KR100313005B1 - a foot rest for chair and its drive device - Google Patents

Abstract

The legs are laid out on a footrest that is foldable to be stored under a chair or desk.

The present invention is formed with an arc-shaped plate having a predetermined curvature in the direction of the folding to be folded in multiple steps to be accommodated under the chair, and the first gear and the first gear formed to face opposite sides of the bottom of the footrest plate A footrest plate moving part which is engaged with a gear and is formed on both sides of the top surface of the footrest plate to fold the footrest plate, and prevents the footrest plate from slipping and being folded; It is provided with a support that is formed on the footrest plate of the top end of the footrest plate to cushion the impact generated when the wheel of the footrest itself to support the footboard.

Therefore, the footrest that is folded in multiple stages under the chair or desk is stored so that the legs are stretched and placed on the footrest so that the fatigue of the foot can be significantly reduced due to the smooth blood circulation. The footrest is mounted to be automatically stored under a chair or desk, thereby providing convenience to the user, thereby increasing the competitiveness of the product.

Description

Chair footrest and its drive device {a foot rest for chair and its drive device}

The present invention relates to a footrest for a chair and a driving device thereof, and more particularly, a foot for a chair so that a leg can be placed in a state where the legs are stretched out on a footrest that is foldable to be stored under a chair or a desk. A hanger and its driving device.

When sitting for a long time in a general vehicle, office chair, or living room chair, and keeps the posture of bending the knee continually smooth blood circulation does not occur, you will feel fatigue quickly.

In other words, because the foot is bent down in a state of inactivity and sitting in a chair for a long time, the blood circulated from the heart is not delivered smoothly to the foot. Because of this, if you sit in a chair for a long time to move the legs from time to time to loosen the muscles of the legs, or to prepare a separate foot rest with a predetermined height so that the legs can be stretched out under the uncomfortable point.

Therefore, an object of the present invention, the foot rest table is folded in a multi-step under the chair or desk to be placed on the foot stand with the legs stretched out to reduce the fatigue of the foot due to smooth blood circulation significantly To provide.

It is another object of the present invention to provide a footrest drive device for a chair to provide a user convenience by automatically receiving a footrest mounted under a chair or desk.

1 is an exploded perspective view of a footrest for a chair according to an embodiment of the present invention;

2 is a front view showing a separated state of the footrest for the chair according to an embodiment of the present invention,

Figure 3 is a side view of the folding state of the chair footrest according to an embodiment of the present invention,

Figure 4 is a side view of the deployed state of the footrest for the chair according to an embodiment of the present invention,

5 is an exploded perspective view of a footrest for a chair according to another embodiment of the present invention;

Figure 6 is a schematic mounting state of the footrest drive device for a chair according to an embodiment of the present invention,

Figure 7 is a state of use of the footrest drive device for a chair according to an embodiment of the present invention,

8 is a schematic mounting state of the footrest drive device for a chair according to another embodiment of the present invention,

9 is a state of use of the footrest drive device for a chair according to another embodiment of the present invention,

10 is a schematic view of the folded state when applying the footrest according to the invention desk;

Figure 11 is a side view of the deployed state when applying the footrest according to the invention desk;

12 is a view showing another embodiment of the stopper for limiting the movement of the footrest according to the present invention,

13 is a view showing another embodiment of the stopper for limiting the movement of the footrest according to the present invention.

* Explanation of symbols used in the main part of the drawing

One; chair

2,3,4,5; Footrest

2b, 3b, 4b; First gear

3d, 4d, 5d; 2nd gear

2f, 3f, 4f, 3g, 4g, 5g; stopper

3e, 4e, 5e; incline

6,7; wheel

9; Elastic member

10,11; Support

12; Bracket

13; Rotating member

16; Sliding moving groove

17; Bracket

18; Seating part

20; Crank member

21; handle

23; cylinder

The object of the present invention described above is a footrest plate which is formed of an arc-shaped plate having a predetermined curvature in the direction of being folded and folded in multiple stages so as to be accommodated under a chair, and a first gear which is formed opposite to both bottom surfaces of the footrest plate; A footrest plate moving part which is engaged with the first gear and is formed on both sides of an upper surface of the footrest plate to fold the footrest plate, and prevents the footrest plate from sliding and being folded, and the footrest plate Chair for the chair characterized in that it is provided with a support that is formed on the footrest plate of the top end of the footrest plate to cushion the shock generated when the wheel of the footrest itself to support the footrest plate at the time of deployment By providing a rack.

