CN212947623U

CN212947623U - Electric tool with prevent unusual start function

Info

Publication number: CN212947623U
Application number: CN202021623424.0U
Authority: CN
Inventors: 陈会甫; 闵新林
Original assignee: Ningbo Hanpu Tools Co ltd
Current assignee: Ningbo Hanpu Tools Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-04-13
Anticipated expiration: 2030-08-06

Abstract

The utility model relates to a handheld electric tool technical field discloses an electric tool with prevent unusual start-up function, including: a machine head and a machine body; the machine head is detachably connected with the machine body, a power piece and a starting switch for controlling the power piece are arranged in the machine body, a button for driving the starting switch is arranged on the machine body, and a through hole is formed in one side, close to the machine head, of the machine body; the locking piece is arranged in the machine body and used for locking the button; the unlocking device is arranged in the machine body and comprises an unlocking piece which is movably arranged in the through hole in a penetrating way; when the handpiece is separated from the machine body, the button is locked by the locking piece; when the handpiece is attached to the body, the handpiece can drive the unlocking member to unlock the button. The utility model has the advantages that the electric tool can effectively prevent abnormal starting, has high safety performance and saves energy; the structural stability is high.

Description

Electric tool with prevent unusual start function

Technical Field

The utility model relates to a handheld electric tool technical field especially relates to an electric tool with prevent unusual start-up function.

Background

Handheld electric tool on the market is various, and most all are relatively small and exquisite, light, and its principle is also most similar, generally speaking, mainly comprises aircraft nose and fuselage, is provided with motor and battery in the fuselage, through the motor drive aircraft nose, carries out the operation.

In order to save the cost and improve the universality of the machine body, a multi-head combined electric tool appears on the market, a machine head shell and a machine body shell of the tool are detachably connected, a user installs different machine heads on the machine body according to the working requirement, a plurality of electric tools with different functions are not required to be purchased, only the machine head needs to be replaced, and only one machine body is required, so that the use cost is saved. Therefore, the detachable connection between the machine head and the machine body is of great importance, and the machine head and the machine body are convenient to disassemble and assemble, reliable to fix and capable of preventing loosening. However, the conventional multi-head electric tool is easy to start by mistake when a machine head is not installed, so that the energy of the machine body is wasted and the use is unsafe.

The publication number "CN 202185909U" discloses a multi-head electric tool, which comprises a machine head shell and a machine body shell, wherein a locking mechanism is arranged between the machine head shell and the machine body shell, a head-changing locking ring is arranged in an inner cavity of the machine head shell, and a plurality of clamping blocks are arranged on the inner wall of the head-changing locking ring; the front end of the machine body shell is provided with a boss matched with the head-changing locking ring, the outer circumferential surface of the boss is provided with a plurality of grooves matched with the clamping blocks, each groove is formed by a vertically arranged guide groove and a transversely arranged clamping groove in a communicated mode, and the clamping blocks are clamped in the clamping grooves. The multi-head electric tool can effectively avoid misoperation, and the connection between the machine head and the machine body is more firm. The multi-head electric tool in the scheme has no influence on the normal starting of the electric tool whether the machine head is installed or not, and the condition that the electric tool is started by mistake is easy to occur.

SUMMERY OF THE UTILITY MODEL

The above-mentioned not enough to prior art exists, the utility model aims to solve the technical problem that a security performance is high, the energy can be saved is proposed, and can prevent the electric tool of abnormal start-up.

The utility model provides a technical scheme that its technical problem adopted is, provides an electric tool with prevent unusual start-up function, including:

a machine head and a machine body; the machine head is detachably connected with the machine body, a power piece and a starting switch for controlling the power piece are arranged in the machine body, a button for driving the starting switch is arranged on the machine body, and a through hole is formed in one side, close to the machine head, of the machine body;

the locking piece is arranged in the machine body and used for locking the button;

the unlocking device is arranged in the machine body and comprises an unlocking piece, and the unlocking piece is movably arranged in the through hole in a penetrating way;

when the handpiece is separated from the body, the locking piece locks the button; when the machine head is connected to the machine body, the machine head can drive the unlocking piece to further unlock the button.

Further, the unlocking device also comprises a spring and an unlocking block; the unlocking piece is an unlocking rod;

one end of the unlocking rod, which is close to the machine head, extends out of the machine body, and the unlocking block is arranged at the other end of the unlocking rod; the spring is sleeved on the unlocking rod.

Furthermore, a first abutting block protrudes from the machine body, and a second abutting block is arranged on the unlocking rod; one end of the spring abuts against the first abutting block, and the other end of the spring abuts against the second abutting block; and the spring is compressed when the handpiece is attached to the body.

Furthermore, one end of the unlocking block, which is close to the locking piece, is provided with an inclined wall, and the inclined wall can drive the locking piece.

