CN101120642A

CN101120642A - Hand-held tool

Info

Publication number: CN101120642A
Application number: CNA2006101152168A
Authority: CN
Inventors: 焦石平
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Baoshide Machinery (Zhangjiagang) Co., Ltd.
Priority date: 2006-08-09
Filing date: 2006-08-09
Publication date: 2008-02-13
Anticipated expiration: 2026-08-09
Also published as: CN101120642B

Abstract

The present invention relates to a hand-holding tool, which comprises a working part, a handle component supplied for the operator to operate and a link lever connecting the working part with the handle component; wherein, the handle component comprises a first handle and a second handle that is connected with the first handle; the handle component is movably connected with the link lever and is provided with a first position and a second position; moreover, the handle component can be fixedly connected with the link lever on the first position and on the second position; and the angle between the first handle and the link lever on the second position is different from the angle between the first handle and the link lever on the first position, and the angle between the second handle and the link lever on the second position is different from the angle between the second handle and the link lever on the first position. Through the adjustment way, the force applied on the handle component by the user is greatly reduced when operating with one hand; moreover, the handle component can provide a rather comfortable operation angle for the user.

Description

Handheld tool

Technical field

The present invention relates to a kind of outdoor gardening class cutting tool, relate in particular to a kind of cutting tool of hand-held.

Background technology

At present, hand-held class instrument such as mower has the connecting rod of a longitudinal extension usually, an end of connecting rod is provided with work package, the other end of connecting rod is provided with a handle that is shaped, provide the user when cutting work, to grip this handle with a hand, because work package is located at the end of strip connecting rod, the user keeps contacting with the face of land for making workpiece, must use arm muscle power gripping handle to keep this mode of operation, after work a period of time, the user will feel the arm DOMS, in order to extenuate this situation, this type of handle for tool bar is provided with second handle in the known technology, is used for providing when operation the user to carry out bimanualness with another hand gripping, usually bimanualness is compared one-handed performance and just can not made people's fatigue so easily, but bimanualness does not have one-handed performance so convenient.

U.S. bulletin patent US 6,327,781 B1 have disclosed a kind of mower operating mechanism that can single both hands alternation, its work package is arranged on an end of connecting rod, the other end of connecting rod is provided with first handle and second handle relatively, second handle can be regulated between the primary importance and the second place, when second handle is positioned at primary importance, second handle cooperates with first handle so that bimanualness to be provided, when second handle is positioned at the second place, second handle cooperates with first handle to provide wrist or forearm to support, and makes the operator be hold by one hand first handle and carries out one-handed performance.Yet, the second place is during with respect to primary importance, second handle has strengthened to the distance of the residing vertical plane of work package, and first handle does not change to the distance of the residing vertical plane of work package, that is to say, the arm of force of the moment that work package applies the handle place when work has extended, thereby moment has also become greatly, so, though the user can realize one-handed performance, but also much bigger power in the time of need providing than bimanualness, obviously operation makes the operator produce fatigue equally easily even causes muscle damage like this.In addition, this singlehanded mode that realizes also makes the second handle should not be apart from the hypertelorism of the residing vertical plane of work package, thereby makes second handle be difficult to adjust to suitable position, the comfort level in the time of therefore can influencing user's one-handed performance.

Summary of the invention

The invention provides a kind of handheld tool, it can provide the user to switch between one-handed performance and bimanualness, and comparatively laborsaving and comfortable when one-handed performance.

For realizing summary of the invention, the present invention adopts following technical scheme: a kind of handheld tool, comprise work package, supply the Handleset of user's operation and the connecting rod that connects work package and Handleset, wherein Handleset comprises first handle and the second handle that is connected with first handle; Handleset and connecting rod flexibly connect, it has the primary importance and the second place, and can on this primary importance and the second place, be maintained fixed with connecting rod, and first handle when the second place and the angle of connecting rod be different from it when primary importance and the angle of connecting rod, second handle when the second place and the angle of connecting rod be different from it when primary importance and the angle of connecting rod.

