KR100671013B1 - Noise protection unit for rotating connector and rotating connector having the same - Google Patents

Abstract

The present invention relates to a noise preventing unit for a rotary connector and a rotary connector having the same, and to guide the flat cable bottom surface on the stator so as to prevent the vertical flow of a plurality of flat cables guided by the rotating plate in the housing. To form a part, and to form a curved projection to contact the support surface of the flat cable on the outer surface of the rotating plate, to prevent the flow in the flat cable flow to easily prevent noise in the housing. In addition, by forming a fixing protrusion on the terminal block for fixing the end of the flat cable to weld the end of the flat cable to facilitate the welding of the flat cable.

Description

Noise prevention unit for rotary connector and rotary connector having same {NOISE PROTECTION UNIT FOR ROTATING CONNECTOR AND ROTATING CONNECTOR HAVING THE SAME}

1 is an exploded perspective view showing a rotating connector having a noise preventing unit of the present invention.

2 is a plan view showing the rotating plate shown in FIG.

Figure 3 is a perspective view showing the operation of the rotary connector having a noise preventing unit of the present invention.

4 is a front view showing the operation of the rotary connector having a noise preventing unit of the present invention.

5 is a perspective view illustrating the terminal block shown in FIG. 1.

The present invention relates to a noise preventing unit for a rotating connector and a rotating connector having the same, and more particularly, to a noise preventing unit for a rotating connector and a rotating connector having the same so as to reduce noise due to flow in the housing during the flat cable rotation. It is about.

In general, a steering wheel assembly for a vehicle provides a steering wheel having a rotation function for the driver to change the direction of the vehicle, a steering column connected to the steering wheel to transmit power and drive the wheel, and various functions of the vehicle. It is largely composed of multi-function switch.

Here, an airbag installed above the steering wheel and a rotary connector for supplying power to the multifunction switch are essentially provided under the steering wheel of the vehicle.

Such a rotary connector is annular and has a housing having an accommodating portion therein, a rotor mounted on the housing, to which one end of a plurality of flat cables (flexible cables) is fixed, and located in the accommodating portion. It consists of a rotating plate for inverting and rotating the flat cable, and a stator coupled to the housing in the lower portion of the rotating plate to seal the receiving part.

Therefore, as the rotor rotates, the flat cable fixed to the rotor is wound on the rotating plate. Of course, according to the winding direction of the flat cable is divided into two types, one is to be wound in a spiral shape in the annular housing, and the other is to be wound in the reverse direction in the housing, the latter of the flat cable Since the length can be shortened, it is widely used in manufacturing cost of the rotary connector.

However, in the case of the former or the latter as described above, when the flat cable is rotated in the accommodating portion, the flat cable is rotated as described above in a state of being seated on the stator upper surface coupled with the housing. At this time, the plurality of flat cable is rotated while the lower surface is scratched on the upper surface of the stator, and also the up and down flow occurs in the receiving portion due to the external impact.

In addition, since the flat cable is wound on the outer surface of the rotating plate and rotates, a phenomenon in which the flat cable flows from side to side on the outer surface of the rotating plate and the inner side of the receiving unit further occurs.

Therefore, there is a problem that noise occurs in the rotary connector due to the above reasons when rotating the flat cable.

Therefore, the present invention was devised to solve the above problems, and an object of the present invention is to minimize the flow of the flat cable wound and rotated on the rotating plate on the stator from the impact from the outside to reduce the noise generated thereby The present invention provides a noise preventing unit for a rotating connector and a rotating connector having the same.

The noise preventing unit for the rotary connector of the present invention for solving the above problems is formed in a disc shape, the stator is fixed to one end of the flat cable; And a guide protrusion formed along the stator outer circumference to contact the flat cable to guide rotation of the flat cable.

Here, the guide protrusion is preferably to be in contact with the bottom surface of the flat cable.

The guide protrusion may include a plurality of guide parts formed along the stator outer circumference and a support part formed to contact and guide the lower surface of the flat cable between the guide parts.

In addition, the anti-noise unit for a rotary connector of the present invention includes a rotating plate mounted to rotate in the receiving portion; A flat cable rotating in contact with the outer surface of the rotating plate; And a curved protrusion formed on an outer surface of the rotating plate to be in contact with one surface of the flat cable so that the flat cable is prevented from flowing in the housing.

