Shovel auxiliary tool and fixing unit

Abstract

To reduce the load of work by a shovel.SOLUTION: An attachment part that is detachably attached to a grip handle part of a shovel, an auxiliary grip handle part that extends from the attachment part, and an auxiliary grip part that is provided at a distal end of the auxiliary grip handle part, the auxiliary grip handle part has an angle formed with the grip handle part of the shovel less than 90 degrees. The auxiliary grip handle part is provided so as to be rotatable within a range where an angle formed with the grip handle part of the shovel is less than 90 degrees.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a scoop aid and a fixing unit. [Background technology]

[0002] In conventional snow removal work using a shovel, the worker must bend forward to scoop up the heavy snow and move it to another location. Snow removal work is hard work, and as a technology to reduce such workload, Patent Document 1 discloses a shovel with an auxiliary handle on the top surface of the shaft. This allows the worker to work without leaning forward. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-47618 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, there is a demand for a method for more easily reducing the workload involved in snow removal work by adding a simple modification to a normal shovel, rather than using a shovel such as that disclosed in Patent Document 1.

[0005] The present invention has been made in consideration of such problems, and has an object to provide a scoop auxiliary tool for reducing the load of work using a shovel. [Means for solving the problem]

[0006] The present invention is a shovel auxiliary device comprising an attachment part that is removably attached to a grip handle part of a shovel, an auxiliary grip handle part extending from the attachment part, and an auxiliary grip part provided at the tip of the auxiliary grip handle part, wherein the auxiliary grip handle part is arranged so that an angle between the auxiliary grip handle part of the shovel and the grip handle part of the shovel is less than 90 degrees.

[0007] Another form of the present invention is a shovel auxiliary device comprising an attachment portion that is removably attached to a grip handle portion of a shovel, an auxiliary grip handle portion extending from the attachment portion, and an auxiliary grip portion provided at the tip of the auxiliary grip handle portion, the auxiliary grip handle portion being rotatably provided between the grip handle portion of the shovel.

[0008] Another form of the present invention is a fixing unit for fixing a shovel auxiliary tool, the fixing unit having an attachment part that is detachably attached to the grip handle part of a shovel, an auxiliary grip handle part extending from the attachment part, and an auxiliary grip part provided at the tip of the auxiliary grip handle part, and the distance between the edge of the scooping part of the shovel on the grip handle side and the attachment part is fixed to a predetermined length. Effect of the Invention

[0009] According to the present invention, the load of work using a shovel can be reduced. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram showing a shovel to which a shovel auxiliary tool according to a first embodiment is attached. [Diagram 2] FIG. 13 is a diagram showing a shovel without a shovel aid attached and a worker. [Diagram 3] FIG. 4 is an enlarged view of the attachment portion of the scoop auxiliary tool. [Figure 4] FIG. 11 is a diagram showing a scoop auxiliary tool according to a second embodiment. [Diagram 5] FIG. [Figure 6] FIG. 11 is an explanatory diagram of an example of use of the scoop auxiliary tool according to the second embodiment. [Figure 7] FIG. 11 is a perspective view of a scoop auxiliary tool according to a fourth embodiment. [Figure 8] FIG. 13 is a diagram showing a scoop auxiliary tool according to a fifth embodiment. [Figure 9] FIG. 13 is a diagram showing a scoop auxiliary tool according to a sixth embodiment. [Figure 10] FIG. 13 is a diagram showing a fixing unit according to a seventh embodiment. [Figure 11] 6A and 6B are diagrams showing a configuration of a mounting portion according to a first modified example. [Figure 12] FIG. 13 is a diagram showing a scoop auxiliary tool according to a second modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] (First embodiment) FIG. 1 is a perspective view of a shovel 1 with a shovel auxiliary tool 2 according to the first embodiment attached. The shovel auxiliary tool 2 is a tool for reducing the workload of a worker in snow removal or other work using the shovel 1. The shovel auxiliary tool 2 can be attached to shovels 1 of various shapes and sizes. FIG. 2 is a perspective view of the shovel 1 without the shovel auxiliary tool 2 attached. FIGS. 1 and 2 show a state in which a worker A is scooping snow with the shovel 1. The shovel 1 has a scooping portion 11, a grip handle portion 12, and a grip portion 13. The shovel auxiliary tool 2 is attached to a part of the grip handle portion 12. The shovel auxiliary tool 2 is a tool that can be detachably attached to the shovel 1. The shovel auxiliary tool 2 has an attachment portion 21, an auxiliary grip handle portion 22, and an auxiliary grip portion 23.

