JP2013089315A - Disconnecting switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disconnecting switch which suppresses displacement of a return spring.SOLUTION: The disconnecting switch comprises: a contact part 2 having a fixed contact 22 and a movable contact 21; a shaft 3 which moves the movable contact 21 to and away from the fixed contact 22; an operation lever 51 which moves the shaft 3 forward and backward between a closing position where the movable contact 21 contacts the fixed contact 22 and an opening position where the movable contact 21 leaves the fixed contact 22; a restriction part 8 which restricts movements of the operation lever 51; and a unit body 1. The restriction part 8 includes a lock button 81 which is operated to release the operation lever 51 from being restricted; a restriction body 83 provided to the lock button 81 in one body, and arranged to move forward and backward between a restriction position for restricting the movements of the operation lever 51 and a release position for removing the restriction; and a return spring 82 which applies spring force to the restriction body 83 toward the restriction position. Further, the unit body 1 is provided with ribs 15 and 15 suppressing displacement of an end of the return spring 82.

Description

  The present invention relates to a disconnector.

  Conventionally, a manual disconnector used for a circuit including a high voltage battery has been provided (see, for example, Patent Document 1). This disconnector includes a contact portion constituted by a fixed contact and a movable contact, an operation lever operated when the movable contact is brought into contact with or separated from the fixed contact, and a restriction portion for restricting movement of the operation lever. Is provided. The restricting portion is provided integrally with the lock button and the lock button that are operated when releasing the restriction of the operation lever, and moves forward and backward between a restriction position that restricts movement of the operation lever and a release position that releases the restriction. It is comprised by the restricting body arrange | positioned freely and the return spring which gives a spring force to the said restriction | limiting position side with respect to a lock button and a restricting body.

  When the control lever is in the off position (position for opening the contact portion), the movement of the control lever is restricted by the regulator, so the operation lever is moved to the on position (position for closing the contact portion). I can't. When the restricting body is moved to the release position by operating the lock button from this state, the restriction of the operation lever by the restriction body is released, so that the operation lever can be moved to the on position. When the operating lever at the on position is moved to the off position, the restricting body returns to the restricting position by the spring force of the return spring, and the movement of the operating lever is again restricted by the restricting body.

JP 2011-134698 A

  By the way, in the disconnector shown in the above-mentioned Patent Document 1, since the mechanism for holding the return spring is not provided, the position of the return spring is shifted by the spring force of the return spring while the lock button is operated, and the return spring is returned. There was a possibility that the spring force of the spring could not be applied to the lock button and the lock button could not return to its original position.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a disconnector that suppresses the displacement of the return spring.

  The disconnector of the present invention includes a contact portion having a fixed contact and a movable contact that comes in contact with and away from the fixed contact, a shaft that moves the movable contact forward and backward with respect to the fixed contact, and the movable contact in contact with the fixed contact. The control lever that moves the shaft in a freely reciprocating manner between the closed position where the movable contact is released from the fixed contact, the restricting portion that restricts the movement of the control lever, and at least the contact portion and the shaft are housed And a container to be provided. The restricting portion includes a restricting body that is disposed so as to be able to advance and retreat in accordance with a lock operation between a restricting position that restricts the movement of the operating lever and a release position that releases the restricting of the operating lever. And a return spring for applying a spring force to the. The container body is provided with a misalignment suppressing portion that suppresses misalignment of the end of the return spring opposite to the restricting body.

  In this disconnector, it is preferable that the misregistration suppressing portion is composed of a rib that restricts the end of the return spring from moving toward the regulating body.

  Moreover, in this disconnector, it is preferable that the misalignment suppressing portion is composed of a rib provided in a direction in which the end of the return spring is displaced by the spring force of the return spring.

  Furthermore, in this disconnector, it is preferable that the misregistration suppressing portion is formed of a recess provided in a portion where the end of the return spring contacts.

  Moreover, in this disconnector, it is also preferable that the misregistration suppressing portion includes an attachment portion that is integrally provided at the end of the return spring and attached to the vessel body.

