CN214560605U

CN214560605U - Electric tool

Info

Publication number: CN214560605U
Application number: CN202120274097.0U
Authority: CN
Inventors: 汪发春
Original assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Current assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2021-11-02
Anticipated expiration: 2031-01-30

Abstract

The utility model discloses an electric tool, which comprises a shell, a motor positioned in the shell and a switch component for controlling the starting and stopping of the motor, wherein the switch component comprises a push button arranged outside the shell, a switch accommodated in the shell and a connecting rod connected between the push button and the switch; a fulcrum is arranged between two ends of the connecting rod, and when the push button moves in a plane perpendicular to the axis of the motor, the connecting rod rotates around the fulcrum, and the push switch starts and stops, so that the electric tool is miniaturized.

Description

Electric tool

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electric tool, in particular to electric tool of cutting or the type of polishing.

[ background of the invention ]

Traditional cutting or the electric tool of the type of polishing utilizes the abrasive disc to polish or polish the work piece, for example angle grinder, has a mainframe shell that sets up along the fore-and-aft direction and sets up perpendicularly in the abrasive disc of mainframe shell below, is equipped with one in the periphery of mainframe shell along the gliding push-button of fore-and-aft direction, pushes away through the promotion and turns round in order to open the switch, and then the motor switch on and drive abrasive disc carry out rotatory operation.

Please refer to the chinese patent publication No. CN104924279A of shentian corporation, which discloses an electric tool, wherein a main housing of the electric tool houses a brushless motor and a switch located at the rear side of the brushless motor, a push button is slidably disposed at the outer side of the main housing in the front-rear direction, a connecting rod is connected to the push button, the connecting rod slides back and forth along the inner surface of the main housing, and when the push button slides back, the connecting rod is driven to move back together and close the switch, thereby stopping driving the brushless motor. The sliding route of the push button and the axis of the motor in the shell are arranged in the same direction, and the push button and the connecting rod need to move back and forth along the length direction of the shell, so that the switch in the patent needs to be pulled away from the brushless motor by a certain distance, the rear end of the connecting rod obtains enough moving distance for extruding the switch, and the length of the shell is increased.

Therefore, it is necessary to design a new electric tool to solve the above problems.

[ Utility model ] content

In order to solve the above problems, the present invention provides an electric tool with simple operation and miniaturization.

In order to solve the technical problem, the utility model adopts the following technical scheme: the switch assembly comprises a push button arranged outside the shell, a switch accommodated in the shell and a connecting rod connected between the push button and the switch, the push button pushes the connecting rod to start and stop the switch, the push button is arranged opposite to the outer side of the motor, an accommodating cavity is arranged between the shell and the motor, the connecting rod is accommodated in the accommodating cavity, and the switch is arranged at the rear side of the motor; a fulcrum is arranged between two ends of the connecting rod, and when the push button moves in a plane perpendicular to the axis of the motor, the connecting rod rotates around the fulcrum and pushes the switch to start and stop.

The further improvement scheme is as follows: the switch assembly comprises a shell, a switch and a switch, wherein the shell is provided with a first barrel part for accommodating the motor and a second barrel part for accommodating the switch, the diameter of the second barrel part is smaller than that of the first barrel part, a slide rail area which extends perpendicular to the axis plane of the motor is arranged at the periphery of the first barrel part of the shell, a push button is slidably mounted on the slide rail area, the switch assembly further comprises a spring, a reset part extends towards the shell in the inner side of the push button, a positioning part is arranged on the slide rail area, and one end of the spring is abutted against the reset part while the other end of the spring is limited on the positioning part.

The further improvement scheme is as follows: one end of the slide rail area along the push-twist sliding direction is provided with a boss protruding along the surface, and the other end of the slide rail area is provided with a blocking part which is arranged downwards and concavely from the surface of the slide rail area; one side of the push button is provided with a hook part clamped with the blocking part, the other side of the push button is provided with a limiting part abutted against the boss, and the push button slides between the blocking part and the boss.

The further improvement scheme is as follows: when the switch stops, the spring pushes the limiting part of the push button to the boss; when the switch is started, the push button compresses the spring, and the hook part of the push button is buckled on the blocking part.

