JP2013065503A - Switch device with reset function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a switch device.SOLUTION: According to the present invention, an electromagnetic device 25 is arranged on one end of a case 21, and the electromagnetic device 25 comprises a bobbin 47 around which a coil 58 is wound, a first yoke 48 that is fixed to the bobbin 47 and around which the coil 58 is provided, a second yoke 49 provided on the bobbin 47 so that it can contact one end of a handle 22 and slide in an approaching and separating direction to the first yoke 48, an energization member 51 energizing the second yoke 49 in a separating direction of the first yoke 48, and a magnet 50 adsorbing the second yoke 49 to the first yoke 48. When the one end of the handle 22 is pressed to incline the handle 22 to one side, the handle 22 presses the second yoke 49, and the second yoke 49 moves in a direction for approaching to the first yoke 48 and is adsorbed to the first yoke 48 by an adsorption force of the magnetic force 50. A movable piece 23 swings in a direction opposite to an inclination direction of the handle 22, and a movable contact 45 comes into contact with a stationary contact 44 into an on-condition.

Description

  The present invention relates to a switch device with a reset function in which a movable piece swings as the handle tilts, and a movable contact and a fixed contact of the movable piece come into contact with or separate from each other.

  2. Description of the Related Art Conventionally, a so-called rocker switch that opens and closes contacts by operating a handle is well known as a power supply switch device used in electronic devices and the like. Such a rocker switch was mainly used to open and close the primary circuit of the power supply. However, due to the recent increase in interest in energy saving, the power during standby (standby) can be turned off by external energization operation. There is an increasing need for a switch device with a reset function having a function to minimize the number of functions.

  As this type of switch device, for example, as shown in FIG. 12, a handle 4 having a lever portion 1 and a pressing portion 2 and tiltable with respect to the case 3, and an electromagnet device 5 provided in the case 3. And a slider 7 having an iron plate 6 magnetized by a permanent magnet and arranged in the case 3 so as to be slidable with respect to the electromagnet device 5, and a return spring 8 compressed by the pressing portion 2 of the handle 4. Are known (for example, see Patent Document 1).

  When this switch device is in the ON state, the iron plate 6 is attracted to the attracting portion 10 of the yoke 9 of the electromagnet device 5 by the magnetic force of the permanent magnet, and the return spring 8 is compressed by the pressing portion 2. In order to change from the on state to the off state, the coil 11 of the electromagnet device 5 is energized to excite the yoke 9, and the attracting portion 10 of the yoke 9 generates a repulsive force against the magnetic force of the permanent magnet. Accordingly, the adsorption force of the iron plate 6 is decreased, the handle 4 is tilted to the opposite side by the spring force of the return spring 8, and the slider 7 is slid away from the adsorption portion 10, or the handle 4 is pressed with a finger. Then, it is tilted to the opposite side, and the slider 7 is slid in a direction away from the suction portion 10 and is manually turned off.

Japanese Patent Laid-Open No. 9-204853

  Recently, demands for energy saving and ecology tend to increase, and devices that require restrictions on power consumption and standby power have been diversified. For this reason, there is an increasing need for further downsizing of a switch device with a reset function that has been widely used only for large-sized devices that consume much power.

  However, in the above conventional switch device with a reset function, the electromagnet device 5 is large and has a complicated mechanism, and the ratio of the electromagnet device 5 to the entire switch device is large. There was a problem that it was difficult to make it easier.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a switch device with a reset function that can be miniaturized.

  In order to achieve the above object, the present invention provides a handle that is provided so as to be tiltable with respect to a case, a movable piece that swings as the handle tilts, and a movable piece that swings as the movable piece swings. A switch device with a reset function having a fixed contact that contacts or separates from the movable contact, wherein an electromagnet device is disposed on one end side of the case, and the electromagnet device is a coil to which a voltage is applied from the outside. A bobbin around which the coil is wound, a first yoke fixed to the bobbin and provided with the coil around the bobbin, abutting on one end of the handle, and close to and away from the first yoke A second yoke provided on the bobbin so as to be slidable, a biasing member that biases the second yoke in a direction away from the first yoke, and the second yoke as the first yoke Magnet attracted to the yoke When the handle is tilted to one side by pressing one end of the handle, the handle presses the second yoke, and the second yoke approaches the first yoke. And is attracted to the first yoke by the attraction force of the magnet, the movable piece swings in a direction opposite to the tilting direction of the handle, and the movable contact comes into contact with the fixed contact and is turned on. It is characterized by becoming.

