KR101030331B1

KR101030331B1 - Device for adjusting length

Info

Publication number: KR101030331B1
Application number: KR1020100070441A
Authority: KR
Inventors: 김성수
Original assignee: 김성수
Priority date: 2010-07-21
Filing date: 2010-07-21
Publication date: 2011-04-20

Abstract

PURPOSE: A length adjustment device is provided to facilitate combining work between a fixed pillar and a length adjustment member. CONSTITUTION: A length adjustment device comprises a pillar insertion unit(100), an installation unit(200), a lever(400), a coupling bar(500), and a stopping plate(600). A pillar(1) having a control hole is inserted into the pillar insertion unit. The installation unit is connected to the pillar insertion unit. A hanging piece(226) is perpendicularly projected from the inner wall of the installation space. The lever locates outside the installation unit and is capable of movement and rotation. The coupling bar is connected to the lever and is capable of movement and rotation. In the stopping plate, a through-groove is formed on the girth thereof.

Description

Length adjusting device {DEVICE FOR ADJUSTING LENGTH}

The present invention relates to a length adjusting device installed on a desk or chair leg consisting of a fixed holding and a variable holding to control the length of the variable holding.

In recent years, the desk or chair legs having a height adjustment function, which has been widely spreading boards, are basically adjusted in a way that the variable supports are moved up and down while the variable supports are inserted into the fixed supports fixed to the ground. Height is adjusted while installed in a separate length adjustment device,

Existing length adjusting device is made of a structure that is coupled to and separated from the struts installed on one side of the case while moving back and forth linearly by a separate elastic means and lever in a state where the fastening rod is installed in the case.

Therefore, normally, the fastening rod is inserted into the strut, and the up and down movement of the strut is blocked. When the lever is pulled, the fastening rod comes out of the strut and the up and down movement of the strut is free.

However, such a conventional length adjusting device has only a structure in which the fastening rod is simply moved linearly back and forth, and there is no structure capable of maintaining a state separated from the prop.

Therefore, the user has a disadvantage in that the operation is inconvenient because the user can not only move the prop up and down with only the other hand while continuously pulling the lever with one hand.

In addition, during the manufacturing process of the desk or chair, even when the prop is inserted into the case, one hand has to pull the lever continuously, which makes it inconvenient.

In addition, the fastening rod does not have a structure that can control the unnecessary withdrawal of the fastening rod in the state penetrating the strut.

Therefore, if the fastening rod is undesiredly pulled by the external contact of the lever in the process of use, and is separated from the variable column, the desk or the chair may fall, causing a safety accident.

The present invention has been proposed to solve this problem,

It is to provide a length adjusting device that can be conveniently made to adjust the length of the shore.

In addition, it is intended to provide a length adjusting device that can prevent the unwanted length adjustment phenomenon of the shore by maintaining the fixed state between the support and the fastening rod.

The present invention proposed to achieve this object,

In the length adjustment device of the support which can change the length,

The support is inserted into the support post, the support insert is connected to the support insert is formed in the installation space is formed inside the installation space in which the engaging piece protruding formed on the inner wall surface, the lever is located outside the installation portion, one end of the lever And the other end is connected to the fastening rod fastened to the post after passing through the installation space and the support insert, the front end is in contact with the end of the engaging piece in the state coupled to the fastening rod and the through groove is formed in the edge Includes the edition.

And it may further include an elastic member connected to the locking plate.

In addition, the installation portion may include a first installation pipe connected to the support insert portion and the second installation pipe installed inside the first installation pipe and the engaging piece may be formed on the inner circumferential surface of the second installation pipe.

The installation unit may further include an insertion groove formed in at least one of the inner circumferential surface of the first installation pipe and the outer circumferential surface of the second installation pipe, and a fixing piece inserted into the insertion groove and connected to the second installation pipe.

delete

The locking piece may be formed at a point symmetrical with the insertion groove and the fixing piece.

In addition, a locking groove may be formed on a surface of the locking plate in contact with the locking piece.

The through grooves and the engaging grooves may be formed in a plural number alternately along the edge of the stopping plate.

According to each embodiment of the present invention,

Unnecessary withdrawal of the fastening rod is blocked by the locking phenomenon between the locking plate and the locking piece, and thus the prop is prevented from moving up and down undesirably, thereby preventing safety accidents.

In addition, the pull out state of the fastening rod can be maintained by the locking phenomenon between the locking plate and the locking piece, so that not only the length adjustment work but also the coupling work between the fixed support and the length adjustment member can be conveniently performed.

