CN202021600U

CN202021600U - Annular handle used for handheld tool

Info

Publication number: CN202021600U
Application number: CN2011201102911U
Authority: CN
Inventors: 李立
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2011-04-14
Filing date: 2011-04-14
Publication date: 2011-11-02
Anticipated expiration: 2021-04-14

Abstract

The utility model provides an annular handle used for a handheld tool, which comprises two half shells, a U-shaped trigger, a microswitch and a triggering mechanism, wherein the U-shaped trigger is arranged in addition the two half shells and stretches out of a shell; the microswitch is arranged in the shell; and the triggering mechanism comprises at least one first oblique surface used for triggering the microswitch. Due to the structure of the annular handle, the displacement direction of the U-shaped trigger is same as the force application direction of the hand all the time, so that operational comfort is effectively improved.

Description

The ring-shaped handle that is used for hand-held tool

Technical field

The utility model relates to a kind of ring-shaped handle that is used for hand-held tool.

Background technology

Hand-held tool comprises at least one for the handle that the operator grips, and for the hand-held tool that needs bimanualness, it has two handles, for example pruner, chain saws etc.Because this class instrument needs the operative orientation of cutter conversion under some operating mode, therefore except having a main handle that is positioned at the tool body rear, also has a ring-shaped handle that is positioned at main body the place ahead.Ring-shaped handle has left and right, last three hold the position, be suitable for the operative orientation of operator's cutter conversion, the operator can hold one of them as required and hold the position.

Above-mentioned hand-held tool with front and back handle has two triggers usually, on the handle, has only when two triggers are all pulled before and after laying respectively at, and motor is just worked.In the prior art, the trigger on the ring-shaped handle is generally the U type, and it has left and right, last three operating positions, holds the position for three that correspond respectively to handle, so no matter to work as the operator and is held on which position of handle, can operating trigger.

Publication number is the ring-shaped handle that the United States Patent (USP) of US5867910 has disclosed the aforesaid U of having type trigger, and a microswitch is installed in handle inside, U type trigger top, no matter from which direction cocking, can both trigger microswitch.Be provided with the gathering sill of a plurality of upside-down triangle shapes in the handle, have a plurality of leads that cooperate with gathering sill respectively on the both sides of U type trigger.When cocking, lead moves in gathering sill, and trigger moves along the limit of vee gutter.Yet this guider can bring the discomfort of operation.When the operator pulls on the left operating position of U type trigger or right operating position, trigger will along the hypotenuse of del towards the upper left side or the upper right side move, rather than move along the direction of pulling of hand, be that the direction of displacement of trigger and the direction of pulling of hand exist deflection, thereby make that operation is uncomfortable.

Summary of the invention

For addressing the above problem, the utility model provides a kind of ring-shaped handle of being used for hand-held tool that has improved, no matter the operator be held in handle which when holding a last cocking, the direction of displacement of trigger all with hand to pull application of force direction consistent, improved the comfort of operation effectively.

The ring-shaped handle that is used for hand-held tool that the utility model provides comprises the two halves sandwich type element, be installed between the two halves housing and from the extended U type of housing trigger, and be installed in microswitch in the housing, it is characterized in that, also comprise a flip flop equipment, described flip flop equipment comprises at least one first inclined-plane that is used to trigger microswitch.

Further, flip flop equipment comprises two first inclined-planes, and the incline direction on two first inclined-planes is opposite.

Further, two first mutual mirror image symmetries in inclined-plane.

Further, flip flop equipment is located between described microswitch and the U type trigger.

Further, flip flop equipment comprises an inverted arcuate part, be formed with described two first inclined-planes on the arcuate part, described U type trigger upper end comprises an arcuate recess of admitting arcuate part, arcuate recess is formed with two second inclined-planes, two first inclined-planes respectively with two second inclined-plane mating reactions.

Further, flip flop equipment also comprises the arresting lever that limits its side-to-side movement.

Further, between housing and the flip flop equipment back-moving spring is housed.

Further, flip flop equipment is formed on the U type trigger.

Further, handle comprises left and right, last three at least and holds the position, comprise a plurality of first director elements on the described U type trigger, comprise a plurality of second director elements that cooperate with first director element on the described handle housing, first and second director elements are held the position about perpendicular to handle.

