JP2002363915A - Engine for rammer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an engine for a rammer capable of more increasing the operability of a main switch. SOLUTION: In a rammer device, the engine 10 for the rammer is installed at the top end part of a rammer body, and a handle is fitted to the upper side of the engine 10 for the rammer. The engine 10 for the rammer comprises the main switch 31 on the outer peripheral surface 20 of the engine at a position over a crankshaft 15 and apart from a cylinder shaft 30. The main switch 31 is connected to a plug cap 18 through a harness 35. The main switch 31 is disposed at the lateral center of the side face 22 of an operator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
er) The present invention relates to a rammer engine that is attached to a main body and applies vibration to a ground plate.

[0002]

2. Description of the Related Art As a rammer device for leveling the ground, for example, Japanese Unexamined Utility Model Publication No. Sho 63-104410, entitled "Engine Directly Connected Rammer" is known. The main part of this technique will be described below with reference to FIG. FIG. 9 is a side view of a conventional rammer device. The rammer device includes a rammer body 10.
0, a handle 101 is provided at the upper end 100a, and an engine 103 is provided.
And a leveling plate 102. In addition, the rammer device is provided with a throttle operation lever 106 by attaching a throttle operation lever 106 near the grip portion 101a of the handle 101.
06 is provided near the operator.

According to this rammer, a handle 101 is provided.
While holding the grip portion 101a of the throttle operating lever 1
The engine 103 is operated to set the engine 103 to a desired rotation speed, and the engine 103 applies an impact to the leveling plate 102 to level the ground 105.

At the end of the leveling work, the engine 103 is set to the idling state by operating the throttle operating lever 106, and then the main switch 108 is turned on with the other hand while holding the grip of the handle 101 with one hand. Switching from (power on) to off (power off) and the engine 103
To stop.

[0005]

However, the main switch 108 is located on the right side of the engine 103,
It is some distance from the grip 101a of the handle 101. Therefore, when the operator switches off the main switch 108, the operation of the operator increases. In addition, even when the engine 103 is in the idling state, the main switch 108 also vibrates because the rammer body 100 and the engine 103 vibrate to some extent. Therefore, some skill is required for the operator to quickly turn off the main switch 108.

As described above, when the main switch 108 is turned off, the operation of the operator becomes large and a certain level of skill is required. Therefore, the operability of the main switch 108 cannot be said to be good. For this reason, improvement in the operability of the main switch 108 has been demanded.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rammer engine capable of improving the operability of a main switch.

[0008]

In order to achieve the above object, a first aspect of the present invention is a rammer engine which is attached to a rammer main body and applies an impact to a leveling plate of the rammer main body. A main switch is provided, and the position of the outer peripheral surface of the engine including the main switch is located above the crankshaft and away from the cylinder shaft.

[0009] When the ground leveling operation is performed by the rammer main body, an impact is applied to the leveling plate while grasping the grip portion of the handle provided at the upper end of the rammer main body, and the ground is leveled by the impact. For this reason, if the main switch is arranged near the grip of the handle, the operator's hand can be placed near the main switch, so that the operator can easily operate the main switch.

Therefore, in the first aspect, the main switch provided on the outer peripheral surface of the engine is disposed at a position above the crankshaft and away from the cylinder shaft, so that the main switch is provided on the upper surface side of the rammer engine. Therefore, by disposing the rammer engine below the handle of the rammer device, the main switch can be disposed near the handle of the handle. Therefore, since the operator's hand can be placed near the main switch, the operator can easily operate the main switch.

In the second aspect of the present invention, a surface facing the output shaft of the crankshaft of the engine outer peripheral surface is a rammer mounting surface, a back surface of the rammer mounting surface is an operator side surface, and the left and right center of the operator side surface. And a main switch is disposed in the switch.

By arranging the main switch at the center on the left and right sides of the operator's side, the main switch can be made to face substantially the center of the handle of the handle. The main switch is located almost in the center of the handle grip, so that the main switch is located in the front center of the operator, so that the operator can easily see the main switch and improve the visibility of the main switch. Can be.

In addition, the left and right hands of the operator can be placed near the main switch by making the main switch face substantially the center of the handle grip. Therefore, the operator can arbitrarily select one of the left and right hands according to the work situation and operate the main switch.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Note that "before", "after",
“Left” and “right” follow the direction seen from the operator. Also, the drawings should be viewed in the direction of reference numerals.

