Sectional type gas spring

Abstract

The utility model relates to the technical field of gas springs, in particular to a sectional type gas spring which comprises a cylinder body and a piston rod installed on the cylinder body, a sectional mechanism is arranged on the cylinder body and used for adjusting the initial length, and connecting mechanisms are arranged on the piston rod and the sectional mechanism and used for being connected with other components. Comprising a barrel fixed to the rear end of a cylinder body, and a plurality of adjusting holes are formed in the barrel; the adjusting assembly comprises an extension cylinder slidably mounted at the rear end in the cylinder in a penetrating manner, an inner cylinder slidably mounted at the front end in the extension cylinder, a guide frame fixed at the rear end of the inner cylinder, two guide grooves formed in the guide frame and symmetrical to each other, pin heads slidably mounted at the two ends of the guide frame through the guide grooves, and a spring mounted between the front end in the extension cylinder and the inner cylinder; and the length of the sectioning mechanism can be adjusted and fixed, so that the initial length can be adjusted under the condition that the telescopic distance of the gas spring is not changed, and the gas spring can adapt to more diversified application scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of gas springs, in particular to a segmented gas spring. Background Art

[0002] A gas spring is an industrial accessory that can provide support, cushioning, braking, height adjustment, and angle adjustment. It consists of the following parts: a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, a filler, an in-cylinder control element, an out-of-cylinder control element, and a joint. The principle is to fill a sealed pressure cylinder with an inert gas or an oil-gas mixture to make the pressure inside the cavity several or even dozens of times higher than the atmospheric pressure. The piston rod's cross-sectional area is smaller than the piston's cross-sectional area, resulting in a pressure difference to achieve the movement of the piston rod.

[0003] The cam is provided with a plurality of support plates and a plurality of support plates, and a plurality of support plates are provided on the support bracket, and a plurality of support plates are provided on the support bracket.

[0004] When two components that are far apart need to be connected by an overall long gas spring, but the relative movement distance of these two components in actual operation is relatively short, the gas spring often undergoes significant deformation when subjected to external forces; this deformation may not only weaken its structural stability, but also directly lead to reduced positioning accuracy or unstable motion trajectory, especially in application scenarios with strict requirements on position accuracy or angle control, thereby affecting the performance and reliability of the entire system. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a segmented gas spring, which has the characteristics of adjustable and fixed length through a segmented mechanism, so that the initial length of the gas spring can be adjusted while the telescopic distance remains unchanged, and can adapt to more diverse application scenarios.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a segmented gas spring, including a cylinder body, a piston rod mounted on the cylinder body, a segmented mechanism provided on the cylinder body for adjusting the initial length, and a connecting mechanism provided on both the piston rod and the segmented mechanism for connecting other components, the segmented mechanism including:

[0007] The main assembly includes a barrel fixed to the rear end of the cylinder body and a plurality of adjustment holes formed on the barrel;

[0008] The adjustment assembly includes an extension tube that is slidably installed inside the rear end of the cylinder body, an inner tube that is slidably installed inside the front end of the extension tube, a guide frame fixed at the rear end of the inner tube, two guide grooves opened inside the guide frame and symmetrical to each other, pin heads that are slidably installed through the guide grooves at both ends of the guide frame, and a spring installed between the front end of the extension tube and the inner tube.

[0009] Preferably, the connecting mechanism includes a connecting seat fixed at the front end of the piston rod and the rear end of the extension tube, a universal ball head installed inside the connecting seat, a groove installed inside the connecting seat, and positioning grooves opened at both ends of the groove and used to limit the universal ball head.

[0010] Preferably, the connecting mechanism further comprises a disassembly groove provided on the connecting seat and used for disassembly and assembly of the groove, and a snap ring provided on the surface of the connecting seat and used for positioning the groove after installation.

[0011] Preferably, the adjustment assembly further includes a front limit head fixed at the front end of the extension tube and a rear limit head fixed at the rear end of the inner tube.

[0012] Preferably, the adjustment assembly further includes a thickened portion arranged at the rear end of the extension tube and a reinforcement ring fixed to the inner wall of the rear end of the extension tube.

[0013] Preferably, the included angle between the guide groove and the pin head is forty-five degrees, and the pin head and the extension tube are slidably installed through them.

[0014] Beneficial effects

[0015] The utility model provides a segmented gas spring. Compared with the existing technology, it has the following advantages:

[0016] (1) By pressing the pin heads at both ends, the pin heads are retracted inward and disengaged from the adjustment holes, so that the extension tube can be adjusted to extend outward from the cylinder body. When the appropriate length is adjusted, the pressed pin heads are released, and the pressure of the spring rebound pushes the inner cylinder to drive the guide frame. The guide frame drives the pin heads to extend outward through the guide groove until the pin heads are inserted into the adjustment holes at the corresponding positions, thereby fixing the extended extension tube to the cylinder body. The length of the segmented mechanism can be adjusted and fixed, so that the initial length can be adjusted while the telescopic distance of the gas spring remains unchanged, which can adapt to more diverse application scenarios.