According to a preferred embodiment, the foot is formed to be inclined in front of the foot plate, when the user's leg is deployed by deploying the foot plate to remove the gap between the foot plate and the leg to relax the muscles of the foot and leg blood circulation It has an inclined surface to facilitate it.

According to a preferred embodiment, there is provided a stopper formed on both sides of the footrest plate to limit the moving distance of the footrest plate to be deployed, and to prevent separation and separation when the footrest plate is deployed.

According to a preferred embodiment, the stopper is formed at a position that is 1/6 of the entire length of the footrest plate to support the weight of the footrest plate and the user's legs.

According to a preferred embodiment, the footrest plate is formed in the center of the rear cutout is provided with a cutting groove for minimizing interference due to the chair pillar when mounting the footrest plate on the bottom of the chair.

According to a preferred embodiment, the front end of the footrest plate is formed on the front of the bracket and the continuously extending to the footrest plate, and formed on the bracket to be rotatable and when folded after using the footrest plate protrudes to the footrest plate upper surface And a rotating member that continuously folds the footrest plate when pressing the footrest plate at the uppermost end to an initial position.

According to a preferred embodiment, the front of the top of the foot plate to be mounted on the bottom of the chair is fixed and supported by maintaining a predetermined distance to be movable relative to the chair, the rear of the top of the foot plate is bracket integrally mounted to the bottom of the chair A sliding groove is formed in the upper end of the footrest plate, and a concave seating portion is formed, and a handle mounted on the crank member that is rotatably fixed to the seating portion is selectively seated in the sliding movement groove so that the inclination angle of the footrest plate It is formed to adjust the degree.

The object of the present invention described above is a footrest plate which is formed of an arc-shaped plate having a predetermined curvature in the direction of being folded and folded in multiple stages to be accommodated under a chair, and a first tooth portion which is formed opposite to both bottom surfaces of the footrest plate. And a footrest plate moving part formed of second tooth parts formed on both sides of the top surface of the footrest plate to be engaged with the first tooth portion to fold the footrest plate, and formed at the rear of the chair so that the footrest plate is separated from the rear side. One end of itself is rotatably fixed to the bracket to prevent it from being prevented, and the other end is rotatably fixed to the footrest plate of the uppermost end of the footrest plate, and automatically folding the footrest plate step by step due to the supply of operating pressure when operating a switch. By providing a footrest drive device for the chair, characterized in that it comprises a telescope-type cylinder It is.

The object of the present invention described above is a footrest plate which is formed of an arc-shaped plate having a predetermined curvature in the direction of being folded and folded in multiple stages to be accommodated under a chair, and a first tooth portion which is formed opposite to both bottom surfaces of the footrest plate. And a footrest plate moving part formed of second tooth parts formed on both sides of the top surface of the footrest plate to be engaged with the first tooth portion to fold the footrest plate, and formed at the rear of the chair so that the footrest plate is separated from the rear side. One end thereof is rotatably connected to the drive motor mounted on the bracket for preventing the rod from being connected to the rack gear engaged with the pinion formed on the axis of the drive motor, and the other end is rotatably fixed to the foot plate of the uppermost stage. When the drive motor is driven by a switch operation, the footrest plate is automatically folded step by step due to the drive of the pinion and the lex gear. The key is achieved by providing a footrest drive for a chair, characterized in that it comprises a link member.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to be described in detail so that those skilled in the art can easily practice the present invention in order to facilitate understanding of the present disclosure. Therefore, the technical scope of the present invention is not limited.

