KR20060081305A - Gas cylinder and shock observing structure thereof - Google Patents

Abstract

The present invention relates to a gas cylinder for adjusting the height of a chair. More particularly, the present invention relates to a gas cylinder and a gas cylinder that can alleviate or absorb shock generated when a user is seated while the chair is at a predetermined height. It relates to a shock absorbing device.

The shock absorbing structure of the gas cylinder according to the present invention includes a base tube; A spindle inserted into the base tube to move up and down; A bound member including a spring inserted into and contracted by the base tube, a first support member coupled to an upper portion of the spring, and a second support member coupled to a lower portion of the spring; A piston member having one end inserted into the spindle and the other end coupled to the second support member.

By the gas cylinder and the gas cylinder shock absorbing device according to the present invention, even if the user is seated on the chair in a state where the height of the chair is located at a predetermined height or the lowest point, the cushion is generated by the shock absorbing device. Therefore, the user does not feel the impact when sitting. In addition, the cushion is generated when seating has the effect of protecting the user's spine.

Bound member, upper ring, lower ring, spring, spindle

Description

Gas cylinders and shock observing structure

1 is a cross-sectional view showing a gas cylinder with a shock absorbing device according to the spirit of the present invention.

2 is a perspective view showing a bound member according to the spirit of the present invention.

3 is a cross-sectional view showing a state where the spindle of the gas cylinder device according to the spirit of the present invention is located at the lowest point.

4 is a cross-sectional view illustrating a state where a user is seated in the state of FIG. 3.

5 is a cross-sectional view showing another embodiment of a gas cylinder according to the spirit of the present invention.

6 is a perspective view showing another embodiment of a bound member mounted to the gas cylinder;

7 and 8 are cross-sectional view showing the operation of the bound member of the second embodiment according to the spirit of the present invention.

<Description of Symbols for Main Parts of Drawings>

100 gas cylinder 110 base tube 120 tube guide

130: spindle 140: gas open pin 150: piston rod

160: buffer member 170: bearing 180: fixed pin

200: bound member 210: upper ring 220: spring

230: lower ring

The present invention relates to a gas cylinder for adjusting the height of a chair. More particularly, the present invention relates to a gas cylinder and a gas cylinder that can alleviate or absorb shock generated when a user is seated while the chair is at a predetermined height. It relates to a shock absorbing device.

In general, the gas cylinder applied to the chair is largely composed of a base tube and a gas spindle, the spindle of the gas cylinder is configured to move up and down to adjust the height of the chair seat. In addition, a piston and a piston rod are inserted into the spindle, and the inside of the spindle is partitioned into an upper chamber and a lower chamber by a piston. The piston rod is fixedly mounted to the lower end of the base tube.

However, since the piston rod is fixedly mounted to the lower end of the base tube in the case of a general gas cylinder structure, when the user is seated on the chair, an impact corresponding to the weight of the user is transmitted to the user through the gas cylinder. Therefore, the user has a problem that the user feels discomfort due to the shock when sitting. In particular, when the user is seated on the chair while the spindle is located at the lowest point, the impact is even greater.

The present invention has been proposed to solve the above problems, to provide a gas cylinder and a gas cylinder shock mitigation device that the shock is absorbed by the cushion when the user is seated while the chair is located at a predetermined height For the purpose of

In order to achieve the object as described above, the gas cylinder according to the present invention has a shock absorbing structure; A spindle inserted into the base tube to move up and down; A bound member including a spring inserted into and contracted by the base tube, a first support member coupled to an upper portion of the spring, and a second support member coupled to a lower portion of the spring; A piston member having one end inserted into the spindle and the other end coupled to the second support member.

In another aspect, the gas cylinder shock-absorbing structure according to the present invention includes a base tube; A spindle inserted into the base tube to move up and down; A piston rod having one end inserted into the spindle and having a piston mounted thereon; A tube guide fixedly mounted to an upper inner circumferential surface of the base tube to prevent the spindle from swinging laterally; An elastic member inserted into the base tube and having a predetermined elastic force, the elastic member including a long radius portion having a large diameter and a short radius portion smaller in diameter than the long radius portion; A first support member fitted over the elastic member; And a second support member fitted to the lower side of the elastic member.

