CN204011140U - The opening device of a kind of angle mill - Google Patents

Abstract

The utility model relates to the opening device of a kind of angle mill, comprise housing, push button, it is characterized in that: in housing, be provided with switch and switch lever, the lower end of push button is stretched into housing and is connected with switch lever, switch lever constrains in housing and can move forward and backward, the rear end of switch lever has touch part, the reach of switch lever can allow touch part touch switch, in housing, be provided with the spring that makes touch part be kept away from switch trend, the rear portion of push button is upturned and forms the portion that presses, the lower front of push button has the clamping block to lower convexity, on housing, have the first lock slots and the second lock slots that insert location for clamping block.In this opening device when work, pushes away before must first pressing down simultaneously and turns round, and just can make to push away the moving switch lever reach of twisted strip trigger switch, and breakdown action need to be pressed and front push away two actions and coordinate simultaneously, effectively prevents that misoperation from starting angle mill, avoids the accidental activation of angle mill; By the locking of clamping block and lock slots, can allow angle mill remain on on-position and open position in addition, operate more humane.

Description

The opening device of a kind of angle mill

Technical field

The utility model relates to a kind of switching device of electric tool, relates in particular to the opening device of a kind of angle mill, and this opening device, just taking angle mill as example, is not limited to angle mill certainly, can be various electric tools.

Background technology

The known hand-held disc type angle grinding machine being made up of main element, gearhead and handle is provided with the motor as drive source in main element.Gearhead is arranged on the front portion of main element, and handle is arranged on the rear portion of main element.Gearhead comprises gear box, and at the in-built gear drive that has to reduce motor speed of gear box, the rotation after being slowed down by this gear drive is delivered to axis body, on this axis body, disk wheel is installed.The user of electric tool can use hand gripping handle, bottom at handle is provided with switch, user pulls switch with finger tip or slides between on-position and open position, in the time that user makes it move to on-position with finger tip operating switch at gripping handle time, power circuit becomes path, motor rotation, angle grinder is done; In the time that switch contacts from the state of being pulled, this switch is correspondingly got back to open position under spring action, and motor shuts down.

Existing angle mill switch, in the time of work, needs hand to promote or operating switch keeping always, and use as long-time in need can allow operator tired, has reduced electric tool as the operability of angle mill.Existing angle mill switch only needs an action as pulled or promoting in addition, just can grind by opening angle, has the risk of misoperation, and fail safe is poor, and in today of day by day focusing on safety in production, existing angle mill construction of switch fails safety standards.

Summary of the invention

Technical problem to be solved in the utility model is that a kind of angle mill opening device that can prevent that misoperation from starting is provided for above-mentioned prior art present situation, and this opening device can remain on opening device on-position and open position, and operability is better.

The utility model solves the problems of the technologies described above adopted technical scheme: the opening device of a kind of angle mill, comprise housing, and be located on housing can before and after the push button of slippage, it is characterized in that: in described housing, be provided with switch and switch lever, the lower end of described push button is stretched into housing and is connected with switch lever, switch lever constrains in housing and can move forward and backward, the rear end of switch lever has touch part, the reach of switch lever can allow described touch part touch described switch, in described housing, be provided with the spring that makes touch part be kept away from switch trend, the rear portion of described push button is upturned and forms the portion that presses, the lower front of push button has the clamping block to lower convexity, on described housing, have the first lock slots and the second lock slots that insert location for described clamping block, pressing the portion of pressing can allow clamping block upwards depart from the first lock slots or the second lock slots, under state in clamping block inserts the first lock slots, described touch part is away from switch, under state in clamping block inserts the second lock slots, described switch is touched in described touch part.

The lower surface of above-mentioned push button has the connecting portion to downward-extension, on housing, have the perforation of passing for connecting portion, on described switch lever, have the connecting hole in order to be connected with connecting portion, the vertical wall of described connecting portion is through described connecting hole, and the horizontal wall of connecting portion is positioned at the below of switch lever.It is the concrete structure that a kind of push button is connected with switch lever, the vertical wall of the connecting portion of push button inserts in connecting hole, the reach of push button like this, the vertical wall of connecting portion and the front inwall of connecting hole on push button are contacted, and then drive switch lever to move forward, the gear of the horizontal wall of connecting portion and connecting rod bottom surface is joined in addition, can prevent that push button from upwards departing from housing.

For convenience of front push button, the front portion of the upper surface of above-mentioned push button has the arcwall face being upturned, and forms anti-skidding lines on the surface of arcwall face.

The outer face of above-mentioned housing is provided with in push button the guiding wall that push button is retrained around.Guiding wall is set has guide effect to the movement of push button, and guiding push button is pressed fore-and-aft direction slippage, prevents that push button is offset.

In above-mentioned housing, be fixed with spring base, on described touch part, have limited post, one end of described spring is supported in the cavity of spring base, and the other end of spring is set on described limited post.

Compared with prior art, the utility model has the advantage of: when this opening device starts angle mill, must first press down the portion that presses of turning round that pushes away, make clamping block depart from the constraint of the first lock slots, simultaneously before push away and turn round again, just can make to push away the moving switch lever reach of twisted strip trigger switch, breakdown action need to be pressed and front push away two actions and coordinate simultaneously, effectively prevent that misoperation from starting angle mill, avoids the accidental activation of angle mill; By pushing away the locking of clamping block and the first lock slots and the second lock slots of turning round bottom, can allow angle mill remain on on-position and open position in addition, operate more humane.

Brief description of the drawings

Fig. 1 is the perspective view of the utility model embodiment;

Fig. 2 is the cutaway view of the utility model embodiment;

Fig. 3 is the A place enlarged drawing of Fig. 2;

Fig. 4 be in the utility model embodiment, push away turn round, assembling schematic perspective view between switch and switch lever;

Fig. 5 is the three-dimensional exploded view of the utility model embodiment.

