Gas spring with limiting protection function

Abstract

The utility model discloses a gas spring with a limiting protection function, and relates to the technical field of gas springs. The gas spring with the limiting and protecting functions comprises a pipe body, a movable rod and two connectors, the two connectors are installed at the lower end of the pipe body and the upper end of the movable rod, the movable rod is arranged on the inner wall of the pipe body in a sleeving mode, a support is fixedly installed at the upper end of the pipe body, and a positioning rod is fixedly connected into the support. The positioning device comprises a support, a positioning rod is fixedly mounted on the support, a transmission rod is inserted into the positioning rod, a limiting assembly is fixedly mounted on one side of the positioning rod, and a first spring is fixedly mounted on the inner wall of the positioning rod, so that the transmission rod can be pressed to compress the first spring through the support, the positioning rod, the transmission rod, the first spring, two clamping blocks and the limiting assembly; the two clamping blocks are driven to extend outwards into the positioning holes, the transmission rod is fixed through the limiting assembly, and the movable rod can be limited.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas spring technical field, concretely is a gas spring with limit protection function. BACKGROUND

[0002] The gas spring is a kind of industrial fittings that can support, buffer, brake, height adjustment and angle adjustment, etc., and is also called support rod, gas support, angle adjuster, gas pressure rod and damper, etc., its principle is to fill inert gas or oil-gas mixture into the closed pressure cylinder, so that the pressure in the cavity is higher than atmospheric pressure, thereby realizing the movement of piston rod by the pressure difference.

[0003] For the related technology in the above, the inventor believes that the following defects exist: the existing gas spring does not have a limiting system during operation, which leads to no protective measures during use, easy to lose support effect on objects, causing safety hazards, so we propose a gas spring with limit protection function to solve the above problems. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a gas spring with limit protection function, which solves the problem that the gas spring does not have a limiting system during operation, which leads to no protective measures during use, easy to lose support effect on objects, causing safety hazards.

[0005] To achieve the above purpose, the utility model realizes the following technical scheme: a gas spring with limit protection function, comprising a pipe body, a movable rod and two joints, the two joints are installed at the lower end of the pipe body and the upper end of the movable rod, the movable rod is sleeved on the inner wall of the pipe body, the upper end of the pipe body is fixedly installed with a support, the inside of the support is fixedly connected with a positioning rod, the inside of the positioning rod is inserted with a transmission rod, one side of the positioning rod is fixedly installed with a limiting assembly, the inner wall of the positioning rod is fixedly installed with a first spring, the lower end of the positioning rod is movably connected with two clamping blocks.

[0006] The outer end of the movable rod is provided with a groove, a plurality of positioning holes are equidistantly arranged on the left side of the groove, and the positioning rod is slidably connected to the inner wall of the groove.

[0007] Preferably, the inner wall of the positioning rod is provided with a limiting groove and a mounting groove, the transmission rod is inserted into the limiting groove, the two clamping blocks are slidably connected to the inner wall of the mounting groove, the inner wall of the limiting groove and the outer wall of the transmission rod are fixedly connected with a limiting block, and the side of the transmission rod is provided with a clamping groove.

[0008] Preferably, the inner side of the transmission rod is in a "V" shape, and one end of the first spring is fixedly connected with the inner side of the limiting groove, and the other end of the first spring is fixedly connected with one side of the limiting block.

[0009] Preferably, the mounting groove is in communication with the limiting groove, four sliding grooves are formed in the left and right sides of the mounting groove, and sliding blocks are fixedly installed on the left and right sides of the clamping block.

[0010] Preferably, the inner side of the clamping block is in an inclined surface, and the inner wall of the sliding groove is fixedly connected with the second spring, and the other end of the second spring is fixedly connected with the inner side of the sliding block.

[0011] Preferably, the limiting assembly comprises a connecting piece, the connecting piece is fixedly connected with one side of the positioning rod, a plug rod is inserted into the connecting piece, a limiting ring is fixedly installed on the inner wall of the connecting piece and located outside the plug rod, and a third spring is fixedly connected with the inner wall of the connecting piece and located at one side of the limiting ring.

[0012] Preferably, the plug rod is perpendicular to the clamping groove, and the inner side of the plug rod is equal in size to the clamping groove.

