KR100802663B1 - Folding Height Adjuster - Google Patents

Abstract

A foldable height adjustment device is disclosed. This folding height adjusting device is for adjusting the height of products such as tables, ironing boards, chairs, work benches, mounting tables, and desks. A first bracket of which a first end of the first leg member is coupled to the shaft and installed on one side of the bottom surface of the product; A second bracket provided on the other side of the bottom surface of the product by having at least one wing having a plurality of locking grooves to selectively hold the locking member provided at the front end of the second leg member to adjust the height of the product; The first leg member and the second leg member are elastically configured to elastically support the first and second leg members so as not to be folded by the weight of the product when the locking member is removed from the locking groove when the height of the product is adjusted. It characterized in that it comprises a; support portion is coupled to each end by a hinge. This foldable height adjustment device is stable and easy to adjust the height by the closing type operating hole and the support member for elastically supporting the first and second leg members, and when not using the product can be folded leg members Storage is improved.

Description

Folding height adjustment device {APPARATUS FOR HEIGHT CONTROLLING OF FOLDING AND SPREADING TYPE}

1 is an exploded perspective view showing a folding height adjustment device according to the present invention.

Figure 2 is a perspective view of the coupled state of the folding height adjustment device shown in FIG.

Figure 3a, 3b, 3c, 3d is an operating state diagram showing a state in which the height of the product is adjusted by the folding height adjustment device shown in FIG.

Figure 4 is a bottom view showing a state in which the leg member of the folding height adjustment device shown in FIG.

5 is a partially enlarged view showing another embodiment of the folding holding means according to the present invention.

Figure 6a, 6b is a view showing a state provided with a moving means in the leg member of the foldable height adjustment device.

7 is a partially enlarged view showing a state in which a curved guide surface is formed in the corner connection region of the folded portion and the connection passage according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: product 20: first leg member

30: second leg member 32: locking member

40: first bracket 42: insertion portion

50: second bracket 52: wings

54A: Operator 54B: Hanging Groove

54C: Safety catching part 54D: Connecting passage

54E: Folded portion 60: Support member

70: ball stopper

The present invention relates to a folding height adjustment device, in particular, it is possible to easily adjust the height of various products such as tables, ironing boards, chairs, work tables, mounting tables and desks, as well as shock absorbers on each leg member to be crossed It is related to the folding height adjustment device that can ensure the stability during folding and unfolding.

In general, various products such as tables, ironing boards, chairs, work benches, mounting tables and desks have means for adjusting their height.

For example, there is provided a structure in which a female screw is formed at the lower end of the leg of the product, and a support member is coupled to the bottom of the male screw after the male screw is fastened to the female screw. The height adjusting device of this structure is that the male screw is fastened to the female screw in accordance with the rotation of the support member in the tightening direction or loosening direction, so that the height of the legs is adjusted.

On the other hand, the height adjustment device configured to adjust the height of the upper plate disposed on the upper side as the pair of legs to cross and unfold the legs provided. However, the height adjusting device of such a structure could be easily detached from the upper end of the leg because the mounting groove of the bracket fixed to the bottom of the top plate was opened directly downward, whereby the height adjustment state of the product is the user's will Irrespective of whether there was a problem that is released, this also caused a problem that the user is injured. In addition, the height adjustment device of such a structure was to turn the product upside down to adjust the height of the product, insert the tip of the leg into the locking groove and then has to work to reverse the product back to its original state.

The present invention has been made to solve the problems of the prior art as described above, the technical problem of the present invention can safely adjust the height of the product, can be easily and quickly adjusted, providing a height adjustment device having a folding structure There is.

Another technical problem of the present invention is to provide a height adjustment device that is easy to move while having a folding structure.

In order to solve the above technical problem, the present invention,

To adjust the height of products such as tables, ironing boards, chairs, work benches, mounting tables and desks,

A first bracket of which a first end of a first leg member is coupled to an axis of the first and second leg members of the first and second leg members, the middle parts of which are joined to each other by a hinge so as to cross each other;

A second bracket provided on the other side of the bottom surface of the product by having at least one wing having a plurality of locking grooves to selectively hold the locking member provided at the front end of the second leg member to adjust the height of the product;

When the height of the product is adjusted to the elasticity to support the first and second leg members not to be folded and give elasticity to the first and second leg members when the locking member is removed from the locking groove when the height of the product Provides a foldable height adjusting device comprising a; support member coupled to the first leg member and the second leg member by a hinge.

