JP7082813B2 - Insulation / sound absorbing press caps and fixtures - Google Patents

Description

The present invention relates to a holding cap for a heat insulating material or a sound absorbing material and a fixture for a heat insulating material or a sound absorbing material using the same, and in particular, at a predetermined position on a mounting surface such as a wall surface of a building or an outer surface of a duct of a large air conditioner. A holding cap for a heat insulating material or a sound absorbing material used when arranging a heat insulating material or a sound absorbing material, a holding cap for such a heat insulating material or a sound absorbing material, and a heat insulating material or a sound absorbing material arranged in a predetermined thickness. It relates to a fixture for a heat insulating material or a sound absorbing material, which is formed of a nail-shaped pin member having a screw portion formed at a tip portion, which is planted on a mounting surface to be installed.

Conventionally, glass wool has been used so as to cover the surface (mounting surface) of the base material of the inner wall or outer wall when performing interior work to enhance the heat insulating effect and soundproofing effect of the building when constructing the building. A heat insulating material or a sound absorbing material formed by molding rock wool or the like into a sheet having a predetermined thickness is arranged and fixed. Further, even in a unit type air conditioner or a large air purifier, in order to prevent noise, a sound absorbing material made of the same material as the above is usually applied to the outer panel of the duct. It is arranged.

Further, in order to dispose and fix such a heat insulating material or a sound absorbing material to a predetermined mounting surface, various fixing tools and fixing methods have been proposed and used, for example, actual opening. In Japanese Patent Application Laid-Open No. 55-15421 (Patent Document 1), one surface of the flat plate portion is an adhesive surface that is adhered and fixed to a wall surface such as a duct, while the other surface is the thickness of a heat insulating material. A pin with a sharp end of approximately the same length is projected, and the main body of the fixture is provided with a hooking portion on the tip side of the pin. Insulation / heat insulation material on the wall surface of a duct, etc. A retaining device for mounting the is revealed. According to the retaining device for attaching the heat insulating / heat insulating material proposed in Patent Document 1, since it is integrally formed of the synthetic resin material, it is more resistant to corrosion than the metal pin member. It has excellent properties and heat insulating properties, and as shown in Fig. 2, the portion of the outer contact member that presses the heat insulating / heat insulating material toward the mounting surface is thinned so that it protrudes from the surface of the heat insulating / heat insulating material. From the above, it is clarified that the finished product is also excellent in aesthetics.

However, in the retaining device for attaching the heat insulating / heat insulating material proposed in Patent Document 1, according to the structure shown in FIG. 3, the portion where the retaining portion is formed is formed. Since the tip of the cylinder is simply chamfered, if the coating or cover that covers the surface of the heat insulating / heat insulating material is difficult to tear, the heat insulating / heat insulating material is kept warm. It was difficult to insert the part where the hook receiving part of the outer contact member was formed from the surface of the material toward the tip of the pin mainly for the fixture located in the heat insulating / heat insulating material. .. For example, in the case of a heat insulating material or a sound absorbing material whose surface is covered with a glass cloth, even if the portion where the hook receiving portion of the outer contact member is formed is strongly pressed against the surface of the heat insulating material or the sound absorbing material, a hole is formed. Since it is not possible to make a hole, prepare a separate tool for making a hole, make a pilot hole with such a tool, and then insert the part where the hook receiving part of the outer contact member is formed to install it. Since it is necessary to engage with the tip of the pin, which is the main component of the tool, it causes a problem that the workability when the heat insulating / heat insulating material is attached to the mounting surface is deteriorated.

Moreover, as is clarified in FIG. 3 of Patent Document 1, a hooking protrusion formed on the outer peripheral surface of the pin of the main body of the fixture on the tip end side, and a hooking receiving portion of the outer contact member. In the locking means configured to connect the hooking grooves formed on the inner peripheral surface of the cylindrical hollow portion of the cylinder by engaging with the hooking grooves, the hooking protrusions and the hooking grooves are provided. Since it can be locked only at the place where it is locked, it is difficult to finely adjust the locking position between the fixture main body and the outer contact member. Therefore, the heat insulating / heat insulating material is attached to the mounting surface by the outer contact member. There is an inherent problem that it is difficult to arbitrarily adjust the height of pressing.

Further, in FIG. 5 of the patent document, a screw thread is formed in the hooking portion of the pin of the fixture main body, and a screw hole corresponding to the screw thread is formed in the hooking receiving portion of the outer contact member. Further, a structure having a hooking means provided with a position adjusting function by screwing them has also been clarified. According to the retaining device having such a hooking means, the outer contact member is rotated to adjust the locking position between the fixture main body and the outer contact member, or the outer contact member once attached is attached. It is possible to easily remove it from the main body of the tool, but it takes time and effort to screw it from the tip of the pin into the screw hole of the outer contact member and screw it into the target position. In addition to the inherent problem in the workability of attaching the outer contact member to a large number of pins, when the outer contact member is pressed in the direction of the pin of the main body of the fixture and mounted so as to be press-fitted, The threads formed on the pins of the fixture main body and the threads of the screw holes of the hook receiving part are deformed or damaged, and the mounting tool main body and the outer contact member can be sufficiently engaged. There was also an inherent fear of disappearing.

