Walking wheel and moving auxiliary equipment

Abstract

The utility model provides a walking wheel and movement auxiliary equipment, and belongs to the technical field of human body auxiliary equipment. The walking wheel is applied to the mobile auxiliary equipment and comprises a shell connected with a main body of the mobile auxiliary equipment; the power device is used for providing driving force for hubs of the walking wheels so as to drive the hubs to rotate; wherein the power device is arranged in the shell, and the power device is in transmission connection with the hub; the brake piece is connected with the power output part of the power device; the protection device is used for automatically moving from the unlocking position to the braking position when the power device is powered off and is used for braking the braking piece; when the protection device is in the unlocking position, the protection device and the brake piece are in a separated state; and the protection device is connected with the shell. When the power device is powered off, the protection device can brake the brake piece, so that the walking wheel enters a brake state, and the safety of the mobile auxiliary equipment is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of human auxiliary equipment, and particularly relates to a walking wheel and a mobile auxiliary equipment. BACKGROUND

[0002] The mobile auxiliary equipment includes a walking aid, a wheelchair and the like. The mobile auxiliary equipment is a device capable of assisting a user to move, wherein the mobile auxiliary equipment can provide support for a person who cannot walk independently and assist the user to move.

[0003] The existing mobile auxiliary equipment is generally equipped with a power system. The power system drives the walking wheel of the equipment to rotate, so that the equipment can move under the action of no external force, thereby providing convenience for the user. When the power system is powered off due to insufficient power supply or circuit failure and the mobile auxiliary equipment is at a location with a slope, the walking wheel will spontaneously rotate under the action of gravity and is not controlled due to lack of driving force. Once the above situation occurs, it is likely to cause harm to the user or the surrounding people. How to avoid the above situation to improve the safety of the mobile auxiliary equipment is a problem to be solved at present. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to overcome the defects of the prior art and provide a walking wheel and a mobile auxiliary equipment to solve the problems in the prior art.

[0005] To solve the above problems, the first aspect of the embodiments of the present application provides a walking wheel applied to a mobile auxiliary equipment, comprising:

[0006] a shell connected with a main body of the mobile auxiliary equipment;

[0007] a power device for providing driving force to a hub of the walking wheel to drive the hub to rotate; wherein the power device is arranged in the interior of the shell, and the power device is connected with the hub in transmission through a power output part;

[0008] a brake connected with the power output part of the power device;

[0009] a protection device for automatically moving from an unlocking position to a braking position to brake the brake when the power device is powered off; wherein the protection device is in a separated state with the brake when the protection device is in the unlocking position; and the protection device is connected with the shell.

[0010] In a possible implementation, the protection device comprises an electromagnetic valve and a connecting pin; a valve core of the electromagnetic valve is fixedly connected with the connecting pin.

[0011] The connecting pin has the unlocking position and the braking position relative to the brake piece;

[0012] When the power device is powered, the electromagnetic valve is powered, and the spool of the electromagnetic valve is used to keep the connecting pin in the unlocking position;

[0013] When the power device is powered off, the electromagnetic valve is powered off, the spool of the electromagnetic valve is automatically reset, and the connecting pin is moved to the braking position to brake the brake piece.

[0014] In a possible implementation, the brake piece includes a plurality of protrusions, which are sequentially and spacedly distributed along the outer periphery of the brake piece; wherein the protrusions are used to abut against the connecting pin when the connecting pin is in the braking position.

[0015] In a possible implementation, the protrusions are provided with concave arc portions, and the connecting pin is provided with a disc, the radius of the disc corresponding to that of the arc portions; wherein the disc is used to abut against the arc portions to brake the brake piece.

[0016] In a possible implementation, the power device includes a frameless motor, the stator of the frameless motor being fixedly arranged inside the housing, and the rotor of the frameless motor being connected with the hub transmission; wherein the rotor of the frameless motor is the power output part of the power device.

[0017] In a possible implementation, the housing is further provided with a transmission device, and the power device is connected with the hub transmission through the transmission device.

[0018] In a possible implementation, the transmission device includes a planetary reducer.

[0019] In a possible implementation, the housing is externally provided with a driving piece, the driving piece being movably connected with the housing, and the driving piece being fixedly connected with the protection device;

[0020] The driving piece has a first position and a second position relative to the housing; when the protection device is in the braking position, the driving piece is driven to move from the first position to the second position, so that the protection device leaves the braking position.

[0021] In a possible implementation, the housing includes a mounting part, the mounting part being fixedly connected with the main body of the mobile auxiliary device; wherein the mounting part is provided with an auxiliary support wheel.