On the other hand, the rotary connector having a noise preventing unit of the present invention includes a housing having an annular receiving portion; A rotating body mounted to the housing and fixed to one end of the flat cable; A rotating plate positioned in the housing to invert the flat cable to rotate; And a noise preventing unit coupled to the housing to seal the accommodating part, and the other end of the flat cable is fixed and prevent the flow of the flat cable.

The noise preventing unit includes a disk-shaped stator coupled to the housing, the other end of which is fixed to the flat cable, and a guide part which is formed along the stator outer circumference to rotate in contact with the bottom surface of the flat cable. .

And the guide is preferably a guide protrusion.

The guide protrusion may preferably include a plurality of guide parts formed along the stator outer circumferential part, and support parts formed to contact the bottom surface of the flat cable between the guide parts.

And the other end of the flat cable is welded to the terminal block (terminal block) is fixed on the stator, it is preferable to be welded by being fitted to the fixing projection formed on the terminal block.

In addition, the rotating plate is preferably formed with a curved protrusion in contact with one surface of the flat cable so that the flat cable prevents left and right flow in the receiving portion.

On the other hand, the rotary connector having a noise preventing unit of the present invention comprises a housing having an annular receiving portion; A rotating body mounted to the housing and fixed to one end of the flat cable; A noise preventing unit positioned in the housing to invert the flat cable to be rotated, and to prevent left and right flow of the flat cable; It is coupled to the housing to seal the accommodating portion, and the other end of the flat cable includes a stator is fixed.

Here, the noise prevention unit preferably includes a ring-shaped rotating plate and a curved protrusion protruding from the outer surface of the rotating plate so that one surface of the flat cable contacts and guides rotation.

And it is preferable that the guide projection formed on the stator to guide the rotation by supporting the lower surface of the flat cable along the outer periphery of the stator.

The guide protrusion may preferably include a set of guide parts formed along the stator outer circumference and a support part formed between the guide parts to support the flat cable bottom surface.

The other end of the flat cable is welded and fixed to the terminal block fixed on the stator, and is preferably welded by being fitted to the fixing protrusion formed on the terminal block.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the anti-noise unit for a rotary connector and a rotary connector having the same of the present invention.

First, a description will be given of a preferred embodiment of the anti-noise unit for a rotary connector of the present invention.

1 and 3, the noise prevention unit of the present invention is provided with a disc shaped stator 150 to which one end of the flat cable 50 is fixed, and the flat cable 50 along the outer periphery of the stator 150. It is composed of a guide portion 151 for guiding to rotate in the contact state of the bottom surface.

The guide portion 151 is to be brought into contact with the bottom surface of the flat cable 50 is rotated, a set of guide portion 151a formed along the outer peripheral portion of the upper surface of the stator 150 is formed, formed between the guide portion 151a And a support part 151b for supporting the lower surface of the flat cable 50.

In addition, the set of guide parts 151a functions to prevent the left and right from being separated when the plurality of flat cables 50 are rotated, and at the same time, the lower surface of the flat cable 50 to the support part 151b. Is contacted and supported.

Therefore, the flat cable 50 that rotates in the housing 122 is rotated by being supported by the support part 151b on the stator 150 as described above, so that the flat cable 50 rotates up and down due to an external impact. The flow can be easily prevented.

In addition, when the bottom surface of the flat cable 50 is rotated in contact with the support 151b, the flat cable 50 can be easily prevented from deviating from the left and right of the flat cable to facilitate the noise generated in the accommodating part 122. You can prevent it.

In addition, another embodiment of the noise preventing unit for the rotary connector of the present invention to prevent the noise by preventing the left and right flow in the housing 122 when the flat cable 50 is rotated with reference to Figs. To explain

1 and 2, another embodiment of the anti-noise unit for a rotary connector according to the present invention is provided with a rotating plate 130 mounted to rotate within the housing 120 in which the housing 122 is formed. In the flat cable 50 which rotates in contact with the outer surface of the rotating plate 130, the curved protrusion 131 is formed on the outer surface of the rotating plate 130 to prevent the left and right flow of the flat cable 50 in the housing 122. do.

In addition, the curved protrusion 131 is also formed on the outer surface of the ring-shaped rotating plate 130 hollow.

The curved protrusions 131 are formed at equal intervals.

