JP6247937B2 - Vehicle charging device - Google Patents

Description

  The present invention relates to a charging device for a vehicle used when charging a battery mounted on a vehicle such as an electric vehicle or a plug-in hybrid vehicle.

  With the spread of vehicles such as electric vehicles and plug-in hybrid vehicles that can be driven by the driving force of an electric motor, there is a demand for the spread of a vehicle charging device that charges a battery mounted on the vehicle.

  As this vehicle charging device, a hook for holding a charging cable is provided at the lower part of the device main body fixed to the installation surface such as a house side or a wall surface of a parking lot, and the charging cable wound around the hook is held. It is known that charging is performed by removing a hook and connecting a charging connector provided at the tip of a charging cable to a vehicle connector (see Patent Documents 1 to 3).

JP2013-70589A JP 2011-50125 A JP 2012-213285 A

  By the way, in some vehicle charging devices, there is one in which a hook is conductively connected to a ground terminal of a terminal block provided in the device main body through a highly rigid bus bar in order to ensure safety. In the case of such a vehicle charging device, if the charging cable held on the hook is pulled during the charging operation of the vehicle battery and an excessive force is applied to the hook or vibration is applied, it is connected to the hook. Since the formed bus bar is fixed to the terminal block, the impact and vibration on the hook propagate through the bus bar and are transmitted to the terminal block. For this reason, there is a possibility that the fixing screw of the terminal block is loosened or the terminal block itself is damaged.

  The present invention has been made in view of the above-described circumstances, and its purpose is to prevent the fixing screws of the terminal block from being loosened even if an excessive force acts on the hook for holding the charging cable or vibration is applied. An object of the present invention is to provide a vehicle charging device that can suppress damage to the terminal block itself.

In order to achieve the above-described object, a vehicle charging device according to the present invention is characterized by the following (1) to (4).
(1) The main body of the device incorporating the charger in the housing,
A charging cable extending from the device body;
A charging connector provided at the tip of the charging cable and detachable from the connector of the vehicle;
A hook that extends downward from a lower portion of the housing and can hold the charging cable;
With
The hook is fixed to the housing via a hook fixing bracket made of a metal plate,
The apparatus body has a terminal block including a ground terminal,
The charging device for a vehicle, wherein the hook fixing metal fitting and the ground terminal are connected by a conductive member having rigidity lower than that of the hook fixing metal fitting.
(2) The vehicle charging device according to (1), wherein the conductive member includes an electric wire.
(3) The vehicle charging device according to (1), wherein the conductive member includes a spring.
(4) The hook fixing bracket is disposed along the extending direction of the hook, and is screwed and fixed to the housing at least at three locations.
Any one of (1) to (3) above, wherein at least three places where the hook fixing metal fittings are fixed to the housing by screws are in positions where the shape formed by connecting the three places is a triangle. The vehicle charging device according to claim 1.

In the vehicle charging device having the configuration (1), the hook is connected to the ground terminal via the hook fixing bracket and grounded, so that leakage to the hook is prevented and safety is ensured. In addition, since the hook fixing bracket and the ground terminal are connected by a conductive member having a lower rigidity than the hook fixing bracket, even if an external force or vibration acts on the hook, the external force and the By absorbing the vibration, loosening of the ground terminal of the terminal block of the apparatus main body and damage to the terminal block can be prevented.
In the vehicle charging device having the configuration (2), the hook fixing bracket and the grounding terminal can be satisfactorily conducted by the conductive member made of an electric wire. Even if the hook fixing bracket is deformed by an external force or vibration acting on the hook, or the hook fixing bracket is detached from the housing, the electric wire smoothly deforms or breaks, preventing damage to the terminal block of the apparatus main body. be able to.
In the vehicle charging device having the configuration (3), the hook fixing bracket and the ground terminal can be satisfactorily conducted by the conductive member made of a spring. Even if an external force or vibration is applied to the hook, the grounding terminal of the terminal block of the device body or damage to the terminal block can be prevented by absorbing the external force and vibration with a conductive member made of a spring. it can.
In the vehicle charging apparatus having the configuration (4), the hook can be fixed to the housing of the apparatus main body in a stable state with sufficient strength by the hook fixing bracket. Also, even if a large external force or vibration is applied to the hook due to the charging cable being pulled during the charging operation, the external force or vibration is transmitted to the hook fixing bracket, and the direction in which the hook extends and the direction orthogonal to the direction of extension Dispersed in fixed places in at least three places with the displaced base. At this time, by providing the two holes below the base so as not to be positioned horizontally, when an external force is applied to the hook, the external force applied to the screw is relieved by the lever principle. Accordingly, it is possible to prevent loosening of the screw of the base due to an external force, as compared with the case where the two locations of the base are fixed horizontally.

