Gas spring supporting rod

Abstract

The utility model discloses a gas spring supporting rod, which belongs to the technical field of elastic elements and comprises a sliding rod and a supporting sleeve, and an inner support is fixed at the end of the sliding rod. An opening is formed in one end of the supporting sleeve, the end, away from the sliding rod, of the inner support is slidably inserted into the supporting sleeve, a gas storage chamber is arranged between the inner support and the supporting sleeve, and high-pressure gas is injected into the gas storage chamber; wherein a plurality of convex columns are arranged on the outer wall of the inner support, the convex columns are evenly distributed on the outer ring face of the inner support in the circumferential direction, and the outermost sides of the convex columns make contact with the inner wall of the supporting sleeve. A plurality of protruding columns are arranged on the outer wall of the inner support and make contact with the inner wall of the supporting sleeve, so that the contact area and stability between the inner support and the supporting sleeve are enhanced. And the contact parts of the convex columns and the limiting columns are designed to be cambered surfaces, so that pressure can be distributed more uniformly, and friction and abrasion are reduced. Meanwhile, friction between the sliding rod and the supporting sleeve is reduced due to the design that the sliding rod penetrates through the lining, the abrasion resistance of the whole structure is improved, and the service life of the whole structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of elastic elements, in particular to a gas spring support rod. Background Art

[0002] Gas spring struts are common mechanical components used in a wide range of applications, including automobiles, furniture, and medical equipment, providing stable support and cushioning. Traditional gas spring strut designs often focus on providing sufficient support force and adjustment range, but in practice, they often face challenges such as insufficient structural stability, severe friction and wear, and limited service life. These issues are particularly prominent in applications subject to high pressure or frequent movement.

[0003] While the performance of gas spring support rods has been improved to a certain extent through structural optimization, the selection of wear-resistant materials, and the addition of lubrication measures, there is still room for improvement. This is particularly true in terms of providing stable support force, reducing friction and wear, improving structural stability, and extending service life. To this end, the present utility model provides a gas spring support rod that addresses these issues. Utility Model Content

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a gas spring support rod that can provide a stable support for the gas spring.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a gas spring support rod, comprising:

[0006] A slide rod, the end of which is fixed with an inner support;

[0007] A support sleeve, one end of which is provided with an opening, an end of the inner support away from the slide rod is slidably inserted into the interior of the support sleeve, an air storage chamber is provided between the inner support and the support sleeve, and high-pressure gas is injected into the air storage chamber;

[0008] The inner support includes an inner sleeve and a plurality of protrusions fixed on the outer wall of the inner sleeve. The plurality of protrusions are evenly distributed on the outer ring surface of the inner support. The outermost side of the protrusions contacts the inner wall of the support sleeve.

[0009] Preferably, an inner groove is provided between any two protruding columns, a plurality of limiting columns arranged along the axis direction of the supporting sleeve are provided on the inner wall of the supporting sleeve, and the limiting shaft is clamped in the inner groove in the circumferential direction.

[0010] Preferably, the contact portion between the outer side of the protruding column and the supporting sleeve is an arc surface, and the inner side of the limiting column is also an arc surface.

[0011] Preferably, a piston column is installed at the bottom of the inner hole of the support sleeve, and one end of the piston column away from the bottom of the hole extends to the inside of the inner support, and the air storage chamber is formed between the piston column and the inside of the inner support.

[0012] Preferably, the piston column includes a sealing column and an insertion shaft, an inner hole is provided inside the sealing column, one end of the insertion shaft extends into the inner hole, and an elastomer is installed in the inner hole, one end of the elastomer rests on the insertion shaft and the other end rests on the sealing column.

[0013] Preferably, a bushing is fixed to one open end of the support sleeve, and the sliding rod passes through the bushing.

[0014] Preferably, hinge ears are installed at both ends of the sliding rod and the supporting sleeve.

[0015] Preferably, a connecting piece is installed between the sliding rod and the inner support, and the diameter of the connecting piece is adapted to the inner diameter of the support sleeve.

[0016] The beneficial effects of the present invention are:

[0017] By providing multiple protrusions on the outer wall of the inner support, which contact the inner wall of the support sleeve, the contact area and stability between the inner support and the support sleeve are enhanced. Furthermore, the inner groove between any two protrusions cooperates with the limit posts on the inner wall of the support sleeve, providing an additional guiding and stabilizing support mechanism, effectively preventing excessive movement or rotation of the inner support within the support sleeve.

[0018] The contact areas between the boss and the limit post are designed with curved surfaces, which can more evenly distribute pressure and reduce friction and wear. At the same time, the design of the slide rod passing through the bushing also reduces friction between the slide rod and the support sleeve, improving the wear resistance and service life of the entire structure.

