CN116191770A - Assembling structure of ratchet wrench head and brushless motor - Google Patents

Assembling structure of ratchet wrench head and brushless motor Download PDF

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Publication number
CN116191770A
CN116191770A CN202211704453.3A CN202211704453A CN116191770A CN 116191770 A CN116191770 A CN 116191770A CN 202211704453 A CN202211704453 A CN 202211704453A CN 116191770 A CN116191770 A CN 116191770A
Authority
CN
China
Prior art keywords
brushless motor
ratchet wrench
wrench head
ratchet
cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211704453.3A
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Chinese (zh)
Inventor
齐院宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Xiaoqiang Electronic Technology Co ltd
Original Assignee
Dongguan Xiaoqiang Electronic Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongguan Xiaoqiang Electronic Technology Co ltd filed Critical Dongguan Xiaoqiang Electronic Technology Co ltd
Priority to CN202211704453.3A priority Critical patent/CN116191770A/en
Publication of CN116191770A publication Critical patent/CN116191770A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The invention relates to an assembling structure of a ratchet wrench head and a brushless motor in the field of assembling structures of ratchet wrenches, which comprises the ratchet wrench head and a brushless motor body connected with the ratchet wrench head, wherein the brushless motor body comprises a stator assembly, a rotor assembly and a rear cover, a connecting cover with an opening facing the brushless motor body is arranged on a connecting part, an air outlet communicated with an inner cavity is arranged on the side surface of the connecting cover, more than two screw holes are arranged on the end surface of the connecting cover facing the rear cover, and the connecting cover is fixedly connected through bolts which penetrate into the connecting holes in a matching way and are screwed into the screw holes in a matching way. The front cover of brushless motor body has been replaced to the connecting cover of ratchet spanner head, makes brushless motor body and ratchet spanner head fixed connection as an organic whole to make its connection structure more firm, still can save cost, save space simultaneously, the air outlet that switches on with the inner chamber is left to the side of connecting cover, when rotor subassembly drove fan impeller and carries out synchronous rotation, forms a large amount of air currents on the wind channel, designs the air outlet, makes complete machine wind channel more reasonable.

