Rotary connector
A rotary joint and annular technology, applied in the field of connection structure between a fixed side cover body and a movable side cover body, can solve the problems of difficult forming, large deformation, easy to generate noise, etc.
Inactive Publication Date: 2008-07-02
ALPS ALPINE CO LTD
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Problems solved by technology
[0006] However, since conventional rotary joints are injection-molded with insulating resin, it is more difficult to mold the resin with high precision at the part that is separated from the rotary shaft in the radial direction, and because of aging changes, The deformation becomes large, and when the movable side cover 106 rotates, the distance in the radial direction from the rotation axis is relatively large, and the opposite annular protruding portion 114 is in sliding contact with the annular concave portion 115, which is likely to generate noise. question
Method used
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[0034] Below, according to figure 1 A first embodiment of the rotary joint of the present invention will be described with reference to FIG. 2 . figure 1 It is an exploded perspective view of the rotary joint of this embodiment, and FIG. 2 is a cross-sectional view of main parts of the rotary joint of this embodiment.
[0035] Such as figure 1 As shown, the rotary joint of this embodiment mainly includes a housing 1, a cover body 2, a rotor (movable side cover body) 3, a rotor snap lock 4, a release member 5, a flexible cable 6, an annular bracket 7, Roller 8. All other components except the flexible cable 6 are formed of insulating resin.
[0036] The casing 1 is formed into a cylindrical shape of a required size, and at the lower part of its outer peripheral surface, a first engaging part 11 for snap-fitting the cover body 2 and a stator part for fixing the casing 1 to the automobile are formed. The mounting protrusions 12. In addition, an annular protruding portion 13 ...
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The invention provides a rotating connection which is capable of shaping a movable side cover with resin in good precision relative to a position restriction part of a fixed side cover and is prevented from generating noise caused by temperature variation or secular variation during rotating. The structure of the rotating connection comprises a shell; a cover; a rotor having a crest slab part and a first cylindrical part; a rotor snap having an annular locking part which is locked outside a lid body and a second cylindrical part which is combined with the first cylindrical part with a snap; a flexible cable which can be winded and unwound in the shell; and an annular plate part. A maintaining projection is projectively arranged from the outer periphery of the second cylindrical part towards the outside of the radius direction between the lower end of the first cylindrical part and the locking part so as to form a difference state on the inner rim of the upper surface of the lid body to provide a maintaining step part with the difference wall surface opposite to the side surface of the maintaining projection, and the inner rim of the lid body is rotatablely clamped by the lower surface of the maintaining projection and the upper surface of the annular plate part.
Description
technical field [0001] The present invention relates to a swivel joint for electrically connecting an electrical device on a steering wheel to an electrical device on a vehicle body, and more particularly to a connection structure between a fixed side cover and a movable side cover. Background technique [0002] In the past, as shown in FIG. 5 , a known rotary joint has: a fixed side cover 103 having a cylindrical casing 101 and an annular cover 102 covering one end of the casing 101; a movable side cover 106 having a cover The annular top plate portion 104 at the other end of the housing 101 and the first cylindrical portion 105 erected downward from the inner peripheral end of the top plate portion 104; 102, the annular locking portion 107 on the outer surface, the second cylindrical portion 108 standing up from the inner peripheral end of the locking portion 107, and the second cylindrical portion 108 connected to the second cylindrical portion 108 and connected to the st...
Claims
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IPC IPC(8): H01R35/04B60R16/02
Inventor 荒木俊二高桥静始伊藤和彦
Owner ALPS ALPINE CO LTD