Seal assembly and manufacturing device for manufacturing seal assembly

Abstract

[Problem] The purpose of the present invention is to provide a seal assembly for improving the assembly workability of a seal, and a manufacturing device for manufacturing a seal assembly. [Solution] A seal assembly provided with: a terminal holding part (20) having a plate-shaped terminal (2), an embedded part (61) in which a part of the terminal is embedded, and a cylindrical part (63) which is continuous with the embedded part so as to surround the terminal; and an annular seal (5) that is inserted so as to surround the terminal from the outside and seal the inner space (S) of the cylindrical portion, in which an exhaust mechanism (62) is provided in the embedded portion, the exhaust mechanism (62) being configured to discharge to the outside air on the insertion direction side (Y2) of the seal in the inner space.

Description

Technical Field

[0001] The invention relates to a sealing component assembly and a manufacturing device for manufacturing the sealing component assembly. Background Art

[0002] Conventionally, there is a terminal block which is inserted into an opening provided in a housing of a device or the like and fastened to the housing by bolts to conduct between the inside and the outside of the housing (for example, see Patent Document 1). Figure 7 is a cross-sectional view showing an example of a conventional terminal block. As an example of a terminal block, Figure 7 As shown in the figure, it is provided with: a terminal 102; a housing 106, the housing 106 including an embedded portion 161 and a cylindrical portion 162, a part of the terminal 102 is embedded in the embedded portion 161, the cylindrical portion 162 is continuous with the embedded portion 161 and has an accommodating space 106S for accommodating the terminal 102; a seal 105, the seal 105 is inserted to surround the terminal 102 while blocking the accommodating space 106S; and a retainer not shown in the figure, the retainer is assembled into the cylindrical portion 162. In this conventional terminal block 101, the seal 105 is arranged to be in close contact with the inner peripheral surface of the terminal 102 and the cylindrical portion 162, thereby ensuring waterproofness.

[0003] [Citation List]

[0004] [Patent Document]

[0005] [Patent Document 1] JP2010-211933A Summary of the invention

[0006] [Technical issues]

[0007] However, in the conventional terminal block 101, the embedded portion 161 of the housing 106 is constructed to be solid while embedding a portion of the terminal 102 therein. Therefore, when the seal 105 is externally inserted (inserted) into the terminal 102 in a state where the terminal 102 is supported by the housing 106, one side in the insertion direction (the front side in the forward direction) of the seal 105 in the housing space 106S becomes the sealing area 101A, and a large insertion force is required to insert the seal 105. Therefore, the operability of assembling the seal 105 is poor.

[0008] An object of the present invention is to provide a seal assembly for improving the assembly workability of a seal, and a manufacturing device for manufacturing the seal assembly.

[0009] [Solution to the problem]

[0010] In order to solve the above-mentioned problems, the invention according to claim 1 is a sealing assembly, comprising: a terminal retaining portion, which has a plate-shaped terminal, an embedded portion and a cylindrical portion, a part of the terminal is embedded in the embedded portion, and the cylindrical portion is continuous with the embedded portion to surround the terminal; and an annular sealing member, which is inserted to surround the terminal from the outside and seal the internal space of the cylindrical portion, wherein an exhaust mechanism is provided in the embedded portion, and the exhaust structure is constructed to discharge air on the insertion direction side of the seal in the internal space to the outside.

[0011] The invention according to claim 3 is a manufacturing device for manufacturing a sealing assembly according to claim 2, comprising: a mold for inserting a terminal to mold a terminal retaining portion; a first insert for forming a first channel, in which the terminal is inserted; and a pair of second inserts for forming a pair of second channels, wherein the pair of second inserts are arranged in a rod shape, and the first insert is constructed to include: a cylindrical first insert body, in which the terminal can be inserted; and a pair of insertion holes, which are arranged in the first insert body, and the pair of second inserts are respectively inserted into the pair of insertion holes.

[0012] [Effects of the invention]

[0013] According to the present disclosure, it is possible to improve the assembling workability of the sealing member. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a perspective view showing a terminal block according to an embodiment of the present invention.

[0015] Figure 2 This is an exploded perspective view of the terminal block.