Compared with prior art, the invention has the beneficial effects as follows: when handheld tool of the present invention is regulated between the position of the position of bimanualness and one-handed performance, first handle and second handle have all participated in adjustment process, make the angle of both and connecting rod that variation all take place.Adjusting in this way, the active force that the user is applied to when one-handed performance on the Handleset will greatly reduce, and Handleset can provide the user comparatively comfortable work angle.

Description of drawings

The invention will be further described below in conjunction with drawings and embodiments.

Fig. 1 is the front view of Handleset when primary importance of handheld tool of the present invention;

Fig. 2 is the front view of Handleset when the second place of handheld tool of the present invention;

Fig. 3 A is the partial schematic sectional view of the junction of the Handleset of handheld tool of the present invention and connecting rod, and wherein button is positioned at the 3rd position;

Fig. 3 B is the partial schematic sectional view of the junction of the Handleset of handheld tool of the present invention and connecting rod, and wherein button is positioned at the 4th position;

Fig. 4 be the Handleset among Fig. 3 B second handle along d to plan view;

Fig. 5 A-5C is the cross-sectional schematic along A-A direction among Fig. 3 A and Fig. 3 B, and wherein Fig. 5 A is a Handleset when being positioned at primary importance, and Fig. 5 B is that Handleset is in by primary importance in the adjustment process of the second place, and Fig. 5 C is that Handleset is when being positioned at the second place;

Fig. 6 is the cross-sectional schematic along B-B direction among Fig. 3 A and Fig. 3 B;

Fig. 7 A-7C is the cross-sectional schematic along C-C direction among Fig. 3 A and Fig. 3 B, and wherein Fig. 7 A is a Handleset when being positioned at primary importance, and Fig. 7 B is that Handleset is in by primary importance in the adjustment process of the second place, and Fig. 7 C is that Handleset is when being positioned at the second place.

Embodiment

The present invention discloses a kind of handheld tool that can switch between bimanualness and one-handed performance two states, mainly describe by mower in the following embodiments.

As the mower 1 that Fig. 1 and Fig. 2 disclosed, it comprises a work package 30, by the extended obliquely connecting rod 20 in work package 30 tops and be connected the Handleset 10 at connecting rod 20 tops.Wherein work package 30 has at the motor 31 of vertical direction lengthwise setting with by the extended line 32 of beating the grass in the close bottom position place of motor lateral surface, this line of beating the grass is a nylon wire in the present embodiment, can drive the nylon wire rotation and the formation horizontal cutting when motor rotation.Connecting rod 20 is provided with flexible button 24, can prolong or shorten the length of connecting rod by regulating this button, thereby makes things convenient for user's operation of different heights.Handleset 20 is formed with faying face 17 at itself and connecting rod 20 junctions, and on this faying face, Handleset 10 can be realized the switching between bimanualness and one-handed performance.Shown in the dotted line among Fig. 1, it should be noted that perpendicular to the axis of faying face and the axis on the connecting rod lengthwise bearing of trend to be provided with at an angle that in the present embodiment, this angle is approximately 45 degree.Certainly, for what those of ordinary skill in the art can expect easily be, this angle also can be other angles, and as 30 degree or 60 degree, so the faying face that is provided with can't influence the regulating effect of Handleset.

