JPH0694108B2 - Grip of equipment and method of fixing the grip - Google Patents

Description

TECHNICAL FIELD The present invention relates to a grip of equipment and a method of fixing the grip, and the equipment is represented by a hammer as a manual tool, a golf club as a sports equipment, and the like. The present invention relates to a grip that is attached to a rear grip portion of a handle and has appropriate elasticity, and a method of fixing the grip to the handle handle portion.

(Prior Art) Although there are many kinds of tools such as hammers and golf clubs that have grips attached to the grip handle part, especially when grips made of rubber-like elastic material are attached to the grip part of the handle. , A fixing means formed by applying an adhesive between the handle and the grip, or a fixing means in which a double-sided adhesive sheet in which a volatile agent such as alcohol is sprayed for the purpose of lubrication is interposed between the handle and the grip. It was a typical fixing means.

(Problems to be Solved by the Invention) The fixing means using an adhesive or an adhesive sheet to the grip handle portion of the grip sufficiently maintains the stable fixed state in the initial stage of the equipment, but with time. The gripping force gradually weakens due to the axial sliding force of the handle acting on the grip or the twisting force of the handle in the circumferential direction, and the grip is axially or circumferentially centered around the grip of the handle. However, there is a difference in movement, which results in hindering the use of stable equipment.

Also, the mounting work centered on inserting the grip into the grip handle part by inserting the adhesive evenly over the long hole for the handle insertion hole drilled in the axial direction of the grip is a manual work. Since it is the center, it requires considerable skill and there was a problem in terms of work efficiency.

The present invention provides a grip that can maintain the fixing force of the grip to the grip handle for a long period of time, which can sufficiently cope with the load applied to the grip portion from each direction, and stably achieve the original purpose of the grip. In addition, by automating the method of fixing the grip to the grip handle, which was conventionally centered on manual work, it improves the work efficiency and can mass-produce a homogeneous product that is not greatly affected by the skill of the work. An object of the present invention is to provide a method for fixing the same.

(Means for Solving the Problems) In order to achieve the above object, in the grip of the tool according to the present invention, a cylindrical core made of a hard synthetic resin is fixed to the grip grip equal parts of the handle. . This tubular core has a group of concave portions or convex portions scattered over the entire surface. Then, the core is covered with a grip made of hard synthetic resin and having rubber-like elasticity, and the grip and the core are engaged with each other at the concave portion or the convex portion of the core, and the engaging portion is formed at the portion. There is. The grip part of the handle and the core are flattened with equal parts of the handle grip part of the handle, or by forming a plurality of protrusions or recesses on the surface of the handle part of the handle, a part of the core is The core is locked by the concave and convex portion, and the core is fixed to the handle without turning.

A collar body made of a hard synthetic resin is attached to the rear end of the grip portion of the handle, and a recess provided in a part of the collar body is filled with a part of the grip material that also covers the collar body. , The movement of the grip is multi-faceted.

In addition, the end surface of the collar body embedded in the grip is partially exposed by the grip end portion, and the end portion of the grip is reinforced,
Together with the accent, the grip can be used as a second simple striker.

Next, regarding the method of fixing the grips of the tools, the grip grip part equal part is supported in the core mold and the hard synthetic resin is pressed into the grip part of the handle and the annular space in the mold. Then, in the convex portion or concave portion group provided on the inner surface of the mold, the pre-stage step of fixing the cylindrical core having the concave portion or convex portion group formed over the entire surface to the grip portion of the handle, and then the handle portion with the cylindrical core Is supported in a split mold for grip molding, a hard synthetic resin is press-fitted into an annular gap between the core and the mold, and a locking portion is formed between the core and the grip in the uneven portion group of the core. However, it is characterized by a post-stage step of molding the grip.

Then, in the former step, folding of the closed mold of the core molding die, crushing the grip part of the pipe-shaped metal handle and the equal parts,
Characterized by flattening the portion, or by forming a plurality of protrusions or recesses in advance on the peripheral surface of the grip grip equal portion of the handle, all of which are directed to fixing the tubular core to the handle. It is a thing.

(Example) Next, regarding the grip of the tool according to the present invention, a specific example thereof will be described with reference to the drawings, taking a hammer as an example of the tool. 1 is a partially cutaway front view of a hammer embodying the present invention, and FIG. 2 is an enlarged cut end view taken along the line AA of FIG.