Description

Assembling structure of ratchet wrench head and brushless motor
Technical Field
The invention relates to the field of ratchet wrench assembly structures, in particular to an assembly structure of a ratchet wrench head and a brushless motor.
Background
The electric ratchet wrench belongs to a common electric tool, is well known in time and labor saving due to a unique structure, and is widely applied to installation and maintenance engineering of large and medium-sized mechanical equipment and steel structures in the fields of electric power, metallurgy, ships, traffic, buildings, aviation and the like.
With the development of electronic technology, the ratchet wrench with the brush motor can not meet the requirements of users, in the prior art, the electric ratchet wrench is driven by the brush motor, and the electric ratchet wrench driven by the brush motor has the common problems of short service life, low efficiency and small torque.
In addition, in the prior art, a brushless motor is adopted to drive the ratchet wrench, and the problem of heat dissipation exists between the motor and the connection structure of the ratchet wrench head all the time. During operation of the motor, heat is generally accumulated in the motor, between the main control board, the motor and the ratchet wrench head connecting structure, based on the consideration of the overall cost and the overall volume of the product, the existing electric ratchet wrench can not additionally be provided with a heat radiating structure, and the heat radiating effect is poor in the heat radiating mode by arranging a heat radiating fin outside a motor shell, so that a heat radiating channel cannot be formed, heat in the motor, between the motor and the ratchet wrench head connecting structure is difficult to be radiated outwards, and after the motor works for a long time, the heat is accumulated more, so that the normal work of the motor is influenced, and the service life of the electric ratchet wrench is shortened. In addition, the existing motor and the ratchet wrench head are two independent components, the motor needs to be integrally locked and fixed by installing a motor front cover and a motor rear cover, and meanwhile, other fixing structures are required to be additionally arranged between the motor and the ratchet wrench head, so that the space occupied by the motor and the ratchet wrench head after being connected is increased.
Disclosure of Invention
The invention aims to solve the defects and provide an assembling structure of a ratchet wrench head and a brushless motor, which is more stable in structure and can save space and cost.
The object of the invention is achieved by:
the utility model provides an assembled structure of ratchet spanner head and brushless motor, includes the ratchet spanner head and the brushless motor body that links to each other with the ratchet spanner head, and the one end that the brushless motor body was kept away from to the ratchet spanner head is operating portion, and the one end that the ratchet spanner head is close to the brushless motor body is connecting portion, and the brushless motor body includes stator module, rotor module and hou gai, and the back lid is installed and is kept away from the one end periphery of ratchet spanner head at stator module, and stator module electric connection has the phase line, and rotor module passes stator module's center to install respectively at connecting portion and back lid's center through the bearing, be equipped with the connecting cover of opening orientation brushless motor body on the connecting portion, the inside of connecting cover is equipped with the inner chamber, and be equipped with the air outlet that switches on with the inner chamber at the side of connecting cover, the inner chamber is equipped with fan impeller, and fan impeller is fixed to penetrate rotor module, is driven by rotor module and rotates in step, and the terminal surface that the connecting cover is equipped with more than two screw towards the back lid, and the edge of back lid is equipped with more than two and screw holes that correspond with screw position to penetrate the connecting hole and screw, screw hole pair and screw bolt of screw hole are screwed.
Further, a motor controller is arranged on the end face, far away from the ratchet wrench head, of the rear cover, and the motor controller is electrically connected with the phase line.
Further, the end face of the back cover, which is far away from the ratchet wrench head, is provided with an air inlet, and a cooling fin is further arranged between the back cover and the motor controller and clamped between the back cover and the motor controller.
The motor controller is arranged on the rear end face of the rear cover, so that the installation space of a product is effectively reduced, the motor and the driving are integrated, meanwhile, the fan impeller is driven by the rotor assembly to synchronously rotate, and the rotor assembly drives the fan impeller to rotate when the motor is electrified and works because the fan impeller, the motor controller and the motor are arranged on the same air channel, a large amount of air flow is formed on the air channel, the heat dissipation problem of the motor inside and the motor controller can be solved simultaneously, the overall working efficiency of the motor is improved, the heat dissipation cost of other motors is reduced, and the service life of the motor is prolonged.
Further, the terminal surface of back lid is equipped with the reference column that two above perpendicular orientation was kept away from ratchet spanner head direction and extends, and the edge card of fin is fixed on the reference column to be equipped with the locating hole corresponding with the reference column position on the motor controller to lock the motor controller through the screw and fix.
Further, the outer side face of back lid is equipped with the line protection groove of being convenient for the orderly arrangement of phase line, and motor controller's edge is equipped with the wiring opening corresponding with line protection groove position, and the phase line draws forth the back and carries out neat wiring along the line protection groove respectively, and the phase line extends to the wiring opening and carries out electric welding with motor controller.
Furthermore, the wire protection groove is formed by three wire grooves, the three wire grooves are orderly arranged, and the three wire grooves are respectively used for accommodating different phase lines.
When manufacturing the motor, the phase line is directly drawn forth, then regularly lay wire along the wire protecting groove respectively, finally carry out electric welding with the motor controller, make motor and motor controller form an organic wholely after the welding, compare with the manufacturing mode of traditional brushless motor external drive board, can significantly reduce the manufacturing procedure of product, thereby effectively reduce manufacturing cost, in addition, the phase line is regularly arranged along the wire protecting groove, finally welded fastening with the motor controller, can improve the reliability and the stability of motor greatly, can effectively protect the phase line, more be convenient for pack, transport and assemble, the motor controller sets up in the rear end face of back lid, effectively reduce the installation space of product, realize motor and drive integration.
Further, the four air outlets are arranged in total, and the four air outlets are distributed on the four sides of the connecting cover at equal intervals.
