JP3050424U - Work machine throttle lever - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a throttle lever of a working machine which enables various kinds of working machines to quickly reduce the engine speed in an emergency. SOLUTION: A handle member is detachably attached to one of left and right handle bars of a pair of handle bars extending from a main body of the working machine, and a lever member is rotatably provided, and the lever member is moved in one direction. The rotational speed of the engine of the working machine is increased by rotating the working machine, and the rotational speed of the engine of the working machine is reduced by rotating the lever member in the other direction. Is provided.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention is intended to reduce the number of rotations of the above-mentioned engine in machines equipped with a general-purpose engine, for example, in various working machines such as a cultivator, a mower, a luggage carrier, a rice planter, a mower, a binder, a combine, a snowplow, and the like. The operability of the throttle lever of the work equipment for adjustment has been improved, especially as the engine speed can be quickly reduced in an emergency with the operator holding the operation handle. About things.

[0002]

[Prior art]

 In a work machine, for example, a cultivator, a pair of handle bars is extended from the cultivator body, and a so-called throttle lever is attached to one of the pair of handle bars. By rotating and operating the throttle lever in an appropriate direction, the engine speed is increased or decreased.

[0003]

[Problems to be solved by the invention]

 According to the above-mentioned conventional configuration, there are the following problems. That is, in the conventional throttle lever, the lever member is simply attached rotatably, and the shape of the lever member is very simple. Therefore, its operability is poor, especially in an emergency, for example, when the tiller hits an obstacle or the like, the speed changes suddenly due to a change in work cultivated land, an operator's operation error, etc. In the case where the operation handle suddenly rises due to the reaction force, there is a problem that this cannot be performed quickly when it is desired to reduce the number of revolutions of the engine.

The present invention has been made based on such a point, and an object of the present invention is to provide a throttle of a working machine capable of rapidly reducing the engine speed in an emergency in various kinds of working machines. To provide levers.

[0005]

[Means for Solving the Problems]

 To achieve the above object, the throttle lever of the working machine according to claim 1 of the present invention is detachably attached to one of left and right handle bars of a pair of handle bars extending from the main body of the working machine, and is a lever member. Is rotatably provided, the rotational speed of the engine of the working machine is increased by rotating the lever member in one direction, and the working machine is rotated by rotating the lever member in the other direction. The rotation speed of the engine is reduced, and the lever member is provided with an auxiliary operation unit. According to a second aspect of the present invention, there is provided a throttle lever for a working machine according to the first aspect of the present invention, wherein the auxiliary operating portion is a pressing member projecting substantially at a middle position of the lever member. It is assumed that. According to a third aspect of the present invention, there is provided a throttle lever for a working machine according to the first aspect, wherein the lever member is formed to be wide and the end portion is formed to have a narrow width. It is a feature. According to a fourth aspect of the present invention, there is provided a throttle lever for a working machine according to the first aspect of the present invention, wherein a recess is formed in a bottom surface of the lever member. According to a fifth aspect of the present invention, there is provided a throttle lever for a working machine according to the first aspect, wherein a wire is attached to and detached from a side of the lever portion opposite to the handle bar. is there. A throttle lever for a working machine according to claim 6 is the throttle lever for a working machine according to any one of claims 1 to 5, wherein the throttle lever is attached to an inner side surface of a handlebar. The pressing member protrudes from the upper surface of the lever member, and rotates the lever member downward to increase the rotation speed of the engine of the work machine and to rotate the lever member upward. In this way, the rotation speed of the engine of the work machine is reduced, and in an emergency, the rotation speed of the engine of the work machine is reduced by pressing the pressing member and rotating the lever member upward. is there. A throttle lever for a working machine according to claim 7 is the throttle lever for a working machine according to any one of claims 1 to 5, wherein the throttle lever is attached to an inner side surface of a handlebar. The pressing member protrudes from the lower surface side of the lever member. By rotating the lever member upward, the rotational speed of the engine of the working machine is increased, and the lever member is rotated downward. In this way, the rotation speed of the engine of the work machine is reduced, and in an emergency, the rotation speed of the engine of the work machine is reduced by pressing the pressing member and rotating the lever member downward. is there. The throttle lever for a working machine according to claim 8 is the throttle lever for a working machine according to any one of claims 1 to 5, wherein the throttle lever is attached to an upper surface of a handlebar and a pressing member. Is protruded from the right side of the lever member, and by rotating the lever member to the left to increase the rotation speed of the engine of the working machine, and by rotating the lever member to the right, The rotation speed of the engine of the work machine is reduced by lowering the rotation speed of the engine of the work machine, and pressing the pressing member to rotate the lever member clockwise in an emergency. According to a ninth aspect of the present invention, there is provided a throttle lever for a working machine according to any one of the first to fifth aspects, wherein the throttle lever is attached to an upper surface of a handlebar and has a pressing member. Is projected from the left side surface of the lever member, and by rotating the lever member to the right to increase the rotation speed of the engine of the working machine, and by rotating the lever member to the left, The rotation speed of the engine of the work machine is reduced by lowering the rotation speed of the engine of the work machine and pressing the pressing member in an emergency to rotate the lever member to the left.

