CN210898830U

CN210898830U - Electric tool

Info

Publication number: CN210898830U
Application number: CN201922296907.8U
Authority: CN
Inventors: 史梦杰; 王兜石; 谢懿; 孙中华; 闵国庆
Original assignee: Changzhou Globe Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-06-30
Anticipated expiration: 2029-12-19

Abstract

The utility model provides an electric tool, which comprises an operation mechanism, a connecting rod and a power mechanism, wherein the operation mechanism, the connecting rod and the power mechanism drive the operation mechanism to work are sequentially arranged along the longitudinal direction; the power mechanism comprises a circuit board, a motor, a battery pack for supplying power to the motor and a shell for accommodating the circuit board, the motor and the battery pack; the motor and the battery pack are arranged along the longitudinal direction, and the motor is positioned between the battery pack and the connecting rod; the circuit board is positioned at the bottom of the motor; the casing is provided with fresh air inlet and exhaust vent, the fresh air inlet is located the minimum of casing. Compared with the prior art, the utility model discloses electric tool's circuit board, motor and battery package three position arrange compact reasonable to its inside air flow wind channel is favorable to circuit board, motor heat dissipation, has promoted user's use and has experienced.

Description

Electric tool

Technical Field

The utility model relates to a hand-held type electric tool.

Background

A hand-held power tool generally includes a working mechanism, a power mechanism for driving the working mechanism to work, and a connecting rod for connecting the working mechanism and the power mechanism, for example: pruners, mowers, pole saws, and the like. The prior art discloses a hand-held electric tool, including the equipment that is used for carrying out the electric tool function, do the equipment that provides power and connect equipment that equipment and power device's connecting device, equipment, connecting device, power device set gradually along vertically. The power device comprises a motor and a battery pack arranged on one side of the motor, and the motor and the battery pack are transversely arranged. So set up, not only make power device length in the horizontal is longer, make moreover power device's focus is far away from the user to make the user comparatively hard when operating hand-held type electric tool. Secondly, the position of motor, circuit board and battery package of current handheld electric tool arranges not compactly for the fuselage is great, and its inside air flow wind channel is unfavorable for circuit board, motor heat dissipation.

In view of the above problems, there is a need for a new power tool to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric tool, this electric tool's motor, battery package are along vertical setting to not only make power unit length in horizontal is shorter, make power unit's focus press close to the user moreover, thereby it is comparatively laborsaving when making the user use, promoted user's use and experienced. Secondly, the motor, the circuit board and the battery pack are reasonably arranged, the internal structure of the shell is compact, and the air flowing channel in the shell is favorable for heat dissipation of the circuit board and the motor.

In order to achieve the purpose, the utility model provides an electric tool, which comprises an operation mechanism, a connecting rod and a power mechanism, wherein the operation mechanism, the connecting rod and the power mechanism are sequentially arranged along the longitudinal direction; the power mechanism comprises a circuit board, a motor, a battery pack for supplying power to the motor and a shell for accommodating the circuit board, the motor and the battery pack; the motor and the battery pack are arranged along the longitudinal direction, and the motor is positioned between the battery pack and the connecting rod; the circuit board is positioned at the bottom of the motor; the casing is provided with fresh air inlet and exhaust vent, the fresh air inlet is located the minimum of casing.

As a further improvement of the present invention, the length of the battery pack in the horizontal direction is smaller than the length of the battery pack in the vertical direction.

As a further improvement of the utility model, the battery package is the slope setting, makes the battery package towards the lateral wall of motor with contained angle between the axis of connecting rod is the acute angle.

As a further improvement of the present invention, the housing is provided with a motor groove for accommodating the motor, a circuit board groove for accommodating the circuit board, and a partition plate between the motor groove and the circuit board groove.

As a further improvement of the present invention, the housing includes a top wall, a bottom wall disposed opposite to the top wall, and a side wall located between the top wall and the bottom wall; the air inlet hole is positioned on the bottom wall and is communicated with the circuit board groove; the air outlet hole is positioned on the side wall and communicated with the motor groove.

As a further improvement of the present invention, the motor is provided with fan blades; when the flabellum during operation, outside air current certainly the fresh air inlet gets into the circuit board groove to the flow through behind circuit board, the motor, certainly the exhaust vent flows out.

As a further improvement of the present invention, a heat dissipating element is provided on a side of the circuit board facing the air inlet.

As a further improvement of the utility model, the power mechanism further comprises a shell, and the shell is provided with a battery jar for accommodating the battery pack; and an included angle between the inserting direction of the battery pack into the battery groove and the axial direction of the connecting rod is an obtuse angle.

As a further improvement of the utility model, the side wall of the shell is provided with a release button matched with the battery pack; when the release button is pressed, the battery pack can slide along the battery groove under the action of external force.

