CN101126940A

CN101126940A - Operating bar device

Info

Publication number: CN101126940A
Application number: CNA2007101419826A
Authority: CN
Inventors: 宫原一嘉
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2006-08-17
Filing date: 2007-08-17
Publication date: 2008-02-20
Anticipated expiration: 2027-08-17
Also published as: CN101126940B; JP2008046929A; JP4764285B2

Abstract

The invention provides an operation lever device. The said operation lever device (19) comprises: linkage mechanism (55) connected with one end of cable yarn (41); and an operation lever (38) for making the said linkage mechanism sway. The said operation lever has connecting-rod resetting parts (76). By realising the hold of operation lever, the linkage mechanism at action position by holding the operation lever is forcibly rotated towards not-action position using the connecting-rod resetting parts.

Description

Arrangement of levers

Technical field

The present invention relates to arrangement of levers, by holding the clutch operating that described arrangement of levers makes portable supervisors such as cultivator or two wheeler.

Background technology

By holding with the handle of cultivator in the arrangement of levers that operating rod makes clutch operating, open by Japan is real that clear 64-114 communique is known an operational stroke that has reduced this operating rod, strengthened the arrangement of levers of the range of cable.Below, according to Fig. 8 this arrangement of levers is described.

For arrangement of levers shown in Figure 8 201, when holding operating rod 202, because connecting rod 203 is the direction swing of middle mind-set arrow A 1 with fulcrum 204, thereby with the direction of cable 205 tractions to arrow A 2, therefore, the stroke of cable 205 is elongated.With reference to label 206 are the rollers that are arranged on the opposition side of fulcrum 204 on connecting rod 203.

But in above-mentioned arrangement of levers 201, after holding operating rod 202, even discharge this grasping, resetting of cable 205 sometimes also can be very slow.Specifically,, make connecting rod 203 when the direction of arrow A 1 is rotated, be fastened on cable 205 on the connecting rod 203, become state near the center line of the length direction of connecting rod 203 near fulcrum 204 when shown in double dot dash line, holding operating rod 202 like that.Its result is, there is such problem: diminish by the restoring force that spring force produced (torque that on connecting rod 203, produces) that cable 205 is resetted, even operating rod 202 is returned to the position shown in the solid line, connecting rod 203 does not reset yet, and rest on by the position shown in the double dot dash line, perhaps connecting rod 203 reset very slow.

Therefore, pursue a kind of arrangement of levers, it also can make the operation of operating rod carry out swimmingly in the effect of the existing arrangement of levers of the operational stroke that keeps reducing operating rod, increasing cable stroke, and operation is carried out efficiently.

Summary of the invention

According to the present invention, a kind of arrangement of levers is provided, in this arrangement of levers, have: operating rod, it can be installed on the handle by carriage with freely swinging; Linkage assembly, it is the center with the fulcrum that is installed in the side on the described carriage, swings by the steering force that is applied on the opposite side of described operating rod, thus tractive wire; And the connecting rod reset components, it is installed on the described operating rod, and when described operating rod resetted, this connecting rod reset components contacted with described linkage assembly, and the reset force of described operating rod is applied on the described linkage assembly.

In arrangement of levers of the present invention, behind the operator grasps operating rod, when the grasping that discharges operating rod, the connecting rod reset components of operating rod is run into linkage assembly, and linkage assembly is rotated towards the direction that cable is resetted.Thereby, can carry out the operation of operating rod swimmingly, can carry out operation efficiently.

Above-mentioned connecting rod reset components is preferably by constituting with the lower part: fixed part, and it is fixed on the described operating rod; And leading section, it links to each other with this fixed part, and with the opposite side butt of described linkage assembly.Thereby, the linkage assembly of the state that is difficult to apply with respect to the reset force that has swung to cable, leading section linkage by the connecting rod reset components forcibly applies reset force, thereby can linkage assembly be resetted, and it is more smooth and easy that the operation of operating rod just becomes.

