KR101935385B1 - Apparatus for attaching oxygen tank to wheelchair and detaching oxygen tank from it - Google Patents

Abstract

The present invention relates to an apparatus to detachably attach an oxygen cylinder to a wheelchair, comprising: a housing installed on a predetermined portion of the wheelchair and providing a space for storing the oxygen cylinder therein; a motor installed on one side of the housing to extend a rotary shaft into the housing and providing rotating force; a power supply unit to supply power for operating the motor; a switch for controlling operation of the motor; a first gear installed in the rotary shaft of the motor extended into the housing and transferring the rotating force generated from the motor; a worm gear shaft having a second gear installed on one end thereof to receive the rotating power generated from the motor and rotated by the rotating force received through the second gear; a rotating force transfer means installed through the first and second gears, and transferring the rotating force generated from the motor to the second gear from the first gear; and a pair of jig modules moving in a direction separated and distant from each other in accordance with normal/reverse rotation of the worm gear shaft to fix or release the oxygen cylinder. As such, the oxygen cylinder fixing means including a jig and worm gear system is applied to the wheelchair, thereby easily and stably mounting the oxygen cylinder of various sizes (diameters) to the wheelchair, and easily separating the mounted oxygen cylinder from the wheelchair.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an oxygen tank for a wheelchair,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oxygen cylinder detachment device for a wheelchair, and more particularly, to an oxygen cylinder detachment device for a wheelchair which is installed on a wheelchair and fixes and releases the oxygen bottle by a jig, thereby stably mounting an oxygen bottle of various sizes The present invention relates to an oxygen cylinder detachment device for a wheelchair which can be easily separated from a wheelchair.

In hospitals, patients may be supplied with oxygen artificially for the purpose of treatment of certain diseases, alleviation of symptoms, or restoration of health. At this time, the patient who is moving using the wheelchair is supplied with oxygen by attaching the oxygen bottle to the wheelchair. However, due to the characteristics of the patient using the wheelchair, the user can freely move using the wheelchair, and thus the oxygen cylinder moves together while being mounted on the wheelchair.

As shown in FIG. 5, an auxiliary cover 400 having a pocket 410 for storing an oxygen cylinder 430 in a seat back portion of a wheelchair 440 is provided as an example of a method of mounting an oxygen cylinder on a wheelchair. And the oxygen cylinder 430 was attached to the wheelchair 440 by inserting the oxygen cylinder 430 into the bag 410. [

The conventional oxygen cylinder mounting method as described above has merits or advantages in terms of the function of attaching the oxygen cylinder to the wheelchair. However, as can be seen from the photograph of FIG. 5, in the case of an oxygen cylinder having a relatively large size (both large in diameter and a long side), the oxygen cylinder can be almost completely filled in the pocket and the oxygen cylinder can be stably maintained without flow, In the case of a small (especially, small diameter) oxygen cylinder, when it is placed in a pocket, the space of the pocket is sufficiently larger than that of the oxygen cylinder, and therefore the oxygen cylinder must flow in the pocket. In such a case, the patient may feel embarrassed or uncomfortable because of something hanging around behind his back. Further, other devices such as a hose connected to the oxygen cylinder may flow together, possibly leading to a situation in which oxygen can not be stably supplied. Further, since the oxygen cylinder is lifted up to the upper end opening of the bag to put the oxygen cylinder in the pocket, it is not easy to put the oxygen cylinder into the pocket and it is also difficult to take out the oxygen cylinder once inside the bag.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an oxygen cylinder fixing means having a jig and a worm gear system to a wheelchair to stably mount an oxygen cylinder of various sizes (diameter) on a wheelchair, And an object of the present invention is to provide an oxygen cylinder detachment device for a wheelchair which can be easily separated from a wheelchair.