[0019] The support function is achieved by injecting high-pressure gas into the air chamber formed between the piston rod and the inner support. When the gas spring support rod is under pressure, the high-pressure gas provides stable support. In addition, the design of the elastomer (high-pressure spring) ensures that it can provide additional support when the gas spring support rod is subjected to high pressure and compressed to its limit, avoiding the damage that may be caused by a rigid connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present utility model.

[0021] Figure 2 This is a connection diagram of the sliding rod and the inner support of the utility model.

[0022] Figure 3 This is a cross-sectional view of the connection between the inner support and the support sleeve of the utility model.

[0023] Figure 4This is an internal cross-sectional view of the support sleeve of the utility model.

[0024] Figure 5 This is a three-dimensional diagram of the gas spring support rod.

[0025] In the figure: 1, sliding rod, 2, supporting sleeve, 21, limiting column, 3, bushing, 4, inner support, 41, inner sleeve, 42, protruding column, 5, sealing column, 6, plug shaft, 7, connecting piece, 8, elastomer, 9, air storage chamber. DETAILED DESCRIPTION

[0026] The present invention is described below with reference to specific embodiments, but is not intended to limit the present invention.

[0027] Example 1

[0028] like Figure 1-Figure 5 As shown, in this embodiment, a gas spring support rod is provided, including a slide rod 1 and a support sleeve 2, and an inner support 4 is fixed to the end of the slide rod 1; one end of the support sleeve 2 is provided with an opening, and the inner support 4 is slidably inserted into the interior of the support sleeve 2 at the end away from the slide rod 1, and a bushing 3 is fixed at the open end of the support sleeve 2, and the slide rod 1 passes through the bushing 3 to reduce friction, provide lubrication or protect the slide rod 1 from wear, and an air storage chamber 9 is provided between the inner support 4 and the support sleeve 2, and high-pressure gas is injected into the air storage chamber 9. The support rod realizes its supporting function through the sliding cooperation of the slide rod 1 and the inner support 4 in the support sleeve 2, and the air storage chamber 9 formed therebetween is injected with high-pressure gas.

[0029] Both ends of the slide bar 1 and the support sleeve 2 are equipped with hinged ears for connecting other components or realizing some form of rotation or swing function. This makes the gas spring support rod flexible to install and use in different application scenarios.

[0030] A connecting piece 7 is installed between the slide bar 1 and the inner support 4. The diameter of the connecting piece 7 is adapted to the inner diameter of the support sleeve 2, ensuring that the connecting piece 7 can fit tightly against the inner wall of the support sleeve 2, thereby providing additional support and stability. At the same time, the connecting piece 7 may also help to distribute the pressure between the slide bar 1 and the inner support 4, extending the service life of the entire structure.

[0031] The inner support 4 comprises an inner sleeve 41 and a plurality of protrusions 42 fixed to the outer wall of the inner sleeve 41. The protrusions 42 are evenly distributed circumferentially around the outer surface of the inner support 4. The outermost portions of the protrusions 42 contact the inner wall of the support sleeve 2. The design of the protrusions 42 enhances the contact and stability between the inner support 4 and the support sleeve 2. In short, this gas spring support rod utilizes high-pressure gas and mechanical structure to provide stable support force.

[0032] Example 2

[0033] like Figure 1-Figure 5As shown, based on the first embodiment, this embodiment provides the cooperation between the protruding column 42 and the limiting column 21, which is as follows:

[0034] An inner groove is provided between any two bosses 42. These inner grooves not only provide additional structural features but also cooperate with the specific structure within the support sleeve 2. The inner wall of the support sleeve 2 is provided with a plurality of limit posts 21 arranged along the axis of the support sleeve 2. The limit posts 21 are arranged along the axis of the support sleeve 2, extending from one end of the support sleeve 2 to the other. The limit shaft is circumferentially engaged in the inner groove, and the limit posts 21 are designed to be able to engage in the inner groove in the circumferential direction. When the inner support 4 (with the bosses 42 and inner groove) slides within the support sleeve 2, the limit posts 21 will move along the inner groove, thereby providing an additional guiding and stable support mechanism. This design not only helps prevent the inner support 4 from excessive movement or rotation within the support sleeve 2, but also may help provide additional support or locking functions in specific positions.

[0035] The outer side of the boss 42 and the support sleeve 2 form a curved surface, and the inner side of the limiting post 21 also forms a curved surface. This curved surface contact can reduce friction and wear because, compared to flat contact, it can more evenly distribute pressure during sliding or movement. The inner side of the limiting post 21 (i.e., the portion of the limiting post 21 facing the inner groove) is also designed as a curved surface to match the curved surface of the outer side of the boss 42, thereby achieving a smoother and more stable fit. When the limiting post 21 is engaged in the inner groove, the curved surface contact ensures a tight fit between the two, reducing gaps and looseness.

