CN103624751A - Safety handle - Google Patents
Safety handle Download PDFInfo
- Publication number
- CN103624751A CN103624751A CN201210299518.0A CN201210299518A CN103624751A CN 103624751 A CN103624751 A CN 103624751A CN 201210299518 A CN201210299518 A CN 201210299518A CN 103624751 A CN103624751 A CN 103624751A
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- handle
- joint
- plane
- connecting axle
- living
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Abstract
A safety handle comprises a handle body and a connector, and is characterized in that the lower portion of the connector can rotate by a certain angle along a connecting shaft to be installed on a rod piece; a through hole capable of allowing a connecting rod to be arranged in a penetrated mode is formed in the upper portion of the connector in the direction of the rod piece so as to enable the head portion of the connecting rod to penetrate through the through hole of the connector and to be limited in an inner hole of the handle body, the tail portion of the connecting rod is connected with a pull cable or a pull rod, and the pull cable or the pull rod is used for controlling a trigger switch; a rotating limiting mechanism is arranged between the handle body and the connector, so the handle body can rotate by a certain angle relative to the connector; a torsional spring is arranged between the handle body and the connector, when the handle body rotates and enables the plane where the handle body is located in and the vertical plane of the connecting shaft to keep parallel or to be on the same plane, the handle body is pulled outwards to drive the connector to rotate along the connecting shaft, therefore, the pull cable or the pull rod can be moved, and the trigger switch is turned on. The safety handle is simple in structure, reasonable in layout and safe and reliable to use, and meets European safety requirements that the handle can be started by two motions with low cost.
Description
Technical field
The invention belongs to garden instrument technical field, specifically a kind of dead-man's handle, can be used for the garden instruments such as hay mover, loosenning tiller.
Background technology
Along with growth in the living standard, the greening level that people live to life requires more and more higher, large-scale ecological greenery patches, city, house greenery patches, Road Green Space etc. constantly increase, therefore various garden instruments are also constantly released, general garden instrument is provided with handle on push rod, carries out the unlatching of switch by the operation of handle.At present there has been safety requirement in Europe to garden instrument (or structure of the trigger switch such as trigger), and the switch of garden instrument must have two actions just can complete startup, the unexpected injury causing with the action preventing due to a maloperation.Therefore along with the increase of export volume, must design a kind of handle of new garden instrument, meet the requirement of European safety, the while is easy to operate, cost is low.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of simple in structure, safe and reliable dead-man's handle, to realize with lower one-tenth, originally reaches the requirement that two actions are opened.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of dead-man's handle, and comprise handle and be arranged on rod member and the involutory joint joining of handle, it is characterized in that:
The bottom of described joint can be made certain angle along connecting axle and be arranged on rotationally on rod member; The top of joint has the through hole that can place for a connecting rod along rod member direction, make the head of described connecting rod through the through hole of joint, be limited in the endoporus of handle, the afterbody of connecting rod is connected with drag-line or the pull bar of controlling trigger switch;
Between described handle and joint, be provided with a rotary position-limit mechanism, make handle make certain angle with respect to joint and rotate;
Between described handle and joint, be provided with a torsion spring, handle had all the time and to sidepiece, rotate and make the vertical plane of handle plane of living in and connecting axle keep nonparallel trend; When handle rotates, make the vertical plane keeping parallelism of handle plane of living in and connecting axle or conplane time, thereby to rotate and realize the displacement of steel wire rope along connecting axle by the drive joint of outwards pulling of handle, and then to open trigger switch.
As improvement, described joint is provided with the involutory surface of handle the cavity communicating with through hole; The end face of described handle is provided with a projection that has an endoporus, and described handle joined by coordinating with joint is involutory of projection and cavity.
Further improve, described rotary position-limit mechanism is located on the involutory surface of handle and joint, the end face of described handle is the circular face concaving, described projection is circular columns, be located at the center of the circular face of indent, between the outside of projection and the periphery of handle, be provided with the raised line of a circular arc, the two ends turnover of raised line forms confined planes; The involutory surface of described joint is the arc surface that is greater than semicircle, on arc surface, arc groove that the outside of described cavity is provided with can be inserted and rotated for described raised line after involutory with the end face of handle, the two ends of arc groove be provided with described raised line the limited block that matches of confined planes.
