Driving device and wheelchair

Abstract

The utility model discloses a driving device and a wheelchair, and belongs to the technical field of power equipment, the driving device comprises a motor with a casing, a mounting seat mounted on the casing, and a driver. The casing is provided with a casing cavity and a wiring groove; the wiring groove is provided with a wiring port and an installation port, the wiring port is communicated with the machine cavity, the installation port is communicated with the outside of the machine shell, the installation base covers the installation port, the installation base and the inner wall of the wiring groove jointly define a wiring cavity, and the driver is provided with a circuit board assembly installed on the installation base. The circuit board assembly is located in the wiring cavity and electrically connected with the motor. According to the driving device, the complexity of wiring and assembling can be reduced, and the installation efficiency of the driving device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment, in particular to a driving device and a wheelchair. Background Art

[0002] A driving device refers to a device that uses driving force or energy to transfer power to various equipment, so as to help the equipment realize functions such as movement and rotation. Common types of driving devices include motors, hydraulic drives, pneumatic drives, etc. The motor of the driving device generally needs to be used in cooperation with a driver to control the rotation and torque of the motor by the driver. At present, when installing the driving device, the motor and the driver are installed separately, and they are connected by various communication cables. The routing of the communication cables is complex, resulting in time-consuming and laborious arrangement of the communication cables during the installation of the driving device. The installation process is complex, and the complex routing and exposed routing also increase the probability of failure. At the same time, when the driving device is installed on the equipment to be driven, such as when installed on a wheelchair, a wiring structure needs to be set on the wheelchair, and the installation is complex and the installation efficiency is low. Summary of the Utility Model

[0003] An object of an embodiment of the utility model is to provide a driving device, which can reduce the difficulty of routing and the complexity of installation, improve the installation efficiency of the driving device, and reduce the probability of failure.

[0004] Another object of an embodiment of the utility model is to provide a wheelchair, which can reduce the complexity of installation and improve the installation efficiency by using the above driving device.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] On the one hand, a driving device is provided, including:

[0007] A motor, having a housing; the housing has a machine cavity and a wiring groove; the wiring groove has a wiring port and an installation port, the wiring port is communicated with the machine cavity, and the installation port is communicated with the outside of the housing;

[0008] A mounting seat, mounted on the housing; the mounting seat covers the installation port and jointly encloses a wiring cavity with the inner wall of the wiring groove;

[0009] And

[0010] A driver, having a circuit board assembly mounted on the mounting seat;

[0011] The circuit board assembly is located in the wiring cavity and is electrically connected to the motor.

[0012] Optionally, the mounting seat includes a first housing and a second housing; the first housing and the second housing are detachably connected and jointly enclose a receiving groove, the circuit board assembly is installed in the receiving groove, the second housing is provided with a wiring hole, the second housing is installed on the machine housing and covers the installation opening, the receiving groove is communicated with the wiring groove through the wiring hole, and the inner walls of the receiving groove and the wiring groove jointly enclose the wiring cavity, which facilitates the installation and wiring of the circuit board assembly.

[0013] Optionally, the circuit board assembly has a communication connector; the circuit board assembly is installed on the second housing and the communication connector is located at the wiring port, which facilitates wiring with the motor.

[0014] Optionally, the second housing is further provided with a clamping groove, the wiring hole is opened on the inner wall of the clamping groove, and the edge of the installation opening is clamped in the clamping groove, which facilitates positioning when the mounting seat is installed on the machine housing.

[0015] Optionally, the driving device further includes a first threaded fastener; the first housing is connected to the second housing through the first threaded fastener to realize the detachable connection between the first housing and the second housing.

[0016] Optionally, the driving device further includes a sealing ring; the sealing ring is clamped between the second housing and the machine housing and extends along the edge of the installation opening to improve the sealing effect.

[0017] Optionally, the driving device further includes a second threaded fastener; the first housing, the second housing, and the machine housing are sequentially connected through the second threaded fastener, there are multiple second threaded fasteners, and the sealing ring and the installation opening are located in the area jointly enclosed by the multiple second threaded fasteners, which realizes the detachable installation of the mounting seat on the machine housing and further improves the sealing effect.