First, the throttle lever of the working machine according to claim 1 of the present invention is detachably attached to one of right and left handle bars of a pair of handle bars extending from the body of the working machine, A lever member is provided rotatably. By rotating the lever member in one direction to increase the rotation speed of the engine of the work machine, and by rotating the lever member in the other direction, The rotation speed of the engine of the working machine is reduced, and an auxiliary operation section is provided on a lever member. In other words, the rotation speed of the engine is always adjusted by rotating and operating the lever member itself, but this can be performed via the auxiliary operation unit in an emergency. . According to a second aspect of the present invention, there is provided a throttle lever for a working machine according to the first aspect of the present invention, wherein the auxiliary operating portion is a pressing member protruding from a substantially middle position of the lever member. In the throttle lever of the working machine according to the third aspect, the lever member is formed to be wide and the end portion is formed to be narrow, thereby improving the operability. According to a fourth aspect of the present invention, there is provided a throttle lever for a working machine according to the first aspect of the present invention, wherein a concave portion is formed on a bottom surface of the lever member. Therefore, the operability is improved. According to a fifth aspect of the present invention, there is provided a throttle lever for a working machine according to the first aspect of the present invention, wherein a wire is attached to and detached from a side of the lever portion opposite to the handle bar. When the wire is attached or detached, the handle bar does not become an obstacle, and the workability of attaching and detaching work is greatly improved. Claims 6 to 9 specify the mounting positions of the lever member and the pressing member, and can provide good workability in any case.

[0007]

[Embodiment of the invention]

 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. This embodiment shows an example in which the present invention is applied to a tiller. FIG. 1 is a diagram showing the entire configuration of a cultivator according to the present embodiment. First, there is a cultivator body 1. In the cultivator body 1, the engine 3 is housed and the power generator 5 is housed. The power generator 5 is configured to ignite the fuel of the engine 3 via the ignition wire 7.

A frame 9 is attached to the lower surface of the cultivator body 1, and a drive shaft 11 is arranged below the frame 9. The tilling unit 13 is detachably attached to the drive shaft 11. Then, the drive of the engine 3 is transmitted to the drive shaft 11 via a drive transmission unit (not shown), whereby the tilling unit is driven. The drive transmission means may be, for example, a pulley / belt mechanism, a chain / sprocket mechanism, a gear group mechanism, or the like. Incidentally, FIG. 1 shows an example in which a pulley / belt mechanism is employed, and the portion is shown by a virtual line.

The cultivator body 1 is extended with a pair of handle rods 15, 15. FIG. 1 shows only the handle bar 15 on the right side (the side on which the operator shakes with the right hand) of the pair of handle bars 15. The engine stop circuit wiring 17 extends from the power generator 5 described above, and the engine stop circuit wiring 17 extends along the handle rod 15.

[0010] A tip end of the handle rod portion 15 is a handshake portion 19, and a throttle lever 21 is attached to the handshake portion 19. The throttle lever 21 functions as an adjustment lever for adjusting the rotation speed of the engine 3.