[0022] The second aspect of the embodiments of the present application provides a mobile assistance device, comprising a main body and the walking wheel as described above, wherein the walking wheel is connected to the main body.

[0023] The mobile assistance device comprises a wheelchair or a walking stick.

[0024] The beneficial effects of the present application include:

[0025] The walking wheel provided by the present application is applied to a mobile assistance device, comprising a shell, a power device, a brake and a protection device. When the mobile assistance device is driven by the power device, the power device provides driving force to the hub of the walking wheel, so that the hub rotates. When the power device is powered off, the protection device automatically moves from the unlocking position to the braking position, thereby braking the brake. Since the brake is connected to the power output part of the power device, and the power device is connected to the transmission through the power output part, when the brake cannot rotate, the hub cannot rotate, thereby realizing the braking of the walking wheel.

[0026] When the power device is powered off, the protection device can brake the brake, thereby making the walking wheel enter the braking state, thereby effectively improving the safety of the mobile assistance device. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0028] Figure 1 A first schematic view of a walking wheel is shown;

[0029] Figure 2 A second schematic view of the walking wheel is shown; Figure 1

[0030] Figure 3 A schematic view of the core components of a walking wheel is shown;

[0031] Figure 4 A second schematic view of the walking wheel is shown; Figure 3

[0032] Figure 5 An exploded schematic view of the walking wheel is shown; Figure 3

[0033] Figure 6 A schematic view of the position relationship between the protection device and the brake is shown;

[0034] Figure 7 ​​​It shows Figure 6 The front view;

[0035] Figure 8 A schematic diagram is shown showing a brake component in a first position relative to a connecting pin;

[0036] Figure 9 A schematic diagram is shown showing a brake component in a second position relative to a connecting pin;

[0037] Figure 10 A cross-sectional view of a power unit and transmission unit assembled together is shown;

[0038] Figure 11 A schematic diagram of a transmission device is shown;

[0039] Figure 12 A schematic diagram of a mobile assistive device is shown.

[0040] Explanation of key component symbols:

[0041] 10-Main body; 11-Bracket; 20-Walking wheel; 100-Housing; 110-Main housing; 120-End cover; 121-Through hole; 130-Mounting part; 131-Auxiliary support wheel; 200-Power unit; 210-Rotor; 220-Stator; 300-Hub; 400-Brake component; 410-Protruding tooth; 411-Arc portion; 500-Protective device; 510-Solenoid valve; 520-Connecting pin; 521-Disc; 600-Circuit board module; 610-Protective cover; 700-Transmission device; 710-Sun gear; 720-Planet gear; 730-Planet carrier; 740-Gear ring; 800-Drive component. Detailed Implementation

[0042] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0043] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] Example

[0045] In this embodiment, a walking wheel 20 is proposed for use in a mobile auxiliary device.

[0046] See Figures 1-5 The walking wheels 20 include:

[0047] The housing 100 is connected to the main body 10 of the mobile auxiliary device; wherein the housing 100 and the main body 10 can be fixedly connected by means of screws or the like.

[0048] The power unit 200 is used to provide driving force to the hub 300 of the traveling wheel to drive the hub 300 to rotate; wherein, the power unit 200 is disposed inside the housing 100, and the power unit 200 is connected to the hub 300 via a power output part; the hub 300 is rotatable relative to the housing 100.

[0049] Brake component 400 is connected to the power output section of power unit 200; wherein, brake component 400 is disposed inside housing 100; brake component 400 and power output section of power unit 200 may be directly connected or indirectly connected.

[0050] The protection device 500 is used to automatically move from the unlocked position to the braking position when the power device 200 is de-energized, so as to brake the brake component 400; wherein, when the protection device 500 is in the unlocked position, the protection device 500 and the brake component 400 are in a separated state; the protection device 500 is connected to the housing 100.

[0051] In this embodiment, the housing 100 includes a main housing 110 and an end cap 120, which are detachably connected. The end cap 120 and the main housing 110 can be connected by screws or other means. The main housing 110 has a hollow structure inside, which can accommodate the power unit 200 and the brake component 400, etc.

[0052] After the power unit 200 and brake components 400 and other related components are installed inside the main housing 110, the end cap 120 is placed over the opening of the main housing 110, thereby sealing the internal space of the main housing 110 and protecting the components installed inside the main housing 110.

[0053] The walking wheels also include a circuit board module 600, in which the power unit 200, protection device 500, and power supply for the mobility assistance equipment are all electrically connected. The circuit board module 600 can distribute electrical energy and monitor the power supply. The circuit board module 600 can be fixedly mounted on the outer surface of the end cover 120, and a protective cover 610 can be provided on the outside of the circuit board module 600, with the protective cover 610 fixedly connected to the end cover 120.

