JPH0435153Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a joining member that joins members using a multi-component reactive hardening adhesive.

(Prior art and its problems) Conventionally, multiple members have been bonded together using an adhesive to form an integral part, but in recent years, in response to demands for increased bonding strength and bonding speed, A liquid reaction curable adhesive is used.

There are various types of multi-component reactive curing adhesives, such as epoxy and urethane adhesives, but they generally cure and bond by mixing a curing agent with the main ingredient, and the curing time depends on the mixing ratio of the two. It is.

The time required for bonding using such an adhesive is limited by the curing time of the adhesive.
That is, the work must be completed within the time it takes for the adhesive applied to the bonded area to harden.

For example, a structure as shown in FIG. 8, that is, a frame structure in which a frame 1 made of a metal pipe is enclosed by an outer panel 2 and an inner panel 3 made of resin, is used. When the panel members (outer panel 2 and inner panel 3)
If it is large or has a complicated shape, there will be many adhesive-applied parts scattered about. In this case, if the adhesive is applied to the bonding surface as in the past, there will be a large time difference between the beginning and end of the adhesive application process, so the ratio of the main component and curing agent of the multi-component reaction-curing adhesive will be The curing speed had to be slowed down by adjusting the amount. Moreover, since the curing speed of the adhesive is slow, it is necessary to clamp the joined members together in a vise until the adhesive hardens, or to use rivets or fasteners that elastically deform and fit together to hold the two together. The joints were then joined together.

For this reason, there was a problem that the joining process took a long time and the assembly work efficiency was poor.

In addition, there is a conventional method in which two types of adhesive stock solutions are mixed in the panel material to be bonded, as disclosed in, for example, Japanese Utility Model Application Publication No. 59-68916, etc. It is not suitable for joining panel members.

(Purpose of the invention) In view of the above-mentioned circumstances, an object of the present invention is to provide a joining member for a multi-component reactive hardening adhesive that can simplify the joining process and improve work efficiency.

(Structure of the invention) Therefore, the joining member for a multi-component reactive hardening adhesive according to the invention has an internal solution mixing chamber in which at least two types of adhesive stock solutions are mixed and reacted, and also has a stock solution mixing chamber in which at least two types of adhesive stock solutions are mixed and reacted. each stock solution supply passage including a positioning part and supplying each adhesive stock solution to the mixing chamber;
An adhesive supply passage is formed to supply the adhesive mixed in the mixing chamber to the adhesive surface of the adhered member.

With the above configuration, on the adhesive surface between the adhered member and the joining member, or on the adhesive surface between the plurality of adhered members assembled in advance by the joining member,
Adhesive can be supplied via the joining member. Therefore,
There is no need to slow down the curing speed of the adhesive, the working time of the bonding process can be shortened and simplified, and working efficiency can be improved.

(Embodiment of the invention) Hereinafter, an embodiment of the invention will be described based on the drawings.

In Figs. 1 to 3 showing the first embodiment, a fastener 10 as a joining member in this embodiment is used, for example, when passing through joining portions A and B of an outer panel 2 and an inner panel 3 in Fig. 8 as shown in Fig. 1 to clamp both panels 2 and 3.

The fastener 10 is made of synthetic resin or the like having a predetermined elasticity, and has a large diameter head portion 10b and a small diameter shaft portion 10c.
and a mushroom-shaped tip portion 10 with a larger diameter than the shaft portion 10c.
It is configured by forming a.

The shaft portion 10c is inserted into the through holes 2a and 3 of the panels 2 and 3.
a, and its length (i.e., the distance from the head 10b to the tip 10a)
has substantially the same thickness as the combined thickness of both panels 2 and 3, and is configured to sandwich both panels 2 and 3 between the tip portion 10a and the head portion 10b when the panels 2 and 3 are penetrated. That is, the shaft portion 10c and the tip portion 10
The space between a and the head 10b constitutes a positioning section.

A stock solution mixing chamber 11 is formed inside the shaft portion 10c that fits into the through holes 2a, 3a of the panels 2, 3, in which the stock solution of the adhesive is mixed and reacted.

Further, a main agent supply passage 12 and a curing agent supply passage 13 for supplying a main agent and a curing agent, which are adhesive stock solutions, to the mixing chamber 11, respectively, are opened in the head 10b.

Furthermore, an adhesive supply passage 14 is formed from the mixing chamber 11 toward the outer periphery of the shaft portion 10c and communicates with an adhesive reservoir 15 formed on the joint surfaces of both panels 2 and 3. The arrangement is such that the mixed adhesive is supplied to an adhesive reservoir 15 via the passageway 14 .

Note that a hole 10d is bored in the tip end 10a to make it easier to deform when the fastener 10 is attached. Further, in the figure, reference numerals 16 and 17 indicate injection nozzles for injecting the main agent and curing agent of the adhesive, respectively.

Next, a panel joining process using the above fastener 10 will be explained.

First, the outer panel 2 and the inner panel 3, which are members to be adhered, are assembled in predetermined positions, and the through holes 2 and 3 of both are assembled.
Match a and 3a, and insert the fastener 10 here.

The fastener 10 fits into the through holes 2a and 3a by deforming the tip 10a, and the shaft 10
b is fitted. As a result, the outer panel 2 and the inner panel 3 are temporarily fixed by the fasteners 10.

Thereafter, the main agent and curing agent are press-fitted from the respective injection nozzles 16 and 17, respectively. The press-fitted base agent and curing agent are separately supplied into the mixing chamber 11 through respective supply passages 12 and 13, and mixed within the mixing chamber 11. The mixed adhesive is extruded through the adhesive supply passage 16 into the adhesive reservoir 15 on the panel joint surface, where it hardens to adhere the outer panel 2 and the inner panel 3.

