JP2014137895A - Connector connection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector connection structure which can suppress disconnection of the cable core wire due to tension or vibration acting on the cable when connecting the cable with a fusible link, or can suppress wear of the mutual contacts of a terminal fitting at the connector connection part.SOLUTION: A cable side connector 30 includes a terminal housing part 31 for housing a terminal fitting 33 connected with the end of a cable 20, and a cable end housing part 34 for housing a part 21 at the end of the cable 20 covered with a coat. The connector part 11 of a fusible link unit to which the cable side connector 30 is fitted and connected includes a fitting cylindrical part 11a into which the terminal housing part 31 of the cable side connector 30 is inserted. End of the cable 20 is supported elastically in the cable end housing part 34 by means of a rubber plug 61, and the terminal housing part 31 is supported elastically in the fitting cylindrical part 11a by means of a tubular packing 62.

Description

  The present invention relates to a connector connection structure for connecting a cable to a fusible link attached to an in-vehicle battery.

  As a connection structure of an in-vehicle electrical component to a vehicle battery, the in-vehicle electrical component is connected to the battery via a battery terminal fixed to the battery post of the battery and a fusible link connected to the battery terminal. The structure is widespread.

  In the fusible link, as disclosed in Patent Document 1 below, a connection portion with an in-vehicle electrical component is usually disposed at a position far from the battery terminal.

JP 2003-139803 A

  By the way, the support structure for the battery of the fusible link is often a cantilever structure via the battery terminal, and the connection portion with the in-vehicle electrical component arranged at a position far from the battery terminal is likely to be vibrated. .

  Therefore, when connecting a cable from an in-vehicle electrical component to a fusible link, if the core wire of the cable is thin, there is a concern about disconnection of the core wire due to tension or vibration acting on the cable. In addition, there is a strong demand for a device for preventing the contact wear between the terminal fittings of the connector connection portion from increasing due to the tension and vibration acting on the cable, thereby causing the wear of the contact to proceed.

  Accordingly, an object of the present invention is to solve the above problems, and in a connector connection structure in which a cable is connected to a fusible link attached to an in-vehicle battery, the cable core wire is disconnected due to tension or vibration acting on the cable. It is an object of the present invention to provide a connector connection structure that can be suppressed and that the contact between the terminal fittings of the connector connection portion can be prevented from being worn.

The above-described object of the present invention is achieved by the following configuration.
(1) A connector connection structure that fits and connects a connector part equipped in a fusible link unit attached to a vehicle-mounted battery and a cable side connector connected to a cable,
The cable-side connector includes a terminal accommodating portion that accommodates a terminal fitting connected to an end portion of the cable, and a cable end accommodating portion that accommodates a portion covered by an outer cover of the end portion of the cable,
The connector portion includes a fitting tube portion into which a terminal accommodating portion of the cable side connector is inserted,
The end portion of the cable inserted into the cable end accommodating portion has a rubber plug whose inner periphery closely fits to the end of the cable and whose outer periphery closely fits to the inner periphery of the cable end accommodating portion. , Elastically supporting the cable end accommodating portion,
The terminal accommodating part inserted into the fitting cylinder part has a cylindrical packing in which an inner periphery closely fits to an outer periphery of the terminal accommodating part and an outer periphery closely fits to an inner periphery of the fitting cylinder part Thus, the connector connecting structure is characterized in that it is elastically supported by the fitting tube portion.

  According to the configuration of (1) above, when the cable side connector is fitted and connected to the connector portion of the fusible link, the cable end portion is tightly fitted to the cable end housing portion of the cable side connector. A rubber plug regulates the movement of the cable. Therefore, it can suppress that the core wire of a cable breaks with the tension | tensile_strength which acts on a cable.

  Further, the rubber plug alleviates transmission of tension and vibration acting on the cable to the cable side connector. Furthermore, a cylindrical packing that fits tightly between the terminal accommodating portion of the cable-side connector and the fitting cylindrical portion of the connector portion of the fusible link unit that are fitted to each other includes the terminal accommodating portion and the fitting cylindrical portion. Demonstrates a vibration control action that suppresses relative vibration between the two.

