Gas spring

Abstract

The utility model belongs to the technical field of gas springs, and discloses a gas spring which comprises a cylinder body, a piston rod and a limiting piece, the piston rod is connected with the cylinder body in a sliding mode, the ends, away from each other, of the cylinder body and the piston rod are provided with limiting parts used for fixing the limiting piece, and the limiting piece is used for fixing the piston rod to enable the piston rod to keep a compressed state. The limiting part is a limiting unit, the limiting piece is a limiting cover, bending parts are arranged on the two sides of the limiting cover in the length direction, the limiting unit abuts against the bending parts, the limiting cover is used for fixing the piston rod through cooperation of the bending parts and the limiting unit, the limiting cover is matched with the limiting part, the annular cover wraps the whole air spring structure, and the piston rod is directly fixed in a compressed state. And external physical impact can be avoided, and a more stable fixing effect is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of gas spring packaging, and particularly to a gas spring. Background Art

[0002] As a mechanical component widely used in the industrial field, the gas spring has multiple functions such as support, buffering, braking, height adjustment, and angle adjustment. Traditional gas springs are mostly in an extended state during transportation, which not only increases the occupied space but also leads to an increase in transportation costs. Especially in international container transportation, the waste of volume directly affects economic benefits. Therefore, to solve the problem of large occupied space of gas springs during transportation, the prior art has proposed a solution to fix the piston rod through a connecting rod and a limiting part to keep the gas spring in a compressed state. This technology has reduced the transportation volume of the gas spring to a certain extent and lowered the transportation cost.

[0003] However, in the design of the prior art CN218882871U, multiple limiting components are used in cooperation to fix the piston rod. Although this structure achieves the purpose, there are still some deficiencies, such as insufficient fixation, resulting in the problem of component detachment during transportation.

[0004] Therefore, a gas spring is proposed to solve the above problems. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a gas spring, aiming to solve the problem that the fixing method of the piston rod of the existing gas spring is not stable, resulting in component detachment during transportation.

[0006] To achieve the above utility model purpose, the utility model proposes a gas spring, which includes a cylinder body and a piston rod. The piston rod is slidably connected to the cylinder body, and further includes a limiting part, and the limiting part is used to fix the piston rod to keep the piston rod in a compressed state.

[0007] The limiting part is a limiting cover, and the limiting cover is made of flexible material. The maximum telescopic length of the gas spring is greater than the length of the limiting cover, and the minimum telescopic length of the gas spring is less than or equal to the length of the bent limiting cover.

[0008] Further, it further includes a limiting portion, the limiting portion is a groove, and the grooving directions of the two grooves are the same. The limiting part includes a connecting rod, and connecting parts are arranged at both ends of the connecting rod. The connecting parts are located in the grooves and are used to fix the piston rod.

[0009] Further, the limiting portion is a positioning hole, and the opening directions of the two positioning holes are the same. The limiting part includes a fixing band, and the fixing band is connected end to end through the positioning holes to fix the piston rod.

[0010] Furthermore, the limiting cover includes a connecting portion and a locking portion. The connecting portion is closely attached to the locking portion, and the upper surfaces of the connecting portion and the locking portion are located on the same plane.

[0011] Furthermore, the connecting portion is provided with a bending portion, the end point of the locking portion abuts against the bending portion, and the lower surfaces of the connecting portion and the locking portion are located on the same plane.

[0012] Furthermore, clamping grooves are provided on both the upper surface of the connecting portion and the lower surface of the locking portion, facilitating the operator to disassemble the limiting cover.

[0013] Beneficial effects:

[0014] For a gas spring of the present utility model, when the gas spring is factory-packaged, the gas spring is first extruded by a press to make the piston rod in a compressed state, so as to reduce the length of the gas spring, improve the space utilization rate during transportation, increase the transportation quantity in the in-place space, and reduce the transportation cost; through the cooperation of the limiting cover and the limiting portion, the annular cover is sleeved outside the cylinder body and the piston rod of the gas spring. By wrapping the entire gas spring structure, the piston rod is directly fixed in the compressed state. The annular cover can not only fix the piston rod, but also protect the overall structure of the gas spring, avoid external physical impacts, provide a more stable fixing effect, and can more effectively prevent the piston rod from loosening or shifting due to vibration or collision during transportation, so that the gas spring maintains the compressed state throughout the transportation process. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of a gas spring according to an embodiment of the present utility model;

[0016] Figure 2 is a schematic diagram of the structure of a gas spring with the limiting cover hidden according to an embodiment of the present utility model;

[0017] Figure 3 is a schematic diagram of the structure of the limiting cover of a gas spring according to an embodiment of the present utility model;

[0018] Figure 4 is a partially enlarged view of the limiting cover of a gas spring according to an embodiment of the present utility model;

[0019] Wherein:

[0020] 100, cylinder body; 200, piston rod; 300, limiting cover; 310, bending portion; 400, limiting unit; 500, groove; 600, connecting portion; 610, bending portion; 700, locking portion; 800, clamping groove;

[0021] The realization, functional characteristics, and advantages of the object of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation mode

[0022] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0026] Refer to Figures 1 to 4, Embodiment: A gas spring includes a cylinder body 100 and a piston rod 200. The piston rod 200 is slidably connected to the cylinder body 100. It further includes a limiting member. Limiting portions are provided at the ends of the cylinder body 100 and the piston rod 200 that are away from each other for fixing the limiting member. The limiting member is used to fix the piston rod 200 to keep the piston rod 200 in a compressed state;

[0027] The limiting portion is a limiting unit 400, the limiting member is a limiting cover 300. The limiting cover 300 is made of a flexible material. The maximum telescopic length of the gas spring is greater than the length when the limiting cover 300 is stretched out, and the minimum telescopic length of the gas spring is less than or equal to the length after the limiting cover 300 is bent.

