JPS6215101Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention relates to a handle device for a management machine that can perform weeding during weeding in orchards, sloped lands, etc.

(b) Prior Art Conventionally, the handle of a management machine has been made horizontally rotatable back and forth, and also vertically to adjust the height, and has a locking device for the horizontal rotation and vertical movement. The technology that allows the release and setting to be operated from the handlebar is known to the public.

For example, see Utility Model Publication No. 48-10726.

(c) Problems to be solved by the invention However, in the conventional technology, the fixation of the handle after adjusting the horizontal rotation is done by using a single screw in a notch provided on the outer periphery of the horizontal rotation support frame on the transmission case side. Previously, this was done by simply fitting the locking piece, so when cultivating in this condition, play would occur between the notch and the locking piece, causing the handle to rattle horizontally. There was.

The present invention is designed to prevent the handle from rattling when the horizontal rotation is locked.
It is composed of a chrysanthemum seat that can be securely fastened and a cam body that presses the chrysanthemum seat, thereby eliminating shaking of the handle during tilling work.

In addition, if the cam body is located at one location with respect to the columnar body that is the center of rotation of the handle, the pressing force of the chrysanthemum seat will be biased, so in this invention, it is arranged at a symmetrical position with respect to the columnar body. It is something.

(d) Means for solving the problem The purpose of the present invention is as described above. Next, the configuration for achieving the purpose will be explained.

A downward chrysanthemum seat 3 is mounted on the lower surface of the vertical movement support frame 2 which pivots the handle base body 24 at the tip of the handle 1 and is provided parallel to the upper surface of the horizontal rotation support frame 11.
is configured to be able to freely engage with the upward chrysanthemum seat 4 provided on the upper surface of the horizontal rotation support frame 11, and protrudes from the horizontal rotation support frame 11 on the handle center line XX running in the front-rear direction in plan view. A cam body 6 that projects the vertically movable columnar body 5 to an upper position from the vertically movable support frame 2 and is pivotally supported on the vertically movable support frame 2.
is rotated between the cam follower 14 provided on the protrusion of the columnar body 5 and the vertical movement support frame 2, thereby pressing the downward chrysanthemum seat 3 downward, and the upward chrysanthemum seat 4
The cam body 6 is formed into a U-shape in plan view, and the cam body 6 and the cam follower are arranged at symmetrical positions across the handle center line XX. 14 is configured so that they come into contact with each other.

(e) Embodiments and operations The purpose and structure of the present invention are as described above, and the detailed structure of the present invention will be explained based on the embodiments shown in the attached drawings.

FIG. 1 shows a side view of the orchard area management machine, in which an engine E is installed on one side in the front and rear direction of a transmission case 9 having both wheels 8, and a bolt 10 is attached to the upper part of the transmission case 9, which is the upper part of the machine. A horizontal rotation support frame 11 is fixedly installed.

The horizontal rotary support frame 11 is extended so that the rotary working machine 12 can be fixedly installed in this part.

A horizontal upward chrysanthemum seat 4 having a planar annular shape is fixed on the upper surface of the horizontal rotation support frame 11, and the horizontal rotation support frame 1 is located inside the upward chrysanthemum seat 4.
A round bar-shaped column 5 fixed via a mounting bracket 13 is vertically erected on the upper surface of the column 1, and a disk-shaped cam follower 14 is horizontally arranged on the upper end surface of the column 5. It is fixed by

Further, above the horizontal rotation support frame 11, the vertical movement support frame 2 is arranged so as to be horizontally rotatable with its center part loosely fitted to the outer periphery of the columnar body 5. The upward chrysanthemum seat 4 is located at the center of the vertical movement support frame 2.
A flat annular downward facing chrysanthemum seat 3 is fixedly installed in correspondence with and meshed with.

A compression spring 16 is interposed between the vertical movement support frame 2 and the cam follower 14 fixed to the tip of the columnar body 5 so that the downward chrysanthemum seat 3 and the upward chrysanthemum seat 4 are always in an engaged state. are doing.

