JP2004081135A - Grip part structure for agricultural tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grip part structure for agricultural tools enabling movement of delicate blade when used by making secateurs lightweight and forming an arm in a readily gripping shape. <P>SOLUTION: The grip part structure is equipped with an arm body 3 made of a metal in which a notch part is formed in the longitudinal direction and a plurality of mounting small holes are arranged on bottom wall surface of the notch part, an inner layer material 2 made of a resin having a plurality of insertable small projections in which taking-out prevention is carried out in a state insertable into mounting small holes and an outer layer member 1 for slip prevention integrated with the inner layer material 2 made of the resin. The insertable small projections are inserted into the mounting small holes. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a grip portion structure for an agricultural tool.
[0002]
[Prior art]
For conventional agricultural tools, for example, in pruning scissors, the grip part has a structure in which the periphery of the arm body is covered with a rubber member for non-slip, or one that does not use a rubber member in the arm body at all. It was a target.
[0003]
[Problems to be solved by the invention]
However, the structure of the conventional grip portion (of the pruning scissors) becomes unnecessarily thick when covered with rubber, so it is difficult to say that the grip portion has a shape that is easy to grip, and that no rubber member is used. Was easy to slip when gripped, and both had inconvenient points for delicate cutting.
[0004]
Therefore, an object of the present invention is to provide a gripping structure for an agricultural tool that reduces the weight of the pruning scissors, makes the arm easy to grip, and allows the delicate blade to move during use.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a grip portion structure for an agricultural tool according to the present invention has a notch formed along a longitudinal direction, and a plurality of mounting small holes formed so as to open on a bottom wall surface of the notch. A metal arm body, a resin inner layer member having a plurality of insertion small projections which are inserted into the mounting holes and are prevented from falling off, and are formed along the bottom wall surface; And a non-slip outer layer member integrated with the inner layer member.
[0006]
Further, the bottom wall surface has a protruding portion along its longitudinal direction, and the resin inner layer member is configured to have a fitting recess externally fitted to the protruding portion.
Also, a notch is omitted on the base end side and the tip end side of the arm body to form a stepped hook portion, and the base end portion and the tip portion of the cover member fitted to the hook portion are brought into contact with each other, Even if the cover member is fitted, the cover member is configured not to shift to the base end side and the distal end side.
Further, the arm body is made of aluminum die-cast.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings showing the embodiments.
[0008]
FIG. 1 shows an embodiment of a grip part structure for an agricultural tool of the present invention, and exemplifies a case of pruning scissors as an agricultural tool. In the present invention, agricultural tools are defined to include horticultural work tools. The pruning scissors include arm bodies 3 and 4 that are grip portions, a first scissor blade 14 and a second scissor blade 15 fixed on a longitudinal extension of each arm body 3 and 4, and the two scissors blades. A pivot shaft 12 for pivotally connecting the base end sides of the blades 14 and 15 to open and close; a spring 9 for urging the two arm bodies 3 and 4 in the opening direction; An opening hook 8 serving as a stopper when the arm bodies 3 and 4 are closed, and first and second projections 10 and 11 for regulating the closed position when the arm bodies 3 and 4 are closed. It has.
[0009]
FIGS. 2 to 5 exemplify a specific configuration of the arm body 3. The arm body 3 forms a cutout 16 along the longitudinal direction as shown in the side view of FIG. 2, and a bottom wall surface of the cutout 16. 22 has a gentle curved shape when viewed from the side. As shown in the cross-sectional view of FIG. 5, the bottom wall surface 22 has a ridge portion 17, and a plurality of small mounting holes 5a to 5c are provided along the longitudinal direction. The positions of the mounting holes 5a to 5c are arranged in a line at a predetermined pitch in the longitudinal direction along the center line of the arm body 3 in the width direction, and the axes of the mounting holes 5a, 5b, 5c. Are arranged parallel to each other. Further, the arm main body 3 has mounting holes 21 and 21 for fixing the first scissor blade 14 with the mounting screw 13 (see FIG. 1) on the base end 3a, and the main body arm 3 is closed on the distal end 3b. It has an opening prevention hook 8 for maintaining the state.
