CN220655817U

CN220655817U - Electric wheelchair handle

Info

Publication number: CN220655817U
Application number: CN202321812131.0U
Authority: CN
Inventors: 魏福武
Original assignee: Zhongshan New Galaxy Drive Industry Co ltd
Current assignee: Zhongshan New Galaxy Drive Industry Co ltd
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2024-03-26
Anticipated expiration: 2033-07-10

Abstract

The utility model relates to the technical field of grips, and particularly discloses an electric wheelchair grip, which comprises: the electric wheelchair comprises a rotary handle, a fixed handle seat, a power switch and a steering recognition device, wherein the rotary handle is hinged to one end of the fixed handle seat, the rotary handle is in rotary fit with the power switch, an inductive switch is arranged inside the power switch, the steering recognition device comprises a steering reset piece, a supporting circular ring is arranged at the top of the steering reset piece, a pipe sleeve base is arranged at the bottom of the supporting circular ring, a Hall sensor is arranged outside the pipe sleeve base, a magnetic block for sensing by the Hall sensor is arranged outside the supporting circular ring, the Hall sensor is in mutual inductive fit with the inductive switch, the electric wheelchair is controlled by the rotary handle to drive by the rotary handle, and the electric wheelchair can be timely power-off protected in the steering process when steering is convenient to rotate, so that the rollover condition caused by overlarge steering power is prevented.

Description

Electric wheelchair handle

Technical Field

The utility model relates to the technical field of grips, in particular to an electric wheelchair grip.

Background

The wheelchair is provided with wheels and can help to replace a walking chair, and is an important moving tool for home rehabilitation, turnover transportation, medical treatment and outgoing activities of wounded persons, patients and disabled persons; the wheelchair not only meets the riding instead of walking requirements of disabled limbs and people with mobility impairment, but also is more important to facilitate the movement of family members and care of patients, so that the patients can exercise and participate in social activities by means of the wheelchair.

The common wheelchair generally comprises a foldable frame, left and right side plates, front and rear wheels, left and right knee pads, foot pedals, left and right armrests, a handle brake device, a chair, a backrest, a medical image data bag, a urine receiving bag hook and the like.

The driving can be divided into an electric wheelchair and a manual wheelchair: functionally, the wheelchair can be classified into a standard wheelchair, a nursing wheelchair, a toilet chair, a cerebral palsy chair, a sports wheelchair, a bearing wheelchair, an auxiliary standing wheelchair, an airplane wheelchair, a beach wheelchair and the like.

The manual wheelchair is mainly driven by a hand wheel, and is driven by hand and driven by hand, wherein the manual wheelchair is provided with a hand driving device on the basis of a common wheelchair, the electric wheelchair can be divided into a rear drive, a middle drive and a rear drive from the drive, an electronic power assisting system is additionally arranged on the basis of the common wheelchair, the physical consumption of a user is reduced, the intelligent wheelchair is provided with a plurality of intelligent modules such as positioning movement, standing movement, remote control movement, relative Internet+auxiliary life and the like on the basis of the electric wheelchair, the conventional manual wheelchair and the electric wheelchair are provided with rear grips, and the rear grips are convenient for a rear operator to push the manual wheelchair to move or rotate the wheelchair on the electric wheelchair for steering adjustment.

For example, refer to the chinese patent publication No. CN211023595U, entitled "a stock type wheelchair brake handle structure", which includes a wheelchair body, wheels are disposed on two sides of the wheelchair body, brake assemblies are disposed between the two wheels and the wheelchair body, a handrail frame is disposed on one side of the wheelchair body, a stock type handle is fixed on two sides of the handrail frame, which is far away from the wheelchair body, by bolts, trigger blocks are hinged on two sides of the handrail frame, two trigger blocks are connected with traction assemblies, one ends of the two traction assemblies are connected with the two brake assemblies respectively, arc bars are clamped between the two stock type handles and the handrail frame, which is close to the trigger block, for realizing convenient gripping and braking, and the handle cannot control the electric wheelchair to drive, so that the problem of inconvenient use is caused.

Therefore, how to realize the control and drive of the electric wheelchair by the grip is a technical problem that needs to be solved by the current technicians.

