CN213929250U

CN213929250U - Multistage locking formula air spring

Info

Publication number: CN213929250U
Application number: CN202022976756.3U
Authority: CN
Inventors: 孙肃松
Original assignee: Taizhou Chengxin Pneumatic Equipment Co ltd
Current assignee: Taizhou Chengxin Pneumatic Equipment Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-08-10
Anticipated expiration: 2030-12-08

Abstract

The utility model discloses a multistage locking formula air spring relates to elastic element technical field. The utility model discloses a cylinder body, piston rod and piston body, the draw-in groove has been seted up on the lateral wall of cylinder body, and be equidistant seting up along the cylinder body between the draw-in groove, the inside swing joint of cylinder body has the piston body, be provided with no pole chamber in the cylinder body of piston body both sides respectively and have the pole chamber, one side swing joint that the piston body is close to there is the pole chamber has the piston rod, the piston rod is located the inside one end of piston body and the inside second magnetic path fixed connection of piston body, the second magnetic path is kept away from between one side of piston rod and the piston body to have been supported the second spring. The utility model discloses a plurality of draw-in grooves are seted up to equidistant on the inside wall of cylinder body to set up the inserted block in the inside of piston body, can drive the inserted block card through first spring and go into in the draw-in groove, and then lock the position of piston body, can realize the multistage locking of air spring, make the use of air spring can be more nimble.

Description

Multistage locking formula air spring

Technical Field

The utility model belongs to the technical field of elastic element, especially, relate to a multistage locking formula air spring.

Background

The gas spring is an industrial accessory which can play a role in supporting, buffering, braking, height adjustment, angle adjustment and the like. It is composed of the following parts: the device comprises a pressure cylinder, a piston rod, a piston body, a sealing guide sleeve, filler (inert gas or oil-gas mixture), an in-cylinder control element, an out-cylinder control element (a controllable gas spring), a joint and the like. The principle is that inert gas or oil-gas mixture is filled in a closed pressure cylinder, so that the pressure in a cavity is several times or dozens of times higher than the atmospheric pressure, the movement of a piston rod is realized by utilizing the pressure difference generated by the fact that the cross section area of the piston rod is smaller than that of the piston body, the traditional gas spring has single stroke and cannot realize multi-stage locking, each type of gas spring corresponds to one telescopic length and distance, and the limitation is large, so that an improved technology is urgently needed in the market to solve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multistage locking formula air spring is through equidistant a plurality of draw-in grooves of seting up on the inside wall of cylinder body to set up the inserted block in the inside of piston body, can drive the inserted block card through first spring and go into in the draw-in groove, and then lock the position of piston body, can realize the multistage locking of air spring, make the use of air spring can be more nimble, solved current air spring stroke singleness, can't realize multistage locking, the great problem of limitation.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a multistage locking formula air spring, including cylinder body, piston rod and piston body, the draw-in groove has been seted up on the lateral wall of cylinder body, and is equidistant seting up along the cylinder body between the draw-in groove, the inside swing joint of cylinder body has the piston body, be provided with no pole chamber and have the pole chamber in the cylinder body of piston body both sides respectively, one side swing joint that the piston body is close to there is the pole chamber has the piston rod, the piston rod is located the inside one end of piston body and the inside second magnetic path fixed connection of piston body, the second magnetic path is kept away from and is had the second spring to butt joint between one side of piston rod and the piston body, the upper portion and the lower part symmetry swing joint of piston body have first magnetic path, first magnetic path passes through the connecting rod and is connected with the internal inserted block of piston, butt joint has first spring between inserted block and the piston body.

Furthermore, an annular groove is formed in the position, close to the rodless cavity, of the periphery of the piston body, and a sealing ring is clamped inside the annular groove.

Furthermore, a middle groove is formed in the middle position inside the piston body, the second magnetic block is located in the middle groove, the second magnetic block slides along the middle groove, and the second spring is located in the middle groove.

Furthermore, side grooves are symmetrically formed in the piston body above and below the middle groove and communicated with the inside of the middle groove, the first magnetic block slides along the inside of the side grooves, and one side, close to the second magnetic block, of the first magnetic block is magnetically attracted with the second magnetic block.

Furthermore, the top and the bottom of the piston body are symmetrically provided with sliding grooves, the inserting block is positioned in the sliding grooves and slides along the sliding grooves, and the inserting block is smaller than the caliber of the clamping groove.

