CN213197392U

CN213197392U - Electric tool

Info

Publication number: CN213197392U
Application number: CN202021644737.4U
Authority: CN
Inventors: 杨远作; 余仁田; 柯亨钊
Original assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Current assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-05-14
Anticipated expiration: 2030-08-10

Abstract

The utility model provides an electric tool, including casing, drive line unit, output end effector and control circuit, the drive line unit sets up in the casing, output end effector is connected to the drive line unit, control circuit control electric power is carried from the power the drive line unit, the drive line unit includes motor, gear box, mount and locates change-speed gear group in the gear box, the mount includes an at least accommodation space, motor and/or the gear box is fixed to be set up in the mount, the motor is connected to change-speed gear group. The utility model discloses an electric tool makes a whole with the drive line unit for electric tool can assemble the drive line unit with the casing equipment earlier when the assembly, has improved assembly efficiency, has improved electric tool's steadiness simultaneously.

Description

Electric tool

Technical Field

The utility model relates to a wireless instrument field, in particular to electric tool.

Background

The electric tool is a hand-held or movable mechanical tool which takes a motor or an electromagnet as power and drives a working head to work through a transmission mechanism. The electric tool has the characteristics of convenience in carrying, simplicity in operation, various functions and the like, can greatly reduce the labor intensity, improve the working efficiency and realize manual operation mechanization, so that the electric tool is widely applied to the fields of buildings, house decoration, automobiles, machinery, electric power, bridges, gardening and the like and can enter families in a large quantity.

The mounting mode of the existing electric tool is that the limiting ribs are arranged in the shell, and then parts such as the motor and the transmission are fixed in the shell through the limiting ribs in sequence, but the mounting mode is complex in operation, low in efficiency and low in mounting firmness.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric tool, this electric tool is together fixed with the drive line unit in the casing, can install the drive line unit assembly again in the casing earlier when the assembly, has improved assembly efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a power tool comprising a housing, a drive train unit disposed in the housing, an output end effector connected to the drive train unit, and a control circuit controlling the delivery of electrical power from a power source to the drive train unit, wherein the drive train unit comprises a motor disposed within the motor housing and connected to a speed change gear set, a gear box, and a speed change gear set disposed within the gear box, the motor housing fixedly connected with the gear box.

Further, the motor cover comprises an accommodating space, and the motor is fixedly arranged in the accommodating space.

Furthermore, positioning holes are formed in the motor cover and the gear box and are used for inserting positioning pins, and the positioning pins are used for fixing the motor cover and the gear box together.

Further, the motor cover and the gear box are provided with a groove and/or a protrusion at the joint, the protrusion is embedded into the groove, and the motor cover and the gear box are positioned through the matching of the groove and the protrusion.

Further, the housing includes at least a first housing element and at least a second housing element, one end of the power train unit is fixedly connected with the first housing element, and the other end of the power train unit is fixedly connected with the second housing element.

Furthermore, the motor cover is provided with a wire outlet hole, and a motor wire penetrates through the wire outlet hole to be electrically connected with the control circuit.

Furthermore, the motor cover is provided with heat dissipation holes, and the heat dissipation holes are used for dissipating heat of a motor arranged in the motor cover.

Optionally, the motor cover is formed by fixedly connecting at least one first cover body and at least one second cover body.

Optionally, the motor cover is of an integrated structure, and the motor is clamped in the motor cover.

The utility model also provides a similar technical scheme with above-mentioned scheme: an electric tool comprises a shell, a transmission system unit, an output end effector and a control circuit, wherein the transmission system unit is arranged in the shell, the output end effector is connected to the transmission system unit, the control circuit controls electric power to be transmitted to the transmission system unit from a power supply, the transmission system unit comprises a motor, a gear box and a speed change gear set arranged in the gear box, the transmission system unit further comprises a fixing frame, the fixing frame comprises at least one accommodating space, and the motor and the gear box are fixedly arranged in the accommodating space.

Further, in the fixed frame, the motor is connected to the speed change gear set.

