JP2004119022A - Connector seal - Google Patents

Connector seal Download PDF

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Publication number
JP2004119022A
JP2004119022A JP2002276557A JP2002276557A JP2004119022A JP 2004119022 A JP2004119022 A JP 2004119022A JP 2002276557 A JP2002276557 A JP 2002276557A JP 2002276557 A JP2002276557 A JP 2002276557A JP 2004119022 A JP2004119022 A JP 2004119022A
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Japan
Prior art keywords
layer
wide
peripheral
molding
peripheral layer
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Granted
Application number
JP2002276557A
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Japanese (ja)
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JP3956123B2 (en
Inventor
Tadashi Yamaguchi
山口 正
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Nok Corp
Nok株式会社
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Priority to JP2002276557A priority Critical patent/JP3956123B2/en
Publication of JP2004119022A publication Critical patent/JP2004119022A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector seal of two-material integrated type in which the injection method of the molding material suitable for the material property of the elastic body can be adjusted in molding, thereby preventing the deformation of the molded product. <P>SOLUTION: This is a two material integrated type connector seal 1 made by molding in one body an outer peripheral layer 2 made of tubular elastic body and an inner peripheral layer 3 made of tubular elastic body having a different hardness from this outer periphery layer 2. A wide end part 7 which is wider than the tubular main body part 4 of this layer 2 and molded at a position facing the material injecting port of the die in molding is molded in one body at the layer 2 that is molded by a die earlier out of the outer peripheral layer 2 and the inner peripheral layer 3, and a wide end part 11 which is wider than the tubular main body part 6 of the layer 3 and molded at a position facing the material injection port of the die in molding is also molded in one body at the layer 3 molded by a die later out of the outer and the inner peripheral layers 2, 3. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a connector seal, which is a kind of a sealing device, and more particularly, to a connector seal attached to a connector for wiring connection.
[0002]
[Prior art]
Conventionally, for example, a connector 51 for electrical wiring connection as shown in FIG. 11 is known, and the inside of the connector 51 is provided so that its internal components are not exposed to water, dust, and the like. A connector seal 52 is attached so that the connectors are strongly connected to each other.
[0003]
Conventionally, a relatively low-hardness rubber material (Hs 30 to 50) is used as the connector seal 52 in consideration of the mounting workability. Accordingly, the space for mounting the connector seal 52 has become smaller, and the thickness of the connector seal 52 that can follow that space is becoming thinner.
[0004]
Since the thin connector seal 52 does not have rigidity with the conventional rubber hardness, it is twisted at the time of mounting work to the connector case 53 and it takes time to mount the connector seal 53 to a predetermined position. To increase the rigidity of the connector seal 52, it is conceivable to increase the rubber hardness. However, if the rubber hardness is increased, the fitting force at the time of connection of the connector 51 is increased, which causes a problem in connection workability.
[0005]
As a solution to this, a two-material integrated seal 61 has been developed in which the outer layer 62 and the inner layer 63 have different rubber hardness as shown in FIG. 12 (see, for example, Patent Document 1). When it is attempted to form an integral molded article with two materials having different hardnesses, the molded article is originally shown in FIG. 13A due to a difference in the degree of vulcanization of the rubber material, as shown in FIG. As a result, it may be deformed into a distorted shape, causing a problem in the mounting property.
[0006]
It is considered that the flow of the molding material (flowability) influences the deformation. That is, the outer peripheral layer 62 and the inner peripheral layer 63 are both thin cylindrical elastic bodies, and a molding material injection port of a mold is set at a narrow portion of the axial end face. In this case, the size (diameter) of the material injection port cannot exceed the width of each axial end face of the outer peripheral layer 62 and the inner peripheral layer 63. Therefore, since the molding material is injected over a relatively long time from a relatively small material injection port, the degree of vulcanization varies over a long period of time, which causes deformation of the molded product. There is. In addition, if the flow of the molding material is slow, it takes time for the layer (the second layer) of the outer peripheral layer 62 and the inner peripheral layer 63, which is later molded by the mold, to be filled in the mold, In the state where it is not completely formed, since it is bonded to the layer (first layer) which is first formed by the mold, distortion occurs due to an incomplete shape, and the distortion further deforms the first layer. , Overall deformation may occur.
