CN109532707B

CN109532707B - Automobile clock spring

Info

Publication number: CN109532707B
Application number: CN201811348123.9A
Authority: CN
Inventors: 吕斌
Original assignee: ZHEJIANG YANGMING AUTO PARTS CO Ltd
Current assignee: ZHEJIANG YANGMING AUTO PARTS CO Ltd
Priority date: 2018-11-13
Filing date: 2018-11-13
Publication date: 2020-04-17
Anticipated expiration: 2038-11-13
Also published as: CN109532707A

Abstract

The invention discloses an automobile clock spring, which comprises a chassis, the guide belt and the rotary table are arranged on one side, facing the base plate, of the rotary table, an annular rotating cavity is formed between the rotating ring and the base plate, a guide belt guide disc is fixedly arranged in the rotating cavity and comprises a guide wheel and a plurality of guide wheels, the guide wheel and the guide wheels are internally provided with connecting sheets distributed in a circular ring array mode respectively, a plurality of ventilation holes are formed in the connecting sheets in a through mode, an input terminal is arranged on the base plate, an output terminal is arranged on the rotary table, the guide belt is wound on the outer side of the rotating ring from the output terminal, one side of the guide wheel is wound around the rotating ring from the output terminal after the guide belt is wound around the rotating ring, the input terminal is extended out from the inner side of the rotary table in a reverse mode, the radial cross section of the outer annular wall of the rotating cavity is a circular ring-. The invention has the advantages of preventing the conduction band from being blocked and twisted off and improving the heat dissipation performance of the clock spring.

Description

Automobile clock spring

Technical Field

The invention relates to the technical field of automobile accessories, in particular to an automobile clock spring.

Background

The clock spring is also called a rotary connector and a spiral cable, is a wire harness used for connecting a main airbag and the airbag or connecting a steering wheel switch button and a control unit, generally comprises a flexible flat cable, a shell which rotates relatively, a conductive outgoing line, a neutral pin and a connector, and is arranged on the upper surface of a combined switch below a steering wheel of a vehicle or on a metal plate pipe column. In the left and right rotation actions of the steering wheel, the normal circuit connection of electric components such as a front safety airbag of a driver, a horn switch and the like can be ensured through the clock spring.

For example, the chinese patent document entitled "a clock spring with PCB connecting sheet" discloses a utility model with publication number CN207705545U, publication date 2017, 12 and 28, and the application discloses a clock spring with PCB connecting sheet comprising: the back of the base is provided with a plurality of through holes; the upper cover is buckled on the base, a mounting groove is formed in one side, facing the base, of the upper cover, the mounting groove and the base are surrounded to form an accommodating space, and the through holes are respectively communicated with the accommodating space; the PCB connecting piece is fixedly arranged in the accommodating space, a plurality of rows of pins are inserted into the PCB connecting piece, the pins extend outwards and penetrate through the through holes, and a plurality of welding areas are also arranged on the PCB connecting piece; the rotor penetrates through the upper cover and the base, the rotor is wound with a plurality of flat cables, each flat cable corresponds to each welding area, and the rotor can rotate around the axis of the rotor along with the flat cables. The disadvantages are that: 1. the rotor drives the flat cable to rotate around the axis line of the rotor, but when the rotor rotates and resets, the flat cable lacks of a limiting mechanism, when the rotor rotates and resets, the flat cable becomes loose, the turntable is easy to block in the rotating process, the flat cable is easy to twist off or cannot reset in a blocking state, and the potential safety hazard of flat cable failure exists; 2. when a driver drives a vehicle, the driver often encounters a situation of suddenly turning a steering wheel, the flat cable in the clock spring can rub with components such as an upper cover and a base at a high speed when rotating on the rotor, the surface of the flat cable generates heat rapidly, and because the clock spring is not provided with a ventilation and heat dissipation structure inside and outside, the surface of the flat cable is accumulated with heat, the resistance change of the flat cable is influenced, and the service life of the flat cable is also influenced.

