A flat cable and rotor synchronous rotation structure and installation method thereof

Abstract

A structure for synchronous rotation of a flat cable and a rotor comprises a rotor mechanism, a stator mechanism and a welding assembly; the rotor mechanism comprises a rotating circle, an adapter plug box and a locking circle; the stator mechanism comprises an upper cover, a stator rubber box and a base; the welding assembly comprises an adapter plate, a flat cable and a pin connector; bosses are arranged on the inner wall of the rotating circle cylinder, a wire outlet is arranged on the outer wall of the rotating circle cylinder, the adapter plug box is arranged at the upper end of the rotating circle, and the exposed copper strips at both ends of the flat cable are respectively welded to the copper plates of the unenclosed parts of the adapter plate and the pin connector to form an electrical signal transmission path; the installation method is to install one end of the rotor mechanism adapter plate into the rotating circle adapter plug box, the flat cable is wound along the rotating circle outlet direction and installed in the inner hole of the upper cover; the lower end of the rotating circle is buckled on the base, and the locking ring is buckled; the flat cable passing through the rotating circle outlet is tightly wound and falls on the cylindrical surface of the locking ring; the friction between the flat cable and the stator is reduced, the service life is extended and the noise is reduced.

Description

Technical Field

[0001] The invention relates to a novel clock spring for automobiles, in particular to a structure and an installation method of a flat cable and a rotor rotating synchronously. Background Art

[0002] Clock springs are key components for multi-function buttons on car steering wheels and rotary connections for airbags.

[0003] A space is formed between the rotor that rotates synchronously with the steering wheel and the stator fixed on the combination switch, and a flat cable that transmits electrical signals is wound around it. One end of the adapter plate of the welding assembly is installed in the rotor adapter box, and the other end is installed in the stator plastic box. The flat cable (FFC) rotates with the rotor outlet direction. The flat cable is wound on the outer wall of the rotor. When it rotates in the opposite direction, the flat cable is loosened and wound on the inner wall of the stator. The flat cables fall on the stator axially. When the rotor rotates, the flat cable wound on the rotor also rotates synchronously, and is always in a relative motion state with respect to the stator. There will be friction between the flat cable and the stator, and the flat cable and the stator are always in a relative motion state, which causes a certain amount of wear on the flat cable. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a flat cable and rotor synchronous rotation structure and its installation method which can reduce the friction between the flat cable and the stator, thereby extending the service life of the flat cable and reducing the rotation friction noise between the flat cable and the stator.

[0005] The flat cable and rotor synchronous rotation structure of the present invention includes a rotor mechanism, a stator mechanism and a welding assembly; the rotor mechanism includes a rotating circle, an adapter box and an adapter plate, and a locking circle; the stator mechanism includes an upper cover, a stator rubber box and a base; the welding assembly includes an adapter plate, a flat cable and a pin connector. The rotating circle is a hollow cylinder, and bosses are arranged on the inner wall of the cylinder. There is an outlet on the outer wall of the cylinder, and the height is slightly greater than the width of the flat cable; the adapter box is used to transfer the clock spring and the steering wheel multifunctional connector. It is arranged at the upper end of the hollow cylinder of the rotating circle and is an integral structure with the cylinder. Part of the material is removed from the inner side of the adapter box, leaving a thin wall for fixing the adapter plate. The adapter plate and the pin connector are formed by copper plate stamping, and the outer part is partially encapsulated with insulating material. The exposed copper strips at both ends of the flat cable are respectively welded to the copper plates of the unencapsulated parts of the adapter plate and the pin connector to form an electrical signal transmission path.

[0006] The locking ring is a low cylindrical structure. The outer diameter of the locking ring cylinder is larger than the outer diameter of the rotating ring cylinder 1 and smaller than the inner through hole of the base. A "door"-shaped hook is provided near the center of the upper end of the cylinder of the locking ring, corresponding to the inner boss of the cylindrical inner wall of the rotating ring. The locking ring passes through the inner through hole of the base and snaps together with the boss on the inner wall of the rotating ring to form a rotor mechanism together; the upper cover is a hollow annular shell, and bumps are evenly arranged on the outer ring of the upper cover along the circumferential direction. The base is annular, and an inner through hole larger than the outer diameter of the locking ring is provided at the center of the base ring. Grooves are evenly arranged on the outer ring of the base, and the positions of the grooves correspond to the positions of the bumps on the upper cover. The stator rubber box is a square structure, arranged on the outer ring of the stator upper cover, and is used to place and fix the pin connector. After the upper cover boss is directly snapped with the base groove, the upper cover and the base form a stator mechanism, and the rotor mechanism rotates in the inner through hole of the base.

