JP5898564B2 - Press switch device - Google Patents

Description

  The present invention relates to a push-type switch device, and more particularly, to a push-type switch device including a snap action mechanism that operates in response to a push operation on an operation member.

  Conventionally, in a press-type switch device that receives a pressing operation on an operation member, a common fixed terminal piece, a lever whose base end is pivotally locked to the common fixed terminal piece via a first fulcrum A, and a base end Is fixed to the proximal end side of the movable piece of the common fixed terminal piece via the third fulcrum C and a movable piece that is pivotally locked via the second fulcrum B near the tip of the lever. There has been proposed a structure comprising a compression spring that has a compression spring that is engaged with the distal end side of the movable piece via the fourth fulcrum D and that imparts a snap action to the movable piece.

Japanese Patent Laid-Open No. 2002-358858, FIG.

  However, in the conventional press-type switch device described above, compression is performed between the third fulcrum C and the fourth fulcrum D that are separated from the second fulcrum B that constitutes the pivot point of the movable piece. Since the spring is arranged, there is a problem that the apparatus is enlarged according to the size of the compression spring, and it is difficult to downsize the apparatus. In order to reduce the size of the device, it is conceivable to reduce the size of the compression spring. However, in this case, there is a problem that the load applied to the compression spring increases and it is difficult to extend the life of the compression spring (and thus the pressing switch device).

  The present invention has been made in view of such problems, and provides a pressing switch device having a snap action mechanism that can reduce the size of the device while extending the life of the compression spring. With the goal.

A pressing switch device according to the present invention includes a housing having a storage portion, an operation member that receives a pressing operation, a fixed contact terminal having a common contact terminal and a switching contact terminal provided in the storage portion, and the switching contact terminal. A pressing switch device comprising a movable contact that contacts and separates and a snap action mechanism that drives the movable contact when the operation member is pressed to a predetermined position, wherein the common contact terminal is disposed in the storage portion. The snap action mechanism is configured such that the one end side is supported on the common contact terminal by a first rotation fulcrum and the movable contact is provided on the other end side of the conductor plate. A driving plate whose one end is engaged at two rotation fulcrums, and one end of the driving plate is locked at a third rotation fulcrum located on the first rotation fulcrum side at the other end of the driving plate. A compression spring comprising a leaf spring that is engaged with a fixed base integrated with the housing at a fourth rotation fulcrum, the other end of which is located on the second rotation fulcrum side, A spring and the drive plate are formed in an annular shape, and the common contact terminal is passed through the opening. The snap action mechanism includes the second rotation fulcrum and the first The driving plate or a part of the compression spring disposed on the side opposite to the rotation fulcrum 4 receives a pressing force of the operation member, and on the side opposite to the first rotation fulcrum across the switching contact terminal. The fourth rotation fulcrum is arranged .

  According to this press-type switch device, the common contact terminal is disposed through the opening of the annularly formed compression spring and drive plate, so that the common contact terminal can be disposed inside the compression spring and drive plate. Therefore, it is not necessary to separately provide an installation area for the common contact terminal, and the apparatus can be miniaturized. In addition, since the common contact terminal is arranged inside the compression spring, the compression spring can be arranged while making maximum use of the space in the storage portion, so that the spring length of the compression spring can be secured and the load applied to the compression spring is distributed. Thus, the life of the compression spring can be extended. As a result, it is possible to reduce the size of the device while extending the life of the compression spring.

In the pressing switch device, the second rotation fulcrum constituting the rotation fulcrum of the drive plate and the fourth rotation fulcrum constituting the rotation fulcrum of the compression spring with respect to the common contact terminal as a reference. Since it is possible to receive a pressing force from the operating member at the position, it is possible to secure the length of the point of action of the pressing force from the operating member and the second or fourth rotating fulcrum. It becomes possible to lengthen the stroke of the pressing operation.

Further, in the above pressing type switch device, since the fourth rotation fulcrum constituting the rotation fulcrum of the compression spring is arranged at the position opposite to the first rotation fulcrum with respect to the switching contact terminal, Since the spring length of the compression spring can be designed to be long, it is possible to extend the life of the compression spring by distributing the load applied to the compression spring.

  Furthermore, in the press-type switch device, it is preferable that the snap action mechanism forms the first rotation fulcrum on a part of an end surface of the common contact terminal on the switching contact terminal side. In this case, since the first rotation fulcrum, which is the rotation fulcrum of the conductor plate, is formed on a part of the end surface of the common contact terminal, conduction between the common contact terminal and the conductor plate can be achieved with a simple configuration. The conductor plate can be rotated while making it possible.

Alternatively, the press-type switch device of the present invention includes a housing having a storage portion, an operation member that receives a pressing operation, a fixed contact terminal having a common contact terminal and a switching contact terminal provided in the storage portion, and the switching contact. A pressing switch device comprising: a movable contact that contacts and separates from a terminal; and a snap action mechanism that drives the movable contact when the operation member is pressed to a predetermined position. The snap action mechanism includes a conductor plate in which one end side is supported by the common contact terminal at a first rotation fulcrum and the movable contact is provided, and the other end side of the conductor plate. A drive plate whose one end is engaged at the second rotation fulcrum, and a third rotation fulcrum located on the first rotation fulcrum side at the other end of the drive plate. A compression spring comprising a leaf spring which is stopped and is engaged with a fixed base integrated with the housing at a fourth rotation fulcrum located on the second rotation fulcrum side at the other end side. The compression spring and the drive plate are formed in an annular shape, and the common contact terminal is passed through the opening thereof, so that the snap action mechanism can pass through the openings of the compression spring and the drive plate. The conductor plate is arranged . In this case, since the conductor plate is disposed so as to be able to pass through the openings of the compression spring and the drive plate, it is possible to prevent the conductor plate from contacting the compression spring and the drive plate when the compression spring and the drive plate rotate. The compression spring and the drive plate can be smoothly rotated.