In order to achieve the above object, an oxygen cylinder detachment apparatus for a wheelchair according to the present invention comprises:

A housing provided at a predetermined portion of the wheelchair and providing a space for accommodating an oxygen cylinder therein;

A motor provided on one side of the housing such that a rotating shaft extends into the housing;

A power supply unit installed at one side of the motor box in which the motor is installed and supplying power for driving the motor;

A switch installed at one side of the motor box in which the motor is installed, for controlling driving of the motor;

A first gear installed on a rotating shaft of a motor extending to the inside of the housing and transmitting rotational force generated by the motor;

A worm gear shaft installed inside the housing and provided at one end thereof with a second gear for receiving a rotational force generated by the motor and rotated by a rotational force transmitted through the second gear;

Torque transmitting means provided over a first gear provided on a rotating shaft of the motor and a second gear provided on the shaft of the worm gear and transmitting rotational force generated by the motor from the first gear to the second gear;

The worm gear shaft is horizontally movable horizontally to the worm gear shaft. The worm gear shaft moves toward or away from the worm gear shaft according to forward / reverse rotation of the worm gear shaft to fix the oxygen bottle housed in the housing or to release the fixed oxygen bottle. And a pair of jig modules.

Preferably, a jig guide member for supporting the jig module while guiding horizontal movement of the pair of jig modules is provided in the housing.

Preferably, the jig guide member is further provided with a limit switch for limiting the movement distance of the pair of jig modules in a direction away from each other.

A DC servomotor may be used as the motor.

The switch includes a forward rotation (tightening) and a reverse rotation (release) switch for selecting the forward rotation (jigging) and reverse rotation (jig release) of the motor and a stop switch for stopping the driving of the motor .

At this time, the forward rotation (fastening) and reverse rotation (release) switches may be separated by two switches or may be constituted by one selector which can select forward rotation (tightening) and reverse rotation Switch.

In addition, the worm gear shaft may be composed of a worm gear of bilateral symmetrical structure in which worm gears on both left and right sides are formed in opposite directions with respect to a center point thereof.

Further, the rotational force transmitting means may be constituted by a rubber belt (timing belt) or a chain in which teeth are formed along the longitudinal direction on the inner surface portion thereof.

The jig module includes a worm member coupled to the worm gear shaft and horizontally moving left and right, and a worm member mounted on the worm member and moving left and right according to horizontal movement of the worm member to tighten or loosen the oxygen bottle body to fix the oxygen bottle And a jig member for releasing it.

At this time, the inner surface of the jig member may be further provided with a pressure sensor for sensing the contact pressure of the oxygen passage and transmitting a corresponding signal to the control unit of the motor.

According to the present invention, an oxygen cylinder fixing means having a jig and a worm gear system is applied to a wheelchair, so that an oxygen cylinder of various sizes (diameters) can be easily and stably mounted on a wheelchair and the mounted oxygen cylinder can be easily separated from a wheelchair There is an advantage.

1 is a front view showing the configuration of an oxygen cylinder detachment apparatus for a wheelchair according to the present invention.
2 is a perspective view showing the configuration of an oxygen cylinder detachment apparatus for a wheelchair according to the present invention.
3 is a view showing a state where the oxygen cylinder detachment apparatus for a wheelchair according to the present invention is applied to a wheelchair.
FIG. 4 is a view illustrating a state in which an oxygen cylinder is mounted on an oxygen cylinder detachment apparatus of a wheelchair in a state where an oxygen cylinder detachment apparatus for a wheelchair according to the present invention is applied to a wheelchair.
5 is a view showing an example of an oxygen cylinder detachment device of a conventional wheelchair.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor can properly define the concept of the term to describe its invention in the best way Should be construed in accordance with the principles and meanings and concepts consistent with the technical idea of the present invention.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. Also, the terms " part, "" module, "and" device " Lt; / RTI >

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

FIG. 1 and FIG. 2 show an oxygen cylinder detachment apparatus for a wheelchair according to an embodiment of the present invention, wherein FIG. 1 is a front view and FIG. 2 is a perspective view.

1 and 2, an oxygen cylinder detachment apparatus 100 for a wheelchair according to the present invention includes a housing 110, a motor 120, a power supply 130, a switch 140, a first gear 150, A second gear 160, a worm gear shaft 170, a rotational force transmitting means 180, and a jig module 190. As shown in FIG.