[0007] The flat cable is made of multiple copper strips with double-sided coating as the basis. It has a flexible and flat structure. The copper strips at both ends are exposed. One end is connected to the adapter plate of the rotor mechanism and is spirally wound on the rotating circle. The other end is arranged in the stator mechanism. The pin connector and the adapter plate are stamped out of copper plates, and the outside is partially encapsulated with insulating materials. The exposed ends of each copper strip serve as conductive joints. The flat cable is welded to the pin connector and the adapter plate respectively. After welding, the pin connector and the exposed pins on the adapter plate are connected through the flat cable. The flat cable is tightened and loosened as the rotating mechanism rotates clockwise and counterclockwise. The flat cable itself is weak in strength, and it is necessary to ensure the normal operation of the electrical signal transmission function within the warranty period. It is necessary to reduce the wear of the flat cable caused by the operation of the clock spring, thereby extending the life of the clock spring.

[0008] The installation method of the flat cable and rotor synchronous rotation structure of the present invention is:

[0009] (1) Install one end of the rotor mechanism adapter plate into the rotating circle adapter plug-in box, and the other end into the stator plastic box. The flat cable (FFC) is wound along the direction of the rotating circle outlet and installed in the inner hole of the upper cover;

[0010] (2) Buckle the lower end of the rotating ring onto the base, place the rotor mechanism and the electrical signal transmission system inside the stator mechanism, and buckle the locking ring to complete the assembly;

[0011] (3) The flat cable passing through the outlet of the rotating circle is wound tightly and falls on the cylindrical surface of the locking circle, so that the flat cable rotates synchronously with the rotor mechanism formed by the rotating circle and the locking circle to reduce the friction caused by the asynchronous rotation of the flat cable and the stator mechanism, thereby increasing the service life of the flat cable and reducing the friction and noise caused by the friction between the flat cable and the base.

[0012] The present invention is a structure in which a flat cable falls axially on a rotor. The flat cable and the rotor move synchronously. Compared with the original flat cable and stator mechanism relatively rotating structure, the friction between the flat cable and the stator injection molded part can be greatly reduced, thereby extending the service life and reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure in which the flat cable and the rotor rotate synchronously according to the present invention;

[0014] Figure 2 for Figure 1 Rear view of

[0015] Figure 3 for Figure 1 A top view of

[0016] In the figure: 1. rotating circle, 2. boss, 3. "door" shaped hook, 4. flat cable, 5. upper cover, 6. groove, 7. bump, 8. base, 9. locking ring, 10. adapter plate, 11. wire outlet, 12. pin connector, 13. stator rubber box, 14. adapter box, 15. inner through hole. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] The flat cable and rotor synchronous rotation structure of the present invention comprises a rotor mechanism, a stator mechanism and a welding assembly; the rotor mechanism comprises a rotating circle 1, an adapter plug box 14, an adapter plate 10, and a locking ring 9; the stator mechanism comprises an upper cover 5, a stator rubber box 13 and a base 8; the welding assembly comprises an adapter plate 10, a flat cable 4 and a plug-in connector 12. The adapter plate 10 and the plug-in connector 12 are respectively welded at both ends of the flat cable 4, the adapter plate 10 is fixed in the adapter plug box 14 on the rotating circle 1, the plug-in connector 12 is installed on the stator rubber box 13 of the upper cover 5, the flat cable 4 passes through the outlet 11 and is wound around the rotating circle 1, the base 8 is placed on the lower end of the rotating circle 1, and the groove 6 of the base 8 is buckled with the protrusion 7 of the upper cover 5 to form a stator mechanism. The locking ring 9 is placed on the lower end of the base 8, and the "door"-shaped hook 3 of the locking ring 9 is buckled with the boss 2 of the rotating circle 1 to form a rotor mechanism. The rotor mechanism rotates in the inner through hole 15 of the base 8. When the flat cable 4 is wound tightly around the rotating circle, the axial direction falls on the cylindrical surface of the locking circle 9, and the clock spring is assembled as the rotor rotates synchronously.