[0012] As shown in FIG. 1, the longitudinal direction of the scoop 1 is the X direction. The lateral direction (direction perpendicular to the longitudinal direction) of the surface of the scooping portion 11 is the Y direction. The direction perpendicular to the X and Y directions is the Z direction. The scoop auxiliary tool 2 is attached to the scoop 1 so that the auxiliary grip portion 23 is located on the Z direction side of the grip portion 13. That is, as shown in FIG. 1, when the surface of the scooping portion 11 is facing vertically upward, the auxiliary grip portion 23 is attached to the scoop 1 so that it is located vertically above the grip portion 13. The auxiliary grip handle portion 22 is connected so that the angle between the grip handle portion 12 of the scoop 1 and the auxiliary grip handle portion 22 is less than 90 degrees.

[0013] When worker A scoops up snow with shovel 1 to which shovel auxiliary tool 2 is attached, he / she grasps auxiliary grip 23 with his / her dominant hand and grip 13 with his / her opposite hand, as shown in Fig. 1. In this state, auxiliary grip 23 is located above grip 13, so worker A can work without bending his / her back, as compared to working with shovel 1 to which shovel auxiliary tool 2 is not attached, as shown in Fig. 2. In other words, the workload during snow removal can be reduced.

[0014] 3 is an enlarged view of the attachment part 21 of the scoop auxiliary tool 2. The attachment part 21 is a member for attaching the scoop auxiliary tool 2 to the grip handle part 12. The attachment part 21 is composed of an upper unit 211 and a lower unit 212. The upper unit 211 is provided with a connection part 213 with the auxiliary grip handle part 22. The upper unit 211 is disposed on the upper side (Z direction side) of the grip handle part 12, and the lower unit 212 is disposed on the lower side (opposite side in the Z direction) of the grip handle part 12. The upper unit 211 and the lower unit 212 are attached and fixed with screws 214a to 214d. This makes it possible to prevent the attachment part 21 from moving in the longitudinal direction of the grip handle part 12 (X direction or the opposite direction).

[0015] In addition, packings for tightly bonding the two may be inserted between the grip handle 12 and the upper unit 211, and between the grip handle 12 and the lower unit 212. This makes the connection to the grip handle 12 stronger.

[0016] Furthermore, a plurality of mounting parts that can be connected to grip handle parts 12 of different diameters may be prepared as the mounting part 21. In this way, by using the mounting part 21 that matches the diameter of the grip handle part, the scoop auxiliary tool 2 can be attached regardless of the diameter of the shovel 1.

[0017] As described above, the shovel auxiliary tool 2 of this embodiment can be attached to a normal shovel, and by using the shovel auxiliary tool 2, the load of work using a shovel can be reduced.

[0018] Second embodiment 4 is a view of the scoop auxiliary tool 2 according to the second embodiment as viewed from the Y direction. In the scoop auxiliary tool 2 according to the second embodiment, the auxiliary grip handle part 22 is provided so as to be rotatable about the attachment part 21 within a plane perpendicular to the scooping surface of the scooping part 11 and including the grip handle part 12, i.e., the XZ plane.

[0019] FIG. 5 is a perspective view of the scoop auxiliary tool 2 according to the second embodiment and an enlarged view of the mounting part 21. In this embodiment, two bearing parts 221 and 222 are provided along the Y direction at the end of the auxiliary grip handle part 22 opposite to the auxiliary grip part 23. Also, one bearing part 216 is provided at the mounting part 21. The shaft part 223 is fitted into these bearing parts 221, 222, and 216, so that it is rotatably fixed. As a result, the auxiliary grip handle part 22 and the mounting part 21 are connected, and the auxiliary grip handle part 22 can be rotated around the shaft part 223. Note that the mechanism for making the scoop auxiliary tool 2 rotatable is not limited to the embodiment, and various techniques can be adopted.

[0020] 6 is an explanatory diagram of an example of use of the shovel auxiliary tool 2 according to the second embodiment. For example, assume that snow B to be removed is piled up in front of the worker. In this case, the auxiliary grip part 23 of the shovel auxiliary tool 2 is pressed against the wall of snow B, the grip part 13 of the shovel 1 is pulled back once, and then the scooping part 11 is thrust into the snow B. In this type of work, the auxiliary grip part 23 serves as a fulcrum and can support the shovel 1, so that the scooping work with the shovel 1 can be performed efficiently.

