JP2938195B2 - Grip and method of manufacturing grip - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grip such as an operation lever for a parking brake of a vehicle and a shift lever for shifting a gear, and a method of manufacturing the grip.

[0002]

2. Description of the Related Art FIG. 5 is an explanatory perspective view showing an example of a grip portion in a conventional parking brake operating lever, and FIG. 6 is an explanatory sectional view taken along the line AA in FIG.

In the example shown in FIG.
Is manufactured in the following steps. (A) First, a thick cylindrical resin grip body 22 is press-fitted and fixed to the outer periphery of a gripping cylinder portion 12 formed by curling the distal end side of the lever body 10 into a cylindrical shape. (B) Next, a skin or cloth-like grip skin member 24 is wrapped around the grip body 22 and its inner surface is fixed to the outer peripheral surface of the grip body 22 with an adhesive. The part is sewn by hand. In addition, the tip (head) edge 24a of the grip skin member 24 is folded along the grip body 22 and the inner wall of the hollow portion of the gripping cylinder 12, and a cylindrical cap member 26 is further fitted inside the grip. The front edge 24a of the skin member 24 is securely fixed.

[0004] Such a grip skin member 24 can improve the tactile sensation of the grip of the grip portion 20 and can improve the grip 20.
Are provided for the purpose of enhancing the sense of quality in the interior of the vehicle by unifying the design with a seat or the like.

[0005]

In the grip having such a structure, it is necessary to sew the grip skin member 24 by hand sewing, so that the sewing operation is complicated and requires a lot of time, and the work efficiency is increased. In addition to poor productivity, low productivity is required, and the sewing operation requires skill.

Further, as shown in FIG. 5, in the sewn processing portion a of the grip skin member 24, there are a large number of irregularities in the seam, and the grip 2 is operated when the parking brake is operated.
There is a problem that the finger or palm holding the 0 hits the uneven portion and gives the driver discomfort or pain.

[0007] The present invention solves the above-mentioned problems, and an object of the present invention is to produce a high-quality grip with high production efficiency and excellent operation quality even for an unskilled person with high productivity. An object of the present invention is to provide a grip and a method of manufacturing the same.

[0008]

Means for Solving the Problems In order to solve the above-mentioned problems, a grip according to the present invention is a grip constituted by covering a surface of a grip body made of resin or rubber with a skin or cloth-like grip skin member. A cylindrical grip core member is provided along the axial direction of the grip, and the grip core member has a molding material injection portion on a side wall portion thereof and has an air vent hole on a base end side. .

Further, the manufacturing method of the present invention is a method for manufacturing a grip constituted by coating a surface of a grip body made of a resin or rubber with a skin or cloth-like grip skin member. (D). (a) A cylindrical gripping core member having a bag material or a cylindrical shaped gripping skin member formed in a predetermined shape, a molding material injection part on a side wall part thereof, and an air vent hole at a base end part. Place. Then, the tip of the grip skin member is fixed to the tip of the grip core member to form an insert member. (b) Set the insert member in the cavity of the grip mold. (c) A predetermined amount of the molten molding material is filled into the cavity of the grip mold via the base end side opening of the grip core member. (d) By inserting a piston member into the opening and pressing the molten molding material, the molten molding material is extruded from the molding material injection portion toward the grip skin member side, while releasing air in the cavity from the air vent hole. A grip body is formed integrally between the grip skin member and the grip core member.

[0010]

According to the present invention, since the grip skin member can be mechanically sewn with a sewing machine or the like in advance, the working efficiency can be greatly improved as compared with the conventional hand sewing.

In addition, an insert member is provided in which the overall shape of the grip is defined by the grip skin member and the grip core member, and the insert member is set inside the cavity of the grip mold, and the molten molding material is filled with the grip core member. By simply pressing and filling the molding material with a piston member and then molding by using a piston member, a finished product of the grip can be obtained, so that the production efficiency can be dramatically improved.

