WO2016125923A1

WO2016125923A1 - Apparatus for fixing electric chair

Info

Publication number: WO2016125923A1
Application number: PCT/KR2015/001082
Authority: WO
Inventors: 박은하
Original assignee: (주)코젤
Priority date: 2015-02-03
Filing date: 2015-02-03
Publication date: 2016-08-11

Abstract

The present invention relates to an apparatus for fixing an electric chair and, more specifically, to an apparatus for fixing an electric chair that can stably prevent the chair from arbitrarily moving and can also uniformly adjust the degree of fixing the chair according to the weight of a user, who uses the chair, only by an operation in which the user sits on the chair. To this end, in an electric chair that comprises: a body that includes an upper plate member for covering the upper portion and a lower plate member for covering the lower portion; a height adjustment part provided in the central portion of the body to vertically pass through the upper plate member and the lower plate member; and a wheel provided on the lateral portion of the body, the present invention comprises a support shaft that connects the upper plate member and the lower plate member and a sliding member installed on the lateral portion of the height adjustment part to move upward and downward along the support shaft.

Description

Electric chair fixture

The present invention relates to an electric chair fixing device, and more particularly, it is possible to stably prevent the chair from moving randomly only by the user sitting on the chair, and to constantly fix the degree of fixing according to the weight of the user. An electric chair fixing device which can be adjusted.

In general, the caster is mounted on the bottom of a movable device such as a swivel chair or a hospital bed to enable easy position change of the device. The caster is connected to the chair leg and the support shaft pin to change the caster's wheel movement direction by 360 degrees. It is common for this to be possible.

On the other hand, casters, especially casters of the swivel chair, even if the user is seated, the caster's wheels can be freely rotated so that the movement can be made freely in any direction 360 degrees, but even if the seated person does not want the floor surface by careless movement There is a possibility that unexpected movement may occur because it is often pushed away from the.

In order to prevent this, recently, as a part to prevent the caster of the chair from being pushed, a fixing device is separately installed on the caster side. The fixing device of the caster has a predetermined stopper installed inside the caster installed at the lower end of the chair. When the user wants to fix the chair, the stopper is manually operated. On the contrary, when the user wants to move the chair, the stopper is directly released by the user.

However, in the case of the conventional fixing device for the chair, the user has to manually operate or release the stopper manually whenever the chair is fixed or released, there is inconvenience in use, and the user operates or operates the fixing device. There is a problem in that there is a fear that the chair is forcibly manipulated because there are many cases of forgetting the release.

Thus, in order to solve this problem, the technique described in Korean Patent Laid-Open No. 10-2010-0116329, as shown in Figs. 1 and 2, has been developed, the technical feature of which is the rear of the handle 4 on which the arm is placed. Is rotatably connected to both sides of the seat, the whole of the handle (4) is linked through the connecting shaft (1) and the connecting portion (1) for moving up and down the support is formed in the center of the lower surface of the seat, The lower part of the (3) is formed with a cylinder (7) having an annular link (5) at the top, the inner side of the cylinder (7) is provided with a spring (8) and the fixing plate (9) at the bottom, When the handle 4 is rotated downward, the acting portion 3 and the annular link 5 are moved downward by the connecting shaft 1, and thus the cylinder 7 is moved so that the fixed plate 9 is moved. It is characterized in that the contact with the bottom surface to be fixed.

By the way, the technique described in Korean Patent Laid-Open No. 10-2010-0116329 has the advantage of preventing the chair from being randomly moved even when the user is sitting on the movable chair, but the user sits on the chair to prevent the chair from moving. Since the handle 4 to be rotated downward in the state, there is a significant hassle, there is a problem that the inconvenience of having to use the hand.

The present invention has been made to solve the above problems, the object of the present invention is provided in the center of the body and the cylindrical body with a height adjusting portion for adjusting the height of the chair seat and the wheel provided on the side of the body In the electric chair made of, the upper plate member and the lower plate member of the body is formed with a through hole in the central portion, the through hole side portion to form a plurality of support shafts connecting the upper plate member and the lower plate member at regular intervals, the height adjustment portion is The upper plate member and the lower plate member of the body penetrates up and down, and moves up and down along the support shaft, so that the height support portion is elastically supported by the coil spring, when the user sits on the seat, the height adjustment portion is lowered by the user's load Move to the floor so that the electric chair is randomly To provide a power seat retainer to prevent the copper.