Therefore, it is necessary to design a clock spring for an automobile which can prevent the clock spring from being locked and has a fast internal heat dissipation.

Disclosure of Invention

The invention provides an automobile clock spring, aiming at overcoming the defects that the cable in the existing clock spring is easy to be blocked, so that the clock spring is invalid, and the automobile clock spring can guide the cable in the clock spring, prevent the clock spring from being blocked, realize quick internal heat exchange, improve the reliability of the clock spring and prolong the service life of the clock spring.

In order to achieve the above object, the present invention adopts the following technical solutions.

A clock spring for car is composed of a chassis, a guide band with a rotary ring on its one side, a rotary cavity between said rotary ring and chassis, a guide band guide disk in said rotary cavity and consisting of a guide wheel and several guide leading wheels, several connecting plates with circular ring array distribution in said guide wheel and guide leading wheel, several air holes between said connecting plates, an input terminal on said chassis, an output terminal on said rotary disk, a guide band wound on said rotary ring from said output terminal, and a rotary ring with a rotary ring and a guide guiding plate, the radial section of the outer ring wall of the rotating cavity is a circular wavy line, and the outer side of the rotating disc is provided with radiating fins.

The guide belt bypasses the guide wheel, the rotating ring can tighten or loosen the guide belt during rotation, the relative positions of the axes of the rotating ring and the guide wheel are unchanged, the guide belt is tensioned while the guide wheel guides the guide belt during rotation of the rotating ring, and the guide belt can be limited by the guide wheel and the inner side of the chassis, so that the guide belt is orderly arranged and cannot be bent when being loosened by the rotating ring, the guide belt is prevented from being clamped and twisted off, and the reliability of the clock spring is improved; when the rotary table rotates, the rotating ring drives the guide wheel to synchronously rotate, the guide wheel drives the guide belt to complete position conversion of the guide belt, when a steering wheel is suddenly driven, the rotary table rotates at a high speed, the diameter of the guide wheel is far smaller than that of the rotating ring, the guide wheel plays a role in accelerating the autorotation speed of the guide wheel relative to the rotating ring, air on two sides of the guide wheel can generate convection under the high-speed rotation of a connecting sheet in the guide wheel, wind power is formed and diffused outwards, the dredging wheel drives the guide belt to rotate, the dredging wheel and the guide wheel are equal in size, the wind power is also generated in the dredging wheel, high-speed heat exchange air flow is formed in a rotating cavity, the heat diffusion of the guide belt is completed by the heat exchange air flow, when the rotary table rotates, the heat dissipation fins on the.

Preferably, the chassis comprises an annular outer shell and a bottom cover covering one side of the outer shell, and a plurality of fixed angles are arranged on the bottom cover. And fixing and mounting the chassis through the fixed angle.

Preferably, four dredging wheels are arranged, the four dredging wheels are positioned on the concentric circle of the same rotating ring, and the central angle occupied by the four dredging wheels is between 180 degrees and 270 degrees. The positioning and the auxiliary pressing of the guide belt are completed through the four dredging wheels, the guide belt is prevented from being curled or bent, and the service life of the clock spring is prolonged.

Preferably, circular reinforcing plates are arranged on two sides of the guide wheel and the guide wheel respectively, gaps exist between the two reinforcing plates and all connecting pieces, and air passing holes are formed in the reinforcing plates. The reinforcing plate is used for reinforcing the structural strength of the guide wheel and the guide wheel, air convection formed when the air passing opening and the gap finish the rotation of the guide wheel and the guide wheel is completed, the cooling inside the clock spring is completed, and the service life of the clock spring is prolonged.

Preferably, one side of the guide wheel, which bypasses the guide belt, is provided with a circular-arc limiting plate, the circle center of the limiting plate is the same as that of the guide wheel, and the difference between the diameter of the inner side surface of the limiting plate and the diameter of the guide wheel is 2-8 times of the thickness of the guide belt. The guide belt passes through a gap between the limiting plate and the guide wheel, and the limiting plate is used as an assistant to prevent the guide belt from being bent and blocked.