[0018] Optionally, a radiator is installed on the mounting seat to achieve heat dissipation.

[0019] Optionally, a wire outlet hole is opened on the mounting seat, the driver further has a lead wire, one end of the lead wire is located outside the wiring cavity, and the other end of the lead wire passes through the wire outlet hole and is electrically connected to the circuit board assembly, which facilitates connection with external power sources, batteries and other components.

[0020] Optionally, the drive device further includes a speed reducer having an output transmission shaft and an input transmission shaft; the motor includes a stator assembly, a rotor assembly adapted to the stator assembly, and a drive shaft connected to the rotor assembly; the stator assembly, the rotor assembly, and the drive shaft are all installed in the machine cavity, the input transmission shaft is in transmission connection with the drive shaft, and the output transmission shaft is on the same straight line as the drive shaft to achieve the decelerated output of the drive device.

[0021] Optionally, the drive device further includes a brake; the speed reducer and the brake are arranged at two axial ends of the drive shaft, and the driver is arranged on the side of the machine shell to achieve the braking of the drive device.

[0022] Optionally, the machine shell includes a main shell, a front end cover, and a rear end cover; the brake includes a brake shell and a braking member; the braking member is located inside the brake shell, the speed reducer includes a reduction shell, bearings installed inside the reduction shell, a gear rack installed on the bearings, a gear set installed on the gear rack, and an output flange connected to the gear rack; the input transmission shaft is connected to the output transmission shaft through the gear set;

[0023] The gear set is installed inside the reduction shell, and the brake shell, the rear end cover, the main shell, the front end cover, and the reduction shell are connected in sequence to install the speed reducer and the brake on the motor.

[0024] On the other hand, a wheelchair is provided, including the above drive device.

[0025] The beneficial effects of the present utility model are as follows:

[0026] The drive device of the present utility model can first install the driver on the mounting seat, and use the mounting seat to install the driver on the machine shell of the motor, so that the motor and the driver are integrated. The wiring of the driver and the motor can be carried out in the wiring groove, reducing the difficulty of wiring and the complexity of assembly. After the driver is produced, it can be pre-installed on the mounting seat, and when used in cooperation with the motor, it can be directly installed on the machine shell of the motor and wired. Finally, the drive device as a whole is installed on the device to be driven, improving the installation efficiency of the drive device, reducing the wiring complexity of the device, avoiding the exposure of the communication cable between the motor and the driver, and reducing the failure probability.

[0027] The wheelchair of the present utility model adopts the above drive device, and by using the above drive device, the complexity of installing the drive device on the wheelchair body can be reduced, and the assembly efficiency of the drive device and the wheelchair body can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present utility model will be further described in detail below with reference to the drawings and embodiments.

[0029] Figure 1 is a schematic structural diagram of a driving device;

[0030] Figure 2 is a schematic structural diagram of a motor, a speed reducer, and a brake;

[0031] Figure 3 is Figure 2 side view of;

[0032] Figure 4 is Figure 2 sectional view of;

[0033] Figure 5 is a schematic structural diagram of a driver and a mounting base;

[0034] Figure 6 is Figure 5 sectional view of.

[0035] Explanation of reference numerals in the drawings: In the figure:

[0036] 11, motor; 12, mounting base; 13, driver; 14, first threaded fastener; 15, second threaded fastener; 16, radiator; 17, speed reducer; 18, brake; 19, third threaded fastener;

[0037] 1101, housing; 1102, machine cavity; 1103, wiring groove; 1104, mounting opening; 1105, drive shaft; 1106, main housing; 1107, front end cover; 1108, rear end cover; 1109, wiring platform; 1110, connecting platform; 1111, second connecting hole;

[0038] 111, first housing; 112, second housing; 113, accommodating groove; 114, wiring hole; 115, clamping groove; 116, wire outlet hole; 117, avoidance groove; 118, wire plug;

[0039] 121, circuit board assembly; 122, communication joint; 123, lead wire;

[0040] 171, output transmission shaft; 172, bearing; 173, gear rack; 174, gear set; 175, output flange; 176, speed reduction housing;

[0041] 181, brake housing. Detailed implementation manner

[0042] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present utility model clearer, the technical solutions of the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0043] In the description of the present utility model, unless otherwise clearly defined and limited, terms such as "connected", "fixed", "connected", "communicated", "abutted", "clamped", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0044] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0045] In the description herein, it should be understood that the orientation or positional relationships such as "above", "below", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0046] In the description of this specification, the description referring to terms such as "one embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0047] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0048] Unless otherwise specified or defined, the term "and / or" used in the present utility model includes any and all combinations of one or more related listed items.