[0028] After the limiting cover 300 is bent, bending portions 310 are formed on both sides in the length direction. The limiting unit 400 abuts against the bending portions 310. The limiting cover 300 is used to fix the piston rod 200 through the cooperation of the bending portions 310 and the limiting unit 400. When the gas spring is packaged at the factory, the gas spring is first squeezed by a press to make the piston rod 200 in a compressed state, so as to reduce the length of the gas spring, improve the space utilization rate during transportation, increase the transportation quantity in the in-place space, and reduce the transportation cost; through the cooperation of the limiting cover 300 and the limiting portion, the annular cover is sleeved outside the cylinder body 100 and the piston rod 200 of the gas spring. By wrapping the entire gas spring structure, the piston rod 200 is directly fixed in the compressed state. The annular cover can not only fix the piston rod 200, but also protect the overall structure of the gas spring, avoid external physical impacts, provide a more stable fixing effect, and can more effectively prevent the piston rod 200 from vibrating during transportation.

[0029] The limiting cover 300 includes a connecting portion 600 and a locking portion 700. The connecting portion 600 is closely attached to the locking portion 700. The upper surface of the connecting portion 600 and the upper surface of the locking portion 700 are in the same plane. By making the upper surfaces of the connecting portion 600 and the locking portion 700 in the same plane, the situation of seams or unevenness is effectively reduced, thereby avoiding loosening or slipping caused by insufficient connection. This design improves the fixing effect of the limiting cover 300, ensures the stability of the gas spring in the compressed state, especially can better resist external vibrations and impacts during transportation, and prevents the piston rod 200 from accidentally stretching or the limiting cover 300 from falling off.

[0030] The connecting portion 600 is provided with a bending portion 610. The end point of the locking portion 700 abuts against the bending portion 610. The lower surface of the connecting portion 600 and the lower surface of the locking portion 700 are in the same plane.

[0031] The end point of the locking part 700 abuts against the bending part 610 of the connecting part 600, so that the lower surfaces of the connecting part 600 and the locking part 700 are on the same plane. This setting can effectively prevent the locking part 700 from shifting or loosening when subjected to external forces, ensuring that all parts can fit closely during installation, thereby enhancing the fixing effect of the gas spring in the compressed state and avoiding the risk of failure caused by loosening. In addition, the designs of the connecting part 600 and the locking part 700 are also more convenient for disassembly and installation.

[0032] The upper surface of the connecting part 600 and the lower surface of the locking part 700 are both provided with clamping grooves 800, which are convenient for the operator to disassemble the limiting cover 300.

[0033] In another embodiment, the limiting part is arranged at both ends of the piston rod 200. When the limiting part is a groove 500, the grooving directions of the two grooves 500 are the same. The limiting member includes a connecting rod, and connecting parts 600 are arranged at both ends of the connecting rod. The connecting parts 600 are located in the grooves 500 and are used to fix the piston rod 200. For gas springs with different uses, the fixing method during use can be fully utilized. In the case of top fixing, the connecting rod cooperates with the groove 500 to keep the piston rod 200 in the compressed state.

[0034] In another embodiment, the limiting part is arranged at both ends of the piston rod 200. When the limiting part is a positioning hole, the opening directions of the two positioning holes are the same. The limiting member includes a fixing band, and the fixing band is connected end to end through the positioning holes to fix the piston rod 200. Here, the fixing band can be selected as any cord. For the limiting part with a positioning hole, it can be fixed by passing through the limiting part and winding around the gas spring for one week to limit the expansion of the piston rod 200.

[0035] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A gas spring, comprising a cylinder body (100) and a piston rod (200), the piston rod (200) being slidably connected to the cylinder body (100), characterized in that, It further includes a limiting member for fixing the piston rod (200) to keep the piston rod (200) in a compressed state; The limiting member is a limiting cover (300), the limiting cover is made of a flexible material, the maximum telescopic length of the gas spring is greater than the length of the limiting cover, and the minimum telescopic length of the gas spring is less than or equal to the length after the limiting cover is bent.

2. The gas spring according to claim 1, wherein It further includes a limiting portion, the limiting portion is a groove (500), the grooving directions of the two grooves (500) are the same, the limiting member includes a connecting rod, and connecting portions (600) are arranged at both ends of the connecting rod, and the connecting portions (600) are located in the grooves (500) for fixing the piston rod (200).

3. The gas spring according to claim 2, characterized in that, The limiting portion is a positioning hole, the opening directions of the two positioning holes are the same, the limiting member includes a fixing band, and the fixing band is connected end to end through the positioning holes for fixing the piston rod (200).

4. The gas spring according to claim 1, characterized in that, The limiting cover (300) includes a connecting portion (600) and a locking portion (700), the connecting portion (600) is in close contact with the locking portion (700), and the upper surfaces of the connecting portion (600) and the locking portion (700) are on the same plane.

5. The gas spring according to claim 4, characterized in that, The connecting portion (600) is provided with a bending portion (610), the end point of the locking portion (700) abuts against the bending portion (610), and the lower surfaces of the connecting portion (600) and the locking portion (700) are on the same plane.

6. The gas spring according to claim 4, characterized in that, The upper surface of the connecting portion (600) and the lower surface of the locking portion (700) are both provided with clamping grooves (800) to facilitate the operator to disassemble the limiting cover (300).

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