KR101085522B1 - One touch height control leg device of furniture for learning - Google Patents

Abstract

PURPOSE: A one touch height controllable leg device for educational furniture is provided to control the height of a leg through a rotation operation. CONSTITUTION: A fixing member(20) is fixed to the lower end of educational furniture. One end of a leg member(40) is combined with the fixing member. When the leg member rotates downwardly, the support state of the educational furniture is maintained. When the leg member rotates upwardly, the support state of the educational furniture is released. A release maintaining unit prevents the downward movement of the leg member when the leg member moves upwardly. A support maintaining unit maintains the support state of the leg member.

Description

One Touch Height Control Leg Device of Furniture for Learning}

The present invention relates to a one-touch height adjustment leg device for educational furniture, and relates to a one-touch height adjustment leg device for educational furniture that can easily adjust the height of a desk, a training table, an experiment table, and the like, which are frequently used in schools and academies.

In general, schools and academies use various kinds of educational furniture, such as an experiment table used for experiments, a practice table used for practice, and a music table used for music classes, in addition to the desks used for general classes such as Korean language and mathematics.

The educational furniture is manufactured separately for the lower grades for the relatively small body size and the higher grades for the large body size, or manufactured in a batch height, the former has a problem that the manufacturing cost increases, the latter is a decrease in learning efficiency or posture Has problems such as bad.

Therefore, conventionally, educational furniture, such as a desk, an experiment table, a training table, which can adjust the height according to the body size, may be manufactured.

For example, the legs of the desk are manufactured by dividing the upper and lower parts into two parts, and the upper and lower legs are slidably coupled, and the upper and lower legs are fixed at a predetermined position with fixing screws. It is adopted a lot.

However, the conventional educational furniture as described above has a problem that the productivity and utility, such as the structure is complicated and the manufacturing cost is greatly increased due to the height adjustment function.

Therefore, the present applicant has been registered for the auxiliary leg device for patent registration No. 0964277 laboratory bar to solve the problems of the prior art.

However, the patent registration No. 0944277 auxiliary leg device for laboratory bench should screw the fastening screw and the fastening hole when the supporting member of the leg member is held and released, and it is easy to be lost or stolen because the fastening screw is easily separated. , When switching between the supporting mode and the supporting release mode, each time the fastening screw must be rotated using a tool such as a screwdriver, there is a very troublesome and inconvenient problem.

The present invention has been made in view of the above problems, it is possible to easily switch manually without a separate tool when switching between the support release mode from the support mode, and do not need to separate the parts arbitrarily to prevent the loss or theft of parts and to simply lower It is an object of the present invention to provide an adjustable one-touch height adjustment device for educational furniture.

One-touch height adjustment leg device of the educational furniture proposed by the present invention is formed in a plate shape and fixed to the lower end of the educational furniture, one end is rotatable up and down using a hinge shaft to the fixing member. When coupled and rotated downward, the support member is supported by supporting the educational furniture at a certain height and the support member releases the support state to release the support state of the educational furniture at the time of upward rotation, and in the release state, the leg member is moved upwardly It includes a release holding to prevent the downward movement.

The fixing member is formed in a plate shape and a fixed plate portion fixed to the lower end of the educational furniture and is formed to protrude at regular intervals on one side of the fixed plate portion and a pair of rotation each supported by both ends of the hinge shaft It consists of supports.

The leg member is formed by bending at a right angle at the end of the vertical portion and the vertical portion rotatably coupled and supported by the hinge axis between the end of the vertical portion between the rotational support of the fixing member and supporting the educational furniture It comprises a pedestal configured to form an additional "L" shape, and a support protrusion is installed below the horizontal end of the pedestal.

"형상을 이루도록 구성하는 것도 가능하다.The pedestal is formed by further forming an extension that bends perpendicularly toward the lower portion at the end of the horizontal portion.

"It is also possible to configure to form.