As shown in Figs. 1 and 7, an arc-shaped plate having a predetermined curvature in the traveling direction in which the footrest plates 2, 3, 4, 5, which are folded in a multi-stage receivable under the chair 1, is folded. (2a, 3a, 4a) is formed in a shape, and the opposite side is formed on both sides of the bottom surface of the footrest plate (2,3,4) to prevent the footrest plate (2,3,4) is slipped and folded First gears 2b, 3b, and 4b are formed in the first gears, and mesh with the first gears 2b, 3b, and 4b described above to fold the footrest plates 3, 4, and 5 to fold the footrest plates 3, 4. The second gears 3d, 4d, and 5d are formed on the extension pieces 3c, 4c, and 5c, which are formed opposite to the upper surfaces of the upper and lower surfaces, and the footrest plates 3, 4, and 5d are formed on the bottom surface. The supporters 10 and 11, which are in contact with each other and support the footrest plates 3, 4, and 5, are placed at the front end of the footrest plates 2, 3, 4, and 5, which are located in front of the footrest plate. Mounted on the footrest plate (5), but absorbs the shock generated when the wheels (6,7) of the support (10,11) contact the floor The elastic members 9 are mounted to the supporters 10 and 11, respectively, to cushion the buffers.

At this time, in the case of placing the user's legs by deploying the above-described footrest plates 3, 4 and 5, the gap between the footrest plates 3, 4 and 5 and the legs is removed to relax the muscles of the feet and legs. Inclined surface (3e, 4e, 5e) to promote the blood circulation as it is formed is inclined on the front of the footrest plate (3, 4, 5).

Both sides of the footrest plates (2,3,4,5) to limit the moving distance of the above-described footrest plates (3,4,5) and to prevent separation and separation when the footrest plates (3,4,5) are deployed Stoppers 2f, 3f, and 4f (3g, 4g, 5g) are formed in front and rear. At this time, the above-mentioned stoppers 2f, 3f, 4f (3g, 4g, 5g) is the entire length of the footrest plate (2, 3, 4, 5) to support the footrest plate (3, 4, 5) and the user's leg weight It is preferable to attach at the position 1/6 of (L).

On the other hand, as shown in Figure 12, the footrest for the chair according to the present invention limits the moving distance of the above-described footrest plate (2,3,4,5), footrest plate (2,3,4,5) ), The footrest plates 2, 3, 4, and 5 can be stably folded by increasing the contact area of the stopper to be detached and detached during deployment.

That is, sliding grooves 32 are formed on the left and right sides of the above-described footrest plates 2, 3, and 4, and are coupled to the slide grooves 32 to slide when the footrest plates 2, 3, 4, and 5 are folded. The stopper 33 is formed to correspond to the shape of the sliding groove 32 to be moved is mounted in the groove 34 formed on the left and right sides of the footrest plate (3, 4, 5).

On the other hand, as shown in Figure 13, the above-mentioned stopper is formed on both left and right sides of the footrest plates (2, 3, 4) ( Sliding groove 71 is formed in the shape, the upper side of the stopper 72, the lower side of which is coupled to the sliding groove 71 increases the contact area to stabilize the footrest plate (2, 3, 4, 5) It is formed into a shape having a polygon so that it can be folded.

Bracket 12 is integrally formed on the front side of the footrest plate 5 so that the footrest plate 3, 4, 5 can be continuously deployed by pulling the footrest plate 5 of the above-described stage. Rotating the footrest plate (3,4,5) continuously when protruding to the top of the footrest plate (5) when pressing the footrest plate (5) to the initial position. The member 13 is rotatably fixed to the bracket 12 by the fixing pin 14.

The front of the footrest plate 2 of the uppermost stage (located at the top when the footrest plate is folded under the chair) is projected to be mounted to the footrest plate 2 so as to be movably fixed to the chair 1. The piece 15 is fixed and supported by maintaining a predetermined distance h between the bottom of the chair 1 and the footrest plate 2, and the rear of the footrest plate 2 described above is inclined by the user by the inclination angle adjusting means. It is mounted to adjust the inclination angle of the footrest plate (3, 4, 5) according to physical conditions.