The utility model has the advantages that: the utility model discloses electric tool's motor, battery package are along vertical setting to not only make power unit length in horizontal ascending is shorter, make power unit's focus press close to the user moreover, thereby it is comparatively laborsaving when making the user use, promoted user's use and experienced. Secondly, motor, circuit board and battery package three position arrange rationally, and casing inner structure is compact to its inside air flow wind channel is favorable to motor, circuit board heat dissipation.

Drawings

Fig. 1 is a schematic perspective view of the electric power tool of the present invention.

Fig. 2 is a perspective view of the power mechanism.

Fig. 3 is a perspective view of the power mechanism of fig. 2 at another angle.

Fig. 4 is a schematic view of the internal structure of the power mechanism shown in fig. 2.

Fig. 5 is a schematic view of the internal structure of the housing.

Fig. 6 is a perspective view of the battery pack.

Fig. 7 is a schematic diagram of relative positions of the connecting rod, the motor and the battery pack.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, the present invention discloses an electric tool 100, which includes an operating mechanism 10 for executing the functions of the electric tool 100, a power mechanism 20 for driving the operating mechanism 10 to operate, and a connecting mechanism 30 for connecting the operating mechanism 10 and the power mechanism 20. The operation mechanism 10, the connection mechanism 30 and the power mechanism 20 are sequentially arranged along the longitudinal direction AA.

Referring to fig. 1, the working mechanism 10 includes a working element 11. In the present embodiment, the working element 11 is a grass cord. However, it is to be understood that the working element 11 is not limited to a grass rope. For example, the working element 11 may also be a blade for a brush cutter, a blade for performing an edging function, or the like. The present invention is not limited to the specific structure of the working element 11.

Referring to fig. 1, the connecting mechanism 30 includes a connecting rod 31 and a transmission assembly (not shown). The connecting rod 31 is hollow, one end of the connecting rod is connected with the operating mechanism 10, and the other end of the connecting rod is connected with the power mechanism 20. An auxiliary handle 311 and an operation assembly 312 are disposed on one side of the connection rod 31 close to the power mechanism 20. The auxiliary handle 311 is arranged in a transverse direction BB perpendicular to the longitudinal direction AA, and the operating assembly 312 further comprises a switch, a brake, and the like. The transmission assembly is arranged in the connecting rod 31 and is matched with the operation mechanism 10 and the power mechanism 20, so that the power output by the power mechanism 20 is transmitted to the operation mechanism 10 to drive the operation mechanism 10 to work. The auxiliary handle 311, the operation component 312 and the transmission component are all the prior art, and the utility model discloses not repeated in detail one by one to this.

Referring to fig. 2, 3 and 4, the power mechanism 20 includes a motor 21, a battery pack 22 for providing power to the motor 21, a circuit board 23 for controlling the motor 21 and the battery pack 22, and a housing 24, wherein the motor 21, the battery pack 22 and the circuit board 23 are accommodated in the housing 24. referring to fig. 4, the motor 21 and the battery pack 22 are disposed along a longitudinal direction AA, and the motor 21 is disposed between the battery pack 22 and the connecting rod 31. one end of the motor 21 is provided with an output shaft 211 for cooperating with the transmission assembly, and the other end is provided with a fan blade 212. the fan blade 212 can be driven by the motor 21. the battery pack 22 is disposed on a side of the motor 21 away from the connecting rod 31. the length of the battery pack 22 in a transverse direction BB is less than the length of the battery pack 22 in a vertical direction CC, such that the battery pack 22 is flat-shaped, such that the width dimension of the housing 24 in the transverse direction BB can be reduced, such that when the user operates the power mechanism 100, the center of gravity of the power mechanism 20 is closer to the user, thereby making the user more labor-saving the user's body, enhancing the experience, and avoiding the user's experience of using the battery pack 221 by holding the battery pack, such that the battery pack is disposed at an acute angle with the battery pack 357, such that the battery pack is disposed between the battery pack 22 is more easily oriented when the user's axis 3522 is oriented when the user's holding the battery pack 100 is oriented to the user's side, such that the user's holding the battery pack.

Referring to fig. 4, the circuit board 23 is disposed at the bottom of the motor 21 with the glue-pouring surface facing downward, that is: the glue-pouring surface of the circuit board 23 faces away from the motor 21. So set up, can effectively promote circuit board 23's water-proof effects. A heat dissipation element 231 is further disposed on a side of the circuit board 23 away from the motor 21, so as to improve a heat dissipation effect of the circuit board 23.