FIG. 1 is a side view of a rammer engine according to the present invention. In the ramming engine 10, a lower case 12 is attached to a lower portion of a cylinder block 11, a piston 13 is slidably inserted into a cylinder portion 11a of the cylinder block 11, and a crank shaft 15 is connected to the piston 13 via a connecting rod 14. Then, a spark portion (not shown) of the ignition plug 16 attached to the cylinder head 11b faces the combustion chamber 17, and a plug cap 18 is attached to the ignition plug 16.
It is covered. The crankshaft 15 includes an output shaft 15
a protrudes from the rammer mounting surface 21 of the engine outer peripheral surface 20.

The rammer engine 10 includes a recoil starter 25 for starting on an operator side surface 22 corresponding to the back of the rammer mounting surface 21, and a left side surface (a front side surface in the figure) 23 of the engine outer peripheral surface 20. The throttle lever 26 is rotatably mounted on a support shaft 27, a return spring 28 is mounted on an upper end of the throttle lever 26, and an operation cable 29 is mounted on a lower end thereof. The main switch 31 is attached to the engine outer peripheral surface 20 at a position away from the engine 22 side.
The main switch 31 is connected to the plug cap 18 via a harness 35. Note that the cylinder shaft 30 is an axis indicating the center of the cylinder portion 11a.

The main switch 31 is connected to the engine upper surface 24.
And an operator's side surface 22 at a corner portion 20 a where the engine is inclined along the engine outer peripheral surface 20. The corner portion 20a is a position that satisfies the condition of the engine outer peripheral surface 20 at a position above the crankshaft 15 and away from the cylinder shaft 30 toward the operator side surface 22 side. Turning on the main switch 31 makes it possible to generate a spark in the spark plug 16, and turning off the main switch 31 stops spark generation from the spark plug 16.

FIG. 2 is a front view of the rammer engine according to the present invention, in which the plug cap 18 and the main switch 3 are mounted.
1 shows a state in which 1 is arranged along a cylinder axis 30 (the left and right center of the operator side surface 22). In this figure, the plug cap 18 is placed on the spark plug 16 (shown in FIG. 1) projecting from the upper surface of the cylinder head 11b (that is, the engine upper surface 24), and the main switch 31 is mounted on the engine upper surface 24.
And the operator side surface 22 at a corner portion 20a where it intersects. Plug main switch 31 into plug cap 1
The main switch 31 can be arranged near the plug cap 18 by arranging it on the engine upper surface 24 as in the case of FIG.

FIG. 3 is a side view of a rammer device provided with a rammer engine according to the present invention. The rammer device 40 is provided with a rammer main body 41 provided with a leveling plate 42 at a lower end 41a, and a rammer engine 10 according to the present invention at an upper end 41b of the rammer main body 41, and a handle 45 above the rammer engine 10. , A fuel tank 51 is mounted substantially at the center of the handle 45, and a protection guard 53 for protecting the fuel tank 51 is mounted in front of the fuel tank 51.
The throttle operation lever 5 is located near the grip 47 of the handle 45.
5 is provided. FIG. 4 shows the handle 45 and the grip 47.
This will be described in detail.

The ramming engine 10 includes a ramming body 41.
By mounting the rammer mounting surface 21 in contact with the upper rear surface 41c of the crankshaft 15, the output shaft portion 15a
Is inserted into the rammer main body 41, and the output shaft portion 15a is connected to an operation mechanism (not shown) of the rammer main body 41.

For this reason, the leveling plate 42 of the rammer main body 41 stands upright on the ground 44, and in this state, the handle 4
By driving the rammer engine 10 while gripping the grip portion 47 of FIG. 5, the operation mechanism of the rammer main body 41 is operated by the output shaft portion 15 a of the crankshaft 15 and an impact is applied to the ground leveling plate 42. Can be leveled.

The rammer main body 41 includes upper right and left side surfaces 41.
Left and right mounting members 61, 61 are attached to d, 41e, respectively, and left and right mounting plates 62, 62 are respectively attached to these mounting members 61, 61 with bolts 63..., upper ends 62a of these mounting plates 62, 62. , 62a, the handle 45 and the mounting plate 6
2 and 62 are connected by left and right reinforcing members 64 and 64.