Disclosure of Invention

The present utility model has been made in view of the above-mentioned problems occurring in the prior art, and an object of the present utility model is to provide an electric wheelchair grip.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an electric wheelchair grip comprising:

the steering device comprises a rotary handle, a fixed handle seat, a power switch and a steering identification device;

the rotary handle is hinged to one end of the fixed handle seat, the rotary handle is in rotary fit with the power switch, an inductive switch is arranged in the power switch, and the other end of the fixed handle seat drives the steering identification device to rotate;

the steering recognition device comprises a steering reset piece, the top of the steering reset piece is provided with a supporting circular ring, the bottom of the supporting circular ring is provided with a pipe sleeve base, a Hall sensor is arranged outside the pipe sleeve base, the supporting circular ring and the pipe sleeve base are mutually spliced to form a containing cavity for the steering reset piece to install, a magnetic block for the Hall sensor to steer and sense is arranged outside the supporting circular ring, and the Hall sensor is mutually in sensing fit with the sensing switch.

Preferably, the first clamping groove is formed in the bottom of the supporting circular ring, the first clamping groove clamps one end of the steering reset piece, the limiting groove and the second clamping groove are formed in the pipe sleeve base respectively, the other end of the steering reset piece is clamped with the second clamping groove, the installation limiting part is further arranged on the outer portion of the steering reset piece, and the installation limiting part is matched with the limiting groove.

Preferably, the installation limiting part is arranged corresponding to the bottom of the magnetic block.

Preferably, two symmetrically arranged grooves are respectively formed in the outer portion of the supporting circular ring, and the magnetic blocks are arranged in the grooves.

Preferably, a rotating inner tube is arranged in the rotating handle in a penetrating way, the power switch is sleeved on the rotating inner tube, and the rotating inner tube extends to one end of the fixed handle seat.

Preferably, the steering reset piece is wound on the other end of the fixed handle seat, and two ends of the steering reset piece extend outwards.

Preferably, the outside of supporting the ring evenly distributed all around has the mounting hole, the top of pipe box base is provided with the installation bayonet socket, the mounting hole sets up with the installation bayonet socket is relative, the top of pipe box base with the bottom looks joint of supporting the ring.

Preferably, a brake handle is further arranged outside the fixed handle seat, a touch switch is arranged inside the brake handle, and the touch switch is abutted to the outer side of the power switch.

Compared with the prior art, the technical scheme is provided with the rotary handle, the fixed handle seat, the power switch and the steering recognition device; the rotary handle is hinged to one end of the fixed handle seat, the rotary handle is in rotary fit with the power switch, the rotary handle is rotated to open or close the power switch, the rotary handle is rotated to control the power switch to open or close, and then the rotary handle is rotated to control driving power on or power off of the wheelchair, and further the wheelchair is controlled through the rotary handle to drive the driving effect, wherein the induction switch is arranged inside the power switch, the other end of the fixed handle seat drives the steering recognition device to rotate, the steering recognition device comprises a steering reset piece, a supporting circular ring is arranged at the top of the steering reset piece, a pipe sleeve base is arranged at the bottom of the supporting circular ring, a containing cavity for the steering reset piece is formed by mutually splicing the supporting circular ring and the pipe sleeve base, a magnetic block for the steering induction of the Hall sensor is arranged outside the supporting circular ring, the fixed handle seat drives the steering recognition device to rotate, the magnetic induction recognition steering effect of the Hall sensor and the magnetic block is achieved through the Hall sensor, the small-amplitude steering recognition steering is achieved, a steering signal is output, and the fixed power is prevented from being turned through the steering device, and the fixed power switch is driven to rotate the fixed power seat is prevented from being rotated to rotate, and the power is enabled to rotate the wheelchair is in a safe state.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of the overall structure of the present utility model.

Fig. 2 is a schematic structural view of the rotary inner tube of the present utility model.

Fig. 3 is a schematic structural view of the support ring of the present utility model.

Fig. 4 is a schematic view of the pipe socket base structure of the present utility model.

The labels in the figures are shown in combination: 1. rotating the handle; 2. a fixed handle seat; 3. a power switch; 4. a steering recognition device; 5. a hall sensor; 6. a magnetic block; 7. a brake handle; 11. rotating the inner tube; 31. an inductive switch; 41. turning to a reset piece; 42. a support ring; 43. a pipe sleeve base; 71. a touch switch; 88. a first clamping groove; 99. a limit groove; 100. a second clamping groove; 101. a mounting limit part; 420. a mounting hole; 421. a groove; 430. and (5) installing a bayonet.