The housing 110 is provided at a predetermined portion of the wheelchair (for example, the back portion of the seat back), and provides a space for accommodating the oxygen cylinder therein. Such a housing 110 is formed in a substantially rectangular parallelepiped box shape having a front surface and an upper surface opened. In addition, the housing 110 may be made of a metal material, a reinforced plastic material, or the like.

The motor 120 is installed at one side of the housing 110 so that the rotation axis 120s extends into the housing 110 and is driven by a power source supplied from the power supply unit 130 to provide rotational force. Here, as the motor 120, a DC servomotor may be used.

The power supply unit 130 is installed on one side of a motor box in which the motor 120 is installed and supplies power for driving the motor 120. A DC 12 V supply battery may be used as the power supply 130.

The switch 140 is provided at one side of the motor box in which the motor 120 is installed, and is for controlling the driving of the motor 120. The switch 140 is provided with forward and reverse rotation switches 141 and 142 for selecting the forward rotation (jigging) and reverse rotation (jig release) of the motor 120 And a stop switch 143 for stopping the driving of the motor 120. [ Here, the forward rotation and the reverse rotation (release) switches 141 and 142 may be separated from each other by two switches as in the present embodiment. Alternatively, the forward rotation (fastening) And a single selector switch adapted to select rotation (release).

The first gear 180 is installed on the rotation axis 120s of the motor extending to the inside of the housing 110 and transmits the rotational force generated from the motor 120. The first gear 150 may be a spur gear.

The worm gear shaft 170 is installed inside the housing 110 and a second gear 160 for receiving rotational force generated by the motor 110 is installed at one end of the worm gear shaft 170, It is rotated by the received torque. Here, the worm gear shaft 170 may be configured as a worm gear of bilateral symmetrical structure in which the worm gears on the left and right sides are formed in opposite directions with respect to the center point thereof.

The rotational force transmitting means 180 is provided over the first gear 150 provided on the rotational axis 120s of the motor and the second gear 160 provided on the worm gear shaft 170 so that the rotational force generated by the motor 120 is transmitted to the first gear 150, From the gear 150 to the second gear 160. The rotational force transmitting means 180 as described above is constituted by a rubber belt (for example, a timing belt) or a chain (for example, a chain such as a chain provided on a bicycle) having teeth formed along the longitudinal direction on the inner surface thereof .

The jig module 190 is installed horizontally horizontally on the worm wheel shaft 170 and moves in the direction of approaching or moving away from the worm wheel shaft 170 according to forward / reverse rotation of the worm wheel shaft 170, And fixes or releases the fixed oxygen cylinder. The jig module 190 includes a pair of jig modules 190 on the worm gear shaft 170, that is, one jig module 190 on the left and right sides of the center point of the worm wheel shaft 170 ) Is installed. The jig module 190 described above is mounted on the worm member 191 so as to be horizontally moved between the worm members 191 and the worm member 191, Shaped jig member 192 which moves left and right to fix or release the oxygen cylinder by tightening or loosening the body of the oxygen cylinder. In this case, the inner surface of the jig member 192 senses the contact pressure of the oxygen passage and outputs a corresponding signal to the control unit (not shown) of the motor 120 (the control board is connected to the inside of the motor box And a pressure sensor 193 for transmitting the pressure sensor 193 (not shown). When the jig member 192 moves inward to tighten the oxygen cylinder and comes into contact with the oxygen cylinder, the pressure sensor 193 senses the contact pressure (oxygen cylinder tightening pressure) of the oxygen passage from the moment and reaches the preset constant pressure level , It is intended to automatically stop the motor 120 by transmitting a corresponding signal to the motor side.

The apparatus for removing oxygen cylinders 100 of the wheelchair according to the present invention having the above-described structure preferably guides the horizontal movement of the pair of jig modules 190 inside the housing 110, while the jig module 190 The wig gear shafts 170 may be provided on the upper and lower portions of the jig guide members 195, respectively.

