connector

Abstract

A connector includes an electric wire, a terminal connected to the electric wire, a housing having an accommodation space that accommodates a connection portion of the electric wire and the terminal, a sealing member that seals an opening portion of the accommodation space to isolate the connection portion accommodated in the accommodation space from the outside, and a heat accumulating member that is located inside the accommodation space.

Description

Technical Field

[0001] The present invention relates to a connector comprising a wire, a terminal, a housing accommodating the connection between the wire and the terminal, a sealing component sealing the opening of the accommodating space, and a heat storage component disposed within the accommodating space. Background Technology

[0002] In the prior art, in order to supply (charge) electricity from outside the vehicle to the battery installed in a vehicle such as an electric vehicle or a plug-in hybrid vehicle, a charging connector has been proposed that is installed in the vehicle (see, for example, Patent Document 1). This type of connector is also commonly referred to as a charging socket.

[0003] For detailed information about the connectors mentioned above, please refer to patent document JP2019-192482A.

[0004] The connectors (charging sockets) described above typically require structures and characteristics specified by various standards. For example, when these connectors are actually used, the temperature of the terminals (the so-called operating temperature) rises due to Joule heat generated in the terminals when power is applied. Therefore, from the perspective of connector quality maintenance, safety, etc., the upper limit of the operating temperature of the terminals, etc., is limited by predetermined standards.

[0005] However, in the aforementioned connectors of the prior art, the connection between the terminal and the wire is the part that generates a large amount of heat due to the large contact resistance, and from the perspective of waterproofing, the connection is sealed and isolated from the outside by seals or the like. Furthermore, the air in such an isolated space also acts as an insulating material. Therefore, it is considered extremely difficult to dissipate heat from the connection between the terminal and the wire to the outside. Additionally, for example, in the case of fast battery charging, because a large current passes through the connector in a short time, the temperature rise of the terminal (especially the aforementioned connection) per unit time is greater than in the case of normal charging. Therefore, in the prior art connectors, it may be difficult to maintain the operating temperature of the terminal within the standard-specified range solely through natural heat dissipation.

[0006] On the other hand, it is not ideal to easily assemble heat dissipation components (e.g., metal plates, etc.) to the outside of the connector, as this hinders the miniaturization of the connector and limits the installation space of the connector in the vehicle body. Summary of the Invention

[0007] A non-limiting aspect of this disclosure relates to providing a connector that prevents excessive increases in terminal operating temperature while avoiding an increase in connector size.

[0008] Aspects of specific, non-limiting embodiments of this disclosure relate to the features discussed above and / or other features not described above. However, aspects of non-limiting embodiments do not need to relate to the foregoing features, and aspects of non-limiting embodiments of this disclosure may not relate to the foregoing features.

[0009] According to one aspect of the present invention, a connector is provided, comprising:

[0010] electric wire;

[0011] A terminal that is connected to the wire;

[0012] A housing having a receiving space for accommodating the connection portion of the wire and the terminal;

[0013] A sealing component that seals the opening of the receiving space to isolate the connection portion received in the receiving space from the outside; and

[0014] A heat storage component, which is located within the accommodating space. Attached Figure Description

[0015] Exemplary embodiments of the present invention will be described in detail with reference to the following figures, wherein:

[0016] Figure 1 This is a perspective view showing the state of connection between the connector and the wire according to a first embodiment of the present invention.

[0017] Figure 2 yes Figure 1 The front view of the connector shown.

[0018] Figure 3 This shows that it will constitute Figure 1 A perspective view of some of the components of the connector shown, after disassembly.

[0019] Figure 4 This is a perspective view showing an assembly with a base retainer and a rear retainer mounted on a pair of terminals connected to a pair of wires.

[0020] Figure 5 It is shown Figure 4 The diagram shows the assembly after it has been disassembled.

[0021] Figure 6 It is along Figure 2 The cross-sectional view taken from line AA.

[0022] Figure 7 yes Figure 6 An enlarged view of part B in the image.

[0023] Figure 8It is the same as in the second embodiment. Figure 7 The corresponding view.

[0024] Figure 9 It is the same as in the third embodiment. Figure 7 The corresponding view.

[0025] Figure 10 It is the same as in the fourth embodiment. Figure 7 The corresponding view.

[0026] Figure 11 This is a perspective view showing the heat storage component used in the fifth embodiment.

[0027] Figure 12 It is the same as in the fifth embodiment. Figure 7 Corresponding view (heat sink not shown).

[0028] Figure 13 It is along Figure 12 The cross-sectional view taken from line CC.

[0029] Figure 14 It is a variation of the fifth embodiment with the edge Figure 13 The cross-sectional view corresponding to the cross-sectional view cut by line DD.

[0030] Figure 15 This is a perspective view showing the heat transfer component used in the sixth embodiment.

[0031] Figure 16 In the sixth embodiment, and Figure 7 Corresponding view (heat sink not shown).

[0032] Figure 17 In the seventh embodiment, and Figure 7 Corresponding view (heat sink not shown).

[0033] Figure 18 This is a perspective view showing the heat transfer components used in the eighth and ninth embodiments.

[0034] Figure 19 It is the same as in the eighth and ninth embodiments. Figure 7 Corresponding view (heat sink not shown).

[0035] Figure 20 This is a perspective view showing the terminal to which the wire is connected, as used in the tenth embodiment.

[0036] Figure 21 In the tenth embodiment, and Figure 7 Corresponding view (heat sink not shown).

[0037] Figure 22 yes Figure 21An enlarged view of part E.

[0038] Figure 23 This is a perspective view showing the heat storage component used in the eleventh embodiment.

[0039] Figure 24 In the eleventh embodiment, and Figure 7 Corresponding view (heat sink not shown).

[0040] Figure 25 yes Figure 24 An enlarged view of part F.

[0041] Figure 26 This is a perspective view showing the heat storage component, seal, and rear retainer used in the twelfth embodiment.

[0042] Figure 27 It is in the twelfth embodiment with Figure 7 Corresponding view (heat sink not shown). Detailed Implementation

[0043] First Embodiment

[0044] In the following description, a connector 1 according to a first embodiment of the present invention will be described with reference to the accompanying drawings. Connector 1 is a connector that is installed in a vehicle such as a plug-in hybrid vehicle or an electric vehicle and connects to a wire extending from a battery installed in the vehicle. Connector 1 is also referred to as a charging socket. This is achieved by mating a mating connector (so-called a charging gun) into the mating recess 63 of connector 1 (see...). Figure 1 In some systems (such as those used in vehicles), power is supplied to the battery from outside the vehicle to charge it.

[0045] For ease of description, the terms "front-back direction", "width direction", "vertical direction", "up", "down", "front", and "back" will be used as follows: Figure 1 The terms "front-back direction", "width direction", and "vertical direction" are defined as shown. The "front-back direction", "width direction", and "vertical direction" are orthogonal to each other. The front-back direction is consistent with the mating direction of connector 1 and mating connector (not shown), and the front side (the side closer to the mating connector) in the mating direction when viewed from connector 1 is called the "front side", and the release side (the side away from the mating connector) in the mating direction when viewed from connector 1 is called the "rear side".

[0046] like Figure 1 , 6 As shown, connector 1 includes a pair of terminals 10 and a housing 20 that houses the pair of terminals 10. One end of a pair of wires 2 is connected to the pair of terminals 10, respectively. The other end of the pair of wires 2 is connected to a battery (not shown). Each wire 2 includes a conductor core 2a and a cover 2b made of insulating resin that covers the conductor core 2a (see Figure 2b). Figure 6 The components that make up connector 1 will be described in turn below.

[0047] First, a pair of terminals 10 are described. In a first embodiment, the pair of terminals 10 have the same shape. Each terminal 10 is made of metal, and as shown in the image. Figure 5 and Figure 6 As shown, it includes a stepped columnar portion, which comprises a small-diameter portion 11 and a large-diameter portion 12 located behind the small-diameter portion 11. An annular step portion 13 is formed at the boundary between the small-diameter portion 11 and the large-diameter portion 12. The step portion 13 locks to the locking protrusion 37 of the base retainer 30 described later (see...). Figure 6 ).

[0048] The small-diameter portion 11 is integrally provided with a cylindrical female terminal portion 14 protruding forward from the front end surface of the small-diameter portion 11. In a pair of terminals 10, the female terminal portion 14 of one terminal 10 serves as an anode-side terminal, and the female terminal portion 14 of the other terminal 10 serves as a cathode-side terminal. When the connector 1 and the mating connector are mated, the female terminal portion 14 of one terminal 10 and the female terminal portion 14 of the other terminal 10 are respectively connected to the anode-side male terminal portion and the cathode-side male terminal portion of the mating connector.

[0049] A forward-recessed recess 15 is formed on the rear end surface of the large-diameter portion 12 (see...). Figure 6 and Figure 7 The conductor core 2a exposed at one end of the wire 2 is inserted into the recess 15 and crimped in place. Therefore, the terminal 10 and one end of the wire 2 are electrically connected to each other. The large-diameter portion 12 of the terminal 10 and the conductor core 2a of the wire 2 constitute the "connection portion" between the wire 2 and the terminal 10.

[0050] like Figure 6 As shown, an annular groove 16 is formed on the outer peripheral surface of the small-diameter portion 11 near the step portion 13, and an annular groove 17 is formed on the outer peripheral surface of the large-diameter portion 12 near the step portion 13 (see...). Figure 7 The heat transfer plate 80 and locking element 94, described later (see below) Figure 6 The O-ring 92 (see below) is installed in the annular groove 16 and described later. Figure 6 and Figure 7 It is installed in the annular groove 17. A pair of terminals 10 have been described above.