Detailed Description

Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein, but rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present application, it should be understood that the terms "thickness," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application; furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated; thus, the definition of "first", "second" is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly including one or more such features.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Referring to fig. 1 to 4, an electric wheelchair grip includes:

a rotary handle 1, a fixed handle seat 2, a power switch 3 and a steering identification device 4;

the rotary handle 1 is hinged to one end of the fixed handle seat 2, the rotary handle 1 is in rotary fit with the power switch 3, an inductive switch 31 is arranged in the power switch 3, and the other end of the fixed handle seat 2 drives the steering identification device 4 to rotate;

the steering recognition device 4 comprises a steering reset piece 41, the top of the steering reset piece 41 is provided with a supporting circular ring 42, the bottom of the supporting circular ring 42 is provided with a pipe sleeve base 43, a Hall sensor 5 is arranged outside the pipe sleeve base 43, the supporting circular ring 42 and the pipe sleeve base 43 are mutually spliced to form a containing cavity for the steering reset piece 41 to be arranged, a magnetic block 6 for the Hall sensor 5 to sense is arranged outside the supporting circular ring 42, and the Hall sensor 5 is mutually in inductive fit with the inductive switch 31.

In this embodiment, the bottom of the supporting ring 42 is provided with a first clamping groove 88, the first clamping groove 88 clamps one end of the steering restoring member 41, the inside of the pipe sleeve base 43 is provided with a limiting groove 99 and a second clamping groove 100 respectively, the other end of the steering restoring member 41 is clamped with the second clamping groove 100, and the outside of the steering restoring member 41 is further provided with an installation limiting part 101, and the installation limiting part 101 is matched with the limiting groove 99.

In this embodiment, the installation limiting portion 101 is provided corresponding to the bottom of the magnetic block 6.

In this embodiment, two symmetrically arranged grooves 421 are respectively formed on the outer portion of the supporting ring 42, and the magnetic blocks 6 are disposed inside the grooves 421.

In this embodiment, a rotating inner tube 11 is inserted into the rotating handle 1, the power switch 3 is sleeved on the rotating inner tube 11, and the rotating inner tube 11 extends to one end of the fixed handle seat 2.

In this embodiment, the steering restoring member 41 is wound around the other end of the fixed handle base 2, and two ends of the steering restoring member 41 extend outwards.

In this embodiment, the supporting ring 42 is uniformly provided with mounting holes 420 around the outside, the top of the socket base 43 is provided with mounting bayonets 430, the mounting holes 420 are opposite to the mounting bayonets 430, and the top of the socket base 43 is clamped with the bottom of the supporting ring 42.

In this embodiment, a brake handle 7 is further disposed outside the fixed handle base 2, a touch switch 71 is disposed inside the brake handle 7, and the touch switch 71 is abutted to the outer side of the power switch 3.

Example 1

For realizing the effect of rotating the rotary handle and then controlling the wheelchair to drive, referring to fig. 1, the technical scheme includes: the steering device is provided with a rotary handle 1, a fixed handle seat 2, a power switch 3 and a steering recognition device 4; the rotary handle 1 is hinged to one end of the fixed handle seat 2, the rotary handle 1 is in rotary fit with the power switch 3, the power switch 3 is turned on or off through the rotation of the rotary handle 1 in the process of rotating the rotary handle 1, the rotary handle is rotated to further control the power switch 3 to be turned on or turned off, then the driving mechanism of the wheelchair is controlled to be electrified or powered off through the rotary handle, the wheelchair is controlled to be driven through the rotary handle, and the other end of the fixed handle seat 2 is driven to rotate by the steering identification device 4 through the induction switch 31 arranged inside the power switch 3.

The power switch 3 is connected to a driving mechanism of the wheelchair, wherein the driving mechanism of the wheelchair generally adopts a servo motor, and the servo motor (servo motor) is an engine for controlling the operation of mechanical elements in the servo system, and is an indirect speed change device for assisting the motor.

The servo motor can control the speed, the position accuracy is very accurate, and the voltage signal can be converted into the torque and the rotating speed to drive the control object. The rotation speed of the rotor of the servo motor is controlled by an input signal, can react quickly, is used as an executive component in an automatic control system, has the characteristics of small electromechanical time constant, high linearity and the like, and can convert the received electric signal into angular displacement or angular speed output on the motor shaft. The motor is divided into two major types of direct current and alternating current servo motors, and is mainly characterized in that when the signal voltage is zero, no autorotation phenomenon exists, and the rotating speed is reduced at a constant speed along with the increase of the torque.