At this time, the above-described inclination angle adjusting means is integrally mounted to the bottom of the chair 1, the predetermined shape of the bracket 17, the sliding movement grooves 16 are formed, and the middle in the width direction of the footrest plate (2) of the top end On the crank member 20 and the crank member 20 which are formed to be concave on the side, the lower side of itself is rotatably fixed to the seating portion 18 by the fixing pin 19. It is mounted and selectively seated in the sliding movement groove 16 of the bracket 17 is provided with a handle 21 for adjusting the inclination angle of the footrest plates (3, 4, 5).

As shown in Figures 6 and 7, the footrest drive device for the chair is formed in the rear of the chair (1) described above, the bracket 22 to prevent the footrest plate (3, 4, 5) is separated from the rear And, one end of its own is rotatably fixed to the bracket 22 and the other end is rotatably fixed to the footrest plate (5) of the upper end footrest plate (3) as the expansion and contraction of the hydraulic or pneumatic supply due to the switch operation And a telescopic cylinder 23 for automatically folding folds 4 and 5 step by step.

In addition, the above-described chair footrest drive device for the chair is formed in the rear of the chair (1) described above, as shown in Figures 8 and 9 to prevent the footrest plate (3, 4, 5) is separated from the rear (24), a drive motor (26) mounted on the bracket (24) and the pinion (25) is coaxially mounted, and one end thereof is rotatable to the retractor (27) meshing with the pinion (25). The other end is pivotally fixed to the footrest plate 5 at the uppermost stage, and the footrest plates 3, 4, and 5 are automatically stepwise due to the operation of the pinion 25 and the leg gear 27 due to the switch operation. A link member 28 to be folded is provided.

Reference numeral 31 is formed in the rear of the above-described footrest plate (2,3,4,5) to minimize interference with the chair post when mounting the footrest plate (2,3,4,5) Cutting groove for, 51 is formed on the footrest plate (2, 3, 4, 5) is a cushion to put the user's feet and legs in a comfortable state.

On the other hand, the above-described footrest plate 2 can be mounted on the bottom of the chair 1 by inserting a fastening member into the through-holes formed at the left and right edges thereof (shown in FIG. 1), and the left and right sides of the footrest plate 2. By using a separate fixing member 61 is coupled to it will be able to be mounted on the bottom of the chair (1) (shown in Figure 5).

Referring to the method of using the footrest for the chair according to an embodiment of the present invention configured as described above are as follows.

As shown in FIG. 4, the footrest for chair can be manually deployed and used. That is, the chair (1) is gripped by the bracket (12) formed in front of the footrest plate (5) at the uppermost end of the footrest plates (2, 3, 4, 5) in a state of being folded in a multi-layer so as to be stored under the chair (1). In the case of pulling forward, the first gears 2b, 3b, 4b formed on the extension pieces 2a, 3a, 4a formed to face the bottom of the above-described footrest plates 2, 3, 4 and the footrests are engaged with the first gears 2b, 3b, 4b. Mutual driving of the second gears 3d, 4d and 5d formed on the plates 3, 4 and 5 and stoppers 3g, 4g and 5g formed on both sides of the footrest plates 2, 3, 4 and 5 (2f and 3f). 4f) allows the footrest plates 3, 4, and 5 to be continuously deployed within a predetermined movement stroke range.

At this time, the shocks and vibrations generated when the wheels 6 and 7 of the supporters 10 and 11 formed on the footrest plate 5 of the above-described contact with the bottom surface are inherently installed in the supporters 10 and 11, respectively. It is absorbed by the elastic force of the elastic member 9 is to be buffered.

Accordingly, the user can straighten the legs on the plate-shaped foot plates 3, 4, and 5 formed in an arc shape having a predetermined curvature in the folding direction. At this time, as the inclined surfaces 3e, 4e, and 5e of a predetermined angle are formed at the ends of the above-described footrest plates 3, 4, and 5, a gap between the user's legs and the footrest plates 3, 4, and 5 is formed. This allows the user to straighten the legs on the footrest plates (3, 4, 5).

