JP3307195B2 - Breaker device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breaker device, and more particularly to an improved mechanism for locking the breaker device in an on state or an off state.

[0002]

2. Description of the Related Art As a general breaker device, a knife switch type is known. As shown in FIG. 11, a pair of electrode plates 2 and 3 are fixed on a substrate 1 at a predetermined distance from each other, and a terminal of an electric wire 4 is connected to both electrode plates 2 and 3 via a crimp terminal 5. Screwed. Also,
A plate-like lever 6 made of a conductive member is supported on one of the electrode plates 3 so as to be able to move up and down, and the other electrode plate 2 is opened upward so as to sandwich the lever 6 to be folded down from both sides. An elastic contact piece 7 is provided. When the lever 6 is turned down, the lever 6 is press-fitted between the elastic contact pieces 7 of the other electrode plate 2, and the two electrode plates 2 and 3 are brought into conduction through the lever 6, and the lever 6 is raised. And the lever 6 is separated from the space between the resilient contact pieces 7 so that the two electrode plates 2 and 3 are in a non-conductive state.

[0003]

However, in the above configuration, the lever is simply press-fitted between the elastic contact pieces in the conductive state, and is only upright in the non-conductive state. As a result, the lever may be inadvertently lifted or fall down. In this,
The state is not maintained after switching the breaker device,
A reliable switch operation in the breaker device cannot be realized. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a breaker device that can increase the reliability of a switch operation.

[0004]

According to a first aspect of the present invention, there is provided an electro-optical device comprising:
A pair of electrode terminals arranged in opposition, and a cylindrical shape
And only one of the two electrode terminals
From the externally fitted position to the externally fitted terminal
Slide displacement, the inner peripheral surface of both ends
The elastic contact pieces incorporated so as to be able to bend and deform in the
A connecting member in contact respectively with the electrode terminal is on and off the conduction state between the both electrodes, and the lever for rotatable operation for causing the on-off operation in this connecting member,
A return prevention mechanism that engages with the lever in the off position to prevent the lever from returning to the on position.

[0005]

[0006]

According to the first aspect of the present invention, the return prevention mechanism is released.
When the operating lever is turned, the connecting member
From the position that only fits externally to the other electrode terminal
It slides to the position where it fits externally, thereby
The conduction state between the terminals is turned on.

[0007]

As described above, according to the first aspect of the present invention, when the connection between the two electrode terminals is on, the connecting portion
The elastic contact piece provided in the material contacts both electrode terminals.
As a result, the contact situation is assured.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a breaker device according to the present invention will be described below with reference to FIGS. <Structure> The breaker device of the present invention is disposed between a battery and various electric devices in an electric vehicle, and as shown in FIG.
And an operating mechanism 13 for turning the switch mechanism 12 on and off, and a lock mechanism 14 for holding the breaker device in an on state.

The switch mechanism 12 includes a pair of electrode terminals 15 and 16 arranged coaxially in a facing state, and one of the pair of electrode terminals 15 and 16 is made of a conductive rod. A terminal rod 17 and a cylindrical connecting member 18 are fixed to the left side wall of the case 11. The distal end of the terminal rod 17 is formed slightly smaller in diameter than the base side thereof.
Is externally fitted. Thereby, the connecting member 18 can be slid in the left-right direction along the terminal rod 17. In addition,
A plurality of elastic contact pieces 19 (see FIG. 6) capable of bending and deforming in the radial direction are bulged in a ring shape on the inner peripheral surfaces of both ends of the connecting member 18. The contact with the rod 17 and the contact with the other electrode terminal 16 described later are ensured.

On the other hand, the other electrode terminal 16 is made of only a conductive rod material, and is fixed to the right side wall of the case 11 with the terminal rod 17 and the tip separated from each other by a predetermined distance. Thus, when the connecting member 18 slides rightward, the other electrode terminal 16 is provided in the right side of the connecting member 18.
Is inserted, and a conduction state is established between the electrode terminals 15 and 16. The position of the connecting member 18 is the contact position according to the present invention (the position shown in FIG. 1). When the connecting member 18 is slid leftward from this state, the connecting member 18 is separated from the other electrode terminal 16 and the two electrode terminals 15 and 16 are brought into a non-conductive state. The position of the connecting member 18 is the non-contact position according to the present invention (the position shown in FIG. 4).