Above-mentioned leading section is preferably placed near the top of opposite side of the described linkage assembly that farthest draws described cable.Thereby the structure of connecting rod reset components that reset force is delivered to linkage assembly is very simple, can realize lightweight.

Description of drawings

Fig. 1 is the side view of cultivator with one of portable supervisor of conduct of arrangement of levers of the present invention.

Fig. 2 is the view to arrow 2 directions of Fig. 1.

Fig. 3 is that it represents the sectional view of arrangement of levers of the present invention along the sectional view of the 3-3 line among Fig. 2.

Fig. 4 is the sectional view along the 4-4 line among Fig. 3, the sectional view of its expression linkage assembly.

Fig. 5 is the part of operating rod shown in Figure 3, is the exploded perspective view of linkage assembly.

Fig. 6 A is the sectional view that arrangement of levers has been carried out the state of operation.

Fig. 6 B is the sectional view along the b-b line among Fig. 6 A.

Fig. 7 A and Fig. 7 B are the sectional views of the state that resets of expression operating rod and linkage assembly.

Fig. 8 is the side view of the existing arrangement of levers of expression.

Embodiment

The present invention is the portable supervisor with arrangement of levers, but should for example comprise cultivator by the movable type supervisor, and mower, snow breaker etc. in illustrated present embodiment, as an example of portable supervisor, show cultivator.

See figures.1.and.2, portable cultivator 10 has: engine 12, and it is installed on the top 11a of body 11; Variator case 13, it is arranged on the rear portion 11b of body 11; Gear (not shown), it is arranged in the variator case 13; Tape handler 15, its driving force with engine 12 is passed to this gear; Rotary operation portion 16, it is arranged on the bottom 13a of variator case 13; Drag strut 17, it is arranged on the rearward end of variator case 13; Handle 18, it is arranged on the upper end of variator case 13; And arrangement of levers 19, it is arranged on the handle 18.

Engine 12 has on the top of engine main body 21: fuel tank 22, air cleaner 23 and exhaust silencer 24.

Preceding counterweight 25 is arranged on the leading section 11c of body 11.By counterweight 25 before being provided with, guarantee that the balance of cultivator 10 is good.

Tape handler 15 has: driving pulley 28, and it is arranged on the output shaft 27 of engine 12; Driven pulley 32, it is arranged on the input shaft 31 of gear; And driving-belt 33, it is wound on driving pulley 28 and the driven pulley 32.The rotation of output shaft 27 is delivered to input shaft 31 by tape handler 15.When input shaft 31 rotated, its rotation was delivered to rotary operation portion 16 by gear.By the rotation of rotary operation portion 16, ploughing and weeding pawl 35 rotates, thereby ploughing and weeding is carried out in the field.The tilling depth amount of ploughing and weeding pawl 35 is adjusted by drag strut 17 is inserted into Tu Zhonglai.

The bar (operating rod) 38 that makes clutch coupling carry out engaged/disengaged be arranged on handle 18 left handle 37 near.

Trip(ping) lever (operating rod) 38 is connected with the clutch arm 43 of tape handler 15 by the clutch line 41 as cable.With reference to label 47 are clutch apparatus.Tensioning roller 44 is arranged on an end of clutch arm 43, and driving-belt 33 is applied tension force, makes clutch apparatus 47 become engagement state.One end fastening of back-moving spring 45 is on clutch arm 43.This back-moving spring 45 all the time to tensioning roller 44 to the direction of leaving driving-belt 33 (non-tension direction) application of force.

Trip(ping) lever 38 is applied steering force Ff (with reference to Fig. 6 A), make trip(ping) lever 38 turn to clutch position Cd (with reference to Fig. 3) from declutched position Cs (with reference to Fig. 3), tape handler 15 switches to the clutch state from the clutch separation state thus.

When removing above-mentioned steering force Ff from trip(ping) lever 38, trip(ping) lever 38 turns back to declutched position Cs, and tape handler 15 switches to the clutch separation state from the clutch state.

