JP3444388B2 - 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 which is used, for example, as a power line of an electric vehicle.

[0002]

2. Description of the Related Art For example, a power cable of an electric vehicle is provided with a breaker capable of dividing the power cable for maintenance or the like and a fuse for preventing an excessive current flow. Is desirable. Therefore, conventionally,
A knife switch type breaker and a holder containing a fuse are connected in series and provided on a power line.

[0003]

However, since a large amount of current flows through the power line of an electric vehicle, both the knife switch type breaker and the fuse holder have to be large in size, requiring a large installation space. There was a problem. The breaker device of the present invention has been completed under the circumstances described above, and its purpose is to make the device compact.

[0004]

As a means for achieving the above object, the invention of claim 1 is such that a pair of fixed electrodes are provided upright on one side in the casing, and the front end sides of both fixed electrodes are provided. A breaker switch is configured by providing a movable electrode that is inserted into and removed from both fixed electrodes to cut or connect between the fixed electrodes, and a handle for insertion / removal operation is provided on the movable electrode in an upright position and a tilted position. It is possible to switch between the two positions by swinging between them, and a fuse connected in series with the breaker switch is housed in the remaining space of the casing .
And the handle is a toggle mechanism using a spring member.
It is possible to hold both the upright position and the tilted position via the
It has a feature in that it is configured as described above.

The invention of claim 2 is characterized in that, in the invention of claim 1, the handle is configured to be tiltable toward the remaining space side of the casing .

[0006]

<Operation and effect of the invention><Invention of claim 1> When the movable electrode is inserted into both fixed electrodes, the breaker switch is turned on and the conduction path is conducted through the fuse. The handle can be tilted in the conductive state. When the handle is stood up and pulled up, the movable electrode is pulled out from both fixed electrodes, the breaker switch is turned off, and the conduction path is cut off. When replacing the fuse, pull up the handle and turn off the breaker switch in the same way. Since the breaker switch and the fuse are accommodated side by side in the casing, and the handle can be tilted, the device can be particularly compact and has a short height. Tilt the handle when conducting
However, by being held in that leaning position,
Even if you receive vibrations etc. while driving, you will not dance and abnormal noise will occur
It is possible to prevent such things from occurring. Again hand
The handle can be held in the upright position by holding the handle.
If the moving electrode is inserted into or removed from the fixed electrode, the movable electrode
Since it is stable without wobbling, the work of connecting and disconnecting is smooth
It can be carried out.

<Invention of Claim 2> Since the handle is tilted toward the remaining space of the casing, the handle can be more compact without protruding laterally of the casing.

[0008]

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. <First Embodiment> FIGS. 1 to 8 show a first embodiment of the present invention. 1 to 3, reference numeral 1 is a casing made of synthetic resin, and includes a lower casing 2 and an upper casing 3.
It consists of and. The lower casing 2 is formed in a tubular shape having a bottom and a substantially rectangular shape in plan view, and a bottom surface 4 thereof is formed so as to rise to a substantially central depth portion, and a mounting flange 5 is formed on an outer peripheral surface of a lower end portion. Then, the screws are screwed into the mounting holes 6 provided at the four corners to be mounted on a vehicle body (not shown).

On the other hand, the upper casing 3 is the lower casing 2
Is formed in a lid-like shape that is attached to the upper end of the lower casing 2, and the screws 8 that pass through the insertion holes provided at the four corners of the upper surface of the lower casing 2 are screwed into the screw holes 9 (see FIG. 4), and can be detachably attached.

A pair of fixed electrodes 11a and 11b are provided upright on one side in the vertical width direction (vertical direction in FIG. 4) of the lower casing 2 and a fuse 12 is housed on the other side. It has become. In order to erect the fixed electrodes 11a and 11b, on the bottom surface 4 of the lower casing 2, as shown in FIG. 2, a pair of female screw bodies 13 are embedded at predetermined intervals by insert molding. Fixed electrode 11a,
11b is formed in a pin shape and has a hexagonal portion 1 at the center in the length direction.
5 is formed, and a male screw 16 is cut on the lower end side. That is, each fixed electrode 11a, 11b
Are erected by screwing each male screw 16 into the female screw body 13.

