JP2005044579A - Waterproof fitting for cable connection - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof fitting for cable connection which can carry out waterproofing treatment of the cable connection part simply and with a minimum working space, and can maintain a waterproofing function against the external force. <P>SOLUTION: The waterproof fitting is provided with a case body in which a case half body that has a partition member for partitioning into a cable connection part housing recess and an elastic member installation recess positioned around the cable connection part housing recess, and a cut-out part for clipping the cables, is capable of becoming a pair and mutually closing together and an elastic member which has an aperture for engagement in the center and is installed in the elastic member installation recess by fitting the above partition member with this engagement aperture, and has around this engagement aperture the abutting face for abutting mutually, with the pair of case half bodies closed together. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waterproof device that can be waterproofed by being attached to a cable connecting portion.
[0002]
[Prior art]
[Patent Document 1] Japanese Utility Model Laid-Open No. 4-61869 [Patent Document 2] Japanese Patent Application Laid-Open No. 11-154556 A connection portion of a coaxial cable or a connection portion between a connector of a device and the coaxial cable is a self-bonding tape. (Butyl rubber-based tape) was wound, and further, a protective tape (vinyl tape or polyethylene tape) was wound thereon to provide a waterproof treatment.
[0003]
However, since the above-mentioned cable connection portion has a step, the conventional waterproofing work using a tape requires a technique and takes time. In addition, it is necessary to design a device by securing a sufficient space for connecting the connector (receptacle) and the coaxial cable, which hinders downsizing of the device. In addition, when a malfunction occurs in the equipment and the tape shield part of the connection part between the connector (receptacle) and the coaxial cable is opened, it takes time to work, and tools such as scissors are required. Had the problem of risk of tool dropping.
Therefore, in order to simplify the waterproof treatment of the connection portion between the connector (receptacle) of the device and the coaxial cable, a device that covers the connection portion with a flexible cylindrical member (Patent Document 1). An instrument (Patent Document 2) has been developed in which a connection portion is covered with a bellows-shaped waterproof cover.
[0004]
[Problems to be solved by the invention]
However, the conventional waterproofing apparatus needs to be previously attached to the connector portion of the device, and there are cases where restrictions are imposed on the device and the connector side. Moreover, it cannot be used for the connection part between coaxial cables, and there was a problem that versatility was low. Furthermore, the cylindrical member and the bellows-shaped waterproof cover have a problem that they have a low mechanical strength and may be damaged by an external force.
The present invention has been made in view of such circumstances, and can easily perform waterproofing processing of a cable connection portion in a minimum work space and maintain a waterproof function against external force. An object of the present invention is to provide a waterproof device for a cable connection portion that can be used.
[0005]
[Means for Solving the Problems]
In order to achieve such an object, the present invention provides a case body composed of a pair of case halves that can be closed to each other in a state in which the cable connection portion is housed, and an elastic member attached to each case half. The case half has a partition member for partitioning the inside of the case half into a cable connection portion storage recess and an elastic member mounting recess located around the case half, and a notch for holding the cable The elastic member has an engagement opening in the center, and is fitted into the elastic member mounting recess so as to fit the partition member in the engagement opening, and the pair of case halves are closed. The contact surfaces that contact each other in the state are provided around the opening for engagement.
[0006]
As another aspect of the present invention, the pair of case halves are configured so as to be openable and closable via a hinge portion.
As another aspect of the present invention, the elastic member mounted on at least one of the case halves is configured to have a bead portion on the contact surface.
As another aspect of the present invention, the elastic member is configured to have a notch portion for holding the cable corresponding to the notch portion for holding the cable of the half case on the contact surface.
As another aspect of the present invention, the elastic member is configured to have the bead portion in a notch portion for holding a cable.
As another aspect of the present invention, the case half is configured to be a carbon black-containing polypropylene resin molding.
As another aspect of the present invention, the elastic member is configured such that the hardness in JIS K6253 spring type A is in the range of 0-30.
[0007]
In the present invention as described above, by engaging the pair of case halves with the cable connection portion housed in the cable connection portion housing recess, the cable connection portion is shielded from the outside by the pair of elastic members. Placed under dense conditions.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
1 is a plan view showing an embodiment of a waterproof device for a cable connecting portion of the present invention, FIG. 2 is a cross-sectional view taken along the line II-II of the waterproof device shown in FIG. 1, and FIG. 1 is a side view of a waterproof device shown in FIG. 1 to 3, a waterproof device 1 according to the present invention includes a case body 11 composed of a pair of case halves 12 and 13, and elastic members 21 attached to the case halves 12 and 13 of the case body 11. 21 is provided.