[0049] For the convenience of narration, unless otherwise stated, the up-down direction mentioned below is consistent with the up-down direction of itself, and the front-back direction mentioned below is consistent with the right-left direction of itself. Figure 4 Figure 4 itself, and the front-back direction mentioned below is consistent with the right-left direction of itself.

[0050] In the related art, an electric drive device mainly includes a motor and a driver. When the drive device is installed, for example, when assembled on an electric wheelchair, generally the motor needs to be installed on the frame of the wheelchair body, the wheels of the wheelchair body are connected to the drive shaft of the motor, and the driver is installed on the frame of the wheelchair body as an independent component, such as the backrest or the bottom of the seat of the frame. Then the motor and the driver are wired, and the battery of the electric wheelchair and the control joystick of the electric wheelchair are respectively wired to the driver of the drive device. Currently, a drive device is configured for each of the left and right wheels on the frame. When wiring, communication cables are used to connect the motor, the driver, the battery, and the control joystick together. Since the motor has different communication cables such as three-phase lines and signal lines, and the driver has different communication cables such as power lines and communication lines, the routing and wiring are complex, and it takes time and effort to organize the communication cables. The installation process of the drive device is complex and the installation efficiency is low. At the same time, in order to position different communication cables, various structures have to be set on the electric wheelchair to guide and organize the communication cables, which not only increases the cost, but also takes time and effort.

[0051] To solve the problems in the above-mentioned related art, the present application provides a drive device. The communication cable between the motor and the driver of the drive device can be laid in a wiring groove. After the communication cable is laid and the motor and the driver are connected, the driver can be installed on the motor, so that the motor and the driver are assembled into a whole drive device. The whole drive device can be pre-assembled. When it needs to be installed on equipment that needs to be driven, such as an electric wheelchair, the motor and the driver do not need to be installed separately, and the drive device can be quickly installed as a whole module. The electric wheelchair does not need to set various structures to guide and organize the lead wires, avoiding the time-consuming and laborious work of organizing the communication cable between the motor and the driver during the installation of the drive device.

[0052] Such as Figures 1 to 6As shown in the figure, the drive device provided by the present application includes a motor 11, a mounting base 12, and a driver 13. The motor 11 has a housing 1101, the housing 1101 has a housing cavity 1102 and a wiring groove 1103, and the wiring groove 1103 has a wiring port and a mounting port 1104. Specifically, a wiring platform 1109 is formed by upward protrusion on the upper side of the housing 1101, and the wiring platform 1109 is integrally formed with the housing 1101. The wiring groove 1103 can be used for the routing and wiring of communication cables and can also store communication cables. The wiring groove 1103 is opened on the wiring platform 1109, the mounting port 1104 is located on the upper end surface of the wiring platform 1109, and the wiring port is located at the connection between the wiring platform 1109 and the housing 1101. The wiring port is communicated with the housing cavity 1102, and the mounting port 1104 is communicated with the outside of the housing 1101. The mounting base 12 is mounted on the housing 1101. The mounting base 12 covers the mounting port 1104 and jointly encloses a wiring cavity with the inner wall of the wiring groove 1103. The driver 13 has a circuit board assembly 121 mounted on the mounting base 12. After the mounting base 12 is mounted on the housing 1101, the circuit board assembly 121 of the driver 13 is located in the wiring cavity and is electrically connected to the motor 11.