In addition, the gas cylinder according to the present invention is a base tube; A spindle inserted into the base tube and filled with gas therein; An elastic member inserted into the base tube and extending and contracting by a predetermined length; And a ring member fitted to an upper end and a lower end of the elastic member.

By the above configuration, even if the user is seated in a state where the chair is at a predetermined height or the minimum height, the shock is easily absorbed and not transmitted to the user.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the spirit of the present invention is not limited to the embodiments presented, and other embodiments included within the scope of the inventive concept and other inventions can be easily added by adding, changing, or deleting other elements. I can suggest.

<First Embodiment>

1 is a cross-sectional view showing a gas cylinder with a shock absorbing device according to the spirit of the present invention.

Referring to Figure 1, the gas cylinder 100 is provided with a shock absorbing device according to the present invention is to adjust the height of the chair while forming a base tube 110 and the up and down reciprocating movement in the base tube 110 A tube guide 120 inserted between the spindle 130 and the spindle 130 and the base tube 110 to prevent the spindle 130 from swinging left and right in a vertical reciprocating motion, and the spindle Gas open pin 140 is inserted into the upper side of the 130 to control the discharge of the gas filled in the spindle 130, and the inside of the spindle 130 is inserted into the spindle 130 to the upper and A piston (not shown) partitioning downward and a piston rod 150 is mounted on the upper end.

In addition, the spacer 200 is mounted below the tube guide and the spacer is inserted between the bound member 200 and the tube guide 120 to prevent the bound member 200 from swinging up and down ( 240). In detail, the bound member 200 has a spring 220 that is wound a plurality of times with a predetermined elastic force, an upper ring 210 inserted into an upper outer circumferential surface of the spring 220, and a lower inner circumferential surface of the spring 220. The lower ring 230 is inserted. The lower end of the piston rod 150 passes through the central portion of the lower ring 230. In addition, the piston rod 150 and the lower ring 230 is coupled to the fixing pin 180 and the lower end of the piston rod 150 is inserted into the outer peripheral surface of the piston rod 150 to rotate without friction Helping bearing 170 and the cushioning member 160 is seated on the upper surface of the bearing 170 to absorb the shock generated when the spindle 130 is hit by falling. Here, the details of the bound member 200 will be described later with reference to the drawings.

Hereinafter will be described the operation for height adjustment of the gas cylinder 100 having the configuration as described above.

First, the seat of the chair is coupled to the upper end of the spindle 130. And, a lever is mounted on the bottom of the seat, the lever is assembled to press the gas open pin 140.

In detail, the gas open pin 140 is pressed when the user pushes or pulls up the lever while sitting on a chair. In addition, while the gas open pin 140 is lowered, the gas flows inside the spindle 130. In more detail, a cylinder is inserted into the spindle 130, and gas is filled in the cylinder. The cylinder is then partitioned into upper and lower chambers by the piston. And, since the outer diameter of the cylinder is smaller than the outer diameter of the spindle 130, a space is formed between the cylinder and the spindle 130. In addition, while the gas open pin 140 is lowered, the gas opening and closing pins contacting the lower end of the gas open pin are also lowered. When the gas opening / closing pin descends, the gas filled in the upper chamber of the cylinder descends through the space between the spindle 130 and the cylinder and moves to the lower chamber formed under the piston. Therefore, the spindle 130 is inserted into the base tube 110 while the upper chamber volume of the piston is reduced, so that the height of the chair is lowered.

On the other hand, when the user is seated on the chair while the chair is located at a predetermined height as described above, most of the weight corresponding to the user's weight is applied to the spindle 130. In addition, the weight applied to the spindle 130 is transmitted to the bound member 200. Then, the spring 220 forming the bound member 200 is stretched to absorb the shock so that the shock does not transfer to the user.

