JP3916830B2 - Mounting substrate having soft protrusion and method of manufacturing the same - Google Patents

Description

[0001]
【Technical field】
The present invention relates to a mounting substrate having a soft protrusion including a protrusion made of an elastomer having a low compatibility with a main body portion made of an olefin resin, and a mounting substrate for mounting the protrusion to the main body portion, and a method for manufacturing the same It is about.
[0002]
[Prior art]
As a device having a soft protrusion on the main body portion, for example, a massage device for massaging the body or the like by the protrusion is known, and as a soft material used for the protrusion, for example, an elastomer is generally used.
[0003]
However, when trying to attach the soft protrusion directly to the main body part with an elastomer having a relatively low compatibility with the main body part, it is difficult to attach the protrusion to the main body part easily by welding. May occur.
[0004]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above-described problems, and includes a projection made of an elastomer having a low compatibility with a main body portion made of an olefin resin, and the projection on the main body portion easily and reliably. It is an object of the present invention to provide a mounting substrate having a soft projection provided with a mounting substrate for mounting on the substrate, and a manufacturing method thereof.
[0005]
[Means for Solving the Problems]
In order to solve this problem, according to the present invention, a mounting substrate having a soft protrusion includes a protrusion made of an elastomer having low compatibility with a main body portion made of an olefin resin, and an attachment for attaching the protrusion to the main body portion. A state in which the mounting substrate is molded with an olefin resin having high compatibility with the main body portion, the concave portion having a retaining structure is provided in the mounting substrate, and the mounting substrate is set in a mold. When the protrusion is formed in the mold, the elastomer is protruded from the recess, and the protrusion is formed integrally with the mounting substrate. and characterized in that it has an auxiliary projection that can be stably positioning the mounting substrate in to prevent displacement within the mold at Is shall.
[0006]
According to the present invention, the protrusion made of an elastomer having a low compatibility with the main body portion is attached to the main body portion via the mounting substrate made of an olefin resin having a high compatibility with the main body portion. Since it becomes easy to attach the protrusion made of an elastomer having low compatibility with the main body portion to the main body portion, the productivity is improved and the production cost is reduced.
[0007]
In the present invention, the protrusion is insert-molded with the mounting substrate set in a mold. In this case, even when the protrusion has a complicated shape, it is not necessary to consider burrs that are likely to occur when insert molding is directly performed on the main body portion, and in addition, there is an unreasonableness in the mold structure. As a result, productivity is further improved and production costs are further reduced.
[0008]
Further, in the present invention, the mounting substrate having the soft projection is insert-molded by providing an auxiliary projection on the surface of the mounting substrate on which the projection protrudes, and the auxiliary projection is inserted into the mold in the mold. Displacement of the mounting substrate at the time of forming the protrusion is prevented. In this case, it is possible to stably position the mounting substrate in the mold by the auxiliary protrusion while ensuring a large contact surface between the main body portion and the mounting substrate.
[0009]
In addition, in the present invention, it is preferable that the attachment substrate is attached to the main body portion by ultrasonic welding. In this case, the attachment substrate and the main body portion can be firmly bonded.
[0010]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0011]
FIG. 1 is a front view showing a massage instrument for massaging a body or the like, which is a reference technique for explaining a mounting substrate having soft protrusions according to the present invention.
[0012]
In the massage device as the reference technique, a gripping portion 10 for a user to grip is attached to a main body portion 20, and a mounting substrate 30 described later is attached to the main body portion 20.
[0013]
The gripping part 10 can be hollow or solid as appropriate. In the former case, the grip portion 10 can be formed as a container containing a required liquid such as cosmetics, and the main body portion 20 and the protrusion 40 can be configured to have liquid permeability. In this case, it is possible to supply the liquid contained in the container to a required part such as the body through the body portion 20 and the protrusion 40 in the massage device.
[0014]
The main body portion 20 is preferably formed of an olefin resin such as polyethylene / polypropylene. The mounting substrate 30 is made of a material having a relatively high compatibility with the body portion 20 of the massage device, preferably, the same resin as the body portion 20. A protrusion 41 made of an elastomer 40, which is a soft material with relatively low compatibility, is integrally formed.
[0015]
2A, 2B, and 3 illustrate a method of manufacturing the mounting substrate 30 having the soft protrusion 41 described above. 2A is a cross-sectional view showing the mounting substrate 30 itself, and FIG. 2B is a cross-sectional view showing the mounting substrate 30 in which the soft protrusions 41 are integrally formed in FIG. 2A. FIG. 3 is a partial cross-sectional view showing a state in which the main body portion 20 is assembled to the grip portion 10 of the massage device from the side.
[0016]
Here, with reference to FIGS. 1-3, the manufacturing method of the mounting substrate which concerns on the same reference technique is demonstrated.
[0017]
The mounting substrate 30 formed of a material having a relatively high compatibility with the main body portion 20 is provided with recesses 32 having a retaining structure 31, and the protrusions 41 project the elastomer 40 from these recesses 32. It is formed by.
[0018]
As a preferred manufacturing method, first, as shown in FIG. 2A, a mounting substrate 30 is formed of a material having a relatively high compatibility with the main body portion 20, more preferably the same resin as the main body portion 20, The attachment substrate 30 is provided with a recess 32 having a retaining structure 31. In this case, the mounting substrate 30 is preferably molded into a flat shape, which facilitates the molding of the mounting substrate 30 and improves productivity.
