JPH041068Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a tank tightening device, and is particularly suitable for detachable tank devices such as backpack power spreaders.

Conventional technology In general, backpack power spreaders are used for the purpose of dispersing a wide variety of materials such as powder, granules, granular fertilizers, liquids, and rice seeds, by replacing the metering valve device with a dedicated one. The chemical tank is designed to be detachable from the main body of the aircraft. For this reason, the installation structure between the chemical tank and this machine is complicated, and when connecting with tightening bolts, it is necessary to reliably prevent tightening during work, and tools such as spanners are used to tighten them. This required a lot of effort, force, and experience, such as the need for firm fastening.

Problems to be solved by the invention The present invention solves the problems of the conventional technology, and also makes the structure of the tank simple and reliable, so that it can cope with dimensional changes due to product assembly, dimensional errors, deterioration of packing, etc. The purpose is to provide a tightening device.

Means for Solving the Problems That is, the tank tightening device according to the present invention is a tank tightening device in which a tank is removably attached to a supporting body thereof, and one end of which is pivotably attached to the main body. A fastening lever having an operating portion at the other end thereof, an intermediate member having one end pivotably supported at an intermediate portion of the lever, and an upper end portion thereof being latched to the latching portion on the tank side. and a hook member whose lower end is screwed onto the intermediate member, and a holding member having a pressing portion that lightly holds the flat part of the hook member, so that when tightening, the end shaft support of the lever is attached to the intermediate member. The tightening is maintained beyond the line connecting the shaft support and the locking part, and when the tightening is released, the effective length of the hook member is adjusted by screwing into the intermediate member, and the holding is performed when the hook member is rotated. It is characterized by a configuration in which articulated rotation is imparted to the hook member by engagement of the member with the flat portion of the hook member.

Operation Therefore, the tank tightening device according to the present invention can be used to tighten the tank with this machine by simply hooking the hook member onto the tank side and rotating the tightening lever until the shaft support passes the dead point. It can be integrally attached to a certain support body, and the effective length of the hook member can be adjusted by articulated rotation through engagement between the spring member and the flat part of the hook member, so there is no need to consider the orientation of the hook member, etc. .

Embodiments Hereinafter, the present invention will be described in detail based on embodiments of the drawings.

The illustrated embodiment is an example in which the present invention is applied to a backpack-powered spreader. Although not shown, an engine blower is mounted on a backpack mount, and a chemical tank 2 is detachably provided on the upper part of the support body 1 of the engine blower. .

An upper protrusion 3 provided at the lower end of the drug tank 2 and a lower protrusion 4 provided at the upper end of the support body 1
A flat sliding valve type drug metering valve device 5 is removably provided between the two. The metering valve device 5 is provided with a sliding valve body 6, and a downward U-shaped receiving bracket 8 that can be freely engaged with and detached from a valve driver 7 is fixed to the sliding valve body 6. The left and right ends 9 of the drug metering valve device 5 protrude outward from the sandwiching surface between the drug tank 2 and the support body 1.

A clamping member 10 holding the end 9 of the medicine metering valve device 5 has its upper end pivotally supported by the upper protrusion 3 on a shaft 11. Also, attach the upper end 21 to the lower protrusion 4 on the tightening lever 12.
It is pivotably supported on a shaft 13. As shown in FIG. 2, the tightening lever 12 is formed by bending a plate material into a substantially U-shape, and has two holes formed in each upper part. The upper hole is the shaft 13 of the upper protrusion 3.
, and another shaft 14 is passed through the hole below it. This shaft 14 also pivotably supports an intermediate member 15 and a holding member 16.

Further, the hook member 17 has a hook member formed on the upper part thereof, and is latched using the shaft 11 of the upper protrusion 3 as a latching portion. The lower part of the hook member 17 is formed with a thread, and is screwed into a threaded hole provided at the swinging end of the intermediate member 15. The hook member 17
A flat part 18 is formed in the middle part of the holding member 16, and a pressing part 19 extending from the upper end of the holding member 16 contacts this flat part 18 and lightly holds it. Further, the holding member 16 has a curved portion 20 that presses the holding member 10 on the opposite side of the pressing portion 19 .