  In the switch device with a reset function according to the present invention, the magnet is attracted to the second yoke and slidable in the direction of approaching and separating from the first yoke together with the second yoke. It is preferred that

  In the switch device with a reset function according to the present invention, when the magnet attracting force is reduced or eliminated by applying a voltage to the coil from the outside, the second yoke is moved by the biasing force of the biasing member. By moving in a direction away from the first yoke and pressing the handle, the handle tilts to the other side, the movable piece swings in a direction opposite to the tilt direction of the handle, and the movable contact Is separated from the fixed contact and is turned off.

  Further, in the switch device with a reset function according to the present invention, when the other end portion of the handle is pressed to tilt the handle to the other side, the movable piece swings in a direction opposite to the tilting direction of the handle, The movable contact is separated from the fixed contact and is turned off.

  Further, in the switch device with a reset function according to the present invention, a spring is provided between the handle and the movable piece, and the spring is bent in a direction opposite to the tilt direction of the handle when the handle is tilted. The tilting posture of the handle is maintained.

  According to the present invention, since the electromagnet device is disposed on one end side of the case, the ratio of the electromagnet device to the entire switch device can be reduced, and the switch device can be downsized. Various excellent effects can be obtained.

It is a front view which shows the ON state of the switch apparatus with a reset function which concerns on embodiment of this invention. It is a side view which shows the ON state of the switch apparatus with a reset function which concerns on embodiment of this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is a perspective view which shows the electromagnet apparatus of the switch apparatus with a reset function which concerns on embodiment of this invention. It is a side view which shows the bobbin of the electromagnet apparatus of the switch apparatus with a reset function which concerns on embodiment of this invention. It is a bottom view which shows the bobbin of the electromagnet apparatus of the switch apparatus with a reset function which concerns on embodiment of this invention. It is a perspective view which shows the bobbin of the electromagnet apparatus of the switch apparatus with a reset function which concerns on embodiment of this invention from the bottom face side. It is a side view which shows the terminal pin press-fitted and hold | maintained at the bobbin of the electromagnet apparatus of the switch apparatus with a reset function which concerns on embodiment of this invention. It is sectional drawing which shows the OFF state of the switch apparatus with a reset function which concerns on embodiment of this invention. It is sectional drawing which shows the conventional switch apparatus with a reset function.

  Hereinafter, a switch device with a reset function according to an embodiment of the present invention will be described with reference to the drawings. Here, FIG. 1 is a front view showing the ON state of the switch device with a reset function according to the embodiment of the present invention, and FIG. 2 is a side view showing the ON state of the switch device with a reset function according to the embodiment of the present invention. 3 is a sectional view taken along the line AA in FIG. 2, FIG. 4 is a sectional view taken along the line BB in FIG. 1, FIG. 5 is a sectional view taken along the line CC in FIG. FIG. 7 is a side view showing a bobbin of the electromagnet device of the switch device with a reset function according to the embodiment of the present invention, and FIG. 8 is a reset function according to the embodiment of the present invention. FIG. 9 is a perspective view showing the bobbin of the electromagnet device of the switch device with a reset function according to the embodiment of the present invention from the bottom side, and FIG. 10 is a diagram of the embodiment of the present invention. With reset function according to form Side view of a terminal pin to be press-fitted holding the bobbin of the electromagnetic device of the switching device, FIG. 11 is a sectional view illustrating an off state of the reset switch with apparatus according to the embodiment of the present invention.