1 to 1 are views related to the first embodiment of the present invention.
1 is a full exploded perspective view
Figure 2 is a cross-sectional overall view
Figure 3 is a plan sectional view showing the structure of the installation portion
Figure 4 is a plan view showing the structure of the cross-sectional view showing a state where the position of the engaging piece through the groove and the mounting portion of the locking plate is shifted
5 and 6 are cross-sectional views showing a state that the locking plate is rotated
7 is a cross-sectional view showing a state where the locking plate and the fastening rod is drawn out;
8 is a view of a second embodiment of the present invention, a cross-sectional view showing a structure in which a second installation pipe and a cover are coupled using fastening pins.
Fig. 9 is a sectional view showing a structure in which the second installation pipe is omitted in the drawings relating to the third embodiment.
Fig. 10 is a sectional view in which the installation portion is applied as a housing structure in a view according to a fourth embodiment.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Like parts are designated by like reference numerals throughout the specification.

The length adjusting device presented in this embodiment is largely as shown in the [Fig. 1] to [Fig. 3], the holding insert portion 100 and the installation portion 200, the fastening rod 500, the locking plate 600 and The lever 400 is configured.

First, the post insertion portion 100 serves as an installation function of the post, and has a hollow tube shape and has a structure in which a first through hole 101 is formed on one side thereof, and the post 1 is installed in a state where the hollow portion passes.

The installation part 200 is installed in the support insertion part 100.

The installation unit 200 is a portion in which the installation function of the lever 400 and the locking plate 600 and the locking plate 600 which will be described later are formed, and the first installation pipe 210 and the second installation pipe ( 220).

Among them, the first installation pipe 210 has an open front face, and a second through hole 212 is formed on the rear face thereof, and an inner side of the first groove 214 is symmetrically formed to face each other. Formed structure.

At this time, the first concave-convex portion 216 is a simple concave-convex shape as shown in the figure, but may be implemented in the form of a thread.

The first installation pipe 210 is installed on the front surface of the support insertion portion 100 so that the second through hole 212 and the first through hole 101 are located on the same line.

In addition, the second installation pipe 220 has an outer diameter that is substantially the same as the inner diameter of the first installation pipe 210, and a third through hole 222 is formed on the rear surface thereof, and a rotation preventing piece 224 is formed on the outer circumferential surface thereof.

The second installation pipe 220 is inserted into the first installation pipe 210 is installed, and in this process, the anti-rotation piece 224 is fitted into the insertion groove 214, the second installation pipe 220 is Rotation in the first installation pipe 210 is prevented.

In addition, the inner peripheral surface of the second installation pipe 220 is formed with a locking piece 226 protruding, wherein the locking piece 226 is located at a point symmetrical with the anti-rotation piece 224 with the second installation pipe 220 therebetween. Is formed.

The reason for forming the locking piece 226 at the point facing the anti-rotation piece 224 is to easily install the locking plate 600 in the assembling process, more specific reason will be mentioned in the assembly description process to be described later.

For reference, although the locking pieces 226 are illustrated as two pieces, only one piece may be formed and three or more pieces may be formed at equal intervals.

In addition, the insertion groove 214 is formed on the outer circumferential surface of the second installation pipe 220 and the anti-rotation piece 224 is also formed in the structure to form on the inner circumferential surface of the first installation pipe 210 is possible.

That is, whether the insertion groove 214 is formed in any of the first, second installation pipes 210 and 220, the anti-rotation piece 224 and the second installation pipe 220 is connected to the second installation pipe 220 Any structure that can prevent rotation can be applied in various ways.

In this way, the installation unit 200 has a structure in which the installation space 201 is formed inside the multi-pipe structure.

The installation unit 200 has a cover 300 is installed.

The cover 300 serves as a support during the withdrawal of the lever 400 and the fastening rod 500, which will be described later, in which the inner diameter is almost the same as that of the outer diameter of the first installation pipe 210, and in the state in which the rear surface is opened. A fourth through hole 310 is formed at the center of the front surface, and a second uneven portion is formed at the inner surface thereof.

The cover 300 is installed in a form surrounding the front and outer circumference of the first installation pipe 210, that is, the first installation pipe 210 is inserted into the inside, the second uneven portion 320 is As the cover 300 is fitted into the first uneven portion 216, the cover 300 is fixed without being removed from the installation portion 200.

At this time, the second concave-convex part 320 basically consists of a simple concave-convex structure corresponding to the first concave-convex part 216 of the first installation pipe 210. If the first concave-convex part 216 is a screw thread, The uneven portion 320 is also applied to the thread.

