JPS6328063Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a walking management machine, and more particularly to a structure for connecting a handle and a hitch of the walking management machine.

Conventionally, when configuring the handle/hitch connection structure of a walking management machine, for example, as shown in FIG. Connection bosses 13 fixed to the upper and lower parts of the transmission case 1
a or 13b, and the cylindrical member 1
A hitch bracket 7a consisting of a pair of left and right plate-like bodies to which a hitch 7 for attaching a tillage resistance rod etc. is fixedly connected is fixed to the handle base rod 5a that is fitted and connected to the handle base rod 5a, and is integrally formed with the upper side connecting bracket 14a. Connecting bracket 14c to handle base rod
is inserted between the two plate-shaped bodies of the hitch bracket 7a, and the two plate-shaped bodies and the handle base lever connecting bracket 14c are tightened and connected with bolts, and then the handle 5 and the hitch are connected. 7 was configured to be connected and fixed to the machine. However, a large number of brackets 14a, 14b, 14c, 7a are attached to the cylindrical member 10 and the handle base rod 5a.
Since the structure is extremely complicated, manufacturing efficiency is reduced, and both connecting brackets 14a, 14b and both connecting bosses 13a, 13 are attached.
Due to the backlash at the bolt connection with b, there were problems such as the handle 5 and the hitch 7 also having backlash.

In view of the above-mentioned conventional situation, the purpose of the present invention is to simplify the structure in which the handle and the hitch are connected through rational improvements, improve the strength of the structure itself, and improve the structure of the connection structure. The object of the present invention is to prevent the handle and the hitch from rattling by firmly attaching the transmission case to the transmission case on the side of the machine, and to improve the reinforcing strength of the transmission case on the side of the machine.

The characteristic structure of the present invention is that the rear ends of a pair of left and right plates facing each other with an approximately constant interval are connected by an attachment mounting boss, and a handle rod is removably inserted and connected between the two plates. A handle attachment boss is provided, and connection bosses provided at the upper and lower parts of the transmission case of the present invention are inserted between the two plates at the upper and lower front ends of the two plates, and are secured by tightening with bolts.

In other words, the rational structure is such that the rear ends of a pair of left and right plates facing each other with an approximately constant interval are connected by a boss serving as an attachment mounting hitch, and a handle mounting boss is provided between the front and rear of both plates. A handle connecting tool with a hitch is constructed, and the handle connecting tool is attached to the transmission case of this machine by inserting the connecting bosses provided at the upper and lower parts between the two plates at the upper and lower front ends of the two plates, and then tightening the bolts. Since it uses a rational connection structure in which the parts are connected by tightening and fixing, a large number of brackets made of separate members are fixed to the handle mounting boss and the handle base rod, as in the conventional structure described above. Compared to configuring a handle/hitch connecting tool using a single handle, the structure can be greatly simplified, and the strength of the handle connecting tool itself is greatly improved due to the action of the two plates that form the main body. Moreover, since the two plates are tightened and fixed with bolts to both connecting bosses inserted between them, with the handle mounting boss serving as the reaction force fulcrum, the handle connecting tool can be easily fixed. It can be firmly connected to the transmission case of this machine, suppressing rattling at the bolt connection part, and avoiding rattling of the handle and hitch. Due to the great strength of the handle connecting tool itself, we were able to significantly improve the reinforcing strength of the transmission case of the control machine, which is generally formed in a constricted shape between the upper and lower middle parts. In short, overall, the handle and hitch of the walking management machine are extremely excellent in terms of joint strength of the handle and hitch, as well as reinforcement strength for the machine's transmission case.
It has now been possible to provide a hitch connecting structure that is extremely advantageous in terms of manufacturing.

Next, embodiments of the present invention will be described in detail based on illustrative drawings.

As shown in FIG. 1, a drive axle 3 has a pair of left and right tilling rotors 2, which are an example of a working device, attached to the lower end of a transmission case 1 that is constricted in the middle of the upper and lower parts.
A prime mover 4 is connected to the upper part of the transmission case 1, and a pair of left and right operating handles 5 and an attachment type tillage resistance rod 6 are connected via a handle connecting tool 8 with an attachment mounting hitch 7. is removably attached to the transmission case 1,
Finally, it is configured as a walking management machine.

