JP4539919B2 - Toggle switch - Google Patents

Description

  The present invention relates to a toggle switch for tilting an operation shaft to open and close an electric circuit, and when the operation shaft is tilted, the convex piece of the movable contact piece slides on a substantially waveform tilt base provided on the bottom surface of the case. Since the movable contact piece is brought into contact with the common contact and the fixed contact arranged on the center and both side surfaces, the distance between the common contact and the fixed contact is widened to easily cut an arc generated when a large current is disconnected. It relates to a toggle switch that can be used.

As shown in FIG. 5, in the conventional toggle switch, the sliding rod 104 having the coil spring 103 disposed on the upper surface of the movable contact piece 102 is pressed by the elastic force of the coil spring 103 by tilting the operation shaft 101, By sliding on the piece 102, the movable contact piece 102 is tilted to the left and right with the concave portion 107 of the rising piece 106 at the upper part of the common terminal 105 positioned at the center as a fulcrum, and provided at both ends of the lower surface of the movable contact piece 102. In general, a seesaw type toggle switch in which an electric circuit is opened and closed by contact with a fixed contact 108 disposed opposite to the movable contact 102a.
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However, the conventional seesaw type toggle switch has a gap between the contact between the movable contact 102a provided at both ends of the lower surface of the movable contact piece 102 and the fixed contact 107 disposed on the bottom surface of the case so as to correspond to the tilted position of the movable contact 102a. Since the distance is short, arcs generated when switching from the on state to the off state are difficult to break, contact welding is likely to occur, and foreign matters are likely to adhere to the fixed contact 108.
Therefore, the toggle switch of the present invention aims to provide a toggle switch that can solve the above-mentioned problems.

  In order to achieve the above object, the present invention has a case in which a support shaft having a rising piece is arranged so as to face each other, a hook piece in the upper part and pivotally supported by the rising piece, and a converter is arranged in the lower part. A rotating plate installed and rotatable, a movable contact piece having a projecting piece disposed below the converter via a taper spring, and a bushing that pivotally supports an operation shaft are disposed on the upper surface of the case together with a case cover. In the toggle switch, the bottom surface of the converter and the movable contact piece are formed in an R shape, and the convex piece of the movable contact piece slides on the substantially corrugated slope provided on the bottom surface in the case by tilting the operation shaft. The movable contact piece, the common contact, and the fixed contact slide immediately after the movable contact piece comes into contact with the common contact and the fixed contact disposed at the center and both side surfaces of the case.

(1) A case with a support shaft having a rising piece disposed so as to oppose, a hook piece at the upper part, pivotally supported by the rising piece, and a converter disposed at the lower part to be rotatable. A rotary plate, a movable contact piece having a convex piece disposed below the converter via a taper spring, and a toggle switch disposed on the upper surface of the case together with a case cover with a bushing that pivotally supports an operation shaft; The bottom surface of the converter and the movable contact piece are formed in an R shape, and by tilting the operation shaft, the convex piece of the movable contact piece slides on the substantially corrugated inclined base provided on the bottom surface of the case, and the center of the case Since the movable contact piece is in contact with the common contact and the fixed contact disposed on both side surfaces, the distance between the contacts can be wider than that of the conventional seesaw type toggle switch, and the arc can be easily cut. .
(2) Since the elastic member arranged between the converter and the movable contact piece is a taper spring, the contact area with the R-shaped movable contact piece can be made wider than the arrangement of the normal coil spring, and the movable member can be moved. The pressing force against the contact piece can be increased.
(3) Since the front end near the both sides of the substantially wavy tilt base is the top, and the tilt from the top to the end is slightly downward, the operating shaft is tilted so that the convex piece of the movable contact piece is the tilt base. The convex piece floats off the inclined base when it slides over the top, and the pressing force of the taper spring disposed on the movable contact piece works with that force, and the common contact of the movable contact piece And sufficient contact force with respect to a fixed contact can be ensured.
(4) Compared with a conventional seesaw type toggle switch in which the toggle switch of the present invention is a hitting contact type, the movable contact piece is sufficient for the common contact and the fixed contact due to the pressing force of the taper spring disposed above the movable contact piece. Since the movable contact piece, the common contact, and the fixed contact are slightly slid immediately after contacting with a small contact force, the foreign material is attached to the fixed contact. It can be scraped off. In addition, contact welding unlike the conventional seesaw type toggle switch is less likely to occur when the sliding state is changed from the on state to the off state.