With reference to Fig. 3 and Fig. 4, arrangement of levers 19 is by constituting with the lower part: carriage 52, and it is fixed on the tube body 51 of handle 18; Trip(ping) lever 38, it can be installed near the center upper portion of carriage 52 with freely swinging by bar fulcrum shaft 53; Linkage assembly 55, it can be installed in the rear portion, top of carriage 52 by connecting rod pivot axle 54 with freely swinging; And connecting rod stop part 56, it is fixed on the handle 18, is used for by stoping this linkage assembly forwards to rotation with linkage assembly 55 butts.

Carriage 52 has: fixed part 61, and the upper end that it is formed on carriage 52 is fixed by welding on the tube body 51 of handle 18; Cable installation portion 63, it is formed on the front end of carriage 52, connects the end 62 of clutch line 41 securely; And stopper section 65, it is formed on the lower central of carriage 52, and trip(ping) lever 38 is remained on declutched position (position of readiness) Cs.

The arrangement of levers 19 that Fig. 5 has represented to decompose, and this arrangement of levers 19 is further described with Fig. 3 and Fig. 4.

Trip(ping) lever 38 is by constituting with the lower part: support 66, and it is bearing on the carriage 52; Operating portion 67, it forms towards the rear continuously from this support 66, catches on this operating portion 67 with finger and carries out swinging operation.

Specifically, above-mentioned trip(ping) lever 38 has: fulcrum 71, and it is positioned at the top front end of support 66, cooperates with bar fulcrum shaft 53; Abutting part 72, it is positioned at the front end of support 66, with stopper section 65 butts of carriage 52; Stop part installation portion 73, it is installed to connecting rod stop part 56 at the rear (direction of arrow a1) of this abutting part 72; Guide part 74, it is formed on the lower end of support 66; Connecting rod reset components 76, it is installed on the terminal part 75 of this guide part 74; And performance constraint portion 77, it is formed on the rear portion of operating portion 67.Cd is the clutch position (operating limit position) of trip(ping) lever 38 and left handle 37 butts, and Se is the operational stroke of trip(ping) lever 38.

Linkage assembly 55 has: connecting rod pivot portion 83, and it is installed on the connecting rod pivot axle 54, and the cross section forms U word shape; Cable fastening part 84, the formation of ining succession of itself and connecting rod pivot portion 83, the cable end of clutch line 41 is fastening; The formation of ining succession of roller support 85, itself and this cable card-tight part 84; And roller 86, it is installed on this roller support 85 by roller axle 87 free to rotately.Mark Ws is the declutched position of linkage assembly 55, and Wk is the clutch position that farthest draws 41 o'clock linkage assembly of clutch line (cable) 55.

Connecting rod reset components 76 is by constituting with the lower part: fixed part 91, and it is fixed on the trip(ping) lever (operating rod) 38; With leading section 92, it links to each other with fixed part 91 towards the place ahead, is used to push roller 86.When trip(ping) lever 38 was held operating limit position (clutch position) Cd, leading section 92 is (state of Fig. 6 A) between roller 86 and left handle 37.

Guide part 74 has moving part 94, in moving part 94, along with trip(ping) lever 38 rotates (direction of arrow a2) towards operating limit position (clutch position) Cd, after the tractive force of connecting rod stop part 56, on roller 86, continue to apply cable pull power (direction of arrow a3), thereby make linkage assembly 55 rotate (direction of arrow a3).With reference to label 95 are leaking holes, and it is opened in the bottom of the support 66 that links to each other with guide part 74.

As shown in Figure 6A, when with trip(ping) lever 38 when position of readiness (declutched position) Cs holds operating limit position (clutch position) Cd with left handle 37 butts, the clutch position Wk that linkage assembly 55 arrives when farthest drawing clutch line 41.S is the range of clutch line 41.

Shown in Fig. 6 B, be formed with on the connecting rod pivot axle 54 towards below the recess 96 (with reference to Fig. 3 and Fig. 5) that opens wide.Its result is when clutch line 41 farthest is drawn to range S, can prevent the interference between clutch line 41 and the fulcrum shaft 54.By avoiding this interference, compare with existing cable stroke, can further increase the stroke of clutch line 41.