As shown in FIG. 2, the handle connecting tool 8 with the hitch 7 is made up of a pair of left and right trapezoidal steel plates 9, 9 facing each other with a substantially constant interval.
Handle mounting in which the rear ends are fixedly connected to each other via a vertical boss 7 serving as an attachment mounting hitch, and a handle base rod 5a having a pair of left and right operating handles 5 is inserted and connected in a removable manner. A boss 10 is placed at the front and rear intermediate portions of both plate materials 9,9.
A partition member 11 is positioned and fixed between the two plates 9, 9, and a square attachment is provided between the partition member 11 and the hitch boss 7 at the front and rear intermediate positions of the hitch boss 7 and the handle attachment boss 10. Horizontal connection bosses are fixedly installed on the inner surfaces of both plates 9, 9 in a state in which a connecting hole 12 is formed, and further provided at the upper and lower front ends of both plates 9, 9 at the upper and lower parts of the transmission case 1. Opposing connecting bracket parts 14a, 14b for 13a, 13b are integrally formed, and with both connecting bosses 13a, 13b being engaged between both plate materials 9, 9, opposing connecting bracket parts 1 are formed separately for upper and lower parts.
4a, 14b and connecting bosses 13a, 13b, and the handle connecting tool 8 is fixedly connected to the transmission case 1 by the tightening action of the bolts 15a, 15b and nuts 16a, 16b. . Then, the lock bolt 18 is inserted from the lock bolt hole formed in both plates 9, 9 and the handle attachment boss 10 to the lock bolt hole of the handle base rod 5a, and the operating handle 5 is attached. Lock bolts 19a and 19b are screwed onto each hitch boss 7 so that various attachments can be set and fixed at appropriate heights.

In other words, the handle attachment boss 10 and the hitch boss 7 are also used as connecting members between the two plates 9, 9,
In addition, the hitch 7 has a rational structure in which the opposing connecting brackets 14a, 14b for the connecting bosses 13a, 13b of the power transmission case 1 of the present machine are integrally formed on the plates 9, 9 by using the opposing plates 9, 9.
By configuring the attached handle connection tool 8,
The structure in which the handle 5 and the hitch 7 are connected to the machine is simplified, and both plates 9 and 9 as the main body are simplified.
By the action of 9, the handle connecting tool 8 with hitch 7 is
In order to improve its own strength, both plate members 9, 9 are tightened and fixed with bolts 15a, 15b with the handle attachment boss 10 serving as a reaction force fulcrum against the connecting bosses 13a, 13b inserted between them. As a result, the handle connecting tool 8 can be firmly connected to the transmission case 1, preventing the handle 5 and the hitch 7 from wobbling, and further increasing the strength of the handle connecting tool 8 itself and the transmission case 1.
The construction is such that the reinforcement strength of the constricted portion at the upper and lower intermediate portions of the transmission case 1 can be improved by the strong connection to the transmission case 1.

The specific shape of both plates 9, 9 can be changed in various configurations, and the handle base rod 5a inserted into the handle connection boss 10 and the hitch boss 7 can be modified in various ways.
The locking structure for the attachment side connector can also be modified in various ways.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the walking management machine according to the present invention, and FIG. 1 is an overall side view of the walking management machine;
FIG. 2 is an enlarged perspective view of the main parts, and FIG. 3 is an enlarged side view showing a conventional example. 1...Transmission case, 5a...Handle bar, 7...
...Hitsuchi, 9...Plate material, 10...Handle mounting boss, 13a, 13b...Connection boss, 15a, 1
5b...Bolt.

Claims (1)

[Scope of utility model registration request] Attachment mounting bosses 7 are attached to the rear ends of a pair of left and right plates 9, 9 facing each other with an approximately constant interval.
At the same time, a handle attachment boss 10 is provided between the front and rear of both plates 9, 9 to connect the handle rod 5a in a detachable manner.
3b is inserted between the two plate materials 9, 9 at the upper and lower front ends of the two plate materials 9, 9, and the bolt 15
A walking management machine characterized by being tightened and fixed with a and 15c.