[0016] Figure 3 is along Figure 1 A cross-sectional view taken along line II in FIG.

[0017] Figure 4 It is shown Figure 3 A view of an enlarged view of the main part.

[0018] Figure 5 is a view showing a manufacturing apparatus for manufacturing a terminal block.

[0019] Figure 6 It is a cross-sectional view showing a state where a terminal block is manufactured using a manufacturing apparatus.

[0020] Figure 7 is a cross-sectional view showing an example of a conventional terminal block.

[0021] Reference Mark List

[0022] 2 terminals

[0023] 20 Terminal holding portion

[0024] 5-terminal seal (seal)

[0025] 61 Embedded part

[0026] 63 cylindrical part

[0027] 62 Exhaust mechanism

[0028] 62A Channel 1

[0029] 62Af Front end of the first channel (one end)

[0030] 62Ab The back end (other end) of the first channel

[0031] 62B1, 62B2 a pair of second channels

[0032] 10 Manufacturing equipment

[0033] 11 First Insert

[0034] 110 first insert body

[0035] 111, 111 a pair of insertion holes

[0036] 12A1, 12A2 a pair of second inserts

[0037] S Accommodation space (internal space of the cylindrical part)

[0038] Z vertical direction (direction perpendicular to the axis of the first insert body)

[0039] X left-right direction (width direction perpendicular to the axis of the first insert body) DETAILED DESCRIPTION

[0040] Hereinafter, embodiments of the present invention will be described according to the accompanying drawings. Figure 1 is a perspective view showing a terminal block 1 according to an embodiment of the present invention. Figure 2 It is an exploded perspective view of the terminal block 1. Figure 3 is along Figure 1 A cross-sectional view taken along line II in FIG.

[0041] The terminal block 1 according to the present embodiment is fastened to a support body having an assembly hole by bolts so that a pair of connection targets sandwiching the support body and disposed outside and inside the support body are brought into conduction. Figure 1 and Figure 2 As shown, the terminal block 1 includes: a terminal holding portion 20 (such as Figure 1As shown in the figure), a retainer 3 assembled to the terminal retaining portion 20 to support each terminal 2, an annular retaining portion seal 4 between the terminal retaining portion 20 and the periphery of the assembly hole, and an annular terminal seal (seal) 5 installed on each terminal 2. The terminal retaining portion 20 and the terminal seal (seal) 5 constitute a seal assembly.

[0042] In the following, Figure 2 As shown, the moving direction of the terminal seal 5 when it is inserted into the terminal 2 can be called the "front-rear direction" and can be indicated by the "arrow Y", the direction orthogonal to the front-rear direction Y and in which the three terminals 2 are arranged can be called the "left-right direction" and can be indicated by the "arrow X", and the direction orthogonal to the arrows X and Y can be called the "up-down direction" and can be indicated by the "arrow Z". In addition, one side of the arrow Y ( Figure 2 The front side in the figure) can be referred to as the "front side Y1", and the other side opposite thereto ( Figure 2 The rear side in the figure, the direction in which the terminal seal 5 is inserted into the terminal 2) can be indicated by the “rear side Y2”.

[0043] like Figure 1 As shown, the terminal holding portion 20 includes three terminals 2 and a resin molded portion 6 that holds the three terminals 2 , wherein the three terminals 2 are formed integrally in the resin molded portion 6 by insert molding.

[0044] like Figure 2 As shown, three terminals 2 are arranged side by side in the left-right direction X. Each terminal 2 is constructed by bending a rectangular metal plate into an L-shape, and each terminal 2 includes a horizontal plate portion 2A and an orthogonal plate portion 2B, and the orthogonal plate portion 2B is bent at the end portion of the rear side Y2 of the horizontal plate portion 2A to extend on one side (downward) of the up-down direction Z. The horizontal plate portion 2A is arranged to extend in a planar shape including the front-to-back direction Y and the left-to-right direction X, and the orthogonal plate portion 2B is arranged to extend in a planar shape including the up-to-down direction Z and the left-to-right direction X. Moreover, a first bolt hole 2a that is fastened to one of a pair of connection objects by bolts is provided in the front end portion of the horizontal plate portion 2A (the end away from the orthogonal plate portion 2B), and a second bolt hole 2b that is fastened to the other of a pair of connection objects by bolts is provided in the lower end portion of the orthogonal plate portion 2B (the end away from the horizontal plate portion 2A).