With the above configuration, the adhesive is applied after both panels 2 and 3 are fixed (temporarily fixed) with the fastener 10, making the joining work easier and eliminating the need to slow down the curing speed of the adhesive. , therefore,
The work of the joining process becomes easier, the work time can be greatly shortened, and work efficiency can be improved.

Next, a second embodiment will be described with reference to FIGS. 4 and 5.

The fastener 20 of this embodiment is applied when long holes 2a and 3a are provided in each panel 2 and 3 orthogonal to each other in order to absorb manufacturing errors between the outer panel 2 and the inner panel 3.

The structure of the fastener 20 includes a head 2b and a shaft 20.
c, consists of a tip 20a, with a stock solution mixing chamber 2 inside.
1. It is the same as that of the first embodiment in that it has a main agent supply passage 22, a curing agent supply passage 23, and an adhesive supply passage 24. However, the adhesive supply passage 24
are vertically shifted so as to open into the respective elongated holes 2a and 3a which also serve as adhesive reservoirs.

Further, a mixing chamber 2 is provided at the tip 20a of the fastener 20.
1 through a communication path 25.
is provided. Furthermore, an air vent hole 27 is provided in the head 20b so as to communicate with the long hole 2a of the outer panel 2.
is provided.

A washer 26 is provided between the tip 20a and the inner panel 3 to close the long hole 3a and prevent adhesive from leaking. In this case, similarly to the first embodiment, the shaft portion 20c, the head portion 20b, and the tip portion 20a
The space between the two corresponds to the positioning part.

The panel joining process using the fastener 20 of the second embodiment is the same as that of the first embodiment, and the work efficiency of the joining process can be improved.

In addition, in this embodiment, the cavity 20 in the head 20a
When the adhesive flows into the adhesive d and hardens, the tip portion 20a becomes difficult to deform, and the fastener 20 has the effect of being difficult to come off.

Furthermore, the air vent hole 27 communicating with the long hole 2a of the outer panel 2 provided in the head 20b allows
This also has the effect of making it easier for the adhesive to flow into the long holes 2a and 3a.

Next, a third embodiment will be described with reference to FIGS. 6 and 7.

This embodiment is an example in which the present invention is applied to a spacer interposed between the frame 1 and the outer panel 2 shown in FIG.

The spacer 30 serving as a bonding member has an undiluted solution mixing chamber 31 therein, and a main agent supply passage 32 and a curing agent supply passage 33 communicating with the mixing chamber 31 are provided opening in the side wall.

The joint surface of the spacer 30 with the outer panel 2 is
It has a shape that follows the bent shape of the outer panel 2, and this corresponds to a positioning part. Further, an adhesive reservoir 35 is formed on the joint surface on the outer panel 2 side, and an adhesive supply passage 34 that communicates the adhesive reservoir 35 with the mixing chamber 31 is formed. still,
A convex positioning protrusion 36 that fits into a fitting hole of the frame 1 is formed on the frame 1 side joint surface.

In the joining process using the spacer 31 of this embodiment, the spacer 31 is inserted into the positioning hole opened in the frame 1.
After fitting and joining the positioning protrusion 36,
The outer panel 2 is set on the spacer 31, and the main material and curing agent are injected into the mixing chamber 31 from both the main material and curing agent supply passages 32 and 33 and mixed. The mixed adhesive passes through the adhesive supply passage 34 and is filled into the adhesive reservoir 35, and is applied to the outer panel 2 and the spacer 3.
0.

In this case as well, it is possible to use an adhesive with a fast curing speed, and the work efficiency of the bonding process can be improved.

(Effects of the invention) According to the joining member for a multi-component reaction-curing adhesive according to the invention as described above, it is possible to position the parts to be adhered at the time of adhesion, and the adhesive can be bonded using a fast-curing adhesive. This makes it possible to simplify the bonding work and significantly shorten the bonding process time.

Furthermore, the necessary amount of adhesive is mixed and used on the spot, which prevents wasteful consumption of adhesive.

In other words, work efficiency can be greatly improved, contributing to improved productivity.

[Brief explanation of the drawing]

Fig. 1 is a usage diagram of the first embodiment of the present invention, Fig. 2 is a plan view of the first embodiment, Fig. 3 is a side view, and Fig. 4 is a usage state of the second embodiment of the invention. Fig. 5 is a sectional view taken along the - arrow in Fig. 4, Fig. 6 is an external view of the third embodiment of the present invention, Fig. 7 is a sectional view of the third embodiment of the same, and Fig. 8 is a cross-sectional view of the third embodiment of the present invention. FIG. 3 is a diagram showing an example of a joining structure to which the invention is applied. 2... Outer panel (member to be bonded), 3... Inner panel (member to be bonded), 10, 20... Fastener (joining member), 30... Spacer (joining member), 11, 21, 31... undiluted solution mixture Room, 12,
22, 32...Main agent supply passage, 13, 23, 33
...Curing agent supply passage, 14, 24, 34...Adhesive supply passage.

Claims (1)

[Scope of utility model registration request] The device is for joining members to be adhered, and has an internal solution mixing chamber for mixing and reacting at least two types of adhesive stock solutions, and is also provided with a positioning part for the members to be glued, and each adhesive stock solution is placed in the mixing chamber. A multi-liquid reactive curable product characterized in that it is configured by forming each stock solution supply passage for supplying the undiluted solution and an adhesive supply passage for supplying the adhesive mixed in the mixing chamber to the bonding surface of the bonded member. Bonding material for adhesives.