Alternatively, the press-type switch device of the present invention includes a housing having a storage portion, an operation member that receives a pressing operation, a fixed contact terminal having a common contact terminal and a switching contact terminal provided in the storage portion, and the switching contact. A pressing switch device comprising: a movable contact that contacts and separates from a terminal; and a snap action mechanism that drives the movable contact when the operation member is pressed to a predetermined position. The snap action mechanism includes a conductor plate in which one end side is supported by the common contact terminal at a first rotation fulcrum and the movable contact is provided, and the other end side of the conductor plate. A drive plate whose one end is engaged at the second rotation fulcrum, and a third rotation fulcrum located on the first rotation fulcrum side at the other end of the drive plate. A compression spring comprising a leaf spring which is stopped and is engaged with a fixed base integrated with the housing at a fourth rotation fulcrum located on the second rotation fulcrum side at the other end side. The compression spring and the drive plate are formed in an annular shape, the common contact terminal is passed through the opening, and the compression spring extends in a direction intersecting the moving direction of the operating member. And a pair of short sides provided at the ends of the pair of long sides, and a part of the long side near the pair of short sides is on the operation member side. It is bent and locked to the drive plate or the fixed base . In this case, since a part of the long side part near the short side part is bent to the operation member side and locked to the drive plate or the fixed base, the spring length of the compression spring can be designed to be longer, Furthermore, it is possible to extend the life of the compression spring by distributing the load applied to the compression spring.

  Furthermore, in the pressing switch device, it is preferable that the movable contact is a sliding contact that slides on a surface of the switching contact terminal. In this case, since the movable contact is composed of a sliding contact, dust or the like on the surface of the switching contact terminal can be removed when the movable contact is driven by the snap action mechanism. Contact stability can be ensured.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the press-type switch apparatus provided with the snap action mechanism which can lengthen an apparatus, aiming at lifetime improvement of a compression spring.

It is a perspective view which shows the external appearance of the press type switch apparatus which concerns on one embodiment of this invention. It is a disassembled perspective view of the press type switch device concerning the above-mentioned embodiment. It is a perspective view of the fixed base which the press type switch device concerning the above-mentioned embodiment has. It is a disassembled perspective view of the snap action mechanism which the press type switch device concerning the above-mentioned embodiment has. It is a perspective view at the time of attaching a snap action mechanism to the fixed base which the press type switch device concerning the above-mentioned embodiment has. It is a top view at the time of attaching a snap action mechanism to the fixed base which the press type switch device concerning the above-mentioned embodiment has. It is explanatory drawing of the force which acts with respect to the rotation fulcrum of each structural member of the snap action mechanism which the press type switch apparatus which concerns on the said embodiment has, and each structural member. It is explanatory drawing of the state which removed the case of the press type switch apparatus which concerns on the said embodiment. It is a sectional side view of the press type switch device concerning the above-mentioned embodiment. It is explanatory drawing of the snap action mechanism of the state immediately before reversing in the press type switch apparatus which concerns on the said embodiment. It is explanatory drawing of the snap action mechanism of the state immediately after inversion in the press type switch apparatus which concerns on the said embodiment. In the push-type switch device according to the embodiment, it is an explanatory view of the snap action mechanism in a state where the operation member is pressed to the lowest position. In the push-type switch device according to the embodiment, it is an explanatory diagram of a snap action mechanism in a state immediately before reversing at the time of return. In the push-type switch device according to the above-described embodiment, it is an explanatory view of a snap action mechanism in a state immediately after being reversed upon return.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective view showing an external appearance of a press-type switch device (hereinafter simply referred to as “switch device”) 1 according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the switch device 1 according to the present embodiment. In the following, for convenience of explanation, the upper side shown in FIGS. 1 and 2 is referred to as “upper side of the switch device 1” or simply “upper side”, and the lower side shown in FIGS. 1 "lower side" or simply "lower side".

  As shown in FIG. 1, the switch device 1 according to the present embodiment causes a part of an operation member 4 to be described later to protrude from a part of the top surface part of the box-shaped housing 2, and an operator or the like at the protruding part. It is comprised so that pressing operation may be received. A cover (not shown) for preventing entry of foreign matter such as dust and water into the housing 2 can be attached to a part of the operation member 4 protruding from the housing 2.

  As shown in FIG. 2, the switch device 1 includes a housing 2 formed by molding an insulating resin material, for example. The housing 2 includes a case 21 having a box shape opened to the lower side and a fixed base 22 having a shape corresponding to the opening of the case 21 and constituting the inner bottom surface of the switch device 1. By combining the case 21 and the fixed base 22, a housing portion for housing the constituent members of the switch device 1 is formed inside the housing 2.

  On the upper surface of the case 21, an opening 211 is formed through which an upper end portion of a shaft portion 42 of the operation member 4 described later can pass. The fixed base 22 has a rectangular shape in a top view, and a protruding surface 221 having a shape corresponding to the opening of the case 21 is provided on the upper surface. The case 21 is appropriately positioned by accommodating the protruding surface 221 with an opening. Further, the case 21 is integrated with the fixed base 22 by being press-fitted while crushing the crush rib 221 a formed on the side surface of the protruding surface 221. A projecting piece 222 is provided at one end of the projecting surface 221 (the right side end shown in FIG. 2) so as to project upward.

  A part of the fixed contact terminal 3 fixed to the fixed base 22 is disposed in the storage portion formed in the housing 2, and a part of the operation member 4 that receives a pressing operation by an operator or the like and the operation member A snap action mechanism 5 that operates in response to a pressing operation on 4 is accommodated. As will be described in detail later, the snap action mechanism 5 is attached to a conductor plate 7 having a movable contact 6, a drive plate 8 whose one end is pressed by the operation member 4, and the conductor plate 7 and the drive plate 8. It is comprised with the compression spring 9 which consists of a leaf | plate spring which integrates these.

  The fixed contact terminal 3 includes a metal common contact terminal 31 and a metal switching contact terminal 32 that are insert-molded on the fixed base 22. The common contact terminal 31 is bent to the opposite side of the switching contact terminal 32 from the common contact portion 311 provided to extend in the vertical direction above the fixed base 22 and the lower end portion of the common contact portion 311. And a terminal portion 312 extending downward from the end portion. A protrusion 313 that slightly protrudes toward the switching contact terminal 32 is provided near the center of the common contact 311. On the other hand, the switching contact terminal 32 is bent to the opposite side of the common contact terminal 31 from the switching contact portion 321 projecting upward from the fixed base 22, and extends downward from the end portion thereof. Terminal portion 322.

  The operation member 4 is formed, for example, by molding an insulating resin material, and has a base portion 41 having a generally rectangular shape in a top view, and a columnar shaft portion 42 erected on the upper surface of the base portion 41. It has a pair of side surface parts 43 provided depending on a part of the outer edge part of the longitudinal direction of the base 41, and the press piece 44 provided protruding from the lower surface of the base 41 (About the press piece 44 in FIG. Not shown, see FIG. 8A).