[0017] (2) After the universal ball joint is installed inside the connecting seat, the groove is installed on the connecting seat through the disassembly and assembly groove until the groove is embedded in the retaining ring, so that the groove limits the universal ball joint through the positioning groove, so that the universal ball joint and the connecting seat can be movably installed; the front and rear ends of the gas spring are respectively connected to the components through the connecting mechanism, and the universal ball joint can be rotated within any angle to meet the installation requirements of different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the segmented mechanism in the present utility model;

[0020] Figure 3 It is a structural diagram of the connecting mechanism in the present utility model;

[0021] Figure 4 This is a disassembled diagram of the connecting mechanism in the present utility model.

[0022] In the figure: 1. Cylinder body; 2. Piston rod; 3. Segment mechanism; 31. Main body assembly; 311. Cylinder body; 312. Adjustment hole; 32. Adjustment assembly; 321. Extension cylinder; 322. Inner cylinder; 323. Guide frame; 324. Guide groove; 325. Pin head; 326. Spring; 327. Front limit head; 328. Rear limit head; 329. Thickening part; 3210. Reinforcement ring; 4. Connecting mechanism; 41. Connecting seat; 42. Universal ball head; 43. Disassembly and assembly groove; 44. Snap ring; 45. Groove; 46. Positioning groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1 - Figure 4 The utility model provides a technical solution for a segmented gas spring: a segmented gas spring comprising a cylinder body 1, a piston rod 2 mounted on the cylinder body 1, a segmentation mechanism 3 provided on the cylinder body 1 and used to adjust the initial length, a connecting mechanism 4 provided on both the piston rod 2 and the segmentation mechanism 3 and used to connect other components, and the segmentation mechanism 3 comprises:

[0025] The main body assembly 31 includes a cylinder 311 fixed to the rear end of the cylinder body 1, and a plurality of adjustment holes 312 formed on the cylinder 311;

[0026] The adjustment assembly 32 includes an extension tube 321 that is slidably installed inside the rear end of the cylinder 311, an inner tube 322 that is slidably installed inside the front end of the extension tube 321, a guide frame 323 that is fixed at the rear end of the inner tube 322, two guide grooves 324 opened inside the guide frame 323 and symmetrical to each other, pin heads 325 that are slidably installed at both ends of the guide frame 323 through the guide grooves 324, and a spring 326 installed between the front end of the extension tube 321 and the inner tube 322.

[0027] In this embodiment, by pressing the pin heads 325 at both ends, the pin heads 325 are retracted inward and disengaged from the adjustment holes 312, so that the extension tube 321 can be adjusted to extend outward from the cylinder body 311. When adjusted to the appropriate length, the pressed pin heads 325 are released, and the rebound pressure of the spring 326 pushes the inner cylinder 322 to drive the guide frame 323. The guide frame 323 drives the pin heads 325 to extend outward through the guide groove 324 until the pin heads 325 are inserted into the adjustment holes 312 at the corresponding positions, thereby fixing the extended extension tube 321 to the cylinder body 311. The length of the segmented mechanism 3 can be adjusted and fixed, so that the initial length can be adjusted while the telescopic distance of the gas spring remains unchanged, which can adapt to more diverse application scenarios.

[0028] Specifically, the connecting mechanism 4 includes a connecting seat 41 fixed at the front end of the piston rod 2 and the rear end of the extension tube 321, a universal ball head 42 installed inside the connecting seat 41, a groove 45 installed inside the connecting seat 41, and positioning grooves 46 opened at both ends of the groove 45 and used to limit the universal ball head 42.

[0029] In this embodiment, the front and rear ends of the gas spring are respectively connected to the components through the connecting mechanism 4, and the universal ball head 42 can be rotated within any angle to meet the installation requirements of different angles.

[0030] Specifically, the connecting mechanism 4 further includes a disassembly groove 43 provided on the connecting seat 41 and used for disassembling the groove 45 , and a snap ring 44 provided on the surface of the connecting seat 41 and used for positioning the groove 45 after installation.

[0031] In this embodiment, after the universal ball head 42 is installed inside the connecting seat 41, the groove 45 is installed on the connecting seat 41 through the disassembly groove 43 until the groove 45 is embedded in the retaining ring 44, so that the groove 45 limits the universal ball head 42 through the positioning groove 46, so that the universal ball head 42 and the connecting seat 41 are movably installed.