  For this reason, it is possible to prevent the contact between the terminal fittings of the connector connecting portion from being worn by tension or vibration acting on the cable, and to improve the vibration resistance of the connector connecting portion in the fusible link unit.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

  According to the connector connection structure of the present invention, in the connector connection structure in which a cable is connected to a fusible link attached to an in-vehicle battery, the contact between the terminal fittings of the connector connection portion is worn by tension or vibration acting on the cable. Can be deterred.

FIG. 1 is a perspective view of an embodiment of a connector connection structure in a fusible link according to the present invention. FIG. 2 is a longitudinal sectional view of the connector connection structure in the fusible link shown in FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a connector connection structure according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view of an embodiment of a connector connection structure in a fusible link according to the present invention, and FIG. 2 is a longitudinal sectional view of the connector connection structure in the fusible link shown in FIG.

  The connector connection structure of this embodiment is a connector connection for fitting and connecting a resin-made connector portion 11 provided in the fusible link unit 10 and a cable-side connector 30 connected to a cable 20 of an in-vehicle electrical component. Structure.

  As shown in FIG. 1, the fusible link unit 10 is screwed to a stud bolt 41 of the battery terminal 40 to be in a conductive state with the battery terminal 40. The battery terminal 40 has a post fixing portion 42 that is fixed to a battery post of a vehicle-mounted battery. That is, the fusible link unit 10 is attached to the upper part of the in-vehicle battery via the battery terminal 40.

  The fusible link unit 10 includes a resin-made housing 12 integral with the connector portion 11 and a terminal-connecting plate portion made of a metal plate connected to the stud bolt 41 of the battery terminal 40 and a circuit-connecting plate portion for connecting an additional circuit. 14a and 14b are supported.

  Further, the housing 12 of the fusible link unit 10 of the present embodiment is equipped with a fuse mounting portion 15. The fuse mounting unit 15 is mounted with a blade-type fuse 50. The blade-type fuse 50 electrically connects the terminal connection plate portion connected to the battery terminal 40 and the male terminal fitting 16 (see FIG. 2) in the connector portion 11, and when a current exceeding the rating flows. By fusing, the external circuit connected to the connector part 11 is protected.

  As shown in FIG. 2, the connector portion 11 provided in the fusible link unit 10 includes a fitting cylinder portion 11 a into which the terminal accommodating portion 31 of the cable side connector 30 is inserted. A male terminal fitting 16 connected to the blade-type fuse 50 is disposed in the fitting cylinder portion 11a.

  As shown in FIG. 2, the cable-side connector 30 to be fitted and connected to the connector portion 11 includes a terminal accommodating portion 31 that accommodates a female terminal fitting 33 connected to the end portion of the cable 20, and an outside of the end portion of the cable 20. And a cable end accommodating portion 34 for accommodating the portion 21 covered with the covering.

  In the connector connection structure of this embodiment, the end portion of the cable 20 inserted into the cable end housing portion 34 is elastically supported by the cable end housing portion 34 by the rubber plug 61.

  As shown in FIG. 2, the rubber plug 61 is tightly fitted to the portion 21 whose inner periphery 61 a is covered with the outer cover of the end portion of the cable 20, and the outer periphery 61 b is the inner periphery of the cable end accommodating portion 34. The end portion of the cable 20 is elastically supported by the cable end accommodating portion 34 by being closely fitted to each other.

  Moreover, in the connector connection structure of this embodiment, as shown in FIG. 2, the terminal accommodating part 31 inserted in the fitting cylinder part 11a is elastically supported by the fitting cylinder part 11a by the cylindrical packing 62. As shown in FIG.

  The cylindrical packing 62 has an inner periphery 62a closely fitted to the outer periphery of the terminal accommodating portion 31 and an outer periphery 62b closely fitted to the inner periphery of the fitting cylindrical portion 11a, so that the terminal accommodating portion 31 is fitted. It is elastically supported by the joint tube portion 11a.

