A motor drive device with a removable battery

Abstract

The utility model discloses a motor drive device with a detachable battery, comprising a motor drive unit, a gripping unit and a housing with a battery, wherein the motor drive unit comprises a motor and a housing cavity, wherein the motor is arranged in the housing cavity, the gripping unit comprises a connecting piece, wherein the connecting piece is arranged inside the gripping unit, the motor drive unit and the gripping unit are fixedly connected via the connecting piece, the gripping unit has a cavity, the housing with a battery comprises a battery unit and a shell seat, wherein the battery unit is fixedly connected to the shell seat, the battery unit is detachably loaded into the cavity, and is detachably electrically connected to a first electrical connection unit arranged in the cavity, and the shell seat is detachably mechanically connected to the gripping unit. By detachably loading the housing with a battery into the cavity, the battery of the housing with a battery is electrically connected to the gripping unit, and the shell seat is detachably mechanically connected to the gripping unit, thereby solving the problem of unstable connection caused by the integrated structure of the gripping unit and the battery and the detachable connection of the gripping unit and the motor drive unit in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of motor drive equipment, in particular to a motor drive equipment with a detachable battery. Background Art

[0002] Existing motor-driven handheld devices, especially handheld devices driven by motor high-speed rotation, high-speed rotation refers to the rapid rotation of the device driven by the high-speed operation of the motor. The detachable motor-driven handheld device in the prior art includes a motor drive unit and a gripping unit, the gripping unit is detachably connected to the motor drive unit, a battery is fixedly installed in the gripping unit, that is, the battery is fixedly connected to the handle in an integrated manner, and the battery and the handle are detachably connected to the motor drive unit at the same port. During assembly, the gripping unit and the motor drive unit are fixed by means of snaps, magnetic suction, etc. to achieve mechanical connection, and at the same time, the parts of the gripping unit and the motor drive unit that are close to each other have an electrical connection mechanism to achieve electrical connection. The problem of this motor-driven detachable handheld device is that since the connection between the gripping unit and the motor drive unit must achieve both mechanical connection and electrical connection, when the mechanical connection is made, the connection is prone to virtual position. When the device is turned on and used, due to the high-speed operation of the motor, the entire device is prone to vibration, and the gripping unit and the motor drive unit are prone to shaking, resulting in the problem of unstable electrical and mechanical connections.

[0003] Therefore, a new technical solution is needed to solve the above problems. Utility Model Content

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a motor drive device with a detachable battery, comprising a motor drive part, a grip part and a shell with a battery, the motor drive part comprising a motor and a accommodating cavity, the motor is arranged in the accommodating cavity, the grip part comprises a connecting piece, the connecting piece is arranged inside the grip part, the motor drive part and the grip part are fixedly connected through the connecting piece, the grip part has a cavity with a bottom opening, the shell with a battery comprises a battery part and a shell seat, the battery part is arranged in the shell seat, the battery part can be detachably loaded into the cavity, and is detachably electrically connected to a first electrical connecting part arranged in the cavity, and the shell seat is detachably mechanically connected to the bottom of the grip part.

[0005] Furthermore, a heat dissipation space is provided between the battery portion and the inner wall of the grip portion.

[0006] Furthermore, a left limit plate and a right limit plate are provided inside the gripping portion, and the battery portion is located between the left limit plate and the right limit plate.

[0007] Furthermore, a plurality of heat dissipation holes are provided on the outside of the battery unit.

[0008] Furthermore, the gripping portion is provided with a first clamping portion, and the inner side of the shell seat has a second clamping portion corresponding to the first clamping portion. When the battery portion is completely loaded into the cavity, the first clamping portion and the second clamping portion are correspondingly clamped.

[0009] Furthermore, a first circuit board is provided in the holding portion, and a first electrical connection portion is provided on the first circuit board; a second electrical connection portion electrically connected to the battery portion is provided on the shell with a battery, and the first electrical connection portion is electrically plugged into the second electrical connection portion; a motor circuit board is provided in the motor drive portion, and the motor is electrically connected to the motor circuit board; an acceleration key is provided on the holding portion, and the acceleration key is electrically connected to the motor circuit board.

[0010] Furthermore, a display screen is provided on the housing base, and the display screen is electrically connected to the battery part.