The second bracket is provided with an operation hole for selectively engaging the locking groove while the locking member moves in the longitudinal direction of the second bracket,

The operator,

It is formed long in the longitudinal direction in the wing has a rectangular shape, the engaging groove is formed continuously in the inner upper portion, it characterized in that it has a closed structure so that the locking member is not separated.

The operator,

Safety catch portion formed in the end portion of the folding direction so that the first and second leg members are not completely folded immediately when folded; And

The first and second leg members are completely folded and connected to the safety catching area by a connecting passage so as to be in close contact with the bottom surface of the product, and a folded portion extending in the folding direction from the connecting passage. do.

A curved guide surface is formed on the outer side of the connecting corner of the connecting passage and the folded portion so that the catching member moves to the operating hole side through the connecting passage without interference when the first and second leg members are unfolded.

It is characterized in that the folding holding means for maintaining the folded state of the first and second leg members.

The folding holding means is installed on one surface of the first leg member or the second leg member facing the operating hole and is elastically inserted into the operating hole when the first and second leg members are completely folded. It characterized in that the ball stopper for maintaining the folded state.

The folding holding means is each fitting hole formed in the wing of the second bracket and the first leg member or the second leg member facing the wing;

Insertion pins inserted into each of the fitting holes to maintain a folded state of the first and second leg members; And

It characterized in that consisting of; connecting the fitting pin and the wing to prevent the loss of the fitting pin.

The support member is characterized by consisting of a shock absorber or a spring.

The lower end of the first and second leg members in contact with the ground is characterized in that the closing member for preventing slipping is installed.

The lower end of the first and second leg members is characterized in that the wheel is provided as a moving means.

Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the ordinary or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, which can be replaced at the time of the present application It should be understood that there may be various equivalents and variations.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention as follows.

As shown in FIGS. 1 and 2, the foldable height adjusting device includes a first bracket 40, a first bracket 40, and a predetermined bracket installed on a bottom surface of the product 10, that is, a bottom surface of the top surface of the product 10. The second bracket 50 is installed on the bottom surface of the product 10 by maintaining a distance, the first leg member 20 rotatably coupled to the first bracket 40 by a hinge, and the first leg member 20 And the second leg member 30 and the first and second leg members 20 and 30, which are coupled to the middle part of the center and the hinge (shaft), and whose upper end part is selectively caught by the locking groove 54B of the second bracket 50. It is provided between the support member 60 for elastically supporting the first and second leg members (20, 30).

Looking at this in more detail as follows.

The product 10 is not limited to tables, ironing boards, chairs, work benches, mounting tables and desks.

The first bracket 40 has a middle portion fixed to one side of the bottom surface of the product 10 by a plurality of screws, and the wings 41 on both sides are bent at a right angle so that the tip portion of the first leg member 20 rotates axially. Possibly combined.

The first bracket 40 is formed with a pair of auxiliary wings 44 for insertion when the second leg member 30 is folded. Therefore, the front end of the first leg member 20 is located inside each auxiliary wing 44 and the second leg member 30 is located between the auxiliary wing 44 and the wings 41 on both sides. The insertion part 42 is intended to maintain a stable and flow-free state when the first and second leg members 20 and 30 are folded, and to stably fix the first leg member 20. At this time, the structure of the first bracket 40 is not limited to this embodiment and may be modified into various structures.

The first and second leg members 20 and 30 may be folded such that their middle portions are rotatably coupled by a hinge (shaft) and overlap each other. Lower ends of the first and second leg members 20 and 30 are formed to extend to both sides, respectively, and both ends of each support part can prevent slippage, and a closing member 80 having a finishing function is installed.

The upper end of the second leg member 30 is provided with a locking member 32. The locking member 32 is fixed to both ends of the upper end of the pair of second leg member 30, the locking member 32 is selectively in the locking groove 54B of the working hole 54A to be described later. It is configured to be caught.

