Lifting type air pressure rod

Abstract

The utility model relates to a lifting type air pressure bar which comprises an outer sleeve, an annular plate is fixedly connected to the outer portion of the outer sleeve, jacking bolts are connected to the two sides of the interior of the annular plate, a rotating block is arranged at the top end of each jacking bolt, a movable handle is connected to the interior of each rotating block in a penetrating mode, and a plurality of positioning rods are arranged on the periphery of the lower portion of the exterior of the outer sleeve. An inner sleeve is arranged in the outer sleeve, and a piston rod is connected into the inner sleeve. The annular plate and the jacking bolt are arranged outside the outer sleeve, the outer sleeve can be driven to move upwards when the jacking bolt is rotated, the air pressure bar can be conveniently taken out of the chair bracket, and the connecting block and the positioning seat are connected through the fastening bolt. And when the fastening bolt is taken down, the connecting and fixing state between the positioning seat and the connecting block can be relieved, so that the inner sleeve can be taken out from the outer sleeve, the outer sleeve and the inner sleeve can be conveniently detached and replaced, and the use cost is saved.

Description

Technical Field

[0001] The utility model relates to a lifting type gas pressure rod, belonging to the technical field of gas pressure rods. Background Art

[0002] The pneumatic rod uses gas and liquid as working medium. It is an elastic element that can perform functions such as support, cushioning, braking, height adjustment and angle adjustment. The pneumatic rod is filled with high-pressure nitrogen. Since there is a through hole inside the piston, the gas pressure at both ends of the piston is equal, while the cross-sectional areas on both sides of the piston are different. One end is connected to the piston rod but the other end is not. Under the action of gas pressure, pressure is generated toward the side with a smaller cross-sectional area, thereby generating elastic force.

[0003] For example, CN205841603U discloses a gas pressure rod and a gas pressure rod device. The rough design of the second contact surface can not only reduce the contact area between the second contact surface and the first contact surface, but also make the second contact surface and the first contact surface slide against each other with lubrication through lubricating oil to avoid friction noise. However, due to the pressure of people sitting on the chair for a long time, the gas pressure rod is very firmly connected to the chair bracket. It is very laborious to remove the gas pressure rod. In addition, the gas pressure rod is an integrated structure. When the gas pressure rod is damaged, it often needs to be replaced as a whole, thereby increasing the cost of use. Utility Model Content

[0004] The purpose of the utility model is to provide a lifting gas pressure rod. By arranging an annular plate and a lifting bolt on the outside of an outer sleeve, the outer sleeve can be driven to move upward when the lifting bolt is rotated, so that the gas pressure rod can be conveniently taken out of the chair bracket. The connecting block and the positioning seat are connected to each other by fastening bolts. When the fastening bolts are removed, the connection and fixing state between the positioning seat and the connecting block can be released, so that the inner sleeve can be taken out of the outer sleeve, which is convenient for disassembly and replacement between the outer sleeve and the inner sleeve, saving the use cost, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A lifting pneumatic rod comprises an outer sleeve, an annular plate is fixedly connected to the outside of the outer sleeve, lifting bolts are connected to the two sides of the annular plate, a rotating block is provided on the top of the lifting bolt, a movable handle is connected to the inside of the rotating block, a plurality of positioning rods are provided around the lower part of the outer sleeve, an inner sleeve is provided inside the outer sleeve, a piston rod is connected to the inside of the inner sleeve, the bottom of the piston rod extends to the bottom of the inner sleeve and is fixedly connected to the connecting block, and the connecting block is embedded in the positioning seat.

[0007] Furthermore, a screw hole matching the jacking bolt is provided inside the annular plate, and the annular plate is connected to the jacking bolt through threads.

[0008] Furthermore, both ends of the movable handle are provided with limit blocks, and the movable handle is slidably connected inside the rotating block.

[0009] Furthermore, the positioning rod is rectangular, and four positioning rods are provided and are evenly arranged around the outside of the outer sleeve.