In the rotating support portion of the fixing member is formed a hinge hole to which the hinge axis is coupled and a pin hole penetrating the inner surface of the upper end of the hinge hole and one edge of the rotation support portion, the hinge hole is fixed up and down the hinge axis It is formed in an oval shape so as to be movable in a distance, and the pin hole may further be provided with a pressing pin which is assembled to reciprocate along the longitudinal direction and an elastic member that always applies a force toward the hinge shaft on the pressing pin.

The release holding portion is formed in the fixing member and a fastening hole formed by projecting a pair of locking jaws protruding at regular intervals along the inner circumference, and installed at a position opposite to the fastening hole of the leg member and rotatable to the leg member. At the same time, it is coupled and supported so as to be movable back and forth within a predetermined distance, and one end portion is rotated by a predetermined angle in the state of moving forward into the inside of the fastening hole. It includes a fastening shaft which is formed with a locking projection.

The release holding part may further include an elastic member that always applies a force in a direction in which the fastening shaft moves backward.

And the present invention may further comprise a support holding portion for maintaining the supporting state of the leg member.

The support holding portion is rotatable to the leg member and is supported and coupled to be movable back and forth within a predetermined distance range and has a male screw formed at one end thereof, and an elastic member that always applies force in a direction in which the screw is moved backward. And a female screw hole installed at the lower end of the educational furniture and positioned opposite to the fastening screw in a supporting state of the leg member, and having a female screw threaded to the male screw.

According to the one-touch height adjustment leg device of the educational furniture according to the present invention, the height can be adjusted by the operation of rotating about 180 degrees, it is convenient to use and can be used by adjusting the height according to various ages or physical conditions.

And according to the one-touch height adjustment leg device of the educational furniture according to the present invention, it is possible to use the support holding or releasing holding unit stably to maintain the support state or release support state is convenient and easy to use without any tools It is possible to maintain the supported state or the unsupported state.

In addition, according to the one-touch height adjustment leg device of the educational furniture according to the present invention, since the support holding portion or the release holding portion is integrally installed on the fixing member and the leg member and difficult to separate into separate parts, the loss or theft of the parts is prevented. Height can be adjusted easily.

Furthermore, according to the one-touch height adjustment leg device of the educational furniture according to the present invention, it is possible to increase the height adjustment range and to adjust the fine height, such as horizontal adjustment, because a separate support protrusion having a screw shaft together with the pedestal is installed.

1 is a perspective view showing a state of use of one-touch height adjustment leg device of the educational furniture according to the present invention.
Figure 2 is a front view showing a state of use of one-touch height adjustment leg device of the educational furniture according to the present invention.
Figure 3 is a perspective view showing one embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention.
Figure 4 is a side view of the operating state showing one embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention.
Figure 5 is an exploded perspective view showing a release holding portion in one embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention.
Figure 6 is a side cross-sectional view showing the release holding in one embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention.
Figure 7 is a rear view showing the operating state of the release holding unit in one embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention.
Figure 8 is an enlarged cross-sectional view showing the operating state of the release holding portion in one embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention.
Figure 9 is an exploded perspective view showing the holding portion in one embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention.
Figure 10 is a side cross-sectional view showing the holding portion in one embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention.
Figure 11 is an enlarged cross-sectional view showing the operation of the support holding portion in one embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention.
12 is a side view showing another embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention.
Figure 13 is a front sectional view showing the hinge hole of the fixing member in another embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention.
Figure 14 is a side view showing the hinge hole of the fixing member in another embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention.
Figure 15 is a side cross-sectional view showing a part for repositioning the hinge axis in another embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention.

Next, a preferred embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention will be described in detail with reference to the drawings.

First embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention, as shown in Figures 1 to 3, made of a plate shape and fixed member 20 is fixed to the lower end of the educational furniture 10 ), And one end portion is rotatably coupled up and down by using the hinge shaft 30 to the fixing member 20, and is supported to support the educational furniture 2 at a predetermined height when downwardly rotated. Leg member 40 which is in the release state of the support to release the support state of the educational furniture (2) during rotation, the release holding portion 60 for maintaining the release state of the leg member 40, and the leg member ( It comprises a support holding portion 80 to maintain the support state of 20).