Referring to fig. 5, 2 and 3, the housing 24 includes a top wall 241, a bottom wall 242 opposite to the top wall 241, and a side wall 243 between the top wall 241 and the bottom wall 242, the top wall 241, the bottom wall 242, and the side wall 243 together enclose a receptacle (not numbered) for receiving the motor 21, the battery pack 22, and the circuit board 23, the receptacle includes a motor compartment 251 for receiving the motor 21, a battery compartment 252 for receiving the battery pack 22, and a circuit board compartment 253 for receiving the circuit board 23, the bottom wall 242 is provided with air inlet holes 2421 in communication with the circuit board compartment 253, the heat dissipation member 231 faces the air inlet holes 2421, preferably, the air inlet holes 2421 are located at the lowest point of the bottom wall 242, the air inlet holes 2421 are preferably water outlet holes, when the power tool 100 is in a rain environment, the rain water inlet holes 2421 are preferably at the same time, when the power tool 100 is in the rain environment, the rain water outlet holes 2421 are preferably also the best water outlet holes, when the power tool 100 is in the rain environment, the rain water seeps into the housing 24 collects at the lowest point of the air inlet housing 24 under the gravity, so that the air inlet holes 2421 of the fan compartment 24 is able to flow through the fan compartment 252 when the fan outlet holes β 4 is properly positioned, so that the fan outlet holes 2421 is properly positioned to be in communication with the fan compartment 2423 when the fan compartment 252, so that the fan compartment 252 when the fan compartment 252 is positioned, the fan compartment 252 is positioned to cause the fan compartment 252 to be fully engaged with the fan compartment 252, so that the fan compartment 252 when the fan compartment 252 to be fully engaged with the fan compartment 252, the fan compartment 252 to be fully engaged with the fan compartment 252 to cause the fan compartment 252 to be inserted into the fan compartment 252 to cause the fan compartment 23, the fan compartment 252 to be fully engaged with the fan compartment 252 to be inserted into the fan compartment 23, so that the fan compartment 252 to be fully engaged with the fan compartment 252 to cause the fan compartment 23, the fan compartment 252 to cause the fan compartment 252 to be fully engaged with the fan compartment 23, the fan compartment 252 to cause the fan compartment.

Compared with the prior art, the utility model discloses electric tool 100's motor 21, battery jar 252 are along vertical setting to not only make power unit 20 is shorter in horizontal ascending length, makes moreover power unit 20's focus is pressed close to the user, thereby makes when the user uses comparatively laborsaving, has promoted user's use and has experienced. Secondly, the motor 21, the circuit board 23 and the battery pack 22 are reasonably arranged, the inner structure of the shell 24 is compact, and the air flowing channel inside the shell is favorable for heat dissipation of the motor 21 and the circuit board 23.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An electric tool comprises an operation mechanism, a connecting rod and a power mechanism, wherein the operation mechanism, the connecting rod and the power mechanism are sequentially arranged along the longitudinal direction, and the power mechanism drives the operation mechanism to work; the method is characterized in that: the power mechanism comprises a circuit board, a motor, a battery pack for supplying power to the motor and a shell for accommodating the circuit board, the motor and the battery pack; the motor and the battery pack are arranged along the longitudinal direction, and the motor is positioned between the battery pack and the connecting rod; the circuit board is positioned at the bottom of the motor; the casing is provided with fresh air inlet and exhaust vent, the fresh air inlet is located the minimum of casing.

2. The power tool of claim 1, wherein: the length of the battery pack in the transverse direction is smaller than that of the battery pack in the vertical direction.

3. The power tool of claim 1, wherein: the battery package is the slope setting for the battery package towards the lateral wall of motor with the contained angle between the axis of connecting rod is the acute angle.

4. The power tool of claim 1, wherein: the shell is provided with a motor groove for accommodating the motor, a circuit board groove for accommodating the circuit board and a partition plate positioned between the motor groove and the circuit board groove.

5. The power tool of claim 4, wherein: the shell comprises a top wall, a bottom wall arranged opposite to the top wall and a side wall positioned between the top wall and the bottom wall; the air inlet hole is positioned on the bottom wall and is communicated with the circuit board groove; the air outlet hole is positioned on the side wall and communicated with the motor groove.

6. The power tool of claim 5, wherein: the motor is provided with fan blades; when the flabellum during operation, outside air current certainly the fresh air inlet gets into the circuit board groove to the flow through behind circuit board, the motor, certainly the exhaust vent flows out.

7. The power tool of claim 5, wherein: and a heat dissipation element is arranged on one side of the circuit board facing the air inlet.

8. The power tool of claim 1, wherein: the power mechanism further comprises a shell, and the shell is provided with a battery jar for accommodating the battery pack; and an included angle between the inserting direction of the battery pack into the battery groove and the axial direction of the connecting rod is an obtuse angle.

9. The power tool of claim 8, wherein: the side wall of the shell is provided with a release button matched with the battery pack; when the release button is pressed, the battery pack can slide along the battery groove under the action of external force.