A beating portion (2) is fixed to the tip portion of the handle (1), and a plurality of recesses (4) made of hard synthetic resin, for example, polypropylene resin, are provided on the peripheral surface of the handle rear end grip portion (3). ) Or a cylindrical core (5) having a plurality of convex portions scatteredly formed,
Further, at the rear end of the grip portion (3), a collar body (7) also made of a hard synthetic resin is fitted with its small diameter portion (8 ') at the end portion of the handle (1) so that the large diameter portion ( 8) is attached so as to be in contact with the end of the handle, and a notch-like recess (6) is formed on the periphery of the large diameter portion (8) of the collar body (7). .

The rigid synthetic resin cylindrical core (5) is fixed to the handle (3) of the handle by, for example, flattening the equal part of the handle (3) of the handle with an oval cross section (second (See the figure), or a plurality of convex pieces (9) on the handle surface of the handle with a circular cross section.
(9) is projected, or a plurality of recessed portions are cut out, and the projection piece (9) or a part of the tubular core (5) covering the portion with the recessed portions is used. Form a blocking state (3rd
(See FIG. 4).

A tubular core (5) is fixed to the periphery and a collar body (7) is attached to the end portion
The grip (3) of the handle on which the handle is attached is made of a hard synthetic resin, for example, a rubber-like elastic body such as vinyl chloride resin, and a grip (11) provided with anti-slip means such as a circumferential groove and a convex group on its surface. It is covered with. A part of this grip member is filled in a group of recesses (4) provided in the core (5), and also in a notched recess (6) of the collar body (7), or in the grip member. Then, by embedding the convex portion of the cylindrical core (5), a locking portion that suppresses movement and rotation is formed between the grip (11) and the core (5) by these locking means. .

In addition, when the grip (11) is covered, the entire collar body (7) is embedded in the grip (11), and the presence of the locking portion between the recess (6) of the collar body (7) and the grip (11). At the grip (11)
Twist movement of the rear end is suppressed (see Fig. 1).

Further, a part of the grip (11) member is filled in the notched cross-shaped recess (6 ') provided on the end surface of the large diameter portion (8) of the collar body (7), and further the collar body is formed. A part of (7) is completely exposed from the rear end of the grip (11), and the hard collar body (7) is used to prevent wear of the rear end of the grip (11), or the grip for hammers. In the meantime, it is possible to perform a light hitting work at the rear end portion of the grip and expand the field of use of the hammer.

It should be noted that the handle of the tool can be appropriately selected from the pipe-shaped metal handle, the wooden handle, the reinforced plastic mixed with glass fiber, and the like to carry out the present invention.

Next, specific examples of a method for fixing a grip of a tool will be described with reference to the drawings.

Rear grip (3) of the pipe-shaped metal handle (1) of the hammer
Open a corresponding part of the core molding split molds (21) (21) and support it between them. Inside the split mold (21) (21),
Projecting pieces (22) for forming a group of recesses (4) provided on the cylindrical core (5) are provided in a protruding manner. When the pair of split molds is closed, the grip portion (3) of the pipe is centered and flattened by utilizing the compressive force, and an elliptical cross-section portion is previously formed in the grip portion (3). An annular gap (23) formed between the split mold (21) and the handle grip (3) formed by completely closing the split mold.
A liquid hard synthetic resin, for example, polypropylene resin is press-fitted into and molded, and a concave portion (relatively formed around the grip portion (3) of the handle by the projecting piece (22) of the mold ( 4) The tubular core (5) provided with the group is fixed (sixth)
(Fig. 7, Fig. 7).

Alternatively, a configuration may be adopted in which a concave portion is formed on the inner wall surface of the split mold for core molding, and thereby a group of protrusion pieces is relatively formed on the surface of the cylindrical core (5).

The rear end of the grip portion (3) of the handle (1) of the hammer with core removed from the split molds (21) (21) for core molding is made of a hard synthetic resin, that is, the same quality as the core member. It is closed and fitted by fitting the small diameter part (8) of the collar body (7), and the notch-like recess (6) is formed at the end of the grip part (3) of the handle and the periphery of the large diameter part (8 '). Large diameter part (8 ') of the collar body (7)
Are engaged with the grip (3) and are located. This completes the first step. Then, the gripping portion of the handle (1) to which the tubular core (5) and the collar body (7) are attached is supported by opening the split molds (25) (25) for grip molding.

A liquid soft synthetic resin, such as vinyl chloride resin, is press-fitted into the annular space (26) between the closed split molds (25) (25) and the core (5) and is molded to form a recess in the core (5). (4) Using the group or the convex portion group, while forming a locking state with the notch-like recess (6) of the collar body (7) over the entire surface of the core, the handle grip (3) ) Is covered with a grip (11) made of a rubber-like elastic body.