[0053] During the assembly of the present application, the driver 13 can be first mounted on the mounting base 12, and then the motor 11 and the driver 13 on the mounting base 12 are electrically connected by using a communication cable. Finally, the mounting base 12 is mounted on the housing 1101 of the motor 11 to form a wiring cavity and make the driver 13 located in the wiring cavity. The wiring cavity formed by mounting the mounting base 12 on the housing 1101 of the motor 11 can seal the driver 13. At present, the environments of the production workshops of the driver 13 and the motor 11 are very different. Generally speaking, the environmental requirements of the production workshop of the driver 13 are relatively high and need to be carried out in a dust-free environment, while there may be more dust in the production workshop of the motor 11. Compared with the method of first transporting the driver 13 and the mounting base 12 to the production workshop of the motor 11, then mounting the driver 13 in the wiring groove 1103 and wiring, and finally mounting the mounting base 12 on the housing 1101 to seal the driver 13, the present application can pre-mount the driver 13 on the mounting base 12 and then integrally mount the driver 13 and the mounting base 12 on the housing 1101, which not only has higher installation efficiency but also can reduce the risk of dust entering the wiring groove 1103 and the housing cavity 1102. In addition, by pre-mounting the driver 13 on the mounting base 12, during maintenance and replacement, the driver 13 can be disassembled by removing the mounting base 12, improving the efficiency of maintenance and replacement.

[0054] In this way, the wiring of the driver 13 and the motor 11 can be carried out in the wiring groove 1103, which reduces the difficulty of wiring and the complexity of assembly, facilitates wire management. After production, the driver 13 can be pre-installed on the mounting seat 12. When used in cooperation with the motor 11, it can be directly installed on the housing 1101 of the motor 11 and wired. Finally, the entire driving device is installed on the device to be driven, improving the installation efficiency of the driving device, reducing the wiring complexity of the device, avoiding the exposure of the communication cable between the motor 11 and the driver 13, and reducing the failure probability.

[0055] In other words, in this application, the driver 13 and the motor 11 are pre-installed to form a module, which can improve the assembly efficiency of electric devices using the motor 11 as a power source and reduce the wiring complexity. Exemplarily, taking an electric wheelchair as an example, the motor 11 is used to supply power to the wheels of the wheelchair to drive the wheelchair to move. Based on the power device of this application, when assembling the electric wheelchair, it is not necessary to install the motor 11 and the driver 13 at different parts of the electric wheelchair frame respectively. Only the mounting part on the driving device needs to be installed on the frame, improving the installation efficiency. Moreover, many wires such as the three-phase wires and signal wires of the motor 11, and the power wires and communication wires of the driver 13 can be basically routed inside the driving device, without designing wire management grooves and wire management blocks on the electric wheelchair frame. There will be no complex wiring of multiple wires at the bottom of the frame, making the assembly of the electric wheelchair more convenient, with good wire combing effect and reducing the equipment failure probability.

[0056] In one embodiment, the mounting seat 12 includes a first housing 111 and a second housing 112. The first housing 111 and the second housing 112 are detachably connected and jointly enclose a receiving groove 113. The circuit board assembly 121 is installed on the inner wall of the receiving groove 113 by screws. Specifically, first separate the first housing 111 and the second housing 112, then install the circuit board assembly 121 on the first housing 111 or the second housing 112, and then connect the first housing 111 and the second housing 112 to form the receiving groove 113 to protect the circuit board assembly 121. The second housing 112 is provided with a wiring hole 114 to facilitate the installation and wiring of the circuit board assembly 121. The second housing 112 is installed on the housing 1101 and covers the installation opening 1104 to seal the installation opening 1104. The wiring hole 114 is located above the area enclosed by the installation opening 1104. The installation opening 1104 is communicated with the receiving groove 113 through the wiring hole 114, and the receiving groove 113 is communicated with the wiring groove 1103 through the wiring hole 114. The inner walls of the receiving groove 113 and the wiring groove 1103 jointly enclose a wiring cavity. One end of the communication cable is electrically connected to the circuit board assembly 121, and the other end of the communication cable passes through the installation opening 1104, the wiring groove 1103, and the wiring port and extends into the machine cavity 1102 for electrical connection with the motor 11.