[0013] The utility model provides a gas spring with limiting protection function compares with prior art has the following beneficial effects:

[0014] The gas spring with limiting protection function can press the transmission rod to compress the first spring, extend the two clamping blocks outward into the positioning hole, and fix the transmission rod through the limiting assembly, so that the movable rod can be limited. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the support connecting structure schematic diagram of the utility model;

[0017] Figure 3 It is the positioning rod section structure schematic diagram of the utility model;

[0018] Figure 4 It is the clamping block installation structure schematic diagram of the utility model;

[0019] Figure 5 It is the limiting assembly section structure schematic diagram of the utility model.

[0020] In the figure: 1, pipe body; 2, movable rod; 21, groove; 22, positioning hole; 3, support; 4, joint; 5, positioning rod; 51, transmission rod; 511, clamping groove; 52, limiting groove; 53, mounting groove; 531, sliding groove; 54, limiting block; 55, first spring; 56, clamping block; 561, sliding block; 57, second spring; 6, limiting assembly; 61, connecting piece; 62, plug rod; 63, limiting ring; 64, third spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a gas spring with limiting protection function, including pipe body 1, movable rod 2 and two joints 4, two joints 4 are installed in the lower end of pipe body 1 and the upper end of movable rod 2, movable rod 2 is sleeved in the inner wall of pipe body 1, the upper end of pipe body 1 is fixedly installed with support 3, the inside of support 3 is fixedly connected with positioning rod 5, transmission rod 51 is inserted in the inside of positioning rod 5, limiting assembly 6 is fixedly installed on the side of positioning rod 5, first spring 55 is fixedly installed on the inner wall of positioning rod 5, two clamping blocks 56 are movably connected to the lower end of positioning rod 5;The outer end of movable rod 2 is provided with groove 21, a plurality of positioning holes 22 are equidistantly arranged on the left side of groove 21, and positioning rod 5 is slidably connected to the inner wall of groove 21.

[0023] Pipe body 1 can be installed on support 3, positioning rod 5 is fixedly connected in the inside of support 3, groove 21 is provided on the outer end of movable rod 2, a plurality of positioning holes 22 are equidistantly arranged on the left side of groove 21, positioning rod 5 is slidably connected to the inner wall of groove 21, transmission rod 51 is inserted in the inside of positioning rod 5, so that positioning rod 5 slides along the inside of groove 21 when the gas spring is used, and because transmission rod 51 is inserted in the inside of positioning rod 5, limiting assembly 6 is fixedly installed on the side of positioning rod 5, first spring 55 is fixedly installed on the inner wall of positioning rod 5, two clamping blocks 56 are movably connected to the lower end of positioning rod 5, so that first spring 55 is compressed by pressing transmission rod 51, two clamping blocks 56 are extended outward into positioning hole 22, and limiting assembly 6 is used to fix transmission rod 51, so that movable rod 2 can be limited.

[0024] Please refer to Figure 3 , Figure 5The inner wall of the positioning rod 5 has a limiting groove 52 and an installation groove 53. The transmission rod 51 is inserted into the limiting groove 52. Both locking blocks 56 are slidably connected to the inner wall of the installation groove 53. The inner wall of the limiting groove 52 and the outer wall of the transmission rod 51 are fixedly connected to the limiting block 54. A locking groove 511 is provided on one side of the transmission rod 51. The inner side of the transmission rod 51 is V-shaped. One end of the first spring 55 is fixedly connected to the inner side of the limiting groove 52, and the other end of the first spring 55 is fixedly connected to one side of the limiting block 54.

[0025] The transmission rod 51, the limiting block 54, the first spring 55, and the two locking blocks 56 can be installed through the limiting groove 52 and the mounting groove 53 opened on the inner wall of the positioning rod 5. Since the inner side of the transmission rod 51 is V-shaped, and one end of the first spring 55 is fixedly connected to the inner side of the limiting groove 52, and the other end of the first spring 55 is fixedly connected to one side of the limiting block 54, the transmission rod 51 is pressed to drive the limiting block 54, compress the first spring 55, and move down along the inner wall of the limiting groove 52, so that the bottom of the transmission rod 51 contacts the inner side of the two locking blocks 56, thereby driving the two locking blocks 56 to extend outward into the positioning hole 22.