A cylindrical plug 20 is coaxially protruded from each of the right and left sides of the case 11. The terminal rod 17 and the other electrode terminal 16 are connected to the case 11.
It extends outside and projects substantially at the center of the plug 20. One end of a cable connected to the battery is inserted into one of the plugs 20, and one end of a cable wired to various electric devices is inserted into the other plug 20.

The operation mechanism 13 is a mechanism for turning on and off the switch mechanism 12, that is, the electrode terminals 15, 16.
A lever 21 for manual operation for sliding the connecting member 18 between the contact position and the non-contact position, and turning the lever 21 off from an on position described later. And a spring actuator 22 for automatically pushing back to a position. Lever 2
1 and 2, as shown in FIGS. 2 and 3, has a gate shape having a grip portion 23 on the upper side, and both leg pieces 24 are formed through slit holes 25 formed on the upper surface of the case 11. Is supported by a rotating shaft 26 in the inside. As a result, the lever 21 is turned off (position shown in FIG. 4) at the left end of the slit hole 25 and turned on (FIG. 1) at the right end.
(Position shown in FIG. 2). An elongated hole 27 is formed in the lower leg portion 24 of the lever 21 so as to face the lower portion thereof, and a pair of connecting shaft portions 28 projecting from a substantially central portion of the connecting member 18 engage with the elongated hole 27. ing. When the lever 21 is turned from the off position to the on position, the connecting member 18 slides from the non-contact position to the contact position in conjunction therewith, and when the lever 21 is turned from the on position to the off position, the connecting member 18 comes into contact. It slides from a position to a non-contact position.

The spring actuator 22 is fixed to the bottom of the case 11 and includes a spring case 45 containing a spring (not shown) therein, and a pressing bar 29 protruding from the spring case 45. . The pressing bar 29 is pushed rightward in FIG. 1 by an elastic force from a spring housed in a spring case 45, and its tip is connected to the leg 24 of the lever 21. That is, the lever 21 is always urged in the counterclockwise direction in FIG. 1 by the spring actuator 22. Therefore, in the natural state, the lever 21 is biased to the off position, and the electrode terminals 15 and 16 are brought into a non-conductive state.

Two limit switches 30 and 31 are provided at predetermined positions on the inner bottom of the case 11, and are pressed by the leg pieces 24 when the lever 21 is turned to the off position and the on position. It has become so. The limit switches 30 and 31 are connected to a control device (not shown), and can detect whether the breaker device is in an on state or an off state. An unillustrated impact sensor and the like are connected to the control device.

The lock mechanism 14 is a mechanism for holding the connecting member 18 at the contact position. That is, as shown in FIG. 6, an engagement protrusion 32 is formed on the right side of the lower surface of the connecting member 18, and tapered surfaces 32a and 32b are formed on both left and right sides of the engagement protrusion 32. . An engagement member 33 is provided below the other electrode terminal 16 so as to be able to engage with the connection member 18. This engagement member 33 is
Is supported by a support pin 46 attached to the wall surface. Further, a locking claw portion 34 is formed on the upper surface of the tip of the engaging member 33. This locking claw 3
4 are also formed on both left and right sides with tapered surfaces 34a and 34b. Further, a spring 35 is connected to the right end of the engagement member 33, and the locking claw 34 is lifted upward by urging the right end downward. Thereby, when the connecting member 18 is in the non-contact position, the engaging member 33 is held in a state where the left tapered surface 34a of the locking claw portion 34 contacts the right tapered surface 34b of the engaging projection 32. Connecting member 1
When 8 slides to the contact position, the locking claw 34 rides over the engaging projection 32 and the right tapered surface 34b of the locking claw 34 engages with the left tapered surface 32a of the engaging projection 32. I have.