  The present invention includes a case disposed so as to oppose a support shaft having a rising piece, a hook piece on the upper portion, pivotally supported on the rising piece, and a lower portion provided with a converter to be rotatable. The rotary plate, a movable contact piece having a projecting piece disposed below the converter via a taper spring, and a toggle switch having a case cover and a bushing disposed on the upper surface of the case. The bottom surface of the converter and the movable contact piece are formed in an R shape, and by tilting the operation shaft, the convex piece of the movable contact piece slides on the substantially corrugated tilt base provided on the bottom surface in the case. The convex piece floats off the inclined base beyond the top of the platform, and the pressing force of the taper spring disposed on the movable contact piece works by the momentum, and sufficient contact of the movable contact piece with the common contact and the fixed contact is achieved. Immediately after contact with force If the foreign matter is adhered to the fixed contact for the the contact piece common contact and the fixed contact is slightly slid and turned on by structure, it is possible to scrape this slight sliding. In addition, this slight sliding makes contact welding unlike the conventional seesaw type toggle switch of the hitting contact type difficult to occur.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an exploded perspective view of the toggle switch of the present invention, and FIG. 2 is a cross-sectional view of the toggle switch of the present invention. In these drawings, the support shaft 13 having the rising piece 13a in the arrangement groove 14a provided in the case 14 is moved upward until the bent portion 13b of the support shaft 13 contacts the stepped portion 14b of the arrangement groove 14a. Insert from. A common contact 16 and a fixed contact 17 are inserted from above into a hole (not shown) provided in the bottom surface of the case 14, and are inserted into a round hole 18a of the common terminal 18 and a round hole 19a of the contact terminal 19, respectively. By caulking the remaining margins under the common contact 16 and the fixed contact 17 projecting from 18a and 19a, four parts of the common contact 16, the fixed contact 17, the common terminal 18, and the contact terminal 19 are made into the case 14. Securely fix to. An inclined base 14 c is provided on the inner bottom surface of the case 14. The inclined base 14c has a substantially wave shape, with the front of the outer end of the case 14 as the top, and the inclination from the top to the end and the inclination from the top to the center are directed downward. In addition, the movable contact piece 12 having the convex piece 12a and the bent tongue piece 12b provided thereon is placed above the inclined base 14c, and the radius of curvature of the inclined base 14c is almost the same as the curvature radius.

  A converter 10 having a long groove (not shown) on the bottom and a hole 10b on the top of the movable contact piece 12 has a taper spring 11 in the hole 10b of the converter 10 and a bent tongue piece of the movable contact piece 12. 12b is inserted into the long groove (not shown) and placed. Thereby, even if the converter 10 is tilted left and right, the taper spring 11 and the movable contact piece 12 can be tilted simultaneously.

  Next, a plate 9b made of resin and having a round hole 9a in the center, and a metal piece 9d made of metal and having a hook piece 9c on the top are integrally formed by insert molding to form a rotating plate 9. The round hole 9 a is disposed in the convex portion 10 a at the top of the converter 10, and the hook piece 9 c is pivotally supported by the rising piece 13 a of the support shaft 13. In this state, the coil spring 8 is inserted into the convex portion 10 a of the converter 10 through the round hole 9 a of the rotating plate 9, and the connector 7 is disposed above the coil spring 8.

  Next, a keyway 5a in which a bushing 5 is provided from below the through hole 6a at the center of the case cover 6 from the uppermost stage to the front of the lowermost side of the bushing 5, and a protrusion 6b on the inner surface of the through hole 6a at the center of the case cover 6 The bushing 5 is inserted in such a way that it is fitted together and locked at the bottom of the bushing 5. In this way, the case cover 6 and the bushing 5 are locked, and the operation shaft 1 is inserted from below the through hole 6 a of the case cover 6. The operating shaft 1 is inserted into the bushing 5 and the sphere portion 1a at the center of the operation shaft 1 comes into contact with the top surface portion 5b of the bushing 5 to prevent the operation shaft 1 from coming off upward.

  In this state, the protrusion 6d protruding downward from the case cover 6 is aligned with the hole 14e of the case 14 and the screw hole 6c of the case cover 6 is aligned with the screw hole 14d of the case 14, respectively. Is placed above the case 14 and screwed from below the case 14 with a screw 15 to complete the toggle switch of the present invention. The protrusion 6d and the hole 14e are provided to prevent the case cover 6 from being attached in the opposite direction.

  When the toggle switch is attached to a panel (not shown), the hexagonal nut 4 and the bushing 5 provided with an internal tooth washer 3 for preventing loosening of the hexagonal nut 4 are provided in a hole (not shown) provided in the panel. After being inserted into the hole (not shown) of the panel, the round nut 2 is disposed on the bushing 5 and tightened to the panel (not shown), so that the panel can be attached.