Further, in FIGS. 6 and 7 of Patent Document 1, a slit is formed in the cylindrical hook receiving portion of the outer contact member, and the diameter of the cylindrical hollow portion is the diameter of the pin of the main body of the fixture. It is also clear that the pin is slightly smaller than the above, and when the pin is inserted into the hook receiving part, it is press-fitted while opening the slit so that the pin is stopped by the returning force of the hook receiving part. However, there is a possibility that it will easily come off from the place where it is simply held by the returning force of the hooking and receiving part formed of the resin material, and in addition, it has a tubular shape. Since the slit formed in the hook receiving portion of the above extends to the joint surface with the disc-shaped restraining portion, if the pin of the fixture main body is pressed too much into the hook receiving portion, those joint surfaces will be formed. There is also an inherent risk that the outer contact member will not be able to be hooked to the pin of the main body of the fixture due to breakage.

Jitsukaisho 55-15421 Gazette

Here, the present invention has been made in the background of such circumstances, and the problem to be solved thereof is a predetermined invention arranged so as to cover a nail-shaped pin member planted on a mounting surface. A holding cap used to secure the heat insulating material or sound absorbing material to the mounting surface by being inserted from the surface of the heat insulating material or sound absorbing material having a thickness and engaging with the tip of the pin member. A heat insulating material or a sound absorbing material holder that can be easily engaged and fixed without the need for a separate tool, and the mounting height of the holding cap can be easily and arbitrarily adjusted. To provide a cap. Further, in the present invention, a heat insulating material or a heat insulating material composed of such a holding cap and a nail-shaped pin member planted on a mounting surface on which a heat insulating material or a sound absorbing material is arranged to have a predetermined thickness. Providing a fixing tool for a sound absorbing material is also an object to be solved.

Then, in the present invention, in order to solve such a problem, a heat insulating material or a sound absorbing material is attached to the tip of a nail-shaped pin member planted on a mounting surface in which a predetermined thickness is arranged. A resin head that presses the heat insulating material or the sound absorbing material as a holding cap for the heat insulating material or the sound absorbing material that is pierced through the pin member and presses the surface of the heat insulating material or the sound absorbing material. It is provided with a resin leg that is integrally suspended from the head and is engaged with and fixed to a screw portion provided at the tip of the pin member, and the legs are spaced apart from each other. It has a plurality of columnar claws arranged on the same circumference with a gap between the two, and a breakable thin-walled connecting portion for connecting adjacent ones of the plurality of columnar claws to each other on the base side thereof. Further, a slit-shaped gap is formed between the tips of the adjacent columnar claws, which is not provided with the thin-walled connecting portion, and the plurality of columnar claws and the thin-walled connecting portion form a slit-like gap. On the circular inner peripheral surface of the cylindrical portion to be formed, a screw portion that can be screwed into the screw portion of the tip portion of the pin member is provided, and further, the tip portions of the plurality of columnar claw portions are each provided. The tip shape is sharpened toward the tip, and the leg is inserted into the heat insulating material or the sound absorbing material from the tips of the plurality of columnar claws, and is engaged with the tip of the pin member. At the time of mating, the tip portion of the pin member is fitted into the tubular portion formed by the plurality of columnar claw portions and the thin-walled connecting portion while breaking the thin-walled connecting portion from the tip side of the tubular portion. The gist thereof is a holding cap of a heat insulating material or a sound absorbing material, which is configured to be engaged with a screw portion formed on the inner peripheral surface of the tubular portion. be.

According to one of the desirable embodiments of the heat insulating material or the sound absorbing material holding cap according to the present invention, the tips of the plurality of columnar claws are gradually narrowed and / or thinned toward the tips, respectively. Therefore, the tip shape is sharpened.

Further, according to one of the other desirable embodiments of the heat insulating material or the sound absorbing material holding cap according to the present invention, the thin-walled connecting portion has a length of 30% to 70% of the height of the columnar claw portion. On the other hand, the slit-shaped gap is formed at a length obtained by subtracting the length of the thin-walled connecting portion from the height of the columnar claw portion, and according to one of still more desirable embodiments, the plurality of said. The inner surface of the columnar claw portion on the tip end side is a smooth surface having no threaded portion at a length portion corresponding to the slit-shaped gap.

Further, in one of the other desirable embodiments of such a heat insulating or sound absorbing material holding cap according to the present invention, the legs are configured by a cylindrical portion integrally extending from the head. At the same time, the tubular wall portion of the cylindrical portion is thinned at a plurality of points in the circumferential direction to form the thin-walled connecting portion extending in the axial direction with a predetermined width.

