Stair climbing wheelchair auxiliary system

Abstract

The utility model relates to the field of stair-climbing wheelchairs, in particular to an auxiliary system of a stair-climbing wheelchair, which comprises a seat, a seat rotating mechanism, a bottom frame, a crawler belt, a crawler belt retracting mechanism and walking wheels, and further comprises an end point sensing control mechanism and a position sensing control mechanism. When a user feels fears, the first rotary swing rod which is originally in a horizontal state rotates, that is, the working end of the first proximity switch cannot sense the first rotary swing rod, and at the moment, the first proximity switch transmits a signal to the controller to control the ascending operation button to be powered on, so that the user can start the crawler belt to move, and the user is prevented from being fetched. Meanwhile, when the robot walks on the stairs, whether the robot is on the stairs or not can be sensed through the position sensing control mechanism, and then the working power of the motor is changed, so that the speed can be increased when the robot walks on the stairs.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of stair -climbing wheelchairs, in particular to a stair -climbing wheelchair auxiliary system. BACKGROUND

[0002] In the process of the stair -climbing wheelchair going up or down along the stairs, since the automatic control walking movement is carried out through the track, therefore, it is necessary to design the control system that the track can stop automatically when reaching the topmost layer or the bottommost layer of the stairs, therefore, in the prior art, application number: CN2023228568335, name: high perception automatic stair -climbing machine system, the application perceives the position of the stairs through the setting of two photoelectric switches, so that the stair -climbing machine can stop moving at the highest point and the lowest point, but in the process of use and sale, when going up to the highest point position, since the track will incline towards the stair platform, the photoelectric switch will be inducted again, so that the track continues to walk, at this time, it will cause the patient and the operator to be too panic and dangerous, so that the product return rate increases. On the other hand, when the track walks on the stairs, the speed is slow, which causes the user to walk on the stairs, affecting the walking of others. Therefore, it is necessary to design the stair -climbing wheelchair auxiliary system, which can stop the movement of the wheelchair when the wheelchair goes up to the highest point position, and only the user can continue to move by operation, when the wheelchair walks on the stairs, the walking speed of the wheelchair can be increased, so as to avoid affecting others to go up and down the stairs. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a stair -climbing wheelchair auxiliary system.

[0004] In order to achieve this purpose, the utility model adopts the following technical scheme:

[0005] Provide a stair -climbing wheelchair auxiliary system, including seat, seat rotating mechanism, undercarriage, track, track contraction mechanism and walking wheel, seat rotating mechanism is fixedly installed on the undercarriage, seat is fixedly installed on seat rotating mechanism, seat rotating mechanism is used to drive seat to rotate, track contraction mechanism is fixedly installed at the bottom of the undercarriage, track is fixedly installed on track contraction mechanism, track contraction mechanism is used to push track downward, walking wheel is fixedly installed on both sides of the undercarriage, track is fixedly provided with photoelectric switch one and photoelectric switch two, photoelectric switch two is used to induct the position when going up to the highest point, photoelectric switch one is used to induct the position when going down to the lowest point, its characterized in that, still include end point inductive control mechanism and position inductive control mechanism, end point inductive control mechanism is fixedly installed on seat, end point inductive control mechanism is used to replace photoelectric switch two and work when going up to the highest point, position inductive control mechanism is fixedly installed on track, and position inductive control mechanism is used to control the walking speed of track.

[0006] Further, the end point sensing control mechanism comprises a containing box one, a rotating swing rod one and a proximity switch one, the containing box one is fixedly installed on the seat, the rotating swing rod one is rotatably installed on the containing box one, and the proximity switch one is fixedly installed on the left side of the rotating swing rod one; when the proximity switch one cannot sense the rotating swing rod one, the proximity switch one transmits a signal to the controller.

[0007] Further, the position sensing control mechanism comprises a containing box two, a rotating swing rod two and a proximity switch two, the containing box two is fixedly installed on the chassis, the rotating swing rod two is rotatably installed in the containing box two, and the proximity switch two is fixedly installed on the right side of the containing box two; when the proximity switch two cannot sense the rotating swing rod two, the proximity switch two transmits a signal to the controller.

