Bidirectional cylinder type actuator

Abstract

The utility model provides a bidirectional cylinder type actuator, relates to the technical field of driving equipment, and solves the technical problem that bidirectional driving cannot be realized in the prior art. The device comprises a cylinder barrel, a gas chamber partition plate, a first piston part, a second piston part and a gas generating part, the cylinder barrel is divided into two piston cavities by the gas chamber partition plate, the two piston cavities are communicated through a through hole in the gas chamber partition plate, and the first piston part and the second piston part are arranged in the two piston cavities in the two ends of the cylinder barrel in a sliding mode respectively. The gas generating part is arranged in one piston cavity and can generate gas and push the first piston part and the second piston part to stretch out. Bidirectional driving is achieved through the arrangement mode of the double piston parts, and therefore the requirement of a user for bidirectional driving is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to drive equipment technical field especially is related to a bidirectional cylinder type actuator. BACKGROUND

[0002] The commonly seen built-in gas generator as the power of the cylinder type actuator is usually one-way working, but this kind of actuator can only satisfy one-way driving use, cannot be used for some bidirectional driving especially bidirectional driving in turn, and cannot satisfy the demand of the user. INVENTION CONTENTS

[0003] The utility model discloses a bidirectional cylinder type actuator, solve the prior art cannot bidirectional drive technical problem, the preferred technical scheme of the many technical schemes provided by the utility model can produce the many technical effects detailed in the following.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] The utility model discloses a bidirectional cylinder type actuator, including cylinder, air chamber baffle, first piston part, second piston part and gas generating part, the cylinder is divided into two piston cavities by the air chamber baffle, two piston cavities are communicated through the through -hole on the air chamber baffle, the first piston part and the second piston part are slidably arranged in two piston cavities of the cylinder two ends respectively, the gas generating part is arranged in one of the piston cavities, the gas generating part can produce gas and push the first piston part and the second piston part and extend.

[0006] Preferably, it further includes a sliding valve body, the sliding valve body is slidably arranged in the piston cavity of the first piston part, the gas generating part is arranged in the first piston part, one end of the first piston part towards the air chamber baffle has the open mouth, one end of the sliding valve body can be against the air chamber baffle and close the through -hole, the other end of the sliding valve body sets up the first limit part, and the piston on the first piston part can be against the first limit part and drive the sliding valve body to move.

[0007] Preferably, the sliding valve body is cylindrical structure, the first piston part and the cylindrical body part of the sliding valve body are slidably connected, one end of the sliding valve body towards the air chamber baffle has the air hole, one end of the sliding valve body away from the air chamber baffle is end wall, the end wall is provided with slide hole, the first piston part and the slide hole are slidably connected, and the piston can be against the end wall.

[0008] Preferably, the first piston part comprises a first piston barrel and a piston, the gas generating part is arranged in the extending end of the first piston barrel, and the sliding end of the first piston barrel is an open end and the outer wall of which is provided with the piston.

[0009] Preferably, the gas generating part comprises an electric starter and a gas generating agent, the electric starter is arranged in the first piston barrel close to the extending end, the open end of the first piston barrel is provided with a sealing film, the first piston barrel and the sealing film form a filling cavity, the gas generating agent is filled in the filling cavity, and the electric starter extends into the filling cavity.

[0010] Preferably, the second piston part comprises a second piston barrel and a piston rod, the second piston barrel is slidably connected with the piston cavity, and one end of the second piston barrel towards the gas chamber partition plate is an open end.

[0011] Preferably, the cylinder barrel is provided with a baffle plate at one end of the first piston part, the baffle plate has a mounting hole in the middle portion thereof and is slidably connected with the first piston part, and an elastic pressure cap is sleeved outside the cylinder barrel, the extending end of the first piston part is provided with a limiting groove, the elastic pressure cap can extend into the limiting groove, and the material of the elastic pressure cap is an elastic material.

[0012] Preferably, the number of the through holes is multiple and the through holes are arranged along the circumference of the gas chamber partition plate.

[0013] The above technical solution has at least the following beneficial effects:

[0014] The bidirectional pneumatic cylinder actuator comprises a cylinder barrel, a gas chamber partition plate, a first piston part, a second piston part and a gas generating part, the cylinder barrel is divided into two piston cavities by the gas chamber partition plate, the two piston cavities are communicated through the through holes on the gas chamber partition plate, the first piston part and the second piston part are slidably arranged in the two piston cavities at two ends of the cylinder barrel, the gas generating part is arranged in one of the piston cavities, and the gas generating part can generate gas and push the first piston part and the second piston part to extend. In this way, the bidirectional driving can be realized by arranging two piston parts at two ends, so that the bidirectional driving of the user can be met.

