JPH0857958A - Fusion bonded surface structure - Google Patents

Abstract

PURPOSE: To obtain the structure of a fusion bonded surface which can melt adhesive only by frictional heat without necessity of preheating a mounting board. CONSTITUTION: When the top face of the frame 16 of a fastener 10 is pressed in contact with the surface of a wood plate 24 and rotated at a high speed, frictional heat is generated at the contact surfaces of the frame 16 with the plate 24, and the frame 16 is melted. This heat is also transferred to hot-melt agent 18, which is gradually melted. When the agent 18 is melted, the rotation is stopped. Then, the agent 18 is cooled to be cured, and the fastener 10 is fusion bonded to the plate 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welded surface structure that generates frictional heat to melt an adhesive and exert an adhesive effect.

[0002]

2. Description of the Related Art As shown in FIG. 6 and FIG.
As a method of adhering the resin-made fastener 32 to 0, the hot-melt agent 18 which is melted by heat is poured so as to rise from the recess 34 formed in the fastener 32, and the exposed surface 18A of the hot-melt agent 18 is There is a method of pressing it against the mounting substrate 30, applying high speed rotation or vibration with a rotating jig 36, melting with frictional heat, and cooling and hardening.

However, when the mounting substrate 30 is a metal plate, since the hot melt agent 18 is soft, frictional heat is unlikely to be generated. For this reason, although the welding work has been carried out with the metal plate preheated so that the hot-melting agent 18 is easily melted, it takes time to preheat the metal plate, and the working time cannot be shortened. Further, in the case of a material that is difficult to preheat, such as gypsum board or wood, the conventional welding method cannot be used.

[0004]

SUMMARY OF THE INVENTION In consideration of the above facts, an object of the present invention is to provide a welding surface structure capable of melting an adhesive only by frictional heat without the need to preheat the mounting substrate. .

[0005]

A welded surface structure according to claim 1 is a welded surface structure of a member to be attached, which is welded to an attachment substrate via an adhesive that is melted by heat, When the mounting substrate is in surface contact, the adhesive applied to the mounted member is in a non-contact state with the mounting substrate, or is in the same surface as the welding surface of the mounted member.

According to a second aspect of the present invention, there is provided a welded surface structure of a member to be attached which is welded to an attachment substrate via an adhesive which is melted by heat. Provided in this recess is a deviation preventing means for suppressing the displacement of the adhesive so as not to project from the top surface of the recess, so that the exposed surface of the adhesive does not project from the top surface of the recess. It is characterized by being filled with adhesive.

According to a third aspect of the welding surface structure of the present invention, the welding surface of the member to be attached is formed of a thermoplastic resin material.

[0008]

In the welded surface structure according to the present invention, friction heat is generated between the mounting substrate and the member to be mounted, and the member to be mounted is welded to the mounting substrate via the adhesive that melts by the friction heat. It

An adhesive is applied to the welded surface of the attached member. The adhesive is applied so that when the member to be mounted and the mounting substrate are in surface contact with each other, the adhesive is not in contact with the mounting substrate or is in contact with the welding surface of the member to be mounted.

That is, when the mounting substrate and the mounted member are rubbed, frictional heat is first generated in the mounted member, and the frictional heat melts the adhesive applied to the mounted member. That is, the adhesive does not directly melt due to the frictional heat between the mounting substrate and the adhesive, but mainly due to the frictional heat of the mounted member.

For this reason, even if the mounting board is a metal plate and the frictional heat with the adhesive cannot be expected so much, the preheating is not necessary. In other words, the preheating is not necessary. It can also be applied to things like boards and wood.

In the welded surface structure according to the second aspect of the present invention, the recess is formed in the welded surface of the member to be mounted, and the recess is filled with the adhesive. In this recess,
Since the anti-slip means is provided, the adhesive does not slip out of the recess due to vibration or the like.

In the welded surface structure according to the third aspect, the welded surface of the mounted member is formed of a thermoplastic resin material. Therefore, not only the adhesive agent but also the welding surface is melted, so that the adhesive force is increased. Also, by adjusting the shape and depth of the welding surface to adjust the gap where the adhesive is not in contact with the mounting substrate,
It is also possible that the welding surface is gradually melted by frictional heat, and when the frictional heat melts the adhesive, the welding surface comes into contact with the mounting substrate. As a result, it is possible to prevent the adhesive from protruding from the welding surface of the mounting substrate. Further, when the adhesive touches the mounting substrate, the adhesive can be melted by frictional heat on the side of the mounting substrate.

[0014]

1 and 2 show a fastener 10 having a welded surface structure according to this embodiment. This fastener 10
Is provided with a rectangular base plate 12 and a columnar post 14 standing upright from the surface of the base plate 12.