Improve again, the central angle of described arc groove is just in time greater than 90 °, the central angle of described raised line, when handle rotate in place to sidepiece, handle plane of living in is just in time vertical with the vertical plane of connecting axle, when handle upwards rotate in place, the parallel or same plane of the vertical plane of handle plane of living in and connecting axle.
Further improve, on the end face of described handle, offer and can insert fixing jack for one end of torsion spring, the top of the cavity of described joint is provided with can be for the fixing slot of the other end of torsion spring, and described torsion spring is nested with on the projection of handle, and its two ends are connected and fixed with handle, joint respectively.
Further improve, the endoporus of described handle is shoulder hole, and described connecting rod passes the through hole of joint, the endoporus of handle is nested with a flat shim at head, and the step surface of the upper circlip for shaft of card and endoporus offsets fixing.
Improve again, the top outer surface of the involutory surface of described joint is provided with three-dimensional foresight mark, the outer surface of described handle is provided with locking and the stereo identification of unblanking, and when the vertical plane of handle plane of living in and connecting axle is just in time vertical, the locking on handle identifies the foresight over against joint; When the vertical plane of handle plane of living in and connecting axle is parallel or during same plane, the unblanking foresight of sign over against joint on handle.
As improvement, the lower end of described joint is shaped to the link slot of " U " shape of matching with rod member, the both sides of link slot have symmetrical pin-and-hole, described rod member is provided with the through hole corresponding with described pin-and-hole, by a connecting axle, joint can be done to being arranged on rod member of certain angle rotation along connecting axle.
Finally, described handle plane of living in refers to: handle can determine under a planar condition, it is the plane of handle itself, or handle cannot determine under a planar condition, according to minimum, firmly pulling handle pulls under drag-line or pull bar state, the handle of handle is stressed has maximal projection on the vertical plane of connecting axle, decides this plane, is exactly that parallel surface point of force application, parallel with the vertical plane of connecting axle of crossing now forms virtual handle plane of living in.
Compared with prior art, the invention has the advantages that: simple in structure, easy to operate, safe and reliable, in the time of need to opening, as long as handle is upwards rotated, make the parallel or same plane of the vertical plane of handle plane of living in and connecting axle, then just switch opens can be carried out to work outwards pulling handle, can not occur because a maloperation causes contingency, two European safety requirements that action could start have been met, the present invention is simple in structure, rationally distributed and cost is lower, be adapted at loosenning tiller, electricity hoe, on the garden instruments such as hay mover, apply.
Accompanying drawing explanation
Fig. 1 is STRUCTURE DECOMPOSITION schematic diagram of the present invention;
Fig. 2 is STRUCTURE DECOMPOSITION cutaway view of the present invention;
Fig. 3 is the structural representation of joint of the present invention;
Fig. 4 is the structural representation of handle of the present invention;
Fig. 5 is partial sectional view of the present invention;
Fig. 6 ~ 8th, fundamental diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
As Fig. 1, 2, shown in 5, a kind of dead-man's handle, comprise handle 1 and be arranged on rod member as on push rod 8 with the involutory joint joining 2 of handle 1, the link slot 23 that is shaped to " U " shape of matching with push rod of joint 2, the both sides of link slot 23 have symmetrical pin-and-hole 24, push rod 8 is provided with the through hole corresponding with pin-and-hole, by a connecting axle 9, joint 2 can be done to being arranged on push rod 8 of certain angle rotation along connecting axle 9, the end face of handle 1 is the circular face concaving, the center of the end face of handle 1 is provided with a circular projection 12 that has an