Nitrogen spring convenient to maintain

Abstract

The utility model discloses a nitrogen spring convenient to maintain, and relates to the field of gas springs. The device comprises a nitrogen spring mechanism, the nitrogen spring mechanism comprises a cylinder body and an air inlet valve part easy to disassemble, a sliding cavity is formed in the bottom of the cylinder body, a limiting fixing groove is formed in the inner wall of the sliding cavity, a spring is further arranged in the sliding cavity, one end of the spring is fixedly connected with a sealing ring, and the air inlet valve part easy to disassemble is slidably connected in the sliding cavity. The sealing ring abuts against the easily-detachable air inlet valve piece, the two ends of the easily-detachable air inlet valve piece are fixedly connected with sliding blocks, and the sliding blocks are movably clamped in the limiting fixing grooves. According to the device, the easy-to-disassemble air inlet valve piece which does not need threaded connection is arranged, the easy-to-disassemble air inlet valve piece can be assembled and disassembled only by pressing and screwing the knob block, and meanwhile, the sealing effect is good through cooperation of the sealing ring and the fixing ring block; and the situation that the fixed part is damaged by pressure difference caused by high air pressure in the cylinder is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas spring technical field, concretely is a nitrogen gas spring convenient to maintain. BACKGROUND

[0002] Nitrogen gas spring is a new type of elastic component with high pressure nitrogen as working medium, it is small, big elastic force, long stroke, work stable, manufacture precision, long service life, elastic force curve stable, and does not need pre-tightening etc.

[0003] The existing nitrogen gas spring generally adopts the cooperation of the bolt and the air inlet valve to fix the air inlet valve at the bottom of the nitrogen gas spring, but this fixing mode will make the bolt suffer the gas pressure from the inside of the spring piece to the outside in the horizontal direction of the thread, which will cause the damage of the thread under the long-term high pressure environment, greatly reduce the sealing performance, and cause the fixing to be loose, and the frequent disassembly and assembly of the bolt will also cause the damage of the thread. In view of the above situation, the utility model provides a nitrogen gas spring convenient to maintain to solve the above problems. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, the utility model provides a nitrogen gas spring convenient to maintain, solves the problems that the existing nitrogen gas spring generally adopts the cooperation of the bolt and the air inlet valve to fix the air inlet valve at the bottom of the nitrogen gas spring, but this fixing mode will make the bolt suffer the gas pressure from the inside of the spring piece to the outside in the horizontal direction of the thread, which will cause the damage of the thread under the long-term high pressure environment, greatly reduce the sealing performance, and cause the fixing to be loose, and the frequent disassembly and assembly of the bolt will also cause the damage of the thread.

[0005] To achieve the above purpose, the utility model is realized by the following technical scheme: a nitrogen gas spring convenient to maintain, including nitrogen gas spring mechanism, the nitrogen gas spring mechanism includes cylinder and easily detachable air inlet valve piece, the bottom of cylinder is equipped with sliding chamber, the inner wall of sliding chamber is equipped with limiting fixed slot, the inside of sliding chamber is also provided with spring, one end of spring is fixedly connected with sealing ring, the easily detachable air inlet valve piece is connected in sliding chamber, the sealing ring is opposite to the easily detachable air inlet valve piece, the both ends of easily detachable air inlet valve piece are fixedly connected with sliding block, the sliding block is movably clamped in limiting fixed slot, the easily detachable air inlet valve piece is fixedly connected in limiting fixed slot through spring.

[0006] Preferably, the bottom end of the cylinder is also provided with an air inlet chamber, and the easily detachable air inlet valve piece comprises an air inlet valve body, the air inlet valve body is used for injecting nitrogen into the air inlet chamber.

[0007] Preferably, a fixed ring is fixedly connected between the sliding chamber and the air inlet chamber, one end of the spring is fixedly connected to the sealing ring, and the other end of the spring is fixedly connected to the fixed ring, and the fixed ring is used for fixing the spring.

[0008] Preferably, sliding long grooves are formed on the upper and lower sides of the sliding chamber, the sliding block is installed into the sliding chamber through the sliding long grooves, an arc groove is formed on one side of the sliding long groove, and the limiting fixed groove is formed at the other end of the arc groove, and the sliding block is slidably connected into the limiting fixed groove through the arc groove.

[0009] Preferably, the detachable air inlet valve further comprises a fixed ring block, the air inlet valve body is installed at the front end of the fixed ring block, the sealing ring abuts against the fixed ring block, the sealing ring, the fixed ring block and the air inlet valve body form a closed space, and the sliding block is fixedly connected to the upper and lower ends of the fixed ring block.

[0010] Preferably, a sealing cover is fixedly connected to the front end of the fixed ring block, a knob block is fixedly connected to the front end of the sealing cover, the knob block is used for rotating the fixed ring block, an air inlet nozzle is formed at the axis of the knob block, and the air inlet nozzle is used for spraying nitrogen into the air inlet chamber through the air inlet valve body.

