JP3376495B2 - Method of applying adhesive and bonding jig - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention applies an appropriate amount of adhesive to a joining member so as not to stick out from an adhesive portion when the first joining member and the second joining member are adhered by an adhesive. The present invention relates to a method and a bonding jig used therefor.

[0002]

2. Description of the Related Art When a first joining member and a second joining member are joined with an adhesive, for example, as shown in FIGS. 5A and 5B, an upper cabinet 1 and a lower cabinet 2 made of plastic are used. In the case of forming a battery pack by bonding and, the following two methods are roughly known as a method of supplying the adhesive to the bonded portion.

One is a method of applying an adhesive to the adhesive rib 1a of the upper cabinet 1, which is carried out by putting the adhesive in a container such as a petri dish or a bat and inserting the adhesive rib 1a therein. It In this case, the application amount of the adhesive is controlled by changing the depth of the adhesive in the container or by controlling the descending amount when the adhesive rib 1a is put into the container.

The other is a method of dropping an adhesive into the groove 2a of the lower cabinet 2, in which a needle is inserted into the groove 2a of the lower cabinet 2 and the needle is run along the groove 2a, or a plurality of needles are run. This is done by simultaneously inserting a book needle into the groove 2a and dropping the adhesive.

[0005]

However, in any of the above-mentioned adhesive supply methods, there is a problem in that the adhesive protrudes and the adhesive strength decreases after the upper cabinet 1 and the lower cabinet 2 are adhered to each other. Become.

That is, in the method of applying the adhesive to the adhesive rib 1a of the upper cabinet 1, the adhesive rib 1a of the upper cabinet 1 is used.
The liquid surface of the adhesive fluctuates when it is put in the adhesive in the container and when it is pulled up from the adhesive, and as a result, the adhesive adhered to the adhesive rib 1a becomes wavy and has a constant coating thickness. It does not become. For this reason, when the upper cabinet 1 and the lower cabinet 2 are fitted and bonded to each other, the adhesive is squeezed out. To prevent the adhesive from squeezing out, the depth of the adhesive in the solution is regulated to be shallow or the adhesive rib 1a is formed.
It is conceivable to control the descending amount when putting the adhesive into the container to reduce the amount of adhesive adhered to the adhesive rib 1a to the extent that the adhesive does not overflow. Is not easy. Therefore, when it is possible to eliminate the protrusion of the adhesive, the amount of the adhesive adhered becomes insufficient and the decrease in the adhesive strength becomes a problem.

On the other hand, in the method of dropping the adhesive into the groove portion 2a of the lower cabinet 2, it is easy to control the supply amount of the adhesive as a whole, but the adhesive cannot be uniformly distributed. Therefore, even with this method, there is a problem that the adhesive is squeezed out or the adhesive strength is lowered.

The present invention is intended to solve the problems of the prior art as described above, and when two joining members are joined by an adhesive, the protrusion of the adhesive does not occur after the joining, and it is sufficient. It is an object of the present invention to provide a method of applying an adhesive so that adhesive strength can be obtained, and an adhesive jig that facilitates such a method.

[0009]

Means for Solving the Problems The inventors of the present invention supply the adhesive agent by utilizing a capillary phenomenon by arranging the surfaces of an adhesive jig on a portion of the joining member to be coated with the adhesive agent with a minute gap therebetween. It was found that it is effective to complete the present invention.

That is, according to the present invention, in a method of applying an adhesive to a joining member with an adhesive jig, a portion of the joining member to which the adhesive is applied and an adhesive supply surface of the adhesive jig are provided with a minute gap. It is characterized in that the adhesive is supplied to the minute gap between the joining member and the adhesive supply surface by capillary action, and then the adhesive is attached to the joining member by separating the joining member from the adhesive supply surface. A method of applying an adhesive is provided.

Further, as an adhesive jig for facilitating such a method, an adhesive supply surface facing the portion of the joining member to which the adhesive is to be applied with a minute gap, and the adhesive is collected. Provided is an adhesive jig having an adhesive reservoir to be placed and an adhesive supply path for supplying the adhesive from the adhesive reservoir to one end of an adhesive supply surface by a capillary phenomenon.