If the cover 300 is made of a rubber material, it is not necessary to form the second concave-convex part 320, because the first concave-convex part in the process of forcing the cover 300 outside the first installation pipe 210. This is because the cover 300 is not easily detached because the 216 is lodged in the inner surface of the cover 300.

The cover 300 is coupled to the lever 400 and the fastening bar 500.

The lever 400 serves as an operating source of the length adjusting member, and is made of a hollow tube structure in which the rear side is opened like the cover 300, and has an inner diameter larger than the outer diameter of the cover 300.

The lever 400 is installed in a form surrounding the front and outer periphery of the cover 300, that is, the cover 300 is inserted into the lever 400.

At this time, since the inner diameter of the lever 400 is larger than the outer diameter of the cover 300 as mentioned above, the lever 400 is rotatable and moved back and forth about the cover 300 in a state of covering the cover 300. do.

In addition, the fastening rod 500 is an element having a function of substantially controlling the vertical movement of the support (1), a simple rod-like and consists of a structure in which the screw portion 510 is formed at the intermediate point.

The fastening rod 500 has a third end of the fourth through hole 310 and the second and first installation pipes 220 and 210 of the cover 300 in a state where one end is integrally connected to the inner front surface of the lever 400. After passing through the two through holes 222 and 212 and the first through hole 101 of the support inserting part 100, they are coupled to a control hole (not shown) of the support 1.

At this time, the fastening rod 500 allows the first through fourth through holes 101, 212, 222, 310 to loosely penetrate smoothly through the through holes 101, 212, 222, 310 during the operation process. Allow it to pass

The fastening bar 500 is provided with a locking plate 600.

The locking plate 600 functions to maintain the unnecessary withdrawal and withdrawal state of the fastening rod 500, and as shown in FIGS. 1 and 2, and 4, the inner diameter of the second installation pipe 220 is shown. The disk has a similar area and a coupling hole 610 is formed in the center, and a through groove 620 is formed on the edge.

In addition, the through grooves 620 are formed to have an area enough to allow the engaging piece 226 to pass therethrough, and two through holes 620 are formed at symmetrical sides.

For reference, since the number of formation of the through grooves 620 is the same as the number of the engaging pieces 226, one or three or more may be formed.

A locking groove 630 is formed between the through grooves 620 of the rear surface of the locking plate 600. The locking groove 630 has the same shape and area as the through groove 620, but unlike the through groove 620. It is formed in a structure recessed to a certain depth without penetrating the locking plate 600.

As the locking grooves 630 are formed between the through grooves 620, the locking grooves 630 and the through grooves 620 have a structure alternately formed along the edge of the locking plate 600.

The locking plate 600 is coupled to the coupling hole 610 is fastened to the fastening rod 500 is screwed.

In the state in which the fastening rod 500 is fastened to the support 1, the fastening rod 500 is positioned between the engaging piece 226 and the third through hole 222 of the installation space 201 of the installation part 200.

At this time, the fastening rod 500 is installed in a structure that is screwed to the screw portion 510 in a state passing through the coupling hole 610.

Therefore, when the lever 400 is moved back and forth, the fastening rod 500 and the locking plate 600 are moved back and forth together, and when the lever 400 is rotated, all have a structure that is rotated together.

In this state in which the locking plate 600 is located inside the first installation pipe 210, each through groove 620 is positioned in a state staggered with each of the locking pieces 226 as shown in FIG.

In this state, an elastic member 700 is installed inside the cover 300, and the elastic member 700 serves to automatically restore the position of the fastening rod 500 separated from the variable support 1, and a general spring. It is made of a structure and the one end is in contact with the front of the locking plate 600 and the other end is in contact with the front end of the cover in the state of being fitted between the locking plate 600 and the front section inside the cover 300 of the fastening rod 500. .

For reference, the elastic member 700 may be implemented in the form of a wire or plate having an elastic force in addition to the spring structure.

Next will be described the assembly process of this embodiment having such a configuration.

First, the first installation tube 210 is fixed on the support insert 100, and then the second installation tube 220 is inserted into the first installation tube 210. In this process, each rotation preventing piece 224 It is inserted into each of the insertion grooves 214 to prevent the rotation and withdrawal of the second installation pipe 220.

Then, the fastening rod 500 passes through the fourth through hole 310 of the cover 300 so that the cover 300 is inserted into the lever 400 and the elastic member 700 is coupled to the fastening rod 500. The fastening plate 600 is screwed to the threaded portion 510 of the fastening rod 500.