[0007]
As a measure for preventing the deformation of the two-material integrated connector seal 61, it is necessary to adjust the way in which a molding material suitable for the rubber material is poured into the mold, for example, to shorten the time required for material injection. As described above, since the overall thickness of the connector seal 61 tends to be reduced, a space for the simple two-piece shape in the width direction cannot be easily secured even if the flow is adjusted.
[0008]
[Patent Document 1]
JP-A-2002-151194
[0009]
[Problems to be solved by the invention]
In view of the above, in the present invention, in a two-material integrated connector seal, it is possible to adjust a method of pouring a molding material suitable for the material of an elastic body into a mold at the time of molding, thereby forming a molded product. An object of the present invention is to provide a connector seal capable of preventing deformation from occurring.
[0010]
[Means for Solving the Problems]
To achieve the above object, the connector seal according to claim 1 of the present invention integrally forms an outer peripheral layer made of a tubular elastic body and an inner peripheral layer made of a tubular elastic body having a hardness different from that of the outer peripheral layer. In the two-material integrated connector seal formed as described above, the layer (first layer) of the outer peripheral layer and the inner peripheral layer, which is first formed by a mold, is wider than the cylindrical main body of the layer. At the same time, a wide end formed at a position facing the material injection port of the mold at the time of molding is integrally formed, and a layer (second layer) of the outer peripheral layer and the inner peripheral layer, which is later molded by the die. In addition, a wide end portion, which is wider than the cylindrical main body portion of the layer and is formed at a position facing the material injection port of the mold at the time of molding, is integrally formed.
[0011]
The connector seal according to the second aspect of the present invention is the connector seal according to the first aspect, wherein the wide end of one layer is provided in a plurality on the periphery and the thickness of the cylindrical main body of the other layer is increased. Each of the layers is embedded in the thickness, and the wide end of the other layer covers the end face of one layer all around.
[0012]
The connector seal according to the third aspect of the present invention is the connector seal according to the first aspect, wherein a wide end portion of one layer is provided in a plurality on the circumference and a wall of the cylindrical body portion of the other layer is provided. The wide end of the other layer is also divided into a plurality of portions on the circumference and is embedded in the thickness of the cylindrical main body of one layer, and the wide end of one layer is connected to the wide end of the other layer. The wide end portions of the layers are alternately provided on the periphery.
[0013]
Furthermore, the connector seal according to claim 4 of the present invention is the connector seal according to claim 1, wherein the wide end of one layer and the wide end of the other layer are provided on the opposite side in the axial direction. The wide end of the layer covers the entire end surface of the other layer where the wide end is not provided at the cylindrical end of the other layer, and the wide end of the other layer is the one of the layer. The present invention is characterized in that the end face of the tubular main end where the wide end is not provided is covered over the entire circumference.
[0014]
In the connector seal of the present invention having the above configuration, when the molding material is injected into the mold during the molding of the first layer, the molding material is poured from the wide end of the first layer into the cylindrical main body. Therefore, the size of the material injection port of the mold facing the wide end can be set relatively large in accordance with the width of the wide end. It is possible to adjust how the material is poured into the mold, for example, it is possible to shorten the time required for material injection (because the wide end is provided, the wide end is not provided) The size of the injection port can be set larger than in the case. If the injection port is large, the injection time is shortened, so that the molded product is less likely to be deformed.) Also, at the time of molding the second layer, when the molding material is injected into the mold, the molding material is poured from the wide end portion of the second layer into the cylindrical main body portion, and thus faces the wide end portion. The size of the mold material injection port can be set relatively large according to the width of the wide end, and accordingly, adjustment of the way of pouring the molding material suitable for the elastic material into the mold is possible. Can be performed, and for example, the time required for material injection can be shortened.
[0015]
When the present invention is considered as a manufacturing method, a two-material integrated type in which an outer peripheral layer made of a cylindrical elastic body and an inner peripheral layer made of a cylindrical elastic body having a hardness different from that of the outer peripheral layer are integrally formed. In the method for manufacturing a connector seal according to (1), a layer of the outer peripheral layer and the inner peripheral layer, which is formed first by a mold, is wider than the cylindrical main body of the layer and is formed by material injection of the mold at the time of molding. The wide end formed at the position facing the inlet is integrally formed, and the size of the material injection port is set to be larger than the width of the cylindrical main body. Also from the layer to be molded in the mold, the wide end that is wider than the cylindrical main body of the layer and is molded at the position facing the material injection port of the mold during molding is integrally molded, The size of the material inlet is set to be larger than the width of the cylindrical main body. It becomes a manufacturing method of the connector seal and said.