[0021] (Third embodiment) The scoop auxiliary tool 2 of the third embodiment is rotatable in the XZ plane around the mounting part 21, like the scoop auxiliary tool 2 of the second embodiment. However, the scoop auxiliary tool 2 of this embodiment is provided so as to be fixed at a plurality of positions. The scoop auxiliary tool 2 of this embodiment is provided so as to be fixed at a plurality of angles, such as angles of 15°, 30°, 45°, and 60° with respect to the grip handle part 12. The mechanism for rotating the scoop auxiliary tool 2 is the same as that described with reference to FIG. 5 in the second embodiment. Furthermore, the scoop auxiliary tool 2 of the third embodiment is provided with a locking mechanism (not shown) for fixing the scoop auxiliary tool 2 at a position corresponding to a plurality of angles. This allows the position of the auxiliary grip part 23 to be adjusted to an appropriate angle according to the height of the worker and the work content. In this case, the position at which the auxiliary grip part 23 is fixed is a position corresponding to an angle of less than 90° with respect to the grip handle part 12.

[0022] (Fourth embodiment) FIG. 7 is a perspective view of a shovel auxiliary tool 2 according to a fourth embodiment. The shovel auxiliary tool 2 shown in FIG. 7 is provided so as to be rotatable not only in the XZ plane but also in the Y direction. In this case, the mounting part 21 is realized by a universal joint (swivel joint) 2101 such as a ball joint. By making it rotatable in the Y direction in this way, for example, when shoveling snow, when snow placed on the scooping part 11 is to be dumped sideways (Y direction), the grip part 13 of the shovel 1 can be twisted sideways (in the YZ plane) while the position of the auxiliary grip part 23 is fixed. Therefore, the worker does not need to make unnecessary movements, and the efficiency of the work can be improved.

[0023] Fifth embodiment 8 is a perspective view of the scoop auxiliary tool 2 according to the fifth embodiment. In the scoop auxiliary tool 2 according to the fifth embodiment, the auxiliary grip handle 22 can be extended and retracted in the longitudinal direction. This allows the length of the auxiliary grip handle 22 to be adjusted to an appropriate length according to the height, arm length, and type of work of the worker.

[0024] 8 shows an outline of the mechanism by which the auxiliary grip handle 22 extends and retracts. In this embodiment, the auxiliary grip handle 22 has a third auxiliary grip handle 225 on the auxiliary grip 23 side and a fourth auxiliary grip handle 226 on the scooping part 11 side.

[0025] The third auxiliary grip handle 225 is provided with three bearings 2251, 2252, 2253 along the longitudinal direction (X direction). The fourth auxiliary grip handle 226 is provided with one bearing 2261. The bearing 2261 of the fourth auxiliary grip handle 226 is mated with any one of the three bearings 2251, 2252, 2253 of the third auxiliary grip handle 225, and the shaft 227 is fitted in, so that the shaft 227 is fixed and the length in the longitudinal direction can be varied. The mechanism for varying the length of the scoop auxiliary tool 2 is not limited to the embodiment, and various techniques can be adopted.

[0026] Sixth embodiment FIG. 9 is a perspective view of the scoop auxiliary tool 2 according to the sixth embodiment. In the scoop auxiliary tool 2 according to the sixth embodiment, the length H of the attachment part 24 in the longitudinal direction is longer than the length of the attachment part 21 of the scoop auxiliary tool 2 according to the first to fifth embodiments. Furthermore, the attachment part 24 has a contact surface 25 that contacts the edge part 111 at the end part on the scooping part 11 side. Here, the edge part 111 is the edge part on the grip handle part 12 side of the scooping part 11. The length H of the attachment part 24 in the longitudinal direction is adjusted so that the distance from the edge part 111 to the end of the auxiliary grip handle part 22 makes it easy to scoop snow or the like. Therefore, when attaching the scoop auxiliary tool 2 to the shovel 1, the worker or the like does not need to consider at what position on the grip handle part 12 the attachment part 24 should be attached. That is, the auxiliary grip handle part 22 can be attached at an appropriate position by abutting the contact surface 25 against the edge part 111.