[0057] Optionally, the circuit board assembly 121 has a communication connector 122. The communication connector 122 is electrically connected to the circuit board body of the circuit board assembly 121. The circuit board assembly 121 is installed in the second housing 112 and the communication connector 122 is located at the wiring port. The communication connector 122 includes components such as wiring terminals, USB interfaces, and connectors. The communication cable includes a signal transmission cable, a power supply cable, etc. The communication connector 122 that needs to be electrically connected to the three-phase line and signal line of the motor 11 is arranged at the wiring hole 114 and is electrically connected to the circuit board body of the circuit board assembly 121. The communication cable led out from the motor 11 is directly inserted into the communication connector 122, which is convenient for connection.

[0058] Furthermore, the second housing 112 is also provided with a clamping groove 115. The wiring hole 114 is opened on the inner wall of the clamping groove 115. The edge of the mounting opening 1104 is clamped in the clamping groove 115. Specifically, the wiring table 1109 is clamped in the clamping groove 115. The redundant communication cables led out from the motor 11 can be stored in the wiring groove 1103 and the clamping groove 115, which is convenient for positioning when the mounting seat 12 is installed on the housing 1101.

[0059] Optionally, an avoidance groove 117 is also opened on the second housing 112. The avoidance groove 117 is used to avoid the connecting platforms 1110 on the housing 1101, the reduction housing 176, and the brake housing 181. The connecting platforms 1110 on the housing 1101, the reduction housing 176, and the brake housing 181 are used to install threaded fasteners.

[0060] In one embodiment, the driving device further includes a first threaded fastener 14. The first housing 111 is connected to the second housing 112 through the first threaded fastener 14. There are multiple first threaded fasteners 14. First connection holes are provided on both the first housing 111 and the second housing 112. The first threaded fastener 14 passes through the first connection holes on the first housing 111 and the second housing 112 to achieve the detachable connection between the first housing 111 and the second housing 112. The first connection hole can be a threaded hole or a clearance hole. When the first connection hole is a clearance hole, a nut is installed on the first threaded fastener 14.

[0061] Furthermore, the driving device further includes a sealing ring. The sealing ring is clamped between the second housing 112 and the housing 1101 and extends along the edge of the mounting opening 1104. The sealing ring is laid along the edge of the mounting opening 1104 on the wiring table 1109 to achieve the sealing of the gap between the second housing 112 and the housing 1101.

[0062] Furthermore, the driving device further includes a second threaded fastener 15. The first housing 111, the second housing 112, and the chassis 1101 are sequentially connected by the second threaded fastener 15. There are multiple second threaded fasteners 15, and the sealing ring and the mounting opening 1104 are located in the area enclosed by the multiple second threaded fasteners 15. The wiring platform 1109 is provided with second connection holes 1111. The second connection holes 1111 are threaded holes. There are multiple second connection holes 1111 and they correspond to the multiple second threaded fasteners 15 one by one. The second threaded fastener 15 passes through the first housing 111 and the second housing 112 and is threadedly connected to the wiring platform 1109 on the chassis 1101. The multiple second threaded fasteners are located outside the sealing ring. Compared with the arrangement where the multiple second threaded fasteners are located in the area enclosed by the sealing ring, the sealing ring is located inside the multiple second threaded fasteners, and the sealing performance is better.

[0063] Optionally, a radiator 16 is installed on the mounting base 12. The radiator 16 is arranged outside the first housing 111. After the heat generated by the driver 13 is transferred to the first housing 111 through heat conduction, the radiator 16 is used for heat dissipation. At the same time, the heat generated by the motor 11 can also be transferred to the radiator 16 through the second housing 112 and the first housing 111, and the radiator 16 is used for heat dissipation.

[0064] In one embodiment, a wire outlet hole 116 is formed in the mounting base 12. The driver 13 further has a lead wire 123. One end of the lead wire 123 is located outside the wiring cavity, and the other end of the lead wire 123 passes through the wire outlet hole 116 and is electrically connected to the circuit board assembly 121. Since multiple wires are required when the driving device is installed on the device to be driven, for example, when installed on an electric wheelchair, there are communication cables between the driver 13 and the control joystick and between the driver 13 and the battery. If these communication cables are respectively led out through different wires, it will take time and effort to arrange the wires during assembly. In this application, a lead wire 123 is provided. Both between the driver 13 and the control joystick and between the driver 13 and the battery are electrically connected to the circuit board assembly 121 through the lead wire 123. The lead wire 123 is connected to a plug, and the driving device only needs one plug to complete the overall electrical connection with the electric wheelchair.

