Ultra-slight silence power-saving motor for reduction gearbox on wheelchair

Abstract

The utility model relates to the technical field of wheelchair driving, in particular to an ultra-slight mute power-saving motor for a reduction gearbox on a wheelchair, which comprises a shell and an end cover which are matched with each other, and a stator, a rotor and a control panel which are arranged in the shell and the end cover, an even number of wrapping posts are evenly arranged on the circumference of the inner side of the stator, each wrapping post is provided with a coil winding, a rotating groove is defined by all the wrapping posts, the rotor is arranged in the rotating groove and comprises a rotating shaft, a rotating block and a permanent magnet, and a plurality of heat dissipation rings are evenly arranged on the outer side of the shell from the end to the tail. The heat dissipation ring and the shell are integrally formed, a guide groove is formed in the inner side wall of the shell, a guide protrusion matched with the guide groove is arranged on the outer side wall of the stator, a plurality of vertical heat conduction protrusions are evenly arranged on the circumference of the inner side wall of the shell, and the heat conduction protrusions are attached to the outer side wall of the stator. And the endurance mileage of the wheelchair is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchair driving, and specifically relates to an ultra-light, silent and energy-saving motor for a reduction box on a wheelchair. Background Art

[0002] Since most of the users of electric wheelchairs are injured, sick or elderly people, the performance of the wheelchair itself needs to be stable and comfortable, and the movement and transmission of the wheelchair need to be applied to the motor reducer assembly to achieve. The current wheelchairs themselves are heavy, which increases the weight of the wheelchair, making it difficult for injured, sick or elderly people to use. In addition, in order to achieve the torque that can be used for the operation of the wheelchair, the design volume of the motor currently used is increased to achieve a motor that meets the torque requirements. However, the increase in the motor will lead to an increase in the overall weight of the wheelchair, which is not conducive to user use. At the same time, wheelchairs are generally used for long periods of time outside. If ordinary motors are used, the motor will heat up and be damaged due to long-term operation.

[0003] Although there are motors equipped with fans to heat the motors and reduce the problem of motor damage, the setting of the fan will increase the load of the electric wheelchair, causing its power consumption to increase and its cruising range to decrease at the same power capacity. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an ultra-light, silent and energy-saving motor for a reduction box on a wheelchair.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ultra-light, silent and energy-saving motor for a reduction box on a wheelchair, an ultra-light, silent and energy-saving motor for a reduction box on a wheelchair, comprising a shell and an end cover that cooperate with each other, and a stator, a rotor and a control panel arranged in the shell and the end cover, the stator being mounted on the inner wall of the shell in a circumferential manner, an even number of winding posts being evenly arranged on the inner circumference of the stator, each winding post being provided with a coil winding, all the winding posts being combined to form a rotating groove, the rotor being arranged in the rotating groove, the rotor comprising a rotating shaft, a rotating block and a permanent magnet, the rotating shaft passing through the center of the rotating block and being fixedly arranged, and the rotating block being evenly arranged in the circumferential direction thereof. There are 4 installation grooves, each of which is fixed with a permanent magnet. Bearings are respectively arranged at both ends of the rotating shaft, one of which is fixed on the end cover, and the other is fixed on the tail end of the shell. The control board is installed in the end cover, and the wire terminals of all coil windings are connected to the corresponding connection points on the control board. The outer side of the shell is evenly arranged from the end to the tail with a plurality of heat dissipation rings, and the heat dissipation rings and the shell are integrally formed. A guide groove is arranged on the inner side wall of the shell, and a guide protrusion cooperating with the guide groove is arranged on the outer side wall of the stator. A plurality of vertical heat conduction protrusions are evenly arranged on the circumference of the inner side wall of the shell, and the heat conduction protrusions are in contact with the outer side wall of the stator.

[0006] In some of the embodiments, the housing and the heat dissipation ring are made of lightweight aluminum or cast aluminum alloy.

[0007] In some embodiments, the outer surface of the heat dissipation ring is a smooth surface.

[0008] In some of the embodiments, a rear cover is provided at the outer rear end of the shell.

[0009] In some of the embodiments, a manual brake cooperating with the rotating shaft is provided at the outer rear end of the housing.

[0010] In some embodiments, the manual brake includes a mounting mechanism and a brake device, the mounting mechanism includes a mounting block, a fixed block and a locking body, the fixed block is fixed on the shell, and a through hole is provided at the center of the fixed block, one end of the rotating shaft located at the rear end of the shell passes through the through hole, the locking body is fixedly mounted on the rotating shaft, the mounting block is fixed on the fixed block, and a support rod is provided between the mounting block and the fixed block, and there are multiple support rods, and the multiple support rods are evenly arranged around the edge between the mounting block and the fixed block, the mounting block is fixedly connected to the fixed block through the support rod, the brake device is provided in cooperation with the fixed block, and the locking end of the brake device corresponds to the locking body.