4 is a perspective view of the case half 12 of the waterproof device 1 shown in FIG. 1, and FIG. 5 is a case body 11 of the waterproof device 1 shown in FIG. 1 (with the elastic members 21 and 21 removed). FIG. 6 is a perspective view of the elastic member 21 attached to the waterproof device 1 shown in FIG.
[0009]
The case halves 12 and 13 constituting the case body 11 are connected via a hinge part 14 so as to be opened and closed.
The inside of the case half 12 is partitioned into an elastic member mounting recess 16 and a cable connection portion storage recess 17 by a partition member 15. Further, notches 12A and 12B for holding the cable are provided at both ends in the axial direction of the case half 12 (in the direction of arrow a in FIGS. 1 and 5), and both ends in the axial direction of the partition member 15 are also provided. Cutout portions 15A and 15B for holding the cable are provided. The cutout portion 12A and the cutout portion 15A are concentric semicircular cutouts, and the cutout portion 12B and the cutout portion 15B are also concentric semicircular cutouts. In the illustrated example, the notch 12A and the notch 15A are larger than the notch 12B and the notch 15B. Further, an engagement receiving portion 18 having an insertion hole for engagement is provided at an end side portion of the case half body 12 facing the hinge portion 14.
[0010]
The case half 13 has a symmetrical shape with respect to the case half 12 and the hinge portion 14 described above. That is, a partition member 15 is provided inside the case half 13, and the partition member 15 partitions the inside of the case half 13 into an elastic member mounting recess 16 and a cable connection portion storage recess 17. Cable clamping notches 13A and 13B are provided at both ends of the case half 13 in the axial direction (the direction of arrow a in FIGS. 1 and 5), and the cable clamping is also provided at both ends of the partition member 15 in the axial direction. Notches 15A and 15B are provided. The cutout portion 13A and the cutout portion 15A are concentric semicircular cutouts, and the cutout portion 13B and the cutout portion 15B are also concentric semicircular cutouts. In the illustrated example, the notch 13A and the notch 15A are larger than the notch 13B and the notch 15B. Further, an engaging claw portion 19 is provided on an end side portion of the case half 13 that faces the hinge portion 14.
[0011]
As shown in FIG. 7, the case halves 12 and 13 can be closed by folding each other around the hinge portion 14. In the closed state, the cables of the case halves The connecting portion storage recess 17 faces to form a space for storing the cable connecting portion. Further, the notch 12A and the notch 15A form a circular opening for holding the cable so as to face the notch 13A and the notch 15A, respectively, and the notch 12B and the notch 15B respectively A circular opening for holding the other cable is formed facing the notch 13B and the notch 15B. The engaged state of the case halves 12 and 13 can be maintained by inserting and locking the engaging claw portion 19 into the insertion hole of the engagement receiving portion 18.
[0012]
Such case halves 12 and 13 desirably have high weather resistance, particularly resistance to ultraviolet rays, and high durability against external forces. For example, polypropylene resins containing carbon black, cross-linked polyethylene resins, and hard vinyl chloride. It can be molded using resin, polyester resin, polystyrene resin, polyacetal resin, ABS resin or the like.
[0013]
The elastic member 21 constituting the case body 11 has an engaging opening 22 in the center, and the partition members 15 are fitted into the engaging opening 22 so that the elastic portions 21 and 13 are elastic. It is mounted in the member mounting recess 16. The elastic member 21 has an abutment surface 23 around the engagement opening 22 that abuts each other in a state where the pair of case halves 12 and 13 are closed. Further, in the illustrated example, the cable clamping notches 12A and 13A corresponding to the cable clamping notches 12A and 13A of the half case are provided at both ends in the axial direction of the elastic member 21 (the direction of arrow a in FIGS. 1 and 6). A portion 24A and a notch portion 24B for holding the cable corresponding to the notch portions 12B and 13B for holding the cable of the half case are formed. And it has the bead part 25 in the contact surface 23 containing notch part 24A, 24B for cable clamping.
[0014]
Such an elastic member 21 has the contact surfaces 23 of the elastic members 21 attached to the case halves in contact with each other in the state where the case halves 12 and 13 are closed as described above, and the cable. The notch portions 24A and 24B for clamping hold the cable. Thereby, the space for storing the cable connection part formed so that the cable connection part storage recesses 17 of the case halves face each other is in a liquid-tight state, and a high waterproof function is exhibited. In particular, by forming the bead portion 25 on the elastic member 21 as described above, the bead portions 25 facing each other are pressure-bonded and the bead portions 25 are pressure-bonded to the cable. Obtainable.