[0051] Next, the housing 20 will be described. In the first embodiment, as... Figures 1 to 6As shown, the housing 20 includes a base retainer 30, a rear retainer 40, a heat sink 50, an inner housing body 60, and an outer housing body 70. Each of the base retainer 30, rear retainer 40, heat sink 50, inner housing body 60, and outer housing body 70 is a frame component of the housing 20 and forms part of the outer surface of the housing 20. The components constituting the housing 20 will be described sequentially below. A “frame component” of the housing 20 refers to a component having sufficient rigidity and strength to maintain the shape of the housing 20 itself when the terminal 10 and the mating terminal (not shown) engage with each other, thereby resisting external forces applied to the terminal 10 and maintaining the position of the terminal 10. In other words, a “frame component” refers to a component made of a material that will not soften, become brittle, or otherwise become difficult to maintain its shape due to increased operating temperature of the terminal 10.

[0052] First, the base retainer 30 will be described. The base retainer 30 functions to hold a pair of terminals 10 in a state where the terminals 10 are spaced apart from each other in the width direction and insulated from each other. The base retainer 30 is a resin molded article, and as... Figure 5 As shown, it integrally includes a pair of terminal holding portions 31 arranged in the width direction and a connecting portion 32 connecting the pair of terminal holding portions 31 in the width direction.

[0053] like Figure 5 and Figure 6 As shown, each terminal holding portion 31 is a stepped cylindrical shape extending in the front-rear direction, including a small diameter portion 33, a medium diameter portion 34 located behind the small diameter portion 33, and a large diameter portion 35 located behind the medium diameter portion 34. A connecting portion 32 connects the medium diameter portion 34 and the large diameter portion 35 of a pair of terminal holding portions 31. A pair of terminals 10 are inserted from the rear into the internal space 31a of the pair of terminal holding portions 31 (see...). Figure 6 and Figure 7 )middle.

[0054] An annular step portion 36 is formed at the boundary between the medium diameter portion 34 and the large diameter portion 35, and an annular step portion 38 is formed at the boundary between the small diameter portion 33 and the medium diameter portion 34. The rear end surface of the tubular portion 51 of the radiator 50, described later, is locked to the step portion 36 (see...). Figure 6 and Figure 7 An annular locking protrusion 37 is formed on the inner wall surface of the front end of the small diameter portion 33, so as to protrude inward in the radial direction of the small diameter portion 33 corresponding to the stepped portion 13 of the terminal 10 (see...). Figure 6 ).

[0055] Next, the rear retainer 40 will be described. The rear retainer 40 is assembled to the base retainer 30 from the rear and functions to hold a pair of wires 2 extending rearward from a pair of terminals 10 in a state where they are spaced apart from each other in the width direction. The rear retainer 40 is a resin molded article, and as... Figure 5 As shown, it integrally includes a tubular portion 41 extending in the front-rear direction and a rear wall portion 42 that closes the rear opening of the tubular portion 41.

[0056] The tubular portion 41 has an outer peripheral shape corresponding to the outer peripheral shape formed by the pair of large-diameter portions 35 and the connecting portion 32 of the base retainer 30, and can be mounted on the rear end of the base retainer 30 to cover the outer peripheral surface of the rear end of the pair of large-diameter portions 35 and the connecting portion 32. The rear wall portion 42 has a pair of wire insertion holes 43 corresponding to the pair of large-diameter portions 35, which are arranged in the width direction and extend through in the front-rear direction. A pair of wires 2 are inserted into the pair of wire insertion holes 43 (see...). Figure 6 and Figure 7 ).

[0057] Next, the radiator 50 will be described. Of the various components forming the frame of the housing 20, only the radiator 50 is made of metal. The radiator 50 is assembled from the front to the base retainer 30 and functions to absorb and dissipate heat generated in the pair of terminals 10. This will be described in detail later.

[0058] like Figure 3 and 6 As shown, the radiator 50 includes a tubular portion 51 extending in the front-rear direction. The tubular portion 51 has an outer peripheral shape corresponding to the outer peripheral shape formed by a pair of intermediate diameter portions 34 and a connecting portion 32 of the base retainer 30, and can be mounted to the base retainer 30 to cover the outer peripheral surfaces of the pair of intermediate diameter portions 34 and the connecting portion 32.

[0059] The front end of the tubular portion 51 is integrally provided with: a pair of extensions 52 extending outward in the width direction from both sides of the front end of the tubular portion 51; and a pair of sidewall portions 53 extending forward from the extended ends of the pair of extensions 52. When viewed in the front-rear direction, the pair of sidewall portions 53 have a circumferential connection with the tubular portion 61 of the inner housing body 60, which will be described later (see also...). Figure 3 The outer periphery shape (cylindrical) corresponds to a portion of the shape, and a pair of sidewall portions 53 can be attached to the tubular portion 61 to cover the outer periphery surface of the rear end of the tubular portion 61.

[0060] like Figure 3As shown, bolt insertion portions 54 are provided at multiple locations (four locations in the first embodiment) on the outer peripheral surface (outer surface in the width direction) of a pair of sidewall portions 53. Bolt insertion holes 55 extending in the front-rear direction are formed in each bolt insertion portion 54. Bolts 91 for assembling the housing 20 (see...) Figure 3 Insert it into the bolt insertion hole 55.

[0061] Next, the inner housing body 60 will be described. The inner housing body 60 is assembled from the front to the tubular portion 51 of the heat sink 50 and has a mating recess 63 forming the connector 1 (see also...). Figure 1 The inner housing body 60 is a resin molded article and integrally includes a cylindrical tubular portion 61 extending in the front-rear direction and a rear wall portion 62 that closes the rear opening of the tubular portion 61. The tubular portion 61 and the rear wall portion 62 define a mating recess 63 that opens forward and is recessed rearward.

[0062] The rear wall portion 62 is provided with a pair of cylindrical female terminal receiving portions 64 that protrude forward corresponding to the female terminal portions 14 of the pair of terminals 10 (see...). Figure 3 and Figure 6 Each female terminal receiving portion 64 is located within the mating recess 63 and has an internal space that extends through in the front-rear direction.

[0063] like Figure 3 As shown, an annular flange 65 protruding radially outward from the tubular portion 61 is provided at a position on the rear side of the center in the front-rear direction on the outer peripheral surface of the tubular portion 61. The flange 65 has bolt insertion portions 66 at multiple circumferential positions (four positions in the first embodiment) corresponding to multiple bolt insertion portions 54 of the radiator 50. Bolt insertion holes 67 extending in the front-rear direction are formed in each bolt insertion portion 66. Bolts 91 for assembling the housing 20 (see...) Figure 3 Insert it into the bolt insertion hole 67.

[0064] Next, the outer casing body 70 will be described. The outer casing body 70 is assembled from the front to the tubular portion 61 of the inner casing body 60, and has the function of fixing the casing 20 integrally to a mounting target portion (not shown) of the connector 1 provided in the vehicle. The outer casing body 70 is a resin molded article and includes a cylindrical tubular portion 71 extending in the front-rear direction. The tubular portion 71 can be mounted from the front to the tubular portion 61 to cover the outer peripheral surface of the tubular portion 61 of the inner casing body 60 (see...). Figure 6 ).

[0065] like Figure 3As shown, an annular flange 72 protruding radially outward from the tubular portion 71 is located at the rear center of the outer peripheral surface of the tubular portion 71 in the front-rear direction. When viewed from the front-rear direction, the flange 72 has a rectangular outer peripheral shape. Bolt insertion holes 73 extending through the tubular portion 71 are formed in the four corners of the flange 72. Bolts (not shown) for fixing the connector 1 to the mounting target portion of the connector 1 are inserted into the bolt insertion holes 73.

[0066] The components that make up housing 20 have been described above.

[0067] Next, the assembly process of connector 1 will be described. First, a pair of terminals 10, which are connected to one end of a pair of wires 2, are inserted into the base retainer 30. Therefore, as preparation for insertion, as... Figure 5 and Figure 6 As shown, a pair of wire insertion holes 43 of the rear retainer 40 are inserted from the front into the covers 2b of a pair of wires 2 connected to a pair of terminals 10. Then, a cylindrical rubber seal 93 extending in the front-rear direction is inserted from the front into each of the covers 2b of the pair of wires, adjacent to the front side of the rear wall portion 42 of the rear retainer 40. Subsequently, a cylindrical heat storage member 95 extending in the front-rear direction is inserted from the front into each of the covers 2b of the pair of wires, adjacent to the front side of the seal 93. Furthermore, an O-ring 92 made of rubber (see...) is... Figure 6 and Figure 7 ) are connected to the respective annular slots 17 of a pair of terminals 10.

[0068] The heat storage component 95 is made of a metallic material capable of storing sensible heat and has the function of absorbing the heat generated at the connection between the wire 2 and the terminal 10 and dissipating the heat to the outside (this will be described later). The heat storage component 95 is inserted into the gap between the outer peripheral surface of the large diameter portion 12 of the terminal 10 and the inner peripheral surface of the middle diameter portion 34 of the base retainer 30 (terminal retainer 31) (see...). Figure 6 and Figure 7 A stepped portion 38 is provided at the end of the heat storage component 95 along the base retainer 30 (see...). Figure 7 The inner peripheral surface of the heat storage member 95 is inclined tapered. The inner peripheral surface of the heat storage member 95 is in at least partial contact with the outer peripheral surface of the large diameter portion 12 of the terminal 10, and the outer peripheral surface of the heat storage member 95 is in at least partial contact with the inner peripheral surface of the middle diameter portion 34 of the base holder 30.