  In the base 41, a rectangular opening 411 is formed on the left side portion of the shaft portion 42. The opening 411 is configured such that the upper end portion of the common contact terminal 31 (common contact portion 311) can pass when the operation member 4 moves downward. The shaft portion 42 is disposed so that the upper end portion thereof protrudes from the opening portion 211 of the case 21 and receives a pressing operation from an operator or the like. The pair of side surface portions 43 are arranged to face each other and are guided by guide grooves formed on the inner wall surface of the case 21 on the outer wall surface thereof. The pressing piece 44 is provided on the lower surface of the base 41 on the outer side (left side shown in FIG. 2) of the opening 411 (see FIG. 8A).

  Here, the structure of the fixed base 22 and the snap action mechanism 5 which the switch apparatus 1 which concerns on this Embodiment has is demonstrated. FIG. 3 is a perspective view of the fixed base 22 included in the switch device 1 according to the present embodiment. FIG. 4 is an exploded perspective view of the snap action mechanism 5 included in the switch device 1 according to the present embodiment. 3 shows the fixed base 22 in a state where the fixed contact terminals 3 are integrated.

  As shown in FIG. 3, in the fixed base 22, the fixed contact terminal 3 is embedded with a part thereof protruding from the protruding surface 221 along the long side direction of the fixed base 22. The common contact terminal 31 is arranged so that the common contact portion 311 extends from the upper surface of the protruding surface 221, while the terminal portion 312 extends from the lower surface of the fixed base 22. Similarly, the switching contact terminal 32 is arranged so that the switching contact portion 321 extends from the upper surface of the protruding surface 221, while the terminal portion 322 extends from the lower surface of the fixed base 22. That is, the common contact terminal 31 (common contact portion 311) and the switching contact terminal 32 (switching contact portion 321) are provided in a storage portion formed by the housing 2 while standing on the fixed base 22. . The common contact portion 311 and the switching contact portion 321 are arranged on the same straight line at a central portion in the short direction of the fixed base 22 and separated by a certain distance.

  The switching contact portion 321 is disposed inside the protruding piece 222 (on the common contact terminal 31 side). The switching contact portion 321 is integrated with a plate-like portion 222 a constituting the protruding piece 222 in a state where it is insert-molded on the fixed base 22. An inclined portion 321 a is provided at the upper end portion of the switching contact portion 321. A step portion 222b is provided at one end of the upper end surface of the plate-like portion 222a (the right side end portion shown in FIG. 3), and the height dimension is lower than that of the upper end surface. On the other hand, a protruding piece 222c is provided at the other end of the plate-like portion 222a (the left side end shown in FIG. 3) so as to protrude upward.

  As shown in FIG. 4, the snap action mechanism 5 includes a conductive plate 7 and a drive plate 8 formed by performing blanking and bending on a conductive metal plate, and blanking and bending on an elastic metal plate. It is configured by combining with a compression spring 9 formed by processing. The drive plate 8 does not necessarily have to be made of a conductive metal plate material. Hereinafter, the configuration of the conductor plate 7, the drive plate 8, and the compression spring 9 will be described.

  The conductor plate 7 includes a base portion 701 extending in a direction crossing the moving direction of the operation member 4 and a pair of extending portions 702 and 703 extending upward from both ends of the base portion 701, as viewed from the side. And generally U-shaped (see FIG. 7). The conductor plate 7 is formed with a pair of long holes 704 and 705 arranged along the extending direction of the base 701. The long hole 704 is formed from the vicinity of the center of the base portion 701 to the vicinity of the center of the extending portion 702. On the other hand, the long hole 705 is formed from the vicinity of the center of the base portion 701 to the vicinity of the center of the extending portion 703.

  A protruding portion 706 is provided on the inner surface of the extending portion 702 and above the elongated hole 704. Further, a concave portion 707 is provided on the outer surface of the extending portion 702 corresponding to the projecting portion 706 (the concave portion 707 is not shown in FIG. 4, refer to FIG. 9). A tongue piece 708 is provided at the center of the upper end of the extension 703. The tongue piece 708 is bent at the tip, and slightly extends outward. The tongue piece 708 plays a role of engaging with a recess 805 of the drive plate 8 described later.

  The movable contact 6 is attached to the base 701. The movable contact 6 has movable contacts 61 and 62. For example, the movable contact 61 is fixed to the base 701 by inserting one end portion having the bent portion 611 into the long hole 704 and joining the upper surface of the base 701 by welding or the like. Similarly, the movable contact 62 is fixed to the base portion 701 by inserting one end portion having the bent portion 621 into the elongated hole 705 and welding to the upper surface of the base portion 701. The method for fixing the movable contact 6 to the conductor plate 7 can be changed as appropriate.

  The movable contacts 61 and 62 have a shape in which the other end portion extends downward and is bent toward the lower surface side of the base portion 701 provided with the extending portion 703. At the other end portions of the movable contacts 61 and 62, clamping portions 612 and 622 are provided so as to face each other with a certain distance therebetween. These clamping parts 612 and 622 are comprised so that the switching contact part 321 of the switching contact terminal 32 can be clamped. And according to the movement of the conductor board 7 accompanying the press operation with respect to the operation member 4, it is comprised so that the surface of the switching contact part 321 can slide. That is, the movable contact 6 constitutes a sliding contact that slides on the switching contact portion 321. Since the movable contact 6 is configured as a sliding contact in this way, dust or the like on the surface of the switching contact terminal 32 can be removed when the movable contact 6 is driven by the snap action mechanism 5, so that the movable contact 6 and the switching contact terminal 32 can be removed. It is possible to improve the reliability of the conductive connection between the fixed contact terminals 3 (between the common contact terminal 31 and the switching contact terminal 32).

  The drive plate 8 is subjected to blank processing on a long metal plate material and formed into an annular shape (more specifically, a rectangular frame shape), and then subjected to bending processing. The drive plate 8 includes a pair of long side portions 801 extending in parallel to the direction intersecting the moving direction of the operation member 4 and a pair of short side portions arranged to connect both ends of the long side portion 801. 802 (802a, 802b). In the vicinity of one end portion of the long side portion 801 (right side end portion shown in FIG. 4), an extending portion 803 that extends (is orthogonal) to the extending direction of the long side portion 801 and extends upward is provided. It has been.

  In the center of the long side portion 801 and the short side portion 802, an opening 804 having a generally rectangular shape as viewed from above is formed. The opening 804 is configured to have a dimension that allows the conductor plate 7 to pass in a state where the snap action mechanism 5 is assembled. The short side portion 802a disposed on one end portion (the right side end portion shown in FIG. 4) of the long side portion 801 has a tip end portion (a right side end portion shown in FIG. 4) parallel to the long side portion 801. It extends slightly below the flat surface. A concave portion 805 is formed in the short side portion 802 a so as to be continuous with the opening 804. The recess 805 plays a role of engaging with the tongue piece 708 of the conductor plate 7.