[0011] Preferably, the nitrogen spring mechanism further comprises a piston column and an end cover, the piston column is slidably connected in the cylinder body, the piston column is fixedly connected in the end cover, and the end cover is slidably connected in the cylinder body.

[0012] The nitrogen spring convenient to maintain has the advantages that: the nitrogen spring convenient to maintain is provided with a detachable air inlet valve which does not need to be threadedly connected, and the installation and dismounting of the detachable air inlet valve can be completed by only pressing and rotating the knob block, so that the nitrogen spring is convenient to use, the sealing effect is good due to the cooperation of the sealing ring and the fixed ring block, and the fixed part is not damaged due to the pressure difference caused by the large cylinder gas pressure. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0014] Figure 1 It is a whole front structure schematic view of the present application;

[0015] Figure 2 It is a whole cross-section structure schematic view of the present application.

[0016] Figure 3 It is the partial section structure schematic view of the utility model;

[0017] Figure 4 It is the section plan view structure schematic view of the utility model;

[0018] Figure 5 It is the detail structure schematic view of the utility model easy-to-disassemble air inlet valve.

[0019] In the figure: 1, nitrogen spring mechanism;11, cylinder body;111, sliding chamber;112, air inlet chamber;113, sliding long groove;114, arc groove;115, limit fixed groove;116, fixed ring;117, spring;118, sealing ring;12, piston column;13, end cover;14, easy-to-disassemble air inlet valve;141, fixed ring block;142, sealing cover;143, knob block;144, air inlet nozzle;145, sliding block;146, air inlet valve body. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0021] The nitrogen gas spring provided by the embodiment of the application is convenient to maintain, solves the problem that the existing nitrogen gas spring generally adopts the cooperation of a bolt and an air inlet valve to fix the air inlet valve at the bottom of the nitrogen gas spring, but the fixing mode can make the bolt be subjected to the gas pressure from the inside of the spring to the outside in the horizontal direction of the thread, and long-term high-pressure environment can cause damage to the thread, greatly reduce the sealing performance, cause the fixation to be loose, and the frequent disassembly and assembly of the bolt can also cause damage to the thread.

[0022] In order to better understand the above technical scheme, the above technical scheme will be described in detail in combination with the drawings of the specification and specific embodiments.

[0023] The utility model embodiment discloses a nitrogen gas spring convenient to maintain. EMBODIMENT

[0024] According to the drawings, Figures 1-5 As shown,

[0025] The nitrogen spring mechanism 1 comprises a cylinder 11 and a detachable air inlet valve 14, the bottom of the cylinder 11 is provided with a sliding chamber 111, a limiting fixed groove 115 is formed in the inner wall of the sliding chamber 111, a spring 117 is further arranged in the sliding chamber 111, one end of the spring 117 is fixedly connected with a sealing ring 118, the detachable air inlet valve 14 is slidingly connected in the sliding chamber 111, the sealing ring 118 abuts against the detachable air inlet valve 14, sliding blocks 145 are fixedly connected at two ends of the detachable air inlet valve 14, the sliding blocks 145 are movably clamped in the limiting fixed groove 115, the detachable air inlet valve 14 is fixedly connected in the limiting fixed groove 115 through the spring 117, sliding long grooves 113 are formed in the upper and lower sides of the sliding chamber 111, the sliding blocks 145 are installed into the sliding chamber 111 through the sliding long grooves 113, an arc groove 114 is formed at one side of the sliding long groove 113, the limiting fixed groove 115 is formed at the other end of the arc groove 114, and the sliding blocks 145 are slidingly connected into the limiting fixed groove 115 through the arc groove 114.

[0026] In use, the detachable air inlet valve 14 is pressed into the sliding chamber 111, the sliding blocks 145 are slidingly connected in the sliding long grooves 113 and abut against the sealing ring 118, then the detachable air inlet valve 14 is continuously pressed to compress the spring 117, until the sliding blocks 145 are slidingly connected to the end of the sliding long grooves 113, then the detachable air inlet valve 14 is rotated to make the sliding blocks 145 rotate and slide in the arc groove 114 until the sliding blocks 145 slide to the end of the arc groove 114, then the hand is released, and the sliding blocks 145 slide into the limiting fixed groove 115 to be fixed under the elastic potential of the spring 117.

[0027] The bottom end of the cylinder 11 is further provided with an air inlet chamber 112, the detachable air inlet valve 14 comprises an air inlet valve body 146, the air inlet valve body 146 is used for injecting nitrogen into the air inlet chamber 112, after the air inlet chamber 112 is filled with nitrogen, the sealing ring 118 abuts against the detachable air inlet valve 14 tightly under the internal and external air pressure difference and the elastic potential of the spring 117, so that the nitrogen in the inside cannot leak to the outside.