Further, another object of the present invention is to install a cylindrical fixing member at the bottom of the height adjustment portion, install a sliding member that moves up and down along the support shaft in the flange formed on the upper portion of the fixing member, the male screw is formed at the lower end of the support shaft And a chain gear in which a female thread corresponding to the male screw is formed is provided under the support shaft, and a coil spring is provided between the flange of the sliding member and the spring support member provided at the upper portion of the chain gear, wherein each chain gear is a chain. By connecting the chain, by rotating the chain to adjust the height of the chain gear, you can adjust the elasticity of the coil spring according to the user's load, and the electric chair fixing device that can adjust it when the elasticity is reduced by long time use To provide.

The present invention for solving this problem;

In the electric chair consisting of a body consisting of a top plate member to cover the upper portion and a lower plate member to cover the lower portion and the height adjustment portion for penetrating the upper plate member and the lower plate member up and down and the wheels provided on the side of the body And, the support shaft for connecting the upper plate member and the lower plate member, and moved up and down along the support shaft, characterized in that consisting of a sliding member installed on the side of the height adjustment portion.

Here, the support shaft is provided with a coil spring for elastically supporting the sliding member from the bottom, the lower portion of the support shaft is characterized in that the spring supporting member for supporting the lower portion of the coil spring is provided.

In addition, a male screw is formed on a lower outer circumferential surface of the support shaft, and a chain gear formed with a female screw corresponding to the male screw is installed on the lower portion of the support shaft to support the spring support member from the bottom.

At this time, a plurality of the support shaft is installed, the chain gear is installed on each support shaft is characterized in that it is connected by the chain to adjust the elasticity of the spring by adjusting the height of each chain gear at a time through the chain.

On the other hand, a cylindrical fixing member is installed below the height adjusting part, a first flange is formed on the outer circumferential surface of the fixing member, and the sliding member is fixed to the flange.

In addition, the lower surface of the height adjustment portion is characterized in that the fixing portion is further formed.

According to the present invention of the above configuration, provided in the central body of the cylindrical body and the height adjustment unit for adjusting the height of the chair seat and the wheel provided in the side of the body, in the electric chair, the top plate of the body The member and the lower plate member have a through hole formed at the center thereof, and form a plurality of support shafts connecting the upper plate member and the lower plate member at a predetermined interval to the side of the through hole, and the height adjusting part penetrates the upper plate member and the lower plate member of the body up and down. However, it moves up and down along the support shaft, and the height supporting portion is elastically supported by the coil spring, when the user is seated on the seat, the height adjusting portion is moved to the bottom by the user's load, so as to contact the bottom surface There is an effect of preventing the electric chair to move arbitrarily only by sitting in the chair.

The present invention provides a cylindrical fixing member at a lower end of the height adjusting unit, a sliding member moving up and down along a support shaft on a flange formed at an upper portion of the fixing member, and a male screw formed at a lower end of the supporting shaft. A chain gear having a female thread corresponding to a male thread is formed at a lower portion of the support shaft, and a coil spring is provided between the flange of the sliding member and the spring support member provided at the upper portion of the chain gear, and each chain gear is connected by a chain. By adjusting the height of the chain gear by rotating the chain, the elasticity of the coil spring can be adjusted according to the user's load, and the elasticity of the coil spring can be adjusted when the elasticity is reduced by long time use.

1 is a conceptual diagram of a conventional chair fixing device.

Figure 2 is a state diagram of a state of rotating the handle of the conventional chair fixing device to the bottom.

3 is a perspective view of an electric chair having an electric chair fixing device according to the present invention.

4 is a plan view of the main body of the electric chair having the electric chair fixing device according to the present invention.

5 is a cross-sectional view taken along the line A-A of FIG.

FIG. 6 is a cross-sectional view taken along the line B-B in FIG. 4.

Figure 7 is a perspective view of the leaf spring of the electric chair is installed electric chair fixing device according to the present invention.

8 is a cross-sectional view of the electric chair equipped with the electric chair fixing device according to the present invention.

9 is a plan conceptual view of the electric chair is installed electric chair fixing device according to the invention.

FIG. 10 is an enlarged view of a portion C of FIG. 8.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. The same reference numerals are used for the same elements in the drawings, and duplicate descriptions of the same elements are omitted. And, it is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth.

Figure 3 is a perspective view of the electric chair is installed electric chair fixing device according to the present invention, Figure 4 is a body plan view of the electric chair is installed electric chair fixing device according to the invention, Figure 5 is a cross-sectional view taken along line AA of FIG. 6 is a cross-sectional view taken along line BB of FIG. 4, and FIG. 7 is a perspective view of a leaf spring of the electric chair provided with the electric chair fixing device according to the present invention, and FIG. 8 is an electric motor mounted with the electric chair fixing device according to the present invention. 9 is a cross-sectional view of the chair, and FIG. 9 is a plan conceptual view of the electric chair on which the electric chair fixing device is installed, and FIG. 10 is an enlarged view of part C of FIG. 8.