  Furthermore, in this disconnector, it is preferable that a plurality of members are assembled to the container body, and the positional deviation suppressing portion is attached to the container body by sandwiching the attachment portion between the members.

  Moreover, in this disconnector, it is preferable that the misregistration suppressing portion is formed of a rib inserted into the center hole of the return spring wound in a coil shape.

  There exists an effect that the disconnector which suppressed the position shift of the return spring can be provided.

The disconnector of this embodiment is shown, (a) is an internal block diagram of the state which the contact part welded, (b) is the principal part detail drawing. (A), (b) is a sectional side view which shows the other example of the principal part same as the above. It is an internal block diagram of the state which opened the contact part same as the above. It is an internal block diagram of the state which closed the contact part same as the above. It is an external appearance perspective view same as the above.

  Below, embodiment of a disconnector is described based on FIGS. This disconnector is a manual disconnector that can open and close the contact portion housed inside the container by operating an operation lever provided on the front side of the container, and includes, for example, a high-voltage battery. Used in circuit etc.

  The disconnector of the present embodiment includes a contact portion 2, a shaft 3, a metal bellows 4, an opening / closing mechanism portion 5, a restricting portion 8, and a synthetic resin container 1 for housing them. Prepare as a configuration.

  As shown in FIG. 5, the container body 1 is composed of thin rectangular box-shaped container pieces 11 and 12 that are open on one side, and the two container pieces 11 and 12 are assembled with the opening sides facing each other. The body 1 is assembled. Further, a moving window portion 13 in which an operation lever 51 of the opening / closing mechanism portion 5 is movably disposed is provided on the front surface (the upper surface in FIG. 5) of the container body 1, and further to the moving window portion 13. A display window 14 is provided. The display window portion 14 is for displaying the state of the contact portion 2 in conjunction with the operation of the operation lever 51. The display content displayed on the display window portion 14 (for example, “OFF” in the open state) In the closed state, it is possible to grasp whether the contact portion 2 is in the open state or the closed state by “ON” or the like. Moreover, the screw by which the attachment screw (not shown) for attaching a disconnecting switch to a to-be-attached part (not shown) is penetrated by the both-side wall in the width direction (left-right direction in FIG. 3) of the container piece 11 is inserted. Attachment pieces 11a each having an insertion hole 11b are provided. Here, in this embodiment, a plurality of members are constituted by the body pieces 11 and 12.

  As shown in FIG. 1 (a), FIG. 3 and FIG. 4, the contact portion 2 includes fixed contacts 22 and 22 provided at the respective tip ends of a set of two fixed terminals TB1 and TB1, and both fixed contacts. The movable contact 21 is configured to come into contact with and separate from the contact points 22 and 22 to electrically connect the fixed contacts 22 and 22, and is housed in the sealed container 6 in a state of ensuring airtightness. In the present embodiment, copper contacts are used as the fixed contacts 22 and 22 and the movable contact 21, but other metal contacts may be used. Further, the fixed terminals TB1 and TB1 may be formed of copper or other metal materials.

  As shown in FIG. 1A, FIG. 3 and FIG. 4, the shaft 3 is composed of a rod 31 whose longitudinal direction is the longitudinal direction, and the tip side of the rod 31 (the lower end side in FIG. 1A). The movable contact 21 is attached to the movably up and down direction. A support shaft 32 that rotatably supports an arm 52 described later is integrally provided on the rear end side of the rod body 31 (upper end side in FIG. 1A). The shaft 3 has a closed position (position shown in FIG. 4) where the movable contact 21 contacts the fixed contacts 22 and 22 and an open position (shown in FIG. 3) where the movable contact 21 separates from the fixed contacts 22 and 22. Position). In the present embodiment, a coiled contact pressure spring 7 is provided to urge the movable contact 21 attached to the distal end side of the rod 31 toward the fixed contacts 22, 22, and the movable contact 21 is fixed to the fixed contact 22. , 22, the contact points 21 and 22 are held in a tight contact state by the spring force of the contact pressure spring 7.