[0016]
In addition, the present application includes the following technical matters.
[0017]
That is, in order to achieve the above object, one connector seal proposed in the present application has the following contents.
[0018]
As a countermeasure against deformation, the product shape was set as follows so that the pouring amount of the dough can be adjusted even with a thin wall.
[0019]
That is, on the side to be vulcanized (formed) first, the width of the dough pouring side is increased, and the space of the dough pouring portion is secured. This space is arranged in a zigzag because if the whole layer is uniform, the dough will not flow when the next layer is vulcanized. The next layer generally covers the previously vulcanized part. By adopting such a shape, it is possible to adjust the dough pouring suitable for the material of each layer at the time of molding, and it is possible to prevent deformation of the product shape. In addition, the torsion at the time of mounting the rubber seal and the mounting force at the time of fitting can provide the same effects as the conventional two layers. Instead of the second layer covering the first layer, both layers may be staggered. Also, the shape of the first layer and the second layer may be set upside down so that they are inverted and formed when forming the second layer.
[0020]
According to such a configuration, it is possible to adjust the pouring of the dough suitable for the material of each layer at the time of molding by adopting the above-mentioned shape, and the mounting force at the time of fitting is also reduced similarly to the conventional two-layer molding. It is secured low, and when the rubber seal is attached to the connector, twisting or the like does not occur, and the same effect as that of the related art can be exhibited. Although the product shape is asymmetric, it is not necessary to consider the assembling directionality due to the asymmetry.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0022]
First embodiment ...
FIG. 1 shows a front view of a connector seal 1 according to a first embodiment of the present invention. FIG. 2 (A) shows an enlarged cross section taken along line AA of FIG. B). FIG. 3 is a partially exploded perspective view of the seal 1 and shows a line CC in FIG.
[0023]
The connector seal 1 according to the present embodiment is a two-material integrated connector seal, and integrally includes an outer peripheral layer 2 made of a tubular elastic body and an inner peripheral layer 3 made of the same tubular elastic body. .
[0024]
Of these, the outer peripheral layer 2 formed first by a mold is formed of a predetermined rubber material and has a predetermined width (thickness) w. 1 And a required number (two in the figure) of annular seal ridges 5 are integrally formed on the outer peripheral surface of the cylindrical main body 4.
[0025]
Further, the inner peripheral layer 3 formed later by the above-mentioned mold is formed of a rubber material having a higher hardness than the outer peripheral layer 2 because the inner peripheral layer 3 is pre-attached to the connector, and has a predetermined width w. 2 The main body 6 has a cylindrical main body 6 having an inner peripheral surface of the cylindrical main body 4 of the outer peripheral layer 2.
[0026]
The width w of the cylindrical main body 4 is provided at one axial end (the upper end in FIG. 2) of the cylindrical main body 4 of the outer peripheral layer 2. 1 Wider width w 3 Is formed integrally, and the wide end 7 integrally has a projection 8 projecting from the inner peripheral surface of the cylindrical main body 4 toward the inner peripheral direction. Height h of projection 8 1 Is the width w of the cylindrical main body 6 of the inner peripheral layer 3 2 An inner surface of the projection 8 has a vertical surface 9 that is straight in the axial direction, and a tapered inclined surface extending from one end of the vertical surface 9 to the inner peripheral surface of the cylindrical main body 4. 10 are provided. Further, the wide end portions 7 are provided on a plurality of portions on the periphery of the outer peripheral layer 2, that is, the protrusions 8 are equally formed at a plurality of portions (four portions in the figure) on the periphery as shown in FIG. 1. Have been.