[0011] In some embodiments, the brake device includes an operating rod, a push rod, a spring, a push block and a brake disc, the push block is arranged between the mounting block and the fixed block, and a notch is arranged at the edge of the push block corresponding to each support rod, the notch and the support rod are slidably matched, the brake disc is arranged between the fixed block and the push block, and the brake disc is matched with the locking body, a sliding hole is arranged at the central axis of the mounting block, the push rod is slidably installed in the sliding hole, the spring is sleeved on the push rod, and one end of the spring away from the brake disc abuts on the mounting block, and one end of the spring close to the brake disc abuts on the push rod, the operating rod is arranged on a side end of the mounting block away from the brake disc, and the operating rod is fixedly connected to one end of the push rod away from the brake disc, the operating rod is provided on a side surface of the operating rod corresponding to the mounting block, at least two limiting holes are provided, each limiting hole is provided in a steel ball, and a sliding groove is provided on the mounting block corresponding to each steel ball, the sliding groove is arranged as an oblique groove, and each steel ball is driven by the operating rod to slide in the corresponding sliding groove.

[0012] In some embodiments, an arc-shaped limit groove is provided on the operating rod, and a limit rod is provided on the mounting block corresponding to the arc-shaped limit groove. The slide groove consists of a positioning hole one, a slideway and a positioning hole two. The spherical depth of the positioning hole one is greater than the spherical depth of the positioning hole two. The slideway is located on the surface of the mounting block, and the two ends of the slideway are respectively connected to the positioning hole one and the positioning hole two.

[0013] In some embodiments, a contact switch is provided on one side surface of the operating rod on the mounting block, and a switch button of the contact switch is provided toward an edge of the operating rod, and a protrusion is provided on the edge of the operating rod corresponding to the switch button of the contact switch.

[0014] In some embodiments, the number of winding poles is 6 or 8.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] By improving the structure of the motor used in the wheelchair, removing the fan and adding a heat dissipation ring structure, the heat continuously dissipated by the motor during stable operation is basically the same as that of the motor with a fan;

[0017] By removing the fan structure, the wheelchair's operating energy consumption was reduced by 40% under the same electrical capacity.

[0018] The fanless structure makes the motor produce less noise when running, which can achieve a silent motor effect and improve the user's comfort.

[0019] By setting the brake device, the motor can be braked, so that the motor and the reduction box stop working, and the initial state of the motor is a braking state. After human operation, the brake can be separated, so that the motor can run and drive the reduction box to run, thereby ensuring the reliability of the wheelchair.

[0020] Details of one or more embodiments of the present application are presented in the following drawings and descriptions to make other features, purposes and advantages of the present application more concise and easy to understand. The present application is fully described and understood through the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of the first embodiment of the utility model;

[0022] Figure 2 This is a cross-sectional view of the first embodiment of the utility model;

[0023] Figure 3 This is a structural schematic diagram of the second embodiment of the utility model;

[0024] Figure 4 This is a cross-sectional view of the second embodiment of the utility model;

[0025] Figure 5 for Figure 4 Bottom view of the middle mounting block;

[0026] Figure 6 for Figure 4 Top view of the middle operating lever;

[0027] Figure 7 The cross-sectional view of the matching relationship between the mounting block, the operating rod and the steel ball of the second embodiment Figure 1 ;

[0028] Figure 8 The cross-sectional view of the matching relationship between the mounting block, the operating rod and the steel ball of the second embodiment Figure 2 .

