CN207326903U - Switching device and electric tool for electric tool - Google Patents

Abstract

A kind of switching device for electric tool is the utility model is related to, it includes：Button, movably with the cage connection of electric tool, including operation portion and the trigger unit to ON switch circuit；Cage knob, opposite can be movably connected with the shell in electric tool, cage knob operationally opposite shell positioned at making the first position that electric tool is closed or the second place for making the electric tool be in starting state；Cage knob has the stop part that can abut operation portion and the bit space that allows for operation portion insertion；When cage knob is located at first position, stop part is abutted with operation portion, to prevent button from being moved relative to the shell so that on-off circuit is off；When cage knob is located at the second place, button can opposite shell moved, the exercisable insertion of operation portion allows bit space, trigger unit ON switch circuit, so that on-off circuit is in an ON state.Above-mentioned switching device is successively independent by the operation of cage knob and button, so that the problem of preventing clamp hand.

Description

Switching device and electric tool for electric tool

Technical field

Field of power tools is the utility model is related to, more particularly to a kind of switching device and one kind for electric tool Electric tool.

Background technology

The switching device of electric tool includes cage knob and button.In order to ensure the safety of operator, i.e., the setting of cage knob is In the case where cage knob is not pressed, button can not be operated, so as to effectively prevent operator from inadvertently touching button and making electricity Power driven tools are in running order.In conventional art, for the ease of operating, cage knob and button are arranged on to the homonymy of electric tool, Operating personnel, which need to press cage knob and button at the same time, could start electric tool.However, hold during cage knob and button is pressed Easily there is the problem of clamp hand.

Utility model content

Based on this, there is provided during a kind of use for electric tool will not clamp hand switching device.

A kind of switching device for electric tool, including：

Button, movably with the cage connection of electric tool, including operation portion and the triggering to ON switch circuit Portion；

Cage knob, opposite can be movably connected with the shell in electric tool, the cage knob operationally opposite shell positioned at making First position that the electric tool is closed makes the electric tool be in the second place of starting state；It is described Cage knob has the stop part that can abut the operation portion and the bit space that allows for operation portion insertion；

When the cage knob is located at first position, the stop part is abutted with the operation portion, to prevent the button opposite The shell movement so that the on-off circuit is off；

When the cage knob is located at the second place, the button can be moved relative to the shell, and the operation portion can Allow bit space described in the insertion of operation, and drive the trigger unit to control the on-off circuit in an ON state.

Above-mentioned switching device, when electric tool does not work, cage knob is located at first position, and stop part is abutted with operation portion, touches Hair portion disconnects on-off circuit, is off on-off circuit, ensure that the safety of operator；Cage knob need to be in the effect of external force Under be moved to the second place, then operation portion insertion is allowed into bit space, operation portion fortune drives the trigger unit movement so that trigger unit ON switch circuit, makes on-off circuit in an ON state.The operation of cage knob and button is set to first to latter two is independent dynamic Make, so that the problem of clamp hand during preventing use.

In one of the embodiments, both ends are further included to be held in respectively between the shell of the cage knob and electric tool Flexible member；When the cage knob is located at the first position, the flexible member is in non-telescoping nature；When described When cage knob is located at the second place, the flexible member is in compressive state.

In one of the embodiments, the flexible member is spring.

In one of the embodiments, the operation portion has the first groove, and the one side wall of first groove is formed can Allow the insertion section of bit space described in insertion；The displacement that the cage knob is moved to the second place from first position is equal to the insertion section In the width of equidirectional.

In one of the embodiments, the cage knob is moved to the direction of the second place and the operation portion from first position Allow the direction of bit space vertical described in insertion.

In one of the embodiments, it is described to allow bit space to be groove.

In one of the embodiments, the button rotatably cage connection with electric tool.

In one of the embodiments, the button has the connection axis that can be rotatably connected with electric power tool shell, institute Operation portion and the trigger unit is stated to be fixedly connected with the connection axis.

In one of the embodiments, protective shell is further included, the protective shell is fixedly connected with the shell of electric tool, institute State the through hole that there is protective shell two confessions cage knob and the button to pass through.

In addition, also provide a kind of electric tool.

