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Flexible expansion device and manufacturing method thereof

The technology of an expansion device and a manufacturing method, which is applied in the field of musical instruments, can solve the problems of poor sealing of the end of the flexible expansion device, the locking force cannot be too large, and the locking force is difficult to grasp, etc., and achieves light weight and large expansion force. , make simple effects

Inactive Publication Date: 2020-04-28
CHENGDU YIHEYUAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing flexible expansion device requires a strong locking force for its pressure-bearing layer and connecting parts to be firmly sealed, but the locking force between the inner bag and the metal connecting part should not be too large, and it only needs to play a sealing role. Otherwise, the inner capsule will be damaged, and the sealing of the end of the flexible expansion device will be poor due to the difficulty in grasping the locking force.

Method used

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  • Flexible expansion device and manufacturing method thereof
  • Flexible expansion device and manufacturing method thereof
  • Flexible expansion device and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0057] Embodiment one: if figure 1 , image 3 and Figure 4 As shown, the flexible expansion device of the present invention includes a connecting body 05 that cooperates with the external connection, a plugging head 07, a locking sleeve 09, a compression sleeve 10, a stabilizing layer 11, and an anti-wear layer (that is, a wear-resistant layer) 12 , the inner bag 13, the pressure-bearing layer 14, etc., wherein the plugging head 07 can be replaced with a connecting body 05 to realize the serial connection of multiple flexible expansion devices.

[0058] Both ends of the inner bag 13 are open, and the material of the inner bag 13 can be nitrile rubber, thermoplastic elastomer, casting rubber and plastic material, and the casting rubber and plastic material includes polyurethane, polyol resin or polyether polyurethane.

[0059] The pressure-bearing layer 14 is woven from aramid fiber, carbon fiber, ultra-strong molecular weight polyethylene fiber, glass fiber or metal fiber. ...

Embodiment 2

[0135] Embodiment two: if figure 2 As shown, the flexible expansion device of the present invention includes a connecting body 05 that cooperates with the external connection, a locking sleeve 09, a compression sleeve 10, a stable layer 11, an anti-wear layer 12, an inner bag 13, a pressure-bearing layer 14, and the like.

[0136] One end of the inner bag 13 is opened and connected to the connecting body 05, and the other end is blocked to form a blind end. The blind end of the inner bag 13 does not use a connecting part, but uses a locking sleeve 09 to lock the wear-resistant layer 12 and the pressure-bearing layer 14 to form an internally closed end surface to seal the inner bag 13 .

[0137] The inner bag 13 with blind end adopts pouring method to make, as Figure 13 As shown, the specific steps of the pouring method are as follows:

[0138] 1) Assemble the feed end cap 22 to one end of the mold body 21;

[0139] 2) Assemble the bracket end cover 20 to the other end of ...

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Abstract

The invention discloses a flexible expansion device and a manufacturing method thereof. The flexible expansion device comprises an inner bag, wherein a stable layer, a wear-resisting layer and a pressure bearing layer are arranged outside the inner bag; when one end of the inner bag is open and the other end of the inner bag is plugged, the open end of the inner bag is arranged outside one end ofa connector in a sleeving mode, the two ends of the connector are penetrated through by a passage, one end of the pressure bearing layer and one end of the wear-resisting layer are locked in the middle of the connector by locking pieces, and the other end of the pressure bearing layer and the other end of the wear-resisting layer are locked and closed; and when the two ends of the inner bag are open, each of the two ends of the inner bag is arranged outside one end of one connecting component in a sleeving mode correspondingly, the two ends of the pressure bearing layer and the two ends of thewear-resisting layer are locked to the corresponding connecting components by locking pieces, wherein the two connecting components are both connectors, or one connecting component is the connector,and the other connecting component is a plug. The flexible expansion device is good in end sealing performance, and has the advantages of being large in lifting force, easy to manufacture, small in size, light in weight, large in application space, capable of saving materials and the like.

Description

technical field [0001] The invention relates to the technical field of musical instruments, in particular to a flexible expansion device and a manufacturing method thereof. Background technique [0002] The existing flexible expansion device requires a strong locking force for its pressure-bearing layer and connecting parts to be firmly sealed, but the locking force between the inner bag and the metal connecting part should not be too large, and it only needs to play a sealing role. Otherwise, the inner capsule will be damaged, and the sealing force of the end of the flexible expansion device will be poor due to the difficulty in grasping the locking force. [0003] Aiming at the problems in the related technologies, no effective solution has been proposed yet. Contents of the invention [0004] Aiming at the above-mentioned technical problems in the related art, the present invention proposes a flexible expansion device, which has good sealing performance at the end, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C39/10B29C35/02B29C63/24B29C41/02B29C48/00F16J15/46B29L22/02
CPCB29C35/02B29C39/10B29C41/02B29C63/24B29L2022/025B29L2022/027B29C48/001F16J15/46
Inventor 纪新刚
Owner CHENGDU YIHEYUAN TECH CO LTD
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