The beneficial effects of the invention are as follows: the front cover of brushless motor body has been replaced to the connection lid of ratchet spanner head, simultaneously, carry out fixed connection through the bolt of mating screw between back lid and the connection lid, make brushless motor body and ratchet spanner head fixed connection as an organic whole, thereby make its connection structure more firm, simultaneously still can save the cost, save space, in addition, the fan impeller sets up in the inner chamber of connection lid, and the side of connection lid is left the air outlet that switches on with the inner chamber, when rotor subassembly drives fan impeller and carries out synchronous rotation, form a large amount of air currents on the wind channel, design air outlet, make complete machine wind channel more reasonable, it is more smooth and easy to exhaust, can solve the inside radiating problem of ratchet spanner head and brushless motor body simultaneously, in order to improve the holistic work efficiency of brushless motor body, reduce the heat dissipation cost of other brushless motor bodies, the life of extension brushless motor body.
Drawings
FIG. 1 is a schematic perspective view of an assembled structure of a ratchet wrench head and a brushless motor according to the present invention;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1A;
FIG. 3 is a schematic perspective view of an assembled structure of a ratchet wrench head and a brushless motor according to another embodiment of the present invention;
FIG. 4 is an exploded view of the assembled structure of the ratchet wrench head and the brushless motor of the present invention;
FIG. 5 is an exploded view of an alternative angle of the assembled structure of the ratchet wrench head and brushless motor of the present invention;
FIG. 6 is a schematic perspective view of a ratchet wrench head in an assembled structure of the ratchet wrench head and a brushless motor according to the present invention;
in the figure, 1-ratchet spanner head, 101-operating part, 102-connecting part, 103-connecting cover, 104-air outlet, 105-screw hole, 2-back cover, 3-rotor assembly, 4-stator assembly, 5-fan impeller, 6-motor controller, 7-cooling fin, 8-bolt, 9-reference column, 10-screw, 11-phase line, 12-wire protecting slot.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
Referring to fig. 1 and 6, the assembled structure of a ratchet wrench head and a brushless motor specifically implemented by the present embodiment includes a ratchet wrench head 1 and a brushless motor body connected with the ratchet wrench head 1, wherein one end of the ratchet wrench head 1, which is far away from the brushless motor body, is an operation portion 101, one end of the ratchet wrench head 1, which is close to the brushless motor body, is a connection portion 102, a connection cover 103 with an opening facing the brushless motor body is provided on the connection portion 102, an inner cavity is provided in the connection cover 103, and an air outlet 104 conducted with the inner cavity is provided on a side surface of the connection cover 103, four air outlets 104 in this embodiment are provided in total, and four air outlets 104 are equidistantly distributed on four side surfaces of the connection cover 103.
The brushless motor body comprises a stator assembly 4, a rotor assembly 3 and a rear cover 2, wherein the rear cover 2 is arranged on the periphery of one end, far away from the ratchet wrench head 1, of the stator assembly 4, phase lines 11 are electrically connected to the stator assembly 4, three phase lines 11 are arranged in total, correspond to three phase lines of the motor respectively, and are a fire wire, a ground wire and a zero wire respectively. The rotor assembly 3 passes through the center of the stator assembly 4 and is mounted to the centers of the connection part 102 and the rear cover 2 through bearings, respectively. The inner chamber is equipped with fan wheel 5, and fan wheel 5 is fixed penetrates rotor subassembly 3, drives by rotor subassembly 3 and rotates in step, and the terminal surface of connecting cover 103 towards back lid 2 is equipped with four screw 105, and the edge of back lid 2 is equipped with four connecting holes corresponding with screw 105 position to pass through four pairs and penetrate the connecting hole and pair screw bolt 8 of screw 105 and carry out fixed connection. The brushless motor body is as an organic whole with ratchet spanner head 1 fixed connection to make its connection structure more firm, simultaneously still can save cost, save space, in addition, when rotor subassembly 3 drives fan impeller 5 and rotates in step, forms a large amount of air currents on the wind channel, designs air outlet 104, makes complete machine wind channel more reasonable, and it is more smooth and easy to exhaust, can solve the inside heat dissipation problem of ratchet spanner head 1 and brushless motor body simultaneously, with the holistic work efficiency of improvement brushless motor body, reduce the heat dissipation cost of other brushless motor bodies, the life of extension brushless motor body.
The end face of the rear cover 2 far away from the ratchet wrench head 1 is provided with a motor controller 6, and the motor controller 6 is electrically connected with a phase line 11. The end face of the back cover 2, which is far away from the ratchet wrench head 1, is provided with an air inlet, a cooling fin 7 is further arranged between the back cover 2 and the motor controller 6, and the cooling fin 7 is clamped between the back cover 2 and the motor controller 6. The radiating fins 7 are used for radiating the motor controller 6, the fan impeller 5 is driven by the rotor assembly 3 to synchronously rotate, and as the fan impeller 5, the motor controller 6, the air outlet 104 and the motor are arranged on the same air channel, the rotor assembly 3 drives the fan impeller 5 to rotate when the motor is electrified to work, a large amount of air flow is formed on the air channel, the radiating problems of the motor inside and the motor controller 6 can be solved simultaneously, the overall working efficiency of the motor is improved, the radiating cost of other motors is reduced, and the service life of the motor is prolonged.
The end face of the rear cover 2 is provided with four positioning columns 9 which extend vertically away from the ratchet wrench head 1, the edges of the radiating fins 7 are clamped on the positioning columns 9 to be fixed, the motor controller 6 is provided with positioning holes corresponding to the positions of the positioning columns 9, and the motor controller 6 is locked and fixed through four screws 10. In addition, the outer side surface of the rear cover 2 is provided with a wire protection groove 12 which is convenient for the orderly arrangement of the phase wires 11, the wire protection groove 12 is formed by three wire grooves, the three wire grooves are orderly arranged, and the three wire grooves are respectively used for accommodating the phase wires 11 corresponding to different phases and respectively correspond to the fire wire, the ground wire and the zero wire. The edge of the motor controller 6 is provided with wiring openings corresponding to the positions of the wire protection grooves 12, the phase wires 11 are led out and then are orderly wired along the wire protection grooves 12, and the phase wires 11 extend to the wiring openings and are electrically welded with the motor controller 6. The phase line 11 is directly led out, so that the motor and the motor controller 6 are integrated after being welded, compared with the manufacturing mode of the traditional brushless motor external driving plate, the manufacturing process of products can be greatly reduced, thereby effectively reducing the manufacturing cost, the phase line 11 is orderly distributed along the wire protection groove 12, finally the phase line 11 is welded and fixed with the motor controller 6, the reliability and the stability of the motor can be greatly improved, the phase line 11 can be effectively protected, the motor controller 6 is more convenient to package, transport and assemble, the installation space of the products is effectively reduced, and the motor and the driving integration are realized.
The foregoing is a further detailed description of the invention in connection with specific preferred embodiments, and is not intended to limit the practice of the invention to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the spirit of the invention, and the scope of the invention is to be considered as the scope of the invention.