[0069] Next, a pair of terminals 10 are inserted from the rear into the inner space 31a of the pair of terminal holding portions 31 of the base retainer 30 (see...). Figure 6 and Figure 7Continue the insertion until the small diameter portion 11 and the female terminal portion 14 of the pair of terminals 10 protrude forward from the front end of the pair of terminal retaining portions 31 and the stepped portion 13 of the pair of terminals 10 locks to the locking protrusion 37 of the pair of terminal retaining portions 31. In the state of completed insertion (i.e., the state of completed insertion of the pair of terminals 10 into the base retainer 30), as Figure 6 and Figure 7 As shown, the O-ring 92 mounted on the terminal 10 is in pressure contact with the inner wall surface of the small diameter portion 33 of the terminal holding portion 31.

[0070] Next, a predetermined amount of heat transfer component 96 is injected into the internal space 31a of a pair of terminal holding portions 31 of the base holder 30 (more specifically, see...). Figure 6 and Figure 7 The heat transfer component 96 is constructed by mixing a heat-promoting substance, such as alumina particles, into a base material with fluidity and viscosity, such as grease or silicone paste. The heat transfer component 96 facilitates heat transfer from the connection between the wire 2 and the terminal 10 to the heat storage component 95 (i.e., heat absorption from the connection) and from the heat storage component 95 to the terminal holding portion 31 (i.e., heat dissipation to the outside of the housing 20) (this will be described later).

[0071] Next, the rear retainer 40 is installed onto the base retainer 30. Therefore, by pressing the rear retainer 40 forward and moving the retainer 40, the pair of seals 93 located on the front side of the rear retainer 40, and the pair of heat storage components 95 located on the front side of the pair of seals 93 forward relative to the pair of wires 2, the tubular portion 41 of the rear retainer 40 is installed onto the rear end of the base retainer 30 (see...). Figure 4 , Figure 6 and Figure 7 ).

[0072] With the rear retainer 40 fully installed on the base retainer 30, such as Figure 6 and Figure 7 As shown, each heat storage component 95 is located in the gap between the outer peripheral surface of the large-diameter portion 12 of the terminal 10 and the inner peripheral surface of the middle-diameter portion 34 of the terminal holding portion 31. In the first embodiment, at least a portion of the inner peripheral surface of each heat storage component 95 is in close contact with the outer peripheral surface of the large-diameter portion 12 of the terminal 10. That is, the heat storage component 95 is in contact with the connection portion (large-diameter portion 12) between the wire 2 and the terminal 10. The effect caused by this contact will be described later. When the wire 2 and the terminal 10 are crimped and fixed, the heat storage component 95 can be crimped and fixed together to the terminal 10 (the outer peripheral surface of the large-diameter portion 12).

[0073] Furthermore, the heat transfer component 96 located in the internal space 31a of the terminal holding portion 31 is pushed away by the heat storage component 95 entering the internal space 31a, and as Figure 7 As shown, the heat transfer component 96 is positioned within the internal space to fill the gap H remaining around the heat storage component 95. For example, the heat transfer component 96 fills the gap H formed between the heat storage component 95, the inner wall surface of the base holder 30, the outer wall surface of the terminal 10, and the wire 2. Furthermore, for example, when the recess 15 of the terminal 10 is crimped to the conductor core 2a (e.g., crimped to have a hexagonal cross-sectional shape) and thus the recess 15 has a non-circular cross-sectional shape, the heat transfer component 96 fills the gap H formed between the recess 15 and the heat storage component 95. The function of the heat transfer component 96 filling the gap H will be described later.

[0074] Furthermore, each seal 93 is pressed and clamped between the inner wall surface of the large-diameter portion 35 of the terminal holding portion 31 and the outer peripheral surface of the wire 2 (covered 2b). Specifically, the plurality of ribs 93a of each seal 93 press against the inner wall surface of the large-diameter portion 35 and the outer peripheral surface of the wire 2 (covered 2b). As a result, the internal space 31a of the pair of terminal holding portions 31 is isolated from the outside by the water-stopping function of a pair of O-rings 92 and a pair of seals 93. As a result, water is prevented from intruding from the outside into the internal space 31a of the pair of terminal holding portions 31 (i.e., the connection between the wire 2 and the terminal 10). In addition, the pair of terminals 10 are held by the base retainer 30 in a state of separation and insulation from each other in the width direction, and the pair of wires 2 extending rearward from the pair of terminals 10 are held by the rear retainer 40 in a state of separation from each other in the width direction.

[0075] Once the rear retainer 40 is installed on the base retainer 30, the heat sink 50 is then installed on the base retainer 30 (see...). Figure 3 Therefore, the tubular portion 51 of the radiator 50 is attached from the front to the base retainer 30 to cover the outer peripheral surfaces of a pair of intermediate diameter portions 34 and the connecting portion 32 of the base retainer 30 (see...). Figure 6 Once the installation is complete, such as... Figure 6 and Figure 7 As shown, the rear end surface of the tubular portion 51 contacts the stepped portion 36 of the base retainer 30. In this state, the front end surfaces of the pair of extensions 52 of the heat sink 50 are positioned in the front-rear direction in the same direction as the front end surfaces of the pair of terminal retainers 31.

[0076] Once the heatsink 50 is installed onto the base retainer 30, the next step is as follows: Figure 6As shown, the heat transfer plate 80 is attached to each of the annular grooves 16 of the pair of terminals 10 exposed on the front side of the front end of the pair of terminal holding portions 31 (i.e., the front end of the small diameter portion 33), and then the locking member 94 is attached to be adjacent to the front side of the heat transfer plate 80.

[0077] The heat transfer plate 80 is made of a material with insulating properties and good thermal conductivity, and functions to transfer heat from the terminal 10 to the heat sink 50 (this will be described later). Figure 6 As shown, the heat transfer plate 80 is mounted such that one end of it is locked to the annular groove 16 and the other end of it abuts against the front end surface of the extension 52 of the radiator 50.

[0078] The locking member 94 has the function of preventing the heat sink 50 mounted on the base retainer 30 from falling forward (separating) from the base retainer 30. The locking member 94 is a plate made of resin and has a shape corresponding to the heat transfer plate 80. The locking member 94 is installed such that one end of it is locked into the annular groove 16 and the other end of it abuts against the front end surface of the other end of the heat transfer plate 80.

[0079] In this manner, the heat transfer plate 80 and the locking member 94 are mounted in each annular groove 16 of a pair of terminals 10, as... Figure 6 As shown, one end of the heat transfer plate 80 is clamped in the front-rear direction by the groove side surface of the annular groove 16 of the terminal 10 and one end of the locking member 94, and the other end of the heat transfer plate 80 is clamped in the front-rear direction by the front end surface of the extension 52 of the heat sink 50 and the other end of the locking member 94.

[0080] As a result, one end of the heat transfer plate 80 is in close contact with the annular groove 16 of the terminal 10, and the other end of the heat transfer plate 80 is in close contact with the extension 52 of the heat sink 50, thereby enabling the heat transfer plate 80 to transfer heat from the terminal 10 to the heat sink 50. In addition, one end of the locking member 94 is fitted to the annular groove 16 of the terminal 10, and the other end of the locking member 94 is locked to the front end surface of the extension 52 of the heat sink 50 via the other end of the heat transfer plate 80, thereby preventing the heat sink 50, which is fitted to the base holder 30, from falling forward (separating) from the base holder 30.

[0081] When the heat transfer fins 80 and locking members 94 are installed in each annular slot 16 of a pair of terminals 10, the inner housing body 60 is then installed on the radiator 50 (see...). Figure 3 and Figure 6Therefore, the inner housing body 60 is mounted to the radiator 50 from the front, such that a pair of sidewall portions 53 of the radiator 50 cover a portion of the outer peripheral surface of the tubular portion 61 of the inner housing body 60, and the female terminal portions 14 of a pair of terminals 10 are inserted into a pair of female terminal receiving portions 64 of the inner housing body 60 (see...). Figure 6 Once the installation is complete, such as... Figure 6 As shown, the front surface of a pair of sidewall portions 53 of the radiator 50 contacts the rear surface of the flange portion 65 of the inner housing body 60.

[0082] After the inner housing body 60 is installed onto the heat sink 50, the outer housing body 70 is then installed onto the inner housing body 60 (see...). Figure 3 and Figure 6 Therefore, the outer shell body 70 is mounted to the inner shell body 60 from the front, such that the tubular portion 71 of the outer shell body 70 covers the outer peripheral surface of the tubular portion 61 of the inner shell body 60 (see...). Figure 6 When installation is complete, such as Figure 6 As shown, the rear end surface of the tubular portion 71 of the outer shell body 70 is in contact with the front end surface of the flange portion 65 of the inner shell body 60.

[0083] When the outer shell body 70 is installed on the inner shell body 60, as follows Figure 3 As shown, multiple bolts 91 (four in the first embodiment) are then inserted from the rear into multiple bolt insertion holes 55 of the radiator 50 and multiple bolt insertion holes 67 of the inner housing body 60, and fastened to multiple fastening parts (not shown) provided in the outer housing body 70. Therefore, the radiator 50 and the inner housing body 60 are fastened together to the outer housing body 70, thereby forming the base retainer 30, rear retainer 40, radiator 50, inner housing body 60, and outer housing body 70 of the frame components of the housing 20 as a single unit. Thus, the assembly of connector 1 is completed, and a complete assembly is obtained. Figure 1 Connector 1 is shown.