In this state, the locking plate 600 is inserted into the space between the locking piece 226 and the third through hole 222 of the installation space 201 of the installation unit 200. It should be put in a state where the position between each through groove 620 and each engaging piece 226 matched, but after the locking plate 600 passes through the engaging piece 226, between the engaging piece 226 and the third through hole 222. It can be moved to space.

At this time, since each locking piece 226 is formed on a point where the rotation preventing piece 224 is formed, the operator checks the position of the anti-rotation piece 224 before inserting the locking plate 600 into the installation space 201. After the rotation of the locking plate 600 is inserted in the state in which the through groove 620 is positioned in the anti-rotation piece 224, the through groove 620 naturally passes through the locking piece 226.

That is, the insertion groove 214 and the anti-rotation piece 224 of the first installation pipe 210 and the second installation pipe 220 also play a role of displaying the position of the locking piece 226.

In this way, the locking plate 600 is completely inserted into the installation space 201 and the cover 300 is wrapped around the outside of the first installation pipe 210. In this state, the locking plate 600 is separated by the engagement with the first uneven portion 216. Is prevented.

Hereinafter, the operation of the present embodiment thus installed and the unique effects generated in the process will be described.

[FIG. 2] is a view showing a state in which all the assembly is completed through the above installation process, that is, the length adjustment of the support (1) is completed,

In this state, the end of the fastening rod 500 passes through the installation part 200 in the state where the locking plate 600 is located in the space between the locking piece 226 and the third through hole 222, and then fastened to the support 1. As a result, the movement of the support 1 is blocked.

When you want to move the strut (1) up and down for height adjustment in this state, as shown in [Fig. 5] by pulling the lever 400 forward and slightly rotated at the same time fastening rod 500 and the locking plate 600 ) Is also rotated together.

In this process, the position of each through groove 620 as shown in FIG. 6 coincides with each of the engaging pieces 226, and at the same time as the locking plate 600 passes through the engaging pieces 226 as shown in FIG. 400 and the entire fastening rod 500 are drawn out, and in this process, the elastic member 700 is compressed by the locking plate 600.

The locking plate 600 passing through the locking piece 226 is positioned in the state in which the rear surface is in contact with the opposite end of the locking piece 226 and is separated from the support 1 while the fastening rod 500 is drawn out. ) Becomes a state in which the vertical movement is possible.

In this state, the lever 400 is rotated again at an angle so that the through groove 620 of the locking plate 600 is shifted from the locking piece 226 as shown in FIG. 4.

When the lever 400 is released in this state, the fastening rod 500 including the lever 400 and the locking plate 600 try to move back by the elastic force of the elastic member 700, but the locking plate 600 is caught. Since it is in the state which hung on the piece 226, the withdrawn state is maintained.

In addition, since the positions of the through grooves 620 and the locking pieces 226 are displaced and the positions of the locking pieces 226 and the locking grooves 630 coincide with each other, the ends of the locking pieces 226 are fitted into the locking grooves 630. Since unnecessary rotation of the lever 400 is prevented, a phenomenon in which the locking between the locking plate 600 and the locking piece 226 is released by unnecessary rotation of the lever 400 is prevented.

Therefore, the operator can adjust the length of the variable support (1) with both hands in the state in which the lever 400 is released, the length adjustment operation can be made much easier and safer.

That is, the present invention can maintain the pulled state by the locking structure between the locking plate 600 and the locking piece 226 in the pulled state, unlike the prior art, so that the length adjustment operation can be performed with both hands. It will be possible.

In addition, when the length of the support (1) is completed, if you want to fix the position of the support (1) by pulling the lever 400 forward slightly, the locking groove 630 is separated from the locking piece 226 and in this state the lever ( After turning a certain angle 400 again to match the position between the through groove 620 and the engaging piece 226 as shown in FIG.

When the lever 400 is released in this state, the locking plate 600 naturally moves through the locking piece 226 by the elastic force of the elastic member 700, and the lever 400 and the fastening bar 500 are also moved together again. 2] as the end of the fastening rod 500 is fitted to the support (1), the vertical movement of the support (1) is blocked.

Thereafter, by turning the locking plate 600 at an angle using the lever 400 to allow the through groove 620 and the locking piece 226 to be displaced, unnecessary withdrawal of the lever 400 is blocked.

That is, withdrawal of the lever 400 in the present invention is possible only after matching the position between the through groove 620 and the engaging piece 226 by rotating the locking plate 600. Therefore, even if the lever 400 is in contact with the outside in the process of use is not the phenomenon that the unwanted withdrawal does not occur.

