KR200316205Y1 - Height controller apparatus for legs of desk and chair - Google Patents

Abstract

The present invention relates to a height adjusting device for a desk and a chair. Height adjusting device according to the present invention, the lower leg 36 is formed in a tubular shape, the through-hole 36a is formed on the upper side; An upper leg 34 which is inserted into the lower leg, supports the upper plate or the sheet part 32, and the plurality of position holes 34a are formed in the longitudinal direction; In addition, the assembling hole 42 assembled on the upper side of the lower leg and formed to allow the upper leg to enter, the insertion hole H1 communicating with the inner wall of the assembling hole, intersects and communicates with the upper or lower side of the insertion hole. Fixing means consisting of a fixing hole (H2) to be assembled, the fixing body 44 is rotatably assembled in the fixing hole, and the locking body 46 to move in a horizontal direction through the insertion hole by the rotation of the fixing body. It is characterized by including 40. According to the present invention, the user can easily adjust to the desired height, and provides a height adjusting device for the desk and chair that can maintain the height of the adjusted state firmly by preventing the fixing means is easily separated by the external impact It becomes possible.

Description

Height controller apparatus for legs of desk and chair}

The present invention relates to a height adjusting device for a desk and a chair, and more specifically, the desk or chair can be freely adjusted to have various heights, and by making it possible to firmly fix a leg adjusted to a certain height. The present invention relates to a height adjusting device for a desk and a chair configured to freely adjust the height according to various user's physical conditions by external influences.

Generally, desks and chairs are widely used in schools, academies, offices, and homes. Most of these desks and chairs are important furniture for users to spend the day. Therefore, it is obvious that the desk or chair should be configured to suit the physical condition of the user so as to minimize fatigue in studying or carrying out work for a long time.

As mentioned above, in using a desk or chair, it is known that the height of the desk or chair is important for maintaining a correct and comfortable posture. The height of the desk or chair is determined by a number of legs configured to stand upright on the floor.

However, the desk 10 and the chair 20 which are generally used in schools, academies, etc., as shown in Figure 1, the support portion 12, 22 for supporting the lower side of the upper plate 16 and the seat 26, respectively It is configured, and both sides are bent downward based on the support (12, 22) to form the legs (14, 24). The legs 14 and 24 are fixed at a constant height, and height adjustment is impossible. The desk 10 and the chair 20 having the legs 14 and 24 are separately manufactured to have various heights. For example, a user with a short height may select and use a desk 10 and a chair 20 with short legs 14 and 24, and a user with a long height may select a desk 10 with a long leg 14 and 24. The chair 20 will be used to select. As a result, the fast-growing youths often use desks and chairs that are suitable for their height, or use the desks and chairs that are not suitable for their kidneys.

The present invention is to solve the problems of the desk and the chair is fixed as described above, the main object is to provide a height adjusting device of the desk and chair configured to easily adjust the height of the legs.

In addition, another object of the present invention is to provide a configuration of the height adjusting device of the desk and chair so that the user can be firmly endured legs adjusted to the desired height.

Another object of the present invention is to provide a height adjusting device for a desk and a chair to facilitate the user's convenience by facilitating operation with a simple configuration.

1 is a perspective view of a typical desk and chair.

Figure 2 is an exploded perspective view of a chair having a height adjustment device according to the present invention.

Figure 3a is a perspective view from the right side in the state in which the fixing means of the height adjustment device according to the present invention.

Figure 3b is a perspective view from the left in the state disassembled the fixing means of the height adjustment device according to the present invention.

Figure 4 is a partial cross-sectional view for showing the separated state of the upper leg and lower leg having a fixing means according to the present invention.

Figure 5 is a cross-sectional view of the height adjustment device according to an embodiment of the present invention.

Detailed description of the main parts of the drawings

34 .... Upper leg 34a ..... Positioning hole

36 ..... Lower leg 36a ..... through-hole

40 ..... Fastening means 42 ..... Assembly holes

H1 ..... Insertion hole H2 ..... Fixing hole

44 ..... Jamming 44S ..... Threaded section

46 ..... Fixture 47 ..... Guide Bar

46 d .... guide hole 46 c ..... body

46b ..... fixed ribs W ..... spring washers

36g ..... Guide ribs 34g .....