[0065] Optionally, a wire plug 118 is provided at the wire outlet hole 116 to play a role in dust prevention.

[0066] In one embodiment, the driving device further includes a speed reducer 17 having an output transmission shaft 171 and an input transmission shaft. The motor 11 includes a stator assembly, a rotor assembly adapted to the stator assembly, and a driving shaft 1105 connected to the rotor assembly. The stator assembly, the rotor assembly, and the driving shaft 1105 are all installed in the machine cavity 1102. The input transmission shaft is in transmission connection with the driving shaft 1105. The rotation axis of the output transmission shaft 171 and the rotation axis of the driving shaft 1105 are on the same straight line. The output transmission shaft 171 and the driving shaft 1105 are collinear rather than parallel. The motor 11 and the speed reducer 17 rotate coaxially. Compared with the non-coaxial rotation of the traditional planetary gear speed reducer 17, the driving device of the present application has a smaller volume, a larger torque, and a simpler assembly.

[0067] Furthermore, the driving device further includes a brake 18 having a braking member. The brake 18 is also called a brake and can achieve the braking of the driving shaft 1105. The driving shaft 1105 of the motor 11 is located on the moving path of the braking member of the brake 18. The speed reducer 17 and the brake 18 are arranged at both axial ends of the driving shaft 1105. The driver 13 is arranged on the side of the machine shell 1101. The machine shell 1101 is cylindrical. The speed reducer 17 and the brake 18 are respectively arranged on the end faces at both ends of the machine shell 1101. The driver 13 is located in the radial direction of the driving shaft 1105 and is arranged on the outer circumferential side surface of the machine shell 1101. The speed reducer 17 and the brake 18 are respectively installed at both axial ends of the driving shaft 1105. Specifically, the speed reducer 17 is located at the front end of the driving shaft 1105, and the brake 18 is located at the rear end of the driving shaft 1105.

[0068] It can be understood that the brake 18 can be a friction brake and a non-friction brake. The friction brake realizes the braking of the driving shaft 1105 by the frictional force between the braking member and the driving shaft 1105. The non-friction brakes mainly include magnetic powder brakes (using the shear force generated by the magnetization of magnetic powder to brake), magnetic eddy current brakes (adjusting the braking torque by adjusting the excitation current), etc.

[0069] In one embodiment, the machine shell 1101 includes a main housing 1106, a front end cover 1107, and a rear end cover 1108. The front end cover 1107 is installed at the front end of the main housing 1106, and the rear end cover 1108 is installed at the rear end of the main housing 1106. The main housing 1106, the front end cover 1107, and the rear end cover 1108 are sequentially connected and jointly enclose to form the machine cavity 1102.

[0070] The brake 18 includes a brake housing 181. The groove of the brake housing 181 communicates with the machine cavity 1102. The braking member is located within the brake housing 181. The reducer 17 includes a reduction housing 176, bearings 172 installed within the reduction housing 176, a gear carrier 173 installed on the bearings 172, a gear set 174 installed on the gear carrier 173, and an output flange 175 connected to the gear carrier 173. The groove of the reduction housing 176 communicates with the machine cavity 1102. The input transmission shaft is connected to the output transmission shaft 171 through the gear set 174. There are two bearings 172 which are arranged at intervals along the axis of the input transmission shaft. One end of the gear carrier 173 is installed on one of the bearings 172, and the other end of the gear carrier 173 is installed on the other bearing 172. The gears of the gear set 174 are installed on the gear carrier 173, and deceleration is achieved by means of the gears of the gear set 174. One gear of the gear set 174 is connected to the input transmission shaft. The gear carrier 173 is connected to the output flange 175, and the output flange 175 outputs torque. The gear set 174, the bearings 172, and the gear carrier 173 are all installed within the reduction housing 176. The brake housing 181, the rear end cover 1108, the main housing 1106, the front end cover 1107, and the reduction housing 176 are connected in sequence. Among them, the brake housing 181, the rear end cover 1108, and the main housing 1106 are sequentially connected by third threaded fasteners 19, and the main housing 1106, the front end cover 1107, and the reduction housing 176 are sequentially connected by additional third threaded fasteners 19. Specifically, one end of the drive shaft 1105 of the motor 11 is provided with a gear and passes through the interior of the front end cover 1107 and the reduction housing 176. The cavity formed by the common enclosure of the front end cover 1107 and the reduction housing forms the internal space of the reducer 17. The gear on the drive shaft 1105 is placed within this cavity. One end of the gear bracket for supporting the gears of the gear set 174 is installed on the reduction housing 176 through a bearing 172, and the other end of the gear bracket is connected to the front end cover 1107 through another bearing 172. The cavity formed by the common enclosure of the rear end cover 1108 and the brake housing 181 forms the internal space of the brake 18.