[0027] Seventh embodiment 10 is a perspective view of a fixing unit 3 according to the seventh embodiment. The fixing unit 3 according to the seventh embodiment is a tool for positioning the attachment position of the scoop auxiliary tool 2 according to the first to fifth embodiments on the grip handle part 12 so that it is at an appropriate position. The fixing unit 3 has a long shaft part 31 provided with a length for positioning, a recess 32, and a contact surface 33. The recess 32 fits into the attachment part 21 provided on the end of the long shaft part 31 on the auxiliary grip part 23 side. The contact surface 33 abuts against the edge part 111 of the scooping part 11.

[0028] 10, with the scoop auxiliary tool 2 temporarily attached to the grip handle 12, the recess 32 is fitted into the attachment part 21, and further the contact surface 33 is brought into contact with the edge part 111. In this state, the scoop auxiliary tool 2 is fixed to the grip handle 12. The fixing unit 3 is composed of an upper unit 341 and a lower unit 342, which are connected with screws to fix the fixing unit 3 to the attachment part 21 and the grip handle 12.

[0029] Furthermore, a plurality of fixing units 3 having different lengths of the long shaft portion 31 may be provided. This allows the attachment position of the scoop auxiliary tool 2 to be adjusted by attaching a fixing unit 3 of an appropriate length according to the worker's height, arm length, shovel length, etc.

[0030] It should be noted that the present invention is not limited to the specific embodiment, and various modifications and variations are possible within the scope of the gist of the present invention described in the claims, for example, by applying a modified example of one embodiment to another embodiment.

[0031] In the first modified example, the mechanism of the mounting part 21 is not limited to the embodiment. For example, as shown in FIG. 11, the mounting part 21 may have a mechanism 400 at both ends thereof, in which the connecting shaft 402 is engaged with the recess 401 and the lever 403 tightens the tightening force. In this case, the lever 403 may be pulled in the direction S toward the recess 401 shown in FIG. 11(a), and then, as shown in FIG. 11(b), the connecting shaft 402 may be fitted into the recess 401, and then the lever 403 may be pulled in the direction T opposite to the direction S, to be attached to the mounting part 21. This makes it possible to eliminate the need for screws. Therefore, the scoop auxiliary tool 2 can be easily attached to the scoop 1 without tools such as a screwdriver.

[0032] As a second modified example, the mechanisms of the scoop auxiliary tool 2 of each of the above-mentioned embodiments may be appropriately combined. For example, as shown in Fig. 12, the scoop auxiliary tool 2 may be rotatable in three dimensions and variable in length. Furthermore, the scoop auxiliary tool 2 shown in Fig. 12 may be fixed to the edge 111 of the scooping part 11 of the shovel 1 at the contact surface 25, and further fixed to the grip handle part 12 by a mechanism 400. [Explanation of symbols]

[0033] 1 Scoop 2. Scooping aid 3 Fixed Unit 11 Scooping section 12 Grip Handle 13 Grip 21, 24 Mounting part 22 Auxiliary grip handle 23 Auxiliary grip 25, 33 contact surface 31 Long shaft part 32 Recess

Claims

1. An attachment part that is detachably attached to a grip part of a scoop; an auxiliary grip portion extending from the mounting portion; An auxiliary grip portion provided at a tip of the auxiliary grip handle portion; Equipped with The auxiliary grip handle is arranged to form an angle of less than 90 degrees with the grip handle of the shovel.

2. An attachment part that is detachably attached to a grip part of a scoop; an auxiliary grip portion extending from the mounting portion; An auxiliary grip portion provided at a tip of the auxiliary grip handle portion; Equipped with The auxiliary grip handle is rotatably provided between the grip handle of the shovel and the auxiliary grip handle.

3. The scoop auxiliary tool according to claim 2 , wherein the auxiliary grip handle is further provided rotatably in a direction perpendicular to a plane including the grip handle of the scoop and the auxiliary grip handle.

4. The scoop auxiliary tool according to claim 1 or 2, wherein the auxiliary grip handle portion has a length adjustable in a longitudinal direction.

5. The scoop aid according to claim 1 or 2, wherein a contact surface is provided at a longitudinal end of the attachment portion, the contact surface contacting an edge of the scooping portion of the scoop that is on the grip handle side.

6. A fixing unit for fixing a scoop auxiliary tool, the fixing unit comprising: an attachment part that is detachably attached to a grip handle part of a scoop; an auxiliary grip part extending from the attachment part; and an auxiliary grip part provided at a tip of the auxiliary grip handle part, A fixing unit that fixes the distance between the edge of the scooping portion of the shovel on the grip handle side and the mounting portion at a predetermined length.

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