Preferably, a dredging arc frame is arranged between one side of the guide wheel, which is not wound around the guide belt, and the dredging wheel opposite to the side of the guide wheel, the dredging arc frame comprises a large arc plate and a small arc plate which are concentric, the circle centers of the large arc plate and the small arc plate correspond to the circle center of the rotating ring, and the distance from the large arc plate to the inner wall of the shell is equal to the distance from the small arc plate to the outer side wall of the rotating ring.

The guide belt encircles the leading wheel to the shell from the rotation, dredges the inside that the arc frame is located the guide belt of leading wheel both sides and presss from both sides, accomplishes the spacing of guide belt and dredges through big circular arc board and little circular arc board, prevents that the guide belt distortion from blocking.

Preferably, the two ends, far away from one side of the guide wheel, of the limiting plate are respectively provided with a first arc plate and a second arc plate, the first arc plate is equal to the great arc plate in a circle, the second arc plate is equal to the small arc plate in a circle, one ends, far away from the limiting plate, of the first arc plate and the second arc plate are connected and provided with a compression arc, the diameter of the compression arc is larger than the diameter difference value of the first arc plate and the second arc plate, and the central angle of the compression arc is larger than 180 degrees. The guide belt is limited around the dredging guide wheel by pressing the arc, so that the guide belt is prevented from being clamped between the guide wheel and the limiting plate; the auxiliary limiting of the conduction band is completed through the first arc plate and the second arc plate, and the service strength and the service life of the conduction band are improved.

Preferably, the connection point of the input terminal and the conduction band is tangent to the concentric circle of the rotating ring, and the connection point of the output terminal and the conduction band is tangent to the concentric circle of the rotating ring. The connection between the conduction band and the input terminal is smooth, the connection included angle between the conduction band and the input terminal is larger than 90 degrees, and the connection part between the conduction band and the input terminal is prevented from being bent; the included angle between the conduction band and the output terminal is larger than 90 degrees, so that the connection part of the conduction band and the output terminal is prevented from being bent, and the service life and the connection reliability of the conduction band are improved.

Preferably, the distance between the axis of the guide wheel and the rotating axis of the rotating ring is equal to the distance between the axis of the guide wheel and the rotating axis of the rotating ring, air deflectors are arranged between the guide wheel and between adjacent guide wheels, each air deflector is in a circular arc shape, the radius of each air deflector is equal to the distance between the axis of the guide wheel and the rotating axis of the rotating ring, an auxiliary plate is arranged on one side, facing the rotating ring, of each air deflector, each auxiliary plate is in a circular arc shape protruding towards the rotating ring, and a gap exists between each auxiliary plate and each air deflector. A shuttle-shaped guide air duct is formed by the air guide plate and the auxiliary plate, so that the convection speed of air in the rotating cavity is increased, and the heat dissipation efficiency is improved.

The invention has the advantages that: the guide belt bypasses the guide wheel, the rotating ring can tighten or loosen the guide belt during rotation, the relative positions of the axes of the rotating ring and the guide wheel are unchanged, the guide belt is tensioned while the guide wheel guides the guide belt during rotation of the rotating ring, and the guide belt can be limited by the guide wheel and the inner side of the chassis, so that the guide belt is orderly arranged and cannot be bent when being loosened by the rotating ring, the guide belt is prevented from being clamped and twisted off, and the reliability of the clock spring is improved; the connection part of the conduction band and the input terminal is prevented from being bent; the bending of the connection part of the conduction band and the output terminal is prevented, and the service life and the connection reliability of the conduction band are improved; the heat dissipation is fast after conduction band moving friction, and clock spring reliability is high.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is an external view of the present invention.

Fig. 3 is a right side view of fig. 2.

Fig. 4 is a left side view of fig. 3.

