Revolving shaft with muffling cam

A cam and shaft technology, applied in the field of opening and closing connection between the upper and lower covers, can solve the problems of unstable size, high cost, low yield, etc., to reduce manufacturing precision, eliminate abnormal sound, and easy to process and manufacture Effect

Inactive Publication Date: 2009-10-14
ZHEJIANG VOSO SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because the runner is sintered and formed by powder metallurgy material, the size is very unstable, so the finished product rate is low and the cost is high

Method used

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  • Revolving shaft with muffling cam

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Embodiment Construction

[0008] Depend on figure 1 It can be seen that the rotating shaft with the silencer cam in the present invention includes a bearing frame 3, a concave wheel 4, a cam 5 and a plurality of shrapnels 9 sequentially installed on the rotating shaft 2. Fastening, wherein a sound-absorbing sheet 7 is provided between the cam 5 and the shrapnel 9, three arc-shaped grooves 8 are evenly distributed on the outer circumference of the sound-absorbing sheet 7, and three arc-shaped grooves 8 are arranged on the outer circumference of the cam 5. The tongue piece 6 that arc-shaped groove 8 fits, and promptly cam 5 tightly cooperates and blocks sound-absorbing piece 7, makes both become one. At the same time, on the rotating shaft 2 , gaskets 10 are provided on both sides of the support frame 3 and between the elastic piece 9 and the nut 11 . Noise-absorbing sheet 7 is made of SK7 material.

[0009] During use, because the groove 8 on the cam 5 and the groove 8 on the sound-absorbing sheet 7 a...

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PUM

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Abstract

The invention relates to a revolving shaft with a muffling cam, comprising a staddle, a concave wheel, a cam and a plurality of spring plates, which are arranged in sequence on the revolving shaft; one end of the revolving shaft is fixedly connected with a fixing bracket, the other end thereof is tightly fixed by screw caps, wherein a muffling piece is arranged between the cam and the spring plate, at least three arc grooves are arranged on the external circumference of the muffling piece in an evenly distributed manner, at least three tongue pieces are arranged on the external circumference of the cam, which are assembled with the three arc grooves. The muffing piece is added between the cam and the spring plate on the revolving shaft and the muffing piece and the cam are tightly assembled into a whole by the tongue pieces and the grooves; in the way, the matching demand between the cam and the revolving shaft is lowered, thus reducing the requirement on the manufacturing precision of the cam and lowering the cost. The muffling piece is manufactured by pressing, is easy to process and manufacture and can be exactly assembled with the cam, thus realizing the effect of eliminating the abnormal sound.

Description

technical field [0001] The invention relates to a rotating shaft with a sound-absorbing cam, which belongs to the connection element between the rotating part and the fixed part, and is especially suitable for the opening and closing connection between the upper and lower covers of casings such as notebook computers. Background technique [0002] At present, there are many rotational connection modes between the upper and lower covers of housings such as notebook computers, the purpose of which is to make the display screen on the upper cover stably stop at any position when it is opened, so as to adapt to the observation needs of different groups of people. Among them, the self-closing rotating shaft with cam structure has the advantages of simple structure, and can stop at any position stably after opening the rotating parts. However, if the cam and the rotating shaft are too loosely fitted, there will be a jump due to a gap every time the cam is opened and closed, resulti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C11/04F16C11/12
Inventor 陆勤陆登秀胡迪
Owner ZHEJIANG VOSO SCI TECH
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