Such first and second leg members 20 and 30 are made of metal and have a square or round pipe structure, but preferably have a square pipe structure.

The second bracket 50 is configured to selectively engage the engaging member 32 provided on the upper end of the second leg member 30, the middle portion is fixed to the bottom of the product 10, the wings 52 on both sides ) Is bent at right angles to each other, and the blade 52 is formed with a rectangular working hole 54A having a locking groove 52. The operating hole 54A is formed to have a long length direction of the second bracket 50, that is, a length direction of the blade 52, and has a closed structure. As a result, the closing member 32 is prevented from being separated from the second bracket 50 by the closed structure.

And, the specific structure of the operating hole 54A is as follows. A locking groove 52 is formed successively in the upper portion of the operating hole 54A. The locking groove 52 has a structure that is downwardly opened so that the locking member 32 moving in the longitudinal direction in the operating hole 54A is selectively inserted and locked. On the other hand, at the end of the operating hole 54A in the folding direction (in the direction of the arrow indicated by a dashed line in FIG. 1), a safety catching portion 54C is formed to catch the locking member 32 that is pulled out of the locking groove 52. The safety catching portion 54C serves to prevent the first and second leg members 20 and 30 from being completely folded by the locking member 32. That is, when the first and second leg members 20 and 30 are folded so that the height of the product 10 is not high, the first and second leg members 20 and 30 are not immediately folded and are kept at a constant distance from the ground. It is to prevent the safety accident caused by folding the first and second leg members 20, 30 immediately.

In other directions, the length of the operating hole 54A is not long enough for the locking member 32 to be moved so that the first and second leg members 20 and 30 can be completely folded. That is, in order for the first and second leg members 20 and 30 to be fully folded, the working hole 54A should have a sufficient length. However, the working hole 54A according to the present invention is secured by the safety catching part 54C. Length limit is to prevent the movement of the locking member (32).

A connection passage 54D is formed in an upper portion of the inlet region of the safety catching portion 54C. Then, the folded portion 54E extends in the folding direction with respect to the connection passage 54D. Folded portion 54E is parallel to actuation hole 54A as shown in FIG. 1 or FIG. 2. However, the starting position is the connecting passage 54D located in the area of the safety catching portion 54C, and is formed to extend in the folding direction from the connecting passage 54D. Therefore, when the locking member 32 moves to the folded portion 54E through the connection passage 54D, the first and second leg members 20 and 30 can be completely folded.

The supporting member 60 is provided at both ends of the first and second leg members 20 and 30 so that the first and second leg members 20 and 30 are formed when the locking member 32 is removed from the locking groove 54B. It is to prevent the straight folding by the weight of (10), and may be composed of a spring, elastic rubber, shock absorber, gas cylinder, etc., but preferably made of a shock absorber (Shock Absorber). In general, the shock absorber should be used having a supporting force capable of sufficiently withstanding the weight of the top plate of the product (10). If the shock absorber has a weak support force (buffer force), the weight of the product 10 may not be sufficiently supported, and the first and second leg members 20 and 30 may be folded while the catching member 32 is pulled out of the catching groove 54B. It may cause a safety accident, if the bearing force is too strong, a problem that takes a lot of force to fold the first and second leg members (20,30) occurs.

On the other hand, this embodiment is provided with a folding holding means (90). The folding holding means 90 is composed of a ball stopper 70 is installed on one surface of the first leg member 20 in a position facing the operating hole 54A formed in the blade 52 of the second bracket 50. . The ball stopper 70 is composed of a steel ball, a spring and a support housing and the like are installed inside the first leg member 20 and the steel ball is exposed to the outside. The ball stopper 70 has a structure in which the spring stops due to the elasticity of the spring, and when the first and second leg members 20 and 30 are folded, the steel ball of the ball stopper 70 is operated by the blade 52. 54A) to be elastically inserted so that the folded state of the first and second leg members 20 and 30 is maintained. At this time, the steel ball of the ball stopper 70 may be formed in a separate hole in the wing 52 to be inserted into a separate hole rather than the operating hole (54A).