[0015] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 is a schematic diagram of a bidirectional pneumatic cylinder actuator structure provided by the embodiment of the present application, in which the second piston part is of a double telescopic structure;

[0018] Figure 2 is a schematic diagram of a bidirectional pneumatic cylinder actuator structure provided by the embodiment of the present application, in which the second piston part is of a single telescopic structure;

[0019] Figure 3 is a schematic diagram of a gas chamber partition structure provided by the embodiment of the present application;

[0020] Figure 4 is a schematic diagram of a gas chamber partition cross-section structure provided by the embodiment of the present application;

[0021] Figure 5 is a schematic diagram of a sliding valve body structure provided by the embodiment of the present application;

[0022] Figure 6 is a schematic diagram of a first piston part structure provided by the embodiment of the present application;

[0023] Figure 7 is a schematic diagram of a bidirectional pneumatic cylinder actuator action change structure provided by the embodiment of the present application.

[0024] In the figure, 1 is a cylinder barrel; 2 is a gas chamber partition; 3 is a through hole; 4 is a sliding valve body; 5 is an open port; 6 is a first limiting part; 7 is a piston; 8 is a vent hole; 9 is a first piston barrel body; 10 is an electric starter; 11 is a gas generating agent; 12 is a second piston barrel body; 13 is a piston rod; 14 is a baffle; 15 is an elastic pressure cap; and 16 is a limiting groove. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0026] The specific embodiment of the utility model provides a kind of bidirectional cylinder type actuator, it mainly includes cylinder 1, air chamber baffle 2, first piston part, second piston part and gas generating part, wherein cylinder 1 is divided into two piston cavities by air chamber baffle 2, cylinder 1 is cylindrical body structure, as shown in the attached Figure 1 And as shown in the attached Figure 2 Air chamber baffle 2 divides cylinder 1 into two cylindrical piston cavities, two piston cavities are communicated by through hole 3 on air chamber baffle 2, first piston part and second piston part are slidably arranged in two piston cavities at the two ends of cylinder 1 respectively, gas generating part is arranged in one of piston cavities, gas generating part can generate gas and push first piston part and second piston part to extend, so that the gas generated by gas generating part can fill two piston cavities, and simultaneously push first piston part and second piston part to extend, so that bidirectional driving can be realized, and the demand of bidirectional driving is met.

[0027] In the specific embodiment of the present application, a sliding valve body 4 is further included, the sliding valve body 4 is slidably arranged in the piston cavity of the first piston part, the gas generating part is arranged in the first piston part, one end of the first piston part towards the air chamber baffle 2 has an open port 5, the gas generating part can be arranged inside the first piston part, so that the gas can be directed towards the air chamber baffle 2, thereby reversely pushing the first piston part to move, one end of the sliding valve body 4 can abut against the air chamber baffle 2 and close the through hole 3, so that the through hole 3 can be temporarily closed by the sliding valve body 4, so that the gas will first fill the piston cavity where the first piston part is located, the other end of the sliding valve body 4 is provided with a first limiting portion 6, a piston 7 on the first piston part can abut against the first limiting portion 6 and drive the sliding valve body 4 to move, the first piston part will move to the left under the action of the gas, and at the same time, the piston 7 on the first piston part will gradually approach the first limiting portion 6, when the piston 7 abuts against the first limiting portion 6 and continues to move, the sliding valve body 4 will move to the left, at this time, the part of the sliding valve body 4 that closes the through hole 3 will be separated from the air chamber baffle 2, so that the through hole 3 communicates the two piston cavities, at this time, the gas will enter the piston cavity where the second piston part is located on the right side, thereby pushing the second piston part to move to the right. So in the present application, the sequential action mode of the first piston part and the second piston part is realized by setting the sliding valve body 4, further meeting the demand for such action.

[0028] In some embodiments, the sliding valve body 4 is a cylindrical structure, the first piston part and the cylindrical part of the sliding valve body 4 are slidably connected, one end of the sliding valve body 4 towards the air chamber baffle 2 has a gas passage hole 8, the gas passage hole 8 is opposite to the open port 5 of the first piston part, so that the gas can pass through the gas passage hole 8, one end of the sliding valve body 4 away from the air chamber baffle 2 is an end wall, the end wall is provided with a sliding hole, the first piston part and the sliding hole are slidably connected, the piston 7 can abut against the end wall, the periphery of the sliding hole is an annular end wall, the piston 7 is also an annular piston structure, so that it can be limited from the entire annular surface.

[0029] In some embodiments, the first piston part comprises a first piston barrel 9 and a piston 7, a gas generating part is arranged in the extending end of the first piston barrel 9, the sliding end of the first piston barrel 9 is the open end 5 and the outer wall of the first piston barrel 9 is provided with the piston 7, the gas generating part specifically comprises an electric starter 10 and a gas generating agent 11, the electric starter 10 is arranged in the first piston barrel 9 close to the extending end, the open end 5 of the first piston barrel 9 is provided with a sealing film, the first piston barrel 9 and the sealing film form a filling cavity, the gas generating agent 11 is filled in the filling cavity, the electric starter 10 extends into the filling cavity, the gas generating part is started by an electric signal, when the gas generating part receives the starting electric signal, the gas generating agent 11 in the gas generating part immediately works and generates a certain amount of gas, thereby driving the piston at both ends to work.