Furthermore, one end of the connecting rod is fixed with the tail end of the inserting block, the other end of the connecting rod is fixed with one side, close to the inserting block, of the first magnetic block, the first spring is sleeved outside the connecting rod, and the first spring is located in the sliding groove.

The utility model discloses following beneficial effect has:

the utility model discloses a set up the draw-in groove, the inserted block, first magnetic path, the second magnetic path, first spring and second spring, through applying pressure to the piston rod, make the piston rod drive the second magnetic path and move to between two first magnetic paths, and through attracting two first magnetic paths, can drive two inserted blocks and move towards the inside of spout, make the piston body can move towards the direction of no pole chamber, through removing external force, under the effect of second spring, the position of second magnetic path recovers, drive the inserted block and move towards the outside of spout simultaneously under the effect of first spring, make the inserted block can block in the draw-in groove, and then lock the position of piston body, through a plurality of draw-in grooves that equidistant setting on the inside wall of cylinder body, can realize the multistage locking of air spring, make the use of air spring can be more nimble, break away from the limitation of air spring, it is single to have solved current air spring stroke, the problem of large limitation because multi-stage locking cannot be realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front sectional view of the present invention;

FIG. 2 is an enlarged view of the structure A shown in FIG. 1 according to the present invention;

fig. 3 is a side sectional view of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a cylinder body; 101. a rodless cavity; 102. a rod cavity; 103. a card slot; 2. a piston rod; 3. a piston body; 301. a seal ring; 302. an intermediate tank; 303. a side groove; 304. an annular groove; 305. a chute; 4. inserting a block; 5. a first spring; 6. a second spring; 7. a connecting rod; 8. a first magnetic block; 9. a second magnetic block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention relates to a multistage locking type gas spring, which comprises a cylinder body 1, a piston rod 2 and a piston body 3, wherein a slot 103 is formed on a side wall of the cylinder body 1, the slot 103 is formed at equal intervals along the cylinder body 1, the cylinder body 1 is movably connected with the piston body 3, a rodless cavity 101 and a rod cavity 102 are respectively arranged in the cylinder body 1 at two sides of the piston body 3, an annular groove 304 is formed at a position near the rodless cavity 101 at the periphery of the piston body 3, a sealing ring 301 is clamped in the annular groove 304, oil leakage inside the cylinder body 1 can be avoided by the sealing ring 301, the piston rod 2 is movably connected to one side of the piston body 3 near the rod cavity 102, one end of the piston rod 2 inside the piston body 3 is fixedly connected with a second magnetic block 9 inside the piston body 3, a second spring 6 is abutted between one side of the second magnetic block 9 far away from the piston rod 2 and the piston body 3, the middle position inside the piston body 3 is provided with a middle groove 302, the second magnet 9 is positioned in the middle groove 302, the second magnet 9 slides along the middle groove 302, the second spring 6 is positioned in the middle groove 302, when the external pressure acts on the piston rod 2, the piston rod 2 drives the second magnet 9 to slide along the middle groove 302 and compress the second spring 6, the upper part and the lower part of the piston body 3 are symmetrically and movably connected with a first magnet 8, the first magnet 8 is connected with an inserting block 4 in the piston body 3 through a connecting rod 7, a first spring 5 is abutted between the inserting block 4 and the piston body 3, side grooves 303 are symmetrically arranged in the piston body 3 above and below the middle groove 302, the side grooves 303 are communicated with the inside of the middle groove 302, the first magnet 8 slides along the inside of the side grooves 303, one side of the first magnet 8 close to the second magnet 9 is magnetically attracted with the second magnet 9, when the second magnet 9 moves between two first magnet 8, at the moment, the first magnetic block 8 is attracted by the second magnetic block 9 to drive the first magnetic block 8 to move towards the direction of the second magnetic block 9, the first magnetic block 8 moves to drive the connecting rod 7 to pull the insert 4 to move and compress the first spring 5, at the moment, the piston body 3 can move towards the direction of the rodless cavity 101, the top and the bottom of the piston body 3 are symmetrically provided with sliding grooves 305, the insert 4 is positioned in the sliding groove 305, the insert 4 slides along the sliding groove 305, the diameter of the insert 4 is smaller than that of the clamping groove 103, one end of the connecting rod 7 is fixed with the tail end of the insert 4, the other end of the connecting rod 7 is fixed with one side of the first magnetic block 8 close to the insert 4, the first spring 5 is sleeved outside the connecting rod 7, the first spring 5 is positioned in the sliding groove 305, after the piston body 3 moves to a proper position, the pressure on the piston rod 2 is smaller than the elastic force of the second spring 6 at the moment, the second spring 6 drives the second magnetic block 9 to move along the middle groove 302 in the opposite direction, at this time, the attractive force of the first magnetic block 8 by the second magnetic block 9 is smaller than the elastic force of the first spring 5, at this time, the first spring 5 drives the insert block 4 to move outwards along the sliding groove 305, the insert block 4 is driven to move to the position of the clamping groove 103 under the pushing of the gas in the cylinder body 1, so that the insert block 4 is clamped in the clamping groove 103 to lock the position of the piston body 3, when the piston body 3 needs to move towards the rod cavity 102, at this time, only the external force is needed to apply pressure to the piston rod 2, so that the second magnetic block 9 moves between the two first magnetic blocks 8, the insert block 4 is withdrawn from the clamping groove 103, the pushing force of the gas in the cylinder body 1 to the piston body 3 is larger than the pressure applied to the piston rod 2 from the outside, and at this time, the piston body 3 can move towards the rod cavity 102 under the pushing of the gas in the cylinder body 1.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only the preferred embodiment of the present invention, and the present invention is not limited thereto, any technical solution recorded in the foregoing embodiments is modified, and some technical features are replaced by equivalent, all belonging to the protection scope of the present invention.