Embodiment

Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.

As shown in Fig. 1～5, be a preferred embodiment of the present utility model, the present embodiment opening device is taking angle mill as example.

The opening device of a kind of angle mill, comprise housing 1, and be located at the push button 3 of energy front and back slippage on housing 1, in housing 1, be provided with switch 2 and switch lever 5, the lower end of push button 3 is stretched into housing 1 and is connected with switch lever 5, makes the front and back slippage of push button 3 can drive switch lever 5 front and back slippages.The front portion of the upper surface of push button 3 has the arcwall face 34 being upturned, and forms anti-skidding lines on the surface of arcwall face 34.The outer face of housing 1 is provided with in push button 3 guiding wall 14 that push button 3 is retrained around.

Push button 3 is connected with switch lever 5 by following structure: the lower surface of push button 3 has the connecting portion 33 to downward-extension, on housing 1, have the perforation 13 of passing for connecting portion 33, on switch lever 5, have the connecting hole 52 in order to be connected with connecting portion 33, the vertical wall 331 of connecting portion 33 is through connecting hole 52, and the horizontal wall 332 of connecting portion 33 is positioned at the below of switch lever 5.

Switch lever 5 constrains in housing 1 and can move forward and backward, the rear end of switch lever 5 has the touch part 51 arranging to downward-extension, the reach of switch lever 5 can allow touch part 51 touch switchs 2, between touch part 51 and switch 2, be provided with the spring 4 that makes touch part 51 be kept away from switch 2 trend, the rear portion of push button 3 is upturned and forms the portion 31 that presses, press between portion 31 and housing 1 end face and form gap, the lower front of push button 3 has the clamping block 32 to lower convexity, on housing 1, have for clamping block 32 and insert the first lock slots 11 and second lock slots 12 of location, pressing the portion of pressing 31 can allow clamping block 32 upwards depart from the first lock slots 11 or the second lock slots 12, under state in clamping block 32 inserts the first lock slots 11, touch part 51 is away from switch, under state in clamping block 32 inserts the second lock slots 12, described switch 2 is touched in touch part 51.

On switch 2, be fixed with spring base 6, have limited post 511 on touch part 51, one end of spring 4 is supported in the cavity of spring base 6, and the other end of spring 4 is set on described limited post 511.

Operation principle and the process of the opening device of this angle mill are as follows:

Opening angle mill process: first press down the portion that presses 31 of turning round 3 that pushes away, the front end of push button 3 is upturned, make clamping block 32 depart from the constraint of the first lock slots 11, before push away and turn round 3 more simultaneously, push away and turn round 3 and drive switch lever 5 to overcome the elastic force reach of spring 4 by the connecting portion 33 of bottom, touch part 51 touch switchs 2 at switch lever 5 rear portions, angle mill is started working, push away the clamping block 32 of turning round 3 bottoms simultaneously and insert in the second lock slots 12, angle mill is locked in to unlatching on-position.

Switch off angle mill process: press down equally the portion that presses 31 of turning round 3 that pushes away, the front end of push button 3 is upturned, make clamping block 32 depart from the constraint of the second lock slots 12, switch lever 5 moves after under the restoring force effect of spring 4, after driving push button 3, move, switch 2 is left in the touch part 51 at switch lever 5 rear portions simultaneously, and angle mill quits work, finally push away the clamping block 32 of turning round 3 bottoms and insert in the first lock slots 11, angle mill is locked in to open position.

Claims (5)

1. the opening device of an angle mill, comprise housing (1), and be located on housing can before and after the push button (3) of slippage, it is characterized in that: in described housing (1), be provided with switch (2) and switch lever (5), the lower end of described push button (3) is stretched into housing (1) and is connected with switch lever (5), described switch lever (5) constrains in housing (1) and can move forward and backward, the rear end of switch lever (5) has touch part (51), the reach of switch lever (5) can allow described touch part (51) touch described switch (2), in described housing (1), be provided with the spring (4) that makes touch part (51) be kept away from switch (2) trend, the rear portion of described push button (3) is upturned and forms the portion (31) that presses, the lower front of push button (3) has the clamping block (32) to lower convexity, on described housing (1), have the first lock slots (11) and the second lock slots (12) that insert location for described clamping block (32), pressing the portion of pressing (31) can allow clamping block (32) upwards depart from the first lock slots (11) or the second lock slots (12), under state in clamping block (32) inserts the first lock slots (11), described touch part (51) is away from switch, under state in clamping block (32) inserts the second lock slots (12), described switch (2) is touched in described touch part (51).

2. the opening device of angle according to claim 1 mill, it is characterized in that: the lower surface of described push button (3) has the connecting portion (33) to downward-extension, on housing (1), have the perforation (13) of passing for connecting portion (33), on described switch lever (5), have the connecting hole (52) in order to be connected with connecting portion (33), the vertical wall (331) of described connecting portion (33) is through described connecting hole (52), and the horizontal wall (332) of connecting portion (33) is positioned at the below of switch lever (5).

3. the opening device of angle according to claim 1 mill, is characterized in that: the front portion of the upper surface of described push button (3) has the arcwall face (34) being upturned, and on the surface of arcwall face (34), forms anti-skidding lines.

4. the opening device of angle according to claim 1 mill, is characterized in that: the outer face of described housing (1) is provided with the guiding wall (14) that push button (3) is retrained around in push button (3).

5. the opening device of angle according to claim 1 mill, it is characterized in that: in described housing (1), be fixed with spring base (6), on described touch part (51), there is limited post (511), one end of described spring (4) is supported in the cavity of spring base (6), and the other end of spring (4) is set on described limited post (511).