Therefore, referring to FIG. 2, the flat cable 50 rotates in a wound state in contact with the curved protrusion 131 of the hollow outer surface of the rotating plate 130 and passes through the inverting portion A to the outer curved surface 131 of the rotating plate 130. ) Is rotated in contact with the arrow (direction b).

When one surface of the flat cable 50 is rotated in contact with the curved protrusion 131 on the outer surface of the rotating plate 130, one surface of the flat cable 50 is in contact with the outer surface of the rotating plate 130 with a minimum area, which may be caused by external impact. Noise generated in the payment part 122 can be prevented.

That is, the noise generated by the collision between the flat cable 50 between the outer surface of the rotating plate 130 and the housing 122 of the housing 120 may be minimized.

In addition, the curved protrusion 131 in contact with one surface of the flat cable 50 also plays a role of preventing the sliding during contact by supporting the flat cable 50 on one surface, thereby accurately guiding the rotation of the flat cable 50. It also works.

Next will be described a preferred embodiment for a rotary connector employing a noise prevention unit for a rotary connector according to the present invention.

Referring to FIG. 1, the rotary connector having the noise preventing unit of the present invention is provided with a housing 120 having an annular accommodating portion 122, and is mounted to be rotated on the housing 120, and includes a plurality of flat plates. The rotating body 110 is fixed so that the cable 50 is electrically connected. In addition, a cylinder 111 is formed below the rotating body 110 so that the flat cable 50 is fixed and wound around the outer surface of the cylinder 111.

In addition, the other end of the wound flat cable 50 is welded to the terminal block 160, respectively. The welding is preferably ultrasonic welding.

In addition, the housing 120 is positioned in the housing 122, and a ring-shaped rotating plate 130 is provided. The inversion roller 135 is mounted on the rotating plate 120 to form an inverting portion A that inverts the rotation direction of the flat cable 50 to guide the rotation. In addition, a plurality of protruding curved protrusions 131 formed at equal intervals are formed on the outer surface and the hollow outer surface of the rotating plate 130 to guide rotation in contact with one surface of the flat cable 50 that is inverted and rotated.

Subsequently, the housing 122 of the housing 120 on which the rotating plate 130 is mounted is coupled to the housing 120 to seal the rotating plate 130, supports rotation of the rotating plate 130, and prevents vertical flow of the flat cable 50. The noise prevention unit is installed.

The noise prevention unit rotates and supports the rotating plate 130, seals the receiving unit 122, and is provided with a second fixing groove 151 to which the terminal block 160 welded to the other end of the flat cable 50 is inserted and fixed. Stator 150 and guide portion 151 formed on the stator 150 along the outer periphery of the stator 150 to guide and support the lower end surface of the flat cable 50 which is guided and rotated by the outer surface of the rotating plate 130. do.

The upper portion of the terminal block 160 is fitted into the first fixing groove 121 formed in the housing 120 and fixed.

The guide part 151 is a protruding guide protrusion, and a set of guide parts 151a are formed along the outer circumference of the stator 150, and the flat parts 50 are in contact with the bottom surface of the flat cable 50 between the guide parts 151a and are flat. A support 151b is formed to prevent the up and down flow of the cable 50.

Meanwhile, referring to FIG. 5, a fitting hole 51a between the welded portions 51 formed at the other end of the flat cable 50 is inserted into and fixed to the terminal block 160 welded to the other end of the flat cable 50. The fixing protrusion 165 is formed to be.

The number of fixing protrusions 165 is preferably equal to the number of fitting holes 51a of the flat cable 50. In addition, the fixing protrusion 165 is preferably formed in plurality in order to prevent the lifting phenomenon of the flat cable (50).

That is, a plurality of fitting holes 51a are formed at the other end of the terminal block 50, and the welding portion of the flat cable 50 is inserted into the fixing protrusion 165 formed on the terminal block 160. The 51 is welded to the welding portion 161 of the terminal block 160 and electrically connected thereto.

Therefore, when the flat cable 50 is rotated, the fixing force at the other end fixed to the terminal block 160 can be improved, and the lifting phenomenon of up and down can be easily prevented.

In addition, a lower portion of the stator 150 illustrated in FIG. 1 is mounted with a sleeve 170 coupled to the housing 120 to fix the stator 150.

Next, the operation and effect of the rotary connector having the noise preventing unit of the present invention having the above configuration will be described according to the operation of the flat cable is rotated.