Furthermore, in the holding cap of the heat insulating material or the sound absorbing material according to the present invention, a screw provided on the inner peripheral surface of the tubular portion formed by the plurality of columnar claw portions and the thin-walled connecting portion is preferable. Of the inclined surfaces on both sides of the screw thread of the portion, the inclination angle of the one located on the base side of the columnar claw portion is larger than the inclination angle of the one located on the tip end side of the columnar claw portion. On the other hand, among the inclined surfaces on both sides of the thread of the screw portion provided at the tip of the pin member, the one located on the tip side of the pin member is located on the base side of the pin member with respect to the inclination angle. It is configured so that the tilt angle of the object located in is large.

In addition, in one of still more preferable embodiments of the heat insulating material or sound absorbing material holding cap according to the present invention, the outer surfaces of the plurality of columnar claws are respectively from the base to the tip of the columnar claw. It is configured to be inclined inward toward the tip side to form a tapered surface having a gradually smaller diameter on the tip side as a whole.

Further, in the present invention, the resin holding cap having the above-described configuration and the threaded portion at the tip portion are planted on the mounting surface on which the heat insulating material or the sound absorbing material is arranged to have a predetermined thickness. A fixing tool for a heat insulating material or a sound absorbing material, which is characterized by being composed of a formed nail-shaped pin member, is also a gist thereof.

In one of the desirable embodiments of the heat insulating material or the sound absorbing material fixture according to the present invention, the pin member is integrated with the head to be fixed to the mounting surface with respect to the head. It is composed of a pin body portion having a predetermined length in which a screw portion is formed at a tip portion, which is vertically suspended, and in one of still more desirable embodiments, the pin member is: The head and the pin body are integrally formed of a resin molded product.

As described above, in the heat insulating material or sound absorbing material holding cap according to the present invention, the resin head that presses the heat insulating material or the sound absorbing material and the resin legs integrally hung on the head. In addition to being composed of parts, the legs are connected to each other with a plurality of columnar claws arranged on the same circumference at predetermined intervals and adjacent ones of the plurality of columnar claws. The legs of the presser cap are made of heat insulating material or sound absorbing material because they are composed of a breakable thin-walled connecting part and the tip of the columnar claw has a tip shape that is sharpened toward the tip. When mounting to the tip of a nail-shaped pin member planted on the mounting surface to fix, such sharpened columnar claws cover the surface of the heat insulating material or sound absorbing material, such as glass cloth. Efficiently and easily breaks through and penetrates, and easily inserts the heat insulating material or sound absorbing material made of a material such as glass wool into the tip of the pin member located inside the heat insulating material or sound absorbing material. It can be pushed forward, and thus can be easily engaged with the head of the pin member.

Therefore, according to the holding cap according to the present invention, unlike when mounting a conventional holding cap, a tool for making a hole in a coating such as a glass cloth on the surface of a heat insulating material or a sound absorbing material is not required, and thus a mounting surface is not required. It is possible to effectively improve the workability when fixing the heat insulating material or the sound absorbing material to the glass.

Further, in the case of the holding cap of the heat insulating material or the sound absorbing material according to the present invention, the circular inner peripheral surface of the tubular portion formed from the plurality of columnar claws constituting the leg portion and the thin-walled connecting portion. In addition, the holding cap is engaged with the pin member from the place where the threaded portion having a shape that can be screwed with the threaded portion formed at the tip of the pin member is provided to engage the leg portion. In addition to being able to perform firmly, the screwing length between the threaded portion of the presser cap and the threaded portion of the pin member can be adjusted by rotating the head of the presser cap. The height at which the surface of the heat insulating material or the sound absorbing material is pressed by the pressing cap can be easily and easily adjusted.

Further, in the holding cap of the heat insulating material or the sound absorbing material according to the present invention, the legs, which are the portions to be engaged with the tip of the pin member, are arranged on the same circumference at predetermined intervals. Since it is composed of a plurality of columnar claws and a breakable thin-walled connecting portion that connects adjacent ones of the plurality of columnar claws to each other, the leg of the holding cap is attached to the tip of the pin member. A screw portion formed on the inner peripheral surface of the tubular portion formed by the plurality of columnar claw portions and the thin-walled connecting portion, and a screw portion formed on the outer peripheral surface of the tip portion of the pin member by pressing against the screw portion. By pushing the holding cap strongly against the pin member, the thin-walled connecting part can be deformed or broken even if the screw parts are not rotated so as to be screwed one by one at the time of engagement with. Since the inner diameter of the tubular part can be slightly expanded, it is possible to engage the threaded parts without damaging the threads of the threaded parts formed on the holding cap and the pin member. As a result, it is possible to push the screw portion all at once to the target screwing position without screwing the screw portion from the beginning and screwing the screw portions in sequence.