As shown in FIG. 5, the folding retaining means 90 according to another embodiment may include the wings 52 of the second bracket 50 and the first leg member 20 or the second facing the wings 52. The fitting holes 94 and 96 formed in the leg members 30 and the fitting holes 94 and 96 are inserted into the fitting holes 94 and 96 to maintain the folded state of the first and second leg members 20 and 30. Pin 92, the fitting pin 92 and the blade 52 is made of a connecting string 98 to prevent the loss of the fitting pin 92 by connecting. The folding retaining means 90 is the fitting hole 94 and the first leg member 20 or the first leg member formed in the blade 52 when the first and second leg members 20 and 30 are folded. It is inserted into the fitting hole 96 formed in the two leg member 30 to prevent the first and second leg members 20 and 30 from being unfolded arbitrarily.

Referring to the operation of the height adjustment device configured as described above is as follows.

The height adjusting device maintains a state in which the first and second leg members 20 and 30 are in close contact with the bottom surface of the upper surface of the product 10, as shown in FIG. 3 or 4A.

At this time, the first and second leg members 20 and 30 maintain their folded state as shown in FIG. 4A by the ball stopper 70 which is the folding holding means 90. That is, since a part of the steel ball of the ball stopper 70 is elastically inserted into the operating hole 54A, the first and second leg members 20 and 30 are not applied without external force applied to the steel ball. It will remain folded. And the locking member 32 is in the state located in the folded part 54E.

And, the support member 60 is reduced in length and provided with elasticity and compressed.

Subsequently, in order to expand the first and second leg members 20 and 30 and adjust the height of the product 10, the lower ends of the first and second leg members 20 and 30 are in contact with the ground. Move the top plate to the top. In this process, the steel ball of the ball stopper 70 is pulled out of the operating hole 54A, and thus the first and second leg members 20 and 30 can be unfolded.

In this operation, the first and second leg members 20 and 30 are unfolded by the elastic force of the support member 60, and thus the locking member 32 is moved from the folded portion 54E to the connection passage 54D.

Subsequently, the user moves the locking member 32 from the connection passage 54D to the safety locking portion 54C side as shown in FIG. 4B. In this process, the top plate of the product 10 maintains a predetermined height on the ground.

After supporting the first leg member 20 or the second leg member 30 and moving the upper plate of the product 10 upwards, the locking member 32 is shown in FIG. 4C along the working hole 54A. The solid member moves in the direction of the solid arrow (unfolding direction), and in such a state, when stopping the operation of lifting the product 10 upward, the locking member 32 is inserted into the adjacent locking groove 54B, and thus the first and second The leg members 20 and 30 maintain the unfolded state and the height of the product 10 is increased. On the other hand, since the support member 60, which was compressed when the upper plate of the product 10 is lifted, generates elasticity, the operation of lifting the upper plate to the top is smooth, and it can be lifted with a small force.

When the upper plate of the product 10 is lifted further, the locking member 32 is moved in the unfolding direction while being pulled out of the locking groove 54B which has been inserted.

In this process, the height of the upper plate of the product 10 can be increased.

Then, to lower the height, the locking member 32 is pulled out of the locking groove 54B. At this time, even if the locking member 32 is pulled out of the locking groove 54B, the support member 60 is installed between the first and second leg members 20 and 30 to resilient the first and second leg members 20 and 30. Since it is supporting, the 1st and 1st leg members 20 and 30 will not be folded by the weight of the upper board.

Subsequently, the height of the product 10 is lowered by inserting the locking member 32 into the locking groove 54B at a desired position.

On the other hand, in order to fold the finished product 10, the locking member 32 is moved in the folding direction (one dashed line arrow direction shown in FIG. 4D), and then the folding part 54E is moved through the connecting passage 54D. . The first and second leg members 20 and 30 are folded as shown in FIG. 4A while the locking member 32 moves to the end with the folded portion 54E, and the ball stopper 70 is operated by the hole 54A. ) To be folded.

Foldable height adjustment device according to another embodiment is provided with a moving means 100 in the lower end of the first and second leg members 20, 30 as shown in Figure 6a, 6b. This means for moving 100 is to facilitate the movement of the product (10). For this purpose, a wheel having straightness as shown in FIG. 5A may be used, and a caster-type wheel free of steering (rotation) as shown in FIG. 6B may be used. In particular, the caster-type wheel is provided with a locking device to prevent the rolling of the wheel to be able to be stably fixed the position of the product (10). Caster-type wheels used in this embodiment and its locking device are generally used, so detailed description thereof will be omitted.