[0071] Meanwhile, an embodiment of the present application further provides a wheelchair, particularly an electric wheelchair. The wheelchair includes the above-described driving device. Specifically, the wheelchair further includes a wheelchair body and wheels installed on the wheelchair body. There are at least four wheels, two of which are front wheels with a smaller diameter, and the other two are rear wheels with a larger diameter. The wheelchair body includes components such as a frame and a seat cushion. Each of the two rear wheels corresponds to a driving device. The rear wheels of the wheelchair are connected to the output flange 175. In the field of electric wheelchairs, generally, the drive system of a wheelchair consists of an upper controller, a battery, a motor 11, and a driver 13. The upper controller is also called a joystick. The motor 11 is mainly a direct current brushless motor 11. The user controls the movement, steering, stopping, etc. of the electric wheelchair through the upper controller. An electric wheelchair driven by a direct current brushless motor 11 requires a dedicated driver 13 to control the rotation and torque of the motor 11.

[0072] For the wheelchair of the present application, a mounting position for a motor 11, a mounting position for a rear wheel, and a wiring position are provided on one side of the entire wheelchair. The other side of the entire wheelchair is also arranged in the same way to achieve dual-drive device drive. The drive device of the present application has simple wiring and convenient installation for the entire wheelchair. By adopting the output mode of the speed reducer 17, the motor 11 can be made smaller in volume. In the current electric wheelchair during assembly, the motor 11 needs to be fixed on the wheelchair frame first, and the rear wheel of the wheelchair is connected to the drive shaft 1105 of the motor 11 through the output flange 175. Then the driver 13 is installed on the frame as an independent component. The driver 13 is installed at the bottom of the backrest or seat, and then the motors 11, drivers 13, batteries, and upper controllers on both sides of the wheelchair are connected together by using lead wires 123, communication cables, etc. Since the brushless motor 11 has three-phase wires and signal wires, and the driver 13 has power wires, communication wires, and many other lead wires, various structures have to be made on the entire wheelchair to guide the lead wires. In the present application, the motor 11 and the driver 13 are made into a drive device, and the drive device can be directly installed on the wheelchair body as a whole. Communication cables such as three-phase wires and signal wires between the motor 11 and the driver 13 no longer need to be sorted out. After the drive device is assembled, it is provided to the wheelchair production workshop, making the wheelchair production assembly and wiring simple and convenient. The speed reducer 17, the brake 18, the motor 11, and the driver 13 are made into a drive device as a whole, and then applied in the field of wheelchair drive to reduce the complexity of wheelchair installation.

[0073] In addition, the drive device of the present application can also be applied to devices such as electric vehicles, traction devices, and elevators.

[0074] The technical principle of the present utility model has been described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present utility model and cannot be construed in any way as a limitation on the protection scope of the present utility model. Based on the explanations herein, those skilled in the art can readily conceive of other specific embodiments of the present utility model without creative labor, and these embodiments will all fall within the protection scope of the present utility model.