Further, first director element is the guide post that is positioned on the U type trigger, and described second director element is the step that is positioned at ring-shaped handle left and right sides lever housing.

Description of drawings

Fig. 1 is the in-built schematic diagram of the ring-shaped handle of the first-selected embodiment that discloses of the utility model;

Fig. 2 is the schematic diagram of U type trigger among Fig. 1;

Fig. 3 is the schematic diagram of flip flop equipment among Fig. 1;

Fig. 4 is the in-built schematic diagram of the ring-shaped handle of another kind of embodiment.

The specific embodiment

Ring-shaped handle 10 as shown in Figure 1 can be installed on the multiple hand-held tool, for example pruner, chain saw etc.This ring-shaped handle 10 comprises two halves sandwich type element 1, the housing 1 among Fig. 1 wherein half is removed, clearly illustrated the internal structure of ring-shaped handle 10.Ring-shaped handle 10 comprise a left side hold a 10a, the right side hold a 10b, on hold a 10c, the operator can hold one of them as required and hold the position.U type trigger 2 is installed between the two halves housing 1 and from housing 1 and extends, and pulls for the operator.This U type trigger 2 has left operating position 2a, right operating position 2b, goes up operating position 2c, and it is corresponding one by one that its position and ring-shaped handle 10 three hold.No matter operator grasps which hold the position, can cocking.

In conjunction with illustrated in figures 1 and 2, the left operating position 2a of U type trigger 2 and the inboard of right operating position 2b respectively have guide post 21a, a 21b, and it is perpendicular to left and right sides operating position 2a, the 2b of trigger, also perpendicular to holding a 10a, 10b about handle.Housing 1 inside of ring-shaped handle 10 comprises step 11a, the 11b with the guide post mating reaction,

guide post

21a, 21b can slide on

step

11a, 11b, last guiding contact-making surface 15a, the 15b with

guide post

21a, 21b of

step

11a, 11b holds a 10a, 10b about perpendicular to handle, and the left and right displacement direction that has therefore guaranteed trigger is held a 10a, 10b about perpendicular to handle.Also comprise back-moving

spring

12a, 12b between left and right sides operating position 2a, the 2b of housing 1 and U type trigger 2, make and to get back to the home position when trigger 2 power effect is outside eliminated.

Microswitch 3 is installed in the housing 1, and is positioned at the top of U type trigger 2, and it comprises an outstanding contact 30 downwards.Between microswitch 3 and U type trigger 1, also be provided with a flip flop equipment 4.As shown in Figure 3, flip flop equipment 4 has a convex 40, and it is used to promote contact 30 near contact 30, to touch microswitch 3.Flip flop equipment 4 also comprises an inverted arcuate part 42, and this arcuate part 42 has inclined-plane 42a, the 42b of two symmetries.Correspondingly, the upper end of U-shaped trigger has an inverted arcuate recess 22 that is used to admit arcuate part 42, and it has inclined-plane 22a, the 22b of two symmetries, and this arcuate recess 22 cooperates with the arcuate part 42 of flip flop equipment, is used to support flip flop equipment 4.A pair of back-moving

spring

13a, 13b are housed between handle housing 1 and the flip flop equipment 4, and this upper end to back-moving spring lays respectively in supporting seat 14a, the 14b of housing 1, and the lower end is enclosed within respectively on a pair of support column 43a, the 43b of flip flop equipment.A pair of upwardly extending arresting lever 44a, the 44b of flip flop equipment 4 are against respectively on the opposite flank of supporting

seat

14a, 14b, have therefore limited the left and right displacement of flip flop equipment, and flip flop equipment can only move by in the vertical direction.

In operating process, hold the left side of ring-shaped handle as the user and hold a 10a, and pull the left operating position 2a of U type trigger, apply as shown in Figure 1 a power F when left side left to trigger, trigger 2 is at

guide post

21a, 21b and step 12a, under the cooperation guide effect of 12b to left movement, because flip flop equipment 4 displacement left that is supported on this trigger 2 is subjected to support column 43a restriction, therefore produce relative motion between inclined-plane 22b and the inclined-plane 42b, make flip flop equipment 4 overcome spring 13a, the biasing force of 13b moves upward, thereby microswitch 3 is triggered in the contact 30 that causes convex 40 to promote microswitch.