[0084] The assembled connector 1 is fastened and fixed to the mounting target part (not shown) of the connector 1 installed in the vehicle by means of multiple bolts (not shown) inserted into multiple bolt insertion holes 73 of the housing body 70.

[0085] When the battery (not shown) installed in the vehicle is being charged, the mating connector (so-called charging gun) is engaged into the mating recess 63 of the connector 1, which is fixed to the mounting target of the vehicle. Thus, power is supplied to the battery from outside the vehicle in sequence via the mating connector, the connector 1, and a pair of wires 2, and the battery is charged.

[0086] Next, the operation of installing a heat sink 50 and a heat transfer plate 80 made of metal on the connector 1 will be described. As mentioned above, when the battery is charged using the connector 1, the temperature of the pair of terminals 10 in the connector 1 rises due to Joule heating caused by the current flow. In particular, in the case of rapid battery charging, since a large current flows through the pair of terminals 10 for a short period of time, the temperature rise per unit time of the pair of terminals 10 is likely to be greater.

[0087] Therefore, in the first embodiment, the heat generated in terminal 10 is mainly transferred to heat sink 50 through heat transfer plate 80 and absorbed by heat sink 50. The heat absorbed by heat sink 50 is dissipated to the outside through the outer surface of heat sink 50 (the surface exposed to the outside). As a result, the temperature of terminal 10 is prevented from rising.

[0088] Furthermore, the radiator 50 is made of metal instead of resin. Generally, when comparing metal and resin components of the same volume, the metal component has a higher density than the resin component, resulting in a greater heat capacity. Therefore, the heat capacity of the metal radiator 50 is greater than that of a resin radiator with the same shape. That is, when the radiator 50 is made of metal instead of resin, its heat capacity can be further increased. The material of the radiator 50 is not limited to metal and can be any other material, as long as the radiator 50 has the appropriate heat capacity as described above.

[0089] The greater the heat capacity of the heat sink 50, the more gradual the temperature rise of the heat sink 50 in absorbing the heat generated by the terminal 10. Therefore, for example, even when the Joule heat generated in the terminal 10 is large, such as in the case of fast charging, the temperature rise of the heat sink 50 can be made gradual by using a heat sink 50 made of metal and having a large heat capacity, and as a result, the temperature rise of the terminal 10 can also be slowed down.

[0090] The temperature of the heat sink 50, which rises due to fast charging, decreases naturally after fast charging is complete. At this point, the greater the heat capacity of the heat sink 50, the more gradual its temperature drop becomes (i.e., it takes a longer time for the temperature of the heat sink 50 to return to normal). However, the connector 1 is not used for purposes other than charging the battery, and it is difficult to imagine restarting fast charging shortly after it has finished. Therefore, even though the temperature drop of the heat sink 50 becomes gradual after fast charging (even if it takes a longer time for the temperature of the heat sink 50 to return to normal), this is not a problem given the function of the connector 1.

[0091] Furthermore, the heat sink 50 forms part of the frame component of the housing 20. Therefore, compared to the aspect where the heat sink for absorbing and dissipating heat generated in the terminal 10 is assembled to the outside of the housing 20 (connector 1), it is possible to prevent an increase in the size of the connector 1.

[0092] Next, the operation of providing the heat storage component 95 and the heat transfer component 96 in the connector 1 will be described. As mentioned above, when the battery is charged using the connector 1, the temperature of the pair of terminals 10 in the connector 1 rises due to Joule heating caused by the energization. In particular, the connection between the wire 2 and the terminal 10 is the part that generates a large amount of heat due to the magnitude of the contact resistance, and since this connection is sealed and isolated from the outside by the O-ring 92 and the seal 93 in the internal space 31a of the terminal holding part 31, and the air in the isolated internal space 31a acts as an insulating material, it is difficult for heat to dissipate to the outside. Therefore, in order to mitigate the temperature rise of the terminal 10, it is important to effectively absorb the heat generated in the connection between the wire 2 and the terminal 10.

[0093] Therefore, in the first embodiment, the heat storage component 95, which contacts the connection between the wire 2 and the terminal 10, is housed within the internal space 31a of the terminal holding portion 31. In other words, the heat storage component 95 is arranged to reduce the gap H around the connection between the wire 2 and the terminal 10 within the internal space 31a (see...). Figure 7 ).

[0094] Furthermore, the heat storage component 95 is made of metal. Generally, when comparing metal components and air of the same volume, the metal has a higher density than air, therefore the heat capacity of the metal component is greater than that of air. Thus, the heat capacity of the metal heat storage component 95 is greater than that of air with the same volume as the heat storage component 95. That is, by housing the metal heat storage component 95 within the internal space 31a of the terminal holding portion 31, the substantial heat capacity of the entire internal space 31a can be further increased. Additionally, since the heat storage component 95 is present within the internal space 31a, the amount of air within the internal space 31a, which functions as insulation material, can be reduced. The material constituting the heat storage component 95 is not limited to metal, and other materials can be used as long as their heat capacity allows the substantial heat capacity of the entire internal space 31a to be greater than that described in the case where the heat storage component 95 is not provided.

[0095] As described above, by using a heat storage component 95 with a large heat capacity to absorb the heat generated at the connection between the wire 2 and the terminal 10 when energized, even if the heat generated at the connection per unit time is large during fast charging, the temperature of the terminal 10 can be prevented from rising rapidly and the temperature of the terminal 10 can be raised gradually.

[0096] Furthermore, in the first embodiment, a heat transfer component 96 made of a fluid and viscous material is arranged in the internal space 31a of the terminal holding portion 31 to fill the gap H remaining around the heat storage component 95 (see...). Figure 7 Therefore, heat transfer from the connection between the wire 2 and the terminal 10 to the heat storage component 95 (i.e., heat absorption from the connection) and from the heat storage component 95 to the terminal holding part 31 (i.e., housing 20) (i.e., heat dissipation to the outside) can be carried out more effectively.

[0097] Second Embodiment

[0098] In the first embodiment described above, the entire heat storage component 95 is made of a metallic material capable of storing sensible heat (see...). Figure 7 In contrast, in connector 1 according to the second embodiment of the present invention, such as... Figure 8 As shown, a rearwardly opening cylindrical gap 95b is formed inside a cylindrical heat storage component 95 made of metal, and a phase change component 97 capable of storing latent heat is sealed from the rear within the gap 95b. Figure 8 In the second embodiment shown, the opening of the gap 95b in which the phase change component 97 is sealed is closed by the front surface of the seal 93. In this way, since the opening of the gap 95b is closed, the phase change component 97 sealed in the gap 95b will not leak from the gap 95b.

[0099] The phase change component 97 is a component capable of storing latent heat through a phase change from solid to liquid phase upon reaching a specified temperature, and is typically made of paraffin wax. Figure 8 In the second embodiment shown, taking advantage of the different heat storage characteristics of the heat storage component 95 capable of storing sensible heat and the phase change component 97 capable of storing latent heat, when the mass ratio between the heat storage component 95 and the phase change component 97 is appropriately set considering the degree of heat generated at the connection between the wire 2 and the terminal 10 (e.g., the assumed highest temperature of the connection), heat absorption from the connection and heat dissipation to the outside can be performed more effectively. Furthermore, by replacing a portion of the heat storage component 95, which is made of metal, with the phase change component 97, which is made of paraffin wax, the weight of the heat storage component 95 can be reduced.

[0100] Third Embodiment

[0101] In the first embodiment described above, the entire heat storage component 95 is made of a metallic material capable of storing sensible heat (see...). Figure 7 In contrast, in connector 1 according to the third embodiment of the present invention, such as... Figure 9 As shown, a rearwardly opening cylindrical gap 95b is formed inside a cylindrical heat storage component 95 made of metal, and a phase change component 97 capable of storing latent heat is sealed from the rear within the gap 95b. Figure 9In the third embodiment shown, the opening of the gap 95b, in which the phase change component 97 is sealed, is closed by an annular cover component 98. In this way, the phase change component 97 sealed in the gap 95b will not leak from the gap 95b because the opening of the gap 95b is closed.

[0102] Similar to the second embodiment, the phase change component 97 is a component capable of storing latent heat through a phase change from solid to liquid phase upon reaching a specified temperature, and is typically made of paraffin wax. Figure 9 In the third embodiment shown, taking advantage of the different heat storage characteristics of the heat storage component 95 capable of storing sensible heat and the phase change component 97 capable of storing latent heat, when the mass ratio between the heat storage component 95 and the phase change component 97 is appropriately set considering the degree of heat generated at the connection between the wire 2 and the terminal 10 (e.g., the assumed maximum temperature of the connection), heat absorption from the connection and heat dissipation to the outside can be performed more effectively. Furthermore, by replacing a portion of the heat storage component 95, which is made of metal, with the phase change component 97, which is made of paraffin wax, the weight of the heat storage component 95 can be reduced.