Claims

1. The utility model provides a multistage locking formula air spring, includes cylinder body (1), piston rod (2) and piston body (3), its characterized in that: the cylinder is characterized in that the side wall of the cylinder body (1) is provided with clamping grooves (103), the clamping grooves (103) are arranged at equal intervals along the cylinder body (1), the inside of the cylinder body (1) is movably connected with a piston body (3), the cylinder body (1) at two sides of the piston body (3) is respectively provided with a rodless cavity (101) and a rod cavity (102), one side of the piston body (3) close to the rod cavity (102) is movably connected with a piston rod (2), one end of the piston rod (2) located inside the piston body (3) is fixedly connected with a second magnetic block (9) inside the piston body (3), one side of the second magnetic block (9) far away from the piston rod (2) is abutted against a second spring (6) with the piston body (3), the upper part and the lower part of the piston body (3) are symmetrically and movably connected with first magnetic blocks (8), and the first magnetic blocks (8) are connected with inserting blocks (4) in the piston body (3) through connecting rods (7), a first spring (5) is connected between the insert block (4) and the piston body (3) in an abutting mode.

2. The multi-stage locking gas spring as claimed in claim 1, wherein an annular groove (304) is formed on the periphery of the piston body (3) at a position close to the rodless chamber (101), and a seal ring (301) is clamped inside the annular groove (304).

3. The multi-stage locking gas spring as claimed in claim 1, wherein a middle groove (302) is formed in the piston body (3) at a middle position, the second magnetic block (9) is located in the middle groove (302), the second magnetic block (9) slides along the middle groove (302), and the second spring (6) is located in the middle groove (302).

4. The multi-stage locking type gas spring as claimed in claim 3, wherein side grooves (303) are symmetrically formed in the piston body (3) above and below the middle groove (302), the side grooves (303) are communicated with the inside of the middle groove (302), the first magnetic block (8) slides along the inside of the side grooves (303), and one side, close to the second magnetic block (9), of the first magnetic block (8) is magnetically attracted to the second magnetic block (9).

5. The multi-stage locking gas spring as claimed in claim 1, wherein the top and bottom of the piston body (3) are symmetrically provided with sliding grooves (305), the insert (4) is located in the sliding grooves (305), the insert (4) slides along the sliding grooves (305), and the insert (4) is smaller than the caliber of the clamping groove (103).

6. The multi-stage locking type gas spring as claimed in claim 1, wherein one end of the connecting rod (7) is fixed to the tail end of the insert block (4), the other end of the connecting rod (7) is fixed to one side of the first magnetic block (8) close to the insert block (4), the first spring (5) is sleeved outside the connecting rod (7), and the first spring (5) is located in the sliding groove (305).