[0019]
In the case of the reference technique, the recess 32 having the retaining structure 31 is open to the front surface 30a on the side from which the protrusion 41 protrudes, as shown in FIG. A retaining structure is formed by the shape groove. But the flange-shaped groove | channel 31 as a retaining structure does not need to be the structure opened to the back surface 30b.
[0020]
Next, as shown in FIG. 2B, the protrusion 41 is formed integrally with the mounting substrate 30 by causing the elastomer 40 to protrude from the recess 32 having the retaining structure 31. In this case, it is preferable that the elastomer 40 projected from the recess 32 has a flat finish on the surface 30a of the mounting substrate 30 except for the soft protrusion 41.
[0021]
In the reference technique , the protrusion 41 is preferably insert-molded in a state where the mounting substrate 30 is set as an insert part in a mold. In this case, even if the protrusion 41 has a complicated shape, there is no need to consider burrs that are likely to occur when directly performing insert molding on the main body portion, and in addition, there is an unreasonable problem in the mold structure. As a result, productivity is further improved and production costs are further reduced.
[0022]
As shown in FIG. 3, the main body portion 20 is attached in a cap shape to the grip portion 10, and the attachment portion includes, for example, an inward projection 21 provided on the inner side of the main body portion 20 and an outer side of the grip portion 10. It is set as the fitting part comprised with the provided groove | channel 11. However, the inward projection 21 of the main body portion 20 and the groove 11 of the gripping portion 10 are fitting portions constituted by a groove formed in the main body portion 20 and an inward projection formed in the gripping portion 10. Alternatively, the inward projection and the groove may be provided over a part or the whole of the circumferential direction.
[0023]
Further, as shown in FIG. 3, an attachment surface 22 for attaching the attachment substrate 30 having the soft protrusions 41 to the main body portion 20 is formed on the outer surface of the main body portion 20. Adhere to the mounting surface 22 of the main body portion 20. Specifically, it is preferable to attach the back surface 30b of the mounting substrate 30 to the main body portion 20 by ultrasonic welding. In this case, the mounting substrate 30 and the main body portion 20 can be firmly bonded.
[0024]
FIG. 4 shows an embodiment of the present invention, and is a front view showing a part of a massage device for massaging a body or the like, similar to the reference technique . In FIG. 4, the same parts as those in FIGS.
[0025]
The massage device according to this example is provided with a plurality of auxiliary projections 33 on the surface 30a of the mounting substrate 30 of the same reference technology , and the auxiliary projections 33 project in the same direction as the projections 41.
[0026]
5A and 5B are views for explaining a method of manufacturing the mounting substrate 30 according to this embodiment. 5A is a cross-sectional view taken along the line AA showing the mounting substrate 30 of FIG. 4, and FIG. 5B is a side view showing the mounting substrate 30 in which the soft protrusion 41 is formed in FIG. 5A. is there. 5A and 5B, the same parts as those in FIGS. 1, 2A, 2B, and 3 are denoted by the same reference numerals, and the description thereof is omitted. For the description of the present embodiment, FIG.
[0027]
A method for manufacturing the mounting substrate according to the present embodiment will be described with reference to FIGS.
[0028]
In this embodiment, as in the first embodiment, the protrusion 41 is insert-molded with the mounting substrate 30 set as an insert part in the mold. A plurality of auxiliary protrusions 33 are integrally formed on the surface 30a side.
[0029]
Therefore, the mounting substrate 30 having the soft protrusions 41 according to the present embodiment is insert-molded by providing the auxiliary protrusions 33 on the surface 30a of the mounting substrate 30 on the side where the soft protrusions 41 protrude. Displacement of the mounting substrate 30 at the time of molding the soft protrusion 41 in the mold is prevented. In this case, it is possible to stably position the mounting substrate 30 in the mold by these auxiliary projections 33 while ensuring a large contact surface between the mounting surface 22 of the main body portion and the back surface 30b of the mounting substrate 30. .
[0030]
The auxiliary protrusions 33 are arranged at a predetermined interval, and the elastomer 40 protruded from the concave portion 32 flows between the auxiliary protrusions 33 and the surface of the mounting substrate 30 except for the portion where the soft protrusions 41 are formed. The finish on 30a is preferably flat.
[0031]
Although there are various methods for attaching the attachment substrate 30 to the main body portion 20, it is preferable that the attachment substrate 30 is attached to the main body portion 20 by ultrasonic welding as in the reference technique .
[0032]
As is apparent from the above description, according to the present invention, the protrusion 41 made of the elastomer 40 having a relatively low compatibility with the main body portion 20 is made of a material having a relatively high compatibility with the main body portion 20. Since it is attached to the main body portion 20 via the mounting substrate 30, it is easy to attach the protrusion 41 made of the elastomer 40 having relatively low compatibility with the main body portion 20 to the main body portion 20, so that productivity is improved. And production costs are reduced.
[Brief description of the drawings]
FIG. 1 is a front view showing a massage device which is a reference technique of the present invention.
FIGS. 2A and 2B are cross-sectional views illustrating a method for manufacturing a mounting substrate according to the reference technique , respectively.
FIG. 3 is a partial cross-sectional view showing a state in which a main body portion and a grip portion of the massage device are assembled from the side.
FIG. 4 is a front view showing a part of the mounting substrate according to the embodiment of the present invention.
FIGS. 5A and 5B are cross-sectional views illustrating a method for manufacturing a mounting substrate according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Gripping part 20 Main body part 21 Fitting protrusion 20 Gripping part 21 Fitting groove 30 Mounting substrate 30a Front surface 30b Back surface 31 Recess 32 Retaining structure 33 Auxiliary protrusion 40 Elastomer 41 Soft protrusion