[0030] In some embodiments, as shown in the accompanying drawings, Figure 1 the second piston part comprises a second piston barrel 12 and a piston rod 13, the second piston barrel 12 is slidably connected with the piston cavity, one end of the second piston barrel 12 towards the air chamber partition plate 2 is an open end, the piston rod 13 is slidably connected with the second piston barrel 12, so that a longer driving distance can be achieved while ensuring that the entire device is relatively short, thereby reducing the space occupied by the equipment.

[0031] In some embodiments, as shown in the accompanying drawings, Figure 2 the second piston part comprises a piston rod, so that the driving can also be achieved.

[0032] In some embodiments, the device further comprises a baffle 14 and an elastic pressure cap 15, the baffle 14 is arranged in one end of the cylinder barrel 1 where the first piston part is arranged, the baffle 14 has a mounting hole in the middle part for slidably connecting with the first piston part, the baffle 14 is used to close the left end of the cylinder barrel 1 for mounting the first piston part, the elastic pressure cap 15 is sleeved outside the cylinder barrel 1, the extending end of the first piston part has a limiting groove 16, the limiting groove 16 is an annular groove along the circumference of the first piston part, the elastic pressure cap 15 can extend into the limiting groove 16, the material of the elastic pressure cap 15 is elastic material, the elastic pressure cap 15 can temporarily limit the movement of the first piston part to the left, and the energy generated after the gas generating part is started can make the first piston part escape from the limitation of the elastic pressure cap 15 and extend out.

[0033] In some embodiments, as shown in the accompanying drawings, Figure 3 and Figure 4 the air chamber partition plate 2 can be a circular plate structure, the number of through holes 3 is multiple and arranged along the circumference of the air chamber partition plate 2, and the sliding valve body 4 is also a cylindrical structure and has an annular plate surface at one end towards the air chamber partition plate 2, so as to be able to close the multiple through holes 3.

[0034] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", "some examples" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0035] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A bidirectional pneumatic cylinder actuator, characterized by The cylinder includes a cylinder barrel, a gas chamber partition, a first piston part, a second piston part and a gas generating part, the cylinder barrel is divided into two piston cavities by the gas chamber partition, the two piston cavities are communicated through a through hole on the gas chamber partition, the first piston part and the second piston part are respectively slidably arranged in the two piston cavities at two ends of the cylinder barrel, and the gas generating part is arranged in one of the piston cavities and can generate gas to push the first piston part and the second piston part to extend.

2. The dual-rod gas cylinder actuator according to claim 1, characterized in that The cylinder further includes a sliding valve body, the sliding valve body is slidably arranged in the piston cavity of the first piston part, the gas generating part is arranged in the first piston part, one end of the first piston part towards the gas chamber partition has an open port, one end of the sliding valve body can abut against the gas chamber partition and close the through hole, and the other end of the sliding valve body is provided with a first limiting part, and the piston on the first piston part can abut against the first limiting part and drive the sliding valve body to move.

3. The dual-rod gas cylinder actuator according to claim 2, characterized in that The sliding valve body is a cylindrical structure, the first piston part is slidably connected with a barrel part of the sliding valve body, one end of the sliding valve body towards the gas chamber partition has a gas passage hole, the other end of the sliding valve body away from the gas chamber partition is an end wall, the end wall is provided with a sliding hole, the first piston part is slidably connected with the sliding hole, and the piston can abut against the end wall.

4. The dual rod gas cylinder actuator of claim 1, wherein, The first piston part includes a first piston barrel and a piston, the gas generating part is arranged in an extending end of the first piston barrel, a sliding end of the first piston barrel is an open port, and the piston is arranged on an outer wall of the open port.

5. The dual-rod gas cylinder actuator of claim 4, wherein, The gas generating part includes an electric starter and a gas generating agent, the electric starter is arranged in the first piston barrel close to the extending end, the open port of the first piston barrel is provided with a sealing film, the first piston barrel and the sealing film form a filling cavity, the gas generating agent is filled in the filling cavity, and the electric starter extends into the filling cavity.

6. The dual gas cylinder actuator of claim 1, wherein The second piston part includes a second piston barrel and a piston rod, the second piston barrel is slidably connected with the piston cavity, and one end of the second piston barrel towards the gas chamber partition is an open end.

7. The dual rod gas cylinder actuator of claim 1, wherein, The cylinder further includes a baffle and an elastic pressing cap, the cylinder is provided with the baffle in one end of the first piston part, the baffle is provided with a mounting hole slidably connected with the first piston part in the middle, the elastic pressing cap is sleeved outside the cylinder, the extending end of the first piston part is provided with a limiting groove, the elastic pressing cap can extend into the limiting groove, and the material of the elastic pressing cap is an elastic material.

8. The dual rod gas cylinder actuator of claim 1, wherein, The number of the through holes is multiple and the through holes are arranged along the circumference of the gas chamber partition.

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