endoporus 11, this endoporus 11 is shoulder hole, more than half arc surface 28 that the top of joint 2 is involutory for the end face with handle 1, the upper axial of joint 2 has the through hole 21 that can place for a connecting rod 3, joint 2 is provided with the involutory surface of handle 1 cavity 25 communicating with through hole 21, normally same axial, parallel consistent with the direction of push rod 8, handle 1 joined by projection 12 and coordinating with joint 2 is involutory of cavity 25, and can opposing tabs 1 rotate as certain angle by rotary position-limit mechanism, the head of connecting rod 3 passes the through hole 21 of joint 2, the endoporus 11 of handle 1, at head, be nested with a flat shim 5, and the upper circlip for shaft 6 of card offsets spacing fixing with the step surface of endoporus 11, the afterbody of connecting rod 3 and the drag-line of controlling trigger switch are connected as steel wire rope 7, between handle 1 and joint 2, be provided with a torsion spring 4, handle 1 had all the time and to sidepiece, rotate, make the vertical plane of handle 1 plane of living in and connecting axle 9 keep nonparallel trend, when handle 1 rotates, make the vertical plane keeping parallelism of handle 1 plane of living in and connecting axle 9 or conplane time, thereby rotate and realize the displacement of steel wire rope 7 along connecting axle 9 by the drive joint 2 of outwards pulling of handle 1, and then open trigger switch,
Rotary position-limit mechanism is located on the involutory surface of handle 1 and joint 2, as shown in Figure 3,4, is provided with the raised line 13 of a circular arc between the outside of projection 12 and the periphery of handle 1, and the two ends turnover of raised line 13 forms confined planes 13a and 13b; On the involutory surface of joint 2, arc groove 27 that the outside of cavity 25 is provided with can be inserted and rotated for raised line 13 after involutory with the end face of handle 1, the two ends of arc groove 27 be provided with raised line 13 confined planes 13a and 13b the limited block a and the b that match; The central angle of arc groove 27 is just in time greater than 90 °, the central angle of raised line 13, when handle 1 rotate in place to sidepiece, handle 1 plane of living in is just in time vertical with the vertical plane of the connecting axle 9 of joint 2, handle 1 is in the lock state, when handle 1 upwards rotate in place, the vertical plane of the connecting axle 9 of handle 1 plane of living in and joint 2 is just in time in same plane or be parallel to each other, and handle 1 is axial consistent with joint 2, can open; On the end face of handle 1, the outside of projection 12 offers and can insert fixing jack 15 for one end of torsion spring 4, the top of the cavity 25 of joint 2 is provided with can be for the fixing slot 26 of the other end of torsion spring 4, torsion spring 4 is nested with on the projection 13 of handle 1, and its two ends are connected and fixed with handle 1, joint 2 respectively.
Certainly rotary position-limit mechanism also can adopt pin and circular arc guide groove fit structure, is separately positioned on the involutory surface of handle 1 and joint 2, can obtain similar effect, and this is common in traditional technical field.
The top outer surface of the involutory surface of joint 2 is provided with three-dimensional foresight mark 22, the outer surface of handle 1 is provided with locking and the stereo identification 14 of unblanking, when the vertical plane of handle 1 plane of living in and connecting axle 9 is just in time vertical, the locking sign 14 foresight marks 22 over against joint 2 on handle 1; When the vertical plane of handle 1 plane of living in and connecting axle 9 is parallel or during same plane, the unblanking sign on handle 1, over against the foresight mark 22 of joint 2, so just can operate more intuitively.
During installation, first torsion spring 4 being nested with to one end on projection 12 snaps in the jack 15 of handle 1, again the other end is snapped in the slot 26 of joint 2, joint 2 is connected with handle 1 is involutory, then connecting rod 3 is passed to the through hole 21 of joint 2, the endoporus 11 of handle 1 finally rotates the position of unblanking by handle 1, flat shim 5 is enclosed within to the head of connecting rod 3, and the upper circlip for shaft 6 of card, whole handle 1 has assembled.