Handleset 10 comprises a first handle 11 and the second handle 12 that is connected with first handle.Handleset 10 as shown in Figure 1 is positioned at first when firmly putting, first handle 11 extends from connecting rod 20 tops, end at first handle 11 is bent to form a holding part 110, be provided with an electrical switch 111 in the inboard, holding part, it electrically connects by the motor 31 of cable 50 (as shown in Fig. 3 A) with work package 30, when thereby the user uses mower at needs, only need to get final product starter motor by pushing the switch on the first handle.Cooperate with reference to shown in Figure 4, first handle 11 is provided with fixed part 112 in the position near connecting rod 20, the a pair of connecting portion 121 that second handle 12 is fixedlyed connected with this fixed part, and be connected with connecting portion 121 terminal one and with the support portion 122 that is approximately perpendicular to connecting rod 20.When Handleset 10 was positioned at as shown in Figure 1 primary importance, user's both hands were caught the holding part 110 of first handle 11 and the support portion 122 of second handle 12 respectively, thereby work package 30 can be mentioned the work of beating the grass.When Handleset is positioned at as shown in Figure 2 the second place, with respect to primary importance, Handleset 10 integral body have turned to 180 degree on faying face, at this moment, the user can hold the holding part 110 of first handle 11 with one hand, its forearm or ancon or upper arm can lean against on the support portion 122 of second handle 12 simultaneously, thereby can singlehanded mower be mentioned the line operate of going forward side by side.Be adjusted to the second place from primary importance, variation has all taken place with the angle of connecting rod 20 in first handle 11 and second handle 12, in the present embodiment, first handle 11 is meant specifically that with the angle of connecting rod 20 first handle 11 extends to the part of holding part 110 and the angle of connecting rod 20 from the junction with connecting rod 20, and second handle 12 specifically is meant the connecting portion 121 of second handle 12 and the angle of 122 defined planes, support portion and connecting rod 20 with the angle of connecting rod 20.180 degree when 90 degree when in the present embodiment, 90 degree when 180 degree of the angle of first handle 11 and connecting rod 20 during by primary importance are reduced to the second place, the angle of second handle 12 and connecting rod 20 are by primary importance are increased to the second place.Handleset 10 is when the second place, though second handle 12 has increased during with respect to primary importance to the distance of motor 31 residing fore-and-aft planes, but first handle 11 has reduced during with respect to primary importance to the distance of motor 31 residing fore-and-aft planes, so, work package 30 time is applied in work that moment on the Handleset 10 does not increase or recruitment is less, compare the first handle invariant position, and second handle is adjusted to the situation as the second place in the present embodiment, the active force that is applied to during user's one-handed performance on the Handleset will greatly reduce, thereby the user can be laborsaving a lot of when carrying out one-handed performance.In addition, because first handle 11 and 12 of second handles can keep teaching big spacing, so the support portion 122 of second handle 12 can very cosily operate the user at the people of the different bodily forms so that the support of forearm or ancon or upper arm to be provided respectively.

In the present embodiment, between first handle and second handle relative fixed setting, in other embodiments, on the adjustable basis of first handle, second handle also can be done further to regulate with respect to first handle, with the one-handed performance angle that provides the user to select the most comfortable.Can be with reference to U.S. Pat 6,327 about second handle with respect to the regulative mode of first handle, 781 B1, the applicant is no longer given unnecessary details at this.In addition, in the present embodiment, the adjusting angle of Handleset 10 between the primary importance and the second place is 180 degree, but be for what those of ordinary skill in the art can expect easily, this angle also can be other angles, only need guarantee that work package 30 is positioned at Handleset 10 when work the place ahead gets final product.

In the present embodiment, Handleset 10 is to be adjusted to the second place by the pivot mode by primary importance.Shown in Fig. 3 A and Fig. 3 B, be provided with a pivot at Handleset 10 and 20 on connecting rod.Handleset 10 under the diapire mediad of connecting rod 20, convex with a boss 13, its central authorities are provided with through hole, pass through for cable 50.Boss 13 bottoms are laterally to having extended to form flange 131.The roof central authorities towards Handleset 10 at connecting rod 20 are provided with opening, and in when assembling, the flange 131 of boss 13 can embed in the opening and fasten with the roof of the opening both sides of connecting rod 20, thereby avoids Handleset 10 to break away from connecting rod when pivoting with respect to connecting rod 20.Cooperation is with reference to Fig. 5 A-5C and shown in Figure 6, first slit 151 that upwards is recessed to form first circular trough 15 and is communicated with first circular trough 15 at the diapire of Handleset 10 is recessed to form second circular trough 25 corresponding with first circular trough 15 and second slit 251 that is communicated with second circular trough downwards at the roof of connecting rod 20.One button spring 40 is housed in first circular trough 15 and second circular trough 25, its have by its top side to extend and corresponding be housed in first slit 151 in can with the inwall of Handleset 10 against first elastic arm 41 and by its bottom side to extend also corresponding be housed in second slit 251 can with the inwall of connecting rod 20 against second elastic arm 42.When Handleset 10 pivoted, the part that button spring 40 is enclosed formed the pivot of pivot.Shown in Fig. 5 A-5C, be concaved with circular groove 16 on the diapire of Handleset 10, be formed with joint portion 161 at the end of this circular groove.On the roof of connecting rod 20, convex with the limiting section 26 that extends into circular groove 16 and can do relative motion within it.