  Note that the switch device with a reset function according to the embodiment of the present invention changes the vertical and horizontal directions and the front and rear directions depending on the installed state. In the following description, the vertical and horizontal directions are shown in FIGS. 3 and FIG. 11 is used as a reference, and the front side of FIGS. 1, 3 and 11 is assumed to be the front side.

  The switch device 20 with a reset function according to the embodiment of the present invention includes a bottomed box-like case 21, a handle 22 that can be tilted to the left and right at the top of the case 21, and the tilt of the handle 22. A pair of front and rear movable pieces 23 provided in the case 21 so as to be able to swing, a pair of fixed pieces 24 press-fitted into the bottom of the case 21 in front and rear corresponding to the movable piece 23, and the inside of the case 21 And an electromagnet device 25 disposed at the left end of the main body.

  The case 21 has a long shape in the left-right direction, and an opening 26 is formed at the upper end. Inside the case 21, a first partition wall 29 is formed between the front wall 27 and the rear wall 28 at the left end, and the first partition wall 29 causes a vertically long electromagnetic device housing space 30 to be formed at the left end. Is formed, and a movable piece housing space 31 is formed on the right side of the electromagnet device housing space 30. Further, a second partition wall 33 is formed between the first partition wall 29 and the right wall 35 inside the case 21, and the movable piece housing space 31 is made a front and rear space by the second partition wall 33. It is partitioned.

  A flange portion 34 is provided on the outer periphery of the upper end of the case 21, and a spring piece 36 projects outwardly from the outer peripheral surface of the left and right side walls 35 of the case 21 below the flange portion 34. When the switch device 20 is mounted in a hole (not shown) provided in an electronic device or the like, the spring piece 36 abuts against the inner surface of the hole to prevent the switch device 20 from dropping from the hole. It is configured as follows.

  The handle 22 is provided so as to close the opening 26 of the case 21. A fitting projection 37 is provided at the front and rear center portion of the handle 22, and the fitting projection 37 is pivotally provided in a fitting hole (not shown) drilled in the front and rear center portion of the upper end of the case 21. Thus, the handle 22 is supported on the upper portion of the case 21 so as to be tiltable to the left and right. On the upper surface of the handle 22, there is provided an operation surface 38 that is curved downward in an arc shape, and on the lower surface of the handle 22, a pair of left and right engaging protrusions 39, 40 are spaced apart from each other at a predetermined interval. It protrudes downward, and a contact portion 41 protrudes downward at the left end.

  Each movable piece 23 is disposed in each of the front and rear movable piece accommodation spaces 31 and is pivotally provided at the upper end of a support piece 42 extending upward from the left fixed piece 24 in each movable piece accommodation space 31. The support piece 42 can swing left and right with the upper end portion as a fulcrum. On the upper surface of each movable piece 23, a spring receiving portion 43 protrudes upward from a pivoted portion of the upper end portion of the support piece 42, and a compression coil spring (not shown) is attached to the spring receiving portion 43. The spring receiving portion 43 and the upper end portion of the compression coil spring are supported between a pair of left and right engaging projections 39 and 40. A movable contact 45 is formed at the right end of the lower surface of each movable piece 23 so as to face the fixed contact 44 of the fixed piece 24. Further, a stopper 46 is formed at the left end of each movable piece 23 by bending downward.

  The electromagnet device 25 has a vertically long shape and is disposed in the electromagnet device housing space 30. The electromagnet device 25 is made of a synthetic resin bobbin 47, a first yoke (iron core) 48 fixed to the bobbin 47, and a first electromagnet device 25. A second yoke 49 provided on the bobbin 47 so as to be slidable in the direction of approaching and separating from the yoke 48, and a single magnet 50 for attracting the second yoke 49 to the first yoke 48; A return spring 51 that urges the second yoke 49 in a direction away from the first yoke 48 is mainly configured.

  The bobbin 47 has a square shape in front view and side view, and a pedestal portion 52 supported on the bottom of the electromagnet device accommodation space 30 and a winding holding portion formed in a concave shape on the pedestal portion 52. 53 and a top portion 54 formed on the winding holding portion 53.