In particular, when the user is seated on the chair while the spindle 130 descends to the lowest point, the weight corresponding to the weight of the user is applied to the bound member 200, so that the bound member 200 You will be able to see the features more clearly.

2 is a perspective view showing a bound member according to the spirit of the present invention.

Referring to FIG. 2, the bound member 200 according to the present invention includes a spring 220 having a predetermined elastic force as described above, an upper ring 210 inserted into an upper outer circumferential surface of the spring 220, and A lower ring 230 is inserted into the lower inner circumferential surface of the spring 220.

In detail, the spring 220 is a compression spring, and pulls by applying force at both ends and then removes the force, thereby having a property of shrinking. In addition, a spiral nut part is formed on an inner circumferential surface of the upper ring 210 and an outer circumferential surface of the lower ring 230. Therefore, the upper ring 210 is rotated and fitted to the outer peripheral surface of the upper end of the spring 220, the lower ring 230 is fitted to the inner peripheral surface of the lower end of the spring 230. Here, when the user is seated on the chair, the spring 220 is tensioned, and as the spring 220 is tensioned, the diameter of the lower end of the spring 220 is narrowed. Therefore, when the lower ring 230 is fitted to the outer circumferential surface of the spring 220, the diameter of the spring 220 is narrowed, the spring 220 is released from the lower ring 230 occurs. Therefore, the lower ring 230 is inserted into the inner circumferential surface of the spring 220, it is preferable to further tighten the outer circumferential surface of the lower ring 230 when the spring 220 is tensioned. In addition, the bottom surface of the lower ring 230 forms a blocked shape, and a through hole for penetrating the piston rod 150 is formed in the center of the bottom surface.

On the other hand, between the upper ring 210 and the lower ring 230, the degree of cushioning occurs depending on the number of springs wound. Therefore, when the distance between the upper ring 210 and the lower ring 230 is far away, a cushion is formed large when seating on the chair, and when the distance is narrow, the cushion is small. By the characteristics as described above, in order to adjust the size of the generated cushion can be achieved by adjusting the distance of the lower ring 230 by adjusting the number of rotation of the upper ring (210).

3 is a cross-sectional view showing a state where the spindle of the gas cylinder device according to the spirit of the present invention is located at the lowest point, and FIG. 4 is a cross-sectional view showing a state where the user is seated in the state of FIG.

3 and 4, the bound member 200, which is a shock absorbing device according to the present invention, can effectively check the function when the user sits on a chair in a state where the spindle 130 is at its lowest point.

In detail, when no load is applied to the chair in a state where the spindle 130 is at the lowest point, the spring 220 of the bound member 200 is not extended and maintains its original state. However, when a load is applied to the chair while the spindle 130 is at its lowest point, the spring 220 is extended to generate an elastic force corresponding to the load. Then, the elongated spring 220 is slightly contracted by the force to return to the original state. As described above, the chair is swinged up and down several times while the original return force due to the extension of the load and the property of the spring 220 are alternately formed. That is, a cushion is generated from the bound member 200 in the process of seating a person in a chair.

Meanwhile, the bound member 200 is first inserted into the base tube 110 before inserting the tube guide 120 and the spacer 240. The spring 220 and the lower ring 230 are lowered into the base tube 110 because they are smaller than the inner diameter of the base tube 110. In addition, since the diameter of the upper ring 210 is formed to be substantially the same as the inner diameter of the base tube 110, it is inserted along the inner circumferential surface of the base tube 110. Here, the base tube 110 is formed with a tapered portion 111 that narrows the diameter from the point to a lower end from a certain distance from the upper end. That is, the outer circumferential surface from the bent portion 112 where the taper portion 111 of the base tube 110 starts to the lower end portion is inclined in the direction of the central axis by a vertical line and a predetermined angle φ. Accordingly, the upper ring 210 descends to the bent portion 112 where the tapered portion 111 starts from the inside of the base tube 110. Then, the bent portion 112 is caught and can no longer descend. Therefore, the lower ring 230 is maintained in the form floating in the inner space of the base tube (110). In addition, the spacer 240 and the tube guide 120 are sequentially inserted into the upper end of the upper ring 210, and the tube guide 120 is fixed to the upper surface of the base tube 110. Therefore, the upper ring 210 is no longer swinged up and down inside the base tube 110.