Furthermore, the locking piece extends downwards to form a protruding part, and the inclined wall can drive the protruding part.

Furthermore, a through groove is formed in the locking piece, a convex column is arranged on the starting switch, and the convex column is movably arranged in the through groove.

Furthermore, two sides of the machine body are respectively provided with a first mounting hole; the locking piece is provided with two convex blocks corresponding to the first mounting holes, and the two convex blocks are movably arranged in the two first mounting holes respectively.

Furthermore, the button is hinged on the machine body, and a second mounting hole with an upward opening is formed in the button; the starting switch is provided with a starting part, and the starting part is arranged in the second mounting hole.

Further, the second mounting hole is arranged in a waist hole.

Further, the unlocking rod is Z-shaped.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

in the utility model, after the machine head is detached from the machine body, the button is locked by the locking part, and the button cannot be driven at the moment, so that the starting switch cannot be started, the power element can work, the situation that the electric tool is mistakenly started when the machine head is not installed is prevented, the safety performance is high, and the energy is saved; after the machine head is arranged on the machine body, the machine head drives the unlocking rod to retreat to drive the unlocking block to unlock the locking piece from the button, and at the moment, the starting switch can be started by pressing the button to enable the power piece to drive the machine head to work; when the machine head is not arranged on the machine body, the unlocking rod can rapidly protrude out of the machine body for a certain distance under the action of the spring (compressed in an assembly state) to reset, and the response is sensitive; and this aircraft nose and fuselage adopt the form of dismantling the connection, and the fuselage can the aircraft nose of multiple different grade type of adaptation, can act as the power unit of the handheld electric tool of multiple difference, and application range is wide, uses convenient and with low costs.

Drawings

Fig. 1 is a schematic view of the overall structure of the electric tool of the present invention;

FIG. 2 is a schematic view of the fuselage construction;

FIG. 3 is a schematic plan view of the fuselage;

FIG. 4 is a schematic view of the internal structure of the fuselage;

FIG. 5 is a schematic view of the assembly of the start switch, the locking member and the unlocking device;

fig. 6 is an exploded view of fig. 5.

In the figure, the position of the upper end of the main shaft,

1. a machine head;

2. a body; 20. a power member; 21. starting a switch; 210. a convex column; 211. a starting part; 22. a button; 220. a second mounting hole; 23. a through hole; 24. a first resisting block; 25. a first mounting hole;

3. a locking member; 30. a boss portion; 31. a through groove; 32. a bump;

4. an unlocking device; 40. unlocking the lock; 401. a second resisting block; 41. unlocking the block; 410. a sloped wall; 42. a spring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 6, an electric power tool having an abnormal starting prevention function includes: handpiece 1, body 2, locking member 3 and unlocking means 4.

A machine head 1 and a machine body 2; the machine head 1 is detachably connected with the machine body 2, a power part 20 and a starting switch 21 for controlling the power part 20 are arranged in the machine body 2, wherein the power part 20 is a motor, a button 22 for driving the starting switch 21 is arranged on the machine body 2, specifically, the button 22 is hinged on the machine body 2, and a through hole 23 is arranged on one side of the machine body 2 close to the machine head 1;

a locking member 3 provided in the body 2 for locking the push button 22;

the unlocking device 4 is arranged in the machine body 2 and comprises an unlocking piece 40, and the unlocking piece 40 is movably arranged in the through hole 23 in a penetrating mode; the unlocking piece 40 can move in the through hole 23 in a telescopic mode, and then unlocking action is carried out;

when the handpiece 1 is detached from the body 2, the locking piece 3 locks the button 22; when the handpiece 1 is attached to the body 2, the handpiece 1 can drive the unlocking member 41 to unlock the button 22.

Preferably, the unlocking device 4 further comprises a spring 42 and an unlocking block 41, wherein the spring 42 can ensure the resetting of the unlocking block 40, and the spring 42 is compressed in the assembling state of the handpiece 1 and the fuselage 2; the unlocking piece 40 is an unlocking rod which is Z-shaped, so that the second abutting block 401 can be conveniently installed, and the leading-out end of the unlocking rod is conveniently arranged at a preset position. The unlocking block 41 and the unlocking lever are provided separately. One end of the unlocking rod close to the machine head 1 extends out of the machine body 2, and the unlocking block 41 is arranged at the other end of the unlocking rod 40; the spring 42 is sleeved on the unlocking rod 40. Specifically, a first abutting block 24 protrudes from the machine body 1, a second abutting block 401 is arranged on the unlocking rod, and the diameter of the second abutting block 401 is larger than that of the unlocking rod; one end of the spring 42 abuts against the first abutting block 24, and the other end of the spring 42 abuts against the second abutting block 401; and when the aircraft nose 1 even on the fuselage 2, spring 42 is compressed, guarantees when not installing aircraft nose 1 on fuselage 2, under the effect of spring 42, and the unblock pole can be a distance of protrusion outside fuselage 2 rapidly, resets, and the reaction is sensitive.