  The pedestal portion 52 has a horizontal groove portion 55 formed in the left-right direction on the bottom surface, and a vertical groove portion 56 formed in the vertical direction at the left and right ends so as to be continuous with the horizontal groove portion 55. Further, two groove portions 65 in which the terminal pins 64 are press-fitted and held are formed on the bottom surface of the pedestal portion 52.

  The terminal pin 64 has a shape obtained by bending a round pin into a hook shape, and is formed such that one end 66 is longer than the other end 67 and the both ends protrude vertically from the bottom surface of the bobbin 47. Retained. One end of the terminal pin 64 is used for a terminal pin fitting with a 66 connector (not shown), and the other end 67 is used for a wire carrag soldering portion as a terminal treatment of a coil 58 described later. Conventionally, the wire carragage soldering portion has protruded to the outside of the bobbin in a plan view, so that a large electromagnet housing space is required as a whole, but in this embodiment, it is configured as described above. Therefore, the electromagnet device housing space 30 can be saved and the switch device 20 can be reduced in size because it does not protrude outside the bobbin 47 in plan view.

  A through hole 57 is formed in the winding holding portion 53 in the vertical direction. A coil 58 is wound around the winding holding portion 53, and the coil 58 is provided outside the switch device 20. It is electrically connected to a power source (not shown). Further, a concave portion 59 is formed on the top surface of the top portion 54, and the lateral groove portion 55 and the concave portion 59 communicate with each other through a through hole 57. Further, vertical groove portions 60 are formed in the left and right ends of the top portion 54 in the vertical direction.

  The first yoke 48 has an inverted T-shape when viewed from the front, and is inserted into the through hole 57, the lateral groove portion 55, and the longitudinal groove portion 56 from below the pedestal portion 52. Protrusions 61 are formed on the left and right ends of the yoke 48 respectively upward.

  The second yoke 49 has an inverted U-shape when viewed from the front, and has a rectangular pressing plate 62 formed on the upper portion and left and right arms bent downward from both left and right sides of the pressing plate 62 and suspended. Part 63. The left and right arm portions 63 are provided so that the lower ends thereof are slidable in the longitudinal groove portions 60 of the top portion 54 at positions where the lower ends thereof face the protruding portions 61 of the first yoke 48.

  The magnet 50 has a cylindrical shape, is attracted to the lower surface of the pressing plate 62 of the second yoke 49, and is slidable in the direction of approaching and separating from the first yoke 48 together with the second yoke. Is provided. The return spring 51 is provided around the magnet 50, and the lower end of the return spring 51 is fitted in the recess 59 of the top 54. The attracting force of the magnet 50 is set to be larger than the biasing force of the return spring 51.

  Next, an operation when the switch device 20 with the reset function configured as described above is switched from the on state to the off state will be described.

  1 to 5 show a state in which the handle 22 is tilted to the left in front view. In this state, in the electromagnet device housing space 30, the pressing plate 62 is pressed by the contact portion 41 of the handle 22, so that the second yoke 49 resists the urging force of the return spring 51. It descends in the direction approaching 48 and is attracted to the first yoke 48 by the attracting force of the magnet 50.

  At this time, a slight gap 68 is formed between the protrusion 61 of the first yoke 48 and the lower ends of the left and right arm parts 63 of the second yoke 49, and thus the gap 68 is formed. The attracting surface 69 (see FIG. 4) between the first yoke 48 and the magnet 50 always comes into contact. The gap 68 is desirably larger than 0 mm and smaller than 1 mm in order to maintain the entire attractive force and the closed magnetic circuit structure.

  In this case, the suction surface is provided so that the projection 61 of the first yoke 48 and the lower ends of the left and right arm portions 63 of the second yoke 49 are in contact with each other by reversing the relationship between the gap and the suction surface. A gap may be provided between one yoke 48 and the magnet 50.