[0027]
The width w of the cylindrical main body 6 is also provided at one axial end (the upper end in FIG. 2) of the cylindrical main body 6 of the inner peripheral layer 3. 2 Wider width w 4 The wide end portion 11 having the shape is integrally formed, and the wide end portion 11 integrally has a projection 12 projecting from the outer peripheral surface of the cylindrical main body 6 toward the outer peripheral direction. Height h of projection 12 2 Is the width w of the cylindrical main body 4 of the outer peripheral layer 2 1 The wide end portion 11 and the protruding portion 12 are provided over the entire circumference of the inner peripheral layer 3. Therefore, the wide end 11 covers one end (end face) 13 in the axial direction of the outer peripheral layer 2 over the entire surface.
[0028]
The inner peripheral layer 3 is formed on the outer peripheral surface of the cylindrical main body portion 6 of the inner peripheral layer 3 below the wide end portion 11 by a mold so that the inner peripheral layer 3 surrounds the projection 8 of the outer peripheral layer 2. As a result, a concave portion 14 having a shape to accommodate the projection 8 of the outer peripheral layer 2 is formed.
[0029]
Since the connector seal 1 has the above configuration, it can be formed as follows.
[0030]
That is, first, the outer peripheral layer 2 is molded using a mold (not shown). In this mold, the molding material injection port is formed by connecting the end face of the wide end portion 7 of the outer peripheral layer 2 to the inner surface of the product cavity space. 15 and is arranged at a position where the position on the periphery is aligned with the protrusion 8, and the size (diameter) of the material injection port is set to the width w of the cylindrical main body 4. 1 Greater than the width w of the wide end 7 3 The molding material is set to be smaller or the same, and molding is performed by injecting a molding material from the injection port into a portion where the wide end portion 7 is formed in the product cavity space and further into a portion where the cylindrical main body portion 4 is formed. In this way, the size of the injection port is set relatively large, so that the method of pouring the molding material can be adjusted, and for example, the time required for the injection can be shortened. Can be performed.
[0031]
Further, the inner peripheral layer 3 is subsequently formed by using the above-mentioned mold (the mold replaces a part of its component parts). In this mold, the molding material injection port is connected to the inner surface of the product cavity space. The inner peripheral layer 3 is disposed at a position facing the end face 16 of the wide end portion 11, and the size (diameter) of the material injection port is determined by the width w of the cylindrical main body 6. 2 Is larger than the width w of the wide end 11. 4 It is set to be smaller or the same, and molding is performed by injecting a molding material from the injection port into a region where the wide end portion 11 is molded in the product cavity space and further into a region where the cylindrical main body 6 is molded. In this case, similarly to the case of the outer peripheral layer 2, since the size of the injection port is set relatively large, the method of pouring the molding material can be adjusted, and for example, the time required for injection can be shortened. In addition, the inner peripheral layer 3 can be formed smoothly, so that deformation of the connector seal 1 as a molded product can be prevented.
[0032]
As described above, the wide end 7 of the outer peripheral layer 2 has the protrusion 8 embedded in the thickness of the cylindrical main body 6 of the inner peripheral layer 3. When the protrusion 8 is provided over the entire circumference of the seal 1 as shown in FIG. 4 as a comparative example, the material flow path from the wide end 11 of the inner peripheral layer 3 to the cylindrical main body 6 is formed. Since it is narrowed over the entire circumference, there is a possibility that the smooth flow of the molding material may be hindered (the width c of the material flow passage in this case is equal to the width w of the cylindrical main body 6). 2 From the height h of the projection 8 1 , Which is quite small.) On the other hand, according to the connector seal 1 having the above-described configuration, the wide end portion 7 and the projection 8 of the outer peripheral layer 2 are provided in a plurality on the circumference, so that the wide end 7 and the projection 8 are formed. In the upper peripheral portion where the inner peripheral layer 3 is not provided, the inner peripheral layer 3 has the same width w from the wide end 11 to the main body 6 as the main body 6. 2 And thus a smooth flow of the molding material can be ensured. Therefore, also from this point, the molding of the inner peripheral layer 3 can be performed smoothly.
[0033]
Second embodiment ...
FIG. 5 shows a front view of the connector seal 1 according to the second embodiment of the present invention. FIG. 6 (A) shows an enlarged cross section taken along line DD of FIG. B). FIG. 7 is a partially exploded perspective view of the seal 1 and shows the FF portion in FIG. 5 in a straight line.