[0012] Further, in these sewing operations and forming steps, special skill is not required unlike the conventional step of winding and attaching the skin member of the grip or sewing, so that even a non-skilled person can easily manufacture the grip. In this respect, productivity can be improved.

Further, as described above, the grip body and the grip skin member can be integrally formed by insert molding, so that the tension of the grip skin member is uniform and no seam unevenness occurs. ,
It has an excellent feel when holding the grip and can also give a visually smart feeling.

Further, in the present invention, since the grip core member having relatively high hardness is provided at the center of the formed grip, the strength and rigidity of the grip can be sufficiently ensured. The press-fitting operation to the lever body can be performed efficiently and reliably. In addition, since the grip strength and rigidity can be ensured by the grip core member, the grip body can be made of a material having appropriate flexibility, and therefore, the texture when gripping the grip is excellent. can do.

Further, in the present invention, the molten molding material is filled from the base end side opening of the grip core member, and this molding material is pressed by using a piston member to form a molding provided on the side wall of the grip core member. It is extruded (injected) between the grip skin member and the grip core member via the material injection section.
Then, the molten molding material extruded from the injection portion through the piston member moves the air present in the mold cavity to the base end side of the grip core member, and this air is smoothly expelled from the air vent hole. . As a result, the grip of the present invention is less likely to generate voids and the like, has a good appearance, and can further enhance the sense of quality in the vehicle interior.

[0016]

Next, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIGS. 1, 2 and 3 show a molding process in which the present invention is applied to a grip of a parking brake operating lever. FIG. 1 is an explanatory sectional view showing an insert member, and FIG. FIG. 3 is an explanatory cross-sectional view showing a state of filling, and FIG. 3 is an explanatory cross-sectional view showing a state of pressing the filled molten resin with a piston.

The insert member I shown in FIG. 1 includes a grip skin member 34 and a grip core member 36 inserted into the grip skin member 34.

The grip skin member 34 is made of natural leather,
It is made of a leather material such as artificial leather or synthetic leather or a cloth-like material, and is formed into a predetermined tubular shape by sewing or bonding with a sewing machine or the like. The grip skin member 34 is set with its sewing allowance or glue allowance inside. In addition, this grip skin member 3
Numeral 4 is made of synthetic resin integrally molded in a cylindrical shape, and may be a material having no seam allowance.

The grip core member 36 is formed of a resin or metal cylinder having a higher hardness than the resin constituting the grip body 32 so that the mechanical strength and rigidity of the grip 30 to be molded can be sufficiently secured. I have. And
The proximal end opening 37 of the grip core member 36 has a stepped shape with a slightly larger diameter, and its flange 37a has an appropriate number of axially penetrated grips to be manufactured. Each air vent hole 50 is provided. On the other hand, on the side wall portion of the grip core member 36, an appropriate number of molding material injection ports 60 penetrating in a direction intersecting with the axial direction are provided. The molding material injection port 60 can be provided at any position on the side wall of the grip core member 36. However, in order to effectively expel air in the molding die cavity, it is preferable that the molding material injection port 60 be located at the front end as much as possible. . Further, the distal end portion 36a of the core member 36 is formed with a slightly enlarged diameter, and the outer peripheral surface 36b has a cross-sectional shape of:
In consideration of a molding material to be injected later, it has a curved shape that fits with the grip skin member 34.

The distal end portion 34a of the grip skin member 34 is folded back along the inner wall of the distal end portion 36a of the grip core member 36, and the cap member 38 is further fitted inside the folded portion. The distal end portion 34a is fixed on the distal end side of the grip core member 36. The cap member 38 has a cylindrical shape as a whole, and its tip end is formed in a flange shape along the outer surface of the grip skin member 34. Also,
A proximal end 34b of the grip skin member 34 is disposed along the outer peripheral surface of the proximal opening 37, and the proximal end 34b is further provided with a clamp ring C attached to the outer periphery thereof.
Has been fixed by. Therefore, the insert member I
The grip core member 36 is arranged along the center axis, and the outer periphery of the grip core member 36 is surrounded by the grip skin member 34 in a bag shape.