In addition, according to the heat insulating material or the sound absorbing material holding cap according to the present invention, the material forming the heat insulating material or the sound absorbing material is a resin material, and the head and the leg portion giving the whole shape thereof are integrally formed. Therefore, it is possible to make the thermal conductivity smaller than that of the holding cap made of metal, and it is possible to effectively exert the heat insulating performance of the heat insulating material attached to the mounting surface. It is.

Further, in the present invention, a screw portion is formed at the tip portion, which is planted on a holding cap made of resin as described above and a mounting surface on which a heat insulating material or a sound absorbing material is arranged with a predetermined thickness. Since the fixing tool for heat insulating material or sound absorbing material is configured from the nail-shaped pin member, it is special when arranging and fixing the heat insulating material or sound absorbing material to the mounting surface. It is possible to pierce the covering of the surface of the heat insulating material or sound absorbing material such as glass cloth without using a tool, and the leg of the holding cap can be pierced to engage the tip of the pin member with the leg of the holding cap. In addition to this, the engagement position between the pin member and the holding cap is possible simply by adjusting the screw length of the threaded portion formed in those engaging portions. It is also possible to enjoy the advantage that the workability when installing and installing the heat insulating material and the sound absorbing material can be effectively improved.

It is explanatory drawing which shows an example of the holding cap for a heat insulating material / sound absorbing material according to this invention, (a) is in the form of a front view, (b) is in the form of a plan view, (c) is (c). It is shown in the form seen in the direction of arrow C in b). It is explanatory drawing which shows the cross section of the holding cap shown in FIG. 1, (a) is the sectional explanatory view which shows the cross section of AA in FIG. 1 (a), and (b) is FIG. 1 (b It is a cross-sectional explanatory view which shows the BB cross section in). It is explanatory drawing which shows an example of the pin member used together with the holding cap shown in FIG. 1, (a) is in the form of a front view, (b) is in the form of a plan view, (c) is It is shown in each of the DD cross-sectional forms in b). It is sectional drawing which shows the shape of each screw part of the holding cap shown in FIG. 1 and the pin member shown in FIG. 3 in an enlarged manner. It is explanatory drawing which shows the work of fixing a heat insulating material with respect to a mounting surface by using a holding cap and a pin member according to this invention, and (a) to (d) are each of the work steps. It is explanatory drawing which shows step by step. It is sectional drawing which shows an example of adjusting the mounting height of a pin member and a holding cap when fixing a heat insulating material with respect to a mounting surface by using a holding cap and a pin member according to the present invention.

Hereinafter, in order to clarify the present invention more specifically, a typical embodiment of the present invention will be described in detail with reference to the drawings.

First, FIGS. 1A to 1C are used when arranging a heat insulating material on a mounting surface such as an inner wall of a building having a structure as a heat insulating material and a holding cap for a sound absorbing material according to the present invention. An example of a holding cap for insulation is shown. Here, (a) is a form of a front view, (b) is a form of a plan view, and (c) is a form seen from a different angle from (a) [FIG. 1 (b). ) In the direction of the C arrow] are shown respectively. As is clear from those figures, the heat insulating material holding cap 10 has a circular flat plate-shaped head 12 and legs 14 suspended at a predetermined height at a substantially central portion of the head 12. It is composed of and. The head portion 12 and the leg portion 14 have an integral structure by an integrally molded product made of various known resin materials.

More specifically, the head 12 is made of a heat insulating material or a sound absorbing material from various known resin materials such as PP (polypropylene resin) and ABS (acrylonitrile, butadiene, styrene resin), or a resin material in which they are mixed. The material is formed so as to exhibit a disk shape having a predetermined thickness by using a material appropriately selected according to the environment of the mounting place and the like. On the other hand, as shown in FIGS. 1 (a) to 1 (c) and FIG. The four columnar claws 16 arranged on the same circumference with the two columns separated from each other and the adjacent ones of the four columnar claws 16 are connected to the head 12 which is the base side thereof. In the above, it is composed of a breakable thin-walled connecting portion 18 that is connected to each other, and is integrally formed with the head 12 by an integral molding operation using the same resin material as the head 12. .. The presence of the thin-walled connecting portions 18 located between the columnar claw portions 16 allows the four columnar claw portions 16 to be more effectively and firmly connected to each other on the base side thereof. ..

Further, as shown in FIGS. 1A and 1C, the outer surface of the four columnar claw portions 16 is inclined inward from the base side toward the tip side, and the four columnar claw portions 16 are inclined inward. The substantially cylindrical shape formed by the outer surfaces of the three columnar claw portions 16 is configured to provide a tapered surface 20 whose diameter gradually decreases toward the tip side as a whole. Further, the tip 22 of the four columnar claw portions 16 has a larger inclination angle than the tapered surface 20, and the tip 22 is sharpened by gradually narrowing and thinning toward the tip. It is configured to be. The formation of the sharpened tip 22 and the tapered surface 20 facilitates the insertion operation of the leg portion 14 into the heat insulating material or the sound absorbing material.