[0103] Fourth embodiment

[0104] In connector 1 according to the fourth embodiment of the present invention, such as Figure 10 As shown, a forward-opening cylindrical gap 93b is formed inside the cylindrical seal 93, and a further rearwardly extending extension 95c is formed at the cylindrical heat storage member 95, with the extension 95c of the heat storage member 95 inserted into the gap 93b from the front. Figure 10 In the fourth embodiment shown, the seal 93 contacts both the inner and outer peripheral surfaces of the cylindrical heat storage member 95 (extension 95c). Alternatively, the seal 93 may contact only one of the inner and outer peripheral surfaces of the cylindrical heat storage member 95 (extension 95c). Therefore, heat can be effectively transferred from the heat storage member 95 to the seal 93, and the seal 93 can also be used for heat storage in addition to the heat storage member 95. Thus, heat absorption and heat dissipation at the connection between the wire 2 and the terminal 10 can be performed more effectively.

[0105] Fifth Embodiment

[0106] In the first embodiment described above, the outer peripheral surface of the cylindrical heat storage component 95 is a flat surface without protrusions (see...). Figure 5 In contrast, in connector 1 according to the fifth embodiment of the present invention, as... Figure 11 As shown, on the outer peripheral surface of the cylindrical heat storage component 95, protrusions 95d are provided at multiple locations in the circumferential direction, protruding radially outward and extending in the front-rear direction. For example... Figure 12 and Figure 13As shown, on the inner circumferential surface of the middle diameter portion 34 of the base retainer 30, which is arranged to cover the outer periphery of the heat storage component 95, grooves 34a are provided at multiple locations in the circumferential direction, recessed radially outward and extending in the front-rear direction, corresponding to multiple protrusions 95d of the heat storage component 95. In other words, on the inner circumferential surface of the middle diameter portion 34 of the base retainer 30, protrusions 34b are provided at multiple locations in the circumferential direction, protruding radially inward and extending in the front-rear direction, and grooves 34a are formed between protrusions 34b that are adjacent to each other in the circumferential direction. Each of the multiple protrusions 95d of the heat storage component 95 is received (inserted) into the corresponding groove 34a of the middle diameter portion 34. A heat transfer component 96 (see [reference]) is positioned in the internal space 31a to fill the gap H remaining near the heat storage component 95. Figure 12 The gap H between the protrusions 95d and the grooves 34a, which are arranged facing each other, is also filled. As a heat transfer component 96, as in the first embodiment, a component that incorporates a heat-promoting substance such as alumina particles into a substrate with fluidity and viscosity, such as grease or silicone grease, is used.

[0107] exist Figure 12 For ease of description, the illustration of heat sink 50 has been omitted. This also applies to... Figure 13 , Figure 14 , Figure 16 , Figure 17 , Figure 19 , Figure 21 , Figure 22 , Figure 24 , Figure 25 and Figure 27 .

[0108] As in the first embodiment, after the terminal 10 is received in the base retainer 30, it can be... Figure 11 The heat storage component 95 shown is housed in the base retainer 30 (middle diameter portion 34), or when the wire 2 and terminal 10 are crimped and fixed together, it can be... Figure 11 The heat storage component 95 shown is pressed together and fixed to the terminal 10 (the outer peripheral surface of the large diameter portion 12).

[0109] In the fifth embodiment, since the heat storage member 95 has a protrusion 95d, the volume of the heat storage member 95 is increased, and the heat storage performance of the heat storage member 95 can be improved compared to the case where the heat storage member 95 does not have such a protrusion. Furthermore, since the protrusion 95d of the heat storage member 95 enters the groove 34a of the middle diameter portion 34 of the base holder 30, the surface area for heat transfer between the heat storage member 95 and the middle diameter portion 34 is increased, and heat absorption from the connection portion (large diameter portion 12) between the wire 2 and the terminal 10 and heat dissipation to the outside can be performed more effectively. In addition, since the gap H between the protrusion 95d and the groove 34a is filled with a heat transfer member 96, the efficiency of heat absorption and heat dissipation is further improved.

[0110] like Figure 12 As shown, in the fifth embodiment, the rear end of the heat storage component 95 contacts the front end of the seal 93, and the rear retainer 40 contacts the rear end of the seal 93. That is, the sealing gasket 93 is sandwiched between the heat storage component 95 and the rear retainer 40. In contrast, as Figure 14 As in the modified fifth embodiment shown, instead of the rear end of the heat storage member 95, a protrusion 34b is provided on the inner peripheral surface of the middle diameter portion 34 of the base holder 30 (see also...). Figure 13 The rear end 34c of the seal 93 can contact the front end of the seal 93. That is, in this modified example, the seal 93 is sandwiched between the protrusion 34b and the rear retainer 40. By sandwiching the seal 93 in this way, the seal 93 is held (i.e., positioned) at a predetermined position in the front-rear direction. Instead of along the Figure 13 A cross-sectional view of line DD. Figure 14 In which the connector 1 according to the modification of the fifth embodiment is in contact with the... Figure 13 The cross-sectional view of connector 1 is taken from the position corresponding to the cut of the line DD.

[0111] Sixth Embodiment

[0112] In the first embodiment described above, the heat transfer component 96, located in the internal space 31a to fill the gap H remaining around the heat storage component 95, uses a component in which a heat transfer-promoting substance, such as alumina particles, is mixed into a substrate with fluidity and viscosity, such as grease or silicone grease. In contrast, in the connector 1 according to the sixth embodiment of the present invention, as... Figure 15 As shown, a cylindrical component formed of a metal mesh material (hereinafter also referred to as metal mesh) is used as a heat transfer component 96. Figure 16 As shown, Figure 15 The cylindrical heat transfer component 96 shown is mounted to the outer peripheral surface of the large diameter portion 12 of the terminal 10 and is fixed to the outer peripheral surface of the large diameter portion 12 by means such as crimping or laser bonding.

[0113] In the sixth embodiment, wherein Figure 15 The heat transfer component 96 shown is fixed to the terminal 10 on the outer peripheral surface of the large-diameter portion 12, which is housed within the base retainer 30. Subsequently, the heat storage component 95 used in the first embodiment is housed within the base retainer 30 (middle-diameter portion 34). Therefore, as... Figure 16 As shown, the heat storage component 95 is located in Figure 15 The heat transfer component 96 is shown in the gap between the outer peripheral surface and the inner peripheral surface of the middle diameter portion 34 of the terminal holding portion 31, and at least the inner peripheral surface of the heat storage component 95 is in close contact with the outer peripheral surface of the heat transfer component 96.

[0114] In the sixth embodiment, since the flexible heat transfer member 96 formed of metal mesh can be easily deformed into a shape corresponding to the gap H, the heat transfer member 96, the connection portion (large diameter portion 12) between the wire 2 and the terminal 10, and the heat storage member 95 can make sufficient close contact with each other. Therefore, heat absorption from the connection portion (large diameter portion 12) between the wire 2 and the terminal 10 and heat dissipation to the outside can be performed more effectively.

[0115] Furthermore, in the sixth embodiment, the heat transfer component 96 is formed of a mesh material (metal mesh) made of wires (metal wires) with heat transfer properties. Since the metal mesh has portions where the wires intersect and portions where the wires are woven together, it has many tiny irregularities on its surface. In these numerous irregularities, the wires (mesh, etc.) of the heat transfer component 96 come into contact with the connection between the wire 2 and the terminal 10 and the heat storage component 95. Therefore, heat absorption from the connection between the wire 2 and the terminal 10 and heat dissipation to the outside can be performed more effectively. Furthermore, even when an external force such as vibration is applied to the connector 1, it is possible to prevent the heat transfer component 96 from being pushed out of the gap around the heat storage component 95 (so-called pumping out).

[0116] Seventh Embodiment

[0117] As in the sixth embodiment, in the connector 1 according to the seventh embodiment of the present invention, by Figure 15 The cylindrical component formed from the metal mesh shown serves as the heat transfer component 96. In the sixth embodiment described above, the cylindrical heat transfer component 96 is integrally fixed to the outer peripheral surface of the large-diameter portion 12 of the terminal 10 in the front-rear direction (see...). Figure 16 In contrast, in the seventh embodiment, as... Figure 17 As shown, Figure 15The front region 96a of the cylindrical heat transfer component 96 shown is arranged between the inner peripheral surface of the large diameter portion 12 of the terminal 10 and the outer periphery of the wire 2 (conductor core 2a), and is crimped and fixed to the large diameter portion 12 together with the wire 2. The rear region 96b of the heat transfer component 96 is folded back radially outward and forward and is in close contact with the outer peripheral surface of the large diameter portion 12.

[0118] In the seventh embodiment, as Figure 17 As shown, the terminal 10 on which the heat transfer component 96 is arranged is housed in the base holder 30, and then the heat storage component 95 used in the first embodiment is housed in the base holder 30 (middle diameter portion 34). Therefore, as Figure 17 As shown, the heat storage component 95 is located in the gap between the outer peripheral surface of the rear region 96b of the heat transfer component 96 and the inner peripheral surface of the middle diameter portion 34 of the terminal holding portion 31, and at least the inner peripheral surface of the heat storage component 95 is in close contact with the outer peripheral surface of the rear region 96b of the heat transfer component 96.

[0119] In the seventh embodiment, the same operation and effects as in the sixth embodiment are achieved. Furthermore, in the seventh embodiment, in addition to the gap between the connection between the wire 2 and the terminal 10 and the heat storage component 95, a conductive mesh material constituting the heat transfer component 96 is also arranged between the wire 2 and the terminal 10 (conductor core 2a). Therefore, heat absorption from the connection between the wire 2 and the terminal 10 and heat dissipation to the outside can be performed more effectively, and the reliability of the electrical connection between the wire 2 and the terminal 10 can be improved.