  The metal bellows 4 has a bellows shape as shown in FIGS. 1A, 3, and 4, and has a function of ensuring the airtightness of the sealed container 6. The metal bellows 4 is fixed at one end in the vertical direction (the lower end in FIG. 1A) around the portion of the sealed container 6 from which the shaft 3 projects, and the projecting portion of the shaft 3 (from the sealed container 6 to the outside). The other end side (the upper end side in FIG. 1 (a)) is fixed to the peripheral portion of the portion exposed to (1). Therefore, the airtightness of the sealed container 6 can be ensured despite the shaft 3 being movable with respect to the sealed container 6. That is, the metal bellows 4 can be expanded and contracted in the vertical direction according to the movement of the shaft 3.

  As shown in FIG. 1A, FIG. 3 and FIG. 4, the opening / closing mechanism unit 5 is provided with an operation lever 51 arranged so that the operation part protrudes from the body 1 to the outside, and the operation lever 51 is operated. It is comprised by the arm 52 and the wheel 53 which move the shaft 3 between the said opening position and the said closing position by rotating according to it. The operation lever 51 is rotated around the base yoke 9 incorporated in the container body 1 through a support shaft 54 that passes through the operation lever 51 in the thickness direction (direction perpendicular to the paper surface in FIG. 1A). The wheel 53 is also attached to the base yoke 9 via the support shaft 55 so as to be rotatable. The operation lever 51 is between an ON position (position shown in FIG. 4) where the shaft 3 is moved to the closed position and an OFF position (position shown in FIG. 3) where the shaft 3 is moved to the open position. It is free to rotate.

  As shown in FIG. 1A, the arm 52 is rotatably connected to the shaft 3 by a support shaft 32, and the arm 52 has a rotation groove 52 a in which a wheel 53 is movably disposed, and a support shaft 54. And a moving groove 52b that is movably disposed. Further, the rotating groove 52a is provided with an engaging convex portion 52c that engages with the wheel 53 in a state where the shaft 3 is in the closed position. In the state where the shaft 3 is in the closed position, the state (the state shown in FIG. 4) is maintained without the arm 52 rotating due to the wheel 53 engaging the engagement convex portion 52c.

  In the present embodiment, a positioning spring 10 is provided that restricts the operation lever 51 in the on position from moving to the off position. The positioning spring 10 has a coiled spring body 10a, and a pair of arm portions 10b extending in different directions are integrally provided at both ends of the spring body 10a. On the other hand, the operation lever 51 is provided with a cylindrical spring mounting portion 51a protruding in the penetrating direction on one outer surface in the penetrating direction of the support shaft 54 (direction perpendicular to the paper surface in FIG. 1A). It has been. Then, the spring mounting portion 51a is inserted into the center hole of the spring body 10a, and one arm portion 10b is locked to the side wall of a recess (not shown) provided in the operation lever 51 and the other arm portion 10b is fixed. By attaching to the arm 52, the positioning spring 10 is assembled to the operation lever 51 and the arm 52.

  As shown in FIGS. 1A, 3, and 4, the restricting portion 8 is provided integrally with the lock button 81 and a lock button 81 that is operated when releasing the restriction of the operation lever 51. A restricting body 83 that is disposed between a restricting position (position shown in FIG. 3) for restricting movement of the operation lever 51 and a releasing position (position shown in FIG. 4) for releasing the restriction, a lock button 81, and A return spring 82 that applies a spring force to the restricting body 83 on the restricting position side (the upper side in FIG. 3) is configured.

  When the end of the return spring 82 opposite to the lock button 81 (the lower end in FIG. 3) is not fixed to the container 1, the return spring 82 is restored by the spring force while the lock button 81 is operated. There is a possibility that the position of the spring 82 is shifted, and the spring force of the return spring 82 is not applied to the lock button 81, so that the lock button 81 cannot be returned to the original position (position shown in FIG. 3). Therefore, in the present embodiment, the following means are taken in order to prevent the displacement of the end portion of the return spring 82.

