JP2012122518A - Gasket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the positioning of a gasket 1 when gasket attachment grooves are not formed on two surfaces, in the gasket 1 which is sandwiched between the opposing two surfaces and keeps air tightness.SOLUTION: The gasket 1 sandwiched between the opposing two surfaces of two members which are assembled to each other has a flange 15 which regulates the displacement of the gasket 1 in a plane direction (X-direction and Y-direction) by closely contacting with the side surface erecting from one of the two surfaces. By this arrangement, when assembling the two members via the gasket 1, the gasket 1 can be positioned by regulating the displacement of the gasket in the plane direction by fitting the flange 15 into the side surface erecting from one of the two surfaces and making the flange closely contact with the side surface.

Description

  The present invention relates to a gasket that is sandwiched between two opposing surfaces, such as between a housing and a lid of a device, and maintains airtightness.

  Conventionally, it is used for a gasket that is sandwiched between two opposing surfaces, such as between a housing and a lid, to maintain the airtightness of the device, in particular, in which no gasket mounting groove is formed on the two surfaces. As the gasket to be used, the one shown in FIG. 4 or 5 is known.

  4 and 5, reference numeral 101 is a casing of the case 100, 102 is a lid, and the gasket 103 is sandwiched between opposing end surfaces of the side wall of the casing 101 and the side wall of the lid 102. It keeps the airtightness. The case 100 is, for example, a battery case, an inverter case, a fuel cell stack storage case, etc., and has a relatively large planar shape of about 1000 × 1000 mm. In this type of case 100, there is a case in which a gasket mounting groove is not formed on the end surface 101a of the side wall of the housing 101 (or the lower end surface of the side wall of the lid 102). In this case, when the case 100 is assembled, A means for aligning 103 with respect to the housing 101 and the lid 102 is necessary.

  The gasket 103 shown in FIG. 4 is inserted into positioning holes 101b formed at predetermined intervals on the end surface 101a of the side wall of the casing 101 and positioning holes (not shown) formed at predetermined intervals on the end surface of the side wall of the lid 102. The protrusions 103a (only one protrusion is shown in FIG. 4) formed at predetermined intervals on both surfaces of the cover 103 are fitted so as to be positioned at the time of mounting.

  Further, the case 100 shown in FIG. 5 is configured such that the housing 101 and the lid body 102 are coupled to each other via a screw member 104 inserted through coupling flanges 101c and 102a provided at opposite end portions of the side wall. The gasket 103 has a flange portion 103b that is sandwiched between the coupling flanges 101c and 102a, and the screw member 104 is inserted into a positioning hole 103c formed in the flange portion 103b, thereby positioning when mounting. (For example, refer to the following patent document).

JP 2005-327991 A JP-A-11-274783

  However, in the prior art as shown in FIG. 4, it is difficult to position the gasket 103 when the side wall of the casing 101 and the side wall of the lid 102 are thin and there is no space for opening a positioning hole on the end surface. Alternatively, even if the positioning hole can be opened, if the diameter is small (for example, less than φ5 mm), the rigidity of the projection 103a becomes low, and thus positioning cannot be performed reliably and mounting becomes difficult. End up.

  Further, according to the technique as shown in FIG. 5, it is difficult to align the positioning hole 103 c provided in the flange portion 103 b of the gasket 103 with the screw hole 101 d of the coupling flange 101 c of the housing 101, and the screw member 104 is fixed. There is a concern that the gasket 103 may be displaced during the screwing process, the edge of the positioning hole 103c may be bitten between the screw hole 101d and the screw member 104, or the mounting may take time.

  The present invention has been made in view of the above points, and its technical problem is that a gasket mounting groove is formed on the two surfaces of the gasket that is sandwiched between two surfaces facing each other to maintain airtightness. This is to facilitate the positioning of the gasket when the is not formed.

  As a means for effectively solving the technical problem described above, the gasket according to the invention of claim 1 is a gasket sandwiched between two opposed surfaces of two members to be combined with each other, from one of the two surfaces. It has a flange part which controls the displacement of the gasket in the plane direction by being in close contact with the rising side surface.