Then, between the tip ends of the adjacent columnar claw portions 16 and 16 of such a columnar claw portion 16, a thin-walled connecting portion 18 for connecting the columnar claw portions 16 and 16 to each other is not provided, and a predetermined value is provided. A gap is formed to form a slit 24. As a result, the leg portion 14 has four independent sharpened needle-like protrusions at its tip portion. The length of the thin-walled connecting portion 18 in the leg portion 14 is preferably formed at a length of 30% to 70% of the height of the columnar claw portion 16. This is because when the length of the thin-walled connecting portion 18 is smaller than 30% of the length of the entire columnar claw portion 16, it becomes difficult for the thin-walled connecting portion 18 to sufficiently exert the effect of improving the strength, and the columnar claws. If it becomes larger than 70% of the total length of the portion 16, the length of the slit 24 becomes too short. Therefore, the columnar claw portion 16 breaks through the coating such as the glass cloth covering the surface of the heat insulating material, and the holding cap 10 This is because it becomes difficult to sufficiently exert the action of pushing the leg portion 14 (columnar claw portion 16) into the heat insulating material.

Further, as shown in the cross-sectional view of FIG. 2B, a pin member described later is formed on the circular inner peripheral surface of the tubular portion formed by the four columnar claw portions 16 and the thin-walled connecting portion 18. A female screw 26 having a thread groove shape that can be screwed into the screw portion formed at the tip portion of the 30 is provided. Such a female screw 26 is formed here only on the circular inner peripheral surface of the tubular portion formed by the columnar claw portion 16 and the thin-walled connecting portion 18, and the slit 24 of the columnar claw portion 16 is provided. The inner surface of the portion provided is a smooth surface on which the female screw 26 is not provided. As described above, since the tip side of the columnar claw portion 16 has a smooth surface without the female screw 26, the tip of the pin member is prevented from engaging with the screw portion provided at the tip portion of the pin member described later. While allowing the portion to enter the leg portion 14 immediately, the threaded groove causes an extra catch when the sharpened tip portion of the columnar claw portion 16 breaks through the coating such as glass cloth on the surface of the heat insulating material. It is possible to eliminate the occurrence and more effectively exert the effect of the columnar claw portion 16 on the coating of the glass cloth or the like on the surface of the heat insulating material.

By the way, when the heat insulating material or the sound absorbing material is attached to a predetermined mounting surface by using such a pressing cap 10, the pin member 30 as shown in FIGS. 3 (a) to 3 (c) presses. It will be used together with the cap 10. There, the pin member 30 is a rectangular plate-shaped head 32 having a predetermined thickness, and an elongated cylindrical pin body portion 34 provided so as to rise vertically from a substantially central portion of such a head 32. It is composed of and.

More specifically, the head portion 32 and the pin body portion 34 constituting the pin member 30 are integrally formed of an integrally molded product made of the same resin material as the above-mentioned pressing cap 10, and have a predetermined thickness. One side of the rectangular plate-shaped head 32 is an adhesive surface for fixing the pin member 30 to the surface to which the heat insulating material is attached by using an adhesive or the like. On the other surface, an elongated cylindrical pin body 34 inserted into the heat insulating material is formed in order to fix the heat insulating material. Further, the plate-shaped head 32 is provided with a plurality of holes 32a penetrating the holes 32a, and the adhesive or the like enters the holes 32a to improve the fixing strength of the pin member 30 to the mounting surface. It is possible to be.

The columnar pin body portion 34 is formed so that the tip portion thereof has a tapered surface 36 whose diameter gradually decreases toward the tip and has a needle shape with a sharp tip. Further, a female screw 26 provided on the leg portion 14 of the holding cap 10 described above is screwed onto the outer peripheral surface of the pin body portion 34 on the base side (head 32 side) of the tapered surface 36. A mountain-shaped male screw 38 is formed over a predetermined length in the length direction of the pin body portion 34.

Further, the end portion of the pin body portion 34 on the base side, that is, the joint portion between the pin body portion 34 and the head portion 32 is, here, a tapered surface 40 whose outer shape gradually becomes larger in diameter, and the pin body portion. It is configured so that the connection strength between the 34 and the head 32 is increased. The length of such a pin main body 34 is set to be slightly smaller than the thickness of the heat insulating material or sound absorbing material to be attached, the pin member 30 is attached to the mounting surface, and the pin main body is attached to the heat insulating material. It is configured so that the tip of the pin body 34 does not protrude from the surface of the heat insulating material when the 34 is inserted.

