JPH0449224Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a variable-handle snow blower used for snow removal work in which the mounting angle and length of the handle attached to the snow blower body can be changed. be.

[Conventional technology and its problems]

Conventionally, snow removers larger than scoops used for snow removal work have a bottom plate a and a back plate b, as shown in Figure 5.
The operating handle d is fixed at a predetermined angle to a ship bottom-shaped snow remover main body A consisting of a side plate c' having a blade-shaped tip c'.

In snow removal work, the main body A, that is, the blade-like portion c', is inserted horizontally or diagonally into the snow, the snow is shoveled into the main body, and then the snow is carried and thrown away by operating the handle.

The preferred method of using a snow blower is, for example,
As shown in the figure, the handle angle α can be changed freely depending on the task, including the handle angle α for shoveling snow, the handle angle β for transporting snow, and the handle angle γ for dumping snow. Yes (α<β<γ).

However, since the handle angle of conventional snow removers is fixed, it is difficult to operate the snow remover, which reduces work efficiency. Furthermore, since the length of the handle is constant, users of different heights are forced to take an awkward posture.

On the other hand, in terms of storage and storage of the snow blower, the handle is fixed, so the storage space becomes larger.
It was inconvenient.

This invention solves the above problems and is a variable handle snow blower with a simple structure and easy to use, which allows you to change the handle angle depending on the work content and the handle length depending on the user's height. The aim is to provide an opportunity.

[Means for solving problems]

In order to solve the above problems, the variable handle snow blower for snow removal work has been developed according to the present invention, which has a bottom plate,
A snow blower main body consisting of a back plate and side plates, a variable ring rotatably attached to the rear part of the side plate and variable to multiple angular positions, a telescoping handle connected to the variable ring, and a back plate. The fixing and releasing mechanism is attached to the outer surface and fixes the variable ring in one of a plurality of angular positions to restrict rotation of the handle, and releases the fixation to enable the variable ring to be varied.

The variable ring has a plurality of locking holes drilled at a predetermined angle from the center of rotation along its periphery, and a trough on the outer periphery opposite to the locking holes forms a groove in each of the locking holes. and a plurality of positioning teeth positioned diagonally, and the positioning teeth mesh with a locking spring fixed to the side plate.

The fixing and releasing mechanism includes an operation plate that is always biased upwardly by a spring along the back plate and is movable up and down, and has a pair of left and right guide grooves arranged in an approximately figure-eight shape, and one end of which is free from the guide grooves. A pair of left and right locking rods are fitted and whose middle portions are supported by horizontal guides on the side plates, and when the operation plate is in the raised position, the tips of the locking rods penetrate the locking holes to rotate the variable ring. When the operation plate is in the lowered position, the locking rod retreats and leaves the locking hole, allowing the variable ring to rotate.

[Effect]

With the above configuration, the handle of the snow blower can be freely changed to any one of a plurality of angular positions by means of the variable ring and the locking and releasing mechanism.

Therefore, the angle of the handle can be set to the most convenient position according to the snow removal work.
It also helps improve work efficiency and prevent excessive fatigue.

This effect is because the handle is telescopic.
This will be further facilitated by making the length suitable for the user's height.

Furthermore, when the operating plate provided on the back plate is pressed down with a foot, for example, the locking rod moves back and leaves the locking hole of the variable angle ring, so that the angle of the handle can be changed. At this time, the positioning teeth of the variable angle ring engage with the locking spring and move step by step, ensuring that the center axes of the locking hole and the locking hole are aligned, so there is no need to visually check each time, and there is no need to step away from the operation plate. When you remove it, it will rise due to the spring,
Automatically becomes locked.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a snow blower according to the present invention.

The main body 1 of the snow blower is made of rust-free steel such as stainless steel, and has a boat bottom shape consisting of a bottom plate 1a, a back plate 1b, and side plates 1c on both sides having blade-shaped tips. The rear end portion of the side plate 1c extends to protrude from the back plate 1b, and the outer edge of the extended portion 1d is arcuate and the upper portion is formed at a right angle.