At least one of the guide members 195 of the upper and lower jig guide members 195 may be provided with a limit switch 196 for restricting the movement distance of the pair of jig modules 190 in the direction away from each other, ) Can be installed. When the jig module 190 is moved by a preset distance in the outward direction (in the direction in which the jig is opened) when the oxygen cylinder is disengaged, the limit switch 196 senses the jig module 190 and transmits a corresponding signal to the motor 120) automatically.

A supporting member 195s (not shown) for supporting and fixing the lower jig guide member 195 is preferably provided between the lower jig guide member 195 of the upper and lower jig guide members 195 and the bottom surface of the housing 110, ) Can be installed.

Hereinafter, the operation of the oxygen cylinder cancellation apparatus according to the present invention having the above-described configuration will be briefly described.

When the user wishes to attach an oxygen cylinder to a wheelchair in a state where the oxygen cylinder desorption apparatus 100 according to the present invention is installed in a wheelchair, the user first confirms the state of the pair of jig members 192. As a result, if it is determined that the gap between the pair of jig members 192 is not sufficient to mount the oxygen cylinder, the user presses the reverse rotation (release) switch 142 among the switches 140. Then, the motor 120 is driven to rotate (reverse rotation), and its rotational force is transmitted to the worm gear shaft (not shown) through the first gear 150, the rotational force transmitting means 180 170). As a result, the worm gear shaft 170 rotates, and the pair of worm members 191 move in directions away from each other as the worm gear shaft 170 rotates. As a result, the pair of jig members 192 provided on the pair of worm members 191 move in directions away from each other, and eventually the gap between the pair of jig members 192 becomes wide. At this time, the user keeps watch on the interval gap of the pair of jig members 192 and presses the stop switch 143 of the switch 140 at a time when it is judged that the interval is wide enough. Then, the operation of the motor 120 is stopped, and the pair of jig members 192 maintains a state in which the jig members 192 are spread at an interval enough to mount the oxygen cylinder. Although the user can directly stop the operation of the motor 120 by pressing the stop switch 143 as described above, even if the user does not press the stop switch 143, the pair of the worm members 191 are outward The limit switch 196 is activated and the driving of the motor 120 may be automatically stopped by the sequence control of the control unit.

Thus, in a state where the gap between the pair of jig members 192 is sufficiently wide, the user places the oxygen cylinder on the bottom surface of the housing 110 and then presses the forward rotation (tightening) switch 141. The rotation of the motor 120 is transmitted to the worm gear shaft 170 through the first gear 150, the rotational force transmitting means 180 and the second gear 160. As a result, the worm gear shaft 170 rotates, and the pair of worm members 191 move in the direction in which they approach each other as the worm gear shaft 170 rotates. As a result, the pair of jig members 192 also move in the direction of approaching each other, and eventually the pair of jig members 192 come into contact with the oxygen bottle and tighten the oxygen bottle. At this time, the user watches the state where the pair of jig members 192 moves to the inside and tightens the oxygen cylinder, and when the pair of jig members 192 judges that the oxygen cylinder is properly tightened, 143). Then, the operation of the motor 120 is stopped, and the pair of jig members 192 maintains a state of tightening (fixing) the oxygen cylinder. As described above, although the user can directly stop the operation of the motor 120 by pressing the stop switch 143, even if the user does not press the stop switch 143, the pair of jig members 192 can be operated to tighten the oxygen cylinder When the pressure sensor 193 moves inward and comes into contact with the oxygen cylinder, the pressure sensor 193 operates from the moment to sense the contact pressure (oxygen cylinder tightening pressure) of the oxygen passage and reaches a predetermined constant pressure level, Similarly, the drive of the motor 120 may be automatically stopped by the sequence control of the control unit.

On the other hand, in the case where the oxygen cylinder is mounted on the wheelchair and the oxygen cylinder is separated from the wheelchair as described above, the user presses the reverse rotation (release) switch among the switches 140. Then, the worm gear shaft 170 and the worm member 191 are operated, and the pair of jig members 192 is rotated by the rotation of the motor 120. Thus, That is, the pair of jig members 192 are spaced apart to release the state in which the oxygen cylinder is tightened. Accordingly, the user can easily separate the oxygen cylinder from the wheelchair.