A fuel tank 51 is mounted at a substantially center of a handle 45 via a support plate 52. Support plate 5
2, the fuel tank 51 is disposed above the handle 45 by providing the left and right legs 52a, 52a, and the interval H from the fuel tank bottom surface 51a to the engine upper end 10a can be set large. By increasing the interval H, even if the handle 45 swings in the direction of the arrow around the left and right mounting members 61 during the leveling work, the fuel tank 5
1 does not interfere with the rammer engine 10.

Also, since the fuel tank 51 is disposed forward of the position of the operator side surface 22 of the ramming engine 10,
The fuel tank 51 can be shifted from the corner portion 20a where the engine upper surface 24 and the operator side surface 22 intersect. Therefore, by attaching the main switch 31 to the corner portion 20a, the main switch 31 can be viewed from above and the main switch 31 can be exposed to the grip portion 47 of the handle 45.

Further, the engine upper surface 24 and the operator side surface 2
By providing the main switch 31 at the corner portion 20 a where the second switch 2 crosses, the main switch 31 can be arranged below the handle 45. For this reason, the handle 45
Can be used together as a protection member for the main switch 31, so that damage to the main switch 31 can be prevented.

In addition, by providing left and right reinforcing members 64, 64 on the left and right sides of the main switch 31, respectively.
Since the left and right reinforcing members 64, 64 can be used together as protective members for the main switch 31, damage to the main switch 31 can be more reliably prevented.

FIG. 4 is a view taken in the direction of arrow 4 in FIG. Handle 4
5 is a front frame 46, a rear frame (that is, a grip portion)
47 and the left and right frames 48 and 49 to form a substantially rectangular frame, the front frame 46 is arranged in front of the rammer main body 41, and the grip portion 47 is arranged behind the rammer engine 10,
This is a member formed such that the left frame 48 is disposed on the left side of the rammer engine 10 and the rammer main body 41, and the right frame 49 is disposed on the right side of the rammer engine 10 and the rammer main body 41. Thus, the handle 45 can be formed to be slightly larger than the rammer engine 10 and the rammer main body 41, and the handle 45 can protect the rammer engine 10 and the rammer main body 41.

The handle 45 has a fuel tank 51 mounted at the center thereof via a support plate 52, a protective guard 53 mounted in front of the fuel tank 51, and a mounting pipe 56 mounted on the left end of the grip portion 47. 56, a throttle operation lever 55 is attached.

This throttle operation lever 55 is
7 can be operated with the left hand while holding the throttle cable 7, and the operation cable 2 can be operated by operating the throttle operation lever 55 as shown by the arrow.
By pulling the cable 9 (inner cable) and turning the throttle lever 26 (shown in FIG. 1) with the operation cable 29 as shown by the arrow, the rotation speed of the rammer engine 10 can be increased. Since the throttle operation lever 55 can be operated while the grip 47 is held with the left hand, the operator can easily operate the throttle operation lever 55.

The position where the main switch 31 is provided is moved to the center of the engine in the left-right direction and on a line extending in the front-rear direction of the engine, that is, on the center line 60 in the front-rear direction of the engine (left-right center of the operator's side). The main switch 31 is inclined so as to be along the engine outer peripheral surface 20 at this position (that is, the surface 32 of the main switch 31 faces the grip portion 47 of the handle 45). (In a state of being inclined). Therefore, the main switch 31 can be brought closer to the grip portion 47 of the handle 45, and the main switch 31 can be opposed to the substantially central portion 47a of the grip portion 47 of the handle 45.

FIG. 5 is a view taken in the direction of the arrow 5 in FIG. 3, in which left and right mounting members 61, 61 are mounted on the left and right side surfaces of the rammer main body 41, respectively. The handle 45 is attached to the upper ends 62a, 62a of the attachment plates 62, 62, and the left frame 48 of the handle 45 and the left attachment plate 62 are connected by the left reinforcing member 64. The right mounting plate 62 and the right reinforcing member 64
Indicates a connected state. By including the vibration isolating members (not shown) in the left and right attachment members 61, 61, the handle 45 can be swung around these attachment members 61, 61.

In this figure, the ignition plug 16 (shown in FIG. 1) is arranged on the engine upper surface 24, the choke lever 71 is arranged on the engine upper surface 24 side, and the fuel cock 72 is arranged on the engine upper surface 24 side. In addition, the main switch 31 is arranged on the engine upper surface 24. As described above, since the ignition plug 16, the choke lever 71, the fuel cock 72, and the main switch 31 are collectively arranged on the engine upper surface 24 side, operability and maintainability can be further improved.