As shown in FIG. 4, the fixing member 20 has a substantially rectangular plate shape and is fixed to the inner surface of the leg 12 or the like located at the lower end of the educational furniture 10. ) And a pair of rotation support parts 24 which are formed to protrude at regular intervals on one side of the fixing plate part 21 and are supported at both ends of the hinge shaft 30.

It is possible to form a plurality of fixing holes 22 in the fixing plate portion 21 to be fixed to the leg 12 using a fixing screw or the like.

The rotation support part 24 has a hinge hole 25 to which the hinge shaft 30 is coupled.

The leg member 40 includes a pedestal 41 and a support protrusion 50 connected to the lower portion of the pedestal 41.

"형상으로 형성하여 설치된다.The pedestal 41 is approximately "

"Formed in shape and installed.

For example, as shown in FIGS. 3 and 4, the pedestal 41 has one end portion using the hinge shaft 30 between the pair of rotational support portions 24 formed on the fixing member 20. To be rotatably coupled to support the vertical portion 42 is formed at the end of the vertical portion 42 and the hinge portion 43 is formed at the end of the vertical portion 41 is supported by the legs 12 of the educational furniture 10 It consists of a horizontal portion 44 to support and an extension portion 46 bent at right angles to the opposite side of the leg 12 of the educational furniture 10 at the end of the horizontal portion 44.

The support protrusion 50 is installed at the lower end of the extension part 46.

The support protrusion 50 is made of a rubber or synthetic resin and is provided with a height adjustment shaft 52 is formed on the outer peripheral surface of the male screw, the extension portion 46 of the pedestal 41 of the support protrusion 50 It is also possible to further form a female screw hole 47 in which the female screw is formed so that the height adjustment shaft 52 is screwed.

The release holding part 60 is configured to prevent the leg member 40 from moving downward in the lifted release state.

5 to 8, the release holding part 60 is formed in the fixing member 20 and a fastening hole 61 in which a locking jaw 62 is formed, and the support of the leg member 40. A support hole 64 formed through the leg member 40 so as to face the fastening hole 61 in a released state, a fastening shaft 70 provided in the support hole 64, and the fastening And a snap ring 76 assembled to the shaft 70 and an elastic member 78 installed in the support hole 64.

The fastening hole 61 penetrates the fixing plate 21 of the fixing member 20 and is formed as a circular hole, and the locking jaw 62 protrudes at regular intervals along an inner circumference thereof.

The support hole 64 is formed through the vertical portion 42 constituting the pedestal 41 of the leg member 40 and is formed in a circular hole, and one end of the elastic member 78 is supported on the inner surface. do.

The fastening shaft 70 is formed in a substantially cylindrical shape, and is assembled to the back and forth movement and rotational movement in the support hole 64, and rotates at a predetermined angle with one end moving forward in the fastening hole 61. As a result, a pair of locking projections 72 are formed at the rear of the locking step 62 to prevent backward movement.

The fastening shaft 70 has a body 71 formed in a substantially cylindrical shape, the pair of engaging projections 72 formed at regular intervals along a circumference of one end of the body 71, and the body 71. It is formed integrally extending to the other end of the) and supports the other end of the elastic member 78 and includes a rotary knob 74 is formed and installed to facilitate the rotation of the body 71 by the attraction force It is done by

The elastic member 78 is made using a compression coil spring or the like to always apply a force to the fastening shaft 70 in the backward moving direction.

The fastening shaft 70 is rotatable and the snap ring 78 is assembled to one end of the body 71 so as to be supported by the support hole 64 so as to be movable back and forth within a predetermined distance range.

The snap ring 76 is formed using an E-ring or the like, and is assembled with one end of the body 71 (opposite to the rotation knob 74) exposed from the support hole 64. .