1 and 2, when the rotating body 110 is rotated to rotate the plurality of flat cables 50, the rotating body 110 is rotated on the housing 120.

At this time, one end of the flat cable 50 is welded to the rotor 110 and the other end is welded and fixed to the terminal block 160 inserted and fixed on the stator 150.

Therefore, referring to FIG. 2, the flat cable 50 is guided from the hollow outer surface of the rotating plate 130 rotated on the stator 150 in the receiving portion 122 to the inverting portion A and reversed by the inversion roller 135. Is rotated in the direction. Accordingly, one surface of the flat cable 50 passing through the inverting portion A comes into contact with the curved protrusion 131 formed on the outer surface of the rotating plate 130, and rotates in the rotation direction (arrow b direction).

At this time, since the flat cable 50 is in contact with the curved protrusion 131, the rotation is accurately guided, and the left and right flows between the inner surface of the housing 122 and the outer surface of the rotating plate 130 can be easily prevented. Can be.

Subsequently, referring to FIG. 3, the bottom surface of the flat cable 50 rotated through the inverting portion A is supported and rotated by the guide portion 151 formed on the outer circumference of the upper surface of the stator 150. The flat cable 50 is rotated between the guide portion 151a formed along the outer periphery of the top surface of the stator 150 as a guide protrusion, and the bottom surface of the flat cable 50 being rotated is formed between the guide portions 151a. It is rotated in the state of being contact-supported on the support part 151b. 3, the housing 120 illustrated in FIG. 1 is deleted.

Therefore, the noise due to the vertical flow of the flat cable 50 in the upper surface of the housing 122 and the upper surface of the stator 150 may be prevented due to external impact. In addition, there is an effect that can further prevent the left and right flow by being rotated between the guide portion (151a). That is, the flat cable 50 is prevented from being lifted from the top surface of the stator 150 when the inside of the housing 122 rotates to minimize the vertical flow.

In addition, referring to Figure 5, the other end of the flat cable 50 by welding a plurality of fitting holes (51a) formed on the other end of the flat cable 50 is fitted in the fixing protrusion 165 formed on the terminal block 160, That is, it is possible to prevent the end of the flat cable 50 fixed to the terminal block 160 to be lifted up and down.

Therefore, the flat cable 50 is guided by the curved protrusion 131 formed on the outer surface of the rotating plate 130 and prevented from side to side flow, and vertical flow through the guide portion 151 formed on the stator 150 This is prevented, and by being welded to the terminal block 160 as described above, the up and down flow and fixing force can be further improved to easily prevent the noise in the housing 122, it is possible to improve the durability of the product.

On the other hand, although not shown in the drawing, as described above, the guide portion 151, such as guide protrusions are formed along the outer periphery of the stator 150, the guide groove for guiding the rotation of the bottom surface of the flat cable 50 is formed It may be. Of course, when such a guide groove is formed, the depth of the guide groove should be formed so as to minimize the clearance from the flat cable 50 with the upper surface inside the receiving portion 122.

On the other hand, the noise preventing unit in the above embodiment is located in the housing 122 to be rotated by inverting the flat cable 50, it may be a noise preventing unit for preventing the left and right flow of the flat cable 50. That is, the noise preventing unit may include a ring-shaped rotating plate 130 and a curved protrusion 131 protruding from the outer surface of the rotating plate 130 so that one surface of the flat cable 50 contacts and guides rotation.

On the other hand, the noise prevention unit may be to prevent the flow of the flat cable 50 in the housing 122 in the up, down, left and right, the noise prevention unit is the rotary plate so that one surface of the flat cable 50 is in contact A guide protrusion 151 formed on the curved protrusion 131 protruding from the outer surface and the stator 150 and protruding along the outer periphery of the stator 150 to contact and support the bottom surface of the flat cable 50. And, it is fixed on the stator 150, it may be configured to include a terminal block 160, the other end of the flat cable 50 is fitted and welded.

Therefore, as in the above embodiment, the noise generated by the impact applied from the outside when the flat cable 50 is rotated in the housing 122, that is, the top, bottom, left and right flow can be prevented to reduce the noise.