Therefore, even when sitting in the chair 1 for a long time to relax the muscles of the legs and feet can promote blood circulation. At this time, the above-mentioned foot plate (3, 4, 5) is the foot plate (3, 4, 5) by the structure of the meshing of the first gear (2b, 3b, 4b) and the second gear (3d, 4d, 5d) described above 5) The footrest plates 3, 4, and 5 are prevented from sliding down against the user's intention while the legs are straightened by the deployment.

On the other hand, if it is necessary to fold to the initial position to be stored under the chair 1 after using the footrest as described above, the protruding piece of the rotating member 13 formed on the front of the footrest plate 5 of the above-described upper end ( 13a) is rotated counterclockwise on the drawing with the fixing pin 14 as the central axis to protrude from the upper surface of the footrest plate 5. At this time, when the user pushes the above-described footrest plate 5 toward the chair 1 using the foot gum, the footrest plates 4 and 3 are interrupted by the rotation member 13 and are continuously folded.

As shown in Figures 6 and 7, the above-described chair footrest can be automatically deployed and used.

When a switch (not shown) is operated by a user, one end of the cylinder (head side of the cylinder) is rotatably fixed to the bracket 22 mounted behind the chair 1 and the other end (cylinder). Of the above-mentioned foot plate as the pneumatic or hydraulic pressure is supplied to the telescope-type cylinder 23 which is rotatably fixed to the foot plate 5 at the uppermost end thereof to extend the cylinder 23. (5, 4, 3) is developed continuously.

At this time, the stopper plates 3, 4, 5g (2f, 3f, 4f) formed on both sides of the above-described footrest plates 2, 3, 4, 5 are within the predetermined movement stroke range. In the continuous deployment, it is possible to prevent the separation and separation during the deployment of the footrest plate (3, 4, 5).

On the other hand, as shown in Figures 8 and 9, when the power is turned on (ON) by driving the power switch (not shown) by the user, the coaxial with the drive motor 26 As the formed pinion 25 is driven, the lag gear 27 meshed with the pinion 25 is driven to move in the right direction on the drawing. The above-described footrest plates 5, 4, and 3 are continuously deployed by a link 28 whose one end is rotatably connected to the above-described rack gear 27 and the other end is pivotally connected to the footrest plate 5. Will be.

At this time, the stoppers 3g, 4g, 5g (2f, 3f, 4f) formed on both sides of the above-described footrest plates 2, 3, 4, 5 are separated and separated when the footrest plates 3, 4, 5 are unfolded. It can prevent that.

On the other hand, as shown in Figures 10 and 11, the chair footrest according to the present invention can be used mounted under the desk. That is, the guide 41 having the same width and spacing as the footrest plates 2, 3, 4, and 5 is horizontally mounted on the inner side of the back plate 40 of the desk, and the footrest plates 2, 3 at the end of the guide 41. , 4, 5, the support piece 42 is formed to extend in the upward direction to support the load, the guide groove 43 is formed in the guide 41 to the left and right in the same way, the top foot plate (2) The hinge shaft 44 which is coupled to the guide grooves 43 on both the right and left sides and slides along the guide grooves 43 is rotatably fixed.

As illustrated in FIG. 11, the bracket 12 formed on the front surface of the footrest plate 5 of the above-described stage is gripped and pulled in the right direction in the drawing, so that the footrest plates 2, 3, 4, 5 are separated. Due to the movement of the center of gravity, the hinge shafts 44 formed on both sides of the lowermost footrest plate 2 are slidably moved along the guide groove 43 in the left direction in the drawing, in which the footrest plate 2 is the end of the guide 41. It is in contact with the support piece 42 formed in the do not come down to the bottom anymore.

As the above-described bracket 12 is continuously pulled in the right direction in the drawing, the footrest plates 3, 4, and 5 are deployed in stages.

As described above, according to a preferred embodiment, the footrest is folded in a multi-step under the vehicle chair to be stored on the footrest in a state where the legs stretched out can significantly reduce the fatigue of the foot due to smooth blood circulation. This can reduce the fatigue of the occupants can contribute to the safe operation.