[0036] Example 3

[0037] like Figure 1-Figure 5 As shown, based on the first and second embodiments, this embodiment provides a structure of the air storage chamber 9, which is as follows:

[0038] A piston rod is mounted at the bottom of the inner hole of the support sleeve 2. The end of the piston rod, away from the bottom of the hole, extends into the interior of the inner support 4. An air storage chamber 9 is formed between the piston rod and the interior of the inner support 4. A closed space is formed between the piston rod and the inner support 4. This space is used as the air storage chamber 9 for storing high-pressure gas. This air storage chamber 9 is the key part that enables the gas spring support rod to provide support force.

[0039] The piston column includes a sealing column 5 and an insertion shaft 6. The interior of the sealing column 5 is provided with an inner hole. One end of the insertion shaft 6 extends into the inner hole, and an elastomer 8 is installed in the inner hole. One end of the elastomer 8 rests on the insertion shaft 6 and the other end rests on the sealing column 5. In this gas spring support rod, the elastomer 8 adopts a high-pressure spring. This design ensures that the elastic effect of the high-pressure spring will only be activated when the gas spring support rod is subjected to greater pressure and compressed to the extreme position. This mechanism not only provides the necessary support force, but also avoids the damage that may be caused by a rigid connection, thereby effectively protecting the structure and function of the entire gas spring support rod.

[0040] Working principle:

[0041] In the initial state, the air chamber 9 formed between the piston rod and the inner support 4 is filled with high-pressure gas. The slide rod 1 and the inner support 4 are tightly connected by the connecting piece 7 and can slide freely within the support sleeve 2. Furthermore, the curved contact surface between the protrusion 42 and the stopper 21 ensures structural stability and reduces friction and wear.

[0042] When the gas spring support rod is subjected to pressure, the slide rod 1 and inner support 4 slide along the support sleeve 2. The interaction between the protrusion 42 and the limit post 21 provides an additional guiding and stabilizing support mechanism, preventing excessive movement or rotation of the inner support 4. Simultaneously, the high-pressure gas generates pressure within the gas reservoir 9, providing stable support.

[0043] When the gas spring support rod is subjected to significant pressure and compressed to its limit, the elastic action of elastomer 8 (high-pressure spring) is activated. This high-pressure spring provides additional support, preventing damage that could otherwise be caused by a rigid connection. At the same time, the arcuate contact design maintains structural stability and reduces friction and wear.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A gas spring support rod, characterized in that: include: A slide rod (1), wherein an inner support (4) is fixed to the end of the slide rod (1); A support sleeve (2), one end of the support sleeve (2) is provided with an opening, an end of the inner support (4) away from the slide rod (1) is slidably inserted into the interior of the support sleeve (2), an air storage chamber (9) is provided between the inner support (4) and the support sleeve (2), and high-pressure gas is injected into the interior of the air storage chamber (9); The inner support (4) includes an inner sleeve (41) and a plurality of protrusions (42) fixed on the outer wall of the inner sleeve (41). The plurality of protrusions (42) are evenly distributed on the outer ring surface of the inner support (4). The outermost sides of the protrusions (42) are in contact with the inner wall of the support sleeve (2).

2. A gas spring support rod according to claim 1, characterized in that: An inner groove is provided between any two protruding columns (42), and a plurality of limiting columns (21) arranged along the axis direction of the support sleeve (2) are provided on the inner wall of the support sleeve (2), and the limiting columns are clamped in the inner groove in the circumferential direction.

3. A gas spring support rod according to claim 2, characterized in that: The contact portion between the outer side of the protruding column (42) and the supporting sleeve (2) is an arc surface, and the inner side of the limiting column (21) is also an arc surface.

4. The gas spring support rod according to claim 1, characterized in that: A piston column is installed at the bottom of the inner hole of the support sleeve (2), and one end of the piston column away from the bottom of the hole extends to the inside of the inner support (4), and the air storage chamber (9) is formed between the piston column and the inside of the inner support (4).

5. The gas spring support rod according to claim 4, characterized in that: The piston column comprises a sealing column (5) and an insert shaft (6); an inner hole is provided inside the sealing column (5); one end of the insert shaft (6) extends into the inner hole; and an elastic body (8) is installed in the inner hole; one end of the elastic body (8) abuts against the insert shaft (6) and the other end abuts against the sealing column (5).

6. The gas spring support rod according to claim 1, characterized in that: A bushing (3) is fixed to one open end of the support sleeve (2), and the slide rod (1) passes through the bushing (3).

7. The gas spring support rod according to claim 1, characterized in that: Both ends of the slide rod (1) and the support sleeve (2) are equipped with hinge ears.

8. The gas spring support rod according to claim 1, characterized in that: A connecting piece (7) is installed between the slide rod (1) and the inner support (4), and the diameter of the connecting piece (7) is adapted to the inner diameter of the support sleeve (2).

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