By the way, the screw thread (thread groove) shape of the male screw 38 formed on the outer peripheral surface of such a pin main body 34 and the female screw 26 formed on the leg 14 of the holding cap 10 described above is generally used. Similar to the screw used, it does not matter if the inclination angle of the slopes on both sides forming the screw thread (thread groove), that is, the inclination angle with respect to the axial direction of the screw is the same. However, in the present invention, it is preferable that the shape is as shown in FIG. In FIG. 4, in order to engage the leg portion 14 of the holding cap 10 with the pin body portion 34 of the pin member 30, the state in which they face each other and the female screw 26 and the pin on the holding cap 10 side in that state are shown. Enlarged portions of the male screw 38 on the member 30 side are shown in the form of the cross-sectional view.

First, the female screw 26 formed on the leg portion 14 of the holding cap 10 has an inclined surface 26a (tip) located on the tip end side of the columnar claw portion 16 among the inclined surfaces on both sides constituting the thread. Inclination angle of the inclined surface 26b (the surface facing the base side) located on the base side of the columnar claw portion 16: β ₁ is larger than the inclination angle of the surface facing the portion side): α ₁ . It will be formed so as to be an angle. On the other hand, the male screw 38 formed on the pin main body portion 34 of the pin member 30 has an inclined surface 38a (tip portion) located on the tip end portion side of the pin main body portion 34 among the inclined surfaces on both sides constituting the screw thread. Tilt angle of the side-facing surface): The tilt angle of the inclined surface 38b (the surface facing the base side) located on the base side of the pin body 34: β ₂ is larger than that of α ₂ . It is formed so as to be.

As described above, among the inclination angles of the thread grooves of the female screw 26 and the male screw 38, the inclination angle of the surface of the inclined surface of the thread groove of the female screw 26 facing the tip end side and the male screw 38 are screws. The pin body portion 34 of the pin member 30 is configured so that the inclination angle of each of the inclined surfaces of the mountain facing the tip end side is smaller than the inclination angle of the other surface. When the tip of the screw is inserted into the leg 14 of the cap 10 and the male screw 38 provided on the pin body 34 is relatively press-fitted into the female screw 26 provided on the leg 14, such Since the surfaces having a small inclination angle come into contact with each other, the ridge of the male screw 38 can easily get over the ridge of the female screw 26, and a force is applied in the direction of removing the male screw 38 from the female screw 26. When is added, each of the inclined surfaces having a large inclination angle makes it difficult for the screw thread to get over, so that the movement of the female screw 26 and the male screw 38 in the detachment direction can be suppressed or prevented. It has become.

Then, when the heat insulating material is attached to the predetermined attachment surface by using the pin member 30 and the pressing cap 10, for example, the following is performed. First, as shown in FIG. 5A, the head portion 32 of the pin member 30 is attached to the mounting surface 50 using an adhesive or the like, and the pin body portion 34 of the pin member 30 is attached to the mounting surface 50. The pin member 30 is attached so that the pin member 30 is vertically installed. The pin member can be attached to the attachment surface 50 in various known directions such as an adhesive tape or a nail, in addition to using an adhesive. Then, the heat insulating material 52 is arranged on the surface of such a mounting surface 50, and the pin main body portion 34 of the pin member 30 is in a state of being pierced by the heat insulating material 52.

Next, as shown in FIG. 5B, the leg portion 14 of the pressing cap 10 is pierced into the surface 52a of the heat insulating material 52 so that the leg portion 14 of the pressing cap 10 approaches the tip end portion of the pin member 30. To. In this way, when the leg portion 14 of the pressing cap 10 is pierced from the surface of the heat insulating material 52 and brought close to it, the tip portion 22 of the leg portion 14 of the pressing cap 10 is sharpened, so that the heat insulating material 52 Even if the surface 52a of the surface 52a is covered with a coating of a relatively high-strength material such as glass cloth, the leg portion 14 can be pierced and pierced as it is.

After that, as shown in FIG. 5 (c), the tip of the pin body 34 of the pin member 30 is press-fitted into the leg 14 of the presser cap 10, so that the male formed on the pin body 34 is formed. The screw 38 and the female screw 26 of the leg 14 are sequentially engaged with each other. At this time, in order to screw the male screw 38 formed on the pin body 34 and the female screw 26 of the leg 14 into the pin body portion 34, the male screw 38 is usually rotated relatively. Although it is necessary, in the holding cap 10 of the present embodiment, the male screw 38 is press-fitted into the female screw 26 by forming the thin-walled connecting portion 18 at the portion where the female screw 26 is formed. At that time, since such a thin-walled connecting portion 18 is partially deformed or broken to form a rift 54, the threads of the female screw 26 and the male screw 38 can be easily engaged without breaking. It can be combined.

Then, by pushing (pressing in) the holding cap 10 to a height at which the head 12 of the holding cap 10 can hold the surface 52a of the heat insulating material 52, as shown in FIG. 5 (d). The fixing of the heat insulating material 52 to the mounting surface 50 by the holding cap 10 and the pin member 30 is completed.