In the figure: the chassis 1 shell 11 bottom cover 12, guide belt 13 fixed angle 14 rotating disc 2 rotating ring 21 heat radiation fin 22 rotating cavity 23, guide belt guide disc 3 rotating shaft 31 guide wheel 32 guide wheel 33 connecting piece 340, guide plate 342 air passing hole 343 air guide plate 35 auxiliary plate 36 limiting plate 370 first circular arc plate 371 second circular arc plate 372 pressing circular arc 373 guiding arc frame 38 large circular arc plate 381 small circular arc plate 382 rotor 4 plectrum 41 input terminal 5 output terminal 6.

Detailed Description

The invention is further described below with reference to the figures and specific embodiments.

In fig. 1 to 4, an automobile clock spring comprises a chassis 1, a guide belt 13 and a turntable 2 capable of rotating relative to the chassis 1, wherein the chassis 1 comprises an annular outer shell 11 and a bottom cover 12 covering one side of the outer shell 11, and four fixed angles 14 are arranged on the bottom cover 12. The side of the turntable 2 facing the chassis 1 is provided with a rotating ring 21, the axis of the rotating ring 21 is the rotating shaft 31 line of the turntable 2, an annular rotating cavity 23 is formed between the rotating ring 21 and the chassis 1, the turntable 2 is fixedly provided with a guide belt guide disc 3 in the rotating cavity 23, the guide belt guide disc 3 is in a circular sheet shape fixed with the rotating ring 21, the guide belt guide disc 3 comprises a guide wheel 32 and a plurality of guide wheels 33, the guide wheel 32 and the guide wheels 33 have the same structure and the same size, and the distance between the axis of the guide wheel 32 and the rotating shaft 31 line of the rotating ring 21 is equal to the distance between the axis of the guide wheel 33 and the rotating shaft 31 line of the rotating ring 21. The through hole is arranged in the chassis 1 to enable the rotating ring 21 to extend out of the chassis 1, the rotor 4 is arranged on one side of the chassis 1, which is back to the rotating ring 21, and the rotor 4 is fixedly and hermetically connected with the rotating ring 21. The rotor 4 rotates the turntable 2 and the rotary ring 21, thereby preventing dust from entering the rotary chamber 23. The rotor 4 comprises two fan-shaped opposite shifting sheets 41, the rotor 4 is driven to rotate by the shifting sheets 41, and the rotor 4 drives the turntable 2 to rotate. The guide wheel 32 can be rotationally fixed on the guide belt guide plate 3, the guide belt guide plate 3 is provided with a plurality of rotating shafts 31, and the guide wheel 32 and the guide wheel 33 can be rotationally sleeved on the rotating shafts 31, so that the guide wheel 32 and the guide wheel 33 can rotate relative to the guide belt guide plate 3. Connecting pieces 340 distributed in a circular ring array mode are arranged in the guide wheel 32 and the guide wheel 33 respectively, a plurality of vent holes 341 are formed between the connecting pieces 340 in a penetrating mode, the connecting pieces 340 are obliquely arranged in the guide wheel 32 and the guide wheel 33, and the connecting pieces 340 are used for strengthening strength through three circular rings. Circular reinforcing plates 342 are respectively arranged on two sides of the guide wheel 32 and the guide wheel 33, gaps exist between the two reinforcing plates 342 and all connecting pieces 340, and air passing holes 343 are arranged on the reinforcing plates 342. Air deflectors 35 are arranged between the guide wheel 32 and the dredging wheel 33 and between the adjacent dredging wheels 33, the air deflectors 35 are circular arc-shaped, the radius of the air deflectors 35 is equal to the distance from the axis of the dredging wheel 33 to the axis of rotation 31 of the rotating ring 21, an auxiliary plate 36 is arranged on one side of the air deflectors 35 facing the rotating ring 21, the auxiliary plate 36 is circular arc-shaped protruding towards the rotating ring 21, and gaps exist between the auxiliary plate 36 and the air deflectors 35.

