KR20230094374A - Casters for furniture with stopper function - Google Patents

Abstract

The present invention relates to a furniture wheel having a stopper function,
A support part supported on the rotation shaft of the two rotation bodies to facilitate rotation of the wheel;
An elevating rod integral with a coupling groove formed to protrude upward from the support portion;
An insertion hole formed in the leg of the furniture so that the coupling groove of the elevating rod is inserted and moved up and down in a state in which it is stably coupled by the ball plunger;
A fixing piece that is formed long in the longitudinal direction at the lower end of the elevating bar and coupled to the end to prevent movement while in contact with the bottom surface between the two rotating bodies;
The elevating bar is moved upward by the elastic force of the spring in the operating space of the support unit during movement by configuring the lifting bar with the operating space of the support unit in which the locking jaw of the elevating bar rises by the elastic force of the spring or is lowered by the weight of the user or other loads. While moving, the non-slip part of the fixing piece does not come into contact with the bottom surface to make it easy to move, and when the spring is compressed by the user's weight or other loads, the non-slip part of the fixing piece contacts the bottom surface and the rotating body rotates arbitrarily It is designed to prevent this from happening and to maintain a stable state.

Description

Wheels for furniture with stopper function {omitted}

The present invention relates to a furniture wheel having a stopper function, and more particularly, by forming an elevating rod having an integral coupling groove protruding from the upper part of a support part supported on a rotating shaft of two rotating bodies to facilitate rotation of the wheel, thereby forming a furniture wheel. It goes up and down while being stably coupled to the insertion hole formed in the leg, and a fixing piece is formed long in the longitudinal direction at the lower end of the elevating bar, and a non-slip part is coupled to the end to make contact with the floor between the two rotating bodies. By preventing the movement while the load is not applied, the elevating bar moves upward by the elastic force of the spring applied to the locking jaw in the operating space of the support unit, and the non-slip portion of the fixing piece does not come into contact with the bottom surface and moves When the spring is compressed while the locking jaw moves downward due to the user's weight or other loads, the non-slip part of the fixing piece contacts the bottom surface to prevent the rotating body from rotating arbitrarily to maintain a stable state. It relates to a wheel for furniture having a stopper function.

In general, it is already well known that a wheel is a device that reduces friction and facilitates the movement of an object by rolling a round object attached to an axle.

Therefore, large wheels were used to transport heavy loads, but these days, relatively light chairs are also used with wheels attached to make it convenient to move frequently.

The conventional wheel is a wheel equipped with a normal wheel for simple convenience when dragging, pulling and moving, and a stopper for fixing at the moved position so that the wheel does not rotate and is fixed by pressing with hands or feet. .

In modern life, various chairs are used for rest, study, or work. Among these chairs, chairs with wheels at the bottom of the legs are available so that users can easily move to a desired position or change direction while sitting on a chair. It is being used.

In the case of chairs with wheels for general use without stoppers, this structure causes frequent movement due to poor posture, and when used as a substitute for an impromptu ladder, such as replacing fluorescent lamps, there is a risk of falling in an unstable state due to wheel movement. problem that may occur, in the case of a wheel with a stopper for fixation, the inconvenience of having to operate with hands or feet to fix and release the position, and unstable fixation in which the wheel rotates and moves due to the rotating wheel even when fixed, causing operator problems. There are problems that pose a risk to you.

In the case of using conventional wheels attached to a chair, there is an advantage in that a stopper for fixing the position is not attached to the wheel, so that you can easily move and live. There was an inconvenience that required human help.

Therefore, by attaching a stopper to the wheel of the chair, the stopper is operated if necessary to prevent the movement of the wheel, and after working in a fixed state, the stopper must be released again to use the chair freely. There was a lot of this.

1 is a view showing a conventional chair with wheels,

A backrest (1) for supporting the user's back and a seat (2) for supporting the user's pelvis are formed in a right angle shape,

At the lower end of the seat 2, a leg part 3 having a predetermined length is mounted and supported on the ground,

A rotatable rotary wheel 4 is attached to the lower end of the leg part 3.

In addition, armrests 5 are provided on both the left and right sides as needed.

A chair having such a configuration has the advantage that it can be freely moved to a desired position by the user by the rotation wheel 4 of the leg part 3 and can easily change direction, but the chair moves unnecessarily even with a small movement when seated. It is difficult to maintain a stable sitting state, and there is a problem in that noise caused by wheels is generated during movement, interfering with the user's concentration.