When the pressing cap 10 is pushed in so that the head portion 12 sinks the surface 52a of the heat insulating material 52, and then the head portion 12 is returned to the same level as the surface 52a of the heat insulating material 52, the head portion 12 is returned. As shown in FIG. 6A, the head portion 12 of the presser cap 10 is rotated to be formed on the male screw 38 formed on the pin main body portion 34 of the pin member 30 and the leg portion 14 of the presser cap 10. By adjusting the screwing position with the female screw 26, the height at which the heat insulating material 52 is pressed by the pressing cap 10 so that the surface 52a of the heat insulating material 52 becomes flat as shown in FIG. 6 (b). Can be easily fine-tuned.

As described above, according to the holding cap 10 having a structure according to the present invention, the leg portion 14 that pierces the inside from the surface of the heat insulating material 52 and engages with the pin body portion 34 of the pin member 30 has its tip. Since it is composed of a plurality of sharpened columnar claws 16, even if the surface of the heat insulating material is covered with a coating of a relatively high-strength material such as glass cloth, a special tool should be used. As a result, the workability when fixing the heat insulating material 52 to the mounting surface 50 can be effectively improved.

Further, in such a holding cap 10, a female screw 26 is provided on the circular inner peripheral surface of the tubular portion formed by the four columnar claw portions 16 constituting the leg portion 14 and the thin-walled connecting portion 18. A place where it is provided so as to engage with a male screw 38 formed on the tip end side of a pin body portion 34 of a pin member 30 erected on a mounting surface 50 of a heat insulating material 52. Therefore, the pin member 30 and the holding cap 10 can be firmly engaged with each other, and by rotating the head portion 12 of the holding cap 10, the female screw 26 of the holding cap 10 and the male screw 38 of the pin member 30 can be obtained. By adjusting the screwing length, it is possible to easily adjust the height at which the surface of the heat insulating material 52 is pressed by the head portion 12 of the pressing cap 10.

Further, in the holding cap 10, a female screw 26 is formed on the inner peripheral surface of the tubular portion formed by the four columnar claw portions 16 constituting the leg portion 14 and the thin-walled connecting portion 18. Therefore, the leg portion 14 of the holding cap 10 is pressed against the tip portion of the pin body portion 34 of the pin member 30, and the female screw 26 provided on the leg portion 14 and the male screw 38 provided on the pin body portion 34. Even if the holding cap 10 is not rotated so that the female screw 26 and the male screw 38 are screwed when engaging the holding cap 10, the leg portion 14 of the holding cap 10 is simply changed to the pin body portion 34 of the pin member 30. When the thread portion of the female screw 26 tries to get over the thread portion of the male screw 38, the thin-walled connecting portion 18 of the leg portion 14 is deformed or broken. The inner diameter of the tubular portion of the leg portion 14 is slightly enlarged, so that the female screw 26 and the male screw 38 can be easily and easily attached without damaging the threads of the female screw 26 and the male screw 38. It can be engaged.

Furthermore, since such a thin-walled connecting portion 18 is formed on the base side of the columnar claw portion 16, the holding cap 10 is more than the one in which the slit 20 reaches the base side of the columnar claw portion 16. When the female screw 26 and the male screw 38 are engaged with each other by pushing strongly against the pin member 30, the strength of the tubular portion formed by the columnar claw portion 16 and the thin-walled connecting portion 18 is not broken. It can be secured by the thin-walled connecting portion 18, and also has the effect of effectively increasing the joint strength between the columnar claw portion 16 and the head portion 12.

In addition, since the holding cap 10 is formed of a thin disk-shaped head portion 12 and a columnar leg portion 14, the leg portion 14 is engaged with the pin body portion 34 of the pin member 30. At that time, since the portion protruding from the surface of the heat insulating material is only a thin disk-shaped head 12, it is possible to finish the appearance almost flatly, and the head 12 and the legs 14 are made of resin. Since the whole is integrally formed by the material, the thermal conductivity can be made smaller than that of the metal holding cap, and thus the heat insulating performance of the heat insulating material to be attached can be effectively exhibited. It is.

Although the typical embodiments of the present invention have been described in detail above, they are merely examples, and the present invention is limited by the specific description relating to such embodiments. It should be understood that it is not interpreted as.

For example, in the above-described embodiment, the leg portion 14 of the holding cap 10 is formed of four columnar claw portions 16 and a thin-walled connecting portion 18 for connecting adjacent ones of the columnar claw portions 16. The number of columnar claws 16 forming the leg 14 may be other than four, and the leg 14 may be formed by two, three, or five or more columnar claws 16.

Further, in the exemplary embodiment, as the pin member 30, the head 32 and the pin body 34 are integrally molded with resin, but the head 32 and the pin body 34 are separate bodies. There is no problem even if it is formed of, and it does not matter if one or both of them are formed of various known metal materials.

In addition, although not listed one by one, the present invention can be carried out in a mode in which various changes, modifications, improvements, etc. are added based on the knowledge of those skilled in the art, and such a mode of implementation is as follows. Needless to say, all of them belong to the scope of the present invention as long as they do not deviate from the gist of the present invention.