The height adjusting device of the desk and chair for achieving the object of the present invention as described above, is configured in the form of a tube, the lower leg is formed in the through hole on the upper side; An upper leg which is inserted into the lower leg, supports an upper plate or a sheet portion, and has a plurality of position holes formed in the longitudinal direction; And, the assembling hole is assembled on the upper side of the lower leg and formed so that the upper leg can enter, the insertion hole communicating with the inner wall of the assembling hole, the fixing hole intersecting and communicating with the upper or lower side of the insertion hole, The technical gist of the present invention includes a fixing means which is assembled to the fixing hole and is rotatable, and includes a locking body that linearly moves in the transverse direction through the insertion hole by the rotation of the fixing body.

In addition, a part of the locking body is formed with a threaded threaded portion, and the front portion has a protrusion portion inserted into and out of the position hole of the upper leg.

The fixed body for linearly moving the locking body forward and backward includes: a body having teeth formed in the longitudinal direction so as to be engaged with the threaded portion of the locking body; The handle is configured on one side of the body, the guide bar is assembled on the other side. One side of the guide bar is fixed by the outer wall of the fixing hole, the other side is assembled so as not to be inserted into the guide hole formed in the inner side of the body.

In addition, at least one fixing rib is formed at the connection portion of the handle and the body, and a fixing groove is formed at an outer portion of the fixing hole so that the fixing rib is seated.

According to one embodiment of the present invention, it is also possible to further configure the guide ribs and guide grooves in the upper leg and the lower leg or fixing means, respectively. This is to allow the upper leg to be inserted into the lower leg, as well as to easily communicate with the through hole and the position hole to fix using a fixing means.

According to another embodiment of the present invention, it is also possible to arrange the position holes of the upper leg at equal intervals or gradually spaced apart.

Height adjustment device for desks and chairs according to the present invention, it is preferable that the user having a variety of physical conditions and fast growth rate is composed of a fixing means having a fixed button of the rotary button type that can easily adjust the height Able to know.

Next, the present invention will be described in more detail with reference to the embodiments shown in the drawings.

Figure 2 shows an exploded perspective view of a chair having a height adjustment device according to the present invention, Figures 3a and 3b is a perspective view showing a state in which the fixing means of the height adjustment device according to the present invention, Figure 4 Figure 5 shows a partial cross-sectional view of the upper leg and the lower leg is separated state having a fixing device according to the present invention.

Hereinafter, the height adjusting device of the desk and chair 30 according to the present invention, will be described based on the embodiment applied to the chair as shown in FIG.

First, the height adjustment device is composed of a lower leg 36 and the upper leg 34 having a predetermined length, and the fixing means 40 for fixing the lower leg and the upper leg by coupling.

The lower leg 36 is configured in a tubular shape, the through-hole 36a is formed on the upper side. The upper leg 34 is inserted into the lower leg 36 to support the sheet portion 32, and a plurality of position holes 34a are formed in the longitudinal direction. At this time, it is preferable that the outer diameter of the upper leg 34 is smaller than the inner diameter of the lower leg 36. Of course, when fixing the fixing means 40 to the upper leg 34, the outer diameter of the lower leg 36 can be configured to be smaller than the inner diameter of the upper leg 34. However, in order to assemble to have a more sense of stability, as shown in the drawings, the fixing means 40 is configured on the lower leg 36, and the upper leg 34 is placed inside the lower leg 36, and thus the upper leg. Naturally, the outer wall of the 34 and the inner wall of the lower leg 36 should be constructed in close proximity.

Fixing means 40 for connecting and fixing the lower leg 36 and the upper leg 34 is assembled to the upper side of the lower leg 36, the assembling hole 42 formed so that the upper leg 34 can enter ), An insertion hole H1 communicating with an inner wall of the assembly hole 42, a fixing hole H2 intersecting and communicating with an upper side or a lower side of the insertion hole H1, and the fixing hole H2. Assembled and rotatable fixed body 46 and the locking body 44 is inserted into the position hole (34a) while the linear movement in the horizontal direction through the insertion hole (H1) by the rotation of the fixing body 46 You lose.

A locking jaw 42a is formed on the inner wall of the assembly hole 42. The locking step 42a is preferably made of about the thickness of the lower leg 36. This is to prevent the fixing means 40 from being lowered along the lower leg 36 by a load or an external force in an assembled state on the upper side of the lower leg 36.