[0032] Specifically, the adjustment assembly 32 further includes a front limit head 327 fixed at the front end of the extension tube 321 and a rear limit head 328 fixed at the rear end of the inner tube 322 .

[0033] In this embodiment, the spring 326 is limited by the front limiting head 327 cooperating with the rear limiting head 328 to prevent the spring 326 from being shifted when being squeezed.

[0034] Specifically, the adjustment assembly 32 further includes a thickened portion 329 disposed at the rear end of the extension tube 321 and a reinforcement ring 3210 fixed to the inner wall of the rear end of the extension tube 321 .

[0035] In this embodiment, the rear end strength of the extension tube 321 can be improved by cooperating with the thickened portion 329 and the reinforcement ring 3210 .

[0036] Specifically, the included angle between the guide groove 324 and the pin head 325 is forty-five degrees, and the pin head 325 and the extension tube 321 are penetrated and slidably installed.

[0037] In this embodiment, when the guide frame 323 moves, the guide slot 324 can drive the pin head 325 to move vertically therewith.

[0038] The working principle and usage process of the present invention are as follows: first, by pressing the pin heads 325 at both ends, the pin heads 325 are retracted inwardly and disengaged from the adjustment holes 312, so that the extension tube 321 can be adjusted to extend outward from the cylinder body 311. When the appropriate length is adjusted, the pressed pin heads 325 are released, and the rebound pressure of the spring 326 pushes the inner cylinder 322 to drive the guide frame 323. The guide frame 323 drives the pin heads 325 to extend outward through the guide grooves 324 until the pin heads 325 are inserted into the adjustment holes 312 at the corresponding positions, thereby fixing the extended extension tube 321 to the cylinder body 311.

[0039] After the universal ball head 42 is installed inside the connecting seat 41, the groove 45 is installed on the connecting seat 41 through the disassembly groove 43 until the groove 45 is embedded in the retaining ring 44, so that the groove 45 limits the universal ball head 42 through the positioning groove 46, so that the universal ball head 42 and the connecting seat 41 are movably installed; the front and rear ends of the gas spring are respectively connected to the components through the connecting mechanism 4, and the universal ball head 42 can be rotated at any angle to meet the installation requirements at different angles.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A segmented gas spring comprising a cylinder (1) and a piston rod (2) mounted on the cylinder (1), characterized in that: The cylinder body (1) is provided with a segmentation mechanism (3) for adjusting the initial length. The piston rod (2) and the segmentation mechanism (3) are both provided with a connection mechanism (4) for connecting other components. The segmentation mechanism (3) includes: The main body assembly (31) includes a barrel (311) fixed to the rear end of the cylinder (1), and a plurality of adjustment holes (312) formed on the barrel (311); The adjustment assembly (32) includes an extension tube (321) slidably mounted inside the rear end of the cylinder (311), an inner tube (322) slidably mounted inside the front end of the extension tube (321), a guide frame (323) fixed at the rear end of the inner tube (322), two guide grooves (324) provided inside the guide frame (323) and symmetrical to each other, pins (325) slidably mounted at both ends of the guide frame (323) through the guide grooves (324), and a spring (326) installed between the front end of the extension tube (321) and the inner tube (322).

2. A segmented gas spring according to claim 1, characterized in that: The connecting mechanism (4) comprises a connecting seat (41) fixed to the front end of the piston rod (2) and the rear end of the extension tube (321), a universal ball head (42) installed inside the connecting seat (41), a groove (45) installed inside the connecting seat (41), and positioning grooves (46) provided at both ends of the groove (45) for limiting the universal ball head (42).

3. A segmented gas spring according to claim 2, characterized in that: The connecting mechanism (4) further comprises a disassembly groove (43) provided on the connecting seat (41) and used for disassembling the groove (45); and a snap ring (44) provided on the surface of the connecting seat (41) and used for positioning the groove (45) after installation.

4. The segmented gas spring according to claim 1, characterized in that: The adjustment assembly (32) further comprises a front limit head (327) fixed at the front end of the extension tube (321) and a rear limit head (328) fixed at the rear end of the inner tube (322).

5. The segmented gas spring according to claim 1, characterized in that: The adjustment assembly (32) further includes a thickened portion (329) arranged at the rear end of the extension tube (321), and a reinforcement ring (3210) fixed to the inner wall of the rear end of the extension tube (321).

6. The segmented gas spring according to claim 1, characterized in that: The included angle between the guide groove (324) and the pin head (325) is forty-five degrees, and the pin head (325) and the extension tube (321) are penetrated and slidably installed.

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