  According to a second aspect of the present invention, there is provided a gasket portion according to the first aspect of the present invention, wherein the flange portion is formed between two coupling flanges formed in two members combined with each other and coupled to each other via a screw member. The flange portion is formed at a position surrounding the positioning hole formed in the flange portion.

  According to the gasket of the first aspect of the invention, when the two members are combined with each other via the gasket, the flange formed on the gasket is fitted to the side surface rising from one of the two opposite surfaces of the two members. Since the displacement in the planar direction of the gasket is restricted by the close contact, even when the gasket mounting groove is not formed on the two surfaces, positioning is easily performed when the gasket is mounted between the two surfaces. be able to.

  Further, according to the gasket of the second aspect of the present invention, the flange portion of the gasket is reliably restricted from being displaced in the plane direction by the flange portion with respect to the coupling flange formed on the one side member. The gasket can be positioned more easily.

It is a schematic perspective view which shows preferable embodiment of the gasket which concerns on this invention with the two members of mounting | wearing object. It is a principal part top view in preferable embodiment of the gasket which concerns on this invention. FIG. 3 is a cross-sectional view along A-A ′ and a cross-sectional view along B-B ′ in FIG. 2. It is a schematic perspective view which shows an example of the gasket which concerns on a prior art with two members of mounting object. It is a schematic perspective view which shows the other example of the gasket which concerns on a prior art with two members of mounting object.

  Hereinafter, preferred embodiments for carrying out the gasket according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view showing a preferred embodiment of a gasket according to the present invention together with two members to be mounted, FIG. 2 is a plan view of an essential part, and FIG. 3 is a cross-sectional view along AA ′ of FIG. It is -B 'sectional drawing.

  First, in FIG. 1, reference numeral 100 is a case, which includes a casing 101 and a lid 102 that are combined with each other. The case 100 is a battery case, an inverter case, a fuel cell stack storage case or the like, and is a relatively large one having a planar shape of about 1000 × 1000 mm, for example. Note that the casing 101 and the lid 102 correspond to the two members combined with each other according to claim 1.

  A plurality of coupling flanges 101 c each having a screw hole 101 d that can be screwed with the screw member 104 are projected from the upper end portion of the side wall of the housing 101, and the upper end surface of the coupling flange 101 c is formed on the side wall of the housing 101. It is flush with the upper end surface 101a. On the other hand, a plurality of coupling flanges 102a each having a screw insertion hole 102b through which a screw member 104 can be inserted is provided at the lower end portion of the side wall of the lid 102 at a position facing each coupling flange 101c of the housing 101. And the lower end surface thereof is flush with the lower end surface of the side wall of the lid 102. The upper end surface 101a of the side wall of the housing 101 and the upper end surface of the coupling flange 101c, the lower end surface of the side wall of the lid 102, and the lower end surface of the coupling flange 102a are described in claim 1. It corresponds to “two surfaces facing each other”.

  That is, the case 100 is configured such that the casing 101 and the lid 102 are coupled to each other by inserting and screwing the screw member 104 into the coupling flanges 101c and 102a, and the gasket 1 according to the embodiment of the present invention includes: The case 100 is sandwiched between the upper end surface 101 a of the side wall of the housing 101 and the lower end surface of the side wall of the lid 102 to maintain the airtightness of the case 100.

  Specifically, the gasket 1 is made of a rubber-like elastic material (rubber material or synthetic resin material having rubber-like elasticity), and the planar shape thereof includes the upper end face 101a of the side wall of the housing 101 and the coupling flange 101c. It has the same shape and size as the upper end surface, the lower end surface of the side wall of the lid 102 and the lower end surface of the coupling flange 102a. That is, the main body 11 is sandwiched between the upper end surface 101a of the side wall of the housing 101 and the lower end surface of the side wall of the lid 102, and the coupling flange 101c of the housing 101 and the lid are projected from the main body 11. The screw member 104 having the flange portion 12 sandwiched between the connecting flanges 102a of the 102 is inserted into the positioning hole 13 formed in the flange portion 12, and the connecting flanges 101c and 102a are connected to each other. It is like that.