Example two

In order to realize the steering effect, referring to fig. 1, 3 and 4, the technical scheme includes: the fixed handle seat 2 is driven to rotate through the rotating handle 1, the other end of the fixed handle seat 2 drives the steering recognition device 4 to rotate, the steering recognition device 4 comprises a steering reset piece 41, a supporting circular ring 42 is arranged at the top of the steering reset piece 41, a pipe sleeve base 43 is arranged at the bottom of the supporting circular ring 42, a Hall sensor 5 is arranged outside the pipe sleeve base 43, the supporting circular ring 42 and the pipe sleeve base 43 are mutually spliced to form a containing cavity for the steering reset piece 41 to install, a magnetic block 6 for the Hall sensor 5 to sense is arranged outside the supporting circular ring 42, the magnetic induction of the Hall sensor 5 and the magnetic block 6 achieves the effect of recognizing steering when the fixed handle seat 2 drives the steering recognition device 4 to rotate, a steering signal can be recognized when the steering is small-amplitude steering is achieved, and a manipulator is convenient to control the steering of the wheelchair while time and labor are saved.

Example III

In order to achieve the purpose of turning the fixed handle seat 2 to conduct power-off protection on the wheelchair in the steering process, a user is prevented from triggering the power switch 3 in the steering process of holding the handle to drive the fixed handle seat 2, so that the situation that the electric wheelchair is dangerously powered during steering occurs is caused, and referring to fig. 1 to 4, the technical scheme comprises: the steering recognition device 4 comprises a steering reset piece 41, a supporting circular ring 42 is arranged at the top of the steering reset piece 41, a pipe sleeve base 43 is arranged at the bottom of the supporting circular ring 42, a Hall sensor 5 is arranged outside the pipe sleeve base 43, the supporting circular ring 42 and the pipe sleeve base 43 are mutually spliced to form a containing cavity for the steering reset piece 41 to install, a magnetic block 6 for the Hall sensor 5 to sense is arranged outside the supporting circular ring 42, the magnetic induction of the Hall sensor 5 and the magnetic block 6 is used for recognizing steering when the fixed handle seat 2 drives the steering recognition device 4 to rotate, the Hall sensor 5 and the induction switch 31 are mutually in induction fit, the Hall sensor 5 is started to prevent the power switch 3 from being in an on state when the fixed handle seat 2 rotates after the Hall sensor 5 works, and the fixed handle seat 2 is prevented from being driven in the steering process by holding the rotating handle 1, so that the fixed handle seat 2 is driven to turn, and the safe steering is achieved.

Example IV

In order to ensure the function of power-off protection in the braking process and improve the effect of safety braking, referring to fig. 1 to 2, the technical scheme comprises: the brake handle 7 is arranged outside the fixed handle seat 2, the touch switch 71 is arranged inside the brake handle 7, and the touch switch 71 is abutted against the outer side of the power switch 3, so that the brake handle 7 is pressed to brake in the process of braking by using the brake handle 7, the touch switch 71 is driven by the brake handle 7 to touch and close the power switch 3 when the brake handle 7 is arranged to brake, the brake power failure is achieved, the safety braking is achieved, and the situation that a driving mechanism still operates to cause poor braking effect after braking is prevented.

The principle of the touch switch is that the chip is transmitted with instructions through fluctuation of capacitance or resistance generated by the finger proximity switch, and the chip controls the switch circuit to realize the purpose of opening or closing the electric appliance.

Example five

In order to realize convenient disassembly and maintenance, the steering device is required to be replaced in the daily maintenance process to ensure smooth steering, and referring to fig. 1, 3 and 4, the technical scheme is as follows: the steering recognition device 4 comprises a steering reset piece 41, wherein the top of the steering reset piece 41 is provided with a supporting ring 42, a pipe sleeve base 43 is arranged at the bottom of the supporting ring 42, a Hall sensor 5 is arranged outside the pipe sleeve base 43, the supporting ring 42 and the pipe sleeve base 43 are spliced with each other to form a containing cavity for installing the steering reset piece 41, the steering reset piece 41 is convenient to install through the containing cavity, and the internal steering reset piece 41 can be replaced only by disassembling the supporting ring 42 and the pipe sleeve base 43 in the disassembling and maintaining process, so that the steering reset is smooth.