The present invention relates to an electric chair fixing device installed on the electric chair to fix the electric chair. First, the electric chair will be described. As shown in FIGS. 3 to 7, the configuration of the body 200 forms a lower part of the chair. And first and

second limit switches

250 and 260 provided on the inner side of the body 200 and the height adjusting unit 300 installed at the center of the body 200 to control the height adjusting unit 300. , 2 is composed of a rotary plate 400 for controlling the operation of the switch (250,260).

Here, the height adjustment unit 300 is fixed to the center of the body 200 using the fixing member 210, the upper end of the height adjustment unit 300 is protruded to the upper portion of the body 200, It is connected to the bottom of the seat of the chair.

At this time, the height adjustment unit 300 is provided on the inner side of the guide member 310 and the guide member 310 to form an outer side and the lower and lower members 320 and the guide member 310 to move up and down It is provided with an actuator (not shown) for controlling the vertical movement of the elevating member 320.

In addition, first and

second limit switches

250 and 260 are provided on the inner side of the body 200 so as to be spaced apart by a predetermined interval, and the first and

second limit switches

250 and 260 are electrically connected to the actuator of the height adjusting part 300. The actuator is operated by the first and

second limit switches

250 and 260 to control the vertical movement of the elevating member 320.

That is, when the first limit switch 250 is operated, the elevating member 320 is moved upward by the actuator, and when the second limit switch 260 is operated, the elevating member 320 is lowered. By moving, the height of the chair can be adjusted.

On the other hand, the rotating plate 400 provided on the upper portion of the body 200 is rotatably installed around the guide member 310 of the height adjusting unit 300, the operating lever 430 on the lower surface of the rotating plate 400 ) Is provided.

At this time, the operation lever 430 is located between the first limit switch 250 and the second limit switch 260 to move toward the first limit switch 250 or the second limit by the rotation of the rotating plate 400. Moving toward the switch 260, the first and

second limit switches

250 and 260 are activated respectively.

That is, the

sensing pins

252 and 262 are rotatably provided on the side portions of the first and

second limit switches

250 and 260, respectively, and the user moves the rotating plate 400 in one direction to move in the direction of the first limit switch 250. When the operating lever installed on the lower surface of the rotating plate 400 rotates the detection pin 252 of the first limit switch 250, the first limit switch 250 is operated, so that the actuator of the height adjusting part 300 The elevating member 320 is moved upwards, and when the user rotates the rotating plate 400 in the opposite direction, the operating lever 430 moves in the direction of the second limit switch 260, the operating lever 430 is Since the second limit switch 260 is operated by rotating the sensing pin 262 of the second limit switch 260, the lifting member 320 is moved downward by the actuator of the height adjusting part 300. .

On the other hand, the body 200 is formed so that the top is open, the upper plate member 230 for covering the open portion is provided.

Here, the upper plate member 230 is formed with an arc-shaped first guide groove 234 so that the operating lever 430 installed on the lower surface of the rotating plate 400 can be inserted into the body 200.

In addition, the upper plate member 230 is formed in a size larger than the size of the rotating plate 400, the ring-shaped foot seating portion 232 is formed at the edge of the user's feet, the foot of the user in a comfortable state It can be placed on the foot seat 232.

And, since the rotating plate 400 is located on the upper plate member 230, the user is required to adjust the height of the chair with the foot on the foot seating portion 232, the rotary plate 400 with the heel of the foot By pressing and rotating, the height of the chair can be easily adjusted.

On the other hand, one side lower surface of the rotating plate 400 is provided with a guide rod 440 for returning the rotating plate 400 to the original position, the upper plate member 230, the guide rod 440 is the inside of the body 200 An arc-shaped second guide groove 236 is formed to be inserted into the.

In addition, a return portion 270 formed of a pair of leaf springs 272 and a spring bracket 274 fixing the ends of the leaf springs 270 is installed inside the body 200. ) Is fixed to the lower portion of the upper plate member 230 using a bolt or the like, the guide rod 440 is located between the pair of leaf springs (272).

Thus, when the user rotates the rotating plate 400, the guide rod 440 is rotated to one side, according to which the leaf spring 272 of the rotating direction is bent by the guide rod 440 and rotated When the force is dissipated, it is moved to the original position by the elastic force of the leaf spring 272, and when rotating in the other direction is returned to the original position by the leaf spring 272 located on the other side.