  The compression spring 9 is subjected to a blanking process on a long metal plate material having elasticity and formed into an annular shape (more specifically, a rectangular frame shape), and then subjected to a bending process. The compression spring 9 includes a pair of long side portions 901 extending in a direction crossing the moving direction of the operation member 4 and a pair of short side portions 902 (902a) provided to connect both ends of the long side portion 901. 902b). A part of the long side portion 901 in the vicinity of the short side portion 902 intersects (orthogonal) with the extending direction of the long side portion 801 and is bent upward (on the operation member 4 side). These long side portions 901 and short side portions 902 are provided, and the compression spring 9 is generally U-shaped in a side view (see FIG. 7).

  As will be described in detail later, the compression spring 9 is locked to the drive plate 8 or a part of the protruding piece 222 of the fixed base 22 at a part of the portion bent toward the operation member 4 side. In the snap action mechanism 5 according to the present embodiment, a part of the long side portion 901 in the vicinity of the short side portions 902a and 902b is bent to the operation member 4 side, and the drive plate 8 or the fixed base 22 is Since the spring length of the compression spring 9 can be designed to be long because it is locked to a part of the protruding piece 222, the life of the compression spring 9 can be extended by dispersing the load applied to the compression spring 9. .

  At the center of the upper end portion of the short side portion 902a arranged at one end portion (the right side end portion shown in FIG. 4) of the long side portion 901, a protruding portion 903 is provided so as to protrude upward. The protruding portion 903 is disposed on the same plane as the short side portion 902a. Further, a pair of shoulder portions 904 (904a, 904b) are provided on the sides of the protruding portion 903. These shoulder portions 904a and 904b are configured to be able to come into contact with a regulating piece 214 of the case 21, which will be described later, when the snap action mechanism 5 is housed in the housing 2.

  On the other hand, a protruding plate portion 905 is provided at the center of the upper end portion of the short side portion 902b arranged at the other end portion (the left side end portion shown in FIG. 4) of the long side portion 901. The protruding plate portion 905 is arranged in parallel with the extending direction of the long side portion 901, and the tip end portion extends outward (to the left side shown in FIG. 4). The protruding plate portion 905 plays a role of locking the short side portion 802b of the drive plate 8 in a state where the snap action mechanism 5 is assembled.

  The compression spring 9 is formed with a generally rectangular opening 906 when viewed from above. The opening 906 is configured to have a dimension that allows the conductor plate 7 to pass in a state where the snap action mechanism 5 is assembled. A concave portion 907 is formed in the short side portion 902a continuously to the opening portion 906. The recess 907 has a shape that opens downward. The concave portion 907 is formed to have a size capable of accommodating the plate-like portion 222a (more specifically, the step portion 222b) included in the protruding piece 222 of the fixed base 22.

  5 and 6 are a perspective view and a top view, respectively, when the snap action mechanism 5 is attached to the fixed base 22 of the switch device 1 according to the present embodiment. 5 and 6 show the snap action mechanism 5 in an initial state where no pressing operation is performed on the switch device 1 according to the present embodiment.

  The snap action mechanism 5 is supported by the fixed contact terminal 3 integrated with the fixed base 22 and the fixed base 22 in a state where the conductor plate 7, the drive plate 8 and the compression spring 9 are combined. It is arranged at the position (initial position) in the initial state shown in FIG. As shown in FIG. 5, the case 21 and the operation member 4 are attached to the fixed base 22 on which the snap action mechanism 5 is arranged. The snap action mechanism 5 comes into contact with the case 21 and a part of the operation member 4 and is stably held in the state where the initial position is maintained in the housing portion of the housing 2.

  The conductor plate 7 accommodates the protruding portion 313 of the fixed contact terminal 3 (common contact terminal 31) in the concave portion 707 of the extending portion 702 provided on one end side (left end side shown in FIG. 5) (see FIG. 5). (Not shown, see FIG. 9). On the other hand, the conductor plate 7 is engaged with a recess 805 formed in the short side portion 802a of the drive plate 8 at a tongue piece portion 708 provided on the other end side (right end side shown in FIG. 5). The compression spring 9 locks the short side portion 802b of the drive plate 8 with a protruding plate portion 905 provided on one end side (left end side shown in FIG. 5). On the other hand, the compression spring 9 accommodates the plate-like portion 222a (stepped portion 222b) of the projecting piece 222 in the concave portion 907 of the short side portion 902a provided on the other end side (the right end side shown in FIG. 5). That is, the concave portion 907 of the compression spring 9 is locked to the plate-like portion 222 a (stepped portion 222 b) of the protruding piece 222. As described above, the drive plate 8 and the compression spring 9 are formed in an annular shape, and the common contact terminal 31 constituting the fixed contact terminal 3 is disposed through the openings 804 and 906.

  In the snap action mechanism 5, the conductor plate 7 and the compression spring 9 are connected via a drive plate 8. In such a connected state, the snap action mechanism 5 is supported by the common contact terminal 31 by the recess 707 of the conductor plate 7, and supported by the protruding piece 222 by the recess 907 of the compression spring 9. In this case, the movable contact 6 attached to the conductor plate 7 is in a state in which a part of the plate-like portion 222a in the vicinity of the switching contact terminal 32 (switching contact portion 321) is sandwiched by the sandwiching portions 612 and 622. . For this reason, the common contact terminal 31 and the switching contact terminal 32 are in a non-conductive state.

  In the compression spring 9, the movement of the other end side (the right end side shown in FIG. 5) is restricted by the inner wall surface of the case 21, etc., while the one end side (the left end side shown in FIG. 5) is compressed. 8 is held. For this reason, the compression spring 9 is in a state where a force for opening the short sides 902a and 902b (hereinafter, referred to as “elastic return force” as appropriate) is applied in the initial state. The snap action mechanism 5 uses the elastic return force of the compression spring 9 to reverse when the operation member 4 is pressed to a certain position, and can return to the initial state when the pressing operation is released. It is configured.

  A short side portion 902b provided on one end side (left end side shown in FIG. 5) of the compression spring 9 is disposed outside the common contact terminal 31 (left side shown in FIG. 5). On the other hand, the short side portion 902a provided on the other end side (the right end side shown in FIG. 5) of the compression spring 9 is arranged outside the switching contact terminal 32 (the switching contact portion 321) (right side shown in FIG. 5). Has been. For this reason, since the spring length of the compression spring 9 can be designed to be long even in a limited space within the housing portion of the housing 2, the load applied to the compression spring 9 can be distributed to extend the life. .