[0120] Eighth embodiment

[0121] In the sixth embodiment described above, the cylindrical component formed of a metal mesh is used as the heat transfer component 96 (see...). Figure 15 and 16 In contrast, in connector 1 according to the eighth embodiment of the present invention, as... Figure 18 As shown, a sheet-like component made of nonwoven fabric covered with a metal plating such as copper plating is used as the heat transfer component 96. Figure 19 As shown, Figure 18 The sheet-like heat transfer component 96 shown is wound around the outer peripheral surface of the large diameter portion 12 of the terminal 10 and fixed to the outer peripheral surface of the large diameter portion 12 by means such as crimping or laser bonding.

[0122] In the eighth embodiment, Figure 18 The heat transfer component 96 shown is wound around and fixed to the terminal 10 on the outer peripheral surface of the large-diameter portion 12, which is housed within the base retainer 30. Subsequently, the heat storage component 95 used in the first embodiment is housed within the base retainer 30 (middle-diameter portion 34). Therefore, as... Figure 19 As shown, the heat storage component 95 is located in Figure 18 The heat transfer component 96 is shown in the gap between the outer peripheral surface and the inner peripheral surface of the middle diameter portion 34 of the terminal holding portion 31, and at least the inner peripheral surface of the heat storage component 95 is in close contact with the outer peripheral surface of the heat transfer component 96.

[0123] In the eighth embodiment, since the flexible heat transfer member 96, formed of a nonwoven fabric covered with a metal coating, can be easily deformed into a shape corresponding to the gap H, the heat transfer member 96, the connection portion (large diameter portion 12) between the wire 2 and the terminal 10, and the heat storage member 95 can be in sufficient close contact with each other. Therefore, heat absorption from the connection portion (large diameter portion 12) between the wire 2 and the terminal 10 and heat dissipation to the outside can be performed more effectively.

[0124] Furthermore, in the eighth embodiment, the heat transfer component 96 is formed of a sheet-like component covered with a heat-conducting coating material (metallic plating). The nonwoven fabric has numerous pores opening on its surface, and the periphery of these pores has numerous tiny irregularities. The metallic plating contacts the connection between the wire 2 and the terminal 10 and the heat storage component 95 at these numerous irregularities. Therefore, heat absorption at the connection between the wire 2 and the terminal 10 and heat dissipation to the outside can be performed more effectively.

[0125] Ninth Embodiment

[0126] In the eighth embodiment described above, a sheet-like component formed of nonwoven fabric covered with a metal plating such as copper plating is used as the heat transfer component 96 (see Figure 18 In contrast, in the connector 1 according to the ninth embodiment of the present invention, a sheet-like component formed of a nonwoven fabric impregnated with a heat-storing impregnation material such as paraffin wax is used as the heat transfer component 96. The shape and arrangement of the heat transfer component 96 are the same as those of the eighth embodiment (see [reference needed]). Figure 18 and Figure 19 That is, the sheet-like heat transfer component 96 used in the ninth embodiment has... Figure 18 The shape shown, and as Figure 19 As shown, the large-diameter portion 12 of the terminal 10 is wrapped around the outer peripheral surface and fixed to the outer peripheral surface of the large-diameter portion 12 by means such as crimping or laser bonding.

[0127] In the ninth embodiment, Figure 18 The heat transfer component 96 shown is wound around and fixed to the terminal 10 on the outer peripheral surface of the large-diameter portion 12, which is housed within the base retainer 30. Subsequently, the heat storage component 95 used in the first embodiment is housed within the base retainer 30 (middle-diameter portion 34). Therefore, as... Figure 19 As shown, the heat storage component 95 is located in Figure 18The heat transfer component 96 is shown in the gap between the outer peripheral surface and the inner peripheral surface of the middle diameter portion 34 of the terminal holding portion 31, and at least the inner peripheral surface of the heat storage component 95 is in close contact with the outer peripheral surface of the heat transfer component 96.

[0128] In the ninth embodiment, since the flexible heat transfer member 96, formed from a nonwoven fabric impregnated with a heat-storing impregnation material, can be easily deformed into a shape corresponding to the gap H, the heat transfer member 96, the connection portion (large diameter portion 12) between the wire 2 and the terminal 10, and the heat storage member 95 can be in sufficient close contact with each other. Therefore, heat absorption from the connection portion (large diameter portion 12) between the wire 2 and the terminal 10 and heat dissipation to the outside can be performed more effectively.

[0129] Furthermore, in the ninth embodiment, through the heat storage effect of the impregnating material, the heat transfer component 96 can not only absorb heat from the connecting portion (large diameter portion 12) and dissipate heat to the outside, but also assist the heat storage component 95 in its heat storage effect. Additionally, since the nonwoven fabric has sufficient flexibility to follow the surface shape of the connecting portion (large diameter portion 12) and the heat storage component 95, the fit with the connecting portion (large diameter portion 12) and the heat storage component 95 can be improved. By using an impregnating material capable of storing latent heat, such as paraffin wax, the fluidity of the impregnating material increases with the phase change during heat storage, and thus the fit between the heat transfer component 96 and the connecting portion (large diameter portion 12) and the heat storage component 95 can be improved.

[0130] Tenth Embodiment

[0131] In connector 1 according to the tenth embodiment of the present invention, such as Figure 20 As shown, recessed crimping marks 12a are formed at multiple locations (six locations) in the circumferential direction on the outer peripheral surface of the large-diameter portion 12 of the terminal 10, which are formed when the wire 2 and the terminal 10 are crimped and fixed. The inner wall surface defining the front end of the recessed crimping mark 12a is an inclined surface 12b, which is inclined in a direction that moves forward as the inner wall surface extends radially outward (see...). Figures 20 to 22 ).

[0132] In the tenth embodiment, the terminal 10 to which the wire 2 is crimped and fixed is housed within the base retainer 30, and subsequently, the heat storage component 95 used in the first embodiment is housed within the base retainer 30 (middle diameter portion 34). At this time, as... Figure 21 and Figure 22 As shown, the annular end 95e of the heat storage component 95 (see...) Figure 22The heat storage component 95 presses against the inclined surface 12b of the terminal 10, thereby making line contact (or point contact) with the inclined surface 12b, and the end portion of the heat storage component 95 presses against the inclined surface 12b and the inner circumferential surface of the middle diameter portion 34 of the base holder 30. In the tenth embodiment, the heat transfer component 96 is omitted.

[0133] In the tenth embodiment, the heat storage component 95 is press-fitted between the inner wall surface of the middle diameter portion 34 of the base holder 30 defining the internal space 31a and the inclined surface 12b of the recessed crimping portion 12a of the terminal 10. Therefore, the tightness between the heat storage component 95 and the base holder 30, as well as the tightness between the heat storage component 95 and the surface of the terminal 10 (i.e., the connection portion between the wire 2 and the terminal 10), is enhanced, and heat absorption from the connection portion and heat dissipation to the outside can be performed more effectively.

[0134] Furthermore, in the tenth embodiment, by using the inclined surface 12b of the crimped portion 12a of the terminal 10, the surfaces of the heat storage member 95 and the terminal 10 can be properly and closely contacted with each other without the need to provide dedicated pressure-fitting protrusions or the like on the surface of the terminal 10.

[0135] Eleventh Embodiment

[0136] In connector 1 according to the eleventh embodiment of the present invention, Figure 20 The terminal 10 shown is used in the same way as in the tenth embodiment. Additionally, in the eleventh embodiment, as... Figure 23 As shown, protrusions 95f, which project radially inward and extend in the front-rear direction, are provided at multiple locations (six locations) on the inner circumferential surface of the cylindrical heat storage component 95, corresponding to the multiple (six) crimping marks 12a of the large-diameter portion 12 of the terminal 10. That is, the heat storage component 95 has the same number of protrusions 95f as the crimping marks 12a of the terminal 10. The front end surface of each protrusion 95f is an inclined surface 95g, which is inclined in a direction that moves forward as the front end surface extends radially outward (see...). Figure 23 and Figure 23 ).

[0137] In the eleventh embodiment, the terminal 10 to which the wire 2 is crimped and fixed is housed within the base retainer 30, and thereafter, Figure 23 The heat storage component 95 shown is housed within the base retainer 30 (middle diameter portion 34). At this time, as... Figure 24 and 25 As shown, the inclined surface 95g of each protrusion 95f of the heat storage component 95 (see...) Figure 25The inclined surface 12b of the terminal 10 is pressed against the heat storage member 95, so that the inclined surface 95g of each protrusion 95f of the heat storage member 95 makes surface contact with the inclined surface 12b, and the end portion of the heat storage member 95 is press-fitted between the inclined surface 12b and the inner peripheral surface of the middle diameter portion 34 of the base holder 30. In the eleventh embodiment, as in the tenth embodiment, the heat transfer member 96 is omitted.

[0138] According to the eleventh embodiment, the heat storage component 95 is press-fitted between the inner wall surface of the middle diameter portion 34 of the base holder 30 defining the internal space 31a and the inclined surface 12b of the recessed crimping portion 12a of the terminal 10. Therefore, the tightness between the heat storage component 95 and the base holder 30, as well as the tightness between the heat storage component 95 and the surface of the terminal 10 (i.e., the connection portion between the wire 2 and the terminal 10), is enhanced, and heat absorption from the connection portion and heat dissipation to the outside can be performed more effectively.