Next, the configuration of the throttle lever 21 and its vicinity will be described. First, the shape of the throttle lever 21 itself is as shown in FIGS. 2 to 4, 6 and 7. FIG. As shown in FIGS. 6 and 7, the throttle lever 21 is roughly composed of three parts, that is, a left end member 23, a lever member 25, and a right end member 27. The left end member 23, the lever member 25, and the right end member 27 are connected and fixed via a fastening bolt 31 and a nut (not shown) with a switch mechanism (not shown) and a leaf spring member 29 sandwiched therebetween. There. A fixing bracket 33 is attached, and the fixing bracket 33 includes a pair of bracket pieces 35 and 37, a fixing bolt 39, and a fixing nut 41. The handle bar 15 near the handshake portion 21 is sandwiched between a pair of metal pieces 35 and 37, and is fastened and fixed by a fixing bolt 39 and a fixing nut 41 in this state.

As shown in FIG. 2, the throttle lever 21 is attached so as to be disposed on the inner side surface of the handshake portion 19. Looking at the shape of the lever member 25, first, the width (width B in the vertical direction in FIG. 2) is relatively large. Further, a pressing member 43 is protrudingly provided on the upper surface side at a substantially intermediate position. The pressing member 43 is curved and formed so that the worker side becomes concave. Further, a stepped portion 45 is formed at the tip of the lever member 25, and its width (B ₁ ) is small. As shown in FIG. 7, a concave portion 47 is formed on the bottom surface side of the lever member 21. The width of the lever member 21 and the functions of the pressing member 43 and the concave portion 47 will be described in detail in relation to the operation.

A wire 51 is detachably connected to the throttle lever 21. That is, as shown in FIG. 6, the lever member 25 has a groove 53 for mounting the wire 51, and a notch for inserting and removing the end member 55 attached to the end of the wire 51. 57 are formed. Then, as shown in FIG. 6, before the connection, the wire 51 is in a state shown by a virtual line. Then, first, the end member 55 is inserted into the notch 57, and then the wire 51 is inserted into the groove 53. In this manner, one end of the wire 51 is connected to the operation lever 21 side. It should be noted here that the notch 57 for inserting and removing the wire 51 is located inside the throttle lever 21. This will also be explained in detail later in the section on actions and effects.

Next, a circuit configuration for urgently stopping the engine 3 will be described. The already-described engine stop circuit wiring 17 is connected to an engine emergency stop switch arranged at an arbitrary position separately from the throttle lever 21. By operating the engine emergency stop switch, the power supply of the power generator 5 is short-circuited. Thereby, the engine 3 is stopped.

The operation will be described based on the above configuration. First, during normal operation, as shown in FIGS. 2 to 4, the worker performs the work while shaking the handshake 19 of the right handlebar 15 with the right hand. At this time, the operator naturally shakes the handshake 19 of the left handlebar 15 with the left hand. Then, when increasing the rotation speed of the engine 3, as shown in FIG. 3, the lever member 25 of the throttle lever 21 is turned downward with the thumb of the right hand. Conversely, when lowering the rotation speed of the engine 3, as shown in FIG. 4, the lever member 25 of the throttle lever 21 is turned upward by four fingers other than the thumb. The desired tillage work is performed while appropriately performing such operations.

Next, a case where the rotational speed of the engine 3 is significantly reduced for some reason will be described. As such an event, for example, a case in which some abnormality occurs in the tilling machine and the tilling machine is largely tilted forward as shown in FIG. 5 is expected. In such a case, the lever member 25 of the throttle lever 21 is largely turned upward by four fingers other than the right thumb. Thereby, the rotation speed of the engine 3 can be greatly reduced. Further, at this time, as shown in FIG. 5, when the cultivator is largely tilted forward, it may be difficult to perform a rotation device with four fingers other than the right thumb. In this case, the pressing member 43 is greatly urged forward by the thumb. As a result, the lever member 25 of the throttle lever 21 is pivoted largely upward, so that the rotational speed of the engine 3 can be greatly reduced.

According to the present embodiment, the following effects can be obtained. First, the operability of the throttle lever 21 is greatly improved. The first reason is that the width (B) of the lever member 25 is relatively large. That is, because the width (B) of the lever member 25 is relatively large, the operation with four fingers other than the thumb becomes easy. Next, a concave portion 47 is provided on the bottom surface of the lever member 25 of the throttle lever 21, and the tips of four fingers other than the thumb are just fitted in the concave portion 47, so that the operability of the lever member 25 is improved. It is very good. Next, when the pressing member 43 is protrudingly provided, for example, when the cultivator is in a state as shown in FIG. 5, the lever member 25 can be rotated by the thumb through the pressing member 43. It is mentioned that it is. In particular, since the pressing member 43 is curved and formed in a concave shape toward the near side, it is easy for the thumb to perform the turning operation to the other side, thereby further enhancing the above-described effect. You can do it. The necessary operability can be obtained even if the pressing member 43 is not curved.