[0008] Further, the rotating swing rod one is in a triangular structure, and the top of the rotating swing rod one is hinged to the containing box one.

[0009] Further, the seat rotating mechanism comprises a hinge rod and an electric push rod, one end of the hinge rod is hinged to the middle part of the seat, the other end of the hinge rod is hinged to the chassis, one end of the electric push rod is hinged to the head of the seat, and the other end of the electric push rod is hinged to the chassis.

[0010] Further, the end point sensing control mechanism is an angle sensor.

[0011] The user can start the track to move when the user presses the seat downward, the rotating swing rod one in the horizontal state rotates, the working end of the proximity switch one cannot sense the rotating swing rod one, the proximity switch one transmits a signal to the controller, the uplink operation button is powered on, and the user can start the track to move, so that the user can avoid panic. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiment of the utility model.

[0013] Fig. 1 It is the front view of the installation state of the utility model;

[0014] Fig. 2 It is the front view of the other side of the utility model;

[0015] In the figure: 1, terminal point induction control mechanism; 1a, containing box one; 1b, rotating swing rod one; 1c, proximity switch one; 2, position induction control mechanism; 2a, containing box two; 2b, rotating swing rod two; 2c, proximity switch two; 3, seat; 4, seat rotating mechanism; 4a, hinged rod; 4b, electric push rod; 5, underframe; 6, crawler belt; 7, crawler belt contraction mechanism; 8, walking wheel; 9, stair; 10, photoelectric switch one; 11, photoelectric switch two. DETAILED DESCRIPTION

[0016] The technical scheme of the utility model will be further explained below in combination with the drawings and through specific embodiments.

[0017] Among them, the drawings are only used for example explanation, and the representation is only a schematic diagram, not a real object diagram, and cannot be understood as a limitation on the patent; in order to better illustrate the embodiments of the utility model, some components of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product.

[0018] Reference Figs. 1-2The illustrated stair climbing wheelchair auxiliary system includes a seat 3, a seat rotating mechanism 4, a chassis 5, a track 6, a track retracting mechanism 7, and a walking wheel 8. The seat rotating mechanism 4 is fixedly installed on the chassis 5, the seat 3 is fixedly installed on the seat rotating mechanism 4, the seat rotating mechanism 4 is used to drive the seat 3 to rotate, the track retracting mechanism 7 is fixedly installed at the bottom of the chassis 5, the track 6 is fixedly installed on the track retracting mechanism 7, the track retracting mechanism 7 is used to push the track 6 downward, the walking wheel 8 is fixedly installed on both sides of the chassis 5. When it is needed to walk upstairs, the track 6 is pushed downward by the track retracting mechanism 7, so that the bottom of the track 6 exceeds the bottom of the walking wheel 8, and then the track 6 is walked along the stairs 9. The photoelectric switch one 10 and the photoelectric switch two 11 are fixedly arranged on the track 6. The photoelectric switch two 11 is used to sense the position when climbing to the highest point. When climbing to the highest point, the photoelectric switch two 11 cannot sense the steps of the stairs. The photoelectric switch one 10 is used to sense the position when descending to the lowest point. When descending to the lowest point, the photoelectric switch one 10 cannot sense the steps of the stairs. When the photoelectric switch two 11 and the photoelectric switch one 10 cannot sense the steps of the stairs, the track stops working. The end point sensing control mechanism 1 and the position sensing control mechanism 2 are further included. The end point sensing control mechanism 1 is fixedly installed on the seat 3. The end point sensing control mechanism 1 is used to work instead of the photoelectric switch two 11 when climbing to the highest point. Because the photoelectric switch two 11 cannot sense the stairs, the track stops working. At this time, the end point sensing control mechanism 1 is needed to work instead. The upstairs operation button can be powered. At this time, the user can operate the wheelchair to increase safety at the highest point. The specific operation logic is as follows: when the photoelectric switch two 11 cannot sense, the controller switches the end point sensing control mechanism 1 to power on. At this time, the user presses the seat 3 downward. The sensor senses the change in angle to start, that is, the signal is transmitted to the controller. The controller controls the upstairs operation button to be powered on. The user can operate the button to make the wheelchair continue to move upward. The position sensing control mechanism 2 is fixedly installed on the track. The position sensing control mechanism 2 is used to control the walking speed of the track 6. When the stair climbing wheelchair moves to the stairs, the position sensing control mechanism 2 will start by changing the slope. The button operated by the user to slowly walk the track will change to a fast walking button. The specific speed switching changes the resistance of the circuit. By changing the resistance of the circuit, the power of the motor increases when fast walking is needed, so that the track can walk fast. By this fast walking, the user can operate the stair climbing wheelchair to move on the stairs, and the moving speed of the wheelchair can be faster.