[0045] like Figure 2 and Figure 3As shown, the resin molded portion 6 includes: an embedded portion 61, which is arranged in a block shape and is configured to embed the central portion of the three terminals 2 in the front-to-rear direction Y (the portion of the rear side Y2 in the horizontal plate portion 2A); an exhaust mechanism 62, which is arranged in the embedded portion 61; a cylindrical portion 63, which is continuously arranged with the embedded portion 61 on the front side Y1, and the cylindrical portion 63 has a storage space S, and the terminal 2 is accommodated in the storage space S; and a flange portion 64, which extends in a flange shape on the rear side Y2 of the embedded portion 61 and has a pair of bolt holes 6a, 6a (such as Figure 2 shown).

[0046] like Figure 3 As shown, the embedded portion 61 is provided with a seal accommodating portion 610 for accommodating the retaining portion seal 4 at its outer peripheral portion. The seal accommodating portion 610 is provided at the front side Y1 of the second passages 62B1, 62B2 in the exhaust mechanism 62 described below in the front-rear direction Y. In addition, the seal accommodating portion 610 is constructed by cutting the entire circumference of the outer peripheral surface of the embedded portion 61 into a groove shape. The embedded portion 61 is configured to be supported by being inserted into an assembly hole provided in the support body via the retaining portion seal 4 in a state where the retaining portion seal 4 described below is accommodated in the seal accommodating portion 610.

[0047] like Figure 3 and Figure 4 As shown, the exhaust mechanism 62 includes a first channel 62A disposed around the terminal 2 with the front-rear direction Y as an axis and a pair of second channels 62B1 and 62B2 continuous with the first channel 62A. Figure 4 As shown, the first channel 62A is provided with a front end 62Af (one end) which communicates with the accommodation space S located inside the cylindrical portion 63 described below and extends straight toward the rear side Y2. A pair of second channels 62B1, 62B2 are configured to be continuous with the rear end 62Ab (the other end) of the first channel 62A and are provided at both ends of the clamping terminal 2 so as to extend straight in the up-down direction Z extending in the radial direction of the cylindrical portion 63. In this way, the exhaust mechanism 62 is configured to be able to exhaust the air inside the accommodation space S to the outside via the first channel 62A and the pair of second channels 62B1, 62B.

[0048] like Figure 2 and Figure 3 As shown, the cylindrical portion 63 is partitioned by two partitions 65 in the left-right direction X, and is configured to have three spaces (accommodation spaces S).

[0049] like Figure 2 and Figure 3As shown, the retaining member 3 includes: a plate-shaped retaining member body 31, which contacts the front end face of the cylindrical portion 63 in the resin molded portion 6 and has three terminal holes 30 for respectively inserting the terminals 2; three insertion mating portions 32, each of which is arranged in a cylindrical shape to be continuous with the inner circumferential surface of each terminal hole 30 of the retaining member body 31 and inserted into each accommodating space S; and a plate-shaped insulating plate 33, which protrudes toward the front side Y1 of the retaining member body 31 and is arranged between the terminal holes 30 adjacent to each other to insulate the terminals 2 from each other.

[0050] like Figure 2 As shown, the terminal seals 5 are provided in the same number (three) as the terminals 2. The terminal seals 5 are configured to be inserted into the outside of the horizontal plate portion 2A of each terminal 2 and to be located inside the accommodation space S provided in the resin molding portion 6. Such terminal seals 5 are configured to be in close contact with the inner peripheral surface of each terminal 2 and each accommodation space S to prevent water from entering the rear side Y2 relative to the accommodation space S.

[0051] Next, we will refer to Figure 5 and Figure 6 A manufacturing apparatus 10 for manufacturing the terminal holding portion 20 in the terminal block 1 is described.