As shown in fig. 5 and 6, an end of the unlocking block 40 close to the locking member 40 has a slant wall 410, and the slant wall 410 can drive the locking member 40. When the unlocking rod is forced to move towards the direction of the machine body 2 by the machine head 1, the unlocking rod drives the unlocking block 40 to move along the same direction of the movement direction of the unlocking rod, the unlocking block 40 drives the locking piece 3 to move along the left-right direction through the inclined wall 410, the locking piece 3 is unlocked from the button 22, and locking and unlocking are reliable. Specifically, the locking member 3 extends downward to form a protrusion 30, and the inclined wall 410 can drive the protrusion 30, so as to drive the locking member 3 to unlock from the button 22.

A through groove 31 is arranged on the locking piece 3, a convex column 210 is arranged on the starting switch 21, and the convex column 210 is movably arranged in the through groove 31. Two sides of the machine body 2 are respectively provided with a first mounting hole 25; the locking piece 3 is provided with two convex blocks 32 corresponding to the first mounting holes 25, the two convex blocks 32 are respectively movably arranged in the two first mounting holes 25, when the unlocking block 41 drives the locking piece 3 to move along the left-right direction of the machine body, the two convex blocks 32 are always positioned in the first mounting holes 25, the locking piece 3 is ensured to be only translated and not to be separated from the first mounting holes 25, and the reliability of the movement of the locking piece 3 is ensured.

The button 22 is hinged to the body 2, and a second mounting hole 220 with an upward opening is formed in the button 22; the starting switch 21 has a starting portion 211, wherein the starting portion 211 can be configured to have a certain elasticity, after the button 22 is released, the button 22 can be driven to return to the initial position, and the starting portion 211 is disposed in the second mounting hole 220; and the second mounting hole 220 is a waist hole, which reduces the difficulty of assembling the starting switch 21 and the button 22, and can prevent the occurrence of clamping stagnation when the button rotates.

In the using process, after the machine head 1 is detached from the machine body 2, the button 22 is locked by the locking piece 3, the button 22 cannot be driven at the moment, so that the starting switch 21 cannot be started, and the power piece 20 cannot work because the starting switch 21 is electrically connected with the power piece 20, so that the situation that the electric tool is started by mistake when the machine head 1 is not installed is prevented, the safety performance is high, and energy is saved; after the machine head 1 is installed on the machine body 2, the machine head 1 drives the unlocking rod to retreat to drive the unlocking block 41 to unlock the locking piece 3 from the button 22, and at the moment, the button 22 can be pressed to further start the starting switch 21 and start the power piece 20, so that the power piece 20 drives the machine head 1 to work; and this aircraft nose 1 and fuselage 2 adopt the form of dismantling the connection, and fuselage 2 can the aircraft nose 1 of multiple different grade type of adaptation, can act as the power unit of the handheld electric tool of multiple different, and application range is wide, and it is convenient and with low costs to use.

In the scheme, the electric tool can effectively prevent abnormal starting, has high safety performance and saves energy; the structural stability is high.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An electric tool with an abnormal starting prevention function is characterized by comprising:

2. The power tool having an abnormal starting prevention function according to claim 1, wherein the unlocking means further comprises a spring and an unlocking piece; the unlocking piece is an unlocking rod;

3. The electric tool with the abnormal starting prevention function as claimed in claim 2, wherein a first abutting block protrudes from the body, and a second abutting block is arranged on the unlocking lever; one end of the spring abuts against the first abutting block, and the other end of the spring abuts against the second abutting block; and the spring is compressed when the handpiece is attached to the body.

4. The power tool of claim 2, wherein the unlocking block has a sloped wall at an end thereof adjacent to the locking member, and the sloped wall drives the locking member.

5. The power tool of claim 4, wherein the locking member has a downwardly extending projection, and the inclined wall is adapted to drive the projection.

6. The power tool of claim 4, wherein the locking member has a through slot, and the activation switch has a protrusion movably disposed in the through slot.

7. The electric tool with the abnormal starting prevention function according to claim 4, 5 or 6, wherein a first mounting hole is formed in each of two sides of the machine body; the locking piece is provided with two convex blocks corresponding to the first mounting holes, and the two convex blocks are movably arranged in the two first mounting holes respectively.

8. The power tool with the abnormal starting prevention function according to claim 1, wherein the button is hinged to the machine body, and a second mounting hole with an upward opening is formed in the button; the starting switch is provided with a starting part, and the starting part is arranged in the second mounting hole.

9. The power tool with the abnormal starting prevention function according to claim 8, wherein the second mounting hole is a kidney hole.

10. The power tool having an abnormal starting prevention function according to claim 2, wherein the lock release lever has a "Z" shape.