Furthermore, the fixing frame is of an integral structure or is formed by fixedly connecting at least two parts.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model discloses a be in the same place motor and derailleur are fixed for electric tool can assemble the transmission unit earlier when the assembly and then in the casing, has improved assembly efficiency, has increased the fastness between transmission unit and the casing simultaneously.

2. The utility model discloses pass through mounting fixed connection with drive line unit and casing, compare in the past through spacing muscle to press and fix each part of drive line unit, each part looses the condition of ground because of losing the restriction suddenly when having avoided dismantling.

Drawings

Fig. 1 is a front view of a schematic diagram one of a power train unit according to an embodiment of the present invention.

Fig. 2 is an isometric view of a schematic view one of the drive train units in an embodiment of the invention.

Fig. 3 is an isometric view of a schematic diagram two of a drive train unit in an embodiment of the invention.

Fig. 4 is an axonometric view of a motor cover schematic diagram i in the embodiment of the present invention.

Fig. 5 is a front view of a motor cover schematic diagram two in an embodiment of the present invention.

Fig. 6 is an axonometric view of the motor cover schematic diagram two in the embodiment of the present invention.

Fig. 7 is a schematic view of a connection of a drive train unit and a first housing element in an embodiment of the invention.

Fig. 8 is a schematic view of a connection of the drive train unit and the second housing element in an embodiment of the invention.

Fig. 9 is a schematic view of a connection of the drive train unit and the second housing element in an embodiment of the invention.

Fig. 10 is a schematic structural diagram of a gear box according to an embodiment of the present invention.

Fig. 11 is a schematic view of a connection relationship between a motor cover and a gear box according to an embodiment of the present invention.

Fig. 12 is a schematic view of a connection relationship between the fixing frame and the motor and the gear box in the embodiment of the present invention.

Fig. 13 is a schematic view of an electric tool according to an embodiment of the present invention.

11-a first housing element; 12-a second housing element; 2-a drive train unit; 21-a motor; 22-motor cover; 23-a gearbox; 3-output end effector; 50-positioning holes; 7-a wire outlet hole; 9-heat dissipation holes; 8, fixing a frame; 6, locking and buckling; 10-a groove; 14-a bump; 13-positioning structure.

Detailed Description

The present invention will now be described in more detail with reference to the accompanying drawings, and it is to be understood that the following description of the present invention is made only by way of illustration and not by way of limitation with reference to the accompanying drawings. The various embodiments may be combined with each other to form other embodiments not shown in the following description.

For convenience of description, the electric tool of the present invention uses an electric drill as an example, but the electric tool may be other tools, such as a sander, a jigsaw, a sander, and an electric hammer; alternatively, the tool may be a garden tool, such as a chain saw, a lawnmower, and a pruner; in addition, the tools may be used for other purposes, such as mixers, cleaners, massagers. As long as the tools internally comprise a motor and a transmission and can convert the output torque into other types of motion tools, the essence of the technical scheme disclosed below can be adopted.

Example 1

The utility model provides an electric tool, this electric tool are lithium electric drill. The power tool includes a housing, a power train unit 2, an output end effector 3, and a control circuit, the power train unit 2 being disposed in the housing, the output end effector 3 being connected to the power train unit 2, the control circuit controlling power delivery from a power source to the power train unit 2, the power train unit 2 including a motor 21, a motor cover 22, a gear box 23, and a speed change gear set provided in the gear box 23, the motor 21 being disposed in the motor cover 22 and connected to the speed change gear set, the motor cover 22 being fixedly connected to the gear box 23.

As shown in fig. 1 to 6, the motor cover 22 includes an accommodating space, and the motor is fixedly disposed in the accommodating space.

As shown in fig. 5-6, the motor cover 22 is formed by fixedly connecting a first cover body and a second cover body, and the first cover body and the second cover body are fixedly connected through a lock catch 6. Of course, the first cover body and the second cover body may also be fixedly connected by other fixing structures, which are not described herein again.

As shown in fig. 3-4, the motor cover 22 is an integral structure, the motor is clamped in the motor cover 22, and the gear box 23 is a boss-shaped integral structure formed by hollow cylinders which are coaxial from top to bottom.

Further, positioning holes 50 are formed in the motor cover 22 and the gear case 23, and positioning pins are inserted into the positioning holes 50 and fix the motor cover 22 and the gear case 23 together.