  As shown in FIG. 6, the conductor plate 7 corresponds to the opening 804 of the drive plate 8 and the opening 906 of the compression spring 9 and is disposed at a position where it can pass through them. For this reason, even when the drive plate 8 and the compression spring 9 are rotated along with the pressing operation on the operation member 4, the conductor plate 7 is prevented from coming into contact with the drive plate 8 and the compression spring 9. 9 and the drive plate 8 can be smoothly rotated. Further, the long hole 705 of the conductor plate 7 is disposed at a position corresponding to the upper end portion of the plate-like portion 222 a of the protruding piece 222. For this reason, the rotation operation of the conductor plate 7 is not limited by the contact with the upper end portion of the protruding piece 222.

  Here, the rotation fulcrum of each component of the snap action mechanism 5 included in the switch device 1 according to the present embodiment and the force acting on each component will be described. FIG. 7 is an explanatory diagram of the rotation fulcrum of each component of the snap action mechanism 5 included in the switch device 1 according to the present embodiment and the force acting on each component. 7 shows the snap action mechanism 5 in the initial state, and the case 21 and the operation member 4 are omitted for convenience of explanation.

  As shown in FIG. 7, the conductor plate 7 accommodates the protruding portion 313 of the common contact terminal 31 in the recessed portion 707 provided in the extending portion 702, and the apex of the protruding portion 313 is set as the first rotation fulcrum. A is configured to be rotatable. On the other hand, the drive plate 8 is engaged with the tongue piece 708 of the conductor plate 7 by the recess 805 of the short side portion 802a, and a part of the tongue piece 708 in contact with the recess 805 is used as the second rotation fulcrum. B is configured to be rotatable.

  The compression spring 9 is engaged with the short side portion 802b of the drive plate 8 by a protruding plate portion 905 provided on the short side portion 902b, and a part of the short side portion 802b that contacts the protruding plate portion 905 is a first part. It is comprised so that rotation is possible as 3 rotation fulcrum C. The third pivot fulcrum C also functions as a pivot fulcrum for the drive plate 8 when the snap action mechanism 5 is reversed. On the other hand, the compression spring 9 accommodates the stepped portion 222b of the protruding piece 222 provided on the fixed base 22 by the recessed portion 907 of the short side portion 902a, and a part of the stepped portion 222b contacting the recessed portion 907 is the first. It is comprised so that rotation is possible as 4 rotation fulcrum D.

  The first rotation fulcrum A is formed on a part of the end surface of the common contact terminal 31 on the switching contact terminal 32 side. Since the first rotation fulcrum A, which is the rotation fulcrum of the conductor plate 7, is formed on a part of the end surface of the common contact terminal 31 as described above, the common contact terminal 31, the conductor plate 7, It is possible to rotate the conductor plate 7 while enabling the conduction. The fourth rotation fulcrum D is arranged on the opposite side of the first rotation fulcrum A with the switching contact terminal 32 interposed therebetween. Since the fourth rotation fulcrum D constituting the rotation fulcrum of the compression spring 9 is arranged at the position opposite to the first rotation fulcrum A with the switching contact terminal 32 as a reference, the compression spring 9 Therefore, the load applied to the compression spring 9 can be distributed.

  In the initial state, the first rotation fulcrum A is disposed below the second rotation fulcrum B and the third rotation fulcrum C, and is disposed above the fourth rotation fulcrum D. ing. That is, the first rotation fulcrum A is disposed below the straight line connecting the second rotation fulcrum B and the third rotation fulcrum C. The second rotation fulcrum B is arranged on the uppermost side among the four rotation fulcrums. Further, the third rotation fulcrum C is disposed below the second rotation fulcrum B, and is disposed above the first rotation fulcrum A and the fourth rotation fulcrum D. . Further, the fourth rotation fulcrum D is disposed on the lowermost side among the four rotation fulcrums.

In this way, when the first to fourth rotation fulcrums A to D are arranged, the compression spring 9 is given a force (elastic return force) for opening the short side portions 902a and 902b. For this reason, the force F ₁ acting between the third pivot fulcrum C and the fourth pivot fulcrum D (that is, the force acting on the compression spring 9) is directed toward the upper left side shown in FIG. Yes. The force F ₂ acting between the second pivot fulcrum B and the third pivot fulcrum C (that is, the force acting on the drive plate 8) is slightly directed to the lower left side. Here, when the angle between the force F ₁ and the force F ₂ is θ ₁ , the force F ₂ is obtained by the following (Equation 1).
F ₂ = F ₁ cos θ ₁ (Formula 1)

The force acting between the first pivot point A and the second pivot point B and F _d, the angle between the direction of the direction and the force F _d of the force F ₂ as a theta ₂ Then, the force F ₃ acting on the conductor plate 7 is obtained by the following (Equation 2). That is, when the angle θ ₂ is at least larger than 0 °, the force F ₃ is in a state of facing upward.
F ₃ = F ₂ sin θ ₂ (Formula 2)

Further, when the force acting on the third pivot point C and F _4, the force F ₄ is determined by the following equation (3). That is, when the angle θ ₁ is at least larger than 0 °, the force F ₄ is in a state of facing upward. At this time, if the angle between the direction of the force F _{5 and} the direction of the force F ₄ is θ3, the force F ₅ for moving the third rotation fulcrum C upward is as follows: It is obtained by equation 4).
F ₄ = F ₁ sin θ ₁ (Formula 3)
F ₅ = (F ₁ sin θ ₁ ) × cos θ ₃ (Formula 4)

Here, in the snap action mechanism 5, the force F ₁ is always placed on the upper side than the force F _2. For this reason, the angle θ ₁ between the force F ₁ and the force F ₂ is always larger than 0 °. When the angle θ1 is larger than 0 °, the force F ₅ that moves upward from (Expression 3) and (Expression 4) acts on the third rotation fulcrum C. As a result, the operation member 4 is always urged upward by the snap action mechanism 5.

  Here, the positional relationship between the snap action mechanism 5 included in the switch device 1 according to the present embodiment and the surrounding constituent members will be described with reference to FIGS. FIG. 8 is an explanatory diagram of the switch device 1 according to the present embodiment with the case 21 removed. 8A shows the side surface of the switch device 1, and FIG. 8B shows the switch device 1 from the protruding piece 222 side of the fixed base 22. FIG. 9 is a side sectional view of the switch device 1 according to the present embodiment. FIG. 9 shows a cross section passing through the center line in the moving direction (vertical direction) of the operation member 4. 8 and 9 show the switch device 1 in the initial state.