Operation principle is such:
As shown in Figure 6, handle 1 is under the effect that there is no external force, can impose on its pretightning force by torsion spring 4, it is in the lock state, now the confined planes 13a of handle 1 and the limited block a of joint 2 offset, the locking sign 14 foresight marks 22 over against joint 2 on handle 1, now because handle 1 plane of living in is vertical with the vertical plane of connecting axle 9, not in same plane or parallel surface, axis L-L does not exist, directly with hand, move backward and can not realize, thus can not drop the enough distances of steel wire rope 7 displacements, therefore can not opening switch;
As shown in Figure 7, handle 1 is upwards rotated to 90 °, now the confined planes 13b of handle 1 and the limited block b of joint 2 offset, and complete first element; Now the vertical plane due to handle 1 plane of living in and connecting axle 9 is in same plane or parallel surface, and axis K-K exists;
As shown in Figure 8, the axis K-K of take pulls handle 1 as pivot backward, can complete second action, make steel wire rope 7 produce the displacement of certain distance, and then open trigger switch, once as long as hand unclamps, torsion spring 4 will reset to rapidly the lock-out state of Fig. 7 with fixed handle 1, complete once circulation.
The present embodiment only handle of " L " type of just advantages of simple writes up, handle plane of living in is exactly the plane of handle itself like this, if handle is special-shaped, if the handle of handle is arc line shaped or line of torsion strip etc., now, handle plane of living in cannot decide according to the shape of handle own, can firmly pull handle according to minimum pulls under drag-line state, the handle of handle is stressed has maximal projection on the vertical plane of connecting axle, decide this plane, it is exactly the point of force application of crossing now, the parallel surface parallel with the vertical plane of connecting axle forms virtual handle plane of living in.
Claims (9)
1. a dead-man's handle, comprises handle and is arranged on rod member and the involutory joint joining of handle, it is characterized in that
The bottom of described joint can be made certain angle along connecting axle and be arranged on rotationally on rod member; The top of joint has the through hole that can place for a connecting rod along rod member direction, make the head of described connecting rod through the through hole of joint, be limited in the endoporus of handle, the afterbody of connecting rod is connected with drag-line or the pull bar of controlling trigger switch;
Between described handle and joint, be provided with a rotary position-limit mechanism, make handle make certain angle with respect to joint and rotate;
Between described handle and joint, be provided with a torsion spring, handle had all the time and to sidepiece, rotate and make the vertical plane of handle plane of living in and connecting axle keep nonparallel trend; When handle rotates, make the vertical plane keeping parallelism of handle plane of living in and connecting axle or conplane time, thereby to rotate and realize the displacement of drag-line or pull bar along connecting axle by the drive joint of outwards pulling of handle, and then to open trigger switch.
2. dead-man's handle according to claim 1, is characterized in that described joint is provided with the involutory surface of handle the cavity communicating with through hole; The end face of described handle is provided with a projection that has an endoporus, and described handle joined by coordinating with joint is involutory of projection and cavity.
3. dead-man's handle according to claim 1, it is characterized in that described rotary position-limit mechanism is located on the involutory surface of handle and joint, the end face of described handle is the circular face concaving, described projection is circular columns, be located at the center of the circular face of indent, between the outside of projection and the periphery of handle, be provided with the raised line of a circular arc, the two ends turnover of raised line forms confined planes; The involutory surface of described joint is the arc surface that is greater than semicircle, on arc surface, arc groove that the outside of described cavity is provided with can be inserted and rotated for described raised line after involutory with the end face of handle, the two ends of arc groove be provided with described raised line the limited block that matches of confined planes.
4. dead-man's handle according to claim 3, the central angle that it is characterized in that described arc groove is just in time greater than 90 °, the central angle of described raised line, when handle rotate in place to sidepiece, handle plane of living in is just in time vertical with the vertical plane of connecting axle, when handle upwards rotate in place, the parallel or same plane of the vertical plane of handle plane of living in and connecting axle.
5. dead-man's handle according to claim 1, it is characterized in that offering and can inserting fixing jack for one end of torsion spring on the end face of described handle, the top of the cavity of described joint is provided with can be for the fixing slot of the other end of torsion spring, described torsion spring is nested with on the projection of handle, and its two ends are connected and fixed with handle, joint respectively.
6. dead-man's handle according to claim 1, the endoporus that it is characterized in that described handle is shoulder hole, described connecting rod passes the through hole of joint, the endoporus of handle is nested with a flat shim at head, and the step surface of the upper circlip for shaft of card and endoporus offsets fixing.