  In the connector connection structure of the embodiment described above, in the state where the cable side connector 30 is fitted and connected to the connector portion 11 of the fusible link, the end portion of the cable 20 and the cable end accommodating portion 34 of the cable side connector 30 are connected. The rubber plug 61 tightly fitted to each other regulates the movement of the cable 20. Therefore, disconnection of the core wire of the cable 20 due to the tension acting on the cable 20 can be suppressed.

  In addition, the rubber plug 61 alleviates transmission of tension and vibration acting on the cable 20 to the cable-side connector 30.

  Further, a cylindrical packing 62 tightly fitted between the terminal accommodating portion 31 of the cable-side connector 30 and the fitting cylindrical portion 11a of the connector portion 11 of the fusible link unit 10 is connected to the terminal accommodating portion 31. Demonstrates a damping action that suppresses relative vibration with the fitting cylinder portion 11a.

  Therefore, it is possible to prevent the contact between the terminal fittings of the connector connecting portion from being worn by tension or vibration acting on the cable 20, and to improve the vibration resistance of the connector connecting portion in the fusible link unit 10.

  Further, in the connector connection structure of the present invention, the rubber plug 61 and the cylindrical packing 62 are provided, so that the water intrusion into the connector portion 11 can be prevented and the occurrence of inconvenience due to the water can be prevented.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  Here, the features of the above-described embodiment of the connector connection structure according to the present invention will be briefly summarized in [1] below.

[1] Connector connection for fitting and connecting the connector portion (11) equipped in the fusible link unit (10) attached to the vehicle battery and the cable side connector (30) connected to the cable (20) Structure,
The cable-side connector (30) covers a terminal accommodating portion (31) for accommodating a terminal fitting (33) connected to an end portion of the cable (20), and an outer sheath of the end portion of the cable (20). A cable end accommodating portion (34) for accommodating the broken portion (21),
The connector part (11) includes a fitting cylinder part (11a) into which the terminal accommodating part (31) of the cable side connector (30) is inserted,
The end portion of the cable (20) inserted into the cable end accommodating portion (34) has an inner periphery (61a) closely fitted to an end portion of the cable (20) and an outer periphery (61b) of the cable (20). By means of a rubber plug (61) that fits tightly into the inner periphery of the end receiving part (34), the cable end receiving part (34) is elastically supported,
The terminal accommodating part (31) inserted into the fitting cylindrical part (11a) has an inner periphery (62a) tightly fitted to an outer periphery of the terminal accommodating part (31) and an outer periphery (62b) of the fitting part (31a). A connector connection structure characterized in that the fitting cylinder part (11a) is elastically supported by a cylindrical packing (62) which is closely fitted to the inner periphery of the joint cylinder part (11a).

DESCRIPTION OF SYMBOLS 10 Fusible link unit 11 Connector part 11a Fitting cylinder part 20 Cable 30 Cable side connector 31 Terminal accommodating part 33 Female terminal metal fitting (terminal metal fitting)
34 Cable end accommodating portion 40 Battery terminal 61 Rubber plug 61a Inner circumference 61b Outer circumference 62 Cylindrical packing 62a Inner circumference 62b Outer circumference

Claims (1)

It is a connector connection structure for fitting and connecting a connector part equipped in a fusible link unit attached to an in-vehicle battery and a cable side connector connected to a cable,
The cable-side connector includes a terminal accommodating portion that accommodates a terminal fitting connected to an end portion of the cable, and a cable end accommodating portion that accommodates a portion covered by an outer cover of the end portion of the cable,
The connector portion includes a fitting tube portion into which a terminal accommodating portion of the cable side connector is inserted,
The end portion of the cable inserted into the cable end accommodating portion has a rubber plug whose inner periphery closely fits to the end of the cable and whose outer periphery closely fits to the inner periphery of the cable end accommodating portion. , Elastically supporting the cable end accommodating portion,
The terminal accommodating part inserted into the fitting cylinder part has a cylindrical packing in which an inner periphery closely fits to an outer periphery of the terminal accommodating part and an outer periphery closely fits to an inner periphery of the fitting cylinder part Thus, the connector connecting structure is characterized in that it is elastically supported by the fitting tube portion.

Images