[0012]

According to the adhesive application method of the present invention, the adhesive bridges the minute gap between the joining member and the adhesive supply surface by the capillary phenomenon. As a result, the adhesive adheres to the joining member with a uniform thickness only on the portion where the adhesive supply surface is opposed,
Supplied. In this case, the application position can be controlled easily and precisely by changing the position of the adhesive supply surface facing the joining member, and no special means for controlling the application amount is required. Therefore, it becomes possible to easily and accurately apply the adhesive to the position where the adhesive should be applied with a constant application thickness, and the adhesive does not overflow after the adhesion and sufficient adhesive strength can be obtained.

Further, according to the bonding jig of the present invention, the adhesive supply surface as described above, the adhesive reservoir for accumulating the adhesive, and the adhesive from the adhesive reservoir to one end of the adhesive supply surface by the capillary phenomenon. Since it has an adhesive supply path for supplying
It is possible to preferably carry out the method of applying the adhesive of the present invention. That is, when the adhesive is put in the adhesive reservoir and the joining member is placed opposite to the adhesive supply surface, the adhesive in the adhesive reservoir reaches one end of the adhesive supply surface through the adhesive supply path by the capillary phenomenon. Furthermore, due to the capillary phenomenon, a minute gap between the joining member and the adhesive supply surface is reached to reach the other end of the adhesive supply surface, so that the adhesive is applied to the joining member facing the adhesive supply surface. Become.

In particular, when the abutting member for holding the joining member at a predetermined position is provided on the bonding jig, that is, the portions of the joining member to which the adhesive is applied are opposed to the adhesive supply surface with a minute gap. When the abutting member for holding the joining member is provided as described above, the adhesive can be applied to the predetermined position extremely easily only by placing the joining member on the bonding jig. In addition, the end of the member forming the adhesive supply surface (the end opposite to the side where the adhesive is supplied from the adhesive reservoir) is acutely angled with respect to the surface of the bonding member to which the adhesive is applied. When formed, it is possible to prevent the adhesive from reaching an unnecessary position beyond a predetermined adhesive application position when filling the minute gap between the joining member and the adhesive supply surface, so that the adhesive application position can be accurately adjusted. It becomes possible to specify.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be specifically described below with reference to the drawings. In each drawing, the same reference numerals represent the same or equivalent constituent elements.

FIG. 3 is a sectional view of an embodiment of the bonding jig 3 of the present invention. The adhesive jig 3 is a jig for applying an adhesive to the adhesive rib 1a of the upper cabinet 1 in order to adhere the upper cabinet 1 and the lower cabinet 2 of the battery pack shown in FIG. 4 is a top view of this adhesive jig, and FIG. 1 is an enlarged view of the adhesive rib 1a and its vicinity when the upper cabinet 1 is placed on the adhesive jig 3 and the adhesive is applied to the adhesive rib 1a. Is.

As shown in FIG. 3, this bonding jig 3 is
Adhesive supply surface 4, adhesive reservoir 6 for storing adhesive 5,
An adhesive supply path 7 for supplying an adhesive from the adhesive reservoir 6 to one end of the adhesive supply surface 4 is provided.