The core (5) fixed to the grip portion (3) of the handle is not covered by the grip (11) as shown in FIG. 1, but one example is shown in FIG. Grips (11)
Expose a part of the core (5) from the end of the core (5)
By giving a colorimetric change between the grip (11) and the grip (11), an accent effect can be further suppressed, and the turning-up phenomenon that tends to occur at the end of the grip (11) can be suppressed.

As the handle of the tools, a pipe-shaped metal handle, a wooden handle, or a reinforced plastic handle made by mixing glass fibers can be widely used.

(Effects of the Invention) The grip according to the present invention holds the grip in the handle while maintaining the interlocking state of the grip and the core scattered throughout the tubular core that is fixed in advance to the handle of the handle. By covering and fixing to the part, it is possible to reliably prevent the grip handle from moving in the axial direction and the circumferential direction for a long period of time.
It is directly connected to safe use.

Further, the grip fixing method according to the present invention adopts a casting method using a split mold in both the cylindrical core and the subsequent grip forming step, so that the molding fixing work is quick and easy. Compared with the conventional fixing work centering on inserting the grip part of the handle into the longitudinal hole of the grip, its workability is excellent in terms of mass production, homogeneity, and simplicity. Be effective.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a hammer according to the present invention,
2 is an enlarged cut end view taken along the line AA in FIG. 1, FIG. 3 is a view corresponding to FIG. 1 showing another embodiment, and FIG. 4 is an enlarged view taken along the line BB in FIG. A cut end view, FIG. 5 is an end view of a grip with a part of the collar body exposed, FIG. 6 is a central longitudinal cross-sectional view when a tubular core is molded, and FIG. 7 is CC of FIG.
8 is an enlarged cut end view taken along the line, FIG. 8 is a central longitudinal sectional view at the time of grip forming, and FIG. 9 is an enlarged cut end view taken along the line D-D in FIG. 1 ...... Handle 3 ...... Grip part 4 ...... Recessed part 5 ...... Cylindrical core 6,6 '...... Notched recessed part 7 ...... Collar body 9 ...... Convex piece 11 ...... Grip 21, 21 ...... Core Split mold for molding 22 …… Projection piece 23 …… Annular void 25 …… Grip molding split mold 26 …… Annular void

Claims (8)

[Claims] 1. A rigid synthetic resin cylindrical core having recesses or projections formed over the entire surface is fixedly attached to the grip grip equal parts, and a hard synthetic resin grip is embedded by embedding the core.
A grip for a tool, which comprises a group of recesses or projections of the core to form an engaging portion at the portion and to cover the grip portion of the handle. 2. The grip of the handle has a flat shape.
Grip for the listed equipment. 3. A handle grip portion having a plurality of protrusions or recesses formed therein, and a rigid synthetic resin cylindrical core having engagement portions formed by engagement means with protrusions or recesses of the handle portion. Claim 1
Grip for the listed equipment. 4. A grip body is attached to an end portion of the grip portion of the handle, and a notch-like recess provided at an end portion of the grip body embedded in a hard synthetic resin grip part of the grip portion. 2. The grip of the device according to claim 1, wherein the grip is filled with and forms a locking portion at the portion. 5. A collar body mounted on an end portion of a grip portion of a handle embedded in the grip, wherein a part of the grip is filled in a notch-like recess formed on an end surface of the collar body, and The grip according to claim 4, wherein a part of the end surface is exposed at the grip end surface. 6. The grip grip equal parts of the handle are supported in a split mold for molding a tubular core, and a recess or a protrusion is formed over the entire surface by means of press-fitting a hard synthetic resin into the split mold. The former step of molding and fixing the tubular core provided with the group to the grip, the grip of the handle with the core is also supported in the grip molding split mold, and the hard synthetic resin is press-fitted into the mold. And a grip fixing method for a tool, which is formed through a post-stage step of molding a grip having a locking portion formed by using a concave portion or a convex portion of a tubular core. 7. A flat part is formed in the grip part equal part of a pipe-shaped metal handle by crushing pressure of the grip part equal part by utilizing a closing process of a split mold for forming a tubular core. The method for fixing a grip of a tool according to claim 6, wherein: 8. The tool according to claim 6, wherein a plurality of convex portions or concave portions are preliminarily formed on the surface of the grip portion equal part of the handle supported in the split mold for molding the tubular core. Grip fixing method.