  Further, in the movable piece housing space 31, each movable piece 23 swings in the direction opposite to the tilting direction of the handle 22 (right side in front view), and the movable contact 45 comes into contact with the fixed contact 44 and is turned on. When the coil spring is bent in the same direction as the movable piece 23 (right side as viewed from the front), the on state in which the movable contact 45 is in contact with the fixed contact 44 and the tilting posture of the handle 22 in this on state are maintained.

  Next, when the handle 22 is tilted to the left side as described above, when a constant voltage is applied to the coil 58 from the power source provided outside the switch device 20 and an energization-off operation is performed, in the electromagnet device housing space 30, A magnetic field in a direction that cancels the magnetic field of the magnet 50 is generated in the coil 58 and the first yoke 48, and the attractive force of the magnet 50 disappears or decreases. As a result, the biasing force of the return spring 51 becomes larger than the attracting force of the magnet 50, so that the magnet 50 rises with the second yoke 49 in the direction away from the first yoke 48, and the pressing plate 62 is applied. By pushing up the contact portion 41, the handle 22 tilts to the opposite side (right side) with the fitting projection 37 as a fulcrum (see FIG. 7).

  As the handle 22 is tilted to the opposite side, the engaging protrusions 39 and 40 operate the spring receiving portion 43 and the upper end of the compression coil spring so that each movable piece 23 is in a direction opposite to the tilting direction of the handle 22 (viewed from the front). The movable contact 45 is separated from the fixed contact 44 and is turned off. At this time, the compression coil spring is bent in the same direction as the movable piece 23 (left side in a front view), thereby suppressing the tilting of the handle 22 to the left side, and the stopper 46 comes into contact with the fixed piece 24 to thereby handle the handle. Excessive tilting of the right side 22 to the right side is suppressed, the off state in which the movable contact 45 is separated from the fixed contact 44, and the tilting posture of the handle 22 in this off state are maintained.

  When the switch device 20 that has been switched from the on state to the off state is turned on again, the left side portion of the operation surface 38 of the handle 22 is pressed from the state in which the handle 22 is tilted to the right side, and the fitting is performed. The handle 22 is again tilted to the left with the mating protrusion 37 as a fulcrum. As a result, the contact portion 41 of the handle 22 presses the pressing plate 62, the second yoke 49 descends in the direction approaching the first yoke 48 against the biasing force of the return spring 51, and the magnet 50 It is attracted to the first yoke 48 by the attracting force. Further, each movable piece 23 swings in a direction opposite to the tilting direction of the handle 22 (right side in front view), and the movable contact 45 comes into contact with the fixed contact 44 and is turned on.

  When the switch device 20 with a reset function is manually changed from the on state to the off state, the handle 22 is tilted to the left as shown in FIGS. Press the part. Then, the handle 22 tilts to the opposite side (right side) with the fitting projection 37 serving as a fulcrum, and as the handle 22 tilts, the engagement projections 39 and 40 operate the spring receiving portion 43 and the upper end portion of the compression coil spring. Thus, each movable piece 23 swings in a direction opposite to the tilting direction of the handle 22 (left side in a front view), and the movable contact 45 is separated from the fixed contact 44 and is turned off. Then, the compression coil spring is bent in the same direction as the movable piece 23 (left side as viewed from the front), so that the tilting of the handle 22 to the left is suppressed, and the stopper portion 46 abuts against the fixed piece 24 so that the handle 22 An excessive tilting to the right side is suppressed, the off state in which the movable contact 45 is separated from the fixed contact 44, and the tilting posture of the handle 22 in this off state are maintained. At this time, in the electromagnet device housing space 30, as the handle 22 tilts to the right side, the contact portion 62 is separated from the pressing plate 62 of the second yoke 49, but the second yoke 49 is moved to the magnet 50. The state of being attracted to the first yoke 49 due to the attraction force remains.