[0010] Furthermore, the inner sleeve is slidably connected inside the outer sleeve, and a top column is provided at the top of the inner sleeve.

[0011] Furthermore, a plurality of clamping strips are provided around the outside of the connection block, and the clamping strips are embedded in the interior of the positioning seat, and the connection block and the clamping strips are slidably connected in the interior of the positioning seat.

[0012] Furthermore, a fastening bolt is connected to the bottom of the positioning seat, and one end of the fastening bolt is connected to the inside of the connecting block.

[0013] The beneficial effects of the utility model are:

[0014] 1. An annular plate is arranged outside the outer sleeve, and a lifting bolt is arranged inside the annular plate. A rotating block and a movable handle are arranged above the lifting bolt. When in use, the rotating block and the lifting bolt can be driven to rotate by using the movable handle. When the lifting bolt is rotated, the bottom of the lifting bolt can be pressed against the bracket supporting the outer sleeve, thereby driving the outer sleeve to move upward, thereby facilitating the removal of the gas pressure rod from the chair bracket.

[0015] 2. By setting fastening bolts, the connecting block and the positioning seat are connected to each other through the fastening bolts. When the outer sleeve or the inner sleeve needs to be replaced, the fastening bolts can be taken out from the positioning seat to release the connection and fixing state between the positioning seat and the connecting block, so that the inner sleeve can be taken out from the outer sleeve, which is convenient for disassembly and replacement between the outer sleeve and the inner sleeve, saving the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 This is a front view of a lifting gas pressure rod of the utility model;

[0018] Figure 2 It is a cross-sectional view of a lifting gas pressure rod of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure of a connecting block and a positioning seat of a lifting type gas pressure rod of the utility model;

[0020] Figure 4 The utility model is a lifting type gas pressure rod Figure 2 A partial enlarged view of the area at center A;

[0021] Numbers in the figure: 1. Outer sleeve; 2. Annular plate; 3. Lifting bolt; 4. Rotating block; 5. Movable handle; 6. Positioning rod; 7. Inner sleeve; 8. Piston rod; 9. Connecting block; 10. Positioning seat; 11. Limiting block; 12. Push column; 13. Clamping strip; 14. Fastening bolt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1: Please refer to Figure 1-Figure 4 , the utility model provides a technical solution:

[0024] A lifting pneumatic rod comprises an outer sleeve 1, the outer sleeve 1 is fixedly connected to an annular plate 2 on the outside, lifting bolts 3 are connected to the two sides of the annular plate 2, a rotating block 4 is provided on the top of the lifting bolt 3, a movable handle 5 is connected to the rotating block 4, a plurality of positioning rods 6 are provided around the lower part of the outer sleeve 1, an inner sleeve 7 is provided inside the outer sleeve 1, a piston rod 8 is connected to the inner sleeve 7, the bottom of the piston rod 8 extends to the bottom of the inner sleeve 7 and is fixedly connected to the connecting block 9, and the connecting block 9 is embedded in the positioning seat 10.

[0025] Specifically, a screw hole matching the lifting bolt 3 is provided inside the annular plate 2, and the annular plate 2 is connected to the lifting bolt 3 by threads. Limit blocks 11 are provided at both ends of the movable handle 5, and the movable handle 5 is slidably connected inside the rotating block 4. When the lifting bolt 3 is rotated, the bottom of the lifting bolt 3 can be pressed against the bracket supporting the outer sleeve 1, thereby driving the outer sleeve 1 to move upward, thereby facilitating the removal of the gas pressure rod from the chair bracket.

[0026] Specifically, the positioning rod 6 is rectangular, and four positioning rods 6 are provided and evenly arranged around the outer periphery of the outer sleeve 1. The positioning rod 6 can be connected to the chair bracket together with the outer sleeve 1, thereby improving the stability of the outer sleeve 1 on the chair bracket.