On the other hand, the engaging body 44 which is inserted or removed in sequence along the through hole 36a and the positioning hole 34a while being moved back and forth along the insertion hole H1 has a threaded portion 44S at a portion thereof, It is comprised by the projection part 44R which inserts and inserts into the through-hole 36a and the position hole 34a. A step 44a is formed at the connection portion between the threaded portion 44S and the protrusion 44R. In addition, the insertion hole H1 to which the locking body 44 constructed as described above is assembled is molded to correspond to the shape of the locking body 44. In other words, a predetermined entry barrier ha is formed in the space where the protrusion 44R is positioned and the space where the threaded portion 44S is located. The entry prevention jaw (ha) is to prevent the threaded portion 44S from being separated from the fixed body 46 in the process of the engaging body 44 enters the inside. When the threaded portion 44S, which is engaged with the fixed body 46 and controls the linear movement of the locking body 44, is disengaged, the locking body 44 does not protrude rearward even if the fixing body 46 is rotated. This is to prevent. That is, it is a structure for preventing the threaded portion 44S from being deeply entered through the insertion hole H1 by the entry barrier ha. This configuration prevents the locking body 44 from being separated into the upper leg 34 and the lower leg 36 by the impact generated during the fall of the desk or chair 30. It can be seen that. The locking body 44 is moved back and forth by the rotation of the fixing body 46 assembled to engage with the threaded portion 44S, so that the protrusion 44R can be inserted into the through hole 36a and the positioning hole 34a. Will be done.

The above-mentioned fixing body 46 includes a body 46c composed of a guide hole 46d having one side opened and a tooth formed in the longitudinal direction; One side of the body 46c is configured to include a handle 46a is configured, and the guide bar 47 is inserted into the guide hole (46d) partially assembled. And, one side of the guide bar 47 is fixed by the outer wall of the fixing hole (H2), the other side is inserted into the guide hole (46d) formed in the inner side of the body (46c) is assembled by interference fit so as not to be separated have. It is preferable to configure a separation preventing means such as a spring washer (W) in the groove-shaped end portion (47a) so that the guide bar 47 is not separated from one side of the fixing hole (H2) to the other side.

In addition, at least one fixing rib 46b is provided at a connection portion of the body 46c and the handle 46a, and a fixing groove is formed at an outer portion of the fixing hole H2 so that the fixing rib 46b can be seated. It is of course possible to construct (hr).

Next, look at the overall coupling relationship and operation of the height adjusting device of the desk and chair 30 according to the present invention is configured as described above.

Height adjusting device according to the present invention, the fixing means 40 to assemble so that the through-hole (36a) and the insertion hole (H1) of the lower leg (36) communicate. At this time, it is natural that the lower leg 36 and the fixing means 40 should be assembled in the state in which the locking body 44 is moved to the rear by rotating the fixing body 46 clockwise. This describes the operation of the locking body 44 according to the rotational direction of the fixed body 46, for example, based on the drawings shown in order to help the understanding of the present invention. Therefore, it is obvious that the rotation direction of the fixing body 46 depends on the position of the fixing hole H2 and the insertion hole H1 and the position of the handle 46a. In order to prevent the fixing means 40 from being assembled to the lower leg 36 and rotating, the lower inner wall 42b and the lower leg of the fixing means 40 are referred to the locking jaw 42a. Of course, the outer wall of (36) should be in close contact. Thus, when the fixing means 40 is assembled to the upper side of the lower leg 36, the upper leg 34, which is provided with a plurality of position holes 34a, through the assembly hole 42, the inside of the lower leg 36 It becomes possible to insert into.

In the process of inserting the upper leg 34 into the lower leg 36, the through hole 36a and the desired position hole 34a should be coincident with the user. This is to fix the upper leg 34 and the lower leg 36 in the state adjusted to the desired height by the fixing means (40). To this end, the desired position hole among the plurality of position holes 34a of the upper leg 34 is positioned in communication with the through hole 36a, and then the locking body 46 is rotated in the counterclockwise direction. ) Advances. For this reason, the projection 44R of the locking body 44 is inserted through the through hole 36a and the position hole 34a.

As described above, in order to prevent the locking body 44 inserted into the through hole 36a and the positioning hole 34a from being separated by an external influence, the fixed body controlling the linear movement of the locking body 44. It is obvious that the rotation of the 46 should be prevented. To this end, by pressing the handle 46a of the fixing body 46 to seat the fixing rib 46b in the fixing groove hr, the fixing body 46 is no longer rotated.

On the other hand, the operation of the fixture 46 is made as follows.

