JP5503612B2 - Electric circuit breaker for vehicle - Google Patents

Description

  The present invention relates to an electric circuit interrupting device capable of interrupting / connecting an electric circuit for a vehicle.

  In a vehicle (for example, an electric vehicle) equipped with a large-capacity battery for driving a motor, a circuit breaker (service plug device) that opens a power supply circuit is provided in order to ensure safety when maintaining a high-voltage electric circuit. May be provided. Patent Documents 1 and 2 disclose this type of circuit breaker.

JP 2010-287348 A JP 2002-343169 A

  In the configurations of Patent Documents 1 and 2, a structure in which the female terminal side is bent into an R shape to have a leaf spring shape is used. This leads to a complicated configuration, and there is room for improvement from the viewpoint of cost reduction. On the other hand, an electric circuit breaker for a vehicle needs to be configured so that a large current can be opened and closed without any problem.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicular electric circuit breaker capable of handling a large current while using inexpensive components.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

According to an aspect of the present invention, a vehicle electric circuit breaker having the following configuration is provided. That is, this electric circuit breaker for a vehicle is configured such that an electric circuit is energized by attaching the plug housing to a jack housing attached to the vehicle side, and the electric circuit is interrupted by removing the plug housing. The At least one of the jack housing and the plug housing is provided with a composite terminal having a configuration in which conductive tuning fork plate members having tuning fork-like portions are arranged in the thickness direction. In the composite terminal, a spacer having a shape having no tuning fork portion is disposed between the tuning fork flat plate members arranged.

Thereby, cost reduction is realizable by using the structure of the tuning fork terminal widely used widely. In addition, since a plurality of tuning fork flat plate members are arranged, it is possible to provide an electric circuit breaker for a vehicle that can cope with opening and closing of a large current. Furthermore, since an appropriate gap in the thickness direction is formed around the tuning fork portion, the force required for insertion / removal can be reduced.

  In the vehicle electric circuit breaker, it is preferable that the tuning fork plate members arranged in the composite terminal have the same shape.

  Thereby, further cost reduction can be easily realized.

  In the electric circuit breaker for a vehicle described above, the tuning fork flat plate member constituting the composite terminal has a plurality of tuning fork-like portions, and one tuning fork flat plate member can be fitted to a plurality of mating terminals. Preferably there is.

  Thereby, the other party terminals can be electrically connected to each other reliably.

  In the electric circuit breaker for a vehicle, the plurality of tuning fork flat plate members constituting the composite terminal are fitted to the mating terminal with a time difference in the process of mounting the plug housing to the jack housing. It can also be configured to.

  In this case, since the force required for inserting / removing the terminal can be reduced, the operation of mounting / removing the plug portion with respect to the jack portion is further smoothed.

1 is a perspective view showing an overall configuration of a service plug device according to an embodiment of the present invention. The disassembled perspective view which shows the structure of a jack part and a plug part. The disassembled perspective view which shows the structure of the plug side composite terminal with which a plug part is provided in detail. The perspective view which shows a mode that the front-end | tip of the plug part was inserted in the jack part. The perspective view which shows a mode that a telescopic lever is fallen from the state of FIG. 4, and a plug part is pushed in to a jack part. The perspective view which shows the state which retracted the expansion-contraction lever from the state of FIG. 5, and completed the installation operation | work of a plug part.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an overall configuration of a service plug device 5 according to an embodiment of the present invention. FIG. 2 is an exploded perspective view showing configurations of the jack portion 1 and the plug portion 2.

  A service plug device (vehicle electric circuit breaker) 5 shown in FIG. 1 includes a jack portion 1 and a plug portion 2. The jack portion 1 is attached to an appropriate position on the vehicle side, and the plug portion 2 is configured to be detachable from the jack portion 1.

  In the following description, the positional relationship of each component and the direction of the operation will be described on the assumption that the jack portion 1 is positioned downward and the plug portion 2 is positioned upward as shown in the drawings. is there. In this positional relationship, the plug portion 2 is inserted and removed from the jack portion 1 in the vertical direction. However, the mounting direction of the service plug device 5 with respect to the vehicle is arbitrary, and is not limited to the direction disclosed in the present specification.

  As shown in FIG. 2 and the like, the jack portion 1 includes a jack housing 11 and a tab terminal 12.