Below, with reference to Fig. 1, Fig. 6 A, Fig. 7 A and Fig. 7 B the effect of the arrangement of levers 19 of present embodiment is described.

At first, as shown in Figure 6A, when the operator with steering force Ff with trip(ping) lever 38 when position of readiness (declutched position) Cs holds operating limit position (clutch position) Cd with left handle 37 butts, the back-moving spring 45 of linkage assembly 55 opposing clutch apparatus 47, arrive position (clutch position) Wk that farthest draws clutch line 41, therefore, the clutch apparatus 47 of tape handler 15 becomes engagement state, thus transmission of drive force.

When position (clutch position) Wk of clutch line 41 has farthest been drawn in linkage assembly 55 arrival, because clutch line 41 is consistent with the center line E of the length direction of linkage assembly 55 near one-tenth, therefore, the torque that is produced on linkage assembly 55 by the back-moving spring 45 of clutch apparatus 47 diminishes, and linkage assembly 55 just is difficult to rotate towards declutched position Ws.

Shown in Fig. 7 A, when pointing when trip(ping) lever 38 leaves, because trip(ping) lever 38 is center descend shown in arrow b1 (resetting) by its deadweight with bar fulcrum shaft 53, therefore, when (having resetted) angle θ when descending, connecting rod reset components 76 and roller 86 butts, and, as arrow b2, begin to push roller 86 with the reset force that the above-mentioned deadweight by trip(ping) lever 38 produces.

Its result is that shown in Fig. 7 B, linkage assembly 55 forcibly begins reset (swing) like that towards declutched position Ws shown in arrow b3.When linkage assembly 55 from the position (clutch position) of farthest drawing clutch line 41 when Wk reaches angle [alpha], the torque Tt that produces on linkage assembly 55 owing to the back-moving spring 45 by clutch apparatus 47 becomes big, therefore, the power of the back-moving spring 45 by clutch apparatus 47, linkage assembly 55 rotates and resets to declutched position Ws.At this moment, because the roller 86 of linkage assembly 55 is pushed guide part 74, therefore, trip(ping) lever 38 resets to declutched position (position of readiness) Cs.

That is, for resetting of trip(ping) lever 38, resetting of linkage assembly 55 responds, thereby can follow resetting of trip(ping) lever 38.

Like this, because the arrangement of levers 19 of present embodiment has connecting rod reset components 79, this connecting rod reset components 79 is used for the reset force of trip(ping) lever 38 is applied to linkage assembly 55, therefore, can not damage the operational stroke Se that reduces trip(ping) lever 38, increase under the situation of function of range S of clutch line 41, make resetting of linkage assembly 55 and clutch line 41, resetting of trip(ping) lever 38 followed in response well.Thereby, can carry out the operation of trip(ping) lever 38 swimmingly, and can carry out operation (for example, ploughing and weeding operation) efficiently.

And the arrangement of levers of present embodiment shows the example that is used in as the cultivator of one of portable supervisor, but in the present invention, is not limited in this, for example, can be applied in the device of structure that automotive bicycle etc. has tractive wire.

Claims

1. an arrangement of levers is characterized in that, described arrangement of levers has:

Operating rod, it can be installed on the handle by carriage with freely swinging;

Linkage assembly, it is the center with the fulcrum that is installed in the side on the described carriage, swings by the steering force that is applied on the opposite side of described operating rod, thus tractive wire; And

The connecting rod reset components, it is installed on the described operating rod, and when described operating rod resetted, this connecting rod reset components contacted with described linkage assembly, and the reset force of described operating rod is applied on the described linkage assembly.

2. arrangement of levers as claimed in claim 1 is characterized in that,

Described connecting rod reset components constitutes by having with the lower part:

Fixed part, it is fixed on the described operating rod; With

Leading section, it links to each other with this fixed part, and with the opposite side butt of described linkage assembly.

3. arrangement of levers as claimed in claim 2 is characterized in that,

Described leading section is positioned near the top of opposite side of the described linkage assembly that farthest draws described cable.