[0029] In the figure: 1. shell; 2. end cover; 3. stator; 4. rotor; 5. control board; 6. shaft; 7. rotating block; 8. heat dissipation ring; 9. guide groove; 10. guide protrusion; 11. back cover; 12. hand brake; 13. operating lever; 14. mounting block; 15. push rod; 16. spring; 17. push block; 18. brake disc; 19. locking body; 20. fixing block; 21. support rod; 22. sliding hole; 23. steel ball; 24. arc limit groove; 25. limit rod; 26. slide groove; 27. positioning hole one; 28. slideway; 29. ​​positioning hole two; 30. contact switch; 31. protrusion; 32. winding column; 33. permanent magnet; 34. heat-conducting protrusion. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0031] See also Figure 1-2 The utility model provides a technical solution: an ultra-light, silent and energy-saving motor for a reduction box on a wheelchair, comprising a housing 1 and an end cover 2 that cooperate with each other, and a stator 3, a rotor 4 and a control panel 5 arranged in the housing 1 and the end cover 2, wherein the stator 3 is mounted around the inner wall of the housing 1, and an even number of winding posts 32 (the winding posts 32 are arranged in 6 or 8 numbers) are evenly arranged on the inner circumference of the stator 3, each winding post 32 is provided with a coil winding, and all the winding posts 32 are surrounded to form a rotating groove, and the rotor 4 is arranged in the rotating groove, and the rotor 4 includes a rotating shaft 6, a rotating block 7 and a permanent magnet 33, and the rotating shaft 6 passes through the center of the rotating block 7 and is fixedly arranged, and the rotating block 7 is evenly provided with 4 mounting grooves in the circumferential direction. A permanent magnet 33 is fixedly installed in each mounting groove, bearings are respectively arranged at both ends of the rotating shaft 6, one bearing is fixed on the end cover 2, and the other bearing is fixed on the tail end of the shell 1, the control board 5 is installed in the end cover 2, and the wire terminals of all coil windings are connected to the corresponding connection points on the control board 5, and a plurality of heat dissipation rings 8 are evenly arranged on the outer side of the shell 1 from the end to the tail, and the heat dissipation ring 8 and the shell 1 are integrally formed, and a guide groove 9 is arranged on the inner side wall of the shell 1, and a guide protrusion 3110 cooperating with the guide groove 9 is arranged on the outer side wall of the stator 3, and a plurality of vertical heat conduction protrusions 3431 are evenly arranged on the circumference of the inner side wall of the shell 1, and the heat conduction protrusion 3431 is in contact with the outer side wall of the stator 3.

[0032] The housing 1 and the heat sink ring 8 are both made of lightweight aluminum. By setting lightweight aluminum, the weight of the motor can be further reduced. At the same time, the structural strength of the motor is also within the safe use range of wheelchair motors. It can also be made of cast aluminum alloy injection molding.

[0033] The outer surface of the heat dissipation ring 8 is a smooth surface, which prevents oil or dust from adhering to the surface of the motor and is easy to clean after long-term use.

[0034] A rear cover 11 is provided at the external rear end of the shell 1, and a manufacturer or buyer logo may be provided on the rear cover 11. At the same time, the rear cover 11 can be provided to seal the rear end of the shell 1, so that the interior of the motor shell 1 is in a closed state as a whole, thereby preventing external dust from entering the shell 1 during use and causing wear to the internal structure of the motor.

[0035] Through this technical solution, the motor is connected to the wheelchair controller, and the motor is rotated by the controller to realize forward and reverse rotation of the motor, thereby driving the wheelchair forward, backward, or stop. Example

[0036] like Figure 3-6 As shown, on the basis of Example 1, a manual brake 12 cooperating with the rotating shaft 6 is provided at the external rear end of the shell 1. The manual brake 12 is installed on the shell 1 by removing the rear cover 11. At the same time, the rear end of the rotating shaft 6 is extended to the outside of the rear end of the shell 1 to cooperate with the manual brake 12. At the same time, in order to improve the use effect of the rear end of the shell 1 and the manual brake 12, a protective shell is covered on the outside of the rear end of the shell 1 and the manual brake 12.

[0037] The hand brake 12 includes a mounting mechanism and a brake device, wherein the mounting mechanism includes a mounting block 14, a fixing block 20 and a locking body 19, wherein the fixing block 20 is fixed on the housing 1, and a through hole is provided at the center of the fixing block 20, and the rotating shaft 6 is located at one end of the rear end of the housing 1 and passes through the through hole, and the locking body 19 is fixedly mounted on the rotating shaft 6, the mounting block 14 is fixed on the fixing block 20, and a support rod 21 is provided between the mounting block 14 and the fixing block 20, and a plurality of support rods 21 are provided, and a plurality of support rods 21 are evenly arranged around the edge between the mounting block 14 and the fixing block 20, the mounting block 14 is fixedly connected to the fixing block 20 through the support rod 21, and the brake device is provided in cooperation with the fixing block 20, and the locking end of the brake device corresponds to the locking body 19.