  According to the present invention, even if an excessive force acts on the holding hook of the charging cable or vibration is applied, the vehicle charging can suppress the looseness of the ground terminal of the terminal block and the damage of the terminal block. Equipment can be provided.

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

FIG. 1 is a perspective view of the vehicle charging device according to the present embodiment. FIG. 2 is an exploded perspective view of the apparatus main body. FIG. 3 is a perspective view of the base. 4 (a) to 4 (c) are diagrams for explaining the structure of the base. FIG. 4 (a) is a front view, FIG. 4 (b) is a side sectional view, and FIG. 4 (c) is a side view. FIG. FIG. 5 is a front view of the lower portion of the base. FIG. 6 is a perspective view of the lower part of the base. FIG. 7 is a perspective view of the apparatus main body with the cover removed.

Hereinafter, an example of an embodiment according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of the vehicle charging device according to the present embodiment. FIG. 2 is an exploded perspective view of the apparatus main body.

  As shown in FIGS. 1 and 2, the vehicle charging device 10 according to the present embodiment includes a device main body 11, a charging cable 12, and a charging connector 13. The vehicle charging device 10 is a charging device that charges a battery mounted on a vehicle such as an electric vehicle or a plug-in hybrid vehicle that can run with the driving force of an electric motor.

  The apparatus main body 11 is fixed to an installation surface such as a wall side in a house side such as a general house or a parking lot, for example. The apparatus main body 11 has a built-in charger 32, and has a monitor unit 15 for displaying a charging state and the like on the front surface. The charging cable 12 extends from the lower part of the apparatus main body 11, and the charging connector 13 is provided at the tip of the charging cable 12.

  The apparatus main body 11 includes a connector holding portion 16, and the charging connector 13 is held by the connector holding portion 16. When charging the vehicle battery, the charging connector 13 is detached from the connector holding portion 16 of the apparatus main body 11 and connected to the vehicle connector. After the charging of the vehicle battery is completed, the charging connector 13 is detached from the vehicle connector and is held by the connector holding portion 16 of the apparatus main body 11.

  The apparatus main body 11 includes a housing 31 and a charger 32 including a control device and the like housed in the housing 31. The base end of the charging cable 12 is connected to the lower part of the charger 32.

  In the vehicle charging apparatus 10, power is supplied from the charger 32 of the apparatus main body 11 to the vehicle side via the charging cable 12 with the charging connector 13 connected to the vehicle connector. Thereby, the battery of the vehicle is charged.

  The device main body 11 of the vehicle charging device 10 includes a first holding unit 21 and a second holding unit 22. The first holding unit 21 and the second holding unit 22 can both hold the charging cable 12.

  The first holding unit 21 includes a hook 23 and is provided at the lower part of the apparatus main body 11. For example, the hook 23 is formed in a U shape by bending a single bar made of metal such as stainless steel at the center, and further formed in a J shape in a side view by bending the tip so as to be folded back. The folded portion is the locking portion 24. The hook 23 is fixed to the lower end portion of the housing 31 constituting the apparatus main body 11. The hook 23 extends downward from a place where it is fixed to the housing 31, and the locking portion 24 is disposed toward the front side of the apparatus main body 11. The charging cable 12 is held by locking the charging cable 12 to the locking portion 24 of the hook 23.

  FIG. 3 is a perspective view of the base. 4 (a) to 4 (c) are diagrams for explaining the structure of the base. FIG. 4 (a) is a front view, FIG. 4 (b) is a side sectional view, and FIG. 4 (c) is a side view. FIG. FIG. 5 is a front view of the lower portion of the base. FIG. 6 is a perspective view of the lower part of the base.

  As shown in FIGS. 3 and 4A to 4C, the base 33 has a bottom plate portion 41 fixed to the installation surface 71 and a peripheral wall 42 erected on the periphery of the bottom plate portion 41. doing. In addition, the base 33 is formed with a groove portion 26 serving as the second holding portion 22 described above.

  A plurality of fixing portions 43 are provided on the bottom plate portion 41, and the base 33 is fixed to the installation surface 71 by screwing the screws 44 inserted into the fixing portions 43 into the installation surface 71. Note that the fixing of the base 33 to the installation surface 71 with the screw 44 is not necessarily performed by all the fixing portions 43 as long as the fixing strength to the installation surface 71 is sufficiently obtained.

  As shown in FIGS. 5 and 6, a hook fixing bracket 45 made of a metal plate made of a metal such as stainless steel is fixed to the lower portion of the base 33 with screws 46. The hook fixing bracket 45 has a bracket main body 45a and an extending portion 45b extending upward from the bracket main body 45a. The hook fixing metal 45 is arranged along the up-down direction that is the extending direction of the hook 23.