These members are arranged as shown in FIG. 2, shafts 13 and 14 are assembled, and assembled as shown in FIG. 3. From the state shown in FIG.
When the tightening lever 12 is pushed in the direction of the arrow after being latched, the tightening state shown in FIG. 1 is achieved.

Here, when looking at the three shafts 11, 13, and 14, the shaft 14 that pivots the intermediate member 15 is not on the line connecting the shaft 11 of the upper projection 3 and the shaft 13 of the lower projection 4; That is, the axis 14 of the intermediate member 15 extends inwardly beyond the dead point on said line, thus maintaining this tightening device. To release the tightening device, pinch the operating part 22 at the lower end of the tightening lever 12 and rotate it upwards, and the shaft 14 of the intermediate member 15 will be rotated outward through the dead point, causing the hook member 17 to move upward. It can be removed from the shaft 11 of the protrusion 3. In this case, the holding member 16 also has the hook member 17.
Since the holding member 10 rotates at the same time, the pressure on the holding member 10 is released. In addition, when the medicine metering valve device 5 is replaced with another one, or when its thickness changes due to deterioration of the packing, the hook member 17 can be rotated by hand to check the threaded state with the intermediate member 15. If the hook member 17 is changed, the length dimension changes according to the rotation of the hook member 17. The rotation of the hook member 17 is caused by the engagement of the flat portion 18 of the hook member 17 with the pressing portion 19 of the holding member 16.
When the hook member 17 rotates beyond 8, the resistance becomes large and the hook member 17 is subjected to an articulated rotation. This articulated rotation can automatically determine and maintain the position of the hook portion of the hook member 17.

Effects of the Invention As can be seen from the above explanation, according to the configuration of the present invention, when tightening, the end shaft support of the tightening lever crosses the line connecting the shaft support of the intermediate member and the locking part, and the tightening is maintained. When the tightening is released, the length of the fastening hook member is adjusted by the threaded part with the intermediate member, and when the hook member is rotated, the engagement of the spring member and the flat part of the hook member causes the hook member to rotate freely. Therefore, with a simple and reliable configuration, the drug tank, drug metering valve device, support body, etc. can be securely fastened to each other with one touch without using tools such as spanners, and the hook member It has great practical effects, such as being able to easily and reliably adjust the effective length.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention applied to a backpack-powered sprayer. Figure 1 is a sectional view of the main parts of the chemical tank tightening device, and Figure 2 is an exploded view showing the arrangement of each member before assembly. A perspective view, and FIG. 3 is a perspective view when the fastening is released. DESCRIPTION OF SYMBOLS 1... Support body, 2... Tank, 11... Locking part, 13, 14... Pivotal support, 12... Tightening lever, 15... Intermediate member, 16... Holding member, 17
... Hook member, 18 ... Flat part, 19 ... Pressing part.

Claims (1)

[Scope of utility model registration request] A tank tightening device in which a tank 2 is detachably attached to a supporting body 1 includes a tightening lever 12 having one end 21 swingably supported on the main body 1 and an operating part 22 at the other end. , an intermediate member 15 whose one end is swingably supported by an intermediate portion of the lever 12;
It has a hook member 17 whose upper end is hooked to the locking part 11 on the tank 2 side and whose lower end is screwed onto the intermediate member 15, and a pressing part 19 which lightly holds the flat part 18 of the hook member 17. and a holding member 16, which supports the end shaft support 1 of the lever 12 during tightening.
3 is the shaft support 14 and the locking portion 11 of the intermediate member 15;
The effective length of the hook member 17 is adjusted by screwing onto the intermediate member 15 when the tightening is released, and when the hook member 17 is rotated, the effective length of the hook member 17 is adjusted by screwing into the intermediate member 15. A tank tightening device characterized in that an articulated rotation is applied to a hook member 17 by engagement with a flat portion 18 of the hook member 17.