[0026] See Figure 3 , Figure 4 The mounting groove 53 is connected to the limiting groove 52, and four sliding grooves 531 are provided on the left and right sides of the mounting groove 53. At the same time, sliders 561 are fixedly installed on the left and right sides of the locking block 56. The four sliders 561 are slidably connected in the four sliding grooves 531. The inner sides of the two locking blocks 56 are inclined surfaces, and the inner walls of the four sliding grooves 531 are fixedly connected to the second springs 57. The other ends of the four second springs 57 are fixedly connected to the inner sides of the four sliders 561.

[0027] Four sliders 561 and four second springs 57 can be installed through the four sliding grooves 531 on the left and right sides of the mounting slot 53. Since the four sliders 561 are fixedly installed on the left and right sides of the two locking blocks 56 respectively, and the inner sides of the two locking blocks 56 are inclined surfaces, the left and right ends of the four second springs 57 are fixedly connected to the four sliding grooves 531 and the four sliders 561. As a result, the transmission rod 51 moves down, and the bottom of the transmission rod 51 contacts the inner side of the two locking blocks 56. Then, under the action of pressure, the two locking blocks 56 can be pushed, which will drive the four sliders 561 respectively, compress the four second springs 57, and extend outward along the four sliding grooves 531 into the positioning hole 22, thereby limiting the movement rod 2.

[0028] See Figure 3 , Figure 5The limiting assembly 6 comprises a connecting piece 61 fixedly connected to one side of the positioning rod 5, an insertion rod 62 inserted in the connecting piece 61, a limiting ring 63 fixedly installed on the inner wall of the connecting piece 61 and outside the insertion rod 62, a third spring 64 fixedly connected to one side of the limiting ring 63 on the inner wall of the connecting piece 61, and the insertion rod 62 is perpendicular to the clamping groove 511 and has the same size as the clamping groove 511.

[0029] The insertion rod 62, the limiting ring 63 and the third spring 64 are installed through the connecting piece 61 in the limiting assembly 6. Since the insertion rod 62 is perpendicular to the clamping groove 511 and has the same size as the clamping groove 511, when the transmission rod 51 moves downward to a certain distance, the third spring 64 pushes the limiting ring 63, and the insertion rod 62 is inserted into the clamping groove 511 along the connecting piece 61, thereby fixing the transmission rod 51.

[0030] During work, the support 3 is installed through the pipe body 1. Since the support 3 is fixedly connected with the positioning rod 5 in the inner part, the outer end of the movable rod 2 is provided with a groove 21, a plurality of positioning holes 22 are equidistantly arranged on the left side of the groove 21, the positioning rod 5 is slidably connected to the inner wall of the groove 21, the transmission rod 51 is inserted into the inner part of the positioning rod 5, and the positioning rod 5 is slidably connected to the inner part of the groove 21. When the gas spring is used, the positioning rod 5 is slidably connected to the inner part of the groove 21, and since the transmission rod 51 is inserted into the inner part of the positioning rod 5, the limiting assembly 6 is fixedly installed on one side of the positioning rod 5, the first spring 55 is fixedly installed on the inner wall of the positioning rod 5, and the two clamping blocks 56 are movably connected to the lower end of the positioning rod 5. Thus, the transmission rod 51 is pressed to compress the first spring 55, the two clamping blocks 56 are extended outward into the positioning holes 22, and the transmission rod 51 is fixed through the limiting assembly 6, thereby limiting the movable rod 2.

[0031] The limiting slot 52 and the installation slot 53 are arranged on the inner wall of the positioning rod 5, and the transmission rod 51, the limiting block 54, the first spring 55 and the two clamping blocks 56 are installed. Since the inner side of the transmission rod 51 is in the shape of a “V”, one end of the first spring 55 is fixedly connected to the inner side of the limiting slot 52, and the other end of the first spring 55 is fixedly connected to one side of the limiting block 54, the transmission rod 51 is pressed to drive the limiting block 54 to compress the first spring 55, and the transmission rod 51 moves downward along the inner wall of the limiting slot 52, so that the bottom of the transmission rod 51 is in contact with the inner side of the two clamping blocks 56, thereby extending the two clamping blocks 56 outward into the positioning holes 22.