[0054] In this embodiment, the main shell 110, end cover 120, power unit 200, brake 400, protection device 500, transmission device 700 and circuit board module 600 together constitute the core components of the walking wheel.

[0055] When the mobile auxiliary equipment is driven by the power unit 200, the power unit 200 provides driving force to the wheel hub 300 of the traveling wheel, thereby causing the wheel hub 300 to rotate. When the power unit 200 is de-energized, the protection device 500 automatically moves from the unlocked position to the braking position, thereby braking the brake component 400. Since the brake component 400 is connected to the wheel hub 300 or the power output section of the power unit 200, when the brake component 400 cannot rotate, the wheel hub 300 also cannot rotate, thus achieving braking of the traveling wheel.

[0056] like Figure 6 and Figure 7 As shown, in this embodiment, the protection device 500 includes a solenoid valve 510 and a connecting pin 520. The solenoid valve 510 can be connected in series with the power device 200.

[0057] The valve core of solenoid valve 510 is fixedly connected to connecting pin 520. Solenoid valve 510 is connected to housing 100. Figure 6 and Figure 7 In this configuration, the protection device 500 is in the unlocked position relative to the brake component 400, that is, the connecting pin 520 is separated from the brake component 400. At this time, the brake component 400 can rotate freely without being restricted by the connecting pin 520.

[0058] like Figure 5 As shown, the end cap 120 has a through hole 121. The solenoid valve 510 is located outside the housing 100, and the valve core of the solenoid valve 510 is fixedly connected to the connecting pin 520 through the through hole 121. The connecting pin 520 is partially located inside the through hole 121, and the connecting pin 520 and the through hole 121 are slidably connected.

[0059] Connecting pin 520 has an unlocking position and a braking position relative to brake component 400:

[0060] When the power unit 200 is energized, the solenoid valve 510 is energized, and the valve core of the solenoid valve 510 is used to keep the connecting pin 520 in the unlocked position.

[0061] When the power unit 200 is de-energized, the solenoid valve 510 loses power, the valve core of the solenoid valve 510 automatically resets, and drives the connecting pin 520 to move to the braking position to brake the brake component 400.

[0062] The solenoid valve 510 has a built-in return spring. When the solenoid valve 510 is energized, the valve core moves to its working position under the action of the magnetic field, causing the return spring to deform. When the solenoid valve 510 is de-energized, the magnetic field disappears, and the valve core automatically returns to its original position under the action of the return spring. The specific structure of the solenoid valve 510 can be found in existing technology and will not be described in detail here.

[0063] The solenoid valve 510 is small in size, easy to install, and can effectively reduce the total weight of the traveling wheels; the solenoid valve 510 is highly sensitive and easy to control; the solenoid valve 510 can automatically reset in the event of power failure, and when the equipment power is insufficient (including zero power), the solenoid valve 510 can brake the traveling wheels, which has very high reliability.

[0064] like Figure 8 and Figure 9 As shown, the brake component 400 includes a plurality of protruding teeth 410, which are distributed sequentially at intervals along the outer periphery of the brake component 400. Specifically, the protruding teeth 410 may be arranged in a ring array about the central axis of the brake component 400.

[0065] exist Figure 8 In the first position, the brake component 400 is positioned relative to the connecting pin 520, at which point the disc 521 is directly opposite the gap between the two protruding teeth 410; Figure 9 In the middle, the brake component 400 is in a second position relative to the connecting pin 520, at which time the disc 521 is directly opposite a tooth 410.

[0066] The tooth 410 is used to abut against the connecting pin 520 when the connecting pin 520 is in the braking position.

[0067] The tooth 410 has a concave arcuate portion 411, and the connecting pin 520 has a disc 521. The radii of the disc 521 and the arcuate portion 411 correspond to each other; specifically, the radii of the disc 521 and the arcuate portion 411 are the same or equivalent. The disc 521 is used to abut against the arcuate portion 411, and the disc 521 is embedded in the arcuate portion 411 to brake the brake component 400.

[0068] Each tooth 410 has two symmetrically arranged arc portions 411. Therefore, when the connecting pin 520 is in the braking position, regardless of whether the brake component 400 rotates counterclockwise or clockwise, the disc 521 of the connecting pin 520 can always abut against one arc portion 411 on one tooth 410, thereby achieving braking.