  The hook main body 45a of the hook fixing metal 45 is provided with two hook fixing portions 47 that are bent and raised with respect to the metal main body 45a at the lower end thereof. The end of 23 is fastened and fixed by a nut 48. In addition, the extending portion 45b of the hook fixing metal fitting 45 is formed with a ground wire connecting piece 45c protruding laterally at the end opposite to the metal fitting main body 45a.

  The hook fixing bracket 45 has three screw insertion holes 45d (see FIG. 3). Two screw insertion holes 45d are formed in the metal fitting body 45a, and one screw insertion hole 45d is formed in the extending portion 45b. In addition, screw holes 41a are formed in the bottom plate portion 41 of the base 33 at three locations corresponding to the screw insertion holes 45d of the hook fixture 45 (see FIG. 4A).

  The hook fixing bracket 45 is fixed to the bottom plate portion 41 by screwing the screw 46 inserted into the screw insertion hole 45 d into the screw hole 41 a of the bottom plate portion 41 of the base 33. Thereby, the hook fixing metal fitting 45 is fixed to the base 33 by the screw 46 at two places of the metal fitting main body 45a and one part of the extending portion 45b. The fixing points by these screws 46 are provided such that any two fixing points intersect with the extending direction of the hook 23 and the direction orthogonal to the extending direction. Specifically, in the bottom plate portion 41 of the base 33, the two fixed places are arranged so as to be at the apex position of the triangle in front view so as to intersect the vertical direction and the horizontal direction. As a result, even if the charging cable 12 is pulled and a large external force acts on the hook 23, the external force is transmitted to the hook fixing bracket 45, and is distributed to three fixing points with the base 33. In this way, the hook 23 is fixed to the base 33 with sufficient strength via the hook fixing bracket 45.

  Further, a communication port 49 is formed in the lower part of the base 33. A power supply line 61 extending from the installation surface is introduced into the line 49. The power supply line 61 is passed through the corrugated tube 62, and an end portion of the corrugated tube 62 is inserted into the wire opening 49 and fixed. The charger 32 includes a terminal block 66 having a plurality of terminals 65. The power supply line 61 and the ground line 67 are fastened and fixed to the terminal 65 of the terminal block 66. One of the terminals 65 is a ground terminal 65a, and a ground line 61a of the power supply line 61 is connected to the ground terminal 65a.

  Further, one end of a ground wire (conductive member) 67 is connected to the ground terminal 65a together with the ground wire 61a so as to be conductively connected. The ground wire 67 is a general electric wire in which a conductor is insulated and is sufficiently lower in rigidity than the hook fixing bracket 45. The other end of the ground wire 67 is conductively connected to the ground wire connecting piece 45 c of the hook fixing bracket 45. As a result, the hook fixing bracket 45 is electrically connected to the earth terminal 65a by the earth wire 67, and thus the hook 23 is electrically connected to the earth terminal 65a via the hook fixing metal 45 and grounded. Thereby, electric leakage to the hook 23 is prevented and safety is ensured.

FIG. 7 is a perspective view of the apparatus main body with the cover removed.
As shown in FIG. 7, the charger 32 is fitted into the base 33 from the front side. Further, a waterproof cover 52 is screwed and fixed to the lower portion of the base 33 with screws 51, and the terminal block 66, the power supply wire 61, the ground wire 67, the ground wire connecting piece 45 c of the hook fixing bracket 45, etc. The wiring part is covered and waterproofed. Then, by attaching the cover 34 to the base 33 from the front side, the charger 32 is housed inside the housing 31 composed of the base 33 and the cover 34.

  The vehicle charging device 10 includes a first holding portion 21 including a hook 23 and a second holding portion 22 including a groove portion 26 in the apparatus main body 11. Therefore, in this vehicle charging device 10, the base end side of the charging cable 12 is wound and locked on the first holding portion 21 formed of the hook 23, and the distal end side of the charging cable 12 is formed of the groove portion 26. It can be held by the second holding unit 22. The second holding portion 22 is for charging with a length (for example, about 2 m) that allows the charging connector 13 to reach the vehicle connector in a state where the vehicle connector is disposed at a position close to the vehicle charging device 10. The cable 12 is held.

  In the above vehicle charging device 10, the charging connector 13 is removed from the connector holding portion 16, the charging cable 12 is removed from the second holding portion 22, and the charging connector 13 is connected to the vehicle connector to the vehicle battery. Charge the battery. Further, when the connector of the vehicle is disposed at a position far away from the vehicle charging device 10, the charging cable 12 is removed from the second holding unit 22 and further removed from the first holding unit 21. If it does in this way, the connector 13 for charging can be reached and connected to the connector of the vehicle arrange | positioned in the position far away from the charging device 10 for vehicles.