As shown in FIG. 8, the operation member 4 is disposed above the snap action mechanism 5. The operation member 4 is disposed in a state where the pressing piece 44 provided on the lower surface of the base 41 is placed on the protruding plate portion 905 of the compression spring 9 (see FIG. 8A). In this case, the operation member 4 is urged upward by an upward force (the force F ₅ described above) acting on the snap action mechanism 5 (more specifically, the third rotation fulcrum C). It is in a state. The upward movement of the operation member 4 is restricted by the lower surface of the top surface portion of the case 21. For this reason, the operation member 4 is arrange | positioned in the fixed position by the initial state.

  As shown in FIG. 8B, the side surface portion 43 of the operation member 4 extends in the vertical direction at a position outside the shaft portion 42. In a state where the switch device 1 is assembled, the side surfaces 43 are accommodated in guide grooves (not shown) formed on the inner wall surface of the case 21. These guide grooves extend in the vertical direction at the center of the inner wall surface of the case 21. When moving up and down in accordance with the pressing operation, the operation member 4 is configured to be able to move up and down at a certain position while being guided along the side surface portion 43 by these guide grooves.

  As shown in FIG. 9, a support piece 212 supported by the common contact terminal 31 is provided on the lower surface of the top surface portion of the case 21 so as to protrude downward. The support piece 212 is provided so as to surround the upper end portion of the common contact terminal 31 and supports the common contact terminal 31. Even when a pressing force is applied to the common contact terminal 31 via the snap action mechanism 5 in accordance with the pressing operation on the operation member 4, the common contact terminal 31 is supported by the support piece 212. The situation where the position shifts can be suppressed.

  Further, on the lower surface of the top surface portion of the case 21, a restriction piece 213 for restricting the upward movement of the drive plate 8 and a pair of restriction pieces 214 for restricting the upward and rightward movements of the compression spring 9. And projecting downward. The restricting piece 213 is disposed at a position where it comes into contact with the upper end portion of the extending portion 803 of the drive plate 8 in a state where the snap action mechanism 5 is accommodated in the case 21. On the other hand, the restricting piece 214 is disposed at a position where it comes into contact with the upper end portions of the shoulder portions 904a and 904b of the short side portion 902a of the compression spring 9 in a state where the snap action mechanism 5 is accommodated in the case 21. When the regulating piece 214 abuts against the shoulder portions 904a and 904b of the compression spring 9, for example, as shown in FIG. 12, even when the snap action mechanism 5 performs a snap action operation, the concave portion 907 of the short side portion 902a is The state in which the plate-like portion 222a (stepped portion 222b) of the protruding piece 222 is accommodated is maintained.

  Hereinafter, the snap action operation of the snap action mechanism 5 included in the switch device 1 according to the present embodiment will be described with reference to FIGS. In the snap action mechanism 5 included in the switch device 1 according to the present embodiment, the plurality of rotation fulcrums (first to fourth rotation fulcrums A to D) described above in accordance with the pressing operation on the operation member 4. Each component performs a snap action while rotating. In particular, when the operation member 4 is pushed beyond a certain position, the snap action mechanism 5 is reversed to switch between the fixed contact terminals 3 (between the common contact terminal 31 and the switching contact terminal 32) to a conductive state.

  When the operating member 4 is pressed into the housing 2 from the initial state shown in FIG. 7, the protruding plate portion 905 of the compression spring 9 is pressed downward in the case 21 by the pressing piece 44. The position of the pressing piece 44 that contacts the protruding plate portion 905 constitutes the point of action of the pressing force from the operation member 4. The compression spring 9 rotates counterclockwise on the left side end with the fourth rotation fulcrum D as a rotation fulcrum. As the compression spring 9 rotates, in the snap action mechanism 5, the drive plate 8 rotates counterclockwise on the left side with the second rotation fulcrum B as a rotation fulcrum. It will be in the state shown in FIG. 10 shows the snap action mechanism 5 in a state immediately before reversal in the switch device 1 according to the present embodiment. In FIG. 10, the case 21 and the operation member 4 are omitted for convenience of explanation. The same applies to FIGS. 11 to 14 shown below.

As shown in FIG. 10, when the snap action mechanism 5 shifts to a state immediately before reversing, the first rotation fulcrum A connects the second rotation fulcrum B and the third rotation fulcrum C. It is arranged above the straight line. That is, the angle θ ₂ between the direction of the force F _{2 and} the direction of the force F _d becomes 0 ° or less, and the direction of the force F ₃ acting on the conductor plate 7 changes to a state facing downward. However, in the snap action mechanism 5, the sliding contact type movable contact 6 is fixed to the conductor plate 7, and the sandwiching portions 612 and 622 provided at the tips sandwich the plate-like portion 222 a of the protruding piece 222. doing. Force F _mu generated by the frictional resistance of the sandwiching portion 612 and 622 acts in the opposite direction of the force _{F 3.} In the snap action mechanism 5 shown in FIG. 10, the case where the magnitude of the force F _μ is equal to the magnitude of the force F ₃ is shown. If the magnitude of such a force F _mu is equivalent to the magnitude of the force F _3, or when the magnitude of the force F ₃ is less than the magnitude of the force F _mu is the snap action mechanism 5 is inverted There is no.

When the operation member 4 is slightly pressed into the housing 2 from the state shown in FIG. 10, the angle θ ₂ between the direction of the force F _{2 and} the direction of the force F _d further increases. Accordingly, when the magnitude of the force F ₃ acting on the conductor plate 7 exceeds the magnitude of the force F _μ generated by the frictional resistance of the sandwiching portions 612 and 622, the snap action mechanism 5 is reversed. That is, in the snap action mechanism 5, the right side end of the conductor plate 7 rotates in a clockwise direction around the first rotation fulcrum A as a rotation fulcrum, and the state shown in FIG. 11 is obtained. FIG. 11 shows the snap action mechanism 5 in a state immediately after being reversed in the switch apparatus 1 according to the present embodiment.

  As shown in FIG. 11, when the conductor plate 7 is rotated, the movable contact 6 fixed to the conductor plate 7 is also rotated in the clockwise direction. As a result, in the movable contact 6, the sandwiching portions 612 and 622 slide from the plate-like portion 222 a of the protruding piece 222 and come into contact with the switching contact portion 321 of the switching contact terminal 32. As a result, the common contact terminal 31 and the switching contact terminal 32 are switched to the conductive state via the movable contact 6, and the switch device 1 is turned on. In this state where the snap action mechanism 5 is inverted, the conductor plate 7 has the lower end portion of the extending portion 703 defining the opening portion 705 in contact with the upper end portion of the protruding piece 222, and the right side end. The part is in a state where further rotation is restricted.