At the end of the locking jaw 62 of the fastening hole 61, as the locking shaft 70 rotates by a predetermined angle, the stopping protrusion 63 prevents the rotation of the locking protrusion 72 and prevents the rotation of the locking protrusion 72. It is also possible to be further formed.

The support holding portion 80 is fixed to the leg member 40 to prevent the flow in the state in which the leg member 40 is supported by supporting the leg 12 of the educational furniture 10 is supported.

As shown in Figs. 9 to 11, the support holding portion 80 includes a support hole 81 formed in the leg member 40, a fastening screw 82 supported by the support hole 81, A snap hole 88 assembled to the fastening screw 82, an elastic member 90 supported by the support hole 81, and a fastening hole formed in the leg 12 of the educational furniture 10 ( 100).

The support hole 81 is formed through the vertical portion 42 constituting the pedestal 41 of the leg member 40, the fastening screw 82 is assembled to rotate and move back and forth and the elastic member ( One end of 90) is supported on the inner surface.

The fastening screw 82 is formed in a substantially cylindrical shape, one end of the body 83 is formed with the male screw, and formed integrally extending to the other end of the body 83 and the elastic member 90 Supporting the other end of the) and comprises a rotating handle 85 is formed and installed to facilitate the rotation of the body 83 by hand.

The elastic member 90 is made using a compression coil spring or the like to always apply a force to the fastening screw 82 in the backward moving direction.

The snap ring 88 is formed by using an E-ring (e-ring), a washer, a C ring, a nut, etc., and one end of the body 83 (opposite to the rotation knob 85) has the support hole 81. Assembled in an exposed state from.

The female threaded hole 100 is installed in the leg 12 of the educational furniture 10 and the like and is positioned to face the support hole 81 in the supporting state of the leg member 40 and is screwed with the male screw 84. The female screw 102 is formed on the inner circumferential surface.

The female threaded hole 100 may be formed by directly drilling the leg 12 of the educational furniture 10 and processing the female thread, or by installing a nut or the like having the female threaded hole 100 in an insert structure. It is possible.

And another embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention, as shown in Figure 12, one end of the pedestal 41 between the rotary support 21 of the fixing member 20 The vertical portion 42 rotatably coupled and supported by the hinge shaft 30 and formed at the end of the vertical portion 42 are bent at a right angle to the lower portion and the legs 12 of the educational furniture 10 are formed. It is also possible for the horizontal portion 44 to support and support the vertical portion 42 to form an "L" shape.

At the lower end of the horizontal portion 44, the support protrusion 50 is installed.

Also in the above-described other embodiments, the present invention can be implemented in the same configuration as the above-described embodiment except for the above-described configuration, and thus detailed description thereof will be omitted.

And another embodiment of the one-touch height adjustment leg device of the educational furniture according to the present invention, as shown in Figure 13 and 14, the hinge hole 25 formed in the rotary support 24 of the fixing member 20 The hinge shaft 30 may be formed in an elliptical shape so as to be movable up and down a predetermined distance.

When the elliptical hinge hole 25 is formed as described above, a predetermined distance is generated between the leg 12 of the educational furniture 10 and the horizontal portion 44 of the pedestal 41, thereby causing unstable or the leg member ( When the problem occurs that the 40 is difficult to rotate in the support state is caught by the leg 12 of the educational furniture 10 it is possible to solve the problem by moving the leg member 40 a predetermined distance upward or downward.

As shown in FIG. 15, a pin hole 26 penetrating the inner surface of the upper end of the hinge hole 25 and one edge of the rotation support part 24 is formed in the rotation support part 24 of the fixing member 20. Further, the pin hole 26 further includes a pressing pin 27 which is assembled to reciprocate along the longitudinal direction and an elastic member 28 which always applies a force toward the hinge shaft 30 on the pressing pin 27. It is also possible to install.

When the pin hole 26, the pressure pin 27, and the elastic member 28 is installed and configured as described above, the leg member 20 prevents the phenomenon of easily flowing up and down about the hinge shaft 30. It is possible.