10 Holding cap 12 Head 14 Legs 16 Columnar claws 18 Thin-walled connecting part 20 Tapered surface 22 Tip part 24 Slit 26 Female screw 30 Pin member 32 Head 34 Pin body 36 Tip side tapered surface 38 Male screw 40 Base side taper Surface 50 Mounting surface 52 Insulation 54 Rip

Claims (10)

The surface of the heat insulating material or sound absorbing material is attached to the tip of a nail-shaped pin member planted on a mounting surface on which a heat insulating material or sound absorbing material is arranged to a predetermined thickness, and is pierced through the pin member. Use it as a holding cap for heat insulating material or sound absorbing material to hold it down.
A resin that is integrally suspended from the resin head that presses the heat insulating material or the sound absorbing material and is engaged with and fixed to the screw portion provided at the tip of the pin member. A plurality of columnar claws provided with a leg made of the same material, and the leg is arranged on the same circumference at predetermined intervals, and adjacent ones of the plurality of columnar claws thereof. A slit-shaped gap is formed between the tip side of the adjacent columnar claw portion, which has a breakable thin-walled connecting portion connected to each other on the base portion side, and the thin-walled connecting portion is not provided. At the same time, a threaded portion that can be screwed into the threaded portion at the tip of the pin member is provided on the circular inner peripheral surface of the cylindrical portion formed by the plurality of columnar claw portions and the thin-walled connecting portion. Further, the tips of the plurality of columnar claws are each formed into a tip shape sharpened toward the tip, and the legs are formed from the tip of the plurality of columnar claws to the heat insulating material or the heat insulating material. When the pin member is inserted into the sound absorbing material and engaged with the tip of the pin member, the tip of the pin member is placed in a cylindrical portion formed by the plurality of columnar claws and the thin-walled connecting portion. The thin-walled connecting portion is fitted while being broken from the tip end side of the tubular portion, and is configured to be engaged with a screw portion formed on the inner peripheral surface of the tubular portion. Insulation or sound absorbing material holding cap. The first aspect of claim 1, wherein the tips of the plurality of columnar claws are gradually narrowed and / or thinned toward the tips to form a sharpened tip shape. Insulation or sound absorbing material holding cap. The thin-walled connecting portion is formed at a length of 30% to 70% of the height of the columnar claw portion, while the slit-shaped gap is formed from the height of the columnar claw portion to the thin-walled connecting portion. The holding cap for a heat insulating material or a sound absorbing material according to claim 1 or 2, wherein the cap is formed in a length obtained by reducing the length. Claims 1 to 3 are characterized in that the inner surface on the tip end side of the plurality of columnar claw portions is a smooth surface in which a screw portion is not provided at a length portion corresponding to the slit-shaped gap. The holding cap of the heat insulating material or the sound absorbing material according to any one of the above items. The leg portion is composed of a cylindrical portion integrally extending from the head portion, and the tubular wall portion of the cylindrical portion is thinned at a plurality of points in the circumferential direction and extends in a predetermined width in the axial direction. The holding cap for a heat insulating material or a sound absorbing material according to any one of claims 1 to 4, wherein the thin-walled connecting portion is formed. It is located on the tip end side of the columnar claw portion among the inclined surfaces on both sides of the thread of the thread portion provided on the inner peripheral surface of the tubular portion formed by the plurality of columnar claw portions and the thin-walled connecting portion. While the tilt angle of the thing located on the base side of the columnar claw portion is larger than the tilt angle of the thing, on both sides of the screw thread of the screw portion provided at the tip end portion of the pin member. The invention is characterized in that the inclination angle of the inclined surface located on the base side of the pin member is larger than the inclination angle of the inclined surface located on the tip end side of the pin member. The holding cap for the heat insulating material or the sound absorbing material according to any one of claims 1 to 5. The outer surfaces of the plurality of columnar claws are respectively inclined inward from the base of the columnar claws toward the tip to form a tapered surface having a gradually smaller diameter on the tip side as a whole. The holding cap for the heat insulating material or the sound absorbing material according to any one of claims 1 to 6, wherein the cap is characterized by the above. The resin holding cap according to any one of claims 1 to 7, and a threaded portion at the tip portion are planted on a mounting surface on which a heat insulating material or a sound absorbing material is arranged in a predetermined thickness. A fixing tool for a heat insulating material or a sound absorbing material, which is composed of a formed nail-shaped pin member. The pin member is composed of a head fixed to the mounting surface and a pin body portion having a predetermined length, which is integrally suspended from the head and has a screw portion formed at the tip portion. The fixing tool for a heat insulating material or a sound absorbing material according to claim 8, wherein the fixture is made of a heat insulating material or a sound absorbing material. The fixing tool for a heat insulating material or a sound absorbing material according to claim 9, wherein the pin member is made of a resin molded product in which the head and the pin main body are integrally formed.

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