By the above configuration, when the user is seated on the chair, the spring 220 is extended to a predetermined length, the lower ring 230 is to move up and down in the space between the bottom surface of the base tube 110. In addition, since the diameter of the lower end portion is narrowed while the spring 220 is extended, the lower ring 230 inserted into the inner circumferential surface of the spring 220 is more closely adhered to the inner circumferential surface of the spring 220.

Second Embodiment

5 is a cross-sectional view showing another embodiment of a gas cylinder according to the spirit of the present invention, Figure 6 is a perspective view showing another embodiment of the bound member mounted to the gas cylinder.

5 and 6, the bound member 300 according to another embodiment of the present invention is divided into a long radius A and a short radius B of which the radius of the spring 320 is large. It is characterized by.

Hereinafter, description of the same components as those described in FIGS. 1 to 4 among the components of the gas cylinder 100 will be omitted.

In detail, in the present invention, the bound member 300 is inserted into an outer circumferential surface of the spring 320 and the short radius portion B having the largest radius A and the smallest radius B having the smallest radius B. The upper ring 310 and the lower ring 330 is inserted into the inner peripheral surface of the lower end of the short radius (B).

In more detail, the spring 320 is composed of a long radius portion (A) from the upper end, and a short radius portion (B) formed from the lower end to the lower end of the long radius (A). In the first embodiment, the gap between the upper ring 210 and the lower ring 230 is adjusted according to the number of times the upper ring 210 is wound on the spring 220 to adjust the size of the cushion. It is characterized by. However, in the second embodiment, the nut part is not formed on the inner circumferential surface of the upper ring 310. That is, the inner diameter of the upper ring 310 is the same as the outer diameter of the short radius portion (B), the inner peripheral surface is formed smoothly. Therefore, the upper ring 310 is pushed up from the bottom of the spring 320. Then, the upper surface of the upper ring 310 is caught at the lower end of the long radius portion (A) of the spring (320). Therefore, the long radius portion A of the spring 320 serves to prevent the upper ring 310 from being removed to the upper side of the spring 320. The upper ring 310 is formed to have a narrower width than the upper ring 210 of the first embodiment, so that the number of windings of the spring 320 inserted into the inner circumferential surface of the upper ring 310 is smaller than that of the first embodiment. do. In the case of the upper ring 310 having the above configuration, the manufacturing cost is reduced and the manufacturing process is simpler than the upper ring 320 of the first embodiment, while the same function as that of the bound member 200 of the first embodiment is achieved. There is an advantage to be exercised.

 In order to adjust the size of the cushion in the second embodiment can be achieved by adjusting the length of the long radius (A) and the short radius (B). In other words, increasing the number of turns of the long radius A and decreasing the number of turns of the short radius B narrows the gap between the upper ring 310 and the lower ring 330. Therefore, the cushion amount of the bound member 300 is reduced. As the length of the long radius A increases, the length of the spacer 240 is shortened.

7 and 8 are cross-sectional views showing the operation of the bound member of the second embodiment according to the spirit of the present invention, the function and operation are the same as described in Figures 3 and 4 will not be described.

By the gas cylinder and the gas shock absorbing device of the present invention having the configuration as described above, even if the user is seated on the chair in a state where the height of the chair is located at the lowest point, the cushion is generated by the shock absorbing device. Therefore, the user does not feel the impact when sitting. In addition, the cushion is generated when seating has the effect of protecting the user's spine.