Claims (7)

1. The utility model provides an assembled structure of ratchet spanner head and brushless motor, including the ratchet spanner head and the brushless motor body that links to each other with the ratchet spanner head, the one end that the brushless motor body was kept away from to the ratchet spanner head is operating portion, and the one end that the ratchet spanner head is close to the brushless motor body is connecting portion, and the brushless motor body includes stator module, rotor subassembly and back lid, and the back lid is installed and is kept away from the one end periphery of ratchet spanner head at stator module, and stator module electric connection has the phase line, and rotor subassembly passes stator module's center to install respectively at connecting portion and back lid's center through the bearing, its characterized in that: the connecting part is provided with a connecting cover with an opening facing the brushless motor body, an inner cavity is arranged in the connecting cover, an air outlet communicated with the inner cavity is arranged on the side face of the connecting cover, a fan impeller is arranged in the inner cavity, the fan impeller is fixedly penetrated into a rotor assembly, the rotor assembly drives the rotor assembly to synchronously rotate, the end face of the connecting cover facing the rear cover is provided with more than two screw holes, the edge of the rear cover is provided with more than two connecting holes corresponding to the screw hole positions, and the connecting holes are fixedly connected by the bolts which penetrate into the connecting holes in a matched mode and are screwed into the screw holes in a matched mode.
2. The assembly structure of the ratchet wrench head and the brushless motor according to claim 1, wherein: the end face of the rear cover, which is far away from the ratchet wrench head, is provided with a motor controller, and the motor controller is electrically connected with the phase line.
3. The assembly structure of the ratchet wrench head and the brushless motor according to claim 2, wherein: the end face of the rear cover, which is far away from the ratchet wrench head, is provided with an air inlet, and a cooling fin is further arranged between the rear cover and the motor controller and clamped between the rear cover and the motor controller.
4. The assembly structure of the ratchet wrench head and the brushless motor according to claim 3, wherein: the end face of the rear cover is provided with more than two positioning columns which extend vertically away from the ratchet wrench head, the edges of the radiating fins are clamped on the positioning columns to be fixed, and the motor controller is provided with positioning holes corresponding to the positions of the positioning columns and locked and fixed through screws.
5. The assembly structure of a ratchet wrench head and a brushless motor according to any one of claims 1-4, wherein: the outer side face of back lid is equipped with the wire casing of being convenient for the orderly arrangement of phase line, and motor controller's edge is equipped with the wiring opening corresponding with wire casing position, and the phase line draws forth the back and carries out orderly wiring along the wire casing respectively, and the phase line extends to the wiring opening and carries out electric welding with motor controller.
6. The assembly structure of the ratchet wrench head and the brushless motor according to claim 5, wherein: the wire protection groove is composed of three wire grooves, the three wire grooves are arranged in order, and the three wire grooves are used for accommodating corresponding different phase lines respectively.
7. The assembly structure of a ratchet wrench head and a brushless motor according to any one of claims 1-4, wherein: the air outlets are four in number, and the four air outlets are distributed on four sides of the connecting cover at equal intervals.
CN202211704453.3A 2022-12-29 2022-12-29 Assembling structure of ratchet wrench head and brushless motor Pending CN116191770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211704453.3A CN116191770A (en) 2022-12-29 2022-12-29 Assembling structure of ratchet wrench head and brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211704453.3A CN116191770A (en) 2022-12-29 2022-12-29 Assembling structure of ratchet wrench head and brushless motor

Publications (1)

Publication Number Publication Date
CN116191770A true CN116191770A (en) 2023-05-30

Family

ID=86435695

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211704453.3A Pending CN116191770A (en) 2022-12-29 2022-12-29 Assembling structure of ratchet wrench head and brushless motor

Country Status (1)

Country Link
CN (1) CN116191770A (en)

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