[0038] The brake device includes an operating rod 13, a push rod 15, a spring 16, a push block 17 and a brake disc 18. The push block 17 is arranged between the mounting block 14 and the fixed block 20, and a notch is arranged at the edge of the push block 17 corresponding to each support rod 21, and the notch and the support rod 21 are slidably matched. The brake disc 18 is arranged between the fixed block 20 and the push block 17, and the brake disc 18 is matched with the locking body 19. A sliding hole 22 is arranged at the central axis of the mounting block 14, and the push rod 15 is slidably installed in the sliding hole 22. The spring 16 is sleeved on the push rod 15, and the spring 16 is away from the brake disc 18. One end of the spring 16 abuts against the mounting block 14, and the end of the spring 16 close to the brake disc 18 abuts against the push rod 15. The operating rod 13 is arranged on a side end of the mounting block 14 away from the brake disc 18, and the operating rod 13 is fixedly connected to the end of the push rod 15 away from the brake disc 18. The operating rod 13 is provided with at least two limiting holes on a side surface corresponding to the mounting block 14, and a steel ball 23 is provided in each limiting hole. A slide groove 26 is provided on the mounting block 14 corresponding to each steel ball 23. The slide groove 26 is an oblique groove, and each steel ball 23 is driven by the operating rod 13 to slide in the corresponding slide groove 26.

[0039] The operating rod 13 is provided with an arc-shaped limiting groove 245, and the mounting block 14 is provided with a limiting rod 25 at a position corresponding to the arc-shaped limiting groove 245;

[0040] like Figure 7-8 As shown, the slide groove 26 is composed of a positioning hole 27, a slideway 28 and a positioning hole 29. The spherical depth of the positioning hole 27 is greater than the spherical depth of the positioning hole 29. The slideway 28 is located on the surface of the mounting block 14, and the two ends of the slideway 28 are respectively connected to the positioning hole 27 and the positioning hole 29.

[0041] When in the initial state, the steel ball is located in the first positioning hole 27, so that the distance between the operating rod 13 and the mounting block 14 is small, and the push rod 15 can drive the push block 17 to press the brake disc 18 through the pressure of the spring 16, so that the initial state is the braking state; when the operating rod 13 is pulled, the steel ball is located in the second positioning hole 29, so that the distance between the operating rod 13 and the mounting block 14 becomes larger, so that the operating rod 13 drives the push rod 15 to slide into the mounting block 14, and the push block 17 is separated from the brake disc 18.

[0042] A contact switch 30 is arranged on one side surface of the operating rod 13 on the mounting block 14, and the switch button of the contact switch 30 is arranged toward the edge of the operating rod 13. A protrusion 31 is arranged at the edge of the operating rod 13 corresponding to the switch button of the contact switch 30. At the same time, the contact switch 30 is connected in series to the power input end of the motor, so that the power to the motor is cut off when braking is achieved, avoiding the braking state and the motor being damaged by continuous rotation.

[0043] In the initial state, the protrusion 31 on the operating rod 13 presses the contact button on the contact switch 30, so that the contact is disconnected in the pressed state, so that the motor power is not energized. When the operating rod 13 rotates, so that the protrusion 31 is separated from the contact button, the contact switch 30 is merged, and the power of the motor is turned on.

[0044] The protective shell located outside the hand brake 12 has a slotted hole on its side, and the operating rod 13 extends from the slotted hole to the outside of the protective shell. The slotted hole is a long strip-shaped hole, and the operating rod 13 can be operated and swung in the slotted hole.

[0045] Through the technical solution, in the initial state, the distance between the operating rod 13 and the mounting block 14 is small, and the push rod 15 drives the push block 17 to press the brake disc 18 through the elastic force of the spring 16 to brake the motor. At the same time, the protrusion 31 on the operating rod 13 presses the contact button on the contact switch 30, so that the contact switch 30 is in the disconnected state and the motor is not energized; when the operating rod 13 is pulled, the operating rod 13 increases the distance between the operating rod 13 and the mounting block 14 through the action of the steel ball, and the operating rod 13 drives the push rod 15 to slide into the mounting block 14, and then the push rod 15 drives the push block 17 away from the brake disc 18, so that the brake disc 18 moves, and at the same time, the protrusion 31 on the operating rod 13 separates from the contact switch 30, and the contact switch 30 is turned on, so that the motor can run.