The choke lever 71 is, for example, a lever for increasing a fuel supply amount in order to compensate for a decrease in the vaporization rate when starting the rammer engine 10. Fuel cock 72
Is a cock for opening and closing a tube 73 for supplying fuel from the fuel tank 51 to the rammer engine 10.

FIG. 6 is a view taken in the direction of the arrow 6 in FIG. 3, and shows a state where the main switch 31 is attached to the corner portion 20a of the ramming engine 10. The main switch 31 is a rotary switch that has a substantially cylindrical shape, has a linear indicating portion 33 at the center, and turns on / off the power by rotating as indicated by an arrow. When the main switch 31 is turned on, for example, the main switch 31 is rotated counterclockwise to set the tip of the indicator 33 to the on position. On the other hand, when the main switch 31 is turned off, for example, the main switch 31 is rotated clockwise to set the tip of the indicator 33 to the off position.

The main switch 31 is connected to the plug cap 18 via the harness 35. Then, the harness 35 is fixed to the engine upper surface 24 with the harness clip 36. At this time, the harness 35 can be protected by attaching the grommet 37 to the harness 35.

By attaching the main switch 31 to the corner 20a of the ramming engine 10, the main switch 31 can be arranged near the plug cap 18. Therefore, the main switch 31 and the plug cap 1
8 can be shortened, and the number of harness clips 36 and grommets 37 can be reduced, which can contribute to cost reduction.

Next, the operation of the rammer engine 10 when leveling with the rammer device 40 will be described with reference to FIGS. FIGS. 7 (a) and 7 (b) show a first operation of the rammer engine according to the present invention. FIG. 7 (a) shows an embodiment.
(B) shows a comparative example. In (a), a main switch 31 is attached to a corner portion 20a where an engine upper surface 24 and an operator side surface 22 intersect. In addition, the fuel tank 51
At the front of the corner 20a. This allows
The operator 75 holds the grip 47 of the handle 45 with the left and right hands 76,
When holding the ground with 77 and performing the ground leveling operation, the operator 75 can visually observe the main switch 31 as indicated by the arrow in the working posture.

In addition, the operator 75 can operate the main switch 31 in the working posture by bringing the main switch 31 near the grip 47 and facing the grip 47. As a result, the operator 75 can operate the main switch 31 with a small number of operations.

In (b), the rammer engine 110
The main switch 113 is mounted near the crankshaft 112 on the right side surface 111 (the rear side surface in the figure), so that when the main switch 113 is visually observed as indicated by an arrow, it is necessary to check the main switch 113 to some extent. Become skilled.

In addition, by mounting the main switch 113 on the right side 111 of the ramming engine 110 near the crankshaft 112, the left and right hands 116,
The main switch 113 moves away from the main switch 117. For this reason, when operating the main switch 113, the operator 11
5 becomes large.

FIGS. 8 (a) and 8 (b) illustrate a second operation of the rammer engine according to the present invention. FIG. 8 (a) shows an embodiment and FIG. 8 (b) shows a comparative example. 3A, the main switch 31 can be brought closer to the grip 47 of the handle 45, and the main switch 31 can be moved to the grip 4 of the handle 45.
7 was made to face the substantially central portion 47a.

For this reason, the main switch 31 can be disposed substantially at the center of the left and right hands 76 and 77, so that the operator 75 can appropriately select one of the left and right hands 76 and 77 according to the work situation. The main switch 31 can be operated by selecting and moving like an arrow. further,
Since the left and right hands 76 and 77 can be placed near the main switch 31, the operator 75 can easily operate the main switch 31 in the working posture. As a result, the operator 75 can operate the main switch 31 with a small operation.

In addition, by disposing the main switch 31 near the plug cap 18, the main switch 31
The harness 35 connecting the plug cap 18 to the plug cap 18 can be shortened, and the number of harness clips 36 and grommets 37 can be reduced. As a result, it is possible to contribute to cost reduction of the rammer engine 10.

Since the operator 75 can operate the throttle operation lever 55 as shown by the arrow while holding the grip portion 47 with the left hand 76, the operator 75 can easily operate the throttle operation lever 55. can do.