[0034]
The connector seal 1 according to the present embodiment is a two-material integrated connector seal, and integrally includes an outer peripheral layer 2 made of a tubular elastic body and an inner peripheral layer 3 made of the same tubular elastic body. .
[0035]
Of these, the outer peripheral layer 2 formed first by a mold is formed of a predetermined rubber material and has a predetermined width (thickness) w. 1 And a required number (two in the figure) of annular seal ridges 5 are integrally formed on the outer peripheral surface of the cylindrical main body 4.
[0036]
Further, the inner peripheral layer 3 formed later by the above-mentioned mold is formed of a rubber material having a higher hardness than the outer peripheral layer 2 because the inner peripheral layer 3 is pre-attached to the connector, and has a predetermined width w. 2 The main body 6 has a cylindrical main body 6 having an inner peripheral surface of the cylindrical main body 4 of the outer peripheral layer 2.
[0037]
In addition, one end (the upper end in FIG. 6) in the axial direction of the cylindrical main body 4 of the outer peripheral layer 2 has a width w of the cylindrical main body 4. 1 Wider width w 3 Is formed integrally, and the wide end 7 integrally has a projection 8 projecting from the inner peripheral surface of the cylindrical main body 4 toward the inner peripheral direction. Height h of projection 8 1 Is the width w of the cylindrical main body 6 of the inner peripheral layer 3 2 The inner surface of the projection 8 has a vertical surface 9 that is straight in the axial direction, and a tapered inclined surface extending from one end of the vertical surface 9 to the inner peripheral surface of the cylindrical main body 4. 10 are provided. Further, the wide end portions 7 are provided separately on a plurality of portions on the periphery of the outer peripheral layer 2, that is, the protrusions 8 are equally formed at a plurality of portions (four portions in the figure) on the periphery as shown in FIG. 5. Have been.
[0038]
The width w of the cylindrical main body 6 is also provided at one axial end (the upper end in FIG. 6) of the cylindrical main body 6 of the inner peripheral layer 3. 2 Wider width w 4 The wide end portion 11 having the shape is integrally formed, and the wide end portion 11 integrally has a projection 12 projecting from the outer peripheral surface of the cylindrical main body 6 toward the outer peripheral direction. Height h of projection 12 2 Is the width w of the cylindrical main body 4 of the outer peripheral layer 2 1 The projection 12 has an outer surface provided with a vertical surface 17 that is straight in the axial direction and a horizontal surface 18 that is orthogonal to the vertical surface 17. Further, the wide end portion 11 is provided in a plurality on the periphery of the inner peripheral layer 3, that is, the protrusions 12 are equally distributed at a plurality of places (four places in the figure) on the periphery as shown in FIG. 5. The protrusions 12 and the protrusions 8 of the outer peripheral layer 2 are alternately arranged on the circumference.
[0039]
Further, at one axial end (upper end in FIG. 6) of the cylindrical main body 6 of the inner peripheral layer 3, the inner peripheral layer 3 is formed later by a mold so as to surround the projection 8 of the outer peripheral layer 2. As a result, the concave portion 14 having the shape for accommodating the protrusion 8 of the outer peripheral layer 2 is formed as a notch having a full width. Also, a concave portion 19 having a shape for accommodating the protrusion 12 of the inner peripheral layer 3 is formed as a notch with a full width at one axial end portion (upper end portion in FIG. 6) of the cylindrical main body portion 4 of the outer peripheral layer 2. However, the recess 19 is formed by a mold for molding the outer peripheral layer 2.
[0040]
Since the connector seal 1 has the above configuration, it can be formed as follows.
[0041]
That is, first, the outer peripheral layer 2 is molded using a mold (not shown). In this mold, the molding material injection port is formed by connecting the end face of the wide end portion 7 of the outer peripheral layer 2 to the inner surface of the product cavity space. 15 and is arranged at a position where the position on the periphery is aligned with the protrusion 8, and the size (diameter) of the material injection port is set to the width w of the cylindrical main body 4. 1 Greater than the width w of the wide end 7 3 The molding material is set to be smaller or the same, and molding is performed by injecting a molding material from the injection port into a portion where the wide end portion 7 is formed in the product cavity space and further into a portion where the cylindrical main body portion 4 is formed. In this way, the size of the injection port is set relatively large, so that the method of pouring the molding material can be adjusted, and for example, the time required for the injection can be shortened. Can be performed.