[0011] Furthermore, a continuously variable speed shift key is provided on the shell base, a second circuit board is provided on the inner side of the continuously variable speed shift key, a sliding rheostat is provided on the second circuit board, the continuously variable speed shift key is electrically connected to the sliding rheostat, and by sliding the continuously variable speed shift key upward or downward, the resistance value of the sliding rheostat changes, thereby driving the speed of the motor to change.

[0012] Furthermore, the motor-driven device of the detachable battery is a hair dryer; and fan blades are connected to the rotating shaft of the motor.

[0013] Furthermore, the motor-driven device with a detachable battery is a fascia gun; the fascia gun includes an eccentric wheel, a connecting rod, a piston and a massage head, the eccentric wheel is connected to the rotating shaft of the motor, the connecting rod is connected to the eccentric wheel, the connecting rod is connected to the piston, and the piston is connected to the massage head.

[0014] Due to the adoption of the above technical scheme, the technical progress achieved by the utility model compared with the prior art is as follows: since the holding part and the motor drive part are fixedly connected, the shell with the battery can be detachably loaded into the cavity of the holding part, and during operation, force is avoided from being applied to the battery, and the holding part and the motor drive part are directly fixedly connected, which solves the problem of easy generation of voids at the connection. When the motor runs at high speed, shaking between the holding part and the motor drive part is avoided, thereby improving the stability of the electrical connection and the mechanical connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the motor drive unit and the gripping unit of the utility model;

[0017] Figure 2 It is a schematic diagram of the exploded structure of the motor drive unit and the gripping unit of the utility model;

[0018] Figure 3 This is a schematic structural diagram of a housing with a battery according to the present utility model;

[0019] Figure 4 It is a structural schematic diagram of the electrical connection part of the housing with a battery of the utility model;

[0020] Figure 5 It is a schematic structural diagram of the electrical connection portion of the gripping portion of the utility model;

[0021] Figure 6 It is a schematic diagram of the explosion structure of the hair dryer of the utility model.

[0022] Explanation of the main component symbols: 1. Motor drive unit; 11. First connecting piece; 12. Motor plug; 13. Motor; 131-Rubber sleeve; 14. Second connecting piece; 15. Safety net; 16. Third connecting piece; 17. Motor circuit board; 18. Accommodating cavity; 19. Fan blades; 2. Grip; 3. Shell with battery; 21. Cavity; 22. First circuit board; 222. Accelerator key; 23. First electrical connection part; 31. Battery part; 311. Battery rack; 32. Shell seat; 33. Second clamping part; 34. Heat dissipation hole; 35. Stepless speed change key; 36. Display screen; 37. Second electrical connection part; 4. Connector; 5. Left limit plate; 6. Right limit plate.

[0023] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0024] In order to make the technical personnel of the technical field better understand the scheme of the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by the technical personnel in the technical field of the utility model. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to include but are not limited to inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] See also Figure 1-5 The embodiment of the utility model provides a motor drive device with a removable battery, including a motor drive unit 1, a gripping unit 2 and a shell 3 with a battery, wherein the motor drive unit 1 includes a motor 13 and a housing chamber 18, wherein the motor 13 is arranged in the housing chamber 18, the gripping unit 2 includes a connecting piece 4, wherein the connecting piece 4 is arranged inside the gripping unit 2, the motor drive unit 1 is fixedly connected to the gripping unit 2 via the connecting piece 4, the motor drive unit 1 is fixedly connected to the gripping unit 2, the gripping unit 2 has a cavity 21 with a bottom opening, the shell 3 with a battery includes a battery unit 31 and a shell seat 32, the battery unit 31 is arranged in the shell seat 32, the battery unit 31 can be detachably loaded into the cavity 21, and can be detachably electrically connected to the first electrical connecting unit 23 arranged in the cavity 21, and the shell seat 32 can be detachably mechanically connected to the bottom of the gripping unit 2.