  When the operating member 4 is further pressed to the lowest position in the housing 2 from the state shown in FIG. 11, the compression spring 9 and the drive plate 8 have the fourth rotation fulcrum D and the second rotation fulcrum B, respectively. The left side end as a rotation fulcrum rotates to be in the state shown in FIG. FIG. 12 shows the snap action mechanism 5 in a state where the operation member 4 is pressed to the lowest position (full stroke state) in the switch device 1 according to the present embodiment. Also in FIG. 12, the snap action mechanism 5 is in an inverted state, and the switch device 1 is maintained in the ON state.

  In the compression spring 9 constituting the snap action mechanism 5, as described above, an elastic return force that tries to open the short side portions 902 a and 902 b acts. For this reason, as shown in FIG. 12, when the pressing operation is released from the state in which the operating member 4 is pressed to the lowest position in the housing 2, the snap action mechanism 5 causes the elastic return of the compression spring 9. It tries to return to the initial state shown in FIG. Hereinafter, the operation of the snap action mechanism 5 when returning to the initial state will be described.

Even in a full-stroke state shown in FIG. 12, the angle θ1 between the force F ₁ and force F ₂ is greater than 0 °. Therefore, a force F ₅ that moves upward is applied to the third rotation fulcrum C. For this reason, when the pressing operation on the operating member 4 is released from the state shown in FIG. 12, the left end portion side of the compression spring 9 is moved in the fourth rotation by the elastic return force of the compression spring 9 in the case 21. It rotates in the clockwise direction using the moving fulcrum D as a rotation fulcrum. As the compression spring 9 rotates, in the snap action mechanism 5, the drive plate 8 rotates the left side end portion clockwise with the second rotation fulcrum B as a rotation fulcrum, as shown in FIG. It will be in the state shown. FIG. 13 shows the snap action mechanism 5 in a state immediately before reversing at the time of return in the switch device 1 according to the present embodiment.

As shown in FIG. 13, when the snap action mechanism 5 shifts to a state immediately before reversing at the time of return, the first rotation fulcrum A includes the second rotation fulcrum B and the third rotation fulcrum C. It is arranged below the straight line connecting That is, the angle θ ₂ between the force F ₂ and the force F _d becomes larger than 0 °, and the direction of the force F ₃ acting on the conductor plate 7 changes to a state of facing upward. However, the snap action mechanism 5, the force F _mu generated by the frictional resistance of the clamping portions 612 and 622 of the movable contact 6, which acts in the opposite direction of the force F ₃ as described above. In the snap action mechanism 5 shown in FIG. 13, the case where the magnitude of the force F _μ is equal to the magnitude of the force F ₃ is shown. If the magnitude of such a force F _mu is equivalent to the magnitude of the force F _3, or when the magnitude of the force F ₃ is less than the magnitude of the force F _mu is the snap action mechanism 5 is inverted There is no.

When the operation member 4 is pushed back slightly upward from the state shown in FIG. 13, the angle θ ₂ between the direction of the force F _{2 and} the direction of the force F _d further increases. Accordingly, when the magnitude of the force F ₃ acting on the conductor plate 7 exceeds the magnitude of the force F _μ generated by the frictional resistance of the sandwiching portions 612 and 622, the snap action mechanism 5 is reversed. That is, in the snap action mechanism 5, the right side end of the conductor plate 7 rotates in a counterclockwise direction around the first rotation fulcrum A as a rotation fulcrum, resulting in the state shown in FIG. 14. FIG. 14 shows the snap action mechanism 5 in a state immediately after being reversed in the switch device 1 according to the present embodiment.

  As shown in FIG. 14, when the conductor plate 7 is rotated, the movable contact 6 fixed to the conductor plate 7 is also rotated in the counterclockwise direction. As a result, in the movable contact 6, the sandwiching portions 612 and 622 slide from the switching contact portion 321 and come into contact with the plate-like portion 222 a of the protruding piece 222. As a result, the common contact terminal 31 and the switching contact terminal 32 are switched to the non-conductive state, and the switch device 1 is turned off. Thereafter, in the snap action mechanism 5, the operation member 4 is further pushed back upward by the elastic return force of the compression spring 9 to return to the initial state shown in FIG. 7.

  As described above, the switch device 1 according to the present embodiment includes the snap action mechanism 5 that drives the movable contact 6 fixed to the conductor plate 7 when the operation member 4 is pressed to a predetermined position. The drive plate 8 and the compression spring 9 constituting the mechanism 5 are formed in an annular shape, and the common contact terminal 31 is passed through the opening 804 and the opening 906. Thereby, since the common contact terminal 31 can be arrange | positioned inside the compression spring 9 and the drive plate 8, it is not necessary to provide the installation area | region of the common contact terminal 31, and the switch apparatus 1 can be reduced in size. Further, since the common contact terminal 31 is disposed inside the compression spring 9, the compression spring 9 can be disposed while maximally utilizing the space in the storage portion, so that the spring length of the compression spring 9 can be secured, and the compression spring 9 It is possible to extend the life of the compression spring 9 by distributing the load applied to the compression spring 9. As a result, the switch device 1 can be reduced in size while extending the life of the compression spring 9.

  In particular, in the switch device 1 according to the present embodiment, the snap action mechanism 5 is a compression spring disposed on the opposite side of the second rotation fulcrum B and the fourth rotation fulcrum D across the common contact terminal 31. The projecting plate portion 905 of 9 receives the pressing force of the operation member 4. As a result, the second rotation fulcrum B constituting the rotation fulcrum of the drive plate 8 with respect to the common contact terminal 31 and the position opposite to the fourth rotation fulcrum D constituting the rotation fulcrum of the compression spring 9. Since the pressing force from the operation member 4 can be received, the length of the point of the pressing force from the operation member 4 and the second rotation fulcrum B or the fourth rotation fulcrum D can be secured. It is possible to lengthen the stroke of the pressing operation on the operation member 4.

  In addition, this invention is not limited to the said embodiment, It can implement by changing suitably. In the above-described embodiment, the size, shape, and the like illustrated in the accompanying drawings are not limited thereto, and can be appropriately changed within a range in which the effect of the present invention is exhibited. In addition, various modifications can be made without departing from the scope of the object of the present invention.