[0042]
Further, the inner peripheral layer 3 is subsequently formed by using the above-mentioned mold (the mold replaces a part of its component parts). In this mold, the molding material injection port is connected to the inner surface of the product cavity space. The inner peripheral layer 3 is disposed at a position facing the end face 16 of the wide end portion 11, and the size (diameter) of the material injection port is determined by the width w of the cylindrical main body 6. 2 Is larger than the width w of the wide end 11. 4 It is set to be smaller or the same, and molding is performed by injecting a molding material from the injection port into a region where the wide end portion 11 is molded in the product cavity space and further into a region where the cylindrical main body 6 is molded. In this case, similarly to the case of the outer peripheral layer 2, since the size of the injection port is set relatively large, the method of pouring the molding material can be adjusted, and for example, the time required for injection can be shortened. In addition, the inner peripheral layer 3 can be formed smoothly, so that deformation of the connector seal 1 as a molded product can be prevented.
[0043]
The wide end portion 7 of the outer peripheral layer 2 has a projection 8 formed by the entire width w of the cylindrical main body 6 of the inner peripheral layer 3. 2 The wide end 7 and the projection 8 are not provided because the wide end 7 and the projection 8 are provided on the periphery of the outer peripheral layer 2 in a plurality. In the upper peripheral portion, these do not hinder the flow of the molding material when the inner peripheral layer 3 is molded. Therefore, a smooth flow of the molding material can be ensured, and the molding of the inner peripheral layer 3 can be smoothly performed from this point as well.
[0044]
Third embodiment ...
FIG. 8 shows a front view of the connector seal 1 according to the third embodiment of the present invention, and its GG line enlarged cross section is shown in FIG. FIG. 10 is a partially exploded perspective view of the seal 1 and shows the HH portion in FIG. 8 in a straight line.
[0045]
The connector seal 1 according to the present embodiment is a two-material integrated connector seal, and integrally includes an outer peripheral layer 2 made of a tubular elastic body and an inner peripheral layer 3 made of the same tubular elastic body. .
[0046]
Of these, the outer peripheral layer 2 formed first by a mold is formed of a predetermined rubber material and has a predetermined width (thickness) w. 1 And a required number (two in the figure) of annular seal ridges 5 are integrally formed on the outer peripheral surface of the cylindrical main body 4.
[0047]
The inner peripheral layer 3 formed later by the above-mentioned mold is formed of a rubber material having higher hardness than the outer peripheral layer 2 and has a predetermined width w. 2 The main body 6 has a cylindrical main body 6 having an inner peripheral surface of the cylindrical main body 4 of the outer peripheral layer 2.
[0048]
The width w of the cylindrical main body 4 is provided at one axial end (the lower end in FIG. 9) of the cylindrical main body 4 of the outer peripheral layer 2. 1 Wider width w 3 Is formed integrally, and the wide end 7 integrally has a projection 8 projecting from the inner peripheral surface of the cylindrical main body 4 toward the inner peripheral direction. Height h of projection 8 1 Is the width w of the cylindrical main body 6 of the inner peripheral layer 3 2 The wide end portion 7 and the protruding portion 8 are provided all around the outer peripheral layer 2. Therefore, the wide end portion 7 covers one end portion 20 of the inner peripheral layer 3 in the axial direction over the entire surface.
[0049]
The width w of the cylindrical main body 6 is also provided at the other axial end (the upper end in FIG. 9) of the cylindrical main body 6 of the inner peripheral layer 3. 2 Wider width w 4 The wide end portion 11 having the shape is integrally formed, and the wide end portion 11 integrally has a projection 12 projecting from the outer peripheral surface of the cylindrical main body 6 toward the outer peripheral direction. Height h of projection 12 2 Is the width w of the cylindrical main body 4 of the outer peripheral layer 2 1 The wide end portion 11 and the protruding portion 12 are provided over the entire circumference of the inner peripheral layer 3. Therefore, the wide end portion 11 covers one end portion 13 in the axial direction of the outer peripheral layer 2 over the entire surface.
[0050]
Since the connector seal 1 has the above configuration, it can be formed as follows.