[0019] The end point sensing control mechanism 1 comprises a containing box 1a, a rotating swing rod 1b and a proximity switch 1c. The containing box 1a is fixedly installed on the seat 3, the rotating swing rod 1b is rotatably installed on the containing box 1a, and the proximity switch 1c is fixedly installed on the left side of the rotating swing rod 1b. When the proximity switch 1c cannot sense the rotating swing rod 1b, the proximity switch 1c will send a signal to the controller. When the user presses the seat 3 downward, the originally horizontal rotating swing rod 1b will rotate, i.e. the working end of the proximity switch 1c cannot sense the rotating swing rod 1b, at this time, the proximity switch 1c will send a signal to the controller, and the controller controls the upper operation button to be powered on, so that the user can start the track 6 to move.

[0020] When moving to the stair platform, the proximity switch 1c will sense the rotating swing rod 1b, and the controller will control the end point sensing control mechanism 1 to stop working, and the photoelectric switch 11 will work again.

[0021] The position sensing control mechanism 2 comprises a containing box 2a, a rotating swing rod 2b and a proximity switch 2c. The containing box 2a is fixedly installed on the chassis 5, the rotating swing rod 2b is rotatably installed in the containing box 2a, and the proximity switch 2c is fixedly installed on the right side of the containing box 2a. When the proximity switch 2c cannot sense the rotating swing rod 2b, the proximity switch 2c will send a signal to the controller. When the stair climbing wheelchair is on the stairs, the working end of the proximity switch 2c cannot sense the rotating swing rod 2b in the horizontal position, i.e. the proximity switch 2c will send a signal to the controller, the controller controls the resistance of the circuit to change, i.e. the working efficiency of the motor connected to the track is high, and the button operated by the user can speed up the walking speed of the track. When walking on the ground, the track does not need to walk, and the walking wheels of the wheelchair are used.

[0022] When moving to the stair platform, the proximity switch 2c will sense the rotating swing rod 2b, and the controller will control the motor to restore the initial moving speed.

[0023] It needs to be explained that when the photoelectric switch 11 cannot sense the stairs, the track is out of the stairs Fig. 2 It can be seen that when the photoelectric switch 1 cannot sense the ground, the wheelchair is on the ground, so there is no need to set the track to stop moving.

[0024] The rotating swing rod 1b is in a triangular structure, the top of the rotating swing rod 1b is hinged with the accommodating box 1a, through the three angular structures, the rotating swing rod 1b can be in a horizontal state through the gravity action, and is used for sensing the proximity switch 1c. Meanwhile, the rotating swing rod 2b is also the same principle.

[0025] The seat rotating mechanism 4 comprises a hinged rod 4a and an electric push rod 4b, one end of the hinged rod 4a is hinged with the middle part of the seat 3, the other end of the hinged rod 4a is hinged with the chassis 5, one end of the electric push rod 4b is hinged with the head of the seat 3, the other end of the electric push rod 4b is hinged with the chassis 5. Through the work of controlling the electric push rod 4b, the seat 3 can be in a horizontal state in the process of climbing stairs, so that the patient has a better sense of security, and the rotating swing rod 1b can be in a horizontal state.