  FIG. 1B shows an example of this, and the side wall (return spring 82 side) is provided on the rib 19 and the side wall of the body piece 11 erected from the contact surface 18 with which the end of the return spring 82 contacts. The ribs 15 projecting toward are provided respectively. Then, by engaging the end portion side of the return spring 82 with both the ribs 15, 15, the end portion of the return spring 82 is moved to the lock button 81 side (in FIG. 1B) as the lock button 81 is operated. To the upper side). Here, in this example, the ribs 15 and 15 constitute a misregistration suppressing portion.

  Moreover, Fig.2 (a) is a sectional side view which shows the other example of a position shift suppression part. In this example, the rib 16 is erected from the contact surface 18 with which the end of the return spring 82 (the lower end in FIG. 2A) abuts. The above-mentioned end portion 82 is restrained from moving to the side (left side in FIG. 2A). In other words, in this example, the rib 16 constitutes a misregistration suppressing portion.

  Further, FIG. 2B is a side sectional view showing still another example of the misregistration suppressing portion. In this example, it extends from the above-described end portion of the return spring 82 (the lower end portion in FIG. 2B). The plate-shaped mounting portion 17 constitutes a misregistration suppressing portion. Then, the return spring 82 is attached to the body 1 by sandwiching the bent portion 17a provided at the tip of the attachment portion 17 between the two body pieces 11 and 12, and as a result, the end portion of the return spring 82 is Misalignment is suppressed.

  Next, the operation of the disconnector will be described with reference to FIGS. 1 (a), 3 and 4. FIG. FIG. 3 shows a state where the contact portion 2 is opened (a state where the movable contact 21 is separated from the fixed contacts 22, 22). At this time, the wheel 53 is positioned at the right end of the rotating groove portion 52 a of the arm 52. First, the restricting body 83 is moved to the release position by pressing the lock button 81 of the restricting portion 8 downward. When the operation lever 51 is rotated clockwise in this state and moved to the ON position (position shown in FIG. 4), the arm 52 rotates clockwise about the support shaft 32, and at this time, the wheel 53 moves to the arm 52. It moves to the left end while rotating in the rotation groove 52a.

  At this time, the shaft 52 is pushed downward by rotating the arm 52 clockwise. As a result, the contact portion 2 is in a closed state shown in FIG. 4 (the movable contact 21 is in contact with the fixed contacts 22 and 22). )become. At this time, the movable contact 21 is held in a state of being in close contact with the fixed contacts 22, 22 by the spring force of the contact pressure spring 7. Further, at this time, since the wheel 53 is engaged with the engaging convex portion 52c of the rotating groove 52a, the arm 52 is maintained in this state without rotating in the opening direction. At this time, since the clockwise spring force is applied to the operation lever 51 by the positioning spring 10, the operation lever 51 is held in the ON position. Further, in this state, the upward movement of the restricting body 83 is restricted by the arm 52, so that the lock button 81 provided integrally with the restricting body 83 is held in a state where it is pushed into the body 1 (see FIG. 4).

  When the operating lever 51 is rotated counterclockwise from the closed state shown in FIG. 4 and moved to the off position (position shown in FIG. 3), the arm 52 rotates counterclockwise around the support shaft 32, At this time, the wheel 53 moves to the right end while rotating in the rotation groove 52 a of the arm 52. At this time, the arm 52 rotates counterclockwise, whereby the shaft 3 is pulled upward, and as a result, the contact portion 2 is in the open state shown in FIG. At this time, the arm 52 is maintained in this state without rotating in the closing direction by the internal pressure of the sealed container 6 and the spring force of the metal bellows 4. Further, at this time, since the restriction of the restriction body 83 by the arm 52 is released, the lock button 81 and the restriction body 83 are returned to the restriction position by the spring force of the return spring 82. At this time, a clockwise spring force is applied to the operation lever 51 by the positioning spring 10, and the operation lever 51 tries to rotate clockwise, but the internal pressure of the sealed container 6 and the spring force of the metal bellows 4 reduce the force. The movement of the operation lever 51 is restricted by abutting the arm 52 holding the position, and the operation lever 51 is held in the off position.

