CN220816380U

CN220816380U - Buffer device

Info

Publication number: CN220816380U
Application number: CN202322728833.7U
Authority: CN
Inventors: 张鹏; 高哲一
Original assignee: Mettler Toledo Technology China Co ltd; Mettler Toledo Changzhou Measurement Technology Ltd; Mettler Toledo Changzhou Precision Instruments Ltd
Current assignee: Mettler Toledo Technology China Co ltd; Mettler Toledo Changzhou Measurement Technology Ltd; Mettler Toledo Changzhou Precision Instruments Ltd
Priority date: 2023-10-11
Filing date: 2023-10-11
Publication date: 2024-04-19
Anticipated expiration: 2033-10-11

Abstract

The utility model discloses a buffer device, comprising: a buffer cylinder having a buffer chamber therein; the buffer assembly comprises a first elastic piece and a second elastic piece which are arranged in the buffer cavity; the movable piece is slidably arranged in the buffer cavity, and is clamped between the first elastic piece and the second elastic piece along the sliding direction of the movable piece; and one end of the output piece is positioned in the buffer cavity and connected with the movable piece, and the other end of the output piece is positioned outside the buffer cavity. According to the buffering device, the movable piece is clamped between the two elastic pieces, and the two elastic pieces are utilized to provide elasticity, so that the output piece connected with the movable piece has the effects of buffering and vibration reduction. The buffer device has the advantages of low requirement on tightness, low requirement on precision of parts, low cost, stability and reliability in vibration reduction and buffer performance.

Description

Buffer device

Technical Field

The present utility model relates to the field of buffering technology, and more particularly, to a buffering device.

Background

The damping device may be regarded as a device that dampens the impact and reduces the vibration. A gas spring serving as a buffering means serves as one kind of buffering means. The working principle of the gas spring is that the movement of the piston is adopted to change the volume of the closed chamber, change the pressure of the gas in the closed chamber and provide buffering effect. Therefore, the requirements on the precision of the cylinder body and other parts of the gas spring and the tightness of the connection part between the parts are high, and once the gas leaks, the gas spring can fail and cannot play a role in buffering.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

Disclosure of utility model

The utility model aims to provide a buffer device which has the advantages of stable vibration reduction and buffer performance and simple structure.

In order to achieve the above object, the present utility model provides a buffer device, comprising:

a buffer cylinder having a buffer chamber therein;

the buffer assembly comprises a first elastic piece and a second elastic piece which are arranged in the buffer cavity;

The movable piece is slidably arranged in the buffer cavity, and is clamped between the first elastic piece and the second elastic piece along the sliding direction of the movable piece;

And one end of the output piece is positioned in the buffer cavity and connected with the movable piece, and the other end of the output piece is positioned outside the buffer cavity.

In one or more embodiments, the buffer cylinder comprises a cylinder body and an end cover which are connected, the cylinder body and the end cover enclose the buffer cavity, a through hole is formed in the end cover, and the output piece is slidably inserted into the through hole.

In one or more embodiments, the first elastic member is clamped between the inner wall of the buffer cavity and the movable member along the sliding direction of the movable member;

And the second elastic piece is clamped between the movable piece and the end cover along the sliding direction of the movable piece.

In one or more embodiments, the end cap is a screw nut and the cylinder is threadably coupled to the end cap.

In one or more embodiments, the moveable member is threadably coupled to the output member.

In one or more embodiments, a double-stack self-locking gasket is installed between the movable piece and the output piece in a clamping manner along the axial direction of the output piece.

In one or more embodiments, the movable member is connected to the output member through the connecting member, the connecting member includes an abutting portion that abuts against the movable member, and a connecting portion that is screwed to the output member, and the connecting portion is disposed through the movable member.

In one or more embodiments, a double-stack self-locking gasket is installed between the movable piece and the abutting part in a clamping manner along the axial direction of the connecting part. In one or more embodiments, the first elastic member and the second elastic member are each rectangular compression springs.

In one or more embodiments, a knuckle bearing is mounted on the output member at an end remote from the moveable member.

Compared with the prior art, according to the buffering device, the movable piece is clamped between the two elastic pieces, and the two elastic pieces are utilized to provide elasticity, so that the output piece connected with the movable piece has the effects of buffering and vibration reduction. The buffer device has the advantages of low requirement on tightness, low requirement on precision of parts, low cost, stability and reliability in vibration reduction and buffer performance.

Drawings

FIG. 1 is a cross-sectional view of a cushioning apparatus according to an embodiment of the present utility model;

FIG. 2 is an enlarged view of FIG. 1A;

Fig. 3 is a partial cross-sectional view of a buffering device according to another embodiment of the present utility model.