Further, as shown in FIG.
A through-hole 33a is formed in the right end of the first through-hole in the horizontal direction. The solenoid 47 is controlled by a control device. When the limit switch 31 is turned on, the lock piece 36 projects and fits into the through hole 33a. Further, when a signal notifying the fact is output from an impact sensor or the like when a strong impact is received or the like, a release signal is output from the control device, and the lock piece 36 is pulled out from the through hole 33a. Further, an operation piece 37 protrudes from the lock piece 36, and the operation piece 37 extends outside the case 11 so that the lock piece 36 can be manually operated regardless of the operation of the solenoid 47. The hood wall 4 is provided around the operation piece 37.
8 is formed to protect the operation piece 37 from being inadvertently operated.

A return prevention mechanism 38 is provided on the upper surface of the case 11. This is a mechanism for preventing the lever 21 at the off position from returning to the on position. That is, as shown in FIG. 3, a return preventing piece 39 is disposed at the left end of the upper surface of the case 11, and the return preventing piece 39 is Is supported rotatably around the axis. One end of the return preventing piece 39 has a locking claw 39a.
Is formed, and a spring 42 is arranged between the other end and the spring holding piece 41 so as to urge the locking claw 39a clockwise in FIG. The other end extends leftward in FIG. 3, and can be pressed inward to rotate the locking claw 39 a counterclockwise against the urging force of the spring 42. It has become. Further, a spring holding piece 41 sandwiching the return preventing piece 39
A stopper 43 is provided on the opposite side to prevent the return preventing piece 39 from being urged clockwise by a spring 42 to a predetermined amount or more. On the other hand, as shown in FIG. 5, the upper portion of the leg portion 24 of the lever 21 has a left portion protruding diagonally upward, and a locking hole 44 is formed therein. When the lever 21 rotates to the off position, the locking hole 44 engages with the locking claw 39a of the return preventing piece 39 to hold the lever 21 at the off position.

<Operation> Next, the operation of the present embodiment will be described. To switch the breaker device from the off state to the on state, first, the rear end of the return preventing piece 39 is pressed inward with a finger. As a result, the locking claw 39a rotates outward about the rotation shaft 40, so that the locking claw 39a is disengaged from the locking hole 44 so that the lever 21 can be rotated in the ON position direction. Become. Then, the lever 21 is rotated in the ON position direction while gripping the lever 21. Then, the connecting member 18 slides rightward from the non-contact position in conjunction with this, and the lever 21
Reaches the ON position, the other electrode terminal 16 is inserted into the right side of the connecting member 18, and the electrode terminals 15 and 16 are brought into conduction through the connecting member 18 (see FIG. 1). Further, since the spring actuator 22 is compressed by the leg piece 24 of the lever 21 by this operation, a force is applied to the lever 21 to push the lever 21 back toward the off position in the on position.

Further, the engaging member 33 is in a state where the left tapered surface 34a of the locking claw portion 34 is in contact with the right tapered surface 32b of the engaging projection 32 when the connecting member 18 is in the non-contact position. (See FIG. 6), but when the connecting member 18 is slid from the non-contact position to the contact position by the above-described operation, the locking claw portion 34 is pushed down (see FIG. 7) so that the engagement protrusion 32 is moved. The right-side tapered surface 34b of the locking claw portion 34 goes over and the left-side tapered surface 32a of the engagement projection 32
(See FIG. 8). Also, lever 21
Is turned to the ON position, so that the limit switch 3
When the connecting member 18 slides to the contact position, the lock piece 36 protrudes and the through-hole 3 of the engaging member 33 is pushed.
3a (see FIG. 10). As a result, the connecting member 18 is locked at the contact position and the lever 21 is locked at the ON position, and the breaker device is held in the ON state.

On the other hand, in this state, when the vehicle receives a strong impact, a signal notifying the fact is output from the impact sensor or the like to the control device. As a result, a release signal is output from the control device, so that the solenoid 47 operates and the lock piece 36 is removed from the through hole 33a (see FIG. 9). Then, since a force for pushing back the lever 21 in the off position direction is acting, the connecting member 18 is pushed back from the contact position to the non-contact position while the engaging projection 32 pushes down the locking claw 34 of the engaging member 33. It is. As a result, the locking claw 34 of the engaging member 33 rides over the engaging projection 32 from left to right, and when the connecting member 18 reaches the non-contact position, the right tapered surface 34b of the engaging claw 34 is Engaging projection 32
Is held in contact with the left tapered surface 32a.