Reference numeral 2 denotes a variable angle ring for adjusting the angle of the telescoping handle 5, which is rotatably attached to the extension portion 1d with a pin bolt 3.

As shown in FIG. 2, the variable angle ring 2 includes:
Along its periphery, a plurality of locking holes 2a (in the illustrated example
A total of four holes are bored at 30° intervals, and positioning teeth 2b are provided on the outer peripheral edge on the opposite side from these locking holes 2a. The valley portion 2c of the positioning tooth 2b is
It is located diagonally to each locking hole 2a, and is engaged with a lock spring 4 made of a plate spring fixed to the side plate 1c at the valley portion 2c.

The telescoping handle 5 consists of a support pipe 6 joined to the variable angle ring 2, an operating pipe 7 telescopically inserted into the support pipe 6, and a handle 8 connecting the operating pipes 7 on both sides. FIG. 3 shows the expansion/contraction adjustment parts of the support pipe 6 and the operation pipe 7. That is, a male thread 6a is provided on the outer periphery of the upper end of the support pipe 6, and a cylindrical stopper 9 having a vertical cut 9a is provided.
and carve a female thread 10a on the inner circumference of this,
A cap 10 having a through hole 10b for the operating pipe 7 is attached to the upper bottom portion, and by tightening the cap 10, the operating pipe 8 inserted into the support pipe 6 through the stopper 9 is fixed.

Reference numeral 11 denotes a fixing and releasing mechanism, which, as shown in FIG. 4, includes an operating plate 12, a spring 13, and a pair of left and right locking rods 14.

The operation plate 12 has a vertically elongated slide groove 12 in the center.
a, a plate body provided with a pair of guide grooves 12b arranged in an eight-shape on both left and right sides and an operating lever 12c at the upper center, and a back plate 1 in the slide groove 12a;
Loosely fit the implanted pin 15 into the operating lever 12.
c is supported by a guide frame 16 fixed to the back plate 1b, and spring supports 1 on both left and right sides of the lower part of the back plate 1b
By fixing the tips of the two left and right springs 13 fixed to the operation plate 12 to the spring receivers 12d protruding from the operation plate 12, the springs 13 are always urged upward and move freely up and down along the back plate 1b. It is structured as follows.

The locking rod 14 has an intermediate portion supported by a horizontal guide 18 fixed to the back plate 1b, a base end loosely fitted into the guide groove 12b of the operation plate 12 by a pin 19, and a tip end that allows the operation plate 12 to rise. It penetrates into the locking hole 2a of the variable angle ring 2 at this position. The tip of the locking rod 14 is rounded and tapered to facilitate alignment with the locking hole 2a. In addition, 20 is the side plate 1
This is a through hole of the locking rod 14 provided in the extending portion 1d of c.

Note that it is preferable to apply a resin coating to the inner wall of the snow blower main body 1 to prevent snow from adhering to the inner wall during snow removal work.

Next, how to use the snow blower will be explained.

As shown in FIGS. 1 and 2, when the variable angle ring 2 on the side of the main body is fixed by the locking rod 14, the method of use is the same as that of a normal snow blower.

Normally, the locking and releasing mechanism is in the state shown in FIG. 4, and by pressing the operation plate 12 with your hands and feet, you can change the angle of the handle 5. When you remove your hands and feet, the handle 5 is moved by the force of the spring 13. Fixed.

That is, when the lever 12c of the operation plate 12 is pushed down against the elastic force of the spring 13 to the position shown by the two-dot chain line in FIG.
The locking rod 14 whose base end is loosely fitted into the locking rod 14 moves back in the direction of the arrow, and its tip end is inserted into the locking hole 2 of the variable angle ring 2.
a, and the ring 2 is in a state where it can rotate.