On June 15, 2021, Patent Registration No. 10-2267115 (caster device for furniture) was proposed,

As shown in Figure 2, this

A caster block 13 inserted into the frame 12 while having a slide space 10 and a guide groove 11 on an inner wall;

It is inserted into the guide groove 11 of the caster block 13 and has a guide protrusion 14 on the side guided along the guide groove 11, and at the same time has an inclined surface 15a and a flat surface 16a on the bottom surface, and a slide space portion ( 10) an upper caster slider 17 installed inside and capable of ascending and descending movement;

The upper caster slider 17 has an inclined surface 15b and a flat surface 16b that can come into contact with the inclined surface 15a and the flat surface 16a of the upper caster slider 17 while perpendicularly penetrating the central portion of the upper caster slider 17 to rotate. A lower caster slider 19 having a central axis 18 and installed inside the slide space 10 to be able to move up and down and rotate;

a caster 20 coupled to a lower end of the lower caster slider 19 and capable of rising, descending, and rotational movement together with the lower caster slider 19;

a spring 21 installed inside the upper caster slider 17 and always elastically supporting the upper caster slider 17 downward;

As a means for finishing the caster block 13 while being installed at the end of the frame 12 into which the caster block 13 is inserted, the inner surface has a frame groove 22 into which the frame end is inserted, and when the caster rises caster caps 23 that adhere to the floor and fix the movement of furniture;

a groove 26 for inserting a tool into which a tool for turning the lower caster slider 19 is inserted, which is formed on the central shaft 18 of the lower caster slider 19;

Including,

A central axis of rotation 18 is formed vertically at the center of the lower caster slider 19, and the central axis of rotation 18 vertically penetrates the center of the upper caster slider 17, and the upper caster slider 17 and the lower caster slider 19 form a coaxial structure via the central axis of rotation 18 and can be stacked vertically, so that the lower caster slider 19 has a center of rotation fitted into the upper caster slider 17 It is configured to perform accurate rotational movement around the axis 18.

However, since the guide frame and spring are integrally assembled to the product and the wheel by the conventional wheel that is safe and automatically fixed and movable by the conventional load and no load, it must be produced integrally with the wheel when producing the product. There was a problem in that the wheels could not be separately attached to the furniture, and the wheels could not be arbitrarily replaced.

In addition, due to the configuration for fixing the wheel, all the load is applied to the axis of the wheel, so there is a risk of damage when a large load is applied, and there is a disadvantage that it cannot be used for a long time.

Therefore, the present invention is to solve the conventional problems as described above, by forming an elevating rod having an integral coupling groove protruding from the upper part of the support part supported on the rotation shaft of the two rotating bodies to facilitate the rotation of the wheel, so that the furniture It goes up and down while being stably coupled to the insertion hole formed in the leg, and a fixing piece is formed long in the longitudinal direction at the lower end of the elevating bar, and a non-slip part is coupled to the end to make contact with the floor between the two rotating bodies. By preventing the movement while the load is not applied, the elevating bar moves upward by the elastic force of the spring applied to the locking jaw in the operating space of the support unit, and the non-slip portion of the fixing piece does not come into contact with the bottom surface and moves When the spring is compressed while the locking jaw moves downward due to the user's weight or other loads, the non-slip part of the fixing piece contacts the bottom surface to prevent the rotating body from rotating arbitrarily to maintain a stable state. Its object is to provide a wheel for furniture having a stopper function.

In order to achieve the above object, a furniture wheel having a stopper function according to the present invention includes a support part supported by rotation shafts of two rotating bodies to facilitate rotation of the wheel, and a coupling groove formed to protrude upward from the support part. an insertion hole formed in the leg of the furniture so that the elevating bar and the connecting groove of the elevating bar are inserted and moved up and down in a state in which they are stably coupled by a ball plunger;

A fixing piece that is formed long in the longitudinal direction at the lower end of the elevating bar and coupled to the end to prevent movement while in contact with the bottom surface between the two rotating bodies;

The elevating bar is moved upward by the elastic force of the spring in the operating space of the support unit during movement by configuring the lifting bar with the operating space of the support unit in which the locking jaw of the elevating bar rises by the elastic force of the spring or is lowered by the weight of the user or other loads. While moving, the non-slip part of the fixing piece does not come into contact with the bottom surface to make it easy to move, and when the spring is compressed by the user's weight or other loads, the non-slip part of the fixing piece contacts the bottom surface and the rotating body rotates arbitrarily It is designed to prevent this from happening and to maintain a stable state.

In the above furniture wheel having a stopper function according to the present invention, an elevating rod having an integral coupling groove protrudes from the upper part of the support part supported by the rotating shaft of the two rotating bodies to facilitate the rotation of the wheel, thereby forming a leg of furniture. It rises and falls in a stably coupled state by the ball plunger of the insertion hole formed in

At the lower end of the elevating rod, a fixing piece is formed long in the longitudinal direction, and an anti-slip part is coupled to the end so that the movement is prevented while contacting the bottom surface between the two rotating bodies, so that the elevating rod is in the operating space of the support during movement. While moving upward by the elastic force of the spring applied to the locking jaw from within, the non-slip part of the fixing piece does not come into contact with the floor, making it easy to move, and the spring is When compressed, there is an effect of maintaining a stable state by preventing the rotating body from rotating arbitrarily while contacting the bottom surface of the non-slip portion of the fixing piece.