As described above, the oxygen cylinder detachment device for a wheelchair according to the present invention can easily and stably mount an oxygen cylinder of various sizes (diameters) on a wheel chair by applying an oxygen cylinder fixing means having a jig and a worm gear system to a wheelchair, The installed oxygen cylinder can be easily separated from the wheelchair.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications may be made without departing from the spirit and scope of the invention. Be clear to the technician. Accordingly, the true scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of the same should be construed as being included in the scope of the present invention.

110: housing 120: motor
130: power supply 140: switch
141: forward rotation (tightening) switch 142: reverse rotation (release) switch
143: stop switch 150: first gear
160: second gear 170: worm gear shaft
180: rotational force transmitting means 190: jig module
191: Warm member 192: Jig member
193: pressure sensor 195: jig guide member
195s: Support member 196: Limit switch
300, 440: wheelchair 350, 430:
400: auxiliary cover 410: pocket

Claims (10)

A housing provided at a predetermined portion of the wheelchair and providing a space for accommodating an oxygen cylinder therein;
A motor provided on one side of the housing such that a rotating shaft extends into the housing;
A power supply unit installed at one side of the motor box in which the motor is installed and supplying power for driving the motor;
A switch installed at one side of the motor box in which the motor is installed, for controlling driving of the motor;
A first gear installed on a rotating shaft of a motor extending to the inside of the housing and transmitting rotational force generated by the motor;
And a second gear is provided at one end of the housing to receive a rotational force generated by the motor. The second gear is rotated by a rotational force transmitted through the second gear, and the worm gear A worm gear shaft formed of a worm gear having a symmetrical structure in which the worm gears are formed in opposite directions to each other;
Torque transmitting means provided over a first gear provided on a rotating shaft of the motor and a second gear provided on the shaft of the worm gear and transmitting rotational force generated by the motor from the first gear to the second gear;
The worm gear shaft is horizontally movable horizontally to the worm gear shaft. The worm gear shaft moves toward or away from the worm gear shaft according to forward / reverse rotation of the worm gear shaft to fix the oxygen bottle housed in the housing or to release the fixed oxygen bottle A pair of jig modules,
Wherein the housing is provided with a jig guide member for guiding horizontal movement of the pair of jig modules laterally and supporting the jig module.
delete The method according to claim 1,
Wherein the jig guide member is further provided with a limit switch for limiting a movement distance of the pair of jig modules in a direction away from each other.
The method according to claim 1,
Wherein the motor is a DC servomotor.
The method according to claim 1,
The switch includes a forward rotation (tightening) and a reverse rotation (release) switch for selecting the forward rotation (jigging) and reverse rotation (jig release) of the motor and a stop switch for stopping the drive of the motor Of the oxygenator of the wheelchair.
6. The method of claim 5,
The forward rotation and the reverse rotation are constituted by two switches or by a single selector switch which can select forward rotation and reverse rotation by the left and right rotations Characterized in that the oxygenator detachment device of the wheelchair.
The method according to claim 1,
Wherein the worm gear shaft is composed of a worm gear having left and right symmetrical structures in which worm gears on both left and right sides are formed in opposite directions with respect to the center point thereof.
The method according to claim 1,
Wherein the rotational force transmitting means comprises a rubber belt or a chain in which teeth are formed along the longitudinal direction on an inner surface portion thereof.
The method according to claim 1,
The jig module includes a worm member coupled to the worm gear shaft and horizontally moving left and right, and a worm member mounted on the worm member. The jig module moves left and right according to horizontal movement of the worm member to tighten or loosen the oxygen bottle, And a jig member.
10. The method of claim 9,
Wherein an inner surface of the jig member is further provided with a pressure sensor for sensing a contact pressure of oxygen passage and transmitting a corresponding signal to a control unit of the motor.

Images