  The jack housing 11 is integrally provided with a housing main body 21 and a lock piece 23. The housing main body 21 is formed in a hollow elliptical column shape, and two pairs (four) of tab terminals 12 are accommodated in the inside thereof. Although details will be described later, a plug housing 61 provided in the plug portion 2 can be inserted into the housing body 21.

  The lock piece 23 is formed so as to protrude from the housing main body 21 in one direction. The distal end portion of the lock piece 23 is configured to be able to fit into a lock protrusion 91 provided in the plug portion 2 described later.

  The two pairs of tab terminals 12 are formed in a flat plate shape from a conductive material, and are electrically connected to an electric circuit (for example, a battery) (not shown) on the vehicle side. When the vehicle is normally used, the plug portion 2 is attached to the jack portion 1 so that the paired tab terminals 12 are electrically connected to each other (by a plug-side composite terminal 62 to be described later). Is closed and energized. On the other hand, when the vehicle is being maintained, etc., the plug circuit 2 is removed from the jack section 1 so that the electric circuit of the vehicle is opened and a cut-off state is realized.

  Inside the housing body 21, hollow insulating projections 24 having a rectangular cross section are formed so as to correspond to the respective tab terminals 12. Each insulating protrusion 24 has a shape in which the upper side (plug part 2 side) is opened. The tab terminal 12 is disposed inside the insulating protrusion 24, thereby preventing an operator from directly touching the tab terminal 12 as a live part.

  The housing body 21 is formed with a pair of connecting projections 42, 42. The connection protrusion 42 can be connected to an extendable lever (handle) 67 provided in the plug portion 2 described later.

  The plug portion 2 includes a plug housing 61, a plug-side composite terminal 62, two seal rings 65 and 81, a cover 66, and a telescopic lever 67.

  The plug housing 61 is formed in an elliptical column shape corresponding to the jack housing 11 described above. The distal end portion of the plug housing 61 can be inserted into the internal space of the housing body 21 of the jack housing 11.

  The plug housing 61 is formed in a hollow shape, and two plug-side composite terminals 62 and 62 are arranged side by side inside thereof. As shown in FIG. 3, each plug-side composite terminal 62 has a configuration in which a plurality of conductive tuning fork plate members 31 having a predetermined thickness are arranged in the thickness direction. Each tuning-fork flat plate member 31 constituting the plug-side composite terminal 62 has two tuning-fork-like portions 36, 36, and is simultaneously connected to the tab terminals 12, 12 arranged in pairs in the jack portion 1. can do. The detailed configuration of the plug-side composite terminal 62 will be described later.

  The seal ring 65 is attached to the outer peripheral surface of the plug housing 61. The seal ring 65 is in close contact with both the plug housing 61 and the cover 66 when the cover 66 is attached to the plug housing 61, and prevents dust and the like from entering the cover 66.

  Another seal ring 81 is disposed on the outer peripheral surface of the distal end portion of the plug housing 61. The seal ring 81 is in close contact with the jack housing 11 when the plug housing 61 is attached to the jack housing 11 (housing main body 21), and prevents foreign matters such as dust from entering.

  The cover 66 is fixed to the plug housing 61 so as to cover the plug-side composite terminal 62. A pair of support shafts 82 and 82 are formed on both sides of the cover 66 in a convex shape, and the telescopic lever 67 is attached to the support shaft 82.

  The telescopic lever 67 includes a first lever 71 on the base side and a second lever 72 on the tip side.

  The first lever 71 includes a pair of elongated arm members 85, 85 extending in parallel and a connecting member 86 that connects one end of these arm members 85, 85. A support hole 87 is formed in each of the arm members 85, 85, and this support hole 87 is attached to the support shaft 82 provided in the cover 66 described above. As a result, the first lever 71 is rotatably attached to the cover 66.

  The arm members 85 and 85 are respectively formed with elongated cam grooves 88 and 88 formed in a curved shape. Each cam groove 88 is open at one end, and the connection protrusion 42 provided in the jack housing 11 of the jack portion 1 can be inserted into the cam groove 88.

  Similarly to the first lever 71, the second lever 72 includes a pair of elongated arm members 89 and 89 that extend in parallel, and a connecting member 90 that connects one end of the arm members 89 and 89 to each other. Each of the arm members 89 and 89 is configured to be slidable along the arm members 85 and 85 of the first lever 71. As a result, the second lever 72 is slid with respect to the first lever 71, so that the telescopic lever is provided. 67 can be expanded and contracted.