[0069] Reference Figure 8 In one scenario, when the power unit 200 is de-energized, the solenoid valve 510 loses power, and the valve core of the solenoid valve 510 drives the connecting pin 520 to move toward the braking position. At this time, the disc 521 of the connecting pin 520 is aligned with the gap between the two protruding teeth 410 (i.e., the brake component 400 is in the first position relative to the connecting pin 520), so the connecting pin 520 will move directly to the braking position. Subsequently, when the brake component 400 continues to rotate a certain angle with the wheel hub 300, the disc 521 of the connecting pin 520 will abut against an arc portion 411 on one of the protruding teeth 410, thereby achieving braking of the brake component 400.

[0070] Reference Figure 9 In another scenario, when the power unit 200 is de-energized, the solenoid valve 510 loses power. The valve core of the solenoid valve 510 drives the connecting pin 520 to move towards the braking position. At this time, the disc 521 of the connecting pin 520 is directly opposite a tooth 410 (i.e., the brake component 400 is in a second position relative to the connecting pin 520). Because the disc 521 is obstructed by the tooth 410, the connecting pin 520 cannot move to the braking position. As the wheel hub 300 continues to rotate, the brake component 400 will also... The rotation of the wheel hub 300 causes the gap between the teeth 410 to be opposite to the disc 521 (i.e., the brake 400 is in the first position relative to the connecting pin 520). At this time, since there is no obstruction from the teeth 410, the connecting pin 520 will move to the braking position. Subsequently, when the brake 400 continues to rotate with the wheel hub 300 at a certain angle, the disc 521 of the connecting pin 520 will abut against an arc portion 411 on a tooth 410, thereby achieving braking of the brake 400.

[0071] The power unit 200 includes a frameless motor. The stator 220 of the frameless motor is fixedly disposed inside the housing 100. The rotor 210 of the frameless motor is rotatable relative to the housing 100 and is connected to the hub 300 for transmission. The rotor 210 of the frameless motor is the power output part of the power unit 200.

[0072] In this embodiment, the brake component 400 is fixedly connected to the rotor 210 of the frameless motor, for example, by means of screws. Since both the brake component 400 and the frameless motor are installed inside the housing 100, connecting them is more convenient and allows for a more compact overall structure of the traveling wheel. Because the rotor 210 is drivenly connected to the hub 300, when the rotor 210 cannot rotate relative to the housing 100, the hub 300 is also restricted and cannot rotate. The connecting pin 520 is connected to the housing 100. Thus, when the connecting pin 520 is in the braking position and abuts against the brake component 400, the brake component 400 cannot rotate relative to the housing 100 due to the restriction of the connecting pin 520. Since the housing 100 is fixedly connected to the main body 10 of the mobile auxiliary equipment, the brake component 400 also cannot rotate relative to the main body 10, thereby achieving the purpose of braking.

[0073] The housing 100 is also equipped with a transmission device 700, and the power device 200 is connected to the hub 300 through the transmission device 700.

[0074] The transmission device 700 includes a planetary reducer.

[0075] like Figure 10 and Figure 11 As shown, the planetary reducer includes a sun gear 710, planet gears 720, a planet carrier 730, and a ring gear 740. Multiple planet gears 720 are rotatably mounted on the planet carrier 730. Both the sun gear 710 and the planet gears 720 are located inside the ring gear 740, and both mesh with the planet gears 720. It should be noted that... Figure 11 The planetary reducer shown in the figure is a simplified structural diagram. The relevant components in the figure are represented by simple lines. The part of the planet carrier 730 that is covered by the planet gears 720 is represented by dashed lines.

[0076] The rotor 210 of the frameless motor is connected to the sun gear 710 for synchronous rotation. The planet carrier 730 and the hub 300 can be fixedly connected by screws or other means. The gear ring 740 can be fixed inside the housing 100 by screws or other means.

[0077] The rotor 210 and the sun gear 710 are coaxially arranged. When the frameless motor starts, the rotor 210 drives the sun gear 710 to rotate synchronously, which, through the transmission of the planet gears 720, drives the planet carrier 730 to rotate. Since the planet carrier 730 is fixedly connected to the hub 300, when the planet carrier 730 rotates, the hub 300 rotates synchronously as well.

[0078] The specific structure of the planetary reducer can be referred to the existing design, and will not be described in detail here.

[0079] In other embodiments, the transmission device 700 may also employ a gear reducer or a worm gear reducer, etc.

[0080] like Figure 2 As shown, in this embodiment, a driving member 800 is provided on the outside of the housing 100. The driving member 800 is movably connected to the housing 100 and fixedly connected to the protective device 500. The driving member 800 can be driven by hand or foot, rather than by electrical power. The driving member 800 and the housing 100 can be threaded or slidably connected.