Otherwise, when the right side that the user holds ring-shaped handle hold a 10b and pull U type trigger right operating position 2b, apply as shown in Figure 1 a power F to the right when right to trigger, thereby the inclined-plane 22a of arcuate recess will promote the flip flop equipment 4 triggering microswitch 3 that moves upward.Because guide post 21a, the 21b of trigger and

step

12a, 12b in the housing are all perpendicular to holding a 10a, 10b about handle, therefore when the left operating position 2a of user's cocking 2 or right operating position 2b, trigger 2 displacement to the left or to the right all perpendicular to about hold a 10a, 10b, consistent with the application of force direction of user's hand, such structure arrangement is comfortable more when making operation.

When the user hold ring-shaped handle on hold a 10c and pull the last operating position 2c of U type trigger, when trigger 2 applies as shown in Figure 1 a power F who makes progress and goes up, trigger 2 along the direction of power F, perpendicular on hold a 10c and move upward, and drive flip flop equipment 4 and move upward, thereby trigger microswitch 3.

Therefore, no matter the user holds ring-shaped handle which holds position, cocking, and the direction of displacement of trigger is consistent with the application of force direction of pulling of hand all the time, has improved the comfort of operation effectively.

Another kind of embodiment as shown in Figure 4, flip flop equipment 4 directly are formed on the U type trigger 2, and this flip flop equipment 4 comprises inclined-plane 41a, the 41b of two mirror image symmetries.The contact 30 of microswitch 3 is than the length in the above-mentioned first-selected embodiment, it extends on the flip flop equipment 4, as user left or to the right during cocking, U type trigger 3 left or move right, make the inclined-plane 41a or the 41b of flip flop equipment contact with contact 30, and cause contact 30 to move up, thereby trigger microswitch 3.This embodiment can reach above-mentioned first-selected embodiment effect equally, realize the purpose of this utility model.

Claims

1. a ring-shaped handle that is used for hand-held tool comprises the two halves sandwich type element, is installed between the two halves housing and from the extended U type of housing trigger, and be installed in microswitch in the housing, it is characterized in that, also comprise a flip flop equipment, described flip flop equipment comprises at least one first inclined-plane that is used to trigger microswitch.

2. the ring-shaped handle that is used for hand-held tool as claimed in claim 1 is characterized in that, described flip flop equipment comprises two first inclined-planes, and the incline direction on two first inclined-planes is opposite.

3. the ring-shaped handle that is used for hand-held tool as claimed in claim 2 is characterized in that, the mutual mirror image symmetry in described two first inclined-planes.

4. the ring-shaped handle that is used for hand-held tool as claimed in claim 2 is characterized in that, described flip flop equipment is located between described microswitch and the U type trigger.

5. the ring-shaped handle that is used for hand-held tool as claimed in claim 4, it is characterized in that, described flip flop equipment comprises an inverted arcuate part, be formed with described two first inclined-planes on the arcuate part, described U type trigger upper end comprises an arcuate recess of admitting arcuate part, arcuate recess is formed with two second inclined-planes, two first inclined-planes respectively with two second inclined-plane mating reactions.

6. the ring-shaped handle that is used for hand-held tool as claimed in claim 5 is characterized in that described flip flop equipment also comprises the arresting lever that limits its side-to-side movement.

7. the ring-shaped handle that is used for hand-held tool as claimed in claim 6 is characterized in that, between described housing and the flip flop equipment back-moving spring is housed.

8. the ring-shaped handle that is used for hand-held tool as claimed in claim 1 is characterized in that, described flip flop equipment is formed on the U type trigger.

9. the ring-shaped handle that is used for hand-held tool as claimed in claim 1, it is characterized in that, described handle comprises left and right, last three at least and holds the position, comprise a plurality of first director elements on the described U type trigger, comprise a plurality of second director elements that cooperate with first director element on the described handle housing, first and second director elements are held the position about perpendicular to handle.

10. the ring-shaped handle that is used for hand-held tool as claimed in claim 9 is characterized in that, described first director element is the guide post that is positioned on the U type trigger, and described second director element is the step that is positioned at ring-shaped handle left and right sides lever housing.