Claims

1. A driving device, characterized in that: include: A motor (11) comprises a housing (1101); the housing (1101) comprises a housing cavity (1102) and a wiring slot (1103); the wiring slot (1103) comprises a wiring port and a mounting port (1104); the wiring port is in communication with the housing cavity (1102), and the mounting port (1104) is in communication with the outside of the housing (1101); A mounting seat (12) mounted on the housing (1101); the mounting seat (12) covers the mounting opening (1104) and together with the inner wall of the wiring slot (1103) forms a wiring cavity; as well as A driver (13) having a circuit board assembly (121) mounted on the mounting seat (12); The circuit board assembly (121) is located in the wiring cavity and is electrically connected to the motor (11).

2. The driving device according to claim 1, characterized in that: The mounting seat (12) comprises a first shell (111) and a second shell (112); the first shell (111) and the second shell (112) are detachably connected and together enclose a receiving groove (113); the circuit board assembly (121) is mounted in the receiving groove (113); the second shell (112) is provided with a wiring hole (114); the second shell (112) is mounted on the housing (1101) and covers the mounting opening (1104); the receiving groove (113) is connected to the wiring groove (1103) through the wiring hole (114); the inner wall of the receiving groove (113) and the inner wall of the wiring groove (1103) together enclose the wiring cavity.

3. The driving device according to claim 2, characterized in that: The circuit board assembly (121) has a communication connector (122); the circuit board assembly (121) is installed on the second housing (112) and the communication connector (122) is located at the wiring port.

4. The driving device according to claim 2, characterized in that: The second housing (112) is further provided with a clamping groove (115), the wiring hole (114) is opened on the inner wall of the clamping groove (115), and the edge of the installation opening (1104) is clamped in the clamping groove (115).

5. The driving device according to claim 2, characterized in that: It also includes a sealing ring; the sealing ring is clamped between the second shell (112) and the housing (1101) and extends along the edge of the installation opening (1104).

6. The driving device according to claim 5, characterized in that: It also includes a second threaded fastener (15); the first shell (111), the second shell (112), and the housing (1101) are connected in sequence via the second threaded fastener (15), there are multiple second threaded fasteners (15), and the sealing ring and the installation port (1104) are located in an area jointly enclosed by the multiple second threaded fasteners (15).

7. The driving device according to any one of claims 1 to 6, characterized in that: A radiator (16) is mounted on the mounting seat (12).

8. The driving device according to any one of claims 1 to 6, characterized in that: The mounting seat (12) is provided with a wire outlet hole (116), and the driver (13) also has a lead wire (123), one end of the lead wire (123) is located outside the wiring cavity, and the other end of the lead wire (123) passes through the wire outlet hole (116) and is electrically connected to the circuit board assembly (121).

9. The driving device according to any one of claims 1 to 6, characterized in that: It also includes a reducer (17) having an output transmission shaft (171) and an input transmission shaft; the motor (11) includes a stator assembly, a rotor assembly adapted to the stator assembly, and a drive shaft (1105) connected to the rotor assembly; the stator assembly, the rotor assembly, and the drive shaft (1105) are all installed in the machine cavity (1102), the input transmission shaft is transmission-connected to the drive shaft (1105), and the output transmission shaft (171) and the drive shaft (1105) are located on the same straight line.

10. The driving device according to claim 9, characterized in that: It also includes a brake (18); the reducer (17) and the brake (18) are arranged at both ends of the axial direction of the drive shaft (1105), and the driver (13) is arranged on the side of the housing (1101).

11. The driving device according to claim 10, characterized in that: The housing (1101) comprises a main housing (1106), a front end cover (1107), and a rear end cover (1108); the brake (18) comprises a brake housing (181) and a brake member; the brake member is located in the brake housing (181); the reducer (17) comprises a reduction housing (176), a bearing (172) installed in the reduction housing (176), a gear frame (173) installed on the bearing (172), a gear set (174) installed on the gear frame (173), and an output flange (175) connected to the gear frame (173); the input transmission shaft is connected to the output transmission shaft (171) through the gear set (174); The gear set (174) is installed in the reduction housing (176), and the brake housing (181), the rear end cover (1108), the main housing (1106), the front end cover (1107), and the reduction housing (176) are connected in sequence.

12. A wheelchair, characterized in that: Comprising a driving device as claimed in any one of claims 1 to 11.

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