[0052] like Figure 5 and Figure 6 As shown, the manufacturing device 10 includes: a mold (not shown in the figure) for insert molding three terminals 2 in the resin molding part 6; three first inserts 11, each of which is inserted into the horizontal plate portion 2A of each terminal 2; and a pair of second inserts 12A1, 12A2 corresponding to each first insert 11. The mold is formed into a box shape capable of forming the resin molding part 6 while supporting the three terminals 2 at predetermined positions.

[0053] like Figure 5 As shown, the first insert 11 is configured to include a cylindrical first insert body 110 and a pair of insertion holes 111, 111, into which the terminal 2 can be inserted, and a pair of insertion holes 111, 111 are provided in the first insert body 110 for inserting a pair of second inserts 12A1, 12A2, respectively. The first insert body 110 is formed into a rectangular cylindrical shape to include an upper wall 112 and a lower wall 113 opposite to each other in the up-down direction Z, and a pair of side walls 114, 114 opposite to each other in the left-right direction X. The first insert body 110 is configured to allow the horizontal plate portion 2A of the terminal 2 to be inserted therein.

[0054] like Figure 6As shown, the pair of insertion holes 111, 111 is provided at the rear end portion of the first insert body 110. One of the pair of insertion holes 111, 111 is provided in the upper wall 112, and the other is provided in the lower wall 113. Moreover, the pair of insertion holes 111, 111 is provided at the center portion in the left-right direction X (the center portion in the width direction) in each of the upper wall 112 and the lower wall 113, and is provided at positions opposite to each other in the up-down direction Z.

[0055] like Figure 6 As shown, a pair of second inserts 12A1, 12A2 are provided in a rod shape and are configured to be inserted into a pair of insertion holes 111, 111 provided in the first insert 11. Such a pair of second inserts 12A1 and 12A2 are configured to be inserted into the insertion holes 111, respectively, in a state where each terminal 2 is inserted into the first insert body 110, so as to position each terminal 2 in the up-down direction Z.

[0056] In the case of manufacturing the terminal holding portion 20 using such a mold, the first insert 11 and the pair of second inserts 12A1, 12A2, the front end of each terminal 2 is brought close to the rear end of each first insert 11 and inserted therein. When each terminal 2 reaches a predetermined position, the insertion of each terminal 2 is stopped, and the pair of second inserts 12A1, 12A2 are respectively inserted into the pair of insertion holes 111, 111 to vertically clamp each terminal 2 and position each terminal 2 through the pair of second inserts 12A1, 12A2. In this state, molten resin is poured into the mold and the resin is solidified. Thereafter, the molded product is removed from the mold, the pair of second inserts 12A1, 12A2 are respectively pulled out from the pair of insertion holes 111, 111, each first insert 11 is moved to the front side Y1 of each terminal 2, and each first insert 11 is pulled out. In this way, the first passage 62A is formed in the portion where the first inserting member 11 is provided, and the second passages 62B1, 62B2 are formed in the portion where the second inserting members 12A1, 12A2 are provided. In this way, the terminal holding portion 20 into which the respective terminals 2 are inserted is formed.

[0057] Subsequently, in the case of assembling the terminal block 1, the terminal holding portion 20, the holding member 3, the holding portion seal 4 and the terminal seal 5 are respectively manufactured in advance. The terminal holding portion 20 is constructed by insert molding the three terminals 2 into the resin molded portion 6. That is, the three terminals 2 are integrally formed with the resin molded portion 6.

[0058] First, the terminal seal 5 is inserted onto the horizontal plate portion 2A of each terminal 2 provided in the terminal holding portion 20, and the terminal seal 5 is moved toward the rear side Y2 of the terminal 2. At this time, in the accommodation space S, the air on the rear side Y2 of the terminal seal 5 is discharged to the outside through the first channel 62A and the second channel 62B1, and is also discharged to the outside through the first channel 62A and the second channel 62B2. In this way, the terminal seal 5 is attached to the predetermined position of each terminal 2, and the accommodation space S is sealed by the terminal seal 5.