  For example, in the snap action mechanism 5 according to the above-described embodiment, a configuration has been described in which the pressing force accompanying the pressing operation is received by the protruding portion 905 of the compression spring 9 via the pressing piece 44 of the operating member 4. However, the configuration for receiving the pressing force in the snap action mechanism 5 is not limited to the compression spring 9, and is configured by a part of the drive plate 8 disposed on the outer side (left side) of the common contact terminal 31. It may be. Even in the case of such changes, the same effects as in the above embodiment can be obtained. Furthermore, it is good also as a structure which receives the pressing force accompanying pressing operation in each of the compression spring 9 arrange | positioned on the outer side of the common contact terminal 31, and the drive plate 8. FIG.

  Moreover, in the said embodiment, although the movable contact 6 demonstrated the sliding contact type contact structure which slides on the surface of the switching contact terminal 32 (switching contact part 321), a contact structure is limited to this. Is not to be done. For example, the contact structure of the form which a movable contact contact | abuts with the switching contact part of a switching contact terminal may be sufficient. In this case, it is not necessary to consider the force due to the frictional resistance between the sandwiching portions 612 and 622 of the movable contact 6 and the plate-like portion 222a (or the switching contact portion 321).

1 Push-type switch device (switch device)
2 Housing 21 Case 211 Opening 22 Fixed base 221 Projecting surface 222 Projecting piece 3 Fixed contact terminal 31 Common contact terminal 311 Common contact unit 312 Terminal unit 32 Switching contact terminal 321 Switching contact unit 322 Terminal unit 4 Operating member 41 Base 42 Axle Part 43 Side part 44 Pressing piece 5 Snap action mechanism 6, 61, 62 Movable contact 612, 622 Holding part 7 Conductor plate 701 Base part 702, 703 Extension part 704, 705 Long hole 706 Projection part 707 Concave part 708 Tongue piece part 8 Drive Plate 801 Long side portion 802, 802a, 802b Short side portion 803 Extension portion 804 Opening portion 805 Recess 9 Compression spring 901 Long side portion 902, 902a, 902b Short side portion 903 Protruding portion 904, 904a, 904b Shoulder portion 905 Protruding plate Part 906 Opening part 907 Concave part A 1st rotation support Point B Second rotation fulcrum C Third rotation fulcrum D Fourth rotation fulcrum

Claims (7)

A housing having a storage portion; an operation member for receiving a pressing operation; a fixed contact terminal having a common contact terminal and a switching contact terminal provided in the storage portion; a movable contact contacting and separating from the switching contact terminal; A pressing switch device comprising a snap action mechanism that drives the movable contact when a member is pressed to a predetermined position;
The common contact terminal is erected in the storage portion, and the snap action mechanism is supported on the common contact terminal at one end by a first rotation fulcrum and has a conductive plate provided with the movable contact. A driving plate whose one end is engaged with the second rotation fulcrum on the other end of the conductor plate, and a third rotation located on the first rotation fulcrum on the other end of the driving plate. A compression comprising a leaf spring that is locked at one end side by a fulcrum and that is locked at a fixed base integrated with the housing at a fourth rotation fulcrum located at the second rotation fulcrum side at the other end side. The compression spring and the drive plate are formed in an annular shape, and the common contact terminal is passed through the opening ,
The snap action mechanism includes a part of the drive plate or the compression spring disposed on the opposite side of the second rotation fulcrum and the fourth rotation fulcrum across the common contact terminal. A press-type switch device characterized in that the fourth rotation fulcrum is disposed on the opposite side of the first rotation fulcrum by receiving a pressing force and sandwiching the switching contact terminal . 2. The pressing switch device according to claim 1 , wherein the snap action mechanism has the first rotation fulcrum formed on a part of an end surface of the common contact terminal on the switching contact terminal side. 3. The pressing switch device according to claim 1, wherein the snap action mechanism has the conductor plate disposed so as to be able to pass through openings of the compression spring and the drive plate. 4.   A housing having a storage portion; an operation member for receiving a pressing operation; a fixed contact terminal having a common contact terminal and a switching contact terminal provided in the storage portion; a movable contact contacting and separating from the switching contact terminal; A pressing switch device comprising a snap action mechanism that drives the movable contact when a member is pressed to a predetermined position;
  The common contact terminal is erected in the storage portion, and the snap action mechanism is supported on the common contact terminal at one end by a first rotation fulcrum and has a conductive plate provided with the movable contact. A driving plate whose one end is engaged with the second rotation fulcrum on the other end of the conductor plate, and a third rotation located on the first rotation fulcrum on the other end of the driving plate. A compression comprising a leaf spring that is locked at one end side by a fulcrum and that is locked at a fixed base integrated with the housing at a fourth rotation fulcrum located at the second rotation fulcrum side at the other end side. The compression spring and the drive plate are formed in an annular shape, and the common contact terminal is passed through the opening,
  The push-type switch device according to claim 1, wherein the snap action mechanism has the conductor plate disposed so as to be able to pass through the openings of the compression spring and the drive plate. The compression spring has a pair of long side portions extending in a direction intersecting the moving direction of the operation member, and a pair of short side portions provided at end portions of the pair of long side portions, any of claims 1 to 4, wherein a part of the long side portions of the pair of short side portions near is engaged with the driving plate or said fixed base with bent to the operating member side A push-type switch device according to claim 1.   A housing having a storage portion; an operation member for receiving a pressing operation; a fixed contact terminal having a common contact terminal and a switching contact terminal provided in the storage portion; a movable contact contacting and separating from the switching contact terminal; A pressing switch device comprising a snap action mechanism that drives the movable contact when a member is pressed to a predetermined position;
  The common contact terminal is erected in the storage portion, and the snap action mechanism is supported on the common contact terminal at one end by a first rotation fulcrum and has a conductive plate provided with the movable contact. A driving plate whose one end is engaged with the second rotation fulcrum on the other end of the conductor plate, and a third rotation located on the first rotation fulcrum on the other end of the driving plate. A compression comprising a leaf spring that is locked at one end side by a fulcrum and that is locked at a fixed base integrated with the housing at a fourth rotation fulcrum located at the second rotation fulcrum side at the other end side. The compression spring and the drive plate are formed in an annular shape, and the common contact terminal is passed through the opening,
  The compression spring has a pair of long side portions extending in a direction intersecting the moving direction of the operation member, and a pair of short side portions provided at end portions of the pair of long side portions, A part of the long side part in the vicinity of a pair of short side parts is bent to the operation member side and locked to the drive plate or the fixed base.   The press-type switch device according to any one of claims 1 to 6, wherein the movable contact is configured by a sliding contact that slides on a surface of the switching contact terminal.

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