Gas spring with multiple sections of grooves

Abstract

The utility model relates to a multi-section groove gas spring which comprises a cylinder barrel and a piston rod. One end of the piston rod extends into the cylinder barrel, a plurality of air guide grooves are formed in the surface of the cylinder barrel, a butt joint piece is installed at the end point position, extending into the cylinder barrel, of the piston rod in a butt joint mode, and a piston seat is arranged on the outer side of the butt joint piece in a sleeving mode; a guide sleeve is arranged on the outer side of the end, close to the butt-joint piece, of the piston rod. And a groove is formed in the surface of the piston seat. The multiple sections of gas guide grooves are formed in the cylinder barrel, when the piston seat reaches the position between the two sections of gas guide grooves, nitrogen at the two ends of the piston seat cannot circulate due to the fact that no gas guide groove exists, the piston rod stops stretching at the moment, and intermittent hovering of the piston rod is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of gas springs, in particular to a multi-segment groove gas spring. Background Art

[0002] At present, when the gas springs on the market are used, the piston rod can only be fully extended or retracted when it is extended and retracted in the piston sleeve. This leads to certain limitations in the use of gas springs, and they cannot be restricted at a specified angle.

[0003] In view of this, a multi-segment groove gas spring is proposed. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the following technical problems in the prior art: when the gas springs currently on the market are used, the piston rod can only be fully extended or retracted when it is retracted in the piston sleeve, which leads to certain limitations in the use of the gas spring and cannot be restricted at a specified angle.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a multi-segment groove gas spring, comprising a cylinder and a piston rod;

[0007] One end of the piston rod extends into the cylinder, a plurality of air guide grooves are provided on the surface of the cylinder, a docking piece is installed at the end position where the piston rod extends into the cylinder, and a piston seat is sleeved on the outer side of the docking piece;

[0008] A guide sleeve is arranged on the outer side of one end of the piston rod close to the docking piece;

[0009] A groove is formed on the surface of the piston seat.

[0010] As a preferred technical solution for the multi-segment groove gas spring, a frame is further provided on the outer side of one end of the piston rod extending into the cylinder, wherein the frame is used to prevent one end of the piston rod from completely escaping from the cylinder.

[0011] As a preferred technical solution for the multi-segment groove gas spring, a seal is further provided on the outer side of one end of the piston rod extending into the cylinder, and the seal is located between the frame and the guide sleeve.

[0012] As an optimal technical solution for the multi-segment groove gas spring, a slot is provided on the outer side of the guide sleeve, and a protrusion is provided corresponding to the position of the cylinder near the slot. The protrusion and the slot are in a snap-connected relationship, so that the piston rod and the cylinder have a limiting effect when they are fully stretched.

[0013] As a preferred technical solution for the multi-segment groove gas spring, the number of the air guide grooves is set to three, wherein the distance between two air guide grooves can be set according to actual needs, and the length of the corresponding air guide groove can also be set according to actual needs.

[0014] As a preferred technical solution for the multi-segment groove gas spring, a sealing ring is provided in the groove.

[0015] The beneficial effect of the present invention is that multiple air guide grooves are opened in the cylinder. When the piston seat reaches between two air guide grooves, the nitrogen at both ends of the piston seat cannot flow due to the absence of the air guide grooves. At this time, the piston rod stops extending, thereby achieving intermittent suspension of the piston rod.

[0016] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a cutaway schematic diagram of the present invention.

[0020] Figure 3 It is a schematic diagram of the piston seat of the present invention.

[0021] Figure numerals: 100, cylinder; 101, air guide groove; 200, piston rod; 201, skeleton; 202, guide sleeve; 203, sealing member; 204, piston seat; 205, groove; 206, sealing ring; 207, docking member; 208, slot; 209, protrusion. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0026] Example

[0027] Reference Figures 1 to 3 , is an embodiment of the present invention, which provides a multi-segment groove gas spring, including a cylinder 100 and a piston rod 200, wherein the number of gas guide grooves 101 is set to three, wherein the distance between two gas guide grooves 101 can be set according to actual needs, and the length of the corresponding gas guide groove 101 can also be set according to actual needs; one end of the piston rod 200 extends into the cylinder 100, and a plurality of gas guide grooves 101 are provided on the surface of the cylinder 100, and a docking piece 207 is installed at the end position where the piston rod 200 extends into the cylinder 100, and a piston seat 204 is sleeved on the outer side of the docking piece 207, and a skeleton 201 is also provided on the outer side of one end of the piston rod 200 extending into the cylinder 100, wherein the skeleton 201 is used to prevent one end of the piston rod 200 from completely separating from the cylinder 100;

[0028] Specifically, a guide sleeve 202 is provided on the outer side of one end of the piston rod 200 close to the docking piece 207, and a seal 203 is also provided on the outer side of one end of the piston rod 200 extending into the cylinder 100. The seal 203 is located between the frame 201 and the guide sleeve 202. A card slot 208 is provided on the outer side of the guide sleeve 202. A protrusion 209 is provided at a position of the cylinder 100 close to the card slot 208. The protrusion 209 and the card slot 208 are in a card connection relationship, so that the piston rod 200 and the cylinder 100 have a limiting effect in a fully stretched state.

[0029] Specifically, a groove 205 is formed on the surface of the piston seat 204 ; a sealing ring 206 is disposed in the groove 205 .

[0030] Through this implementation, it can be achieved that: multiple sections of air guide grooves 101 are opened in the cylinder 100, and hovering is achieved by utilizing the intermittent air guide grooves 101. When the piston seat 204 reaches between two sections of the air guide grooves 101, since there are no air guide holes, the nitrogen at both ends of the piston seat 204 cannot circulate. At this time, the piston rod 200 stops extending. When it is necessary to continue extending, it is only necessary to drag the piston rod 200, and the piston seat 204 is stretched and dragged into the air guide groove 101 by utilizing the compressibility of the gas, and the gas resumes circulation, and the piston rod 200 continues to extend.

[0031] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A multi-segment groove gas spring, characterized in that: It comprises a cylinder (100) and a piston rod (200); One end of the piston rod (200) extends into the cylinder barrel (100), a plurality of air guide grooves (101) are provided on the surface of the cylinder barrel (100), a docking piece (207) is docked and installed at the end position where the piston rod (200) extends into the cylinder barrel (100), and a piston seat (204) is sleeved on the outer side of the docking piece (207); A guide sleeve (202) is disposed on the outer side of one end of the piston rod (200) close to the docking piece (207); A groove (205) is formed on the surface of the piston seat (204).

2. The multi-segment groove gas spring according to claim 1, characterized in that: A frame (201) is also provided on the outer side of one end of the piston rod (200) extending into the cylinder barrel (100).

3. The multi-segment groove gas spring according to claim 1, characterized in that: A sealing member (203) is also provided on the outer side of one end of the piston rod (200) extending into the cylinder barrel (100), and the sealing member (203) is located between the frame (201) and the guide sleeve (202).

4. The multi-segment groove gas spring according to claim 1, characterized in that: A clamping groove (208) is provided on the outer side of the guide sleeve (202), and a protrusion (209) is provided on the cylinder barrel (100) at a position close to the clamping groove (208), and the protrusion (209) and the clamping groove (208) are in a clamping connection relationship.

5. The multi-segment groove gas spring according to claim 1, characterized in that: The number of the air guide grooves (101) is three.

6. The multi-segment groove gas spring according to claim 1, characterized in that: A sealing ring (206) is provided in the groove (205).

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