[0027] Example 2: Please refer to Figure 2 , Figure 4The difference between this embodiment and embodiment 1 is that the inner sleeve 7 is slidably connected inside the outer sleeve 1, a top column 12 is provided at the top of the inner sleeve 7, a plurality of clips 13 are provided around the outside of the connecting block 9, the clips 13 are embedded in the inside of the positioning seat 10, the connecting block 9 and the clips 13 are slidably connected inside the positioning seat 10, a fastening bolt 14 is connected to the bottom of the positioning seat 10, one end of the fastening bolt 14 is connected to the inside of the connecting block 9, the clips 13 can be connected to the positioning seat 10, to improve the stability of the connecting block 9 in the positioning seat 10, when the fastening bolt 14 is removed from the positioning seat 10, the connection and fixing state between the positioning seat 10 and the connecting block 9 can be released, so that the inner sleeve 7 can be removed from the outer sleeve 1, which is convenient for disassembly and replacement between the outer sleeve 1 and the inner sleeve 7.

[0028] The working principle of the utility model is as follows: when in use, the movable handle 5 is used to drive the rotating block 4 and the lifting bolt 3 to rotate. When the lifting bolt 3 is rotated, the bottom of the lifting bolt 3 can be pressed against the bracket supporting the outer sleeve 1, thereby driving the outer sleeve 1 to move upward, and then facilitating the removal of the gas pressure rod from the chair bracket. When the outer sleeve 1 or the inner sleeve 7 needs to be replaced, the fastening bolt 14 can be removed from the positioning seat 10 to release the connection and fixing state between the positioning seat 10 and the connecting block 9, so that the inner sleeve 7 can be removed from the outer sleeve 1, which is convenient for disassembly and replacement between the outer sleeve 1 and the inner sleeve 7, saving the use cost.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A lifting gas pressure rod, comprising an outer sleeve (1), characterized in that: The outer sleeve (1) is fixedly connected to an annular plate (2) on the outside, and lifting bolts (3) are connected to both sides of the inner part of the annular plate (2). A rotating block (4) is provided at the top of the lifting bolt (3), and a movable handle (5) is connected to the inner part of the rotating block (4). A plurality of positioning rods (6) are provided around the lower part of the outer sleeve (1). An inner sleeve (7) is provided inside the outer sleeve (1), and a piston rod (8) is connected to the inner sleeve (7). The bottom of the piston rod (8) extends to the bottom of the inner sleeve (7) and is fixedly connected to a connecting block (9). The connecting block (9) is embedded in the positioning seat (10).

2. The lifting gas pressure rod according to claim 1, characterized in that: The annular plate (2) is provided with a screw hole matching the jacking bolt (3) inside, and the annular plate (2) and the jacking bolt (3) are connected via threads.

3. The lifting gas pressure rod according to claim 1, characterized in that: Limit blocks (11) are provided at both ends of the movable handle (5), and the movable handle (5) is slidably connected inside the rotating block (4).

4. The lifting gas pressure rod according to claim 1, characterized in that: The positioning rod (6) is rectangular, and four positioning rods (6) are provided and are evenly arranged around the outside of the outer sleeve (1).

5. The lifting gas pressure rod according to claim 1, characterized in that: The inner sleeve (7) is slidably connected inside the outer sleeve (1), and a top column (12) is provided at the top end of the inner sleeve (7).

6. The lifting gas pressure rod according to claim 1, characterized in that: A plurality of clamping strips (13) are provided around the outside of the connection block (9), the clamping strips (13) are embedded in the interior of the positioning seat (10), and the connection block (9) and the clamping strips (13) are slidably connected in the interior of the positioning seat (10).

7. The lifting gas pressure rod according to claim 1, characterized in that: A fastening bolt (14) is connected to the bottom of the positioning seat (10), and one end of the fastening bolt (14) is connected to the inside of the connecting block (9).

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