The further improvement scheme is as follows: the rear end of the electric tool is inserted with a battery pack, the switch is provided with a movable pressing part, one end of the pressing part is pivotally connected to the switch, the other end of the pressing part swings up and down relative to the switch, one end of the connecting rod abuts against one end of the pressing part swinging, and when one end of the connecting rod presses the pressing part and starts the switch, the battery pack supplies power to the motor.

The further improvement scheme is as follows: the inner wall of the shell is provided with a supporting pin protruding inwards, and the supporting pin is sleeved with a fulcrum of the connecting rod.

The further improvement scheme is as follows: the push button is provided with a linkage part which penetrates through the shell and extends to the inner cavity of the shell, the front end of the connecting rod is provided with a through groove, and the linkage part penetrates through the through groove and is buckled on the connecting rod.

The further improvement scheme is as follows: the rear end of the connecting rod is provided with a contact part which is turned over towards the center direction of the shell, and the contact part is connected with the switch.

The further improvement scheme is as follows: the electric tool further comprises a transmission mechanism arranged in the machine shell, the motor comprises a stator fixed in the machine shell and a rotor sleeved in the stator, the transmission mechanism comprises a small bevel gear fixed at the front end of the rotor and an output assembly which is connected below the small bevel gear in a meshed mode and perpendicular to the rotor, the output assembly comprises an output shaft supported in the machine shell and a large bevel gear fixed on the output shaft, and the small bevel gear is connected with the large bevel gear in a meshed mode.

The further improvement scheme is as follows: the motor comprises a shell, a stator, a push button, a rotor and an output shaft, wherein the shell comprises a main case, a head case fixed at the front end of the main case and a head case cover fixed at the lower end of the head case, the stator is supported in the main case and is arranged opposite to the push button, the front end of the rotor extends into an inner cavity of the head case and is supported in the head case, and the output shaft is supported in the head case cover and the head case respectively.

Compared with the prior art the utility model discloses following beneficial effect has: the connecting rod is arranged in the accommodating cavity between the shell and the motor and can be connected to the shell in a pivoting manner through the fulcrum, and the push knob is attached to the shell and slides along a plane vertical to the axis of the motor, so that the rotating direction of the push knob is consistent with the holding direction, the human engineering is met, and the operation is convenient; and the push button drives the connecting rod to rotate around the fulcrum, and the push switch is pushed to start and stop, so that the space for moving the traditional connecting rod back and forth is saved, the overall length of the electric tool is shortened, and the miniaturization of the electric tool is facilitated.

[ description of the drawings ]

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

FIG. 2 is a partial perspective view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a sectional view taken along line A of FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 2;

FIG. 6 is an enlarged view of a portion of FIG. 4;

FIG. 7 is a perspective view of the push button of the power tool of the present invention;

fig. 8 is a perspective view of the switch assembly of the electric power tool of the present invention.

[ detailed description ] embodiments

The following further describes a specific embodiment of the present invention with reference to the drawings and examples, wherein the embodiment of the present electric tool is described in detail by taking an angle grinder as an example.

Referring to fig. 1 to 8, an electric tool 100 of the present invention is shown, the electric tool 100 includes a housing 1, a motor 2 located in the housing 1, a transmission mechanism 3 driven by the motor 2, a saw blade connected to the end of the transmission mechanism, a switch assembly 4 for controlling the start and stop of the motor 1, and a battery pack 102 inserted into one end of the housing 1, when the switch assembly 4 is started, the battery pack 102 supplies power to the motor 1, and the motor 1 drives the saw blade 101 to output through the transmission mechanism 3.

The motor 2 comprises a stator 22 fixed in the casing 1 and a rotor 21 sleeved in the stator 22, the output direction of the motor 2 is defined as front, the direction perpendicular to the output direction of the motor 2 is defined as up-down direction, the transmission mechanism 3 comprises a small bevel gear 31 fixed at the front end of the rotor 21 and an output component 32 engaged and connected below the small bevel gear 31 and perpendicular to the rotor 21, the output component 32 comprises an output shaft 321 supported in the casing 1 and a large bevel gear 322 fixed on the output shaft 321, and the small bevel gear 322 and the large bevel gear 322 are engaged and connected with each other. The casing 1 includes a main casing 11, a head casing 14 fixed at the front end of the main casing 11, and a head casing cover 13 fixed at the lower end of the head casing 14, the stator 22 is supported in the main casing 11, the front end of the rotor 21 extends into the inner cavity of the head casing 14 and is supported in the head casing 14, and the output shaft 321 is supported in the head casing cover 13 and the head casing 14, respectively. The main housing 11 has a first cylindrical portion 11a for accommodating the motor 2 and a second cylindrical portion 11b for accommodating the switch 42, the second cylindrical portion 11b has a smaller diameter than the first cylindrical portion 11a, and the second cylindrical portion 11b includes a transition portion between the first cylindrical portion 11a and the second cylindrical portion 11 b.