As shown in FIG. 5, a terminal metal fitting 18 connected to one divided portion of the electric wire a is also fastened and fixed to one fixed electrode 11a (left side in FIG. 2).
The electric wire a is drawn to the outside through the first insertion hole 19 formed in the bottom surface 4. The other fixed electrode 1
A bus bar 20 connected to one end of a fuse 12 is also fastened and fixed to 1b, as will be described later.

The fuse 12 is housed on the other side of the bottom surface 4 of the lower casing 2 as described above, and the partition wall 22 is provided so as to project from the bottom surface 4 between the fuse 12 and the fixed electrodes 11a and 11b. (See Figure 4). Connection pieces 23, 24 are provided at both ends of the fuse 12, respectively, and a terminal metal fitting 26 connected to the other divided portion of the electric wire a is fastened and fixed to one connection piece 23 by a bolt 27. ing. The electric wire a has a second insertion hole 2 opened on the bottom surface 4.
It is pulled out to the outside through 8. Both insertion holes 1
The waterproof rubber plugs 2 provided on the outer periphery of the electric wire a are shown at 9 and 28.
9 is fitted and sealed. Further, one end of the bus bar 20 is fixed to the other connecting piece 24 of the fuse 12 by tightening with a bolt 27 in an orthogonal posture,
As described above, the other end is fastened and fixed together with the fixed electrode 11b.

A movable electrode 31 can be inserted into and removed from the pair of fixed electrodes 11a and 11b. As shown in FIG. 2, the movable electrode 31 includes fixed electrodes 11a,
In this structure, the bridging portion 33 is inserted and connected between a pair of louver terminals 32a and 32b into which the tips of 11b can be fitted. The movable electrode 31 is provided on the elongated mounting body 35 made of synthetic resin in a state where the louver terminals 32a and 32b are projected from the lower surface by insert molding.

On the other hand, on the ceiling surface of the upper casing 3, the movable electrode 31 is provided directly above the fixed electrodes 11a and 11b.
A pair of insertion holes 36 into which the louver terminals 32a and 32b can be inserted respectively are opened. That is, the louver terminals 32a and 32b of the movable electrode 31 are connected to the insertion hole 3
6 through the pair of fixed electrodes 11a, 1 in the casing 1
1b, so that both fixed electrodes 11a, 1a
A breaker switch 38 for disconnecting or connecting between 1b is configured. The fuse 12 described above is
In the middle of the above, the breaker switch 38 is connected in series and provided.

On the upper surface side of the mounting body 35 of the movable electrode 31,
A handle 40 is provided for performing the operation of inserting and removing. The handle 40 is formed in a frame shape whose outer shape is an inverted trapezoid. A bearing portion 41 provided with a bearing hole 42 is projectingly provided at both ends of the upper surface of the attachment body 35 in the longitudinal direction, and the bearing portion 41 is sandwiched at an edge of the handle 40 on the attachment side. Is bifurcated and has a bearing hole 4
A pair of bearing portions 43 provided with 4 are projected. The bearing hole 44 of the bearing portion 43 on the handle 40 side is
Is elongated in the protruding direction.

The bifurcated bearing portion 4 of the handle 40
By inserting the bearing portion 41 of the corresponding mounting body 35 between the three and inserting the support shaft 45 over the bearing holes 42, 44 of both bearing portions 41, 43, the handle 40 is supported on the upper surface side of the mounting body 35. It is supported so as to freely swing around the shaft 45.

The handle 40 also includes a louver terminal 32.
The standing position (see the chain line in FIG. 3) in which the a and 32b stand on the opposite side to the protruding direction, and the louver terminal 32a,
Each of them can be held at a tilted position (see the solid line in the figure) which takes a lying posture so as to be orthogonal to the protruding direction of 32b. Therefore, a spring member 47 as shown in FIG. 6 is mounted between the mounting body 35 and the handle 40.

On the upper surface of the center of the mounting body 35 in the longitudinal direction,
As shown in FIGS. 6 to 8, a ridge 48 is formed, and an attachment protrusion 49 in the form of a rectangular prism having a slender planar rectangular shape is provided upright on the top surface of the ridge 48 in a direction perpendicular to the length direction of the attachment body 35. Has been done. Hook portions 50 are provided at both ends of the upper end of the attachment protrusion 49 in the length direction.