[0081] The drive member 800 has a first position and a second position relative to the housing 100: when the protection device 500 is in the braking position, the drive member 800 is driven to move from the first position to the second position so that the protection device 500 leaves the braking position.

[0082] When the power of the mobile auxiliary equipment is low, the protection device 500 automatically moves from the unlocked position to the braking position, braking the wheels. Because the wheels are braked by the protection device 500, they cannot rotate, which may obstruct the passage and cause congestion. In this situation, personnel can use their hands or feet to move the drive unit 800 from the first position to the second position, causing the protection device 500 to disengage from the braking position, thus unlocking the brake unit 400. Once the wheels are released from braking, the mobile auxiliary equipment can be pushed or pulled to move it to a suitable location. After the mobile auxiliary equipment has moved to the appropriate location, the drive unit 800 can be moved back from the second position to the first position, thus restoring the protection device 500 to the braking position.

[0083] In this embodiment, the housing 100 further includes a mounting portion 130, which is fixedly connected to the main body 10 of the mobile auxiliary device. The mounting portion 130 is provided with auxiliary support wheels 131.

[0084] The mounting part 130 can be fixedly connected to the end cover 120 by means of screws or the like, and the mounting part 130 can also be fixedly connected to the bracket 11 of the main body 10 by means of screws or the like. Furthermore, the solenoid valve 510 is slidably connected to the mounting part 130, and the drive component 800 is movably disposed on the mounting part 130.

[0085] like Figure 12 As shown, in this embodiment, a mobility assistance device is also proposed, including a main body 10 and the aforementioned walking wheels 20, which are connected to the main body 10. The mobility assistance device includes a wheelchair or a walking aid.

[0086] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0087] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A type of walking wheel, used in mobile auxiliary equipment, characterized in that, include: The housing is connected to the main body of the mobile auxiliary device; A power unit is provided to drive the hub of the traveling wheel to rotate the hub; wherein the power unit is disposed inside the housing and is connected to the hub via a power output unit. The braking component is connected to the power output section of the power unit. A protective device is used to automatically move from the unlocked position to the braking position when the power device is de-energized, so as to brake the brake component; wherein, when the protective device is in the unlocked position, the protective device is separated from the brake component; the protective device is connected to the housing.

2. The walking wheel according to claim 1, characterized in that, The protection device includes a solenoid valve and a connecting pin; the valve core of the solenoid valve is fixedly connected to the connecting pin. The connecting pin has the unlocking position and the braking position relative to the braking component: When the power unit is energized, the solenoid valve is energized, and the valve core of the solenoid valve is used to keep the connecting pin in the unlocked position; When the power device is de-energized, the solenoid valve loses power, the valve core of the solenoid valve automatically resets, and drives the connecting pin to move to the braking position to brake the brake component.

3. The walking wheel according to claim 2, characterized in that, The brake component includes a plurality of protruding teeth, which are distributed sequentially at intervals along the outer periphery of the brake component; wherein, the protruding teeth are used to abut against the connecting pin when the connecting pin is in the braking position.

4. The walking wheel according to claim 3, characterized in that, The protruding tooth has a concave arc portion, and the connecting pin has a disc, the radii of which correspond to those of the arc portion; wherein, the disc is used to abut against the arc portion to brake the brake component.

5. The walking wheel according to claim 1, characterized in that, The power unit includes a frameless motor, the stator of which is fixedly disposed inside the housing, and the rotor of which is connected to the hub drive; wherein, the rotor of the frameless motor is the power output part of the power unit.

6. The walking wheel according to claim 1, characterized in that, The housing is also equipped with a transmission device, and the power unit is connected to the wheel hub via the transmission device.

7. The walking wheel according to claim 6, characterized in that, The transmission device includes a planetary reducer.

8. The walking wheel according to claim 1, characterized in that, A driving component is provided on the outside of the housing. The driving component is movably connected to the housing and fixedly connected to the protective device. The drive member has a first position and a second position relative to the housing; when the protection device is in the braking position, the drive member is driven to move from the first position to the second position so that the protection device leaves the braking position.

9. The walking wheel according to claim 1, characterized in that, The housing includes a mounting section, which is fixedly connected to the main body of the mobile auxiliary device; wherein, the mounting section is provided with auxiliary support wheels.

10. A mobile assistive device, characterized in that, It includes a main body and a traveling wheel as described in any one of claims 1-8, wherein the traveling wheel is connected to the main body; The mobility assistance devices include wheelchairs or walking aids.

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