When the lever 21 is pushed back to the off position, the locking claw 39a of the return preventing piece 39 engages with the locking hole 44 of the lever 21 (see FIG. 5). Thereby, lever 2
1 is held in the off position, the connecting member 18 is held in the non-contact position, and the breaker device is turned off (see FIG. 4). When performing maintenance work or the like, the operator may manually operate the operation piece 37 to lock or unlock the engagement member 33.

<Effect> As described above, in this embodiment, since the connecting member 18 is held in the contact position by the lock mechanism 14, the lever 21 is inadvertently turned to the off position after the breaker device is switched to the on state. The ON state of the breaker device can be reliably ensured without being turned off by turning. Moreover, the connecting member 18
Is directly held, the ON state is further ensured, and the reliability of the switch operation is improved.

Further, since the breaker device can be electrically switched from the on state to the off state by the solenoid 47, the breaker device can be automatically switched in conjunction with various sensors. For example, when the vehicle receives a strong impact, it can be detected by an impact sensor or the like and the breaker device can be automatically turned off. Further, by providing the lock piece 36 with the operation piece 37, the lock to the engagement member 33 and the release thereof can be manually performed, so that the maintenance work of each electric device can be easily performed. In this case, a switch for directly operating the solenoid 47 may be provided, and the lock may be released by operating this switch during maintenance work or the like.

It should be noted that the present invention is not limited to the above embodiments, but can be modified and implemented as follows, for example, and these embodiments also belong to the technical scope of the present invention. (1) In the above embodiment, the lock piece 36 is inserted into and removed from the through hole 33a by the solenoid 47. However, the lock piece is always urged toward the engaging member by a spring without using the solenoid. When the connecting member slides to the contact position and the through hole is displaced to a predetermined position, the lock piece may be fitted into the through hole.

(2) In the above embodiment, the lock mechanism 14
Although the connecting member 18 is locked at the contact position by the above, the connecting member 18 may be locked at the non-contact position or both the contact position and the non-contact position.

(3) In the above embodiment, one of the electrode terminals 15 is composed of a terminal rod 17 and a connecting member 18, and
The connecting member 18 slid to the contact position is
However, the electrode terminal itself may be configured to be slidable and the electrode terminal may be directly locked. In addition, the present invention can be implemented with various modifications without departing from the scope.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing the entire (on state) of the present embodiment.

FIG. 2 is a side view of the embodiment.

FIG. 3 is a top view of the embodiment.

FIG. 4 is a sectional view showing an off state.

FIG. 5 is a sectional view showing a return prevention mechanism.

FIG. 6 is a sectional view showing the lock mechanism when the connecting member is at a non-contact position.

FIG. 7 is a cross-sectional view showing the lock mechanism when the connecting member is slid from the non-contact position to the contact position.

FIG. 8 is a sectional view showing the lock mechanism when the connecting member is at a contact position.

FIG. 9 is a top view showing the lock mechanism when the connecting member is at a non-contact position.

FIG. 10 is a cross-sectional view showing the lock mechanism when the connecting member is at a contact position.

FIG. 11 is a sectional view showing a conventional example.

[Description of Signs] 15, 16: Electrode terminal 18: Connection member (contact member) 14: Lock mechanism 33: Engagement member 36: Lock piece (lock holding means)

──────────────────────────────────────────────────続 き Continuation of the front page (56) Reference Jikken Sho 16-14674 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) H01H 31/06 H01H 21/36 H01H 31 / 32

Claims (1)

(57) [Claims] 1. Both are made of conductive rod material and are coaxially opposed.
And a pair of electrode terminals arranged in a cylindrical shape, and of the two electrode terminals
From the position externally fitted to only one to the other electrode terminal
Also slides to the position where
A bullet that is incorporated so that it can be bent and deformed in the radial direction on the peripheral surface.
A connecting member which sexual contact piece turns on and off the conduction state between each contact with the two electrodes the both electrode terminals, rotatable lever for operation for causing the on-off operation on the coupling member And a return prevention mechanism that engages with the lever at the off position to prevent the lever from returning to the on position.