  In the above-described embodiment of the present invention, the attracting force of the magnet 50 is set to be larger than the biasing force of the return spring 51, but the present invention is not necessarily limited to this case, and the magnet 50 is set so that the elastic force generated when the compression coil spring is bent is larger than the force by which the biasing force of the return spring 51 exceeds the biasing force of the magnet 50. You can also In this case, when the switch device 20 with the reset function is manually turned from the on state to the off state, the magnet 50 moves the second yoke 49 in the electromagnet device accommodation space 30 in the same manner as when the energization is turned off. Along with this, the first yoke 48 is moved away from the first yoke 48 and raised toward the handle 22, and the pressing plate 62 pushes up the contact portion 41.

  As described above, according to the switch device 20 with a reset function according to the above-described embodiment of the present invention, the electromagnet device 25 has a vertically long and compact structure, and in particular, the dimension in the front-rear direction can be significantly shortened. it can. Therefore, the ratio of the electromagnet device 25 to the entire switch device 20 can be reduced, and the switch device 20 can be downsized.

  Moreover, since the switch device 20 with a reset function according to the above-described embodiment of the present invention is configured to be able to selectively use a manual off operation and an energization off operation as necessary, the versatility of the switch device 20 Can be increased. In addition, when the power is turned off, it is possible to forcibly switch from the on state to the off state by applying a voltage to the coil 58 from an external power supply. It is possible to easily cope with safety measures at the time of off operation or abnormality detection.

  In addition, since description of embodiment of this invention mentioned above has demonstrated the preferred embodiment in the switch apparatus which concerns on this invention, although there may be a technically preferable various limitation, The technical scope of the present invention is not limited to these embodiments unless specifically described to limit the present invention. Furthermore, the components in the embodiment of the present invention described above can be appropriately replaced with existing components and the like, and various variations including combinations with other existing components are possible. The description of the embodiment of the present invention described above does not limit the contents of the invention described in the claims.

20 switch device 21 case 22 handle 23 movable piece 24 fixed piece 25 electromagnet device 44 fixed contact 45 movable contact 47 bobbin 48 first yoke 49 second yoke 50 magnet 51 return spring (biasing member)
58 coils

Claims (5)

A handle that is tiltable with respect to the case, a movable piece that swings as the handle tilts, a fixed contact that contacts or separates from the movable contact of the movable piece as the movable piece swings, A switch device with a reset function comprising:
An electromagnet device is disposed on one end side of the case, and the electromagnet device is
A bobbin around which a coil to which voltage is applied from the outside is wound;
A first yoke fixed to the bobbin and provided with the coil around it;
A second yoke provided on the bobbin so as to be able to come into contact with one end of the handle and to slide in a direction approaching and separating from the first yoke;
A biasing member that biases the second yoke in a direction away from the first yoke;
A magnet for attracting the second yoke to the first yoke;
With
When one end of the handle is pressed and the handle is tilted to one side, the handle presses the second yoke, and the second yoke moves in a direction close to the first yoke. The magnet is attracted to the first yoke by the attracting force of the magnet, the movable piece swings in a direction opposite to the tilting direction of the handle, and the movable contact contacts the fixed contact and is turned on. A switch device with a reset function.   2. The switch with a reset function according to claim 1, wherein the magnet is attached to the second yoke and is slidable together with the second yoke in a direction of approaching and separating from the first yoke. apparatus.   When the attracting force of the magnet is reduced or eliminated by applying an external voltage to the coil, the second yoke is moved away from the first yoke by the biasing force of the biasing member. By pressing the handle, the handle tilts to the other side, the movable piece swings in a direction opposite to the tilting direction of the handle, and the movable contact is separated from the fixed contact and is turned off. The switch device with a reset function according to claim 1.   When the other end of the handle is pressed and the handle is tilted to the other side, the movable piece swings in a direction opposite to the tilting direction of the handle, and the movable contact is separated from the fixed contact and turned off. The switch device with a reset function according to claim 1, wherein the switch device has a reset function. A spring is provided between the handle and the movable piece, and when the handle is tilted, the spring is bent in a direction opposite to the tilting direction of the handle to maintain the tilting posture of the handle. The switch device with a reset function according to any one of claims 1 to 4.