The spring member 47 is formed by press-forming a spring steel plate, and has a shape in which folded-back portions 53 folded back inward are symmetrically provided at both ends of a strip-shaped substrate 52. ing. A rectangular fitting hole 54 into which the above-mentioned mounting projection 49 is fitted is opened in the center of the substrate 52, and locking pieces 55 are formed by cutting and raising from both ends in the length direction. That is, in the spring member 47, in the posture in which the substrate 52 is orthogonal to the mounting body 35, the fitting hole 54 is fitted into the mounting protrusion 49, and the substrate 52 is pressed against the raised portion 48 as shown in FIG.
The tips of both the locking pieces 55 are locked to the hooks 50 of the mounting protrusions 49, so that the locking pieces 55 are mounted in a retaining state and a rotation-preventing state.

On the other hand, in the center of the outer surface of the end of the handle 40 on the mounting side, a housing recess 57 is formed which can house the spring member 47 mounted on the mounting body 35.
The inner surface of the accommodation recess 57 is a contact surface 58 with which the folded-back portion 53 of the spring member 47 abuts. Spring member 47
More specifically, the two folded-back portions 53 of the straight-line portion 53 are oriented in a substantially vertical direction from the end portion of the substrate 52 via a slight arc-shaped portion.
a rises to a predetermined size, and then an arc-shaped portion 53c is formed to a position slightly inward from the tip of the locking piece 55, and a straight portion 53b is formed at the tip of the arc-shaped portion 53c. The tip is bent downward at a right angle.

That is, the handle 40 has its abutment surface 58.
The folded-back portion 53 of the spring member 47 is abutted against and elastically contracted and swung around the support shaft 45, and the handle 40 receives the restoring elastic force of the folded-back portion 53 and is urged to move outward. The one end of the bearing hole 44 in the shape of an elongated hole is locked by the support shaft 45 to restrict the movement. Here, the spring member 4
Looking at the distance from the support shaft 45 with respect to the folded-back portion 53 of No. 7, the arc-shaped portion 53c between them is longer than the linear portions 53a and 53b on the base end and tip ends. Therefore, when the contact surface 58 is swung while contacting along the folded-back portion 53, the bending amount of the folded-back portion 53 is larger and the repulsive force is correspondingly larger when the contact surface 58 corresponds to the arc-shaped portion 53c. Further, the arcuate portion 53c has a smaller contact area with the contact surface 58. Therefore, in the handle 40, the contact surface 58 has the arc-shaped portion 5
When it corresponds to 3c, it tries to escape to the side of the linear portion 53a or 53b having a small repulsive force while sliding on the arc-shaped portion 53c.

When the contact surface 58 corresponds to the straight line portion 53a or 53b, the repulsive force is relatively small so that the contact surface 58 does not escape to the arc-shaped portion 53c side, and the contact surface 58 is spread over a wide range. Since it hits, the handle 40 is stably held. That is, in response to a kind of toggle action, the handle 40 lays down so as to be orthogonal to the standing position in which the handle 40 rises to the opposite side to the protruding direction of the louver terminals 32a and 32b and the protruding direction of the louver terminals 32a and 32b. Each of them is stably held in the tilted position where the posture is taken.

As shown in FIGS. 1 and 3, a pedestal 60 is provided on a portion of the ceiling surface of the upper casing 3 corresponding to the accommodating portion of the fuse 12, and the L-shaped pedestal is provided on the pedestal 60. When the tool 61 is attached and the movable electrode 31 is properly inserted into the fixed electrodes 11a and 11b, and the handle 40 is tilted to the above-described tilted position, the center portions of both side edges of the handle 40 are fitted. I am supposed to receive it.

Further, magnets 63 are fitted in symmetrical positions on the outer surfaces of both side edges of the handle 40. On the other hand, a reed switch 65 is attached to the ceiling surface of the upper casing 3, and in the reed switch 65, the movable electrode 31 is properly inserted into the fixed electrodes 11a and 11b as described above, and the handle 40 is in the tilted position. If you are defeated by
It is provided so as to correspond to the position immediately before one of the magnets 63, and a detection signal can be sent out when the magnet 63 comes immediately before. The reed switch 65 is connected to a control computer (not shown) via a connector 67 attached to the side surface of the upper casing 3 by a bracket 66.