[0010]
In the side view of the arm body 3 in FIG. 2, the notch 16 is omitted in the base end 3a and the distal end 3b to form stepped hooks (stoppers) 23 and 24. When the cover member 19 is externally fitted to the ridge portion 17, the base end portion 19a and the distal end portion 19b come into contact with the hook portions (stopper portions) 23 and 24, and are regulated, and the cover member 19 is moved in the longitudinal direction. The structure does not shift (see FIG. 8).
[0011]
In the cross-sectional view of the arm body 3 in FIG. 5, the ridge 17 has a cross-sectional mountain shape, so that if the cover member 19 is externally fitted as shown in FIG. The structure does not shift in the direction.
[0012]
Further, it is preferable that the arm body 3 is made of aluminum die-cast. If aluminum die casting is used, the small holes 5a, 5b, 5c can be formed simultaneously with die casting, which is convenient and can be made relatively lightweight. In addition to being strong, it has excellent durability.
[0013]
The cover member 19 in which the resin inner layer member 2 and the non-slip outer layer (elastomer) member 1 are integrated in the side view of FIG. 6 and the cross sectional view of FIG. More specifically, the resin inner layer member 2 is injection-molded into an inverted U-shaped cross section having a fitting concave portion 18 fitted into the cutout portion 16 so as to contact the bottom wall surface 22 of the arm body 3. It is a thin hard synthetic resin, has a gently curved shape in the longitudinal direction, and has a plurality of small insertion protrusions 7a to 7c in the fitting concave portion 18. Further, the outer diameter of the small insertion protrusion 7 is set to be larger (0.4 to 1.2 mm) than the inner diameter of the small mounting hole 5, and the small insertion projection 7 is inserted into the small mounting hole 5 in a press-fit manner. The structure does not come off.
[0014]
The non-slip outer layer member 1 has an inverted U-shape in cross section, is fitted over the outer surface of the inner layer member 2 in a cover shape, and is integrated. That is, the inner layer member 2 is molded first with a hard synthetic resin, and then the inner layer member 2 is placed in a mold, and the elastomer or soft synthetic resin material is integrated by injection molding, compression molding, or the like. Thus, the cover member 19 is formed. In other words, the outer layer member 1 is integrally laminated on the outer surface 20 of the inner layer member 2. Further, as shown in the sectional view of FIG. 7, both ends of the resin inner layer member 2 have outwardly bent flanges 2a and 2b, and both end edges 1a and 1b of the outer layer member 1 are formed by the flanges 2a and 2b. Abut. As shown in the side view of FIG. 6, the flanges 2a and 2b of the resin inner layer member 2 can be seen along the longitudinal direction. Therefore, it is also easy to make the colors (hues) of the inner layer member 2 and the outer layer member 1 different from each other to give aesthetic beauty.
[0015]
In the side view of FIG. 8 and the cross-sectional view of FIG. 9, a state is shown in which the small insertion protrusion 7 of the resin inner layer member 2 is inserted into the small mounting hole 5 of the arm body 3 and assembled. Since the diameter of the plurality of small insertion protrusions 7 of the resin inner layer member 2 is larger than the small attachment hole 5 of the arm body 3, if the small insertion protrusion 7 is pressed into the small attachment hole 5, it does not come off. In addition, since the external force that grips the arm body 3 acts in the direction of pushing the plurality of small insertion protrusions 7 into the small mounting holes 5, the structure has a reasonable structure that does not separate.
[0016]
After inserting the plurality of small insertion protrusions 7 of the resin inner layer member 2 into the small mounting holes 5 of the arm body 3, the distal ends of the small insertion protrusions 7 are subjected to external pressure or heat and pressure. It is good also as a structure which crushes and is more difficult to come off as a bulge.
[0017]
Further, the present invention is not limited to the above-described embodiment. For example, the outer layer member 1 for non-slip and the inner layer member 2 made of resin may be freely attached to both arm bodies 3 and 4. In addition to the pruning shears, the present invention can be freely applied to grips of various agricultural tools (including horticultural work tools).