[0027] Since the holding portion 2 and the motor drive portion 1 are fixedly connected, the shell 3 with the battery can be detachably installed in the cavity 21 of the holding portion 2. During operation, the force applied to the battery portion 31 is avoided, which solves the problem that the force applied to the battery portion 31 during holding is not conducive to the uniform force on the battery portion 31, which easily causes uneven force at the connection and unstable electrical connection. The holding portion 2 is directly fixedly connected to the motor drive portion 1. When the motor runs at high speed, shaking between the holding portion 2 and the motor drive portion 1 is avoided, thereby improving stability.

[0028] A left limit plate 5 and a right limit plate 6 are provided inside the grip portion 2, and the battery portion 31 is disposed between the left limit plate 5 and the right limit plate 6. The left limit member 5 and the right limit member 6 limit the battery portion 31. The grip portion 2 is fixedly connected to the motor drive portion 1 through the connecting member 4. Specifically, the grip portion 2 is fixedly connected to the connecting member 4 and the motor drive portion 1 through screws.

[0029] There is a heat dissipation space between the portion of the housing 3 with the battery that is loaded into the cavity 21 and the inner wall of the grip 2 . Specifically, there is a heat dissipation space between the battery portion 31 and the inner wall of the grip 2 .

[0030] The battery part 31 includes a battery rack 311 and a battery. The battery rack 311 extends outward along the shell seat 32. The battery is fixedly arranged in the battery rack 311. A second electrical connection part 37 is provided at one end of the battery rack 311. The second electrical connection part 37 is electrically connected to the battery. The outer diameter of the battery rack 311 is smaller than the inner diameter of the shell seat 32. When assembling, when the shell 3 with the battery is loaded into the cavity 21, the second electrical connection part of the battery rack 311 is detachably electrically connected to the first electrical connection part 23 of the cavity 21, and the shell seat 32 is detachably mechanically connected to the bottom of the grip 2. There is a space between the battery rack 311 and the inner wall of the grip 2, and the space can be used for heat dissipation. When disassembling, the shell seat 32 is separated from the grip 2, and the shell 3 with the battery can be separated from the grip 2. This structure is relatively simple in assembly and disassembly operations, which is convenient for users to replace the shell 3 with the battery by themselves, so as to realize the replacement of the battery of the motor-driven device with a detachable battery and improve the endurance of the device.

[0031] The battery is installed in the battery rack 311, and is installed into the cavity 21 of the grip 2 through the battery rack 311 to form the battery part 31. There is space between the battery rack 311 and the inner wall of the grip 2. When holding, the force is only applied to the grip 2, and no force is applied to the battery part 31 and the battery rack 311, which solves the problem of uneven force on the battery part 31 and the battery rack 311, thereby causing the unstable electrical connection between the battery part 31 and the motor drive part 1. Since the shell seat 32 is mechanically connected to the bottom of the grip 2, the force of holding mainly acts on the grip 2, so the shell seat 32 is not affected by the holding force, and the high-speed rotation of the motor during operation has little effect on the connection between the shell seat 32 and the grip 2.

[0032] The battery frame 311 of the battery unit 31 is provided with a plurality of heat dissipation holes 34 on its exterior, which are helpful for dissipating the heat generated by the battery unit 31 during operation.

[0033] A first circuit board 22 is provided in the grip portion 2, and a first electrical connection portion 23 is provided on the first circuit board 22; a second electrical connection portion 37 electrically connected to the battery portion 31 is provided on the housing 3 with a battery, and the first electrical connection portion 23 is electrically plugged into the second electrical connection portion 37. The electrical connection is achieved by means of electrical plugging, so that signal lines are avoided from being routed in the cavity 21, the structure is neat, and when the user replaces the housing 3 with a battery by himself, the operation is convenient, and the reliability of the electrical connection is enhanced.

[0034] A motor circuit board 17 is further provided in the motor driving unit 1 , the first circuit board 22 is electrically connected to the motor circuit board 17 , and the motor 13 is electrically connected to the motor circuit board 17 .

[0035] The left limit plate 5 and the right limit plate 6 are fixed inside the holding part 2. Specifically, one end of the left limit plate 5 and the right limit plate 6 are respectively fixed on the first circuit board 22, and the other end of the left limit plate 5 and the right limit plate 6 are respectively fixed on the inner wall of the holding part 2, thereby forming a limit space to limit the battery part 31.