Shown in Fig. 3 A, 3B, connecting rod 20 is inherent to be provided with a button mechanism near its roof places, and this button mechanism comprises a button 21, be arranged on button 21 tops and below is used for a pair of spacing platform 23 that limit button slides in the horizontal direction and the spring 22 that links to each other with an end of button 21 in the horizontal direction.Wherein button 21 has the outer free end of housing that can be extended out connecting rod 20, and this free end forms a press section 211.Near the convex stop part 212 that stretches out of an end that is connected with spring, the bottom of the flange 131 of Handleset 10 convexes with the protuberance 132 that can cooperate with the stop part 212 of button 21 downwards to button 21 at its top.Cooperation is with reference to shown in Fig. 7 C, and the stop part 212 of button 21 is formed with vertical plane 2121 in the one side, is formed with inclined plane 2122 at opposite side.

Button 21 has one the 3rd position and one the 4th position.As shown in Fig. 3 A and 7A, when Handleset 10 be in primary importance, when button 21 is in the 3rd position, spring 22 is in the flexible state of nature, and the press section of button 21 211 is protruding to be exposed at outside the housing of connecting rod 20, the stop part 212 of button 21 and the protuberance 132 of the boss 13 of Handleset 10 against.At this moment, the vertical plane 2121 of stop part 212 is relative with protuberance 132.It should be noted that, there is prestressing force in the button spring 40 at this moment, this prestressing force is applied to respectively on Handleset 10 and the connecting rod 20 by the effect of first elastic arm 41 and second elastic arm 41, and force Handleset 10 and connecting rod 20 to produce relative movement trend, but, and make Handleset and connecting rod can't produce relative motion because the stop part 212 on the connecting rod 20 has stopped the protuberance 132 of Handleset 10.By this structure, can guarantee Handleset when primary importance with respect to the connecting rod secure fixation.When the user wants to switch to one-handed performance and when needing regulating handle assembly 10 from bimanualness, press section 211 by pushing button 21 is depressed into the 4th position shown in Fig. 3 B with button, cooperation is with reference to shown in Fig. 5 B and the 7B, at this moment, the stop part 212 of button 21 breaks away from the protuberance of boss 13 132, thereby Handleset 10 is pivoted with respect to connecting rod 20 under the twisting force of button spring 40.Shown in Fig. 5 A-5B, in this process, limiting section 26 is maintained fixed motionless, by itself and the cooperating of circular groove 16, can make Handleset 10 can make stable pivoting action.Shown in Fig. 5 C, when Handleset 10 forwards the second place to, the joint portion 161 that is formed at circular groove 16 ends and limiting section 26 against, and the stress in this moment button spring 40 does not discharge fully, still have the trend of further motion, but can't rotate owing to the restriction of limiting section 26.By this structure, can guarantee Handleset 10 when the second place with respect to connecting rod 20 secure fixation.

When the user was pressed into shown in Fig. 3 B and 7B the 4th position with button 21, spring 22 was in contraction state, and after the user loosed one's grip, button 21 was returned to the 3rd position shown in Fig. 7 C under the effect of spring 22 restoring forces.Certainly, for what those of ordinary skill in the art can expect easily be, in other embodiments, can not need spring, the user press section of only need pulling back can be returned to button the 3rd position.In addition, in other embodiments, button also can be set to the pivot mode, promptly stir the press section, the stop part of button is rotatable and break away from protuberance, because the conversion of this motion mode is conspicuous for those of ordinary skill in the art, so the applicant is no longer given unnecessary details.When the user wants when one-handed performance switches to bimanualness, the user only needs Handleset 10 in opposite direction from second place clawback to primary importance, shown in Fig. 7 C, because the stop part 212 of button 21 this moment is its inclined plane 2122 towards protuberance 132, so the protuberance 132 of Handleset 10 will be crossed inclined plane 2122 through stop part 212 time; Shown in Fig. 7 A, when Handleset 10 was got back to primary importance, its protuberance 212 will be again stopped by the vertical plane 2121 of stop part 132.