At this time, the lower end of the guide rod 440 is provided with a return bearing 442, when the guide rod 440 is moved by the rotation of the rotating plate 400, the return bearing 442 in contact with the leaf spring 272 Since the rotation, the rotation plate 400 can be more stably rotated and returned by minimizing friction with the leaf spring 272.

On the other hand, the leaf spring 272 may use one plate having good elasticity, or may be used by stacking a plurality of plates.

In addition, the upper portion of the body 200, the outer side of the height adjustment unit 300 is provided with a ring-shaped support member 240, the lower end of the support member 240 is an upper plate located on the upper portion of the body 200 It is supported on the upper surface of the central portion of the member 230, the guide member 310 of the height adjusting portion 300 is inserted into a through hole (not shown) formed in the central portion of the support member 240.

Here, the rotary plate 400 is rotatably installed on the outer side of the support member 240, the installation groove 242 is formed on the outer side of the support member 240, the ring inside the rotary plate 400 The coupling member 410 of the shape is provided, the inner circumferential surface of the coupling member 410 is provided with a rotary bearing 420, the rotary bearing 420 is seated and fixed in the installation groove 242, thereby supporting the support member ( The rotating plate 400 is rotatably installed at 240.

Thus, the user puts the front portion of the foot on the foot seating member 232 of the upper plate member 230, and easily rotates the rotating plate 400 only by the rear portion of the foot, it is possible to control the elevating member 320.

And, the edge of the rotating plate 400 is further provided with a ring-shaped stepped member 450, the upper surface of the stepped member 450 is formed with a non-slip unevenness (not shown), the user only the back of the foot rotating plate When rotating the 400, it is possible to prevent the foot from slipping and to rotate the rotating plate 400 stably.

On the other hand, one side of the main body 200 is provided with a power supply unit 280 for receiving external power, the inside of the main body 200 is connected to the power supply unit 280, the charging unit for storing the power supplied from the outside ( 285).

In addition, the present invention is the electric chair fixing device installed in the above-described electric chair as shown in Figures 8 to 10 the configuration of the upper plate member 230 and the body 200 to cover the upper portion of the body 200 It consists of a support shaft 510 for connecting the lower plate member 290 to cover the lower portion and the sliding member 530 which is installed on the side of the height adjusting part 300 and moves up and down along the support shaft 510.

Here, the upper plate member 230 and the lower plate member 290 is formed in the through hole in the center, the height adjustment unit 300 can move up and down through the through hole, the height adjustment unit 300 is the bottom In contact with the surface, it is possible to prevent the electric chair from moving arbitrarily.

In addition, the support shaft 510 is installed on the side of the through-hole formed in the center of the upper plate member 230 and the lower plate member 290, the height adjustment portion 300 is located between the support shaft 510 It is to move up and down along the support shaft 510.

That is, a cylindrical fixing member 520 is installed below the height adjusting part 300. A first flange 522 is formed on an outer circumferential surface of the fixing member 520, and the first flange 522 is formed on the outer circumferential surface of the fixing member 520. The sliding member 530 is fixedly installed.

In this case, the sliding member 530 is formed in a cylindrical shape, the second flange 532 is formed on the upper end to form a vertical through hole in the first flange 522 to be inserted and fixed, the first flange 522 ) And the second flange 532 are firmly fixed by welding.

In addition, the sliding member 530 is supported by the support shaft 510 because the vertical length is more than a predetermined length to prevent the height adjustment unit 300 from shaking.

On the other hand, the support shaft 510 is provided with a coil spring 560, the coil spring 560 is elastically supporting the first flange 522 to which the sliding member 530 is coupled, the support shaft A lower portion of the 510 is provided with a spring support member 565 for supporting the lower portion of the coil spring 560.

Thus, when the user sits on the seat, the user is moved downward by the load of the user, the bottom surface of the height adjuster 300 is in contact with the bottom surface, the chair does not move arbitrarily, if the user rises from the seat, Since the coil spring 560 elastically supports the fixing member 520 and the sliding member 530 installed at the lower portion of the height adjusting part 300 from the lower side, even if a separate operation is not performed, by the elastic force of the coil spring 560. Height adjustment unit 300 is moved to the top.

In this case, an upper stepped portion 512 is formed on an outer circumferential surface of the support shaft 510, and the sliding member 530 is caught by the upper stepped portion 512, thereby preventing the upper portion from moving upward.