[0019] The installation method of the flat cable and rotor synchronous rotation structure of the present invention is:

[0020] (1) Install one end of the rotor mechanism adapter plate 10 into the rotating circle adapter plug-in box 14, and the other end into the stator rubber box 13. The flat cable (FFC) 4 is wound along the outlet direction of the rotating circle 1 and installed in the inner hole of the upper cover 5.

[0021] (2) Buckle the lower end of the rotating ring 1 onto the base 8, place the rotor mechanism and the electrical signal transmission system inside the stator mechanism, and buckle the locking ring 9 to complete the assembly;

[0022] (3) The flat cable 4 passing through the wire outlet 11 of the rotating circle 1 is wound tightly and falls on the cylindrical surface of the locking circle 9, so that the flat cable 4 rotates synchronously with the rotor mechanism formed by the rotating circle 1 and the locking circle 9, so as to reduce the friction caused by the asynchronous rotation of the flat cable 4 and the stator mechanism, thereby improving the service life of the flat cable and reducing the friction and noise caused by the friction between the flat cable and the base.

[0023] The flat cable of the present invention is installed on the combination switch and then installed in the steering wheel. The multi-function button connector on the steering wheel is inserted into the adapter box 14, and the vehicle wiring harness connector is inserted into the pin connector 12 to form a rotary connection electrical signal transmission system. The flat cable 4 is tightened and loosened as the rotating mechanism rotates clockwise and counterclockwise to complete the rotary connection function.

Claims

1. A method for installing a flat cable and a rotor synchronously rotating structure, characterized in that: (1) Install one end of the rotor mechanism adapter plate into the rotating circle adapter plug-in box, and the other end into the stator plastic box. Wrap the flat cable (FFC) along the direction of the rotating circle outlet and install it in the inner hole of the upper cover. (2) Buckle the lower end of the rotating ring onto the base, place the rotor mechanism and the electrical signal transmission system inside the stator mechanism, and buckle the locking ring to complete the assembly; (3) The flat cable passing through the outlet of the rotating circle is wound tightly and falls on the cylindrical surface of the locking circle, so that the flat cable rotates synchronously with the rotor mechanism formed by the rotating circle and the locking circle to reduce the friction caused by the asynchronous rotation of the flat cable and the stator mechanism; The flat cable and the rotor synchronously rotate structure comprises a rotor mechanism, a stator mechanism and a welding assembly; The rotor mechanism includes a rotating circle, an adapter box, and a locking circle; the stator mechanism includes an upper cover, a stator rubber box and a base; the welding assembly includes an adapter plate, a flat cable, and a pin connector; the rotating circle is a hollow cylinder, and bosses are arranged on the inner wall of the rotating circle cylinder, and an outlet is provided on the outer wall of the rotating circle cylinder, and the outlet height is slightly greater than the width of the flat cable; the adapter box for connecting the clock spring and the steering wheel multi-function connector is arranged at the upper end of the rotating circle cylinder, and an adapter plate is fixed on the inside of the adapter box. The exposed copper strips at both ends of the flat cable are respectively welded to the copper plates of the unsealed parts of the adapter plate and the pin connector to form an electrical signal transmission path; the locking ring is a low cylindrical structure, and the outer diameter of the locking ring cylinder is larger than the outer diameter of the rotating circle cylinder, but smaller than the inner through hole of the base; a through hole is provided near the center of the upper end of the locking ring cylinder There is a "door"-shaped hook, which corresponds to the boss on the cylindrical inner wall of the rotating circle; the locking ring passes through the inner through hole of the base and is buckled with the boss on the inner wall of the rotating circle to form a rotor mechanism; the upper cover is a hollow annular shell, and the outer circle of the upper cover is evenly arranged with bumps in the circumferential direction; the base is annular, and the center of the base ring is provided with an inner through hole larger than the outer diameter of the locking ring, and the outer circle of the base is evenly arranged with grooves, and the positions of the grooves correspond to the positions of the bumps on the upper cover; the stator rubber box for placing and fixing the pin connector is arranged on the outer circle of the stator upper cover; after the upper cover boss is directly buckled with the base groove, the upper cover and the base form a stator mechanism, and the rotor mechanism rotates in the inner through hole of the base; the adapter box and the rotating circle cylinder are an integrated structure; the adapter plate and the pin connector are stamped out of copper plates, and the outside is partially encapsulated with insulating material.

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