The main reference numerals illustrate:

1. a buffer cylinder; 11. a cylinder; 111. a boss; 12. an end cap; 13. a buffer chamber; 2. a buffer assembly; 21. a first elastic member; 22. a second elastic member; 3. a movable member; 4. an output member; 5. double-stack self-locking gaskets; 6. a knuckle bearing; 7. a connecting piece; 71. an abutting portion; 72. and a connecting part.

Detailed Description

The following detailed description of embodiments of the utility model is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the utility model is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.

As shown in fig. 1 and 2, a damping device according to an embodiment of the present utility model includes a damping cylinder 1, a damping assembly 2, a movable member 3, and an output member 4; the buffer cylinder 1 is internally provided with a buffer cavity 13; the cushion assembly 2 includes a first elastic member 21 and a second elastic member 22 installed in the cushion chamber 13; the movable piece 3 is slidably arranged in the buffer cavity 13, and the movable piece 3 is clamped between the first elastic piece 21 and the second elastic piece 22 along the sliding direction of the movable piece 3; one end of the output piece 4 is positioned in the buffer cavity 13 and connected with the movable piece 3, and the other end is positioned outside the buffer cavity 13.

It will be appreciated that by sandwiching the moveable member 3 between two resilient members, the resilience is provided by the two resilient members, so that the output member 4 connected to the moveable member 3 provides cushioning and vibration damping effects to the outside. The buffer device has the advantages of low requirement on tightness, low requirement on precision of parts, low cost, stability and reliability in vibration reduction and buffer performance. The movable member 3 can reciprocate linearly with the inside of the buffer cylinder 1.

Specifically, the output member 4 may be rod-shaped, and the sliding direction of the movable member 3 may be regarded as substantially the axial direction of the output member 4.

In use of the cushioning apparatus of the present utility model, the portion of the output member 4 located forward of the cushioning cylinders 1 may be connected to or in contact with one of the objects, and the other may be connected to or in contact with the other object. The output piece 4 and the buffer cylinder 1 can be considered to be elastically connected, so that the buffer device of the utility model can realize the function of providing vibration reduction and buffer for two objects. The above-mentioned object means an object other than the present apparatus, and the object may represent a part, a mechanism, an apparatus, a device, or a floor, a wall, or the like.

It should be noted that the action of restricting and guiding the movement direction of the movable member 3 can be achieved by controlling the relationship between the outer diameter of the movable member 3 and the inner diameter of the buffer chamber 13, that is, the outer diameter of the movable member 3 and the inner diameter of the buffer chamber 13 are substantially identical. Wherein substantial uniformity may be considered as the inner diameter of the buffer chamber 13 being greater than or equal to the outer diameter of the movable member 3 and the difference between the outer diameter of the movable member 3 and the inner diameter of the buffer chamber 13 being less than a threshold value, which may be adjusted according to requirements, for example, the threshold value being 10 μm, 150 μm, 1mm, 2mm, 1cm, etc. For example, when the inner diameter of the buffer chamber 13 is equal to the outer diameter of the movable member 3, it can be considered that the outer peripheral wall of the movable member 3 abuts against the inner wall of the buffer chamber 13 when the movable member 3 slides within the buffer chamber 13.

In a specific embodiment, the buffer cylinder 1 comprises a cylinder body 11 and an end cover 12 which are connected, the cylinder body 11 and the end cover 12 enclose a buffer cavity 13, a through hole is arranged on the end cover 12, and the output piece 4 is slidably inserted into the through hole.

It will be appreciated that the effect of limiting and guiding the direction of movement of the output member 4 may be achieved by limiting the relationship of the aperture of the through-hole to the outer diameter of the output member 4, i.e. the aperture of the through-hole is substantially coincident with the outer diameter of the output member 4. Wherein substantial uniformity may be considered as the aperture of the through-hole being greater than or equal to the outer diameter of the output member 4 and the difference between the aperture of the through-hole and the outer diameter of the output member 4 being less than a threshold value, which may be adjusted according to requirements, such as 10 μm, 150 μm, 1mm, 2mm, 1cm, etc.

As shown in fig. 1 and 2, specifically, the first elastic member 21 is sandwiched between the inner wall of the damper chamber 13 and the movable member 3 in the sliding direction of the movable member 3. The second elastic member 22 is sandwiched between the movable member 3 and the end cap 12 in the sliding direction of the movable member 3. The arrangement is to ensure that an elastic member is compressively deformed no matter whether the movable member 3 is advanced or retreated in the sliding direction thereof, thereby generating an elastic supporting force to the movable member 3, that is, a cushioning effect. Specifically, the end cover 12 is a screwing nut, and the cylinder 11 and the end cover 12 are in threaded connection. The cylinder body 11 and the end cover 12 are detachably connected, so that the buffer assembly 2, the movable piece 3 and the output piece 4 are conveniently installed in the buffer cylinder 1.