In addition, a male screw is formed on a lower outer circumferential surface of the support shaft 510, and a chain gear 540 having a female thread formed to correspond to the male screw is provided below the support shaft 510, wherein the chain gear 540 is provided. Located in contact with the bottom of the spring support member 565, the chain gear 540 can be rotated to adjust the vertical position of the chain gear 540, the coil spring provided on the top of the spring support member 565 The elastic force of 560 can be adjusted.

Thus, it is possible to appropriately adjust the elastic force of the coil spring 560 according to the weight of the user.

That is, while the elastic force of the coil spring 560 is strong, when the weight of the user is light, even if the user sits on the seat of the chair, the height adjustment unit 300 is greater than the load of the user the elastic force of the coil spring 560 Since it does not move to the lower side, by controlling the height of the chain gear 540 to adjust the elastic force appropriately.

In addition, since the elastic force of the coil spring 560 is lowered when used for a long time, even in this case, it is possible to appropriately adjust the elastic force by adjusting the height of the chain gear 540.

In addition, although only one support shaft 510 may be installed, a plurality of support shafts 510 may be installed for more stable support. Each of the support shafts 510 may include chain gears 540 to provide elastic force of each coil spring 560. The chain gear 540 is all connected to the chain 550, the chain 550 can be rotated, all the chain gear 540 can be rotated at the same time more quickly and easily the coil spring 560 The elastic force of the can be adjusted.

In this case, a separate door (not shown) may be formed on the side of the body 200 to open the door and rotate the chain 550 or the chain gear 540 provided therein to adjust the height, and the chain ( 550 or a motor (not shown) provided with a gear (not shown) for controlling the chain gear 540 therein, by operating a switch (not shown) from the outside to easily rotate the motor to control It becomes possible.

On the other hand, the lower portion of the height adjusting part 300 is provided with a fixing part 330, the fixing part 330 is made of a material such as rubber, synthetic rubber, silicon with a high coefficient of friction, height adjusting part 300 When the contact with the floor, not only prevents the movement of the chair more stably, but also prevents damage to the floor, it is possible to prevent the sound generated when contacting the floor.

In addition, a separate key groove 340 is formed on the side of the height adjusting part 300, the key groove 340 is inserted into a separate key (not shown) through the side of the body 200, height adjustment By allowing the part 300 to be fixed to the body 200, the electric chair fixing device of the present invention may not be operated.

In addition, the chain gear 540 is moved upward to maximize the elastic force of the coil spring 560 so that even if a heavy person sits on the seat, the height adjusting part 300 is lowered by the elastic force of the coil spring 560. It is also possible to prevent the movement of the electric chair height fixing device of the present invention so as not to move.

Although the preferred embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and the scope of the present invention extends to the scope of the present invention to those which are substantially equivalent to the embodiments of the present invention. Various modifications can be made by those skilled in the art without departing from the scope of the present invention.

Claims

It is provided in the center of the body 200 and the body 200 consisting of the upper plate member 230 and the lower plate member 290 to cover the upper portion penetrates the upper plate member 230 and the lower plate member 290 up and down In the electric chair consisting of a height adjustment unit 300 and the wheel 222 provided on the side of the body 200,

A support shaft 510 for connecting the upper plate member 230 and the lower plate member 290;

Moving up and down along the support shaft (510), the electric chair fixing device, characterized in that consisting of a sliding member (530) is installed on the side of the height adjustment portion (300).
The method of claim 1,

The support shaft 510 is provided with a coil spring 560 to elastically support the sliding member 530 from the bottom,

The lower portion of the support shaft 510, the electric chair fixing device characterized in that the spring supporting member 565 for supporting the lower portion of the coil spring (560) is provided.
The method of claim 2,

A male screw is formed on the lower outer circumferential surface of the support shaft 510,

The lower portion of the support shaft 510 is an electric chair fixing device, characterized in that the chain gear formed with a female thread corresponding to the male screw 540 is installed to support the spring support member 565 from the bottom.
The method of claim 3,

A plurality of the support shaft 510 is installed,

Chain gear 540 installed on each support shaft 510 is connected by the chain 550 to control the elasticity of the coil spring 530 by adjusting the height of each chain 540 gear at the same time through the chain. Electric chair fixing device characterized in that.
The method of claim 1,

A cylindrical fixing member 520 is installed below the height adjusting part 300,

The first flange 522 is formed on the outer circumferential surface of the fixing member 520,

The electric chair fixing device, characterized in that the sliding member 530 is fixed to the first flange 522.
The method of claim 1,

Electric chair fixing device, characterized in that the fixing portion 330 is further formed on the lower surface of the height adjustment unit (300).