6. The clock spring according to claim 1, wherein: the fixing part (41) is fixed on the bonding pad (3) in a welding mode.

7. The clock spring according to claim 1, wherein: still include connecting piece (5) and backing plate (6), backing plate (6) set up between fixed part (41) and pad (3), are formed with spliced pole (51) that passes fixed part (41) and backing plate (6) and be connected with pad (3) on connecting piece (5).

8. The clock spring according to claim 7, wherein: the connecting piece (5) is provided with a terminal head (52) which is formed at the end part of the connecting column (51) and has the size larger than that of the connecting column (51), and the terminal head (52) is pressed on the fixing part (41).

9. The clock spring according to claim 1, wherein: the conductive elastic sheet (4) adopts a point contact type switch structure to control the on-off.