For what those of ordinary skill in the art can expect easily be, Handleset also can adopt other regulative modes, as Handleset and connecting rod by buckle or be threaded, when needing to regulate, Handleset is disassembled, then rotate to an angle, as 180 degree, then by buckle or engage thread it is connected with connecting rod again, thereby finishes adjusting.Because the said structure conversion is conspicuous for the ordinary skill in the art, so the applicant is no longer given unnecessary details.In addition, in the above-mentioned embodiment be with the mower be example as an illustration, present invention may also be implemented in other handheld tool, as trimmer, blower etc.

Claims

1. a handheld tool comprises work package, supplies the Handleset of user's operation and the connecting rod that connects work package and Handleset, and wherein Handleset comprises first handle and the second handle that is connected with first handle; It is characterized in that: Handleset and connecting rod flexibly connect, it has the primary importance and the second place, and can on this primary importance and the second place, be maintained fixed with connecting rod, and first handle when the second place and the angle of connecting rod be different from it when primary importance and the angle of connecting rod, second handle when the second place and the angle of connecting rod be different from it when primary importance and the angle of connecting rod.

2. handheld tool according to claim 1, it is characterized in that: described first handle when the second place and the angle of connecting rod less than it when the primary importance and the angle of connecting rod, described second handle when the second place and the angle of connecting rod greater than it when the primary importance and the angle of connecting rod.

3. handheld tool according to claim 1 is characterized in that: described first handle is provided with the switch that is used to start work package, described second handle have the connecting portion that is connected with first handle and be connected with connecting portion and with the support portion of connecting rod approximate vertical; Wherein when primary importance, first handle and second handle grip for user's both hands respectively, and when the second place, the support portion of first handle and second handle supplies the support of being hold by one hand of user and ancon or arm respectively.

4. handheld tool according to claim 1, it is characterized in that: described work package has the motor of vertical setting, described first handle when primary importance to the distance of the residing fore-and-aft plane of motor greater than its distance when the second place to the residing fore-and-aft plane of motor, described second handle when primary importance to the distance of the residing fore-and-aft plane of motor less than its distance when the second place to the residing fore-and-aft plane of motor.

5. handheld tool according to claim 1 is characterized in that: described Handleset is formed with faying face in the junction of itself and connecting rod, and axis vertical with this faying face and the axis on the connecting rod bearing of trend are the angle setting.

6. handheld tool according to claim 1 is characterized in that: the junction of described Handleset and connecting rod is formed with pivot, and described Handleset is adjusted to the second place by pivoting by primary importance.

7. handheld tool according to claim 6, it is characterized in that: described pivot comprises the pivot of vertical setting and is set in the outer button spring of pivot, described button spring has by its top and extends and resilient abutment is extended and second elastic arm of resilient abutment on connecting rod at first elastic arm on the Handleset with by its bottom, and described button spring all is in the state of strain when the primary importance and the second place.

8. handheld tool according to claim 6, it is characterized in that: described Handleset is formed with arc groove being arranged with towards the connecting rod place, convex with on the described connecting rod extend into this arc groove and can be when Handleset be regulated in arc groove the limiting section of relative motion, when Handleset was positioned at the second place, the end of described limiting section and arc groove leant with the further motion of restriction Handleset.

9. handheld tool according to claim 6, it is characterized in that: connecting rod is provided with button, this button can be regulated between one the 3rd position and one the 4th position, and described button is provided with stop part, and above-mentioned Handleset is provided with the protuberance that cooperates with this stop part; When Handleset is positioned at primary importance, and button is when being positioned at the 3rd position, and stop part and protuberance be against with the motion of restriction Handleset, when button is positioned at the 4th position, stop part and projection from.

10. handheld tool according to claim 9 is characterized in that: further be provided with the spring that is connected with button on the connecting rod, when button is positioned at the 3rd position, spring in the raw, when button was positioned at the 4th position, spring was in contraction state.

11. handheld tool according to claim 1, it is characterized in that: this handheld tool is a mower, the work package of described mower has the motor of vertical setting, and this mower further comprises by position extended the beat the grass line of motor lateral surface near the bottom.