The outer periphery of the base plate 12 is surrounded by a frame body 16. The frame 16 projects toward the side opposite to the support 14, and forms a recess 20 to which the hot melt agent 18 is applied together with the base plate 12. The hot melt agent 18 is applied such that the surface thereof does not protrude from the top surface of the frame 16 or is flush with the top surface of the frame 16.

Further, projections 22 are provided in a staggered manner on the base plate 12, and the upper ends of the projections 22 are formed on the frame body 1.
It is lower than the top surface of No. 6. The protrusions 22 prevent the hot melt agent 18 from being displaced.

Next, a procedure for welding the fastener 10 to the wooden board 24 will be described. First, the fastener 10 is held by the rotating jig 36, and the top surface of the frame body 16 is pressed against the surface of the wooden board 24. Here, when the fastener 10 is rotated at a high speed, friction heat is generated on the contact surface between the frame body 16 and the wooden board 24, and the frame body 16 is melted. This frictional heat is also conducted to the hot melt agent 18,
The hot melt agent 18 is gradually melted.

At this time, when the frame body 16 is melted by frictional heat and becomes flush with the exposed surface 18A of the hot melt agent 18, the height of the frame body 16 is set so that the hot melt agent 18 is completely melted. By experimentally adjusting, it is possible to prevent the hot melt agent 18 from protruding from the welding surface. Further, during the high speed rotation, the hot melt agent 18 is held by the projections 22 and therefore does not shift.

Next, when the rotation is stopped when the hot melt agent 18 is melted, the hot melt agent 18 is cooled and hardened, and the fastener 10 is welded to the wooden board 24 (see FIG. 3).

In this embodiment, the fastener 1 is attached to the wooden board 24.
Although the example in which 0 is welded has been described, it is not necessary to preheat the mounting substrate, and therefore not only the wooden board 24 but also a plate material such as gypsum board or glass may be used.

Further, in the above embodiment, the frictional heat is generated by rotating at high speed, but the frictional heat may be generated by applying vibration.

Further, like the fastener 40 shown in FIG.
Instead of the protrusions 22, the recesses 20 may be partitioned by the grid 42 to prevent the hot melt agent 18 from being displaced. Also, like the fastener 44 shown in FIG. 5, a circular frame 46
By forming a small frame 48 for preventing the hot melt agent from slipping off at the same height as the frame body 46, the contact surface with the mounting substrate is provided in the central portion of the fastener 40. The hot melt agent in the frame 46 can be melted uniformly.

If the hot melt agent 18 can be brought into a non-contact state with the mounting substrate while the welding surface is in contact with the mounting substrate, the frame body does not need to be a complete frame, and a cutout is provided in a part thereof. It may be a frame. Even if the welding surface itself is a material that is not melted by frictional heat, the hot melt agent 18 is melted by frictional heat, so there is no problem.

[0024]

Since the present invention has the above-described structure, it is not necessary to preheat the mounting substrate, and the adhesive can be reliably melted only by frictional heat. Further, it is possible to prevent the adhesive from protruding from the welded portion.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a fastener to which a welding surface structure according to the present embodiment is applied.

FIG. 2 is a cross-sectional view showing a state in which a fastener to which a welding surface structure according to the present embodiment is applied is attached to a mounting substrate.

FIG. 3 is a cross-sectional view showing a state in which a fastener to which a welding surface structure according to the present embodiment is applied is adhered to a mounting substrate.

FIG. 4 is an overall perspective view of another fastener to which the welding surface structure according to the present embodiment is applied.

FIG. 5 is an overall perspective view of another fastener to which the welding surface structure according to the present embodiment is applied.

FIG. 6 is an overall perspective view of a fastener to which a conventional welded surface structure is applied.

FIG. 7 is a cross-sectional view showing a state in which a fastener to which a conventional welded surface structure is applied is adhered to a mounting substrate.

[Explanation of symbols]

 16 Frame 18 Hot Melt Agent (Adhesive) 20 Recess 22 Protrusion (Displacement Prevention Means)

Claims (3)

[Claims] 1. In a welded surface structure of a member to be attached, which is welded to a mounting substrate via an adhesive that melts by heat, when the member to be attached and the mounting substrate are in face contact, the member to be attached is applied. A welded surface structure, wherein the adhesive is in non-contact with the mounting substrate or in contact with the welded surface of the member to be mounted. 2. In a welded surface structure of a member to be attached, which is welded to a mounting substrate via an adhesive that melts by heat, a recess is formed in the welded surface of the member to be attached, and the top of the recess is formed in the recess. A gap preventing means for suppressing the displacement of the adhesive so as not to protrude from the top surface of the concave portion, and filling the concave portion with the adhesive so that the exposed surface of the adhesive does not protrude from the top surface of the concave portion. Welded surface structure. 3. The welded surface structure according to claim 1, wherein the welded surface of the attached member is formed of a thermoplastic resin material.