First, in order to rotate the fixing body 46, the fixing rib 46b seated in the fixing groove hr is pulled out by using the handle 46a to escape from the fixing groove hr. At this time, a portion of the body 46c of the fixing body 46 is exposed to the outside of the fixing hole H2 by the handle 46a. Thus, the guide bar 47, one side of which is fixed to the other side of the fixing hole in which the handle 46a is configured by the spring washer W, is out of the guide hole 46d as much as the handle 46a is pulled out. The guide bar 47 and the body 46c are kept in a tensioned state. Holding the handle 46c protruding to one side of the fixing groove (hr) and rotating in the direction desired by the user, the threaded portion 44S engaged with the teeth of the body 46c is partially at the outer periphery of the body 46c. The locking body 44 is moved back and forth while rotating along the teeth formed.

When the locking body 55 is out of the position hole 34a, the upper leg 34 can be freely moved up and down. When the user adjusts the desk or chair to a desired height, the handle 46a is rotated to advance the catching body 44 so that the protrusion 44R passes through the positioning hole 34a. 46b is positioned to be seated in the fixing groove hr.

When the fixing rib 46b is seated in the fixing groove hr, the rotational movement of the fixing body 46 becomes impossible and the protrusion 44R is inserted into the positioning hole 34a. At this time, the guide bar 47 is located deep into the guide hole 46d of the body 46c.

In addition, the plurality of position holes 34a may be configured in the longitudinal direction of the upper leg 34, and the width of the user's selection may be widened by equipping at equal intervals or gradually spaced intervals or irregular intervals. .

As shown in FIG. 5, according to an embodiment of the present invention, it is also possible to form guide ribs 36g and guide grooves 34g on the upper leg 34 and the lower leg 36. This is to allow the through hole 36a and the positioning hole 34a to be easily communicated while the upper leg 34 moves along the inner side of the lower leg 36.

According to another embodiment of the present invention, it is also possible to form the guide ribs and guide grooves on the inner wall (that is, the upper portion of the assembly hole) in which the fixing means 40 and the upper leg 34 contact.

Naturally, the guide rib 36g and the guide groove 34g as described above are molded in the longitudinal direction in which the upper leg 34 moves.

The present invention as described above will not be limited by the illustrated embodiment, and many other modifications are possible to those skilled in the art, as well as the present invention is the appended claims Should be interpreted.

According to the present invention configured as described above it can be expected the following effects.

First, the desk and chair height adjustment device according to the present invention has the advantage that the user can be easily adjusted to the desired height.

In addition, it is possible to expect the advantage that it is possible to keep the height of the adjusted state firmly by preventing the fixing means from being easily detached due to external impact (ie, knocking down) or heavy weight of the user.

In addition, by arranging a plurality of position holes on the upper leg at various intervals, it is also expected that the user's convenience will be greatly improved by widening the choice in height adjustment.

Claims (8)

The lower leg is formed in a tubular shape, the through-hole formed on one side of the upper; An upper leg which is inserted into the lower leg, supports an upper plate or a sheet portion, and has a plurality of position holes formed in the longitudinal direction; And, An assembly hole formed on the upper side of the lower leg and formed to allow the upper leg to enter, an insertion hole communicating with an inner wall of the assembly hole, and a fixing groove intersecting and communicating with an upper side or a lower side of the insertion hole and having a fixing groove on one side Desk and chair, characterized in that it comprises a fixing means composed of a hole, a fixed body rotatably assembled to the fixing hole, and a locking body for the linear movement in the transverse direction through the insertion hole by the rotation of the fixing body Height adjustment device. The height adjusting device for a desk and a chair according to claim 1, wherein the position holes are configured at equal intervals. The height adjusting device of claim 1, wherein the position holes are gradually spaced apart from each other. According to claim 1, The assembly hole is a height adjustment device for the desk and chair, characterized in that the locking jaw corresponding to the thickness of the lower leg is formed on the inner wall. The height adjusting device of claim 1, wherein the insertion hole and the fixing hole are formed to correspond to the shape of the locking body and the fixing body, respectively. According to claim 1 or 5, wherein the locking body is a threaded threaded portion, a projection portion inserted into the position hole of the upper leg in front of the threaded portion, and a stepped portion is formed in the connection portion of the threaded portion and the projections Height adjusting device for the desk and chair. According to claim 1 or 5, wherein the fixing body, the guide hole is opened on one side, the body is formed with teeth in the longitudinal direction along the outer periphery; A handle configured at one side of the body; A fixed rib configured at a connection portion of the body and the handle; A guide bar is assembled to the guide hole; The fixed body is a height adjustment device for a desk and chair, characterized in that configured to be movable along the guide bar, The height adjusting device of claim 7, wherein the guide bar is assembled by being inserted into the guide hole and fixed to one side of the fixing hole by a release preventing means at an end portion of the guide bar.