[0026] The end point sensing control mechanism 1 is an angle sensor. When the end point sensing control mechanism 1 is started, the control is that the track can continue to work, and if the rotating swing rod 1b structure is used, the wheelchair will shake when walking on the flat ground due to the uneven ground, that is, the control starting condition occurs, which causes the user to be in panic, and the return rate increases.

[0027] The above is only the preferred embodiment of the present application, it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, can make a number of improvements and deformation, these improvements and deformation should also be considered as the protection scope of the present application.

Claims

1. A stair climbing wheelchair assist system, comprising a seat (3), a seat rotating mechanism (4), a base frame (5), a crawler track (6), a crawler track retraction mechanism (7) and a running wheel (8), wherein the seat rotating mechanism (4) is fixedly mounted on the base frame (5), the seat (3) is fixedly mounted on the seat rotating mechanism (4), the seat rotating mechanism (4) is used to drive the seat (3) to rotate, the crawler track retraction mechanism (7) is fixedly mounted on the bottom of the base frame (5), the crawler track (6) is fixedly mounted on the crawler track retraction mechanism (7), the crawler track retraction mechanism (7) is used to push the crawler track (6) downward, the running wheel (8) is fixedly mounted on both sides of the base frame (5), a photoelectric switch 1 (10) and a photoelectric switch 2 (11) are fixedly provided on the crawler track (6), the photoelectric switch 2 (11) is used to sense the position when ascending to the highest point, and the photoelectric switch 1 (10) is used to sense the position when descending to the lowest point, characterized in that: The invention also includes an end point sensing control mechanism (1) and a position sensing control mechanism (2). The end point sensing control mechanism (1) is fixedly mounted on the seat (3). The end point sensing control mechanism (1) is used to replace the photoelectric switch 2 (11) to work when the vehicle reaches the highest point. The position sensing control mechanism (2) is fixedly mounted on the crawler. The position sensing control mechanism (2) is used to control the walking speed of the crawler (6).

2. The stair climbing wheelchair assist system according to claim 1, wherein: The end point sensing control mechanism (1) comprises a housing box (1a), a rotating rocker arm (1b) and a proximity switch (1c), wherein the housing box (1a) is fixedly mounted on the seat (3), the rotating rocker arm (1b) is rotatably mounted on the housing box (1a), and the proximity switch (1c) is fixedly mounted on the left side of the rotating rocker arm (1b). When the proximity switch (1c) cannot sense the rotating rocker arm (1b), the proximity switch (1c) transmits a signal to the controller.

3. The stair climbing wheelchair assist system according to claim 1 or 2, wherein: The position sensing control mechanism (2) comprises a second accommodating box (2a), a second rotating rocker arm (2b) and a second proximity switch (2c). The second accommodating box (2a) is fixedly mounted on a base frame (5), the second rotating rocker arm (2b) is rotatably mounted in the second accommodating box (2a), and the second proximity switch (2c) is fixedly mounted on the right side of the second accommodating box (2a). When the second proximity switch (2c) cannot sense the second rotating rocker arm (2b), the second proximity switch (2c) transmits a signal to the controller.

4. The stair climbing wheelchair assist system according to claim 2, wherein: The rotating rocker arm 1 (1b) is in a triangular structure, and the top of the rotating rocker arm 1 (1b) is hinged to the receiving box 1 (1a).

5. The stair climbing wheelchair assist system according to claim 1, wherein: The seat rotation mechanism (4) comprises an articulated rod (4a) and an electric push rod (4b), one end of the articulated rod (4a) is articulated to the middle of the seat (3), the other end of the articulated rod (4a) is articulated to the base frame (5), one end of the electric push rod (4b) is articulated to the head of the seat (3), and the other end of the electric push rod (4b) is articulated to the base frame (5).

6. The stair climbing wheelchair assist system according to claim 1, wherein: The end point sensing control mechanism (1) is an angle sensor.

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