Referring to fig. 5 to 8, the switch assembly 4 includes a push button 41 disposed outside the main housing 11, a spring 44 for pushing against the push button 41, a switch 42 accommodated in the main housing 11, and a connecting rod 43 connecting the push button 41 and the switch 42, wherein the push button 41 pushes the connecting rod 43 to start and stop the switch 42.

The push button 41 is arranged at the outer side of a first barrel part 11a corresponding to the motor 2, a slide rail area 13 extending perpendicular to the axial plane of the motor 2 is arranged at the periphery of the first barrel part 11a, the push button 41 is slidably mounted on the slide rail area 13, a reset part 41d is protruded from the inner side of the push button 41 towards the casing 1, a positioning part 13c extending along the sliding direction of the push button 41 is arranged on the slide rail area 13, one end of the spring 44 abuts against the reset part 41d, and the other end of the spring is limited on the positioning part 13c, the positioning part 13c in the embodiment is formed by a cylinder body of which the slide rail area 13 is turned upwards and then to the side edge, the spring 44 is sleeved on the positioning part 13c, and the spring can be a clamping groove or other structures for limiting the spring in other embodiments; the sliding rail area 13 is provided with a boss 13b protruding along the surface at one end along the sliding direction of the push button 41, the other end is provided with a blocking part 13a recessed downwards from the surface of the sliding rail area 13, one side of the push button 41 is provided with a hook part 41b clamped with the blocking part 13a, the other side is provided with a limiting part 41c abutted against the boss 13b, and the push button 41 slides between the blocking part 13a and the boss 13 b. When the switch 42 stops, the spring 44 presses the limiting part 41c of the push button 41 against the boss 13 b; when the switch 42 is activated, the push button 41 compresses the spring 44 and the hook 41b of the push button 41 is locked to the stopper 13 a.

Referring to fig. 3 and 8, an accommodating cavity is disposed between the main chassis 11 and the motor 2, and the connecting rod 41 is accommodated in the accommodating cavity; the host computer shell 11 is equipped with the through-hole, it is equipped with the run-through to push away to turn round 41 and extend to the linkage portion 41a of the host computer shell 11 inner chamber, just the end of linkage portion 41a has the spacing hook that turns over to the side, the front end of connecting rod 41 is equipped with and link up groove 43c, linkage portion 41a passes link up groove 43c and detain through spacing hook and hold in on the connecting rod 43, the length of connecting rod 43 far exceeds the maximum width of through-hole 12, will have linkage portion 41a to detain and be favorable to the anti-thrust to prevent turning round 41 and coming off from the host computer shell 11 shell on the connecting rod 43. The rear end of the connecting rod 43 is provided with a contact part 43b which is folded towards the center direction of the machine shell 1, the switch 42 is installed behind the motor 2, the switch 42 is provided with a movable pressing part 42a, one end of the pressing part 42a is pivotally connected to the switch 42, the other end of the pressing part 42a swings up and down relative to the switch 42, and the contact part 43b of the connecting rod 43 is pressed against one end of the pressing part 42a which swings. Be equipped with fulcrum 43a between the connecting rod 43 both ends, the inner wall of host computer shell 11 is equipped with the supporting pin 12 of stretching to host computer shell 11 center protrusion, fulcrum 43a of connecting rod 43 is located for the cover through-hole on the supporting pin 12, push and turn round 41 and laminate in host computer shell 11 and slide along the plane of perpendicular to 2 axes of motor, push and turn round 41 linkage portion 41a drive connecting rod 43 and make rotary motion around fulcrum 43a to the top pushes up switch 42 makes and stops the action.