On the other hand, according to another embodiment, the curved guide surface 54F is formed on the outer side of the connection corner of the connecting passage 54D and the folded portion 54E, as shown in FIG. This curved guide surface 54F is for causing the catching member 32 to move to the operating hole 54A side through the connecting passage 54D without interference when the first and second leg members 20 and 30 are unfolded. In other words, when the upper plate is moved upward to unfold the first and second leg members 20 and 30, the locking member 32 moves from the folded portion 54E to the connecting passage 54D and then the curved guide groove ( 54F) can be moved to the operating hole 54A through the connection passage 54D without interference, so that an operation for raising the height of the product 10 can be quickly and easily performed.

Since the folding height adjusting device according to the present invention has a closed structure in which a working hole having a locking groove is formed, the locking member is not separated from the working hole, thereby preventing a safety accident caused by the departure of the locking member. Since the support member is installed between the two leg members to support the elasticity, even if the locking member is pulled out of the locking groove, the product can prevent the first and second leg members from being folded due to its own weight, thereby preventing safety accidents. Since the ball stopper, which is a folding holding means, is elastically inserted into the operation hole in the folded state of the first and second leg members, the first and second leg members can be stably maintained in the folded state. In addition, since the locking member is located in the operating hole of the closed structure, there is no detachment phenomenon, and the height of the product is adjusted only by lifting the top plate of the product or removing the locking member from the locking groove so that the height adjustment of the product is easy. It can be done. On the other hand, since the first and second leg members are folded, the storage performance of the product is improved.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the present invention is provided by the person skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

Claims (12)

delete delete To adjust the height of products such as tables, ironing boards, chairs, work benches, mounting tables and desks, A first bracket of which a first end of a first leg member is coupled to an axis of the first and second leg members of the first and second leg members, the middle parts of which are joined to each other by a hinge so as to cross each other; A second bracket provided on the other side of the bottom surface of the product by having at least one wing having a plurality of locking grooves to selectively hold the locking member provided at the front end of the second leg member to adjust the height of the product; The first leg member and the second leg member are elastically configured to elastically support the first and second leg members so as not to be folded by the weight of the product when the locking member is removed from the locking groove when the height of the product is adjusted. To each end is coupled to the support member by a hinge; including, The second bracket is provided with an operation hole for selectively engaging the locking groove while the locking member moves in the longitudinal direction of the second bracket, The operator, It is formed in the longitudinal direction in the wing has a rectangular shape, the engaging groove is formed continuously in the inner upper portion, is formed in a closed structure so that the locking member is not separated, Safety catch portion formed in the end portion of the folding direction so that the first and second leg members are not completely folded immediately when folded; And And a folding part connected to the safety catching area by a connection passage so that the first and second leg members are completely folded to be in close contact with the bottom surface of the product, and are formed to extend in the folding direction in the connection passage. Folding height adjustment device. The method of claim 3, wherein when the first and second leg members are unfolded, the curved guide surface is formed on the outer side of the connecting corner of the connecting passage and the folded portion so that the locking member is moved to the operating hole side through the connecting passage without interference. Folding height adjustment device. The folding type height adjusting device according to claim 3 or 4, further comprising folding holding means for maintaining a folded state of the first and second leg members. The method according to claim 5, The folding means is installed on one side of the first leg member or the second leg member facing the operating hole is elastically inserted into the operating hole when the first and second leg members are completely folded Foldable height adjusting device, characterized in that consisting of the ball stopper for maintaining the first and second leg members folded state. The method according to claim 5, The folding means for each fitting hole formed in the wing of the second bracket and the first leg member or the second leg member facing the wing; Insertion pins inserted into each of the fitting holes to maintain a folded state of the first and second leg members; And Foldable height adjustment device characterized in that consisting of; connecting the pin and the wing connecting strap for preventing the loss of the fitting pin. delete The foldable height adjusting device according to claim 6, wherein the support member comprises a shock absorber or a spring. delete The foldable height adjusting device according to claim 9, wherein wheels are provided at lower ends of the first and second leg members. delete

Images