[0139] According to the eleventh embodiment, the inclined surface 12b of the crimped portion 12a of the terminal 10 and the inclined surface 95g of the protrusion 95f of the heat storage member 95 make surface contact with each other, thereby enabling the surfaces of the heat storage member 95 and the terminal 10 to make more appropriate and close contact with each other.

[0140] Furthermore, according to the eleventh embodiment, since the heat storage component 95 has the same number of protrusions 95f as the crimped portion 12a, the number of portions in surface contact between the inclined surface 12b of the crimped portion 12a and the inclined surface 95g of the protrusions 95f of the heat storage component 95 can be increased without excessive design burden.

[0141] Twelfth Embodiment

[0142] In connector 1 according to the twelfth embodiment of the present invention, such as Figure 26 and Figure 27 As shown, an arc-shaped gap 93c extending in the front-rear direction is formed inside the cylindrical seal 93, and an extension 95h extending further rearward is formed on the rearward surface of the cylindrical heat storage member 95 corresponding to the gap 93c of the seal 93. On the front end surface of the rear wall portion 42 of the rear retainer 40, the gap 93c of the seal 93 (see...) Figure 27 A recessed portion 42a is correspondingly formed, extending rearward in an arc shape, and a heat storage portion 99 capable of storing heat is accommodated in the recessed portion 42a. The heat storage portion 99 is made of, for example, a metallic material capable of storing sensible heat. The extension portion 95h of the heat storage member 95 penetrates the gap 93c of the seal member 93 and contacts the front end surface of the heat storage portion 99 accommodated in the recessed portion 42a of the rear wall portion 42 of the rear retainer 40.

[0143] According to the twelfth embodiment, the extension 95h of the heat storage component 95 penetrates the seal 93 and contacts the heat storage portion 99 housed in the rear retainer 40. Therefore, in addition to the heat storage component 95, the heat storage portion 99 housed in the rear retainer 40 can also be used for heat storage. Thus, heat absorption from the connection between the wire 2 and the terminal 10 and heat dissipation to the outside can be performed more effectively.

[0144] As described above, according to the first to twelfth embodiments, the connector 1, the connection between the wire 2 and the terminal 10, and the heat storage component 95 are housed within the internal space 31a of the terminal holding portion 31 in the housing 20. In other words, the heat storage component 95 is arranged to reduce the gap H around the connection in the internal space 31a (see...). Figure 7 The size of the connector 10 is such that, by absorbing the heat generated at the connection between the wire 2 and the terminal 10 by the heat storage component 95 with a large heat capacity when energized, even when the heat generated at the connection per unit time is large, as in fast charging, a rapid increase in the operating temperature of the terminal 10 can be prevented, and the operating temperature of the terminal 10 can be increased gradually. Therefore, the connector 1 according to the first to twelfth embodiments can prevent the operating temperature of the terminal 10 from rising excessively while avoiding an increase in the size of the connector 1.

[0145] Furthermore, the heat transfer component 96 is arranged in the internal space 31a to fill the gap H remaining around the heat storage component 95. Figure 7 Therefore, heat transfer from the connection between the wire 2 and the terminal 10 to the heat storage component 95 (i.e., heat absorption from the connection) and from the heat storage component 95 to the housing 20 (i.e., heat dissipation to the outside) can be carried out more effectively.

[0146] The foregoing description of exemplary embodiments of the invention has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. It will be apparent to those skilled in the art that numerous modifications and variations will be readily apparent. Embodiments have been selected and described to best explain the principles of the invention and its practical application, thereby enabling others skilled in the art to understand the invention with respect to various embodiments and modifications suited to the particular intended use. The scope of the invention is intended to be defined by the following claims and their equivalents.

[0147] For example, multiple features of the heat storage component 95 and the heat transfer component 96 in the connector 1 according to the first to twelfth embodiments described above can be appropriately combined. Specifically, for example, in the sixth and seventh embodiments (see... Figure 16 and 17 ),Depend on Figure 15 The cylindrical component formed from the metal mesh shown is used as heat transfer component 96. In contrast, as heat transfer component 96, besides being composed of… Figure 15 In addition to the cylindrical component formed by the metal mesh shown, a fluid component used in the first embodiment can be provided to fill the gap H, in which a heat-promoting substance such as alumina particles is mixed into a fluid and viscous substrate such as grease or silicone grease.

[0148] Similarly, in the eighth and ninth embodiments (see...) Figure 18 and 19 )middle, Figure 18 The sheet-like component shown serves as heat transfer component 96. In contrast, as heat transfer component 96, besides... Figure 18 In addition to the sheet-like component shown, a fluid component used in the first embodiment can be provided to fill the gap H, in which a heat-promoting substance such as alumina particles is mixed into a fluid and viscous substrate such as grease or silicone grease.

[0149] In the tenth and eleventh embodiments (see...) Figure 21 and Figure 24 The heat transfer component 96 is omitted. In contrast, the heat transfer component 96 can be a fluid component used in the first embodiment to fill the gap H, in which a heat transfer promoting substance such as alumina particles is mixed into a fluid and viscous substrate such as grease or silicone grease.

[0150] Furthermore, in a modified example of the fifth embodiment, the rear end 34c of the protrusion 34b provided on the inner peripheral surface of the base retainer 30 contacts the seal 93 (see...). Figure 14 In other embodiments, similarly, a protrusion 34b may be provided on the inner circumferential surface of the base retainer 30, and the rear end 34c of the protrusion 34b may contact the seal 93. Furthermore, in any embodiment, the seal 93 may be configured not to contact the protrusion 34b nor the heat storage component 95.

[0151] According to the exemplary embodiments described above, the connector (1) includes:

[0152] Wire (2);

[0153] Terminal (10) connected to wire (2);

[0154] The housing (20) has a receiving space (31a) for accommodating the connection between the wire (2) and the terminal (10);

[0155] A sealing member (93) that seals the opening of the receiving space (31a) to isolate the connection portion received in the receiving space (31a) from the outside; and

[0156] The heat storage component (95) is located within the housing space (31a).

[0157] According to the connector with the above-described structure, the connection between the wire and the terminal, as well as the heat storage component, are housed within a receiving space inside the housing. In other words, the heat storage component is arranged to reduce the size of the gap around the connection in the receiving space. Therefore, by absorbing the heat generated at the connection between the wire and the terminal by the heat storage component with a large heat capacity when energized, even when the heat generated at the connection per unit time is large, as during fast charging, a rapid increase in the terminal operating temperature can be prevented, and the terminal operating temperature can be raised gradually. From the viewpoint of heat absorption by the connection, it is preferable that at least a portion of the heat storage component is in contact with the connection. Furthermore, since the heat storage component is present in the receiving space, the amount of air acting as an insulating material within the receiving space can be reduced. Therefore, the connector with this structure can prevent excessive increase in the terminal operating temperature while avoiding an increase in connector size.

[0158] The connector (1) may further include a heat transfer component (96) located within the receiving space (31a) to fill at least a portion of the gap (H) surrounding the heat storage component (95) remaining in the receiving space (31a).

[0159] According to the connector having the above-described structure, the heat transfer component is arranged in the receiving space to fill at least a portion of the gap remaining around the heat storage component. Therefore, for example, when the heat transfer component is arranged between the connection between the wire and the terminal and the heat storage component, heat transfer from the connection to the heat storage component (i.e., heat absorption from the connection) can be performed more effectively. Furthermore, for example, when the heat transfer component is arranged between the heat storage component and the housing, heat transfer from the heat storage component to the housing (i.e., heat dissipation to the outside) can be performed more effectively.

[0160] In the connector (1), the heat transfer component (96) may include: a flexible substrate; and a heat transfer element that has heat transfer properties and is mixed with the substrate.

[0161] According to the connector having the above-described structure, the heat transfer component comprises a mixture of a flexible substrate (e.g., grease or silicone resin) and a heat transfer element (e.g., alumina particles). When the mixture is deformed into a shape corresponding to the gap remaining around the heat storage component, the connection, heat storage component, and heat transfer component can easily come into close contact with each other. Therefore, heat absorption from the connection and heat dissipation to the outside can be performed more effectively.

[0162] In the connector (1), the heat transfer component (96) may have a mesh material formed of wires with heat transfer properties.

[0163] According to the connector with the above-described structure, the heat transfer component is formed of a mesh material made of heat-conducting wires (e.g., metal wires). Because the metal mesh has portions where the wires intersect and weave together, the mesh material has numerous tiny irregularities on its surface. The mesh material contacts the heat storage component and the connection between the wires and terminals at these numerous irregularities. Therefore, heat absorption from the connection and heat dissipation to the outside can be performed more effectively. Furthermore, even when external forces such as vibration are applied to the connector, it is possible to prevent the mesh material from being pushed out of the gaps around the heat storage component (so-called pumping out).

[0164] In the connector (1), the mesh material may be conductive, and the heat transfer component (96) may be located in the gap (H) and between the wire (2) and the terminal (10).

[0165] According to the connector with the above-described structure, in addition to the gap between the connection between the wire and the terminal and the heat storage component, a conductive mesh material is also arranged between the wire and the terminal. Therefore, the efficiency of heat absorption from the connection and heat dissipation to the outside can be improved, and the reliability of the electrical connection between the wire and the terminal can also be improved.

[0166] In the connector (1), the heat transfer component (96) may have: a porous sheet; and a coating material that has heat transfer properties and covers the porous sheet.