  The connecting member 90 of the second lever 72 is formed with a block-shaped lock protrusion 91 that protrudes toward the base side of the telescopic lever 67. A recess 92 is formed in the first lever 71, and the lock protrusion 91 can be inserted into the recess 92. Further, a recess 93 is formed on the front end side of the lock protrusion 91 in the protruding direction. The recess 93 can be covered with the lock piece 23 provided in the jack housing 11 of the jack 1 when the telescopic lever 67 is in a specific state.

  Next, the plug-side composite terminal 62 provided in the plug portion 2 will be described in detail with reference to FIG.

  The plug-side composite terminal 62 has a configuration in which a large number of tuning fork plate members 31, 31,... And a large number of spacers 32, 32 are alternately arranged and connected in a straight line. In the present embodiment, the tuning fork flat plate member 31 and the spacer 32 are configured by inexpensive press processing, thereby reducing the manufacturing cost.

  The tuning fork flat plate member 31 is formed of a conductive metal in a flat plate shape. The tuning fork flat plate member 31 has a configuration in which a rectangular base portion 35 and tuning fork portions 36 and 36 protruding from the base portion 35 are integrally formed. The plurality of tuning fork flat plate members 31, 31... Arranged side by side have the same shape.

  A circular connection hole is formed in the center portion of the base portion 35 in a penetrating manner. Further, in the present embodiment, each of the plurality of tuning fork flat plate members 31 has two tuning fork portions 36 and 36 formed so as to extend from the base portion 35 in parallel to each other. Accordingly, each tuning fork plate member 31 can be connected to the two tab terminals 12 and 12 simultaneously.

  Similarly to the tuning fork flat plate member 31, the spacer 32 is also formed in a flat plate shape with a conductive metal. The spacer 32 has the same thickness as the tuning fork flat plate member 31. Further, the spacer 32 is shaped such that the tuning fork plate 36 is omitted from the tuning fork plate member 31 and only the base portion 35 is left.

  With the above configuration, the tuning fork flat plate members 31 and the spacers 32 are alternately arranged so that the positions of the connecting holes are aligned, and the mounting bolts 33 are inserted into the connecting holes and fixed with the nuts 34, so that the plug side The composite terminal 62 is completed. The plug-side composite terminal 62 is disposed on the plug housing 61 so that the tuning fork-like portion 36 faces downward (the jack portion 1 side).

  Since the plug-side composite terminal 62 contacts the tab terminal 12 at a number of locations, a large current can be opened and closed without any problem. On the other hand, since the spacer 32 is disposed between the adjacent tuning fork flat plate members 31, a gap in the thickness direction is formed around the tuning fork portion 36. Therefore, the number of contact points with respect to the tab terminal 12 is not too many, and the force necessary for fitting / unmating is not excessive. Further, since the adjacent tuning fork portions 36 are not in contact with each other, frictional resistance does not occur between the tuning fork portions 36 when the plug-side composite terminal 62 is fitted to the tab terminal 12. Accordingly, each tuning fork-like portion 36 can be fitted to the tab terminal 12 while being smoothly opened, and in this sense, the force required for fitting / releasing can be reduced.

  Further, the tuning fork flat plate member 31 of each sheet can be used as it is as it is originally used alone as a tuning fork terminal. Therefore, a terminal capable of handling the large current can be realized at a low cost.

  Next, an operation (fitting operation) for mounting the plug portion 2 to the jack portion 1 in the service plug device 5 configured as described above will be described with reference to FIGS. 4 to 6. FIGS. 1 and 4 to 6 show the work of attaching the plug portion 2 to the jack portion 1 and switching from the cut-off state to the energized state step by step.

  First, the blocking state in which the plug portion 2 is pulled out from the jack portion 1 will be described with reference to FIG. In the state shown in FIG. 1, in the plug portion 2, the telescopic lever 67 is in a substantially upright posture and slightly extended.

  From the state of FIG. 1 described above, the operator holds the telescopic lever 67 of the plug portion 2 by hand, and inserts the tip end portion of the plug housing 61 into the jack housing 11 provided in the jack portion 1. When the plug housing 61 is inserted to some extent, as shown in FIG. 4, the end of the cam groove 88 formed in the first lever 71 comes close to the connection protrusion 42 of the jack portion 1.