[0051]
That is, first, the outer peripheral layer 2 is molded using a mold (not shown). In this mold, the molding material injection port is formed by connecting the end face of the wide end portion 7 of the outer peripheral layer 2 to the inner surface of the product cavity space. 15 and the size (diameter) of the material injection port is set to the width w of the cylindrical main body 4. 1 Greater than the width w of the wide end 7 3 The molding material is set to be smaller or the same, and molding is performed by injecting a molding material from the injection port into a portion where the wide end portion 7 is formed in the product cavity space and further into a portion where the cylindrical main body portion 4 is formed. In this way, the size of the injection port is set relatively large, so that the method of pouring the molding material can be adjusted, and for example, the time required for the injection can be shortened. Can be performed.
[0052]
Further, the inner peripheral layer 3 is subsequently formed by using the above-mentioned mold (the mold replaces a part of its component parts). In this mold, the molding material injection port is connected to the inner surface of the product cavity space. The inner peripheral layer 3 is disposed at a position facing the end face 16 of the wide end portion 11, and the size (diameter) of the material injection port is determined by the width w of the cylindrical main body 6. 2 Is larger than the width w of the wide end 11. 4 It is set to be smaller or the same, and molding is performed by injecting a molding material from the injection port into a region where the wide end portion 11 is molded in the product cavity space and further into a region where the cylindrical main body 6 is molded. In this case, similarly to the case of the outer peripheral layer 2, since the size of the injection port is set relatively large, the method of pouring the molding material can be adjusted, and for example, the time required for injection can be shortened. In addition, the inner peripheral layer 3 can be formed smoothly, so that deformation of the connector seal 1 as a molded product can be prevented.
[0053]
Further, as described above, since the wide end portion 7 of the outer peripheral layer 2 and the wide end portion 11 of the inner peripheral layer 3 are provided on the opposite sides in the axial direction, the outer peripheral layer 2 formed first by a die is formed. The wide end portion 7 and the protruding portion 8 do not impede the flow of the molding material at the time of forming the inner peripheral layer 3 which is formed later by using a mold. Therefore, a smooth flow of the molding material can be ensured, and the molding of the inner peripheral layer 3 can be smoothly performed from this point as well.
[0054]
【The invention's effect】
The present invention has the following effects.
[0055]
That is, in the connector seal according to the first aspect of the present invention having the above-described configuration, as described above, when the molding material is injected into the mold at the time of molding the first layer, the first layer has a wide end. Since the molding material is poured into the cylindrical main body, the size of the material injection port of the mold facing the wide end can be set relatively large in accordance with the width of the wide end. Accordingly, it is possible to adjust how the molding material is poured, and for example, it is possible to reduce the time required for material injection. Also, at the time of molding the second layer, when the molding material is injected into the mold, the molding material is poured from the wide end portion of the second layer into the cylindrical main body portion, and thus faces the wide end portion. The size of the material injection port of the mold can be set relatively large in accordance with the width of the wide end, and accordingly, it is possible to adjust the flow of the molding material. Time can be reduced. Therefore, the outer peripheral layer and the inner peripheral layer can be formed smoothly, so that deformation of the molded connector seal can be prevented.
[0056]
In addition, since the cylindrical main body portion and the wide end portion of the outer peripheral layer and the cylindrical main body portion and the wide end portion of the inner peripheral layer are three-dimensionally combined, relative movement can be stopped by unevenness. Since the bonding area can be increased, the bonding strength between the two layers can be enhanced, and peeling can be prevented.
[0057]
In addition to this, in the connector seal according to the second or third aspect of the present invention having the above configuration, the wide end portion of one layer is provided in a plurality on the periphery, and in the connector seal according to the fourth aspect, Since the wide end of one layer and the wide end of the other layer are arranged on the opposite sides in the axial direction, in any case, the layer formed first by the mold is the layer formed later. Obstructing the flow of the molding material can be suppressed. Therefore, a smooth flow of the molding material can be ensured, and the molding can be performed smoothly from this point as well.
[Brief description of the drawings]
FIG. 1 is a front view of a connector seal according to a first embodiment of the present invention.
2A is an enlarged sectional view taken along line AA in FIG. 1, and FIG. 2B is an enlarged sectional view taken along line BB in FIG.
FIG. 3 is a structural explanatory view of the seal.