Claims (23)

Base tube; A spindle inserted into the base tube to move up and down; A bound member including a spring inserted into and contracted by the base tube, a first support member coupled to an upper portion of the spring, and a second support member coupled to a lower portion of the spring; And a piston member having one end inserted into the spindle and the other end coupled with the second support member. The method of claim 1, The first support member is a shock absorbing structure of the gas cylinder, characterized in that the nut portion for fitting the spring is formed on the inner peripheral surface. The method of claim 1, A space member fitted to an upper side of the first support member to prevent the bound member from swinging up and down; And a tube guide inserted into an upper side of the space member and fixedly mounted to an inner circumferential surface of the base tube. The method of claim 1, The outer diameter of the first support member is at least the same as the inner diameter of the base tube shock relief structure of the gas cylinder. The method of claim 1, The base tube is a shock-absorbing structure of the gas cylinder, characterized in that the tapered portion is formed to narrow the diameter from the upper end to the lower end at a predetermined distance. The method of claim 5, And the first support member is caught at a point where the taper portion of the base tube starts. The method of claim 1, The second support member is inserted into the inner circumferential surface of the spring, the impact relief structure of the gas cylinder, characterized in that the nut portion for fitting the spring is formed on the outer circumferential surface. The method of claim 1, And a diameter of the second support member is smaller than that of the first support member. The method of claim 1, The second support member is a shock absorbing structure of the gas cylinder, characterized in that a hole for penetrating the piston member is formed in the bottom surface. The method of claim 1, And said bound member has a length at which a lower end of said spring is spaced a predetermined distance from a bottom surface of said base tube in a state in which it is mounted in said base tube. The method of claim 1, The interval between the first support member and the second support member is adjusted by adjusting the number of rotations of the first support member, and the bound member according to the number of turns of the spring between the first support member and the second support member. The cushioning structure of the gas cylinder, characterized in that the size of the cushion having. The method of claim 1, The spring has a long radius of the largest radius, And a short radius portion formed from the long radius portion by a predetermined length downward and smaller than the radius of the long radius portion. The method of claim 12, The first support member is a gas cylinder shock relief structure, characterized in that the inner circumferential surface is formed smoothly, the inner diameter is in the form of a ring formed the same as the outer diameter of the short radius portion of the spring. The method of claim 13, The first support member is a shock-absorbing structure of a gas cylinder, characterized in that the spring is pushed into the lower end of the long radius portion from the lower side. Base tube; A spindle inserted into the base tube to move up and down; A piston rod having one end inserted into the spindle and having a piston mounted thereon; A tube guide fixedly mounted to an upper inner circumferential surface of the base tube to prevent the spindle from swinging laterally; An elastic member inserted into the base tube and having a predetermined elastic force, the elastic member including a long radius portion having a large diameter and a short radius portion smaller in diameter than the long radius portion; A first support member fitted over the elastic member; And And a second support member fitted to the lower side of the elastic member. The method of claim 15, And the first support member is fitted to an outer circumferential surface of the long radius portion. The method of claim 15, And the second support member is fitted to an inner circumferential surface of the short radius portion. The method of claim 15, The tube guide is shock-absorbing structure of the gas cylinder, characterized in that seated on the upper end of the long radius portion. The method of claim 15, And a fastening member for fastening the other end of the piston rod and the bottom surface of the second support member. The method of claim 15, The base tube has a bent portion that is inclined a predetermined angle in the direction of the central axis from a point that is a predetermined distance from the lower end, The first support member is a shock-absorbing structure of the gas cylinder, characterized in that the lower end is supported by the bent portion. Base tube; A spindle inserted into the base tube and filled with gas therein; An elastic member inserted into the base tube and extending and contracting by a predetermined length; And a ring member fitted to an upper end and a lower end of the elastic member. The method of claim 21, The elastic member is a gas cylinder, characterized in that the compression spring is retracted to the original position when the force is removed in the extended state by applying force to both ends. The method of claim 21, At least one ring member is a gas cylinder, characterized in that inserted into the elastic member.

Images