[0015]
The elastic members 21 and 21 preferably have such a hardness that the contact surface 23 is pressed and deformed to achieve a high liquid-tight state. For example, the hardness in the JIS K6253 spring type A is 0. Materials in the range of ~ 30, preferably 0-15 can be used. Examples of such a material include ethylene propylene rubber, silicon rubber, isobutylene isoprene rubber, butadiene rubber, and any mixture thereof. After adding additives such as a vulcanizing agent and a vulcanization accelerator to such a rubber material, the elastic member 21 is formed by kneading with a kneader and molding and vulcanizing the resulting rubber mixture into a predetermined shape. Can be produced. Examples of the vulcanizing agent to be used include sulfur, peroxides, quinoids, resins such as alkylphenol / formaldehyde resins and alkylphenol / sulfide resins (for example, trade name Tacrol, trade name Sumilite Resin) and the like. It can be selected appropriately according to the rubber material. Moreover, thiourea type, guanidine type, thiazole type, sulfenamide type, thiuram type, dithiocarbamate type and the like can be used as a vulcanization accelerator. The rubber mixture may contain an anti-aging agent, an organic fatty acid such as stearic acid, and a filler such as carbon black as necessary. Such an additive is preferably contained in the range of 5 to 250 parts by weight with respect to 100 parts by weight of the rubber material.
[0016]
Next, the use state of the waterproof device 1 for the cable connecting portion of the present invention will be described.
FIG. 8 is a diagram showing a case where the waterproofing device 1 of the present invention is attached to the connecting portion 53 of the coaxial cables 51 and 52 having different diameters to perform waterproofing. The case body 11 is arranged in the connection portion 53 of the coaxial cables 51 and 52 so that the connection portion 53 is stored in the cable connection portion storage recess 17 of the case halves 12 and 13. Thereafter, the case halves 12 and 13 are folded around the hinge portion 14 so as to be closed, the engaging claw portion 19 is inserted and locked into the insertion hole of the engagement receiving portion 18, and the waterproof device 1 is mounted. As a result, the pair of elastic members 21 and 21 attached to the case halves 12 and 13 come into contact with each other at the contact surface 23, and the elastic members 21 and 21 are crimped to the coaxial cables 51 and 52 to connect the cables. The inside of the part housing recess 17 is made liquid-tight. Therefore, waterproofing of the cable connection portion 53 is extremely simple. Moreover, since the elastic members 21 and 21 are protected by the case body 11 including the pair of case halves 12 and 13, the waterproof function can be stably maintained against external force.
[0017]
FIG. 9 is a view showing a state in which the waterproof device 1 of the present invention is attached to the connection portion 67 between the connector (receptacle) 61 of the device and the coaxial cable 65. In the illustrated example, the connector 61 disposed on the chassis 60 of the device does not have a large space between the other surfaces of the chassis 60, and when the coaxial cable 65 is connected, waterproof work using a conventional tape is performed. Is difficult to do. However, the working space required for the closing operation so that the connection portion 67 is accommodated in the pair of case halves 12 and 13 of the waterproof device 1 of the present invention is sufficiently secured even in the illustrated example. Therefore, by using the waterproof device 1 of the present invention, it is possible to perform waterproofing in a minimum work space. Further, when a malfunction occurs in the device and the connection between the connector 61 and the coaxial cable 65 is released, the waterproof device 1 can be easily removed by removing the engagement claw portion 19 from the insertion hole of the engagement receiving portion 18. .
[0018]
The waterproof device described above is an embodiment, and the present invention is not limited to this. For example, the above-described case halves 12 and 13 may be independent and separate case halves 12 and 13 without being connected via a hinge portion as shown in FIG. In this case, engagement receiving portions 18 and 18 each having an insertion hole for engagement are provided on the opposite end portion of one case half 12, and the opposite end portion of the other case half 13 is provided on the opposite end portion. The engaging claw portions 19 can be provided. Thus, the case halves 12 and 13 are opposed and closed so as to accommodate the cable connection portion, and the engaging claw portion 19 is inserted and locked into the insertion hole of the engagement receiving portion 18 to thereby secure the waterproof device 1. Can be installed.
[0019]
In addition, the shape of the case halves 12 and 13 constituting the case body 11, the dimensions of each part such as the partition member 15, the shapes and dimensions of the elastic members 21 and 21, etc. are the shape and dimensions of the cable connection part to be waterproofed. It can set suitably according to etc. For example, although the shape of the partition member 15 is a corridor shape in the illustrated example, if the inside of the case half can be partitioned into the elastic member mounting recess 16 and the cable connection portion storage recess 17 and the elastic member 21 can be mounted and held. The shape is not particularly limited. Further, the shapes of the engagement receiving portion 18 and the engagement claw portion 19 are not limited to the illustrated example, and further, the outer peripheral portion of the waterproof device of the present invention, which is accommodated by closing the cable connection portion, is tightened by a fastener such as a belt. It may be sealed.