[0018]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0019]
(According to claim 1 or 2) Since the resin inner layer member 2 and the non-slip outer layer member 1 have a structure integrated with each other, even if the arm body 3 is relatively soft, the anti-slip outer layer member 1 is strong. It becomes possible to attach to. In addition, since a plurality of small insertion protrusions 7a to 7c are inserted into the small mounting holes 5a to 5c of the arm body 3, the mounting work to the arm body 3 can be performed quickly and easily, and the external force gripping in the direction in which the arm main body 3 does not come off. In addition, it has a long life for a long use period. Further, by using the non-slip outer layer member 1 having a low hardness on the outer surface side of the grip portion, it is easy to work into a shape that is easy to grip, and (the anti-slip outer layer member 1 is put over the entire periphery of the arm body 3. Since the grip is not unnecessarily thickened, delicate scissors can be used. Further, when the grip portion is viewed from the side, the inner layer member 2 and the outer layer member 1 can be easily classified into two colors, so that a design change can be easily made and the degree of freedom in design is widened.
According to the second aspect, the cover member 19 is not positioned in the width direction and has a long life.
According to the third aspect, when the cover member 19 is externally fitted, the position can be reliably regulated on the base end side 3a and the distal end side 3b of the arm body 3, so that the life is further extended.
According to the fourth aspect, the arm body 3 is made of aluminum die-cast to facilitate manufacture. For example, the mounting small holes 5 can be formed simultaneously with molding, and the weight can be reduced.
[Brief description of the drawings]
FIG. 1 is a side view of a pruning scissors having a grip portion according to an embodiment of the present invention.
FIG. 2 is a side view of the arm main body before attaching an outer layer member for slip prevention and an inner layer member made of resin.
FIG. 3 is a plan view of the arm main body before attaching an outer layer member for slip prevention and an inner layer member made of resin.
FIG. 4 is a bottom view of the arm main body before attaching a non-slip outer layer member and a resin inner layer member.
FIG. 5 is a sectional view taken along line AA in FIG. 4;
FIG. 6 is a side view of a cover member assembled by integrally molding a non-slip outer layer member and a resin inner layer member.
FIG. 7 is a sectional view taken along line BB of FIG. 6;
FIG. 8 is a side view in which a cover member is fitted to the arm main body.
FIG. 9 is a sectional view taken along the line CC in FIG. 8;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Non-slip outer layer member 2 Resin inner layer member 3 Arm main body 3a Base end 3b Distal end 5 Mounting small hole 7 Insertion small projection 16 Notch 17 Protrusion 18 Fitting recess 19 Cover member 19a Base end 19b Tip 22 Bottom wall 23 Hook 24 Hook

Claims (4)

A metal arm body (3) in which a notch (16) is formed along the longitudinal direction and a plurality of mounting small holes (5) are formed so as to open on the bottom wall surface (22) of the notch (16). ) And a resin inner layer member () having a plurality of small insertion protrusions (7) inserted into the small mounting holes (5) and prevented from falling off and having a shape along the bottom wall surface (22). 2) and an outer layer member (1) for non-slip integrated with the resin inner layer member (2). The bottom wall surface (22) has a ridge (17) along its longitudinal direction, and the resin inner layer member (2) has a fitting recess (18) that fits externally to the ridge (17). The grip part structure for an agricultural tool according to claim 1 having. The notch (16) is omitted from the base end (3a) and the distal end (3b) of the arm body (3) to form stepped hooks (23) and (24). 23) and (24), the base end (19a) of the cover member (19) fitted to the distal end (19b) is brought into contact with the base member (3a) even if the cover member (19) is fitted. The grip portion structure for an agricultural tool according to claim 1 or 2, wherein the grip portion structure is configured so as not to shift toward the tip end (3b). The grip part structure for agricultural tools according to claim 1, 2 or 3, wherein the arm body (3) is made of aluminum die-cast.

Images