The grip mold 40 shown in FIG.
Split mold 42 for defining the outer shape of grip 30 to be molded
a and 42b, and a positioning member 46 for positioning the insert member I.

The split dies 42a and 42b are configured so that they can be moved in the left and right directions in FIG. 2 by driving means (not shown). Further, the positioning member 4
Numeral 6 is a column made of metal or the like, and its base end 46a has concave portions 44a, 4a formed in the split dies 42a, 42b.
4b, and its tip 46b is arranged so as to protrude into the cavity of the gripping mold 40. Then, by inserting the cap member 38 constituting the insert member I and the insertion hole of the grip core member 36 into the distal end portion 46b of the positioning member 46,
The positioning of the insert member I is performed.

Next, the process of forming the grip 30 using the grip forming die 40 will be specifically described. (a) First, the insert member I shown in FIG. 1 is formed by the method described above. (b) The insert member I is disposed at a predetermined position in the cavity of the gripping mold 40 via the positioning member 46. (c) A prescribed amount of molten resin 70 is filled into the cavity of the gripping mold 40 from the resin supply source 90 through the base end side opening 37 of the gripping core member 36 as shown in FIG. (d) Next, as shown in FIG.
, A piston member 80 having the same outer diameter as the inner diameter of the grip core member 36 is inserted, and the piston member 80 is pressed downward in FIG.
From the molding material injection port 60 to the grip skin member 3
The molten resin 70 is injected between the grip skin member 34 and the grip core member 36 by extruding to the second side,
Filling and forming the grip body 32 integrally therewith.

At this time, the air in the cavity and the air bubbles generated during filling and extrusion (injection) are discharged to the outside through the air vent hole 50.

The kind of the resin constituting the grip body 32 is not particularly limited, but is preferably an elastomer having an appropriate elasticity in order to improve the tactile sensation when the grip 30 is gripped. Any type of non-foaming resin can be used. (e) At the stage where the resin has hardened and the molding of the grip body 32 has been completed, the split dies 42a and 42b are separated and moved, and the positioning member 46 and the piston member 80 are separated, as shown in FIG. A cylindrical grip 30 having a hollow portion 39 for rod insertion is formed along the central axis.

The base end 34 of the grip skin member 34
After completion of molding, the clamp ring C for fixing b
It can be removed if necessary. Further, the base end 34b of the grip skin member 34 is fixed to the grip body 32 by an adhesive, heat welding, or the like, if necessary.

Next, the operation of the present embodiment will be described.

According to the above embodiment, since the grip skin member 34 can be mechanically sewn in advance by a sewing machine or the like, the working efficiency can be greatly improved as compared with the conventional hand sewing.

Further, an insert member I whose overall shape of the grip is defined by the grip skin member 34 and the grip core member 36 is formed, and the insert member I is set inside the cavity of the grip mold 40, and Since the finished product of the grip can be obtained only by performing the molding as described above, the production efficiency can be dramatically improved.

Also, unlike the conventional winding and bonding process of the grip skin member and the sewing process, no skill is required, and even a non-skilled person can easily manufacture the grip.

Further, since the grip body 32 and the grip skin member 34 can be integrally formed by insert molding, as shown in FIG. 2, the tension of the grip skin member 34 is uniform and there is no unevenness of the seam. As a result, an excellent tactile sensation can be obtained when the grip 30 is gripped, and a visually refreshing and smart feeling can be given.

Further, the grip core member 36 can be integrally provided inside the grip main body 32 by insert molding, and the mechanical strength and rigidity of the grip 30 can be sufficiently secured by the grip core member 36. As a result, the press-fitting operation to the lever main body 10 can be reliably performed, and the stability at the time of operating the lever can be enhanced.

Further, when the molding material injection port 60 is located at the distal end of the side wall of the grip core member 36, the air in the cavity is moved to the base end by the molten resin extruded from the injection port 60. As a result, since the air is smoothly discharged from the air vent hole 50, there is little molding failure. Therefore, the grip according to the present embodiment has a good appearance and can meet the recent consumer's desire to improve the sense of quality in the passenger compartment.