[0036] The grip portion 2 is provided with an accelerator key 222, which is electrically connected to the motor circuit board 17, and can also be electrically connected to the motor circuit board 17 through the first circuit board 22. When the accelerator key 222 is pressed, the speed of the motor 13 reaches the maximum output.

[0037] The grip portion 2 is provided with a first clamping portion, and the inner side of the shell seat 32 is provided with a second clamping portion 33 corresponding to the first clamping portion. During assembly, when the battery portion 31 is completely loaded into the cavity 21, the first clamping portion and the second clamping portion 33 are correspondingly clamped. During disassembly, the outer side of the second clamping portion 33 is pressed at the same time, so that the second clamping portion 33 is simultaneously subjected to inward pressure and is separated from the corresponding first clamping portion, thereby taking out the shell 3 with the battery. When the first set of shells 3 with batteries runs out of power, another set of shells 3 with batteries is connected to the handle 2, so that the device can continue to work, thereby extending the working time and facilitating outdoor use.

[0038] The housing base 32 is provided with a display screen 36, which is electrically connected to the battery unit 31. Specifically, the display screen 36 is electrically connected to the battery, and the display screen 36 is used to display the rotation speed and / or power of the motor.

[0039] The shell base 32 is provided with a stepless speed change key 35, a second circuit board is provided inside the stepless speed change key 35, a sliding rheostat is provided on the second circuit board, the stepless speed change key 35 is electrically connected to the sliding rheostat, and the stepless speed change key 35 is slid upward or downward to drive the resistance value of the sliding rheostat to change, thereby driving the speed of the motor 18 to change. The speed of the motor 18 is changed by the structure of the stepless speed change key 35, and the speed of the motor 18 can be changed by sliding during operation, which solves the problem of cumbersome operation caused by constantly pressing a button to change the speed of the motor in conventional technology.

[0040] In one embodiment, Figure 6 As shown, the motor-driven device with a detachable battery is a hair dryer. The motor driving part 1 is a wind tube part, the motor 18 is arranged in the accommodating cavity 18 of the wind tube part, the motor 18 is connected to the fan blade 19, the outside of the motor 13 is provided with a rubber sleeve 131, the rubber sleeve 131 is a silicone sleeve with an annular concave-convex shape, the motor 18 and the fan blade 19 are arranged inside the rubber sleeve 131, and the outside of the rubber sleeve 131 is connected to the inner wall of the wind tube part. The rubber sleeve 131 is an annular concave-convex shape, so that the connection with the inner wall of the wind tube part is more firm, and it can better reduce the vibration caused by the rotation of the motor 13.

[0041] The fan blade 19 is arranged on the rotating shaft of the motor 13, and a motor plug 12 is arranged on the outer side of the fan blade 19 on the rotating shaft of the motor 13. The motor plug 12 is used to protect the rotating shaft of the motor 13 and the fan blade 19.

[0042] One end of the wind tube is also connected to a first connector 11, and a motor plug 12 is disposed in a space between the first connector 11 and the wind tube; the other end of the wind tube is also connected to a second connector 14, a safety net 15 and a third connector 16, and the safety net 15 is connected between the second connector 14 and the third connector 16. The second connector 14 and the third connector 16 are used to fix the safety net 15, and the safety net 15 is used to filter foreign objects such as dust and fine particles.

[0043] In another embodiment, the motor-driven device with a detachable battery is a fascia gun. The motor drive unit 1 is a transmission unit, and the motor 13 is arranged in the accommodating chamber 18. The motor 13 is fixedly connected to the accommodating chamber 18 through a motor seat. The accommodating chamber 18 also includes an eccentric wheel, a connecting rod and a piston. The rotating shaft of the motor 13 is connected to one end of the eccentric wheel, and the other end of the eccentric wheel is connected to the connecting rod, the connecting rod is connected to the piston, and the piston is connected to the massage head. The eccentric wheel is driven to rotate by the motor 13, thereby driving the connecting rod and the piston to reciprocate. The technology of the above-mentioned motor driving the massage head to reciprocate is a prior art. The shell 3 with the battery is detachably connected to the holding part 2. When the fascia gun is working, since the holding part 2 and the motor drive part 1 are fixedly connected, the shell 3 with the battery can be detachably loaded into the cavity 21 of the holding part 2. During operation, the force applied to the battery part 31 is avoided, which solves the problem that the force applied to the battery part 31 during holding, resulting in uneven force on the battery part 31, which easily causes uneven force at the connection between the motor drive part 1 and the holding part 2, and easily causes problems of unstable mechanical and electrical connections. The holding part 2 is directly fixedly connected to the motor drive part 1. When the motor runs at high speed, shaking between the holding part 2 and the motor drive part 1 is avoided, thereby improving the stability of the fascia gun.