Therefore, according to the present invention, the flat cable rotating in the housing prevents left and right flow by the curved protrusion formed on the outer surface of the rotating plate, and the up and down flow and the flat cable end are fixed by the guide part on the stator supporting the flat cable bottom surface. It is easy to prevent the lifting of the flat cable by inserting and welding the terminal block to prevent lifting, and to prevent the flow of up and down and left and right in the storage unit during the flat cable rotation, and to improve the fixing force to prevent noise In addition, there is an effect that can extend the life of the product by improving the durability.

Claims (20)

A stator formed in a disc shape and having one end of a flat cable fixed thereto; And Noise preventing unit for a rotary connector including a guide portion formed along the stator outer peripheral portion to contact the flat cable to guide the rotation of the flat cable. The method of claim 1, The guide unit is a noise preventing unit for a rotary connector, characterized in that the flat cable is in contact with the bottom surface. The method of claim 1, The guide part includes a plurality of guide parts formed along the outer periphery of the stator, and a support part formed to contact and guide the lower surface of the flat cable between the guide parts. delete A housing in which an annular accommodating portion is formed; A rotating body mounted to the housing so that one end of the flat cable is fixed; A rotating plate positioned in the housing to invert the flat cable to rotate; And And a noise preventing unit coupled to the housing to seal the accommodating part, the other end of the flat cable being fixed, and preventing the flow of the flat cable. The method of claim 5, The noise prevention unit is coupled to the housing, and includes a disk-shaped stator to which the other end of the flat cable is fixed, and a guide part formed along the stator outer circumference to guide the pivoted state in contact with the bottom surface of the flat cable. Rotating connector having a noise prevention unit characterized in. The method of claim 6, The guide unit is a rotary connector having a noise preventing unit, characterized in that the guide projection. The method of claim 6, The guide part includes a plurality of guide parts formed along the stator outer circumference, and a support part formed between the guide parts to contact the bottom surface of the flat cable. The method of claim 6, The other end of the flat cable is welded and fixed to the terminal block fixed on the stator, the rotary connector having a noise preventing unit, characterized in that the welding is fitted to the fixing projection formed on the terminal block. The method of claim 5, The rotating connector having a noise preventing unit, characterized in that the curved projection is formed in contact with one surface of the flat cable so that the flat cable is prevented left and right flow in the receiving portion. A housing in which an annular accommodating portion is formed; A rotating body mounted to the housing so that one end of the flat cable is fixed; A noise prevention unit positioned in the housing to invert the flat cable to be rotated, and to prevent left and right flow of the flat cable; And a stator to which the housing is coupled to the housing and the other end of the flat cable is fixed. The method of claim 11, The noise preventing unit includes a ring-shaped rotating plate and a curved connector protruding from the hollow outer surface and the outer surface of the rotating plate so that one surface of the flat cable contacts and guides rotation. The method of claim 11, And a guide portion formed on the stator to guide the rotation by contacting and supporting the lower end surface of the flat cable along the outer periphery of the stator. The method of claim 13, And the guide part comprises a set of guide parts formed along the outer periphery of the stator, and a support part formed between the guide parts and supporting the lower end surface of the flat cable. The method of claim 11, The other end of the flat cable is welded and fixed to the terminal block is fixed on the stator, the rotary connector having a noise preventing unit, characterized in that the welding is inserted into the fixing projection formed on the terminal block. A housing in which an annular accommodating portion is formed; A rotating body mounted to the housing so that one end of the flat cable is fixed; A rotating plate positioned in the housing to invert the flat cable to rotate; A stator coupled to the housing to seal the accommodating part and the other end of the flat cable fixed thereto; And And a noise preventing unit for preventing up, down, left, and right flow of the flat cable in the housing. The method of claim 16, The noise preventing unit includes a curved protrusion protruding on the outer surface of the rotating plate so that one surface of the flat cable contacts, a guide part formed on the stator and protruding along the outer periphery of the stator to support the flat cable bottom surface. The terminal is fixed on the stator, the connector having a noise prevention unit comprising a terminal block to which the other end of the flat cable is inserted and welded. The method of claim 17, And the guide part includes a set of guide parts formed along the outer periphery of the stator, and a support part formed between the guide parts and supporting the lower end surface of the flat cable. The method of claim 17, The other end of the flat cable is welded and fixed to the terminal block fixed on the stator, the rotary connector having a noise preventing unit, characterized in that the welding is fitted to the fixing projection formed on the terminal block. The method of claim 17, The guide unit is a rotary connector having a noise preventing unit, characterized in that the guide projection.

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