Further, a positioning structure 13 is arranged at the joint of the motor cover 22 and the gear box 23, the positioning structure 13 comprises a groove 10 and/or a protrusion 14, the protrusion 14 is embedded in the groove 10, and the motor cover 22 and the gear box 23 are positioned by the matching of the groove 10 and the protrusion 14.

Furthermore, the housing comprises at least a first housing element 11 and at least a second housing element 12, one end of the drive train unit 2 is fixedly connected with the first housing element 11, and the other end of the drive train unit 2 is fixedly connected with the second housing element 12; as shown in fig. 7 to 9 and 13, the motor cover 22, the gear box 23, the first housing member 11 and/or the second housing member 12 are provided with threaded holes, the motor cover 22 and the second housing member 12 are fixedly connected by screws, and the gear box 23 and the first housing member 11 are fixedly connected by screws.

Further, the motor cover 22 is provided with a wire outlet hole 7, and a motor wire passes through the wire outlet hole 7 and is electrically connected with the control circuit.

Further, heat dissipation holes 9 are formed in the circumferential direction of the motor cover 22, and the heat dissipation holes 9 are used for dissipating heat of a motor arranged in the motor cover 22; the motor shaft is provided with fan blades for heat dissipation.

Example 2:

as shown in fig. 12, the utility model discloses still provide another drive line unit 2 structure, drive line unit 2 includes motor 21, gear box 23, locates change gear group and mount 8 in the gear box 23, mount 8 includes an at least accommodation space, motor 21 with gear box 23 is fixed to be set up in the accommodation space, motor 21 is connected to change gear group.

The two ends of the fixing frame 8 are respectively and fixedly connected with the first shell element 11 and/or the second shell element 12, and specifically, the fixing frame 8 and the shell elements can be fixedly connected by screws or by a lock catch 6.

And a limiting structure is arranged in the accommodating space of the fixing frame 8 and used for fixing the motor 21 in the accommodating space.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A power tool including a housing, a drive train unit disposed in the housing, an output end effector connected to the drive train unit, and a control circuit that controls delivery of power from a power source to the drive train unit, characterized in that: the drive train unit comprises a motor, a motor cover, a gear box and a speed change gear set arranged in the gear box, wherein the motor is arranged in the motor cover and connected to the speed change gear set, and the motor cover is fixedly connected with the gear box.

2. The power tool of claim 1, wherein: the motor cover comprises an accommodating space, and the motor is fixedly arranged in the accommodating space.

3. The power tool of claim 2, wherein: the motor cover and the gear box are provided with positioning holes, positioning pins are inserted into the positioning holes, and the positioning pins fix the motor cover and the gear box together.

4. The electric tool according to claim 3, wherein the motor cover and the gear case are provided at a joint with a recess and/or a projection, the projection is fitted into the recess, and the motor cover and the gear case are positioned by the engagement of the recess and the projection.

5. The power tool of claim 1, wherein: the housing comprises at least one first housing element and at least one second housing element, one end of the drive train unit is fixedly connected with the first housing element, and the other end of the drive train unit is fixedly connected with the second housing element.

6. The power tool of claim 1, wherein: the motor cover is provided with a wire outlet hole, and a motor wire penetrates through the wire outlet hole to be electrically connected with the control circuit.

7. The power tool of claim 1, wherein: the motor cover is provided with heat dissipation holes, and the heat dissipation holes are used for dissipating heat of a motor arranged in the motor cover.

8. The power tool of claim 1, wherein: the motor cover is formed by fixedly connecting at least one first cover body and at least one second cover body.

9. The power tool of claim 1, wherein: the motor cover is of an integrated structure, and the motor is clamped in the motor cover.

10. A power tool including a housing, a drive train unit disposed in the housing, an output end effector connected to the drive train unit, and a control circuit that controls delivery of power from a power source to the drive train unit, characterized in that: the drive train unit includes motor, gear box, locates change gear group and mount in the gear box, the mount includes an at least accommodation space, the motor with the gear box is fixed to be set up in the accommodation space, the motor is connected to change gear group.