A kind of electric tool, including switching device provided by the utility model.

In one of the embodiments, the electric tool is grass-mowing machine.

Above-mentioned electric tool has switching device provided by the utility model, and when electric tool does not work, cage knob is positioned at the One position, stop part are abutted with operation portion, and trigger unit disconnects on-off circuit, is off on-off circuit, ensure that behaviour The safety of author.Cage knob need to be moved to the second place under the effect of external force, then operation portion insertion allowed bit space, operation portion fortune The trigger unit is driven to move so that trigger unit ON switch circuit, makes on-off circuit in an ON state.I.e. by cage knob and press The operation of button is set to first latter two independent action, so that the problem of clamp hand during preventing use.

Brief description of the drawings

Fig. 1 is that the switching device of the preferred embodiment in the utility model is installed on the structure diagram on electric tool.

Fig. 2 is the structure diagram of the cage knob in Fig. 1.

Fig. 3 is the structure diagram of the button in Fig. 1.

Structure diagram when Fig. 4 is the switching device closure in structure described in Fig. 1.

Wherein, related elements reference numeral is as follows：

100th, switching device 110, cage knob 111, stop part

112nd, bit space 113, convex block 120, button are allowed

121st, operation portion 122, trigger unit 123, connection axis

1231st, hole 124, the first groove 125, insertion section are connected

130th, flexible member 140, protective shell 200, electric tool

210th, shell 220, the second groove 230, block

Embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining The utility model, is not used to limit the utility model.

It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ", For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to the technology of the utility model The normally understood implication of technical staff in domain is identical.It is simply in the term used in the description of the utility model herein The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include The arbitrary and all combination of one or more relevant Listed Items.

The inventor of the utility model is had found by studying, and causes the switching device of electric tool clamp hand in use The problem of the main reason for be：The operating process of the cage knob and button of switching device in conventional art is restricted, cage knob and presses Button needs to press at the same time, can just make electric tool in running order；Generally, cage knob and button are the differences by the same hand What finger was operated：Food is easily clipped to by cage knob when generally using middle finger pressing cage knob, thumb press button, while operating Refer to.

As shown in Figure 1, the switching device 100 that the preferred embodiment in the utility model provides includes cage knob 110,120 and of button Protective shell 140.Wherein, cage knob 110 can relatively movable be connected with the shell 210 of electric tool 200；Button 120 is rotatable It is connected with the shell 210 of electric tool 200.

Protective shell 140 is rectangular shell structure, is fixedly connected with the shell 210 of electric tool 200, specifically, protective shell 140 can use the modes such as welding to be connected with the shell 210 of electric tool 200.There are protective shell 140 two through holes (not mark Show), passed through respectively for cage knob 110 and button 120.The size of two through holes (not indicating) of protective shell 140 can allow cage knob 110 and button 120 press.It should be noted that protective shell 140 can not also be set.

As shown in Fig. 2, cage knob 110 is rectangular parallelepiped structure, opposite can be movably connected with the shell 210.Cage knob 110 can Operatively opposite shell 210 is located at the first position for being closed that instrument of the point or makes the electric tool The second place in starting state；When electric tool 200 does not work, cage knob 110 is located at first position；Cage knob 110 needs outside The second place is moved under the action of power.

One end of cage knob 110 has the stop part 111 that can abut operation portion 121, and supplies to grasp with what stop part 111 abutted That makees portion's insertion allows bit space 112.In this preferred embodiment, bit space 112 is allowed to be groove, only with three inner walls.Need It is bright, allow bit space 112 to can also be other structures, such as L-type groove.

The outside of stop part 111 has a convex block 113.It should be noted that convex block 113 can be cuboid convex block, can To be cylinder convex block or annular shape, the other shapes that can be connected with flexible member 130 are can also be.In order to save Save space, the thickness of cage knob 110 can be thin as far as possible on the premise of working strength is met.