At this time, since the positioning teeth 2b of the ring 2 are engaged with the lock spring 4, the handle 5 will not rotate unless a certain force is applied from the outside. Also,
Since the trough portion 2c of the positioning tooth 2b is provided on the diagonal line of the locking hole 2a with which the locking rod 14 engages, the locking spring 4 engages with the locking hole 2a due to the sound and catching of the locking spring 4 in the trough portion 2c. There is no need to check the mutual position with the stop rod 14.

Thus, when the handle 5 is rotated to a desired angle and the operating plate 12 is released, it returns to its original state due to the elastic force of the spring 13, and the locking rod 1
4 and the locking hole 2a are engaged, and the handle 5 is locked.
Fixed. Note that since the tip of the locking rod 14 is tapered, it can be smoothly engaged with the locking hole 2a even if there is some misalignment.

On the other hand, by loosening the cap 10, the handle 5 can freely move the operating pipe 7 in and out of the support pipe 6, so it can be adjusted to a length that is easy to use, depending on the height of the user.

[Effects of the invention] As explained above, according to the invention, the angle and length of the handle of the snow blower can be changed.
It is flexible according to work conditions such as shoveling snow, carrying snow, and dumping snow, as well as factors such as the height of the person using it, so it prevents fatigue caused by unreasonable postures during snow removal work and makes the work easier. Efficiency can be improved.

In addition, the angle and length of the handle can be changed to reduce storage space.
It is also convenient to carry.

In particular, when you press down with your foot, the locking rod of the operating plate moves back and leaves the locking hole of the variable angle ring, allowing you to change the angle of the handle. At that time, the positioning tooth of the variable angle ring engages with the locking spring. Since they mesh and move one step at a time, and the center axes of the locking hole and the locking hole are always aligned, there is no need to visually check each time. Then, when you remove your foot from the control panel,
It is raised by a spring and automatically becomes locked. Therefore, the handle can be selectively fixed at one of a plurality of angular positions, and the rotation angle of the handle can be easily adjusted, providing excellent operability.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the snow blower of the present invention, Fig. 2 is an enlarged explanatory view of the variable angle ring 2 of the same snow blower, and Fig. 3 is an explanatory view of the telescoping portion of the telescoping handle. The enlarged explanatory view and FIG. 4 are similarly enlarged explanatory views of the fixing and releasing mechanism portions. FIG. 5 and FIG. 6 are explanatory diagrams of conventional examples, respectively. 1... Main body of the snow blower, 1a... Bottom plate, 1b...
Back plate, 1c...Side plate, 2...Variable ring, 2a...
... Locking hole, 2b ... Positioning tooth, 4 ... Lock spring, 5 ... Telescopic handle, 11 ... Fixing and release mechanism, 12 ... Operation plate, 12b ... Guide groove,
13... Spring, 14... Locking rod, 18...
horizontal guide.

Claims (1)

[Scope of claim for utility model registration] A snow blower body consisting of a bottom plate, a back plate, and a side plate;
A variable ring rotatably attached to the rear part of the side plate and variable to a plurality of angular positions, a telescoping handle connected to the variable ring, and a plurality of variable rings attached to the outer surface of the back plate. a fixing and releasing mechanism that is fixed at one of the angular positions to restrict the rotation of the handle, and that releases the fixation to enable the variable ring to be varied; A plurality of locking holes drilled at a predetermined angle from the center of rotation, and a plurality of positioning teeth whose troughs are located diagonally to each locking hole on the outer peripheral edge on the opposite side of the locking holes. and the positioning tooth meshes with a locking spring fixed to the side plate, and the locking and releasing mechanism includes a pair of left and right locking teeth that are always urged upward by a spring along the back plate and are arranged in a substantially figure-eight shape. an operating plate that is movable up and down and has a guide groove, and a pair of left and right locking rods whose one end is loosely fitted into the guide groove and whose middle part is supported by a horizontal guide of a side plate, and the operating plate is in a raised position. When the tip of the locking rod passes through the locking hole, rotation of the variable ring is prevented, and when the operation plate is in the lowered position, the locking rod moves back and leaves the locking hole, allowing the variable ring to rotate. A snow blower with a variable handle.