[0059] Thereafter, each insertion mating portion 32 of the retainer 3 is brought close to the end of each terminal 2, and the retainer 3 is moved toward the rear side Y2 so that the terminal 2 is inserted into each insertion mating portion 32. As the movement proceeds, the insertion mating portion 32 is accommodated in each accommodation space S. As the movement further proceeds, the retainer body 31 contacts the front end surface of the cylindrical portion 63 in the resin molded portion 6. Thereafter, the retainer seal 4 is inserted to surround the terminal retaining portion 20, and the retainer seal 4 is accommodated in the seal accommodating portion 610. In this way, the assembly of the retainer 3 to the terminal retaining portion 20 is completed. This completes the assembly of the terminal block 1.

[0060] According to the above embodiment, there are provided: a plate-shaped terminal 2; a terminal holding portion 20, which includes an embedded portion 61 in which a part of the terminal 2 is embedded and a cylindrical portion 63 arranged to be continuous with the embedded portion 61 to surround the terminal 2; and an annular terminal seal (seal) 5, which is externally inserted into the terminal 2 and seals the accommodation space (internal space) S of the cylindrical portion 63, wherein an exhaust mechanism 62 is provided in the embedded portion 61, and the exhaust mechanism 62 is configured to exhaust the air on the rear side Y2 of the terminal seal 5 in the accommodation space S (the insertion direction side of the terminal seal 5). According to this configuration, the exhaust mechanism 62 is arranged so that in the accommodation space S, the air on the rear side Y2 of the terminal seal 5 is discharged to the outside (the air is exhausted) through the exhaust mechanism 62. Therefore, when each terminal seal 5 is externally inserted (inserted) into each terminal 2, the insertion force when inserting the terminal seal 5 is reduced, and the assembly operability of the terminal seal 5 can be improved.

[0061] In addition, the exhaust mechanism 62 has: a first passage 62A, the front end 62Af (one end) of which is arranged to communicate with the accommodation space S (internal space) and extends to the rear side Y2 (the direction away from the terminal seal (seal) 5); and second passages 62B1, 62B2, which are continuous with the rear end 62Ab (the other end) of the first passage 62A and extend in the radial direction of the cylindrical portion 63, and the second passages 62B1, 62B2 are arranged in pairs to clamp the terminal 2 from both sides in the radial direction (up and down direction Z). When the terminal seal 5 is externally inserted (inserted) into the terminal 2, a configuration that reduces the insertion force when inserting the terminal seal 5 can be achieved.

[0062] The manufacturing device 10 for manufacturing the sealing member assembly further includes: a mold for inserting the terminal 2 and molding the terminal holding portion 20; a first insert 11 in which the terminal 2 is inserted and configured to form the first passage 62A; and a pair of second inserts 12A1, 12A2 for forming the pair of second passages 62B1, 62B2, wherein the pair of second inserts 12A1, 12A2 are provided in a rod shape, and the first insert 11 is configured to have a cylindrical first insert body 110 into which the terminal 2 can be inserted, and a pair of insertion holes 111, 111 are provided in the first insert body 110, and the pair of second inserts 12A1, 12A2 are respectively inserted into the pair of insertion holes 111, 111. Therefore, during insert molding, the terminal 2 is clamped and supported by the pair of second inserts 12A1, 12A2 inserted into the pair of insertion holes 111, 111, thereby improving the position accuracy of the terminal 2.

[0063] Furthermore, the pair of insertion holes 111, 111 are provided at positions facing each other in the vertical direction Z (orthogonal direction to the axis of the first insert body 110). According to this configuration, in the vertical direction Z, the positional accuracy of the terminal 2 in the terminal holding portion 20 is improved.

[0064] In addition, a pair of insertion holes 111, 111 is provided in the central portion in the left-right direction X (the width direction orthogonal to the axis of the first insert body 110). Thus, the terminal 2 is stably supported in the mold by the pair of second inserts 12A1 and 12A2. Therefore, the position accuracy of the terminal 2 in the terminal holding portion 20 is further improved.

[0065] It should be noted that the present invention is not limited to the above-mentioned embodiments, but also includes other structures that can achieve the purpose of the present invention. The present invention also includes the following modified examples.