  Further, the upper end surface 101 a of the side wall of the housing 101 is not formed with a gasket mounting groove, and the same applies to the lower end surface of the side wall of the lid 102. As shown in FIG. 3, a plurality of seal protrusions 14 are provided around the upper and lower surfaces of the gasket 1, and the seal protrusions 14 are formed on the upper end surface 101 a of the side wall of the casing 101 and the lid 102. The required sealing performance is ensured by being in close contact with the lower end surface of the side wall in a compressed state.

  A plurality (three in the illustrated example) of flanges 15 protruding in the thickness direction of the gasket 1 are formed in the gasket 1 at positions surrounding the positioning holes 13 formed in the flange portion 12. As shown in FIG. 2, of the flange portion 15, the flange portions 15 a and 15 b are formed on both sides of the flange portion 12 (both sides in the extending direction of the gasket 1). It can be in close contact with the side surfaces of both sides of the coupling flange 101c (both sides in the extending direction of the side wall of the casing 101). Further, the flange portion 15c of the flange portion 15 is formed at the edge of the gasket 1 opposite to the flange portion 12, and is opposite to the coupling flange 101c on the side wall of the housing 101 shown in FIG. It is possible to closely contact the side surface 101e.

  In the above configuration, when assembling the case 100 with the casing 101 and the lid 102 facing each other with the gasket 1 and being joined by the screw member 104, the gasket 1 is previously placed on the upper end surface 101a of the side wall of the casing 101. Place. At this time, the flange 15 formed at a position surrounding each positioning hole 13 of the gasket 1 is fitted into the housing 101.

  Specifically, the flanges 15a and 15b shown in FIG. 2 are tightly fitted to the side surfaces of both sides of the coupling flange 101c of the housing 101 shown in FIG. 1 (both sides in the direction of extension of the side wall of the housing 101) and are shown in FIG. The flange portion 15c is closely fitted to the side surface 101e opposite to the coupling flange 101c on the side wall of the housing 101 shown in FIG. Note that the side surfaces on both sides of the coupling flange 101c and the side surface 101e on the side wall of the housing 101 correspond to the “side surface rising from one of the two surfaces”.

  By doing in this way, the movement of the gasket 1 in the extending direction (X direction in FIG. 2) is regulated between the flange portions 15a and 15b, and the movement in the width direction (Y direction in FIG. 2) is restricted to the flange portion. It is regulated between 15a, 15b and the collar part 15c. In addition, since the flanges 15a, 15b, and 15c are provided so as to surround the positioning hole 13 formed in the flange portion 12, the positioning hole 13 is a screw hole 101d of the coupling flange 101c of the housing 101. Polymerizes with high accuracy.

  Therefore, even if the upper end surface 101a of the side wall of the casing 101 is flat without the gasket mounting groove, the gasket 1 is positioned with high accuracy, and the lid 102 is covered to cover the coupling flange 101c of the casing 101 and the lid. Even when the coupling flange 102a of the body 102 is fastened with the screw member 104, the gasket 1 is not displaced, and the edge of the positioning hole 13 of the gasket 1 is bitten between the screw member 104 and the screw hole 101d. There is no such thing. For this reason, the gasket 1 can be easily positioned when the case 100 is assembled, and the assembly can be easily and quickly performed.

  In the illustrated embodiment, the flange portion 15 protruding in the thickness direction of the gasket 1 is provided at a position surrounding the positioning hole 13 formed in the flange portion 12. 11 corners 11a and corners 11b (see FIG. 1) can also be provided.

DESCRIPTION OF SYMBOLS 100 Case 101 Housing | casing 101c, 102a Connecting flange 102 Cover body 104 Screw member 1 Gasket 11 Main body part 12 Flange part 13 Positioning hole 14 Seal protrusion 15, 15a, 15b, 15c collar part

Claims (2)

  A gasket sandwiched between two opposing surfaces of two members that are combined with each other, and having a flange portion that regulates displacement in the planar direction of the gasket by being in close contact with a side surface rising from one of the two surfaces. Gasket to do.   It has a flange portion formed between two coupling flanges that are formed in two members that are combined with each other and are coupled to each other via a screw member, and the flange portion is located at a position that surrounds the positioning hole formed in the flange portion. The gasket according to claim 1, wherein the gasket is formed.

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