As shown in figure 3, button 120 includes operation portion 121 and the trigger unit 122 to ON switch circuit, operation portion 121 Connected with trigger unit 122 by connecting axis 123.In this preferred embodiment, operation portion 121 and trigger unit 122 are rod-like structure, behaviour Make portion 121, trigger unit 122 to be an integral molding structure with axis 123 is connected.It should be noted that operation portion 121 and trigger unit 122 It can also be the other shapes met the requirements.The shell 210 of electric tool 200, which has, connects column (not indicating), connects axis 123 and has Have and connect the matched connection hole 1231 of column (not indicating), axis 123 can be will turn on and be sheathed on connection column (not indicating), so that Realize the rotary link of button 120 and the shell 210 of electric tool 200.

It should be noted that button 120 and the connection of the shell 210 of electric tool 200 can also use other connections Mode is to realize the active link of button 120 and the shell 210 of electric tool 200, such as：The shell 210 of electric tool 200 has Location hole (does not indicate), connect axis 123 have with location hole (not indicating) it is matched connect column (not indicating), axis can be will turn on 123 connection column (not indicating) is fitted into the location hole (not indicating) of electric tool 200, so as to fulfill button 120 and electronic work The rotary link of the shell 210 of tool 200.

Further, operation portion 121 has the first groove 124, and the side side wall of the first groove 124 forms insertion section 125. The size of first groove 124 can allow stop part 111 to be inserted into.The thickness of insertion section 125, which is less than, allows bit space 112 in phase Tongfang To width so as to can be inserted into resigning space 112.122 end of trigger unit is abutted with the spring (not indicating) of electric tool 200.

In one of the embodiments, switching device 100 further includes both ends and is held in cage knob 110 and electric tool respectively Flexible member 130 between 200 shell 210.Flexible member 130 in this preferred embodiment is spring.Electric tool 200 has Second groove 220, one end of flexible member 130 is contained in the second groove 220, so as to fulfill flexible member 130 and electronic work The connection of the shell 210 of tool 200.When convex block 113 is cuboid or cylinder, convex block 113 can be contained in flexible member 130 one end；When convex block 113 is circular, flexible member 130 can be inserted into the centre bore of convex block 113, so as to fulfill The connection of flexible member 130 and cage knob 110.

Preferably, when cage knob 110 is located at first position, flexible member 130 is in non-telescoping nature；Work as cage knob 120 when being located at the second place, and flexible member 130 is in compressive state.

It should be noted that flexible member 130 is not limited only to spring, the elasticity such as the torsional spring with phase same-action are can also be Structure.One end of torsional spring is connected to the lateral surface of stop part 111, and during pressing cage knob 110, cage knob 110 overcomes the resistance of torsional spring to transport Move to the second place, after unclamping cage knob 110, cage knob 110 returns to first position under the elastic force of torsional spring.

Further, cage knob 110 can also realize cage knob position when electric tool 200 does not work by other connection modes In first position, and can move between the first position and the second position.

Specifically, as shown in Figure 1, when electric tool 200 is in non-working status, cage knob 110 is in flexible member 130 Elastic force effect is lower to be located at first position, and electric tool 200 has block 230, and cage knob 110 can be prevented to make along flexible member 130 The excessive movement in direction, prevents cage knob 110 from departing from electric tool 200.At this time, the insertion section 125 of operation portion 121 is with stopping Portion 111 abuts, to prevent 120 opposite shell of button from moving so that on-off circuit is off.At this time, trigger unit 122 is disconnected On-off circuit is driven, is off on-off circuit, is led so as to effectively prevent operating personnel because touching button 120 unintentionally Send a telegraph the in running order situation of power driven tools 200.

If as shown in figure 4, wanting to make electric tool 200 in running order, switching device 100 is closed.With knit stitch The process closed to switching device 100 elaborates.

First, cage knob 110 is pressed, cage knob 110 overcomes the resistance of flexible member 130 to be moved under the effect of external force Two positions, insertion section 125 are stopped when being no longer connected to stop part 111, and button 120 being capable of opposite shell movement at this time.

Then, the operation portion 121 of button 120 is pressed in the state of cage knob 110 is pressed.At this time, operation portion 121 is slotting Enter the insertion of portion 125 to allow in bit space 112, while stop part 111 is inserted into the first groove 124.Meanwhile drive the trigger unit 122 rotate, and trigger unit 122 is pressed the spring (not indicating) of electric tool 200, ON switch circuit, so that on-off circuit In an ON state, even if electric tool 200 is in running order.