Next, there is an advantage that the attaching / detaching work of the wire 51 to / from the throttle lever 21 is easy to perform. Usually, the attachment / detachment of the wire 51 to / from the throttle lever 21 is performed outside (on the handlebar portion 15 side). In this case, the handlebar portion 15 becomes an obstacle to the attachment / detachment work. On the other hand, in the case of this embodiment, since the attachment / detachment work of the wire 51 to / from the throttle lever 21 can be performed inside, the handle rod 15 does not become an obstacle, Workability will be greatly improved.

Next, a second embodiment of the present invention will be described with reference to FIG. That is, in the first embodiment, the throttle lever 21 is arranged on the inner side surface of the handshake portion 25, but may be arranged on the upper surface side as shown in FIG.

Next, a third embodiment of the present invention will be described with reference to FIGS. 9 and 10. In the case of the first and second embodiments described above, the cultivator is described as an example of the working machine, and the throttle lever attached to such a cultivator has been described. In the case of the first embodiment, a so-called mower is assumed, and an example in which the mower is attached to such a mower and applied to a throttle lever will be described. As shown in FIGS. 9 and 10, the throttle lever 100 includes an end member 101, an end member 103, and a lever member 105 sandwiched between the end members 101 and 103. A spring or the like (not shown) is interposed between the end members 101 and 103 and the lever member 105.

The lever member 105 includes a horizontal member 107, and a pressing member 109 is protruded from a surface on which the horizontal member 107 extends. Normally, by rotating and operating the horizontal member 107 upward, the engine speed is increased, and conversely, by rotating and operating downward, the engine speed is reduced. is there. At this time, if necessary, the pressing member 109 is urged, and the lever member 105 is rotated and operated in the downward direction, thereby lowering the engine speed.

Further, a fixing bracket 111 is attached to the end member 103 side, and is fastened and fixed to the operating rod 115 of the mower by bolts. The attachment and detachment of the wire 117 to and from the throttle lever 100 is performed from the opposite side of the fixing bracket 111. That is, the notch 121 is formed in the end member 101, and the groove 123 is formed between the end members 101 and 103. Therefore, the metal fitting 119 attached to the tip of the wire 117 is inserted through the notch 121, and the wire 117 is further inserted. And it is provided along the groove 123.

Therefore, in the case of this embodiment, the same operation and effect as in the case of the first and second embodiments can be obtained.

The present invention is not limited to the first to third embodiments. First, in the case of the first and second embodiments, a tilling machine will be described as an example, and in the case of the third embodiment, mowing will be described as an example. The present invention may be applied to various working machines other than the mowing machine, for example, a luggage carrier, a rice planter, a mowing machine, a binder, a combine, a snowplow, and the like. Further, the configuration of each unit is not limited to the illustrated one.

[0025]

[Effect of the invention]

 As described in detail above, according to the throttle lever of the working machine according to the present invention, first, the operability of the throttle lever is greatly improved. This is because the auxiliary operation unit is provided, and in an emergency, the engine speed can be rapidly reduced via the auxiliary operation unit. Also, when the auxiliary operating portion is a pressing member protruding substantially at the intermediate position of the lever member, extremely good operability can be obtained. In addition, when the width of the lever member is relatively large, it is easy to operate with a finger, thereby further improving operability. When a concave portion is provided on the bottom surface of the lever member of the throttle lever, the operability of the lever member is extremely good because the tip of the finger just fits into the concave portion. Further, when the wire can be attached to and detached from the throttle lever inside, the handle rod does not become an obstacle, and the workability is greatly improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention, and is a side view showing an entire configuration of a cultivator.

FIG. 2 is a perspective view of the first embodiment of the present invention, showing a configuration of a handgrip portion of a handlebar on the right side of the cultivator and a throttle lever attached to the vicinity thereof.

FIG. 3 is a view showing a first embodiment of the present invention, showing a configuration of a handgrip part of a handlebar on the right side of the cultivator and a throttle lever attached to the vicinity thereof, and operating the operation lever by rotating the engine; It is a perspective view showing the state where it turned and operated in the direction to increase the number.