An input terminal 5 connected with one end of a conduction band 13 is arranged on the chassis 1, an output terminal 6 connected with the other end of the conduction band 13 is arranged on the rotary table 2, the conduction band 13 is wound on the outer side of the rotary ring 21 from the output terminal 6, the conduction band 13 is wound on the rotary ring 21 and then bypasses one side of the guide wheel 32 and extends out to the input terminal 5 along the inner side of the rotary table 2, and the winding direction of the conduction band 13 on the outer side of the rotary ring 21 is opposite to the extending direction of the conduction band 13 on the inner side of. The connection position of the input terminal 5 and the conduction band 13 is tangent with the concentric circle of the rotating ring 21, the connection position of the output terminal 6 and the conduction band 13 is tangent with the concentric circle of the rotating ring 21, and the extending and rotating direction of the conduction band 13 from the input terminal 5 along the inner wall of the shell 11 is the same as the extending and rotating direction of the conduction band 13 from the output terminal 6 along the outer wall of the rotating ring 21.

The radial section of the outer ring wall of the rotating cavity 23 is a circular wavy line, and the outer side of the rotating disc 2 is provided with a radiating fin 22. The number of the guide wheels 33 is four, the four guide wheels 33 are positioned on the concentric circle of the same rotating ring 21, and the central angle occupied by the four guide wheels 33 is larger than 180 degrees.

A circular arc-shaped limiting plate 370 is arranged on one side of the guide wheel 32, which bypasses the guide belt 13, the circle center of the limiting plate 370 is the same as that of the guide wheel 32, and the difference between the diameter of the inner side surface of the limiting plate 370 and the diameter of the guide wheel 32 is 8 times of the thickness of the guide belt 13. A dredging arc frame 38 is arranged between one side of the guide wheel 32, which does not pass around the guide belt 13, and the dredging wheel 33 opposite to the side of the guide wheel, the dredging arc frame 38 comprises a large arc plate 381 and a small arc plate 382 which are concentric, the circle centers of the large arc plate 381 and the small arc plate 382 correspond to the circle center of the rotating ring 21, and the distance from the large arc plate 381 to the inner wall of the shell 11 is equal to the distance from the small arc plate 382 to the outer side wall of the rotating ring 21. Limiting plate 370 is equipped with first circular arc board 371 and second circular arc board 372 on keeping away from the both ends of leading wheel 32 one side respectively, first circular arc board 371 is isometric with big circular arc board 381 common circle, second circular arc board 372 with little circular arc board 382 common circle isometric, the one end connection that limiting plate 370 was kept away from to first circular arc board 371 and second circular arc board 372 is equipped with compresses tightly circular arc 373, the diameter that compresses tightly circular arc 373 is greater than first circular arc board 371 and second circular arc board 372 diameter difference, the central angle that compresses tightly circular arc 373 is 200 degrees.

The guide belt 13 bypasses the guide wheel 32, the rotary ring 21 can tighten or loosen the guide belt 13 during rotation, the relative positions of the axes of the rotary ring 21 and the guide wheel 32 are unchanged, when the rotary ring 21 rotates, the guide wheel 32 guides the guide belt 13 and simultaneously tightens the guide belt 13, and the guide belt 13 can be limited by the dredging wheel 33 and the inner side of the bottom shell disc, so that the guide belt 13 is orderly arranged and cannot be bent when being loosened by the rotary ring 21, the guide belt 13 is prevented from being clamped and twisted off, and the reliability of the clock spring is improved; when the rotary disc 2 rotates, the rotating ring 21 drives the guide wheel 32 to synchronously rotate, the guide wheel 32 drives the guide belt 13 to complete the position change of the guide belt 13, when the steering wheel is suddenly turned, the rotary disc 2 rotates at a high speed, because the diameter of the guide wheel 32 is far smaller than that of the rotating ring 21, the guide wheel 32 has the function of accelerating the rotation speed of the guide wheel 32 relative to the rotating ring 21, the connecting piece 340 in the guide wheel 32 can generate convection under the high-speed rotation, wind power is formed and diffused outwards, as the dredging wheel 33 is driven to rotate by the guide belt 13, the dredging wheel 33 and the guide wheel 32 have the same size, wind power is also generated in the dredging wheel 33, thereby forming high-speed heat exchange air flow in the rotating cavity 23, the heat exchange air flow completes the heat diffusion of the conduction band 13, when the rotating disc 2 rotates, the heat radiating fins 22 on the surface of the rotary disc 2 and the outside air complete high-speed contact heat exchange, so that the heat radiation of the whole clock spring is completed, and the service life of the clock spring is prolonged.