The present embodiment has the structure as described above,
Next, the operation will be described. In the casing 1, a pair of fixed electrodes 11a and 11b are erected and a fuse 12 is housed, and the divided portions of the electric wire a are connected in the above-described manner. To bring the electric wire a into a conductive state, the handle 40 is raised to the standing position outside the casing 1.
Then, as shown in FIG. 7, the abutment surface 58 of the handle 40 is abutted across the linear portions 53b on the tip ends of the two folded-back portions 53 of the spring member 47, and the handle 40 is erected by the aforementioned toggle action. Holds stable in position.

Next, holding the handle 40, the mounting body 35
Louver terminals 32a, 32 of the movable electrode 31 protruding from the
Although b is inserted into the insertion hole 36 of the upper casing 3, since the handle 40 is held relatively firmly by the mounting body 35 at this time, the mounting body 35, that is, the movable electrode 31 does not wobble, and both louver terminals 32a are formed. , 32b for insertion hole 3
Work to insert into 6 can be done smoothly.

Both louver terminals 32a, 32 of the movable electrode 31
When b is fitted to the corresponding fixed electrodes 11a and 11b,
The breaker switch 38 is turned on, and the electric wire a is conducted through the fuse 12 to be in use. In this usage state,
The handle 40 that was standing upright is tilted to the pedestal 60 side. The handle 40 is pushed down while the contact surface 58 contacts the arcuate portion 53c of the one folded portion 53 of the spring member 47, with a relatively large resistance, and the contact surface 58 corresponds to the straight portion 53a. The user feels that the operation is light, and at this time, while being received by the receiver 61 of the pedestal 60, the tilted position as shown by the solid line in FIG. 3 is reached.

In this tilted position, as shown in FIG. 8, the contact surface 58 of the handle 40 is brought into contact with the linear portion 53a on the base end side of the one folded portion 53 of the spring member 47, and the toggle described above is also used. By the action, it is stably held in the tilted position. Therefore, the steering wheel 40 does not dance even when subjected to vibration or the like when the vehicle is running, and abnormal noise is prevented from occurring.

When the movable electrode 31 is properly inserted into the fixed electrodes 11a and 11b as described above, the handle 4
When the 0 is tilted to the tilted position, one of the magnets 63 provided on the handle 40 corresponds to the position immediately before the reed switch 65. Therefore, the reed switch 65 sends a detection signal and the breaker switch 38 is properly turned on. Is detected. On the other hand, if the insertion amount of the movable electrode 31 is insufficient, even if the handle 40 is tilted to the tilted position, the magnet 63 does not correspond to the position immediately before the reed switch 65 and a detection signal cannot be obtained. It is determined to be defective.

When the breaker switch 38 is turned off for maintenance or the like, the handle 40 is raised from the position shown by the solid line in FIG. The handle 40 is raised while feeling a relatively large resistance on the way, and when the operation becomes light, the handle 40 reaches the standing position as shown by the chain line in FIG. Then, when the handle 40 is pulled up and pulled up, the movable electrode 31 is pulled out from the fixed electrodes 11a and 11b, the breaker switch 38 is turned off, and the electric wire a becomes non-conductive.

When the fuse 12 is blown, the breaker switch 38 is turned off by pulling out the movable electrode 31 in the same manner as described above, and then the screw 8 is loosened to remove the upper casing 3. Then, since the fuse 12 is exposed, it is sufficient to loosen the bolt 27 and remove the fuse 12 and replace it with a new one. Since the breaker switch 38 has already been turned off here, the replacement work can be performed safely.

As described above, in the breaker device of this embodiment, the breaker switch 38 and the fuse 12 are accommodated side by side in the casing 1, and the handle 4 for operation is used.
Since 0 can be tilted, it is compact and has a short height. When the handle 40 is tilted along the upper surface of the upper casing 3 as in the above-described embodiment, the handle 40 is prevented from protruding laterally and is not accidentally caught by the handle 40.

As described above, the handle 40 is tilted to the tilted position in the use state, but since it is stably held by the toggle action, it does not dance even if it receives vibrations or the like while the vehicle is running, and an abnormal noise is generated. It does not occur. Further, turning on and off of the breaker switch 38 is performed by raising the handle 40, but since the handle 40 is stably held with respect to the mounting body 35 even in the standing position, the movable electrode 31 is held by the handle 40 while holding the movable electrode 31. , 11b, the movable electrode 31 is stabilized without wobbling, so that the insertion / removal work can be performed smoothly and efficiently.