In (b), the rammer engine 110
The right side surface 111 of the crankshaft 112 (see FIG. 7B)
The main switch 113 is separated from the grip 114a of the handle 114 by mounting the main switch 113 near the. For this reason, the grip portion 114 of the handle 114
When operating the main switch 113 with the right hand 117 holding “a”, the right hand 117 is moved downward as indicated by the arrow. Therefore, the operation of the operator 115 increases. In addition,
Since the main switch 113 is too far from the left hand 1116, the main switch 113 cannot be operated with the left hand 116.

In addition, since the main switch 113 is disposed at a position distant from the plug cap 118, the harness 119 connecting the main switch 113 and the plug cap 118 becomes longer, and the harness 11
This increases the number of harness clips and grommets used for fixing the fixing member 9. As a result, it becomes a factor that hinders the cost reduction of the rammer engine 110.

In the above-described embodiment, an example has been described in which the main switch 31 is mounted on the corner portion 20a where the engine upper surface 24 and the operator side surface 22 intersect. However, the mounting position of the main switch 31 is not limited to this. Don't
The engine outer peripheral surface 20 may be located above the crankshaft 15 and farther away from the cylinder shaft 30 toward the operator side surface 22.

In the above-described embodiment, a rotary switch has been described as an example of the main switch 31. However, the present invention is not limited to this, and other switches such as a toggle switch and a push switch can be used as the main switch.

[0049]

According to the present invention, the following effects are exhibited by the above configuration. According to the first aspect of the present invention, the main switch provided on the outer peripheral surface of the engine is disposed at a position above the crankshaft and away from the cylinder shaft, so that the main switch is provided on the upper surface side of the rammer engine.

For this reason, by disposing the rammer engine below the handle, the main switch can be disposed near the grip of the handle so that the operator's left and right hands can be placed near the main switch. did. Therefore, the operator can easily operate the main switch.

According to a second aspect of the present invention, the main switch is disposed at the center of the left and right sides of the side surface of the operator, so that the main switch can be made to face substantially the center of the handle grip. For this reason, the visibility of the main switch can be improved because the main switch is located at the front center of the operator during the leveling work.

In addition, the left and right hands can be placed near the main switch by making the main switch face substantially the center of the handle grip. Therefore, the operator can arbitrarily select one of the left and right hands according to the work situation and operate the main switch. As a result,
The operator can operate the main switch more easily.

[Brief description of the drawings]

FIG. 1 is a side view of a rammer engine according to the present invention.

FIG. 2 is a front view of a rammer engine according to the present invention.

FIG. 3 is a side view of a rammer device provided with a rammer engine according to the present invention.

FIG. 4 is a view taken in the direction of arrow 4 in FIG. 3;

FIG. 5 is a view taken in the direction of arrow 5 in FIG. 3;

FIG. 6 is a view taken in the direction of arrow 6 in FIG. 3;

FIG. 7 illustrates a first operation of the rammer engine according to the present invention.

FIG. 8 illustrates a second operation of the rammer engine according to the present invention.

FIG. 9 is a side view of a conventional rammer device.

[Explanation of symbols]

10 ... Rammer engine, 15 ... Crankshaft, 15a ...
Output shaft part, 20 ... engine outer peripheral surface, 21 ... rammer mounting surface, 22 ... operator side surface, 24 ... engine upper surface, 30 ... cylinder shaft, 31 ... main switch, 40 ... rammer device,
41: Rammer body, 42: Leveling plate, 60: Center line in the front-rear direction of the engine (left and right center of operator's side).

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masanori Tsubouchi 1-4-1 Chuo, Wako-shi, Saitama F-term in Honda R & D Co., Ltd. (Reference) 2D043 CA15 CB04 2D052 AD05 AD13 AD15 BC02

Claims (2)

[Claims] 1. A rammer engine which is attached to a rammer main body and applies a shock to a leveling plate of the rammer main body. The rammer engine includes a main switch on an outer peripheral surface of the engine. A rammer engine characterized by being located above the crankshaft and away from the cylinder shaft. 2. A portion of the outer peripheral surface of the engine facing the output shaft portion of the crankshaft is defined as a rammer mounting surface, and a rear surface of the rammer mounting surface is defined as an operator side surface. 2. The engine according to claim 1, wherein the main switch is disposed.