In addition, the footrest to be mounted under the chair or desk is automatically received to provide convenience to the user, thereby increasing the competitiveness of the product has the advantage.

Claims (9)

A footrest plate which is formed of an arc-shaped plate having a predetermined curvature in the traveling direction to be folded and folded in multiple stages to be accommodated under a chair; A first gear which is formed to face both bottom sides of the footrest plate and a second gear which is formed on both sides of the top surface of the footrest plate so as to be engaged with the first gear to fold the footrest plate, and the footrest plate slips Footrest plate moving unit for preventing being folded; And It is characterized in that it is provided with a support that is formed on the footrest plate of the top end of the footrest plate to cushion the shock generated when the wheel of the foothold itself to support the footrest plate when the footboard is deployed Chair footrest. According to claim 1, wherein the foot is formed inclined to the front of the foot plate, when the foot of the user to expand the foot plate to remove the gap between the foot plate and the leg to relax the muscles of the foot and leg blood circulation Chair footrest, characterized in that having a slope to promote the. The chair foot according to claim 1, further comprising a stopper formed at both front and rear sides of the footrest plate to limit the moving distance of the footrest plate and to prevent the footrest plate from being separated and separated when the footrest plate is deployed. Hanging stand. 4. The chair footrest according to claim 3, wherein the stopper is formed at a position 1/6 of the entire length of the footrest plate so as to support the weight of the footrest plate and the user's leg. The chair footrest according to claim 1, further comprising a cutout groove formed at the rear center of the footrest plate to minimize interference due to a chair pillar when the footrest plate is mounted on the bottom of the chair. 2. The apparatus of claim 1, further comprising: a bracket formed on the front side of the footrest plate and pulling the footrest plate to continuously deploy the footrest plate; And It is formed to be rotatable on the bracket, and when the folding after using the foot plate protrudes to the upper surface of the foot plate is characterized in that it comprises a rotating member for continuously folding the foot plate when pressing the foot plate at the top end to the initial position Chair footrest. According to claim 1, wherein the front of the footrest plate is mounted on the bottom of the chair is fixed and supported by maintaining a predetermined interval to be movable relative to the chair, The rear end of the footrest plate has a sliding groove formed on the bracket integrally mounted on the bottom of the chair, and a recessed portion is formed on the footrest plate of the top end, and is mounted on the crank member rotatably fixed to the seating part. The handle is a foot rest for the chair characterized in that it is selectively seated in the sliding groove formed to adjust the angle of inclination of the foot plate. A footrest plate which is formed of an arc-shaped plate having a predetermined curvature in the traveling direction to be folded and folded in multiple stages to be accommodated under a chair; Footrest plate movement consisting of a first tooth portion formed to face both sides of the bottom surface of the footrest plate and a second tooth portion formed on both sides of the top surface of the footrest plate to be engaged with the first tooth portion to fold the footrest plate part; And The rear end of the chair is fixed to the bracket to prevent the foot plate is separated from the rear side is rotatably fixed and the other end is rotatably fixed to the foot plate of the top end of the foot plate, the operating pressure when operating the switch Footrest drive device for a chair comprising a telescope-type cylinder for automatically folding the footrest plate step by step due to the supply of. A footrest plate which is formed of an arc-shaped plate having a predetermined curvature in the traveling direction to be folded and folded in multiple stages to be accommodated under a chair; Footrest plate movement consisting of a first tooth portion formed to face both sides of the bottom surface of the footrest plate and a second tooth portion formed on both sides of the top surface of the footrest plate to be engaged with the first tooth portion to fold the footrest plate part; A driving motor formed to the rear of the chair and mounted to a bracket to prevent the footboard from being separated from the rear; And One end thereof is rotatably connected to the rack gear that is engaged with the pinion formed on the shaft of the drive motor, and the other end thereof is rotatably fixed to the foot plate of the uppermost stage, and the pinion and the rack are driven when the drive motor is driven by a switch operation. Footresting device for a chair, characterized in that it comprises a link member for automatically folding the footrest plate by the drive of the gear.