[0028] The sliding chamber 111 and the air inlet chamber 112 are fixedly connected with a fixed ring 116, one end of the spring 117 is fixedly connected on the sealing ring 118, the other end of the spring 117 is fixedly connected on the fixed ring 116, and the fixed ring 116 is used for fixing the spring 117. Embodiment

[0029] On the basis of the first embodiment, according to the drawings, Figures 1-5 As shown,

[0030] The easily detachable air inlet valve 14 further comprises a fixed ring block 141, the air inlet valve body 146 is installed at the front end of the fixed ring block 141, the sealing ring 118 abuts against the fixed ring block 141, the sealing ring 118, the fixed ring block 141 and the air inlet valve body 146 form a closed space, the sliding block 145 is fixedly connected to the upper and lower ends of the fixed ring block 141, and after being filled with nitrogen, the nitrogen in the inside cannot be leaked to the outside due to the close abutment of the sealing ring 118 and the fixed ring block 141 under the internal and external air pressure difference and the elastic potential energy of the spring 117.

[0031] The front end of the fixed ring block 141 is fixedly connected with a sealing cover 142, the front end of the sealing cover 142 is fixedly connected with a knob block 143, the knob block 143 is used for rotating the fixed ring block 141, the air inlet nozzle 144 is arranged at the shaft center of the knob block 143, the air inlet nozzle 144 is used for spraying nitrogen into the air inlet chamber 112 through the air inlet valve body 146, and when nitrogen needs to be supplemented, the air gun nozzle is inserted into the air inlet nozzle 144 for supplementing air.

[0032] The nitrogen spring mechanism 1 further comprises a piston column 12 and an end cover 13, the piston column 12 is slidingly connected in the cylinder body 11, the piston column 12 is fixedly connected in the end cover 13, and the end cover 13 is slidingly connected in the cylinder body 11.

[0033] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only used to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A nitrogen spring that is easy to maintain, comprising a nitrogen spring mechanism (1), characterized in that, The nitrogen spring mechanism (1) includes: The cylinder (11) has a sliding chamber (111) at the bottom. A limit fixing groove (115) is provided on the inner wall of the sliding chamber (111). A spring (117) is also provided in the sliding chamber (111). A sealing ring (118) is fixedly connected to one end of the spring (117). The easily detachable intake valve (14) is slidably connected in the sliding chamber (111). The sealing ring (118) abuts against the easily detachable intake valve (14). The two ends of the easily detachable intake valve (14) are fixedly connected to sliders (145). The sliders (145) are movably engaged in the limiting and fixing groove (115). The easily detachable intake valve (14) is fixedly connected in the limiting and fixing groove (115) by a spring (117).

2. The nitrogen spring for easy maintenance according to claim 1, characterized in that: The cylinder (11) is also provided with an air intake chamber (112) at the bottom end. The easily detachable air intake valve (14) includes an air intake valve body (146), which is used to inject nitrogen into the air intake chamber (112).

3. A nitrogen spring for easy maintenance according to claim 2, characterized in that: A fixing ring (116) is fixedly connected between the sliding chamber (111) and the air intake chamber (112). One end of the spring (117) is fixedly connected to the sealing ring (118), and the other end of the spring (117) is fixedly connected to the fixing ring (116). The fixing ring (116) is used to fix the spring (117).

4. A nitrogen spring for easy maintenance according to claim 1, characterized in that: The sliding chamber (111) has sliding grooves (113) on both the upper and lower sides. The slider (145) is installed into the sliding chamber (111) through the sliding grooves (113). An arc groove (114) is provided on one side of the sliding groove (113). The limiting and fixing groove (115) is provided at the other end of the arc groove (114). The slider (145) is slidably connected into the limiting and fixing groove (115) through the arc groove (114).

5. A nitrogen spring for easy maintenance according to claim 2, characterized in that: The easily detachable intake valve component (14) also includes a fixed ring block (141), the intake valve body (146) is installed at the front end of the fixed ring block (141), the sealing ring (118) abuts against the fixed ring block (141), the sealing ring (118), the fixed ring block (141) and the intake valve body (146) form a sealed space, and the slider (145) is fixedly connected to the upper and lower ends of the fixed ring block (141).

6. A nitrogen spring for easy maintenance according to claim 5, characterized in that: A sealing cover (142) is fixedly connected to the front end of the fixed ring block (141), and a knob block (143) is fixedly connected to the front end of the sealing cover (142). The knob block (143) is used to rotate the fixed ring block (141). An air inlet (144) is provided at the axis of the knob block (143). The air inlet (144) is used to spray nitrogen gas into the air inlet chamber (112) through the air inlet valve body (146).

7. A nitrogen spring for easy maintenance according to claim 1, characterized in that: The nitrogen spring mechanism (1) further includes: Piston column (12), which is slidably connected inside cylinder (11); End cap (13), the piston rod (12) is fixedly connected inside the end cap (13), and the end cap (13) is slidably connected inside the cylinder (11).

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