Therefore, unlike the prior art, which is not provided with a structure that can control the unnecessary withdrawal of the lever has an advantage of preventing the accident that the top of the desk or the chair falls down due to the unnecessary withdrawal of the lever.

8 to 10 are views showing another modification of the present invention,

Among them, the embodiment shown in FIG. 8 has the same basic configuration as the previous embodiment, but the second installation pipe 220 is fixed to the cover 300 without being fixed to the first installation pipe 210. It is characterized by.

Specifically, the coupling pin 240 protruding from the front edge of the second installation pipe 220 in the state in which the second installation pipe 220 is simply inserted into the first installation pipe 210 is formed on the cover 300 It is made of a structure fitted to the ball 610.

At this time, the elastic pin 242 is formed at the end of the coupling pin 240 such as rubber so that the elastic pin 242 is compressed and passed in the process of passing through the coupling hole 610. The coupling pin 240 is manufactured in a structure that blocks the exit.

And another embodiment shown in Figure 9 is also the basic structure is the same as the previous two embodiments, but omitting the second installation pipe 220 of the mounting portion 200 and the engaging piece 226 is the first installation pipe ( 210) is formed on the inner peripheral surface.

That is, the installation unit 200 is changed to a single pipe structure instead of a double pipe structure.

In addition, the structure of the lever 400 may also be changed so that the cover 300 may not be wrapped, but may be manufactured as a simple plate.

For reference, the deformed structure of the cover 300 may be applied to the first embodiment described above.

And another embodiment shown in FIG. 10 is also an embodiment in which the structure of the installation unit 200 is modified,

The installation unit 200 is not a pipe structure, but implemented in a housing structure in which all four directions are blocked, and the installation unit 200 and the support insertion unit 100 are integrated.

In detail, the installation unit 200 has an installation space 201 formed therein and has a structure in which the engaging pieces 226 protrude from both side walls of the installation space 201, and the support 200 is formed on one side. Insertion portion 100 is integrally formed.

And in the state in which the elastic member 700 is located between the two locking pieces 226, the locking plate 600 is located in the space between the locking piece 226 and the support insertion portion 100 of the installation space 201, the fastening rod The 500 is installed in a structure that penetrates the elastic member 700, the locking plate 600, and the support insertion unit 100 in a state of being connected to the lever 400 located outside the installation unit 200.

In other words, the present embodiment can omit the cover, as well as the installation portion 200 and the support insert portion 100 can be molded at the same time has the advantage that the manufacturing is simplified.

Although various embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1: Shoring 100: Shoring insertion part
101: first hole 200: installation
201: installation space 210: first installation pipe
212: second hole 214: insertion groove
216: 1st uneven part 220: 2nd installation pipe
222: third through hole 224: anti-rotation piece
226: jam piece 300: cover
310: fourth through hole 320: second uneven part
400: lever 500: fastening rod
510: screw 600: locking plate
610: coupling hole 620: through groove
630: locking groove 700: elastic member
240: 242: elastic bundle

Claims

Shore insertion portion into which the strut with control hole is inserted,
An installation part connected to the support insertion part and having an installation space formed therein, and a locking piece protruding from the inner wall surface;
A lever located outside the installation unit and capable of rotating and moving back and forth,
One end is connected to the lever and can be rotated and moved forward and backward with the lever, and the other end of the fastening rod is inserted to be separated in the control hole of the support after passing through the installation space and the support insert,
The engaging plate is coupled to the fastening rod and can be rotated and moved forward and backward together with the fastening rod.
Length adjusting device comprising a.

In claim 1,
Length adjusting device further comprises an elastic member connected to the locking plate.

In claim 1,
The installation unit,
A first installation pipe connected to the support insert and a second installation pipe installed inside the first installation pipe,
The locking piece is formed on the inner peripheral surface of the second installation pipe
Length adjuster.

4. The method of claim 3,
The installation unit,
An insertion groove formed in at least one of the inner circumferential surface of the first installation pipe and the outer circumferential surface of the second installation pipe and a fixing piece inserted into the insertion groove and connected to the second installation pipe.
Length adjusting device further comprising.

delete

In claim 4,
The locking piece is formed at a point symmetrical with the insertion groove and the fixing piece
Length adjuster.

In claim 1,
Length adjusting device is formed with a locking groove on the surface in contact with the locking piece of the locking plate.

In claim 7,
The through groove and the engaging groove is a length adjusting device is formed alternately along the edge of the locking plate.