1 is a schematic diagram showing the configuration of a conventional chair with wheels.
Fig. 2 is a schematic diagram showing the configuration of a caster having a conventional braking device;
Figure 3 is a schematic diagram showing the overall configuration of the present invention.
Figure 4 is a schematic cross-sectional view showing the operating state of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Furniture wheels having a stopper function according to the present invention,

A support part 100 supported by the rotation shaft 103 of the two rotation bodies 101 and 102 to facilitate rotation of the wheel;

An elevating rod 110 in which a coupling groove 111 formed to protrude upward from the support portion 100 is integral therewith;

An insertion hole 210 formed in the leg 200 of the furniture so that the coupling groove 111 of the elevating bar 110 is inserted and moved up and down in a state stably coupled by the ball plunger 211;

A fixing piece that is formed long in the longitudinal direction at the lower end of the elevating bar 110 and is coupled with an anti-slip part 113 to the end so that movement is prevented while contacting the bottom surface between the two rotating bodies 101 and 102. (112) and

The lifting jaw 114 of the elevating bar 110 is configured as an operating space 104 of the support 100 that rises by the elastic force of the spring 115 or descends by the user's weight or other loads, so that during movement, the While the locking jaw 114 of the elevating rod 110 moves upward by the elastic force of the spring 115 within the operating space 104 of the support 100, the non-slip portion 113 of the fixing piece 112 moves to the bottom. It does not come into contact with the surface to facilitate movement, and when the spring 115 is compressed while the locking jaw 114 moves downward due to the user's weight or other load, the non-slip portion 113 of the fixing piece 112 It is configured to maintain a stable state by preventing the rotating bodies 101 and 102 from randomly rotating while in contact with the bottom surface.

The furniture wheel having a stopper function of the present invention configured as described above,

The rotation of the wheel is facilitated by the support part 100 supported on the rotation shaft 103 of the two rotating bodies 101 and 102, while the elevating rod has the coupling groove 111 integrated into the upper part of the support part 100. (110) is formed to protrude.

The elevating rod 110 is inserted in a state where the coupling groove 111 of the elevating rod 110 is inserted into the insertion hole 210 formed in the leg 200 of the furniture and stably coupled by the ball plunger 211. It goes up and down in the space of the hall 210.

An anti-slip part 113 is coupled to the end of the fixing piece 112 formed long in the longitudinal direction at the lower end of the elevating bar 110 so that it moves when it comes into contact with the floor between the two rotating bodies 101 and 102. to prevent this.

On the other hand, the lifting jaw 114 of the elevating bar 110 rises by the elastic force of the spring 115 within the operating space 104 of the support 100 or the elevating bar 110 by the user's weight or other loads. ) so that the locking jaw 114 moves downward.

Therefore, in a state where the user does not put his or her weight or other load is applied, the lifting step 114 of the elevating bar 110 responds to the elastic force by the spring 115 within the operating space 104 of the support part 100. While moving upward by the elevating rod 110, the elevating rod 110 is inserted into the insertion hole 210 formed in the leg 200 of the furniture and is stably coupled by the ball plunger 211. (110) is lifted in the space of the insertion hole (210).

Therefore, the non-slip portion 113 of the fixing piece 112 does not come into contact with the bottom surface, so that the rotating bodies 101 and 102 rotate smoothly and move easily.

Meanwhile, when the legs 200 of the furniture move downward due to the user's weight or other loads, the elevating bar 110 moves downward within the insertion hole 210 due to the load passing through the legs 200.

At this time, the locking jaw 114 of the elevating rod 110 moves downward while compressing the spring 115 .

The fixing piece 112 integral to the lower part of the elevating rod 110 also moves downward, and the anti-slip part of the fixing piece 112 in a state where the spring 115 is compressed by the locking jaw 114. 113 prevents the rotating bodies 101 and 102 from rotating arbitrarily while contacting the bottom surface, so that a stable state can be maintained.

If other loads continue to act on the furniture, the elastic force of the spring 115 acts to lift the locking jaw 114 of the elevating bar 110 as the person lifts the furniture lightly, so that the elevating bar 110 also moves up. While moving upward, the furniture can be easily moved with the rotational force of the rotating bodies 101 and 102 even with little force.

In the above, preferred embodiments of the present invention have been shown and described, but the present invention is not limited to the above embodiments, and conventional methods in the field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Various modifications can be implemented by anyone with the knowledge, and such modifications are within the scope of the described claims.

100: support 101, 102: rotating body
104: operating space 110: lifting bar
111: coupling groove 112: fixing piece
113: anti-slip part 114: locking jaw
115: spring 210: insertion hole
211: Ball plunger

Claims (1)

A support part 100 supported by the rotation shaft 103 of the two rotation bodies 101 and 102 to facilitate rotation of the wheel;
An elevating rod 110 in which a coupling groove 111 formed to protrude upward from the support portion 100 is integral therewith;
An insertion hole 210 formed in the leg 200 of the furniture so that the coupling groove 111 of the elevating bar 110 is inserted and moved up and down in a state stably coupled by the ball plunger 211;
A fixing piece that is formed long in the longitudinal direction at the lower end of the elevating bar 110 and is coupled with an anti-slip part 113 to the end so that movement is prevented while contacting the bottom surface between the two rotating bodies 101 and 102. (112) and
The support part 100 in which the locking jaw 114 of the elevating bar 110 is raised by the elastic force of the spring 115 or the hooking jaw 114 of the elevating bar 110 is lowered by the user's weight or other load A wheel for furniture having a stopper function, characterized in that composed of an operating space (104) of.

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