Claims

1. A clock spring for automobile is composed of a chassis, a guide band and a rotary disk able to rotate relative to said chassis, and features that a rotary ring is arranged at one side of said rotary disk, an annular rotary cavity is formed between rotary ring and chassis, a guide band guide disk is fixed in said rotary cavity and is in the shape of ring, and is composed of a guide wheel and several guide rollers, said guide wheel is fixed to guide band guide disk, the guide wheel and guide rollers have connecting plates distributed in array mode, several air holes are formed between said connecting plates, the chassis has input terminal, output terminal is arranged on rotary disk, the guide band is wound on the rotary ring from output terminal, and is extended to input terminal along the inner side of rotary disk, the radial section of the outer ring wall of the rotating cavity is a circular wavy line, and the outer side of the rotating disc is provided with radiating fins.

2. The clock spring for a vehicle as claimed in claim 1, wherein said chassis includes a ring-shaped outer shell and a bottom cover covering one side of the outer shell, the bottom cover having a plurality of fixed corners.

3. The clock spring as claimed in claim 1, wherein the number of the guide rollers is four, four guide rollers are located on a concentric circle of the same rotating ring, and the central angle occupied by the four guide rollers is 180 to 270 degrees.

4. The clock spring for the automobile as claimed in claim 1, 2 or 3, wherein the guide wheel and the guide wheel are respectively provided with a circular reinforcing plate at both sides thereof, gaps exist between the two reinforcing plates and all the connecting pieces, and the reinforcing plates are provided with air passing holes.

5. The clock spring as claimed in claim 2, wherein the guide wheel has a circular limiting plate around the guide belt, the center of the limiting plate is the same as that of the guide wheel, and the difference between the diameter of the inner side of the limiting plate and the diameter of the guide wheel is 2 to 8 times the thickness of the guide belt.

6. The clock spring as claimed in claim 5, wherein a diverting arc frame is disposed between a side of the guide wheel not passing around the guide belt and a side of the guide wheel opposite to the side, the diverting arc frame comprises a large arc plate and a small arc plate which are concentric, the centers of the large arc plate and the small arc plate correspond to the center of the rotating ring, and the distance from the large arc plate to the inner wall of the housing is equal to the distance from the small arc plate to the outer side wall of the rotating ring.

7. The clock spring as claimed in claim 6, wherein a first arc plate and a second arc plate are respectively disposed at two ends of the side of the limiting plate away from the guide wheel, the first arc plate is concentric with the large arc plate and is equal in length, the second arc plate is concentric with the small arc plate and is equal in length, a pressing arc is connected to one end of the first arc plate and one end of the second arc plate away from the limiting plate, the diameter of the pressing arc is greater than the difference between the diameters of the first arc plate and the second arc plate, and the central angle of the pressing arc is greater than 180 °.

8. The clock spring for vehicles as claimed in claim 2, 5 or 6, wherein the junction of the input terminal and the conduction band is tangent to the concentric circle of the rotation ring, and the junction of the output terminal and the conduction band is tangent to the concentric circle of the rotation ring.

9. The clock spring as claimed in claim 1, wherein the distance between the axis of the guide wheel and the rotation axis of the rotation ring is equal to the distance between the axis of the guide wheel and the rotation axis of the rotation ring, the air deflectors are disposed between the guide wheel and the dispersion wheel and between adjacent dispersion wheels, the air deflectors are circular arc-shaped, the radius of the air deflector is equal to the distance between the axis of the dispersion wheel and the rotation axis of the rotation ring, an auxiliary plate is disposed on one side of the air deflector facing the rotation ring, the auxiliary plate is circular arc-shaped and protrudes towards the rotation ring, and a gap exists between the auxiliary plate and the air deflector.