[0044] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A motor drive device with a removable battery, characterized in that: The invention comprises a motor drive unit (1), a gripping unit (2) and a housing (3) with a battery, wherein the motor drive unit (1) comprises a motor (13) and a housing (18), wherein the motor (13) is arranged in the housing (18), and the gripping unit (2) comprises a connecting piece (4), wherein the connecting piece (4) is arranged inside the gripping unit (2), and the motor drive unit (1) and the gripping unit (2) are fixedly connected via the connecting piece (4), and the gripping unit (2) has a bottom The housing (3) with the battery comprises a battery portion (31) and a housing seat (32); the battery portion (31) is arranged in the housing seat (32); the battery portion (31) can be detachably loaded into the cavity (21) from the opening of the cavity (21) and can be detachably electrically connected to a first electrical connection portion (23) arranged in the cavity (21); and the housing seat (32) can be detachably mechanically connected to the bottom of the gripping portion (2).

2. The motor drive device with a detachable battery as claimed in claim 1, characterized in that: A heat dissipation space is provided between the battery portion (31) and the inner wall of the grip portion (2).

3. The motor drive device with a detachable battery as claimed in claim 2, characterized in that: A left limit plate (5) and a right limit plate (6) are provided inside the gripping portion (2), and the battery portion (31) is located between the left limit plate (5) and the right limit plate (6).

4. The motor drive device with a detachable battery as claimed in claim 3, characterized in that: A plurality of heat dissipation holes (34) are provided outside the battery part (31).

5. The motor drive device with a detachable battery as claimed in claim 4, characterized in that: The gripping portion (2) is provided with a first clamping portion, and the inner side of the shell seat (32) has a second clamping portion (33) corresponding to the first clamping portion. When the battery portion (31) is completely inserted into the cavity (21), the first clamping portion and the second clamping portion (33) are correspondingly clamped.

6. The motor drive device with a detachable battery as claimed in claim 5, characterized in that: The holding portion (2) is provided with a first circuit board (22), and the first circuit board (22) is provided with a first electrical connection portion (23); the housing (3) with a battery is provided with a second electrical connection portion (37) electrically connected to the battery portion (31), and the first electrical connection portion (23) is electrically plugged into the second electrical connection portion (37); the motor drive portion (1) is provided with a motor circuit board (17), and the motor (13) is electrically connected to the motor circuit board (17); the holding portion (2) is provided with an acceleration key (222), and the acceleration key (222) is electrically connected to the motor circuit board (17).

7. The motor drive device with a detachable battery as claimed in claim 6, characterized in that: A display screen (36) is provided on the housing seat (32), and the display screen (36) is electrically connected to the battery part (31).

8. The motor drive device with a detachable battery as claimed in claim 7, characterized in that: The shell seat (32) is provided with a stepless speed change key (35), a second circuit board is provided on the inner side of the stepless speed change key (35), a sliding rheostat is provided on the second circuit board, the stepless speed change key (35) is electrically connected to the sliding rheostat, and by sliding the stepless speed change key (35) upward or downward, the resistance value of the sliding rheostat changes, thereby changing the rotation speed of the motor.

9. The motor drive device with a detachable battery as claimed in any one of claims 1 to 8, characterized in that: The motor-driven device of the detachable battery is a hair dryer; the rotating shaft of the motor (13) is connected with a fan blade (19).

10. The motor drive device with a detachable battery as claimed in any one of claims 1 to 8, characterized in that: The motor-driven device with a detachable battery is a fascia gun; the fascia gun comprises an eccentric wheel, a connecting rod, a piston and a massage head, the rotating shaft of the motor (13) is connected to the eccentric wheel, the connecting rod is connected to the eccentric wheel, the connecting rod is connected to the piston, and the piston is connected to the massage head.

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