  As described above, according to the vehicle charging apparatus according to the present embodiment, the hook 23 is electrically connected to the ground terminal 65a through the hook fixing bracket 45 and grounded, so that leakage to the hook 23 is prevented. Safety. Further, since the hook fixing bracket 45 and the ground terminal 65a are connected by a ground wire 67 made of an electric wire having lower rigidity than the hook fixing bracket 45, even if an external force or vibration acts on the hook 23, the rigidity is low. By absorbing the external force and vibration by the conductive member, the ground terminal 65a of the terminal block 66 of the apparatus body 11 is loosened (that is, the screw that fastens and fixes the ground terminal 65a to the terminal 65 of the terminal block 66) or the terminal. Damage to the base 66 can be prevented.

  In the above-described embodiment, an electric wire is used as a conductive member for conductively connecting the ground wire connecting piece 45c of the hook fixing bracket 45 and the ground terminal 65a of the terminal block 66. However, a conductive spring is used as the conductive member. May be used. Even when a conductive member made of a spring is used, the hook fixing bracket 45 and the ground terminal 65a can be made to conduct well, and even if an external force or vibration acts on the hook 23, the conductive member made of a spring. Thus, by absorbing external force and vibration, the ground terminal 65a of the terminal block 66 of the apparatus body 11 is loosened (that is, the screw that fastens and fixes the ground terminal 65a to the terminal 65 of the terminal block 66) or the terminal block 66. Damage can be prevented.

  Moreover, in the said embodiment, although the hook fixing metal fitting 45 was fixed to the base 33 at three places, the fixing place of the hook fixing metal fitting 45 may be four or more places. In this case, it suffices if any three locations are arranged so as to be the vertex positions of the triangle in front view.

  In the above embodiment, the hook 23 can be fixed to the housing 31 of the apparatus main body 11 in a stable state with sufficient strength by the hook fixing bracket 45. Further, even if a large external force or vibration is applied to the hook 23 due to the charging cable 12 being pulled during the charging operation, the external force or vibration is transmitted to the hook fixing bracket 45, and the three fixing points with the base 33 are applied. Distributed. At this time, by providing the two holes below the base so as not to be positioned horizontally, when an external force is applied to the hook, the external force applied to the screw is relieved by the lever principle. Therefore, as compared with the case where the two places of the base 33 are fixed horizontally, it is possible to prevent the screws from being loosened or damaged due to the external force of components such as the casing 31 and the terminal block 66.

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

Here, the features of the above-described embodiment of the vehicle charging device according to the present invention are summarized and listed in the following (1) to (4), respectively.
(1) A device body (11) in which a charger (32) is built in a housing (31);
A charging cable (12) extending from the apparatus body;
A charging connector (13) provided at the tip of the charging cable and detachable from the connector of the vehicle;
A hook (23) extending downward from a lower portion of the housing and capable of holding the charging cable;
With
The hook is fixed to the housing via a hook fixing bracket (45) made of a metal plate,
The apparatus main body has a terminal block (66) including a ground terminal (65a),
The charging device for a vehicle, wherein the hook fixing metal fitting and the ground terminal are connected by a conductive member having rigidity lower than that of the hook fixing metal fitting.
(2) The vehicle charging device according to (1), wherein the conductive member includes an electric wire.
(3) The vehicle charging device according to (1), wherein the conductive member includes a spring.
(4) The hook fixing bracket is disposed along the extending direction of the hook, and is screwed and fixed to the housing at least at three locations.
Any one of (1) to (3) above, wherein at least three places where the hook fixing metal fittings are fixed to the housing by screws are in positions where the shape formed by connecting the three places is a triangle. The vehicle charging device according to claim 1.

DESCRIPTION OF SYMBOLS 10 Vehicle charging device 11 Device main body 12 Charging cable 13 Charging connector 23 Hook 31 Housing 32 Charger 45 Hook fixing bracket 65a Ground terminal 66 Terminal block 67 Ground wire (conductive member)

Claims (4)

A device body with a built-in charger inside the housing;
A charging cable extending from the device body;
A charging connector provided at the tip of the charging cable and detachable from the connector of the vehicle;
A hook that extends downward from a lower portion of the housing and can hold the charging cable;
With
The hook is fixed to the housing via a hook fixing bracket made of a metal plate,
The apparatus body has a terminal block including a ground terminal,
The charging device for a vehicle, wherein the hook fixing metal fitting and the ground terminal are connected by a conductive member having rigidity lower than that of the hook fixing metal fitting. The vehicle charging device according to claim 1, wherein the conductive member is an electric wire. The vehicle charging device according to claim 1, wherein the conductive member includes a spring. The hook fixing bracket is disposed along the extending direction of the hook, and is fixed to the housing with screws at at least three locations.
The at least three places where the hook fixing metal fittings are fixed to the housing by screws are in positions where the shape formed by connecting the three places is a triangle. The vehicle charging device described in 1.

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