Also in the above-described other embodiments, the present invention can be implemented in the same configuration as in the above-described embodiment or other embodiments, except for the above-described configuration, and thus detailed description thereof will be omitted.

Next, the operation of the one-touch height adjustment leg device of the educational furniture according to the present invention configured as described above will be described in detail with reference to the drawings.

First, in the case of the support release state (not in use) of the leg member 40, the support release state of the support member 50 using the release holding unit 60 in a state in which the support protrusion 50 of the leg member 40 is rotated upward. (See Figs. 4-6).

In order to maintain the release state, the user grasps the rotary knob 74 of the fastening shaft 70 and moves the fastening shaft 70 forward so that one end portion and the locking protrusion of the body 71 of the fastening shaft 70 are moved. 72 passes through the pair of locking jaws 62 of the fastening hole 61 so as to be assembled into the fastening hole 61 (FIGS. 7A and 8A, 8). b) see)

In the above state, when the rotation knob 74 is rotated, the locking protrusion 72 rotates at the rear of the locking jaw 62, and when the rotation knob 74 is continuously rotated, the locking protrusion 72 is rotated by the stop protrusion 63. As the rotation is no longer possible, the rotation of the fastening shaft 70 is stopped (see FIGS. 7B and 8C).

In the above state, the elastic member 78 is compressed and the elastic force acts in the direction in which the fastening shaft 70 moves backward. The locking projection 72 is in close contact with the locking jaw 62 while being fastened to the fastening shaft. Prevent backward movement of 70.

When the state as described above, the leg member 40 is fixed to the fixing member 20, so that the downward rotation of the leg member 40 is prevented and the release state is maintained.

In order to return the release holding part 60 to its original state, first hold the rotation knob 74 of the fastening shaft 70 and rotate it to the opposite side of the stop projection 63 (away from the stop projection 63).

As the fastening shaft 70 continues to rotate so that the locking projections 72 are positioned between the locking projections 62, the locking projections are released from the locking projections 62. The fastening shaft 70 moves backward.

As the fastening shaft 70 moves backward, one end portion of the fastening shaft 70 and the locking protrusion 72 are released from the fastening hole 61 and returned to their original state, and the fastening shaft is fastened by the snap ring 76 ( The reverse movement of the 70 is stopped, and the leg member 40 is rotatable downwardly.

On the other hand, in order to switch the leg member 40 to the support state in order to increase the height of the educational furniture 10 in the above state by rotating the leg member 40 downward 12 the legs of the educational furniture 10 The horizontal portion 42 of the base 41 of the leg member 40 is positioned at the lower end (see FIGS. 4 and 9, 10, and 11 (a)).

In the state as described above, while holding the rotary knob 85 of the fastening screw 82 of the support holding portion 80 to rotate in the forward moving direction.

When rotated as described above, while the male screw 84 of the fastening screw 82 is screwed into the female screw 102 of the female screw hole 100, the leg member 40 is the leg 12 of the educational furniture 10 The state of being held in close contact with the state is maintained. (See FIG. 11B).

In order to release the supporting holding state, the rotation knob 85 of the fastening screw 82 is rotated in the opposite direction to disassemble the male screw 84 of the body 83 from the female screw hole 100.

In the above description of the preferred embodiment of the one-touch height adjustment leg device for educational furniture according to the present invention, the present invention is not limited to this, but the claims and the detailed description of the invention, various modifications within the scope of the accompanying drawings It is possible to implement, and this is also within the scope of the present invention.