  Further, FIG. 1A shows a state in which the contact portion 2 is welded due to, for example, an overcurrent. At this time, the operation lever 51 and the arm 52 try to rotate counterclockwise by the overcurrent protection function. However, since the contact portion 2 is welded, the wheel 53 comes into contact with the side wall of the rotation groove portion 52a of the arm 52 so that the rotation operation of the arm 52 is halfway (the position where the contact portion 2 is closed and the contact portion 2). (Position between positions where the contact is opened). At this time, the operation lever 51 also attempts to rotate to the off position, but can only move to the position shown in FIG. 1A by the spring force of the positioning spring 10 attached to the operation lever 51. At this time, since the positioning spring 10 is in a neutral state, the operation lever 52 is held at the position shown in FIG. Further, at this time, the movement of the restricting body 83 is restricted by the arm 52, so that the lock button 81 provided integrally with the restricting body 83 is pushed into the container 1 (the state shown in FIG. 1A). ).

  Thus, according to the present embodiment, the rib 15 or the rib 16 suppresses the displacement of the return spring 82, or the mounting portion 17 provided integrally with the end of the return spring 82 is provided between the body pieces 11 and 12. By restraining the return spring 82 from being displaced, the spring force of the return spring 82 can be applied to the restriction body 83, and the restriction body 83 can be returned to the restriction position.

  In addition, although illustration is abbreviate | omitted, the recessed part in which the said edge part of the return spring 82 is accommodated may be provided in the container 1 as a position shift suppression part, and also in this case, the spring force of the return spring 82 is regulated. The restricting body 83 can be returned to the restricting position. Similarly, although not shown in the figure, a rib inserted into the center hole of the return spring 82 wound in a coil shape may be provided on the container body 1 as a positional deviation restricting portion. The spring force of the spring 82 can be applied to the restricting body 83, and the restricting body 83 can be returned to the restricting position. Furthermore, in this embodiment, although the container 1 is comprised by the two container pieces 11 and 12, for example, a container may be comprised by combining three or more members, and it is not limited to this embodiment. .

DESCRIPTION OF SYMBOLS 1 Container 2 Contact part 3 Shaft 8 Restriction part 15 Rib (position shift suppression part)
21 movable contact 22 fixed contact 51 operation lever 81 lock button 82 return spring 83 restricting body

Claims (7)

A contact portion having a fixed contact and a movable contact that comes in contact with and separates from the fixed contact;
A shaft for moving the movable contact forward and backward with respect to the fixed contact;
An operating lever that moves the shaft to freely move between a closed position where the movable contact contacts the fixed contact and an open position where the movable contact opens from the fixed contact;
A restricting portion for restricting movement of the operation lever;
Comprising at least the contact portion and the container in which the shaft is accommodated,
The restricting portion is disposed between a restricting position for restricting movement of the operating lever and a releasing position for releasing the restricting of the operating lever. And a return spring that applies a spring force to the restriction position side,
The disconnector characterized in that the container body is provided with a position shift suppressing portion for suppressing a position shift of the end portion of the return spring opposite to the regulating body.   2. The disconnector according to claim 1, wherein the position shift suppressing portion includes a rib that restricts movement of the end portion of the return spring toward the restricting body.   2. The disconnector according to claim 1, wherein the position shift suppressing portion includes a rib provided in a direction in which the end portion of the return spring is shifted by a spring force of the return spring.   2. The disconnector according to claim 1, wherein the misregistration suppressing portion includes a concave portion provided at a portion where the end portion of the return spring contacts.   2. The disconnector according to claim 1, wherein the misregistration suppressing portion includes an attachment portion that is integrally provided at the end portion of the return spring and is attached to the vessel body. The container is composed of a plurality of members assembled.
The disconnector according to claim 5, wherein the misalignment suppressing portion is attached to the container body by sandwiching the attachment portion between the members.   The disconnector according to claim 1, wherein the misregistration suppressing portion is a rib inserted into a center hole of the return spring wound in a coil shape.

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