In the electric tool 100 of the present invention, the connecting rod 43 is disposed in the accommodating cavity between the housing 1 and the motor 2, and the connecting rod 43 is pivotally connected to the housing 1 through the fulcrum 43a, and the push button 41 is attached to the housing 1 and slides along the plane perpendicular to the axis of the motor 2, so that the rotation direction of the push button 41 is consistent with the hand-holding direction, which is in accordance with ergonomics and is convenient for operation; and the push button 41 drives the connecting rod 43 to rotate around the fulcrum 43a and pushes the switch 42 to start and stop, so that the space for moving the traditional connecting rod 43 back and forth is saved, the overall length of the electric tool 100 is shortened, and the miniaturization of the electric tool 100 is facilitated.

Claims

1. An electric tool comprises a machine shell, a motor and a switch assembly, wherein the motor is positioned in the machine shell, the switch assembly controls the start and stop of the motor, the switch assembly comprises a push button arranged outside the machine shell, a switch accommodated in the machine shell and a connecting rod connected between the push button and the switch, the push button pushes the connecting rod to start and stop the switch, the push button is arranged opposite to the outer side of the motor, an accommodating cavity is arranged between the machine shell and the motor, the connecting rod is accommodated in the accommodating cavity, and the switch is arranged on the rear side of the motor; the method is characterized in that: a fulcrum is arranged between two ends of the connecting rod, and when the push button moves in a plane perpendicular to the axis of the motor, the connecting rod rotates around the fulcrum and pushes the switch to start and stop.

2. The power tool of claim 1, wherein: the switch assembly comprises a shell, a switch and a switch, wherein the shell is provided with a first barrel part for accommodating the motor and a second barrel part for accommodating the switch, the diameter of the second barrel part is smaller than that of the first barrel part, a slide rail area which extends perpendicular to the axis plane of the motor is arranged at the periphery of the first barrel part of the shell, a push button is slidably mounted on the slide rail area, the switch assembly further comprises a spring, a reset part extends towards the shell in the inner side of the push button, a positioning part is arranged on the slide rail area, and one end of the spring is abutted against the reset part while the other end of the spring is limited on the positioning part.

3. The power tool of claim 2, wherein: one end of the slide rail area along the push-twist sliding direction is provided with a boss protruding along the surface, and the other end of the slide rail area is provided with a blocking part which is arranged downwards and concavely from the surface of the slide rail area; one side of the push button is provided with a hook part clamped with the blocking part, the other side of the push button is provided with a limiting part abutted against the boss, and the push button slides between the blocking part and the boss.

4. The power tool of claim 3, wherein: when the switch stops, the spring pushes the limiting part of the push button to the boss; when the switch is started, the push button compresses the spring, and the hook part of the push button is buckled on the blocking part.

5. The power tool of claim 4, wherein: the rear end of the electric tool is inserted with a battery pack, the switch is provided with a movable pressing part, one end of the pressing part is pivotally connected to the switch, the other end of the pressing part swings up and down relative to the switch, one end of the connecting rod abuts against one end of the pressing part swinging, and when one end of the connecting rod presses the pressing part and starts the switch, the battery pack supplies power to the motor.

6. The power tool of claim 1, wherein: the inner wall of the shell is provided with a supporting pin protruding inwards, and the supporting pin is sleeved with a fulcrum of the connecting rod.

7. The power tool of claim 1, wherein: the push button is provided with a linkage part which penetrates through the shell and extends to the inner cavity of the shell, the front end of the connecting rod is provided with a through groove, and the linkage part penetrates through the through groove and is buckled on the connecting rod.

8. The power tool of claim 7, wherein: the rear end of the connecting rod is provided with a contact part which is turned over towards the center direction of the shell, and the contact part is connected with the switch.

9. The power tool of claim 1, wherein: the electric tool further comprises a transmission mechanism arranged in the machine shell, the motor comprises a stator fixed in the machine shell and a rotor sleeved in the stator, the transmission mechanism comprises a small bevel gear fixed at the front end of the rotor and an output assembly which is connected below the small bevel gear in a meshed mode and perpendicular to the rotor, the output assembly comprises an output shaft supported in the machine shell and a large bevel gear fixed on the output shaft, and the small bevel gear is connected with the large bevel gear in a meshed mode.

10. The power tool of claim 9, wherein: the motor comprises a shell, a stator, a push button, a rotor and an output shaft, wherein the shell comprises a main case, a head case fixed at the front end of the main case and a head case cover fixed at the lower end of the head case, the stator is supported in the main case and is arranged opposite to the push button, the front end of the rotor extends into an inner cavity of the head case and is supported in the head case, and the output shaft is supported in the head case cover and the head case respectively.