In one of the embodiments, cage knob 110 is moved to the displacement of the second place from first position and is equal to insertion section 125 In the width of equidirectional.

Preferably, cage knob 110 is moved to the direction of the second place and the insertion of operation portion 121 from first position and allows bit space 112 direction is vertical.

It should be noted that if electric tool 200 is set to be constantly in working status, it is necessary to which the moment presses button 120.Once Release button 120, the trigger unit 122 of button 120 is flicked under the action of the spring (not indicating) of electric tool 200, electronic Circuit in instrument 200 disconnects, and stops the working status of electric tool 200.Meanwhile the rotation of operation portion 121 is driven, make to insert Enter portion 125 and skid off from allowing in bit space 112, meanwhile, stop part 111 is also skidded off from the first groove 124, and cage knob 110 is in elasticity Flicked under the action of element 130 to block 230, even if switching device 100 is in opening.

The utility model also provides a kind of electric tool, including switching device provided by the utility model, in the present embodiment In, which is specially grass-mowing machine.

Switching device provided by the utility model, when electric tool does not work, cage knob is located at first position, stop part and behaviour Make portion's abutting, trigger unit disconnects on-off circuit, is off on-off circuit, ensure that the safety of operator；Cage knob needs It is moved to the second place under the effect of external force, then operation portion insertion is allowed into bit space, operation portion fortune drives the trigger unit fortune It is dynamic so that trigger unit ON switch circuit, makes on-off circuit in an ON state.The operation of cage knob and button is set to successively Two independent actions, so that the problem of clamp hand during preventing use.

Switching device provided by the utility model is provided with protective shell, has covered the structure that cage knob and button interfere, Further prevent the clamp hand problem during use.

Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, the scope that this specification is recorded all is considered to be.

Embodiment described above only expresses the several embodiments of the utility model, its description is more specific and detailed, But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims (10)

1. A kind of 1. switching device for electric tool, it is characterised in that including：

   Button, movably with the cage connection of electric tool, including operation portion and the trigger unit to ON switch circuit；

   Cage knob, opposite can be movably connected with the shell in electric tool, operationally opposite shell is described positioned at making for the cage knob First position that electric tool is closed makes the electric tool be in the second place of starting state；The cage knob The bit space that allows with the stop part that can abut the operation portion and for operation portion insertion；

   When the cage knob is located at first position, the stop part is abutted with the operation portion, to prevent the button relatively described Shell moves so that the on-off circuit is off；

   When the cage knob is located at the second place, the button can be moved relative to the shell, and the operation portion is exercisable to be inserted Enter it is described allow bit space, and drive the trigger unit to control the on-off circuit in an ON state.
2. 2. switching device according to claim 1, it is characterised in that further include both ends and be held in the cage knob and electricity respectively Flexible member between the shell of power driven tools；When the cage knob is located at the first position, the flexible member is in non-and stretches The nature of contracting；When the cage knob is located at the second place, the flexible member is in compressive state.
3. 3. switching device according to claim 1, it is characterised in that the operation portion has the first groove, and described first The one side wall of groove, which is formed, can be inserted into the insertion section for allowing bit space；The cage knob is moved to the second place from first position Displacement is equal to width of the insertion section in equidirectional.
4. 4. switching device according to claim 1, it is characterised in that the cage knob is moved to the second place from first position The insertion of direction and the operation portion described in make the direction of bit space vertical.
5. 5. switching device according to claim 1, it is characterised in that described to allow bit space to be groove.
6. 6. switching device according to claim 1, it is characterised in that the button rotatably shell with electric tool Connection.
7. 7. switching device according to claim 6, it is characterised in that the button has and can be revolved with electric power tool shell Turn the connection axis of connection, the operation portion and the trigger unit are fixedly connected with the connection axis.
8. 8. switching device according to claim 1, it is characterised in that further include protective shell, the protective shell and electronic work The shell of tool is fixedly connected, and the protective shell has the through hole that two confessions cage knob and the button pass through.
9. 9. a kind of electric tool, it is characterised in that including switching device described in any item of the claim 1 to 8.
10. 10. electric tool according to claim 9, it is characterised in that the electric tool is grass-mowing machine.