[0032] The four sliding grooves 531 are arranged on the left and right sides of the installation groove 53, and the four sliding blocks 561 and the four second springs 57 are installed through the four sliding grooves 531. The four sliding blocks 561 are fixedly installed on the left and right sides of the two clamping blocks 56, and the inner sides of the two clamping blocks 56 are inclined surfaces. The left and right ends of the four second springs 57 are fixedly connected with the four sliding grooves 531 and the four sliding blocks 561. When the transmission rod 51 moves downward, the bottom of the transmission rod 51 can contact the inner sides of the two clamping blocks 56. Under the action of the pressure, the two clamping blocks 56 can be pushed, and the four sliding blocks 561 can be driven to compress the four second springs 57 and extend outward along the four sliding grooves 531 to the positioning holes 22, so that the movable rod 2 can be positioned.

[0033] The connecting piece 61 in the limiting assembly 6 can be used for installing the plug rod 62, the limiting ring 63 and the third spring 64. The plug rod 62 is perpendicular to the clamping groove 511, and the inner side of the plug rod 62 is equal in size to the clamping groove 511. When the transmission rod 51 moves downward to a certain distance, the third spring 64 pushes the limiting ring 63 and drives the plug rod 62 to insert into the inside of the clamping groove 511 along the connecting piece 61, so that the transmission rod 51 can be fixed.

[0034] In summary, the device support 3, the positioning rod 5, the transmission rod 51, the first spring 55, the two clamping blocks 56 and the limiting assembly 6 can press the transmission rod 51 to compress the first spring 55, drive the two clamping blocks 56 to extend outward to the positioning holes 22, and fix the transmission rod 51 through the limiting assembly 6, so that the movable rod 2 can be positioned.

[0035] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

Claims

1. A gas spring with a limit protection function, comprising a tube (1), a movable rod (2) and two joints (4), the two joints (4) are installed at the lower end of the tube (1) and the upper end of the movable rod (2), characterized in that: The movable rod (2) is sleeved on the inner wall of the pipe body (1), the upper end of the pipe body (1) is fixedly installed with a support (3), the inside of the support (3) is fixedly connected with a positioning rod (5), the inside of the positioning rod (5) is inserted with a transmission rod (51), one side of the positioning rod (5) is fixedly installed with a limiting assembly (6), the inner wall of the positioning rod (5) is fixedly installed with a first spring (55), the lower end of the positioning rod (5) is movably connected with two clamping blocks (56). The outer end of the movable rod (2) is provided with a groove (21), a plurality of positioning holes (22) are equidistantly arranged on the left side of the groove (21), and the positioning rod (5) is slidably connected to the inner wall of the groove (21).

2. The gas spring with a limit protection function according to claim 1, characterized in that: The inner wall of the positioning rod (5) is provided with a limiting groove (52) and a mounting groove (53), the transmission rod (51) is inserted into the limiting groove (52), the two clamping blocks (56) are slidably connected to the inner wall of the mounting groove (53), the inner wall of the limiting groove (52) and located outside the transmission rod (51) is fixedly connected with a limiting block (54), and one side of the transmission rod (51) is provided with a clamping groove (511).

3. The gas spring with a limit protection function according to claim 1, characterized in that: The inner side of the transmission rod (51) is in the shape of "V", one end of the first spring (55) is fixedly connected with the inner side of the limiting groove (52), and the other end of the first spring (55) is fixedly connected with one side of the limiting block (54).

4. The gas spring with a limit protection function according to claim 2, characterized in that: The mounting groove (53) is in communication with the limiting groove (52), four sliding grooves (531) are arranged on the left and right sides of the mounting groove (53), and the left and right sides of the clamping block (56) are fixedly installed with a sliding block (561), and the four sliding blocks (561) are slidably connected in the four sliding grooves (531).

5. The gas spring with a limit protection function according to claim 4, characterized in that: The inner side of the clamping block (56) is inclined, four second springs (57) are fixedly connected to the inner wall of the sliding groove (531), and the other end of the four second springs (57) is fixedly connected with the inner side of the four sliding blocks (561).

6. The gas spring with a limit protection function according to claim 1, characterized in that: The limiting assembly (6) comprises a connecting piece (61), the connecting piece (61) is fixedly connected to one side of the positioning rod (5), the inside of the connecting piece (61) is inserted with a plug rod (62), the inner wall of the connecting piece (61) and located outside the plug rod (62) is fixedly installed with a limiting ring (63), and the inner wall of the connecting piece (61) and located on one side of the limiting ring (63) is fixedly connected with a third spring (64).

7. The gas spring with a limit protection function according to claim 6, characterized in that: The plug rod (62) is perpendicular to the clamping groove (511), and the inner side of the plug rod (62) is equal in size to the clamping groove (511).

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