Next, the details of the horizontal rotation fixing device will be explained.

The columnar body 5 is erected from the horizontal rotation support frame 11 on the rotation center of the handle 1 on the handle center line XX in FIG. A cam body 6 is arranged around the columnar body 5. The cam body 6 is formed into a U-shape from side to side, and is connected by a connecting portion 6a. Support pins 17 protrude from both sides of the U-shape of both cam bodies 6,6. the support pin 17,
17 are fitted into recesses 18, 18 provided on both sides of the vertically movable support frame 2.

The cam bodies 6, 6 are pivoted in a direction orthogonal to the columnar body 5, and the outer peripheral cam surface portions of the cam bodies 6, 6 are downwardly facing the chrysanthemum seat 3.
A tension spring 21 is provided so as to be connected to the upper surface and the lower surface of the cam follower 14, a pin 19 is provided protruding toward the side of one cam body 6, and a tension spring 21 is provided between the pin 19 and the fulcrum pin 20 at one end of the vertical movement support frame 2. is interposed.

The wire 22 connected to the pin 19 is connected to the tension spring 2
The handle 1 extends in the opposite direction to the handle 1 and is inserted into the wire receiver 23 at the end of the vertical movement support frame 2.
A horizontal rotation operation lever 7 provided in the loop portion 1a of
Connect the wire 22 to.

The handle 1 is formed into a loop shape, extends to the front of the columnar body 5, and the handle base body 24 is connected to the support pin 20 of the vertical movement support frame 2.
It is centrally supported by

Next, the details of the vertical movement fixing device will be explained.

A plate body 25 is fixed in the vertical direction below the center side of the handle base body 24 away from the support pin 20 side, and a large number of adjustment holes 26 are bored in the plate body 25 at intervals in the vertical direction. A knock pin 28, which is fitted into a cylindrical metal 27 fixed to the upper end of the vertical movement support frame 2, is configured to be able to engage with each adjustment hole 26 so as to be able to move in and out.

In addition, the pin 2 in the vertical movement support frame 2
9, one end of the lever 30 is connected to the other end of the knock pin 28 via a pin 31, and the pin 32 at the other end of the lever 30 and one side of the support pin 17 are pulled. A wire 34 connected via a spring 33 and extending in the opposite direction of the tension spring 33 is connected to the pin 32, and the wire 34 is inserted into the wire receiver 35 to tighten the handle 1.
The vertical movement operating lever 3 provided in the loop portion 1a of
6 is connected and configured.

The above-mentioned configuration management machine is capable of weeding during weeding in orchard areas and sloped lands, and normally, as shown in FIGS. 3, 4, and 6, both cam bodies 6, 6 pulled by a tension spring 21 are When turned vertically in the longitudinal direction, the upper part of the cam bodies 6, 6 is joined to the lower surface of the cam follower 14, and the lower part is connected to the upper surface of the downward chrysanthemum seat 3, and the downward chrysanthemum seat 3 is pressed downward, and both chrysanthemum seats are formed. 3,4
The engagement is fixed, and the handle 1 is locked so that it cannot be rotated in the horizontal direction.

When adjusting the handle 1 by rotating it in the horizontal direction according to the work, when the horizontal rotation operation lever 7 is operated and the wire 22 is pulled, both cam bodies 6 are supported against the tension spring 21. While rotating around the pins 17, 17, the longitudinal direction becomes horizontal, resulting in the state shown in FIG. , 6, the strong pressing force is released,
As it is, the handle 1 can be rotated in the horizontal direction as shown by arrow A around the columnar body 5, and when the lever 7 is released at the desired position, the tension force of the tension spring 21 will cause the handle 1 to rotate in the horizontal direction as shown in FIGS. 3 and 4. And as shown in FIG. 6, both cam bodies 6, 6 are rotated so that the longitudinal direction becomes the vertical direction, and the downward chrysanthemum seat 3 is strongly pressed downward to be engaged and fixed with the upward chrysanthemum seat 4, The handle 1 can be locked.