[0046] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultra-light, silent and energy-saving motor for a reduction gearbox on a wheelchair, characterized in that: The invention comprises a housing and an end cover which cooperate with each other, and a stator, a rotor and a control panel which are arranged in the housing and the end cover. The stator is mounted on the inner wall of the housing in a circumferential manner. An even number of winding posts are evenly arranged on the inner circumference of the stator. Each winding post is provided with a coil winding. All the winding posts are combined to form a rotating groove. The rotor is arranged in the rotating groove. The rotor comprises a rotating shaft, a rotating block and a permanent magnet. The rotating shaft passes through the center of the rotating block and is fixedly arranged. Four mounting grooves are evenly arranged in the circumferential direction of the rotating block. A permanent magnet is fixedly installed in each mounting groove. The two ends of the rotating shaft are divided into Bearings are separately provided, one of which is fixed on the end cover, and the other bearing is fixed on the tail end of the shell. The control board is installed in the end cover, and the wire terminals of all coil windings are connected to the corresponding connection points on the control board. The outer side of the shell is evenly arranged from the end to the tail with a plurality of heat dissipation rings, and the heat dissipation rings and the shell are integrally formed. A guide groove is provided on the inner side wall of the shell, and a guide protrusion matching the guide groove is provided on the outer side wall of the stator. A plurality of vertical heat conduction protrusions are evenly arranged on the circumference of the inner side wall of the shell, and the heat conduction protrusions are in contact with the outer side wall of the stator.

2. The ultra-light, silent and energy-saving motor for a reduction gearbox on a wheelchair according to claim 1, characterized in that: The shell and the heat dissipation ring are both made of light aluminum or cast aluminum alloy.

3. The ultra-light, silent and energy-saving motor for a reduction box on a wheelchair according to claim 2, characterized in that: The outer surface of the heat dissipation ring is a smooth surface.

4. The ultra-light, silent and energy-saving motor for a reduction gearbox on a wheelchair according to claim 1, characterized in that: A rear cover is arranged at the outer rear end of the shell.

5. The ultra-light, silent and energy-saving motor for a reduction gearbox on a wheelchair according to claim 1, characterized in that: A manual brake matched with the rotating shaft is arranged at the outer rear end of the shell.

6. The ultra-light, silent and energy-saving motor for a reduction gearbox on a wheelchair according to claim 5, characterized in that: The hand brake includes a mounting mechanism and a brake device, the mounting mechanism includes a mounting block, a fixed block and a locking body, the fixed block is fixed on the shell, and a through hole is arranged at the center of the fixed block, one end of the rotating shaft located at the rear end of the shell passes through the through hole, the locking body is fixedly mounted on the rotating shaft, the mounting block is fixed on the fixed block, and a support rod is arranged between the mounting block and the fixed block, and there are multiple support rods, and the multiple support rods are evenly arranged around the edge between the mounting block and the fixed block, the mounting block is fixedly connected to the fixed block through the support rod, the brake device is arranged in cooperation with the fixed block, and the locking end of the brake device corresponds to the locking body.

7. The ultra-light, silent and energy-saving motor for a reduction gearbox on a wheelchair according to claim 6, characterized in that: The brake device comprises an operating rod, a push rod, a spring, a push block and a brake disc, the push block is arranged between the mounting block and the fixed block, and a notch is arranged at the edge of the push block corresponding to each support rod, the notch and the support rod are slidably matched, the brake disc is arranged between the fixed block and the push block, and the brake disc is matched with the locking body, a sliding hole is arranged at the central axis of the mounting block, the push rod is slidably mounted in the sliding hole, the spring is sleeved on the push rod, and one end of the spring away from the brake disc abuts on the mounting block, and one end of the spring close to the brake disc abuts on the push rod, the operating rod is arranged on a side end of the mounting block away from the brake disc, and the operating rod is fixedly connected to one end of the push rod away from the brake disc, the operating rod is arranged on a side surface of the mounting block corresponding to at least two limiting holes, each limiting hole is arranged in a steel ball, and a sliding groove is arranged on the mounting block corresponding to each steel ball, the sliding groove is arranged as an oblique groove, and each steel ball is driven by the operating rod to slide in the corresponding sliding groove.

8. The ultra-light, silent and energy-saving motor for a reduction gearbox on a wheelchair according to claim 7, characterized in that: An arc-shaped limit groove is arranged on the operating rod, and a limit rod is arranged on the mounting block corresponding to the arc-shaped limit groove. The slide groove consists of a positioning hole 1, a slideway and a positioning hole 2. The spherical depth of the positioning hole 1 is greater than the spherical depth of the positioning hole 2. The slideway is located on the surface of the mounting block, and the two ends of the slideway are respectively connected to the positioning hole 1 and the positioning hole 2.

9. The ultra-light, silent and energy-saving motor for a reduction gearbox on a wheelchair according to claim 6, characterized in that: A contact switch is arranged on one side of the operating rod on the mounting block, and a switch button of the contact switch is arranged toward the edge of the operating rod. A protrusion is arranged on the edge of the operating rod corresponding to the switch button of the contact switch.

10. The ultra-light, silent and energy-saving motor for a reduction gearbox on a wheelchair according to claim 1, characterized in that: The number of winding poles is 6 or 8.

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