Further, the first elastic member 21 and the second elastic member 22 are rectangular compression springs. Wherein the second elastic member 22 is sleeved on the output member 4.

The movable member 3 and the output member 4 may be fixedly connected, detachably connected, or the like. Specifically, the movable member 3 and the output member 4 may be welded, glued, clamped, riveted, screwed, or the like.

In one embodiment, as shown in fig. 1 and 2, the movable member 3 is connected to the output member 4 through a connecting member 7, the connecting member 7 includes an abutting portion 71 abutting against the movable member 3, and a connecting portion 72 screwed to the output member 4, and the connecting portion 72 is disposed on the movable member 3 in a penetrating manner. Wherein the connecting part 72 is rod-shaped, and the outer surface of the connecting part is provided with external threads; one end of the output member 4 is provided with a screw hole, and the external screw thread on the connecting portion 72 is screwed with the screw hole. The movable piece 3 is provided with a hole for the connecting part 72 to pass through, one opening end of the hole on the movable piece 3 is contacted with the abutting part 71, the aperture of the opening end is smaller than the outer diameter of the abutting part 71, the connecting part 72 on the connecting piece 7 is in threaded connection with the output piece 4, and the output piece 4 is matched with the abutting part 71 to clamp the movable piece 3 so as to realize the connection between the movable piece 3 and the output piece 4.

Since the buffer device of the present utility model frequently slides the movable member 3, the output member 4 and the connecting member 7 during operation, and the connecting portion 72 is in threaded connection with the output member 4, in order to avoid the situation that the movable member 3, the output member 4 and the connecting member 7 are moved to cause the connecting portion 72 to be unscrewed and separated from the output member 4, the double-stack self-locking gasket 5 is clamped and installed between the movable member 3 and the abutting portion 71 along the axial direction of the connecting portion 72. The double-stack self-locking gasket 5 can avoid the autorotation phenomenon of the movable piece 3 and the output piece 4 when doing linear motion, thereby avoiding the situation that the connecting part 72 is unscrewed and separated from the output piece 4.

In another embodiment, as shown in fig. 3, the movable member 3 is welded to the output member 4. By this arrangement, the loosening and detachment of the movable member 3 and the output member 4 due to the screw connection can be prevented.

Further, in other embodiments, the movable member 3 and the output member 4 may be in transmission connection, for example, the movable member 3 is sleeved on a bearing, and the bearing is sleeved on the output member 4; it is also possible to avoid unscrewing and detachment caused by the threaded connection of the movable member 3 with the output member 4.

In one embodiment, as shown in fig. 1 and 2, the output member 4 is provided with a knuckle bearing 6 at an end remote from the movable member 3. The knuckle bearing 6 plays a role of being connected with other objects, and can increase the degree of freedom of the connection of the output member 4 with other objects.

In a specific embodiment, the outer surface of the cylinder body 11 of the buffer cylinder 1 may also be provided with a protruding portion 111, and the protruding portion 111 may be fixedly connected or movably connected with other objects, thereby increasing the application range of the buffer device.

The foregoing descriptions of specific exemplary embodiments of the present utility model are presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the utility model and its practical application to thereby enable one skilled in the art to make and utilize the utility model in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims

1. A cushioning device, comprising:

a buffer cylinder having a buffer chamber therein;

2. The cushioning device of claim 1, wherein the cushioning cylinder comprises a cylinder body and an end cover which are connected, the cylinder body and the end cover enclose the cushioning cavity, a through hole is arranged on the end cover, and the output piece is slidably inserted into the through hole.

3. The cushion device according to claim 2, wherein the first elastic member is sandwiched between an inner wall of the cushion chamber and the movable member in a sliding direction of the movable member;

4. The cushioning device of claim 2, wherein said end cap is a screw nut and said cylinder is threadably coupled to said end cap.

5. The cushioning device of claim 1, wherein said moveable member is threadably coupled to the output member.

6. The buffer device according to claim 5, wherein a double-stack self-locking gasket is clamped and installed between the movable piece and the output piece along the axial direction of the output piece.

7. The buffer device of claim 1, wherein the movable member is connected to the output member by a connecting member, the connecting member includes an abutting portion abutting against the movable member, and a connecting portion screwed to the output member, and the connecting portion is disposed on the movable member in a penetrating manner.

8. The cushion device of claim 7, wherein a double-stack self-locking gasket is installed between the movable member and the abutting portion in a clamped manner along an axial direction of the connecting portion.

9. The cushioning device of claim 1, wherein said first resilient member and said second resilient member are each rectangular compression springs.

10. A cushioning device as claimed in claim 1, wherein an end of said output member remote from said movable member is provided with a knuckle bearing.