In this case, the adhesive supply surface 4 is shown in FIG.
As shown in FIG. 5, it is composed of an adhesive supply surface 4o composed of the outer block 3o of the bonding jig and an adhesive supply surface 4i composed of the inner block 3i. As shown in FIG. 2B, the adhesive supply surface 4 and the surface of the adhesive rib 1a to which the adhesive is applied when the upper cabinet 1 is placed on the adhesive jig 3 and the minute gap w1, That is, the gap (for example, 0.1 mm) at which the adhesive 5 creeps up due to the capillary phenomenon.
It is provided to make a degree). In addition, the adhesive supply surface 4o and the adhesive supply surface 4i are circumferentially corresponding to the adhesive ribs 1a provided on the entire circumference of the upper cabinet 1 being provided on the entire circumference of the end portion of the upper cabinet 1. Further, these adhesive supply surfaces 4o, 4i are opened upward so that the upper cabinet 1 can be easily placed horizontally on the bonding jig 3, and their ends are They are provided so as to be on the same plane. The angle θo at the end 4oa of the outer block 3o forming the adhesive supply surface 4o and the end 4i of the inner block 3i forming the adhesive supply surface 4i.
The angle θi at a is formed at an acute angle with respect to the surface of the adhesive rib 1a to which the adhesive is applied. As a result, as shown in FIG. 2, it is possible to prevent the adhesive 5 from creeping above the end portions 4oa or the end portions 4ia and above the adhesive ribs 1a, and thus applying the adhesive agent to the adhesive ribs 1a. Position the adhesive supply surface 4 against the adhesive rib 1a
It is possible to accurately limit only to the portions that are opposed to each other at a minute interval.

The adhesive supply path 7 has a narrow width w2 such that the adhesive 5 creeps from the adhesive reservoir 6 to the one end 4b of the adhesive supply surface 4 due to the capillary phenomenon.

In the adhesive reservoir 6 shown in FIG. 3, the liquid level when the adhesive 5 is put therein is the end 4o of the adhesive supply surface 4.
It should be lower than a. This makes the upper cabinet 1
3 is placed on the bonding jig 3 as shown in FIG. 3, the height of the adhesive 5 crawling up in the minute gap between the bonding rib 1a and the adhesive supply surface 4 is set to the adhesive pool 6 It can be made constant regardless of the height of the liquid surface of the agent 5.

Further, a float 8 is provided in the adhesive reservoir 6, and the float 8 is further connected to a detector for detecting the liquid level of the adhesive 5 in the adhesive reservoir 6 and an adhesive supply tank. (Not shown), so that the adhesive 5 in the adhesive reservoir 6 is managed so as not to be lost. As described above, the height of the adhesive 5 crawling up in the minute gap between the adhesive rib 1a and the adhesive supply surface 4 does not depend on the height of the liquid surface of the adhesive 5 in the adhesive reservoir 6. , In this case, the adhesive is managed by the adhesive 5 in the adhesive reservoir 6.
It is not necessary to strictly manage the liquid level of No. 1 to be constant, and it is sufficient to manage the adhesive 5 in the adhesive reservoir 6 so as not to run out. Further, when the float 8 is formed so as to widely cover the upper surface of the adhesive agent reservoir 6 as shown in FIG. 3, the float 8 has the liquid amount of the adhesive agent 5 in the adhesive agent reservoir 6 as described above. In addition to the management, it also functions to prevent evaporation of the adhesive 5 in the adhesive reservoir 6, which is preferable.

In the bonding jig 3 of this embodiment, when the upper cabinet 1 is placed on the bonding jig 3, the portion of the bonding rib 1a to which the adhesive is applied has a minute gap from the adhesive supply surface 3. The abutting member 9 for holding the upper cabinet 1 so as to be placed facing each other.
have. That is, when the upper cabinet 1 hits the contact member 9, as shown in FIG. 1B, the lower ends of the adhesive ribs 1a do not contact the inner block 3i, but the adhesive 5 that has crawled up. Adjusts the installation position of the abutting member 9 so as to make contact. As a result, the adhesive can be applied to the correct position by merely placing the upper cabinet 1 on the bonding jig 3.

Further, the pressure adjusting hole 10 is formed in the bonding jig 3.
Is provided. As a result, the inside of the upper cabinet 1 is not sealed even in the bonding jig 3, so that the pressure inside and outside can be kept constant.

The adhesive 5 used for the bonding jig 3
As for the liquid adhesive, a liquid adhesive having a viscosity of such a degree that the minute gap of the adhesive supply path 7 and the minute gap between the adhesive rib 1a and the adhesive supply surface 4 are filled by the capillary phenomenon is used. Further, the constituent material of the bonding jig 3 is not particularly limited as long as it is not affected by the adhesive 5, but for example, aluminum or SU.
S or the like can be used.