7. according to the dead-man's handle described in the arbitrary claim of claim 1 to 6, the top outer surface that it is characterized in that the involutory surface of described joint is provided with three-dimensional foresight mark, the outer surface of described handle is provided with locking and the stereo identification of unblanking, when the vertical plane of handle plane of living in and connecting axle is just in time vertical, the locking sign on handle is over against the foresight of joint; When the vertical plane of handle plane of living in and connecting axle is parallel or during same plane, the unblanking foresight of sign over against joint on handle.
8. according to the dead-man's handle described in the arbitrary claim of claim 1 to 6, it is characterized in that the lower end of described joint is shaped to the link slot of " U " shape of matching with push rod, the both sides of link slot have symmetrical pin-and-hole, described rod member is provided with the through hole corresponding with described pin-and-hole, by a connecting axle, joint can be done to being arranged on rod member of certain angle rotation along connecting axle.
9. according to the dead-man's handle described in the arbitrary claim of claim 1 to 6, it is characterized in that described handle plane of living in refers to: handle can determine under a planar condition, it is the plane of handle itself, or handle cannot determine under a planar condition, according to minimum, firmly pulling handle pulls under drag-line or pull bar state, the handle of handle is stressed has maximal projection on the vertical plane of connecting axle, deciding this plane, is exactly that parallel surface point of force application, parallel with the vertical plane of connecting axle of crossing now forms virtual handle plane of living in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299518.0A CN103624751B (en) | 2012-08-22 | 2012-08-22 | A kind of dead-man's handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299518.0A CN103624751B (en) | 2012-08-22 | 2012-08-22 | A kind of dead-man's handle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103624751A true CN103624751A (en) | 2014-03-12 |
| CN103624751B CN103624751B (en) | 2015-12-16 |
Family
ID=50206387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210299518.0A Expired - Fee Related CN103624751B (en) | 2012-08-22 | 2012-08-22 | A kind of dead-man's handle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103624751B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106256494A (en) * | 2015-06-18 | 2016-12-28 | 利优比株式会社 | Hand held electric tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4044532A (en) * | 1975-08-25 | 1977-08-30 | The Black And Decker Manufacturing Company | Two-motion switch for cordless lawnmower |
| US5203147A (en) * | 1992-01-22 | 1993-04-20 | Ryobi Motor Products Corp. | Lawn mower activation switch |
| EP0981945A2 (en) * | 1998-08-28 | 2000-03-01 | Black & Decker Inc. | Safety lock mechanism for a lever switch |
| CN2662618Y (en) * | 2003-07-17 | 2004-12-15 | 苏州太湖企业有限公司 | Switch gearing device of grass cutter |
| CN2764127Y (en) * | 2004-11-16 | 2006-03-15 | 苏州太湖企业有限公司 | Grass cutter handle switch device |
| CN202825774U (en) * | 2012-08-22 | 2013-03-27 | 宁波奇亚园林工具有限公司 | Safe handle |
-
2012
- 2012-08-22 CN CN201210299518.0A patent/CN103624751B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4044532A (en) * | 1975-08-25 | 1977-08-30 | The Black And Decker Manufacturing Company | Two-motion switch for cordless lawnmower |
| US5203147A (en) * | 1992-01-22 | 1993-04-20 | Ryobi Motor Products Corp. | Lawn mower activation switch |
| EP0981945A2 (en) * | 1998-08-28 | 2000-03-01 | Black & Decker Inc. | Safety lock mechanism for a lever switch |
| CN2662618Y (en) * | 2003-07-17 | 2004-12-15 | 苏州太湖企业有限公司 | Switch gearing device of grass cutter |
| CN2764127Y (en) * | 2004-11-16 | 2006-03-15 | 苏州太湖企业有限公司 | Grass cutter handle switch device |
| CN202825774U (en) * | 2012-08-22 | 2013-03-27 | 宁波奇亚园林工具有限公司 | Safe handle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106256494A (en) * | 2015-06-18 | 2016-12-28 | 利优比株式会社 | Hand held electric tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103624751B (en) | 2015-12-16 |
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Granted publication date: 20151216 Termination date: 20170822 |
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| CF01 | Termination of patent right due to non-payment of annual fee |