FIG. 4 is a view showing a first embodiment of the present invention, showing a configuration of a handgrip portion of a handlebar on the right side of the cultivator and a throttle lever attached to the vicinity thereof, and using the throttle lever to rotate the engine; It is a perspective view showing the state where it turned and operated in the direction to increase the number.

FIG. 5 is a diagram showing the first embodiment of the present invention, showing the entire configuration of the tiller,
It is a side view which shows a mode that the tiller greatly leaned forward.

FIG. 6 is a view showing a first embodiment of the present invention, showing a configuration of a throttle lever and its vicinity.

FIG. 7 is a diagram showing the first embodiment of the present invention, showing a configuration of a throttle lever and its vicinity;

FIG. 8 is a perspective view showing a second embodiment of the present invention, showing a configuration of a handgrip portion of a handlebar on the right side of the cultivator and a throttle lever attached to the vicinity thereof.

FIG. 9 is a view showing a third embodiment of the present invention, and is a plan view showing a configuration of a throttle lever attached to a mowing note.

FIG. 10 is a side view showing a configuration of a throttle lever attached to a mowing journal according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tiller main body (working machine main body) 3 Engine 15 Handlebar 17 Stop circuit wiring 19 Handshake part 21 Throttle lever 25 Lever member 28 Switch mechanism part 43 Pressing member (auxiliary operation part) 47 Depression 51 Wire 53 Groove 57 Notch

Claims (9)

[Utility model registration claims] 1. A pair of handle bars extending from a main body of a work machine, the handle bars being detachably attached to one of right and left handle bars, a lever member being rotatably provided, and the lever member being provided in one direction. The rotational speed of the engine of the working machine is increased by rotating the working machine, and the rotational speed of the engine of the working machine is reduced by rotating the lever member in the other direction. A throttle lever for a working machine, characterized in that a throttle part is provided. 2. The throttle lever of a working machine according to claim 1, wherein the auxiliary operating portion is a pressing member projecting substantially at a middle position of the lever member. 3. The throttle lever for a working machine according to claim 1, wherein the lever member is formed to be wide and the end portion is formed to be narrow. 4. The throttle lever of a working machine according to claim 1, wherein a concave portion is formed on a bottom surface of the lever member. 5. The throttle lever of a working machine according to claim 1, wherein a wire is attached to and detached from a side of the lever member opposite to the handle bar. 6. A throttle lever for a working machine according to claim 1, wherein said throttle lever is attached to an inner side surface of a handlebar, and said pressing member is provided on an upper surface side of said lever member. It is protruded, and the rotational speed of the engine of the working machine is increased by rotating the lever member downward, and the rotation of the engine of the working machine by rotating the lever member upward. A throttle lever for a working machine, wherein the number of rotations of the engine of the working machine is reduced by pressing the pressing member in an emergency and rotating the lever member upward in an emergency. 7. The throttle lever for a working machine according to claim 1, wherein the throttle lever is attached to an inner side surface of a handlebar, and the pressing member is provided on a lower surface side of the lever member. It is protruded, and the rotational speed of the engine of the working machine is increased by rotating the lever member upward, and the rotation of the engine of the working machine is rotated by rotating the lever member downward. A throttle lever for a working machine, wherein the number of rotations of the engine of the working machine is reduced by lowering the number and pressing the pressing member to rotate the lever member downward in an emergency. 8. A throttle lever for a working machine according to claim 1, wherein said throttle lever is mounted on an upper surface of a handlebar rod, and said pressing member projects from a right side surface of said lever member. The rotation speed of the engine of the working machine is increased by rotating the lever member to the left, and the rotation speed of the engine of the working machine is increased by rotating the lever member to the right. A throttle lever for a working machine, wherein the rotation speed of the engine of the working machine is reduced by lowering and pressing the pressing member in an emergency to rotate the lever member rightward. 9. The throttle lever for a working machine according to claim 1, wherein the throttle lever is attached to an upper surface of a handlebar rod, and a pressing member is provided to project from a left side surface of the lever member. The rotation speed of the engine of the working machine is increased by rotating the lever member to the right, and the rotation speed of the engine of the working machine is increased by rotating the lever member to the left. A throttle lever for a work machine, wherein the rotation speed of an engine of the work machine is reduced by lowering and pressing a pressing member in an emergency to rotate a lever member to the left.