[0020]
Moreover, in the above-mentioned example, the case half body 12 and the case half body 13 have the cable connection part accommodation recessed part 17 of the same magnitude | size (depth). The present invention is not limited to this. For example, the case half body 12 and the case half body 13 have different sizes (depths), for example, the case half body 12 has a large (deep) cable connection portion housing recess, and the case half body 13 is small ( (Shallow) The cable connecting portion housing recess is provided, and the size of the closed portion may be the same as that of the waterproof device 1 described above.
[0021]
【The invention's effect】
As described above in detail, according to the present invention, a pair of case halves are closed and attached in a state where the cable connection portion is housed in the cable connection portion housing recess, so that a pair attached to each case half is attached. Since the elastic member of the cable contacts the contact surface to make the inside of the cable connection portion storage recess liquid-tight, the waterproof processing of the cable connection portion is simplified, and it is necessary for closing the pair of case halves. It is possible to perform waterproofing in a minimum work space, without hindering downsizing of the equipment, and furthermore, the elastic member is protected by the case body consisting of a pair of case halves, so In contrast, the waterproof function can be maintained stably, and it can be used for any connection between cables and between cable and connector (receptacle). That.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a waterproof device for a cable connecting portion of the present invention.
2 is a cross-sectional view taken along the line II-II of the waterproof device shown in FIG.
3 is a side view of the waterproof device shown in FIG. 1. FIG.
4 is a perspective view of one case half of the waterproof device shown in FIG. 1. FIG.
5 is a plan view of a case body (with an elastic member removed) of the waterproof device shown in FIG. 1. FIG.
6 is a perspective view of an elastic member attached to the waterproof device shown in FIG. 1. FIG.
FIG. 7 is a perspective view showing a state in which case halves are folded and closed together at the center of a hinge portion.
FIG. 8 is a diagram showing a case where waterproofing processing is performed by attaching the waterproofing instrument of the present invention to the cable connecting portion.
FIG. 9 is a view showing a state in which the waterproof device of the present invention is attached to the connection portion between the connector of the device and the coaxial cable.
FIG. 10 is a side view corresponding to FIG. 3 showing another embodiment of the waterproof device for a cable connecting portion of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Waterproofing apparatus 11 for cable connection parts ... Case body 12, 13 ... Case half body 12A, 12B, 13A, 13B ... Notch part 14 for cable clamping ... Hinge part 15 ... Partition member 15A, 15B ... For cable clamping Notch 16 ... elastic member mounting recess 17 ... cable connecting part storage recess 18 ... engagement receiving part 19 ... engagement claw part 21 ... elastic member 22 ... engagement opening 23 ... contact surfaces 24A, 24B ... cable Notch portion 25 for sandwiching ... Bead portions 51, 52, 65 ... Coaxial cables 53, 67 ... Cable connecting portion 60 ... Chassis 61 ... Connector (receptacle)

Claims (7)

A case body composed of a pair of case halves that can be closed together with the cable connection portion stored therein, and an elastic member attached to each case half body,
The case half has a partition member for partitioning the inside of the case half into a cable connection portion storage recess and an elastic member mounting recess located around the case half, and a notch for holding the cable,
The elastic member has an engagement opening in the center, and is mounted in the elastic member mounting recess so as to fit the partition member in the engagement opening, and a pair of case halves are closed A waterproof device for a cable connecting portion, characterized in that it has contact surfaces that contact each other at the periphery of the opening for engagement. The waterproof device for a cable connecting portion according to claim 1, wherein the pair of case halves are connected to each other through a hinge portion so as to be opened and closed. The waterproof device for a cable connecting portion according to claim 1 or 2, wherein the elastic member mounted on at least one case half has a bead portion on the contact surface. The said elastic member has the notch part for cable clamping corresponding to the notch part for cable clamping of the said case half body in the said contact surface, The any one of Claim 1 thru | or 3 characterized by the above-mentioned. Waterproof device for cable connection as described. The waterproofing device for a cable connection part according to claim 4, wherein the elastic member has the bead part also in a notch part for holding a cable. 6. The waterproof device for a cable connecting portion according to claim 1, wherein the case half is a carbon black-containing polypropylene resin molding. The waterproofing device for a cable connection part according to any one of claims 1 to 6, wherein the elastic member has a hardness in a range of 0 to 30 according to JIS K6253 spring type A.

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