As a method of using the adhesive jig 3 as described above, first, the adhesive 5 is put into the adhesive reservoir 6. Then, as shown in FIG. 1A, the adhesive 5 reaches the one end 4 b of the adhesive supply surface 4 through the adhesive supply path 7.
Therefore, when the upper cabinet 1 is placed on the bonding jig 3 so as to hit the abutting member 9, the bonding rib 1a is spaced from the adhesive supply surface 4 by a minute gap w1 as shown in FIG. The adhesive 5 creeps up through the gap due to the capillary phenomenon and reaches the other end of the adhesive supply surface 4. Then, when the upper cabinet 1 is lifted and the adhesive rib 1a is separated from the adhesive supply surface 4, the adhesive 5 is attached to a predetermined position of the adhesive rib 1a as shown in FIG. As shown in (d), the lower cabinet 2 is fitted. This allows the adhesive 5
Since it spreads over the entire adhesive surface, sufficient adhesive strength can be obtained. In addition, when the upper cabinet 1 and the lower cabinet 2 are fitted together, as shown in FIG.
1 is preferably formed. This makes it possible to completely prevent the adhesive from overflowing the outer surface of the battery pack.

[0026]

According to the adhesive application method of the present invention,
When the joining member is joined with the adhesive, it is possible to apply the adhesive to the joining member so that the adhesive does not overflow after the joining and a sufficient adhesive strength is obtained. Further, according to the bonding jig of the present invention, this method can be easily implemented.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a method of applying an adhesive according to an embodiment.

FIG. 2 is an explanatory diagram of a method of applying an adhesive according to an example.

FIG. 3 is a cross-sectional view of a bonding jig of an example.

FIG. 4 is a top view of the bonding jig of the example.

FIG. 5 is a perspective view (a) of the battery pack and a cross-sectional view (b) in the vicinity of an adhesive portion thereof.

[Explanation of symbols]

1 upper cabinet 1a Adhesive rib 2 Lower cabinet 3 Adhesive jig 3i inner block 3o outer block 4, 4i, 4o Adhesive supply surface 5 adhesive 6 adhesive pool 7 Adhesive supply path 8 floats 9 Contact member 10 Pressure adjustment hole 11 resin pool

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-2-89621 (JP, A) JP-A-3-114562 (JP, A) JP-A-6-21660 (JP, A) JP-B 57- 12257 (JP, B2) JP 61-35933 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) B29C 65/00-65/82 B05C 1/00-3/20 B05C 7/00-21/00 B05D 1/00-7/26 C09J 5/00-5/10

Claims (5)

(57) [Claims] 1. A method of applying an adhesive agent to a joining member with an adhesive jig, wherein a portion of the joining member to be applied with the adhesive agent and an adhesive agent supply surface of the adhesive jig are opposed to each other with a minute gap therebetween. Application of an adhesive characterized in that the adhesive is supplied to the minute gap between the joining member and the adhesive supply surface by capillary action, and then the adhesive is attached to the joining member by separating the joining member from the adhesive supply surface. Method. 2. An adhesive supply surface of an adhesive jig is formed into a shape which is fitted to a portion of the joining member to be coated with the adhesive with a minute gap and is opened upward, and the joining member is formed by the adhesive. The arrangement is such that the supply surface is inserted downward from above.
The method for applying the adhesive described. 3. An adhesive supply surface opposed to a portion of the joining member to be applied with an adhesive at a minute interval, an adhesive reservoir for accumulating the adhesive, and a capillary tube from the adhesive reservoir to one end of the adhesive supply surface. An adhesive jig having an adhesive supply path for supplying an adhesive according to a phenomenon. 4. The bonding jig according to claim 3, further comprising an abutting member that holds the bonding member such that a portion of the bonding member to which the adhesive is applied is opposed to the adhesive supply surface with a minute gap. 5. The member forming the adhesive supply surface is formed at an acute angle with respect to the surface of the joining member to which the adhesive is applied, at the end opposite to the side where the adhesive is supplied from the adhesive reservoir. The bonding jig according to claim 3 or 4, which is provided.