JPH0545327U - Seal structure - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a seal structure in which a sealant is filled in a joint for joining members to perform sealing, and an appropriate amount of the sealant filled in the joint can be retained. [Structure] A groove portion 3a-2 which engages with a convex portion 3b-1 of a cover 3b is formed on a peripheral edge portion 3a-1 of a case portion 3a, and a groove width of a part of the groove portion 3a-2 is made larger than that of another portion to form a sealing agent reservoir portion. 3a-3,
The sealing agent reservoir 3a-3 is used as the starting and ending positions for filling the sealing agent 5, and the sealing agent 5 is filled so as to overlap the sealing agent reservoir 3a-3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seal structure, and more particularly to a seal structure that seals members by filling a sealing agent in an engaging portion that joins members.

[0002]

[Prior Art]

 Some corner poles that can be mounted on automobiles are configured to be expandable and contractible by a drive unit.

Such a drive unit is housed in a case hermetically sealed so that water, dust and the like do not adhere to it.

FIG. 5 shows a perspective view of an example of a conventional case. The case is composed of a case body 1a and a cover 1b, and a groove portion 1a-1 is formed in the case portion 1a at a joint portion with the cover 1b. Further, a convex portion 1b-1 that engages with the groove portion 1a-1 of the case portion 1a is formed at the joint portion of the cover 1b with the case portion 1a.

When the case portion 1a and the cover 1b are joined, the groove portion 1a-1 of the case portion 1a is filled with the sealant 2 by an automatic filling machine or the like, and the groove portion 1a-1 is provided with a convex portion of the cover 1b. Part 1 b-1 was engaged. Conventionally, the groove portion 1a-1 of the case portion 1a and the convex portion 1b-1 of the cover 1b are shaped to fit with each other.

[0006]

[Problems to be solved by the device]

 However, in the conventional seal structure, the groove portion 1a-1 of the case portion 1a and the convex portion 1b-1 of the cover 1b are configured to correspond to each other. For this reason, when filling the groove 1a-1 with the sealing agent 2, it was necessary to completely match the starting portion and the ending portion of the filling of the sealing agent 2.

For example, when the start portion and the end portion of the sealant 2 overlap, the sealant 2 increases in the overlapped portion as shown in FIG. 6, so that the groove portion 1a- of the case portion 1a- When the 1 and the convex portion 1b-1 of the cover 1b are joined, the sealing agent 2 overflows from the groove portion 1a-1 and adheres to the inner and outer surfaces of the case 1, and the sealing agent 2 adheres to the internal mechanism, causing a malfunction in the mechanism. There were problems such as the occurrence of dust and the contamination of Case 1.

On the contrary, when there is a gap between the start portion and the end portion of the sealant 2, as shown in FIG. 7, the amount of the sealant 2 is small in the gap, so that the groove 1a-1 There is a problem in that the joint between the case portion 1a and the cover 1b becomes defective because the convex portion 1b-1 and the convex portion 1b-1 are not sufficiently sealed and foreign substances are easily introduced.

Further, in order to solve such a problem, it is necessary to finely control the filling amount of the sealing agent 2 by an automatic sealing agent filling machine and to remove the overflowing sealing agent. There was a problem such as becoming.

The present invention has been made in view of the above points, and an object of the present invention is to provide a seal structure capable of holding an appropriate amount of the sealing agent with which the joint portion is filled.

[0011]

[Means for Solving the Problems]

 According to the present invention, in a seal structure in which an engaging portion formed on a mating surface between members is filled with a sealing agent to form a seal, a sealing agent storing portion for storing the sealing agent is formed in a part of the engaging portion.

[0012]

[Action]

 When the sealant is filled into the engaging part, the sealant reservoir is located at the start and end positions of the sealant, so that the sealant overlaps at the start and end of filling, and even if the amount increases a little It will not flow into the sealant reservoir and out of the engaging part.

[0013]

【Example】

 FIG. 1 shows a perspective view of an embodiment of the present invention. In the figure, 3 indicates a case, and the case 1 is composed of a case portion 3a and a cover 3b.

A case pole expansion / contraction mechanism and the like (not shown) are housed in the case 3.

A groove portion 3a-2 is formed in the storage port 4 for storing the expansion / contraction mechanism of the case portion 3a and the peripheral edge portion 3a-1. The groove 3a-2 is continuous over the entire circumference, and a sealant reservoir 3a-3 is formed in a part thereof.

The sealing agent reservoir 3a-3 is formed by bulging a part of the groove 3a-2 toward the storage port 4.

A convex portion 3b-1 is integrally formed on the cover 3b so as to engage with the groove portion 3a-2 of the case portion 3a.

When the cover 3b is attached to the case 3a, the sealant 5 is filled in the groove 3a-2 of the case 3a by an automatic sealant filling machine as shown in FIG.

At the time of filling, the sealing agent 5 made of synthetic rubber, urethane resin, special polymer or the like is started from the sealing agent storage portion 3a-3, the groove portion 3a-2 is rotated once, and the sealing agent storage portion 3a-3 is again provided. After being filled up, the sealant 5 is slightly overlapped at the sealant reservoir 3a-3 as shown in FIG.

After filling the groove portion 3a-2 with the sealing agent 5, the cover 3b is placed on the case portion 3a, and the convex portion 3b-1 is engaged with the groove portion 3a-2.

When the convex portion 3b-1 is engaged with the groove portion 3a-2, the sealant 5 in the groove portion 3a-2 enters the slight gap between the groove portion 3a-2 and the convex portion 3b-1, and the case portion 3a. And the cover 3b are joined.

At this time, there is an overlap between the start portion and the end portion of the filling of the sealing agent 5 and the amount of the sealing agent 5 is large, but this portion coincides with the sealing agent reservoir 3a-3. Therefore, as shown in FIG. 4, the excess sealant 5 does not flow into the sealant reservoir 3a-3 and flow out between the case 3a and the cover 3b to the outside of the groove 3a-2. ..

In this embodiment, the sealing agent reservoir 3a-3 is formed by making the groove width of the groove 3a-2 larger than that of the other portions. However, the present invention is not limited to this. For example, the groove 3a- The groove of 2 may be deeper than other portions to form a sealant reservoir.

[0024]

[Effect of the device]

 As described above, according to the present invention, by providing the sealing agent reservoir portion in a part of the engaging portion, even if the sealing agent is superposed at the sealing agent filling start portion and the sealing agent filling portion, it is provided outside the engaging portion. The sealant does not flow out and the sealant can be reliably filled between the members.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a sectional view of an essential part of an embodiment of the present invention.

FIG. 3 is a sectional view of an essential part of an embodiment of the present invention.

FIG. 4 is a sectional view of an essential part of an embodiment of the present invention.

FIG. 5 is a perspective view of a conventional example.

FIG. 6 is a diagram for explaining a problem of a conventional example.

FIG. 7 is a diagram for explaining a problem of a conventional example.

[Explanation of symbols]

 3 Case 3a Case part 3a-1 Edge part 3a-2 Groove part 3a-3 Sealing agent reservoir part 3b Cover 3b-1 Convex part 4 Storage port 5 Sealing agent

Claims (1)

[Scope of utility model registration request] 1. A seal structure for sealing between the members by filling a sealing agent into the engaging parts formed on the mating surfaces between the members, wherein a part of the engaging parts formed between the members is provided. A sealing structure formed by forming a sealing agent reservoir for storing the sealing agent.