  FIGS. 3A, 3B, 3C, and 3D are sectional views showing the state in which the operation shaft 1 of the toggle switch of the present invention is tilted. FIG. 4 (a), FIG. 4 (b), FIG. 4 (c), and FIG. 4 (d) are shown. 3 (a) and FIG. 4 (a), FIG. 3 (b) and FIG. 4 (b), FIG. 3 (c) and FIG. 4 (c), FIG. 3 (d) and FIG. Each corresponds.

When the operating shaft 1 is in the center as shown in FIGS. 3A and 4A, the convex piece 12a of the movable contact piece 12 is placed on the inclined base 14c. However, since the diagrams shown in FIGS. 3 and 4 are on-on types, they do not actually stop at the center. When the operation shaft 1 is tilted from this state, as shown in FIGS. 3 (b) and 4 (b), the tilt base 14c is gradually slid along the tilt base 14c. It reaches to the top of the tilt table 14c.
At this time, since the movable contact piece 12 is inserted into a long groove (not shown) on the bottom surface of the converter 10 and receives a pressing force through the taper spring 11 therebetween, the converter 10 Are surely followed and slid on the inclined table 14c.

  Thereafter, the convex piece 12a of the movable contact piece 12 starts to float from the inclined base 14c as shown in FIGS. 3C and 4C, and then upward as shown in FIGS. 3D and 4D. The movable contact 12c of the movable contact piece 12 comes into contact with the fixed contact 17 and the common contact 16 by the pressing force of the taper spring 11 from and is turned on by slightly sliding with its momentum. Similarly, when turning off, after the movable contact 12c slightly slides with the fixed contact 17 and the common contact 16, the convex piece 12a rides on the inclined base 14c again and follows the inclination of the inclined base 14c. Go down. This slightly sliding operation prevents contact welding like a conventional seesaw type toggle switch.

  In this way, the inclined base 14c guides sliding of the convex piece 12a of the movable contact piece 12 to the left and right when the operation shaft 1 is tilted, and the convex piece 12a reaches the top of the inclined base 14c. Immediately after that, the movable contact 12c comes into contact with the fixed contact 17 and the common contact 16 with sufficient contact force by the pressing force of the taper spring 11 disposed in the hole 10b on the bottom surface of the converter 10, and as it is, The movable contact 12c is turned on by slightly sliding with the fixed contact 17 and the common contact 16.

  The toggle switch of the present invention can be variously modified based on the gist of the present invention in addition to the above embodiments. These are not excluded from the scope of the method of the present invention.

  The toggle switch of the present invention has a structure in which a movable contact piece, which is pressed into an R shape on the inclined table, slides to contact a common contact and a fixed contact by disposing an inclined table in the case. Since the distance between the contact and the fixed contact can be increased to make it easier to cut off the arc that is generated when the contact is separated from on to off, it is suitable for opening and closing a large current.

It is a disassembled perspective view of the toggle switch of this invention. It is sectional drawing of the toggle switch of this invention. It is sectional drawing which showed the mode at the time of tilting of the operating shaft of the toggle switch of this invention. It is the top view which showed the mode at the time of the operation-axis tilting of the toggle switch of this invention. It is sectional drawing of the conventional seesaw type toggle switch.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Operation shaft 1a Spherical part 2 Round nut 3 Internal tooth washer 4 Hexagon nut 5 Bushing 5a Keyway 5b Top surface part 6 Case cover 6a Through-hole 6b Projection 6c, 14d Screw hole 6d Protrusion 7 Connector 8 Coil spring 9 Rotating plate 9a , 18a, 19a Round hole 9b Flat plate 9c Hook piece 9d Metal piece 10 Transducer 10a Convex portion 10b, 14e Hole 11 Taper spring 12 Movable contact piece 12a Convex piece 12b Bending tongue piece 12c Movable contact 13 Support shaft 13a Rising piece 13b Bending Part 14 Case 14a Disposition groove 14b Step part 14c Inclined base 15 Screw 16 Common contact 17 Fixed contact 18 Common terminal 19 Contact terminal

Claims (3)

  A case with a support shaft having a rising piece disposed so as to oppose, and a rotating plate that has a hook piece at the top and is pivotally supported by the rising piece, and a lower part is provided with a converter. In a toggle switch in which a movable contact piece having a convex piece disposed below the converter via an elastic member and a bushing for supporting an operation shaft on the upper surface of the case together with a case cover are provided. The bottom surface of the converter and the movable contact piece are formed in an R shape, and the operation shaft is tilted, whereby the convex piece of the movable contact piece slides on the substantially waveform inclined base provided on the bottom surface of the case to open and close the electric circuit. Toggle switch featuring   The toggle switch according to claim 1, wherein the elastic member is a taper spring.   The toggle switch according to claim 1 or 2, wherein a front end of the substantially corrugated tilt base is a top, and an inclination from the top to the end is directed downward.

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