<Second Embodiment> FIG. 9 shows a second embodiment of the present invention. In the second embodiment, the structure of the portion where the spring member 47a is attached to the attachment protrusion 49a provided on the attachment body 35 is improved. On the spring member 47a side, a pair of locking pieces 55a is formed by cutting and raising from both edges on the long side of the fitting hole 54 opened in the substrate 52. That is, the locking piece 55a is formed by the folded portion 5
3 is provided in a direction orthogonal to the direction of flexural deformation. On the other hand, on the mounting projection 49a side, corresponding to the above, hooking portions 50a for locking are provided at the upper ends of the long side surfaces, respectively. Other structures are the same as those in the first embodiment,
The same portions will be denoted by the same reference numerals and redundant description will be omitted.

The spring member 47a attaches the substrate 52 to the mounting member 35.
In a posture orthogonal to the above, the fitting hole 54 is fitted into the mounting projection 49a, and as shown by the chain line in FIG.
2 is pressed against the raised portion 48 and both locking pieces 5
The tip of 5a is locked to the hook portion 50a provided on the long side surface of the mounting protrusion 49a, so that the mounting projection 49a is mounted in a retaining state and a rotation-preventing state. Since both locking pieces 55a are locked in the direction orthogonal to the bending deformation direction of the folded-back portion 53, even when the folded-back portion 53 is bent and deformed, the stress is small and the strength is excellent.

<Other Embodiments> The present invention is not limited to the embodiments described above and the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition to the above, various modifications can be made without departing from the scope of the invention.

(1) The handle 40 can be tilted in the direction opposite to that of the above embodiment when it is more convenient because of space or the like, and in that case as well, the handle 40 is stably held without dancing. It (2) Since the magnets 63 are provided at symmetrical positions on both side edges of the handle 40, the detection signal from the reed switch 65 is similarly obtained even when the handle 40, that is, the movable electrode 31 is inserted in a horizontally inverted posture. It is possible.

[Brief description of drawings]

FIG. 1 is a plan view of a state in which a handle according to a first embodiment of the present invention is tilted.

FIG. 2 is a sectional view of a state in which a handle is stood up.

FIG. 3 is a side view for explaining a handle inserting / removing operation.

FIG. 4 is a plan view showing an internal structure of a casing.

FIG. 5 is a perspective view showing the internal structure of the casing and the structure on the side of the attachment body.

FIG. 6 is a perspective view showing a structure of a mounting portion of a spring member.

FIG. 7 is an enlarged cross-sectional view of the handle in a standing posture.

FIG. 8 is an enlarged cross-sectional view of the handle in a tilted posture.

FIG. 9 is a perspective view showing a structure of a mounting portion of a spring member according to a second embodiment of the present invention.

[Explanation of symbols]

a ... electric wire 1 ... Casing 2 ... Lower casing 3 ... Upper casing 11a, 11b ... Fixed electrodes 12 ... Fuse 31 ... Movable electrode 32a, 32b ... Louver terminals 35 ... Mounting body 36 ... insertion hole 38 ... Breaker switch 40 ... Handle 47 ... Spring member 47a ... Spring member

─────────────────────────────────────────────────── --- Continuation of the front page (56) Reference JP-A-7-169357 (JP, A) JP-A-47-31173 (JP, A) JP-A-8-138501 (JP, A) JP-A-8- 185753 (JP, A) JP 9-92087 (JP, A) JP 9-171737 (JP, A) Actually opened 54-165758 (JP, U) Actually opened 62-76447 (JP, U) Actually open 59-169508 (JP, U) Actually open 1-70282 (JP, U) Actually open 49-13862 (JP, U) Actually public 54-22940 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01H 31/32 H01H 31/12 H01H 31/24

Claims (2)

(57) [Claims] 1. A pair of fixed electrodes are provided upright on one side in the casing, and a movable electrode which is inserted into and removed from the fixed electrodes and cuts or connects between the fixed electrodes is provided at the tip ends of the fixed electrodes. The breaker switch is configured by being provided, and the movable electrode has a handle for inserting / removing operation that can be swung between an upright position and a tilted position, so that both positions can be switched. A fuse connected in series with the breaker switch is housed in the remaining space of the casing , and
Via the toggle mechanism using a spring member,
The breaker device is characterized in that it can be held in each of the tilted positions . 2. The breaker device according to claim 1, wherein the handle is tiltable toward the remaining space side of the casing.