  Next, the operator inserts the connecting protrusion 42 into one end of the cam groove 88 so that the entire plug portion 2 is slightly pushed into the jack portion 1 side. When the connection protrusion 42 is connected to the cam groove 88 in this manner, the operator then tilts the telescopic lever 67 to one side (the side on which the lock piece 23 is disposed). Then, the entire plug portion 2 is strongly pushed into the jack portion 1 side by the cam action of the cam groove 88, so that the tuning fork-like portion 36 of the plug-side composite terminal 62 is insulated from the jack housing 11 as shown in FIG. The protrusion 24 (FIG. 1) is inserted from above and connected to the tab terminals 12 and 12. As a result, the electric circuit is closed and energized.

  As shown in FIG. 4, the telescopic lever 67 is tilted in the extended state. Therefore, the operator can work smoothly with a small operation force by using the lever principle by applying a force to the distal end side of the telescopic lever 67 in the extended state.

  FIG. 5 shows a state in which the telescopic lever 67 is tilted so as to be in a substantially horizontal posture. As the telescopic lever 67 is tilted in this way, the cam groove 88 is oriented in the lateral direction with its open side maintained while being connected to the connecting protrusion 42. As a result, the electrical connection between the plug-side composite terminal 62 and the tab terminal 12 can be locked so as not to be released.

  Next, the operator slides the second lever 72 toward the first lever 71 to bring the telescopic lever 67 into a contracted state. As a result, the lock protrusion 91 formed on the second lever 72 protrudes through the recess 92 of the first lever 71 and covers the lock piece 23 as shown in FIG. By this fitting, the telescopic lever 67 is mechanically locked so as not to move.

  As described above, the operation of attaching the plug portion 2 to the jack portion 1 is completed. In addition, what is necessary is just to perform the operation | work reverse to the above, when removing the plug part 2 from the jack part 1. FIG. Briefly, the operator first slides the second lever 72 from the state shown in FIG. 6 to extend the telescopic lever 67 (FIG. 5). As a result, the lock piece 23 is disengaged from the lock protrusion 91, so that the telescopic lever 67 is unlocked. Next, the worker rotates the telescopic lever 67 in the extended state to almost stand up (FIG. 4). Thereby, since the plug part 2 is pulled out strongly from the jack part 1, the fitting of the plug side composite terminal 62 and the tab terminal 12 is cancelled | released, As a result, an electric circuit is opened and it will be in the interruption | blocking state. Next, the operator pulls the plug part 2 upward from the jack part 1 (FIG. 1). At this time, the connection protrusion 42 is removed from the cam groove 88, and the connection between the connection protrusion 42 and the telescopic lever 67 is released.

  Thus, in this embodiment, one plug-side composite terminal 62 is configured by arranging a large number of members (tuning fork flat plate members 31) that are generally used as tuning fork terminals in the thickness direction. As a result, the service plug device 5 suitable for opening and closing a large current can be provided while effectively reducing costs by using general-purpose components.

  As described above, the service plug device 5 of the present embodiment is electrically connected to the jack housing 11 attached to the vehicle side by attaching the plug housing 61 to the electrical circuit, and removing the plug housing 61 to The circuit is configured to shut off. The plug housing 61 is provided with a plug-side composite terminal 62 having a configuration in which conductive tuning fork flat plate members 31, 31... Having tuning fork-like portions 36, 36 are connected side by side in the thickness direction.

  Thereby, cost reduction is realizable by using the structure of the tuning fork terminal widely used widely. Further, since a plurality of tuning fork flat plate members 31 are arranged, it is possible to provide the service plug device 5 that can cope with opening and closing of a large current.

  Further, in the plug-side composite terminal 62 shown in the present embodiment, the tuning fork flat plate members 31, 31,.

  Thereby, further cost reduction can be easily realized.

  Further, in the plug-side composite terminal 62 shown in the present embodiment, a spacer 32 having a shape that does not have the tuning fork portions 36 and 36 is disposed between the tuning fork flat plate members 31 arranged.

  As a result, an appropriate gap in the thickness direction is formed around the tuning fork-like portion 36, so that the force required for insertion / removal can be reduced.

  Further, in the service plug device 5 of the present embodiment, the tuning fork plate members 31, 31... Constituting the plug-side composite terminal 62 have a plurality of tuning fork-like portions 36, 36, and one tuning fork plate member. 31 is configured to be able to fit into the plurality of mating tab terminals 12, 12.

  Thereby, tab terminal 12 used as a pair can be electrically connected reliably.