Further, the molten resin 70 is supplied to the base side opening 3
7, the resin is extruded and injected by the piston member 80 to form the grip body 32, so that the injection pressure, speed and viscosity of the resin can be easily controlled. The quality is also stable.

Further, since the mold is a vertical mold, a special resin injecting machine is not required, and air in the cavity and air bubbles generated during filling and extruding (injecting) of the resin are formed by air and resin. It is easily discharged from the air vent hole 50 due to the specific gravity difference. Therefore, almost no voids are observed in the manufactured grip, and it is possible to obtain a grip with high molding efficiency without forming defects.

Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and various modifications can be made within the scope of the invention.

For example, in the above-described embodiment, the material forming the grip body 32 is not limited to resin, but rubber and the like can also be used.

The structure of the forming die for forming the grip 30 and the means for positioning the insert member I can take various forms depending on the configuration of the grip 30. For example, the forming die is a horizontal type. Can also be used. .

Further, in the above embodiment, the case where the present invention is applied to the grip of the parking brake operating lever has been described. However, the present invention is not limited to this and can be applied to the grip of the gear shift lever and the like. .

[0041]

According to the present invention, it is possible to manufacture a high-quality grip with excellent operation quality even at an unskilled person, without the need for a manual sewing process of the grip skin member. Thus, it is possible to provide a grip and a method for manufacturing the grip, which can achieve a significant improvement in productivity and a reduction in cost.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view showing an insert member according to a preferred embodiment of the present invention.

FIG. 2 is an explanatory sectional view showing a preferred embodiment of the present invention and showing a state where a molding material is filled.

FIG. 3 is an explanatory sectional view showing a preferred embodiment of the present invention and showing a state where a filled molding material is being pressed.

FIG. 4 is an explanatory perspective view showing a state in which a grip obtained by the present invention is mounted on a lever main body.

FIG. 5 is an explanatory perspective view showing an example of a conventional operation lever.

FIG. 6 is an explanatory sectional view taken along the line AA of FIG. 5;

[Explanation of symbols]

 Reference Signs List 30 grip 32 grip body 34 grip skin member 36 grip core member 37 opening 40 grip molding die 42a, 42b split die 50 air vent hole 60 molding material injection port 80 piston member I insert member

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁶ Identification code FIB29L 31:30 (56) References JP-A-4-220320 (JP, A) JP-A-59-197270 (JP, A) JP-A-59-194766 (JP, A) JP-A-2-108510 (JP, A) JP-A-4-148908 (JP, A) JP-A-3-186911 (JP, A) JP-A-63-8680 (JP) JP, A) JP-A-62-46632 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B29C 45/00-45/84 B29C 39/10 B60T 7/08

Claims (2)

(57) [Claims] A grip constituted by coating a surface of a grip body made of resin or rubber with a skin or cloth-like grip skin member, wherein a cylindrical grip core member is provided along the axial direction of the grip. The grip core member has a molding material injection portion on a side wall thereof and an air vent hole on a base end side. 2. A method for manufacturing a grip constituted by coating a surface of a grip body made of resin or rubber with a skin or cloth-like grip skin member, comprising the following steps (a) to (d). Characteristic grip production method. (a) A cylindrical gripping core member having a bag material or a cylindrical shaped gripping skin member formed in a predetermined shape, a molding material injection part on a side wall part thereof, and an air vent hole at a base end part. Place. Then, the tip of the grip skin member is fixed to the tip of the grip core member to form an insert member. (b) Set the insert member in the cavity of the grip mold. (c) A predetermined amount of the molten molding material is filled into the cavity of the grip mold via the base end side opening of the grip core member. (d) By inserting a piston member into the opening and pressing the molten molding material, the molten molding material is extruded from the molding material injection portion toward the grip skin member side, while releasing air in the cavity from the air vent hole. A grip body is integrally formed between the grip skin member and the grip core member.