[0167] According to the connector having the above-described structure, the heat transfer component comprises a porous sheet (e.g., non-woven fabric) covered by a heat-conducting coating material (e.g., copper plating). The sheet has numerous minute irregularities around the periphery of a plurality of holes formed on its surface. The coating material covering the sheet contacts the heat storage component and the connection between the wire and the terminal at these numerous irregularities. Therefore, heat absorption from the connection and heat dissipation to the outside can be performed more effectively. Furthermore, if a sheet with sufficient flexibility to conform to the surface shape of the connection and the heat storage component is used, the seal with the connection and the heat storage component can be improved.

[0168] In the connector (1), the heat transfer component (96) may have: a porous sheet; and an impregnating material that is capable of storing heat and is impregnated in the sheet.

[0169] According to the connector having the above-described structure, the heat transfer component includes a porous sheet (e.g., nonwoven fabric) impregnated with a heat-storing impregnating material (e.g., paraffin wax). The sheet is able to retain the impregnating material within a large number of pores. Through the heat storage effect of the impregnating material, the heat transfer component, in addition to absorbing heat from the connection and dissipating heat to the outside, can also perform a heat storage function to assist the heat storage component. Furthermore, if a sheet with a degree of flexibility capable of conforming to the surface shape of the connection and the heat storage component is used, the fit with the connection and the heat storage component can be improved. By using an impregnating material capable of storing latent heat, the fluidity of the impregnating material increases with the phase change during heat storage, and thus the fit between the heat transfer component and the connection and the heat storage component can be improved.

[0170] In the connector (1), the heat storage component (95) may have: a cover (95) which is capable of storing sensible heat and at least partially in contact with the connection portion; and a sealing portion (97) which is capable of storing latent heat and is sealed inside the cover (95).

[0171] According to the connector with the above-described structure, the heat storage component includes a cover capable of storing sensible heat and a sealing portion capable of storing latent heat and sealed inside the cover. That is, in the cover, the temperature of the cover itself varies according to the heat capacity of the material constituting the cover, thereby storing heat energy (i.e., storing sensible heat). Simultaneously, in the sealing portion, the phase change of the material constituting the sealing portion is utilized, and the heat of the phase change is stored as heat energy (i.e., storing latent heat). In this way, by combining cover and sealing portions with different heat storage principles, heat absorption from the connection and heat dissipation to the outside can be performed more effectively. For example, the mass ratio between the cover and the sealing portion can be appropriately set considering the degree of heat generated at the connection between the wire and the terminal (e.g., the assumed maximum temperature of the connection). When the density of the material constituting the sealing portion is less than the density of the material constituting the cover, the weight of the heat storage component can be reduced by replacing a portion of the cover with the sealing portion, as in the connector with this structure.

[0172] In the connector (1), the heat storage component (95) may have a tubular shape surrounding the connection portion, and the sealing component (93) may be configured to contact at least a portion of at least one of the inner and outer peripheral surfaces of the heat storage component (95).

[0173] According to the connector having the above-described structure, the sealing member contacts at least a portion of at least one of the inner and outer peripheral surfaces of the heat storage member having a tubular shape. Therefore, heat can be effectively transferred from the heat storage member to the sealing member, and the sealing member can also be used for heat storage in addition to the heat storage member. Thus, heat absorption from the connection and heat dissipation to the outside can be performed more effectively.

[0174] In the connector (1), the heat storage component (95) may have a protrusion (95d) protruding toward the housing (20), and the housing (20) may have a recess (34a) for receiving the protrusion (95d).

[0175] According to the connector with the above structure, since the heat storage component has a protrusion, its volume is larger compared to the case where the heat storage component does not have such a protrusion, and its heat storage performance can be improved. Furthermore, since the protrusion of the heat storage component enters the recess of the housing, the surface area that facilitates heat transfer between the two is increased, and heat absorption from the connection and heat dissipation to the outside can be performed more effectively.

[0176] In the connector (1), the heat storage component (95) can be press-fitted between the inner wall surface of the housing (20) and the surface of the terminal (10), and the inner wall surface can define a receiving space (31a).

[0177] According to the connector with the above-described structure, the heat storage component is pressure-fitted between the inner wall surface of the housing defining the accommodating space and the surface of the terminal. Therefore, the sealing between the heat storage component and the housing, as well as the sealing between the surface of the heat storage component and the terminal, is improved, and heat absorption from the connection and heat dissipation to the outside can be performed more effectively.

[0178] In the connector (1), the terminal (10) can be connected to the wire (2) by crimping the terminal (10) to the wire (2), and the terminal (10) may have a recessed crimping mark (12a) on its surface, and the heat storage member (95) can be pressure-fitted to make pressure contact with the concave surface (12b) of the crimping mark (12a).

[0179] According to the connector with the above structure, by using the concave surface of the crimping part of the terminal, the heat storage component and the surface of the terminal can be properly and tightly contacted with each other without the need to provide a special pressure fit protrusion on the surface of the terminal.

[0180] In the connector (1), the heat storage component (95) may have a protrusion (95f) that protrudes toward the crimping portion (12a), and the protrusion (95f) may contact the concave surface (12b) of the crimping portion (12a).

[0181] According to the connector having the above structure, the concave surface of the crimped portion of the terminal and the protrusion of the heat storage component make surface contact with each other, thereby enabling the heat storage component and the terminal to make more appropriate and tighter contact with each other.

[0182] In the connector (1), the number of protrusions (95f) of the heat storage component (95) can be the same as the number of crimp marks (12a).

[0183] According to the connector with the above structure, since the number of protrusions of the heat storage component is the same as the number of crimping parts, it is possible to increase the number of concave surfaces of the crimping parts and the portion where the heat storage component makes surface contact with each other without adding too much design burden.

[0184] The connector (1) may further include a retainer (40) for preventing displacement of the sealing member (93), wherein the heat storage member (95) may have an extension (95h) that penetrates the sealing member (93) and contacts the retainer (40), and the retainer (40) may have a heat storage portion (99) located at the contact portion between the retainer (40) and the extension (95h), the heat storage portion (99) being capable of heat storage.

[0185] According to the connector with the above-described structure, the extension of the heat storage component penetrates the sealing component and contacts the heat storage portion of the retainer. Therefore, in addition to the heat storage component, the heat storage portion of the retainer can also be used for heat storage. Thus, heat absorption from the connection and heat dissipation to the outside can be performed more effectively.

[0186] Therefore, according to the present invention, a connector can be provided that can prevent the operating temperature of the terminals from rising excessively while avoiding an increase in connector size.

Claims

1. A connector, comprising: electric wire; A terminal that is connected to the wire; A housing having a receiving space for accommodating the connection portion of the wire and the terminal; A sealing component that seals the opening of the receiving space to isolate the connecting portion housed in the receiving space from the outside; as well as A heat storage component, which is located within the accommodating space. The heat storage component is press-fitted between the inner wall surface of the housing and the surface of the terminal, and The inner wall surface defines the accommodating space.

2. The connector according to claim 1, further comprising: A heat transfer component located within the receiving space to fill at least a portion of the gaps remaining in the receiving space around the heat storage component.

3. The connector according to claim 2, wherein, The heat transfer component includes: Flexible substrates; and A heat transfer medium having heat transfer properties and being mixed with the substrate.

4. The connector according to claim 2, wherein, The heat transfer component has a mesh material formed from wires with heat transfer properties.

5. The connector according to claim 4, wherein, The mesh material is conductive, and The heat transfer component is located in the gap, and the heat transfer component is located between the wire and the terminal.

6. The connector according to claim 2, wherein, The heat transfer component has: a porous sheet; and a coating material that has heat transfer properties and covers the porous sheet.

7. The connector according to claim 2, wherein, The heat transfer component includes: a porous sheet; and an impregnating material capable of heat storage and impregnated in the sheet.

8. The connector according to claim 1, wherein, The heat storage component has: a cover portion capable of storing sensible heat and at least partially in contact with the connecting portion; And a sealing part that can store latent heat and is sealed inside the cover.

9. The connector according to claim 1, wherein, The heat storage component has a tubular shape surrounding the connection portion, and The sealing member is configured to contact at least a portion of at least one of the inner and outer peripheral surfaces of the heat storage member.

10. The connector according to claim 1, wherein, The heat storage component has a protrusion extending toward the housing, and The housing has a recess for receiving the protrusion.

11. The connector according to claim 10, wherein, The terminal is connected to the wire by crimping the terminal to the wire, and the terminal has a recessed crimping mark on its surface. The heat storage component is pressure-fitted to make pressure contact with the concave surface of the crimped area.

12. The connector according to claim 11, wherein, The heat storage component has a protrusion that extends toward the crimped area, and The protrusion and the pressure The concave surface of the joint makes surface contact.

13. The connector according to claim 12, wherein, The number of protrusions in the heat storage component is the same as the number of crimp marks.

14. The connector according to any one of claims 1 to 13, further comprising: a retainer that prevents displacement of the sealing member, wherein the heat accumulating member has an extension that penetrates the sealing member and contacts the retainer, and the retainer has a heat accumulating portion at a contact site between the retainer and the extension, the heat accumulating portion being capable of accumulating heat.

15. The connector according to any one of claims 1 to 14, wherein the heat accumulating member has a heat accumulating portion that is capable of accumulating heat, and the heat accumulating portion is located at a contact site between the heat accumulating member and the retainer.

16. The connector according to any one of claims 1 to 15, wherein the heat accumulating member has a heat accumulating portion that is capable of accumulating heat, and the heat accumulating portion is located at a contact site between the heat accumulating member and the retainer.

17. The connector according to any one of claims 1 to 16, wherein the heat accumulating member has a heat accumulating portion

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