  In the plug portion 2 having the configuration shown in FIG. 1, in the above-described fitting operation, the large number of tuning fork plate members 31 constituting the plug-side composite terminal 62 have the tuning fork-like portions 36, 36 simultaneously with the tab terminal 12. Will be fitted. On the other hand, for example, by arranging the plug-side composite terminal 62 in the plug housing 61 so as to be slightly inclined, the respective tuning-fork flat plate members 31 can be sequentially fitted with a slight time difference.

  In this case, since the force required for inserting / removing the terminal can be reduced, the operation of attaching / detaching the plug portion 2 to / from the jack portion 1 becomes smoother.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

  In the plug-side composite terminal 62 of the above embodiment, the tuning fork flat plate members 31 and the spacers 32 are alternately arranged one by one. However, instead of this, two tuning fork plate members 31, one spacer 32, two tuning fork plate members 31, etc. are alternately stacked, or one tuning fork plate member 31 and two spacers 32. One plate and the tuning fork flat plate member 31 can be alternately stacked. In this way, the tuning fork flat plate member 31 and the spacer 32 may be arranged not only in one piece but also in two or more pieces continuously, and various modifications are conceivable in the way of arrangement.

  The tab terminals 12 are not limited to having two pairs, and may be modified to have one pair, or three or more pairs.

  In the above embodiment, the composite terminal is disposed on the plug portion 2 side. However, this may be disposed on the jack portion 1 side. For example, the following configuration is conceivable. That is, a large number of tuning fork flat plate members each having only one tuning fork-like portion 36 are arranged in the thickness direction to form a jack side composite terminal, and one or more pairs of the jack side composite terminals are arranged on the jack portion 1. On the other hand, a tab terminal 12 is disposed in the plug portion 2 so that one tab terminal 12 can be fitted to both of two jack-side composite terminals in a pair at the same time.

  The plurality of tuning fork flat plate members 31 are fitted to the tab terminal 12 with a time lag as described above, in addition to the plug-side composite terminals 62 being inclined and the tuning fork flat plate members 31 being arranged one by one. It is conceivable that they are arranged offset (with a step).

  For example, the support shaft 82 may be provided in the plug housing 61 instead of being provided in the cover 66.

  In the above-described embodiment, a through circuit is installed in the lock piece 23, and a fitting detection circuit that detects the fitting between the plug portion 2 and the jack portion 1 by checking conduction / non-conduction of the through circuit is provided. May be. In this case, it is conceivable that the conduction / non-conduction state of the through circuit is switched when the tip of the lock protrusion 91 is put on the lock piece 23 and this is detected by the fitting detection circuit. Alternatively, for example, a known sensor such as a limit switch or an optical sensor is installed in the lock piece 23 instead of the through circuit, and the fitting detection circuit checks the state of this sensor so as to detect fitting / disengagement. It may be changed.

  As shown in FIG. 2, the jack housing 11 and the plug housing 61 can be changed to various shapes such as a long cylindrical shape and a rectangular shape instead of being formed in an elliptical column shape.

1 Jack part 2 Plug part 12 Tab terminal (terminal on the mating side of the plug side composite terminal)
31 Tuning fork flat plate member 32 Spacer 36 Tuning fork shaped part 62 Plug side composite terminal (composite terminal)

Claims (4)

An electric circuit breaker for a vehicle configured such that an electric circuit is energized by attaching a plug housing to a jack housing attached to a vehicle side, and the electric circuit is cut off by removing the plug housing,
At least one of the jack housing and the plug housing is provided with a composite terminal having a configuration in which conductive tuning fork plate members having tuning fork-like portions are arranged in the thickness direction ,
An electric circuit breaker for a vehicle, wherein a spacer having a tuning fork-like portion is disposed between the tuning fork flat plate members arranged in the composite terminal . The vehicle electric circuit breaker according to claim 1,
In the composite terminal, the tuning fork flat plate members arranged in the same shape have the same shape. The electric circuit breaker for a vehicle according to claim 1 or 2 ,
The tuning fork flat plate member constituting the composite terminal has a plurality of tuning fork-like portions, and one tuning fork flat plate member can be fitted to a plurality of mating terminals. Shut-off device. An electric circuit breaker for a vehicle according to any one of claims 1 to 3 ,
In the process of attaching the plug housing to the jack housing, a plurality of tuning fork flat plate members constituting the composite terminal are configured to be fitted to the counterpart terminal with a time difference. Electric circuit breaker.

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