It should be noted that the bottom of the supporting ring 42 is provided with the first clamping groove 88, one end of the steering reset piece 41 is clamped by the first clamping groove 88, so that a limiting effect is achieved on one end of the steering reset piece 41, a limiting groove 99 and a second clamping groove 100 are respectively formed in the pipe sleeve base 43, the other end of the steering reset piece 41 is clamped with the second clamping groove 100, so that the other end of the steering reset piece 41 is limited, an installation limiting part 101 is further arranged outside the steering reset piece 41, the installation limiting part 101 is matched with the limiting groove 99, the steering reset piece 41 is conveniently installed and limited, and the steering reset piece 41 is conveniently placed and installed.

It should be noted that, through evenly distributed all around the outside of supporting ring 42, and be provided with installation bayonet 430 at the top of pipe box base 43, and set up installation hole 420 and installation bayonet 430 relatively, can install the fixed screw in installation hole 420 and the installation bayonet 430, thereby the top of pipe box base 43 and the bottom looks joint of supporting ring 42 are fixed of being convenient for, and only need unscrew the fixed screw in the dismantlement process can reach the effect of dismantlement pipe box base 43 and supporting ring 42, thereby maintain the maintenance to the steering restoring piece 41 of inside.

Therein, further to the above embodiments, the hall effect sensor, also called hall sensor 5, is a transducer, which converts a changing magnetic field into a change of the output voltage. The hall sensor 5 is firstly used for measuring magnetic fields and can also measure physical quantities which generate and influence magnetic fields, for example for proximity switches, hall, position measurement, rotational speed measurement and current measurement devices; in its simplest form, the sensor acts as an analog transducer, returning a voltage directly. The distance from the hall plate can be set at a known magnetic field. Using multiple sets of sensors, the relative positions of the magnets can be inferred. The current through the conductor produces a magnetic field that varies with the current, and the hall effect sensor can measure the current without disturbing the current, typically constructed as an integral part of the winding core or permanent magnet alongside the conductor being measured.

The aspects of the present application have been described in detail hereinabove with reference to the accompanying drawings. In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments. Those skilled in the art will also appreciate that the acts and modules referred to in the specification are not necessarily required in the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application may be sequentially adjusted, combined and pruned according to actual needs, and the modules in the apparatus of the embodiment of the present application may be combined, divided and pruned according to actual needs.

The embodiments of the present application have been described above, the foregoing description is exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An electric wheelchair grip, comprising:

the rotary handle is hinged to one end of the fixed handle seat, the rotary handle is in rotary fit with the power switch, an inductive switch is arranged inside the power switch, the other end of the fixed handle seat drives the steering recognition device to rotate, a brake handle is further arranged outside the fixed handle seat, a touch switch is arranged inside the brake handle, and the touch switch is abutted to the outer side of the power switch;

2. The electric wheelchair grip according to claim 1, wherein a first clamping groove is formed in the bottom of the supporting ring, the first clamping groove clamps one end of the steering reset piece, a limiting groove and a second clamping groove are formed in the inner portion of the pipe sleeve base, the other end of the steering reset piece is clamped with the second clamping groove, and an installation limiting portion is further arranged on the outer portion of the steering reset piece and is matched with the limiting groove.

3. The electric wheelchair grip of claim 2, wherein the mounting limit portion is disposed in correspondence with the bottom of the magnet.

4. The electric wheelchair grip according to claim 1, wherein two symmetrically arranged grooves are respectively arranged on the outer portion of the supporting circular ring, and the magnetic blocks are arranged in the grooves.

5. The electric wheelchair grip of claim 1, wherein a rotating inner tube is penetrated inside the rotating handle, the power switch is sleeved on the rotating inner tube, and the rotating inner tube extends to one end of the fixed handle seat.

6. The electric wheelchair grip of claim 1, wherein the steering reset member is wound on the other end of the fixed grip base, and both ends of the steering reset member are extended outwards.

7. The electric wheelchair grip according to claim 1, wherein mounting holes are uniformly distributed around the outer portion of the supporting ring, mounting bayonets are provided at the top of the tube sleeve base, the mounting holes are opposite to the mounting bayonets, and the top of the tube sleeve base is engaged with the bottom of the supporting ring.