In this way, the handle 1 can be freely rotated in the horizontal direction by operating the horizontal rotation control lever 7.
By engaging with the rotation prevention body 38 on the side of the downward chrysanthemum seat 3, the rotation can be restricted at a certain position. This configuration constitutes a horizontal rotation fixing device.

Also, if you operate the vertical movement control lever 36 and pull the wire 34 while resisting the tension spring 33,
As the lever 30 rotates, the dowel pin 28 comes out of the adjustment hole 26 as shown in FIG. , when you let go of the lever 36, the tension spring 33
The tension force causes the dowel pins 28 to enter and lock into the corresponding adjustment holes 26. This configuration constitutes a vertical movement fixing device.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, in the conventional technology described in Japanese Utility Model Publication No. 48-10726 and Japanese Utility Model Publication No. 53-12648, a horizontal rotation support frame is used as a device to lock the handle after horizontal rotation. Since it is locked by the engagement of only the provided notch and one locking piece provided on the vertical movement support frame side, this notch and the locking piece can be removed while plowing in the locked state. There was a gap between the two, which caused the handle to rattle and sway due to engine vibration.

In contrast, in the present invention, a downward chrysanthemum seat 3 and an upward chrysanthemum seat 4 are arranged between a horizontal rotation support frame 11 that performs horizontal rotation and a vertical movement support frame 2, and It is fixed by tightening, so
The tightening condition is secure and there is no rattling or vibration during tilling work.

Second, the cam body 6 that urges the downward chrysanthemum seat 3
Since the cam body 6 is constantly pressed, the cam body 6 can always maintain the pressed state, and even if vibration occurs, the cam body 6 will further rotate in the direction of tightening the cam body 6.
Furthermore, the fixing force can be increased.

Thirdly, the cam body 6 has a downward chrysanthemum seat 3 and an upward chrysanthemum seat 4.
Since they are placed in two symmetrical locations with respect to the center of the diaphragm, and pressure is applied from both sides at the same time, there is no deviation in the tightness of the downward chrysanthemum seat 3 and the upward chrysanthemum seat 4, and the chrysanthemum seat is always balanced. It can be pressed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Figure 1 is a side view of the management work machine, Figure 2 is a plan view of the handle, and Figure 3 is a side view of the management work machine.
The figure is a side view of the main part, Figure 4 is a sectional view of that part,
Fig. 5 is a plan view of the main parts, Fig. 6 shows a part of Fig. 3, Fig. 7 is an explanatory diagram of the operation of Fig. 6, and Fig. 8 is an explanatory diagram of the operation showing a part of Fig. 4. It is. 1...handle, 1a...handle loop part,
2... Vertical movement support frame, 3... Downward chrysanthemum seat,
4... Upward chrysanthemum, 5... Columnar body, 6... Cam body,
7...Horizontal rotation operation lever, 11...Horizontal rotation support frame, 14...Cam follower, 20...
Fulcrum pin, 24... Handle base body, 28... Knock pin, 36... Vertical movement operation lever, X-X
...Handle center line.

Claims (1)

[Scope of utility model registration request] A downward chrysanthemum seat 3 is mounted on the lower surface of the vertical movement support frame 2 which pivots the handle base body 24 at the tip of the handle 1 and is provided parallel to the upper surface of the horizontal rotation support frame 11.
is configured to be able to freely engage with the upward chrysanthemum seat 4 provided on the upper surface of the horizontal rotation support frame 11, and protrudes from the horizontal rotation support frame 11 on the handle center line XX running in the front-rear direction in plan view. A cam body 6 that projects the vertically movable columnar body 5 to an upper position from the vertically movable support frame 2 and is pivotally supported on the vertically movable support frame 2.
is rotated between the cam follower 14 provided on the protrusion of the columnar body 5 and the vertical movement support frame 2, thereby pressing the downward chrysanthemum seat 3 downward, and the upward chrysanthemum seat 4
The cam body 6 is formed into a U-shape in plan view, and the cam body 6 and the cam follower are arranged at symmetrical positions across the handle center line XX. A management machine characterized in that it is configured so that 14 contacts.