FIG. 4 is a structural explanatory view of a seal according to a comparative example.
FIG. 5 is a front view of a connector seal according to a second embodiment of the present invention.
6A is an enlarged sectional view taken along line DD in FIG. 5, and FIG. 6B is an enlarged sectional view taken along line EE in FIG.
FIG. 7 is a structural explanatory view of the seal.
FIG. 8 is a front view of a connector seal according to a third embodiment of the present invention.
9 is an enlarged sectional view taken along line GG in FIG. 8;
FIG. 10 is a structural explanatory view of the seal.
FIG. 11 is an explanatory view showing an example of a connector.
FIG. 12 is a cross-sectional view of a conventional connector seal.
13A is a front view showing a regular shape of the seal, and FIG. 13B is a front view showing an example of a deformed state of the seal.
[Explanation of symbols]
1 Connector seal
2 Outer layer
3 Inner layer
4,6 tubular body
5 Seal ridges
7,11 Wide end
8,12 Projection
9,17 vertical plane
10 Slope
13,20 One end (end face)
14, 19 recess
15, 16 end face
18 Horizontal plane

Claims (4)

  1. In a two-material integrated connector seal obtained by integrally molding an outer peripheral layer made of a cylindrical elastic body and an inner peripheral layer made of a cylindrical elastic body having a hardness different from that of the outer peripheral layer,
    Of the outer peripheral layer and the inner peripheral layer, the layer that is first molded with the mold is formed at a position that is wider than the cylindrical main body of the layer and faces the material injection port of the mold during molding. The wide end is integrally molded,
    Of the outer peripheral layer and the inner peripheral layer, the layer that is later molded by the mold is also formed at a position that is wider than the cylindrical main body of the layer and that faces the material injection port of the mold during molding. A connector seal characterized by integrally molding the wide end to be formed.
  2. The connector seal according to claim 1,
    The wide end of one layer is provided in a plurality on the periphery and is embedded in the thickness of the cylindrical main body of the other layer, and the wide end of the other layer covers the entire end surface of one layer. A connector seal characterized by being coated over the circumference.
  3. The connector seal according to claim 1,
    The wide end portion of one layer is provided in a plurality on the periphery and is embedded in the thickness of the cylindrical body portion of the other layer, and the wide end portion of the other layer is provided on the periphery in a plurality of portions. A connector seal buried in the thickness of the cylindrical main body of one layer, and the wide end of one layer and the wide end of the other layer are alternately provided on the circumference.
  4. The connector seal according to claim 1,
    The wide end of one layer and the wide end of the other layer are provided on the opposite side in the axial direction, and the wide end of one layer is not provided with the wide end of the cylindrical end of the other layer. The end of the other layer is covered over the entire circumference, and the wide end of the other layer is provided over the entire end of the tubular main end of one layer where the wide end is not provided. A connector seal characterized by being covered with a connector.
JP2002276557A 2002-09-24 2002-09-24 Connector seal Active JP3956123B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002276557A JP3956123B2 (en) 2002-09-24 2002-09-24 Connector seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002276557A JP3956123B2 (en) 2002-09-24 2002-09-24 Connector seal

Publications (2)

Publication Number Publication Date
JP2004119022A true JP2004119022A (en) 2004-04-15
JP3956123B2 JP3956123B2 (en) 2007-08-08

Family

ID=32272393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002276557A Active JP3956123B2 (en) 2002-09-24 2002-09-24 Connector seal

Country Status (1)

Country Link
JP (1) JP3956123B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8390341B2 (en) 2009-07-13 2013-03-05 Rohm Co., Ltd. Output circuit
US9024558B2 (en) 2012-05-28 2015-05-05 Rohm Co., Ltd. Bridge output circuit, motor driving device using the same, and electronic apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8390341B2 (en) 2009-07-13 2013-03-05 Rohm Co., Ltd. Output circuit
US8710878B2 (en) 2009-07-13 2014-04-29 Rohm Co., Ltd. Output circuit
US9024558B2 (en) 2012-05-28 2015-05-05 Rohm Co., Ltd. Bridge output circuit, motor driving device using the same, and electronic apparatus

Also Published As

Publication number Publication date
JP3956123B2 (en) 2007-08-08

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