10: education desk 12: legs
20: fixing member 21: fixing plate
22: fixing hole 24: rotation support portion]
25: hinge hole 26: pin hole
27: pressure pin 28: elastic member
30: hinge axis 40: leg member
41: pedestal 42: vertical portion
43: hinge hole 44: the horizontal portion
46: extension 50: base protrusion
60: release holding portion 61: fastening hole
62: jamming jaw 63: stop projection
64: support hole 70: fastening shaft
71: body 72: locking projection
74: rotation handle 76: snap ring
78: elastic member 80: support holding part
81: support hole 82: tightening screw
83: body 84: male thread
85: rotation handle 86: snap ring
90: elastic member 100: female thread hole
102: female thread

Claims (9)

A fixing member made of a plate shape and fixedly installed at the lower end of the educational furniture,
One end portion is rotatably coupled up and down by using a hinge shaft to the fixing member and is a supporting state by supporting the educational furniture at a certain height when rotating downward, and release the supporting state by releasing the supporting state of the educational furniture upon upward rotation. Leg member to be,
A release holding part which prevents the leg member from being moved downward in the lifted release state.
And including a support holding portion for maintaining the supporting state of the leg member,
The fixing member is formed in a plate shape and is fixed to the lower end of the educational furniture and the fixed plate portion is formed to protrude at regular intervals on one side of the fixing plate portion and a pair of rotation of both ends of the hinge shaft are assembled, respectively Composed of supports,
The leg member is formed by bending at a right angle at the end of the vertical portion and the vertical portion rotatably coupled and supported by the hinge axis between the end of the vertical portion between the rotational support of the fixing member and supporting the educational furniture And a pedestal configured to form an additional "L" shape, and a support protrusion installed below the horizontal end of the pedestal.
The release holding portion is formed in the fixing member and a fastening hole formed by projecting a pair of locking jaws protruding at regular intervals along the inner circumference, and installed at a position opposite to the fastening hole of the leg member and rotatable to the leg member. At the same time, it is coupled and supported so as to be movable back and forth within a predetermined distance, and one end portion is rotated by a predetermined angle in the state of moving forward into the inside of the fastening hole. A fastening shaft having a locking protrusion formed therein, a support hole formed through the leg member, and the fastening shaft being assembled to rotate and move back and forth; one end is supported on an inner surface of the support hole and the fastening shaft moves backward. An elastic member that always applies a force in a direction of In from exposed comprises a retaining ring assembled to one end,
At the end of the locking jaw formed in the fastening hole of the release holding portion, as the locking shaft rotates by a predetermined angle, a stopper for blocking the rotation of the locking protrusion is further formed.
The fastening shaft is formed in a cylindrical shape and the body is assembled to the support hole, the pair of engaging projections are formed to protrude at regular intervals along the periphery of one end of the body, integrally with the other end of the body Is formed extending and includes a rotary handle that is supported on the other end of the elastic member,
The support holding portion is rotatable to the leg member and is supported and coupled to be movable back and forth within a predetermined distance range and a male screw is formed at one end thereof, and is formed through the leg member and the coupling screw is rotated and moved back and forth. A support hole movably assembled and one end thereof is supported on an inner surface of the support hole An elastic member that always applies a force in a direction in which the fastening screw moves backward, a snap ring assembled at one end with one end of the fastening screw exposed from the support hole, and a lower part of the educational furniture And a female screw hole which is opposite to the fastening screw in a supporting state of the leg member and is formed with a female screw which is screwed with the male screw.
The fastening screw is assembled to the support hole and formed in a cylindrical shape, the male screw formed at one end of the body, and integrally formed at the other end of the body, the other end of the elastic member One-touch height-adjusting leg device for educational furniture, including a rotary handle supported at one end. delete delete delete delete delete delete The method according to claim 1,
The pedestal of the leg member is further formed by forming an extension that is bent at a right angle downward from the end of the horizontal portion "

"Configure to shape,
One-touch height adjustment leg device of the educational furniture to install the support protrusions on the lower end of the extension portion. The method according to claim 1,
The rotating support of the fixing member further includes a hinge hole to which the hinge shaft is coupled, a pin hole penetrating an inner surface of the upper end of the hinge hole and one edge of the rotating support,
The hinge hole is formed in an oval shape so that the hinge axis is movable up and down a predetermined distance,
The pin hole is further provided with a pressure pin that is assembled to reciprocate along the longitudinal direction,
One-touch height adjustment leg device of the educational furniture to the pin hole further installs an elastic member that always applies a force toward the hinge shaft to the pressing pin.

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