Claims (4)

A projection made of an elastomer having low compatibility with the main body portion made of an olefin-based resin, and a mounting substrate for attaching the projection to the main body portion;
The mounting substrate is made of an olefin resin having high compatibility with the main body portion, has a recess having a structure for preventing the protrusion from being inserted, and is an insert in a state where the mounting substrate is set in a mold. By molding, the elastomer is projected from the recess, and the projection is molded integrally with the mounting substrate, and on the surface on which the projection projects, the displacement during molding of the projection in the mold is reduced. wherein the prevention to have a stable auxiliary protrusions which Ru can be positioned to the mounting substrate in the mold, mounting substrate having a soft protrusion.   2. The mounting substrate having soft protrusions according to claim 1, wherein the mounting substrate is attached to the main body portion by ultrasonic welding. A method of manufacturing a projection made of an elastomer having low compatibility with a main body portion made of an olefin-based resin, and a mounting substrate for attaching the projection to the main body portion,
The mounting substrate is molded with an olefin resin having high compatibility with the main body portion, and the concave portion having a retaining structure on the mounting substrate and molding of the projection in the mold on the surface from which the projection protrudes. stable auxiliary protrusions because it is possible to position provided, insert molding the protrusion at setting the mounting substrate into a mold said mounting substrate in to prevent within the mold displacement during Then, the protrusion is formed integrally with the mounting substrate by causing the elastomer to protrude from the recess, and the method of manufacturing the mounting substrate having a soft protrusion.   4. The method of manufacturing a mounting substrate having soft protrusions according to claim 3, wherein the mounting substrate is attached to the main body portion by ultrasonic welding.

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