[0066] In the above embodiment, the terminal block 1 is described as an example, and the terminal block 1 includes a terminal holding portion 20 for holding three terminals 2, a retaining member 3 assembled to the terminal holding portion 20 to support each terminal 2, an annular retaining portion seal 4 inserted between the terminal holding portion 20 and the periphery of the assembly hole, and an annular terminal seal (seal) 5 attached to each terminal 2, however, the present invention is not limited to this. It is sufficient if the construction includes a seal assembly having at least a terminal holding portion 20 and a terminal seal 5. In this case, the retaining member 3 and the retaining portion seal 4 can be omitted.

[0067] Furthermore, in the above-described embodiment, three terminals 2 are provided, however, the present invention is not limited thereto. It is sufficient to provide at least one terminal 2, and two, four or more terminals may be provided.

[0068] In the above embodiment, the exhaust mechanism 62 is described as including the first channel 62A arranged around the terminal 2 with the front-rear direction Y as the axis and the pair of second channels 62B1, 62B2 continuous with the first channel 62A, however, the present invention is not limited thereto. The exhaust mechanism may be configured to include the first channel 62A and a single second channel, which is continuous with the first channel 62A and extends in the radial direction of the cylindrical portion 63, and, for example, when the number of the terminals 2 is one or two, three or more second channels may be provided.

[0069] In addition, the best configuration, method, etc. for implementing the present invention have been disclosed in the above description, however, the present invention is not limited thereto. That is, although the present invention has been specifically shown and described mainly with respect to a specific embodiment, a person of ordinary skill in the art may apply various modifications to the above-mentioned embodiments in specific configurations such as shape, material, quantity, etc. without departing from the scope of the spirit and purpose of the present invention. Therefore, the description of the limitation of its shape, material, etc. disclosed above is provided as an example to facilitate understanding of the present invention, and does not limit the present invention, so that the description of the name of the component excluding some or all of the limitations on its shape, material, etc. is included in the scope of the present invention.

Claims

1. A sealing assembly, comprising: A terminal holding portion (20), the terminal holding portion (20) comprising: Plate-shaped terminals (2), an embedded portion (61) in which a portion of the terminal (2) is embedded; and a cylindrical portion (63) provided to be continuous with the embedded portion (61) so as to surround the terminal (2); and an annular seal (5) which is inserted to surround the terminal (2) from the outside and seal the internal space (S) of the cylindrical portion (63), The embedded portion (61) is provided with an exhaust mechanism (62), which is configured to exhaust air on the insertion direction side (Y2) of the seal (5) in the internal space (S) to the outside.

2. The seal assembly according to claim 1, in, The exhaust mechanism (62) comprises: a first passage (62A) which is provided with one end (62Af) communicating with the internal space and extends in a direction away from the sealing member (5); and a second channel (62B1, 62B2) extending in the radial direction of the cylindrical portion (63) and continuous with the other end (62Ab) of the first channel (62A), and The second passages (62B1, 62B2) are provided in pair to clamp the terminal (2) on both sides in the radial direction.

3. A manufacturing device (10) for manufacturing the sealing assembly according to claim 2, the manufacturing device (10) comprising: A mold for inserting the terminal (2) to mold the terminal holding portion (20); A first insert (11), the first insert (11) being used to form the first channel (62A), and the terminal (2) being inserted into the first insert (11); as well as a pair of second inserts (12A1, 12A2), the pair of second inserts (12A1, 12A2) being used to form a pair of the second channels (62B1, 62B2), The pair of second inserts (12A1, 12A2) are configured as rods, and The first insert (11) is constructed to include: a cylindrical first insert body (110) into which the terminal (2) can be inserted; and A pair of insertion holes (111, 111) are provided in the first insert body (110), and the pair of second inserts (12A1, 12A2) are respectively inserted into the pair of insertion holes (111, 111).

4. The manufacturing device (10) according to claim 3, wherein: The pair of insertion holes (111, 111) are provided at positions facing each other in a direction (Z) orthogonal to an axis of the first insert body (110).

5. The manufacturing device (10) according to claim 4, wherein: The pair of insertion holes (111, 111) are provided at a central portion in a width direction (X) perpendicular to the axis of the first insert body (110).

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