JP4462217B2 - Push switch - Google Patents

Description

  The present invention relates to a push switch that pushes an operating body to open and close contacts.

2. Description of the Related Art Conventionally, as a power switch for a display device such as a television, a push switch that opens and closes a contact by pushing an operating body is known. For example, there is one disclosed in Patent Document 1. As shown in FIG. 6, this type of push switch includes a switch block E that opens and closes contacts (not shown) and an operation block F that operates the switch block E. The operation block F has a recess. A cam body and a heart-shaped cam A which is formed in a substantially heart shape by providing an outer peripheral portion having a step around the cam body, and a heart-shaped cam A which is formed in a substantially U shape and has one end as a rotation shaft and the other end being a heart. It has an alternate mechanism comprising a lock pin B that slides along the outer periphery of the cam A and a coil spring C that has one end pressing the side of the lock pin B. Then, the operating body D provided with the coil spring C closes the contact provided on the switch block F by pushing operation, and operates the alternate mechanism so that the other end of the lock pin B is in the recess of the heart-shaped cam A. It is locked by locking, and the contact is kept closed. If the operation body D is pushed in again, the lock is released and the contact is opened.
JP 2000-48675 A

  However, in the above conventional example, since the switch block E and the operation block F are arranged in series along the operation direction of the operation body D, the height of the push switch in the operation direction is increased, resulting in a thin electric circuit. There was a problem that it could not be applied to the power switch of the equipment.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a push switch capable of reducing the height in the operation direction of the switch.

In order to achieve the above object, the invention of claim 1 comprises a switch block for opening and closing a contact and an operation block for operating the switch block. The switch block is accommodated in a switch case and opens and closes the contact. And a switching part that closes the contact of the contact mechanism only while it is inserted and pushed through the inside and outside of the switch case, and the operation block penetrates into and out of the operation case. And a lock mechanism that is stored in the operation case and holds the operation body in a state where the operation body is pushed in. The lock mechanism is A push switch that switches the position of the operating body between a reference position when the operating body is not pushed in and a lock position where the operating body is held by the lock mechanism. Click and operations block is disposed side by side in the direction orthogonal to the operation direction of the operation body, the sub-operating tool is provided in conjunction with the operation member is pushed freely pressing the switch unit, the operation member is a push operation Each time, the position is switched between the reference position and the lock position via the operation position in which the sub-operation body pushes in further than the lock position and the sub-operation body pushes in the switching unit, and the operation body is operated from the reference position. An escape means is provided that prevents the auxiliary operating body from moving from the operating position to the locked position together with the operating body when pushed into the position .

請 Motomeko 2 of the invention is the invention of claim 1, relief means, a coil spring attached to the operating body between the auxiliary operating member and the operation member is biased in a direction toward the reference position from the operating position It is characterized by comprising.

The invention of claim 3 is the invention of claim 1, the release section, a leaf spring attached to the operation member is biased in a direction toward the reference position from the operating position between the auxiliary operating member and the operating member It is characterized by comprising.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the switch block is disposed such that the longitudinal direction of the switch case is parallel to the direction orthogonal to the operation direction of the operating body.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, the operation block and the switch block are housed in one housing.

According to the first aspect of the present invention, the switch block includes a switch block for opening and closing the contact and an operation block for operating the switch block. The switch block is housed in the switch case and opens and closes the contact, and the switch case. And a switching part that closes the contact of the contact mechanism only while it is inserted and pushed through the inside and outside of the operation block, and the operation block can be pushed through the inside and outside of the operation case. An operating body to be mounted and a lock mechanism that holds the operating body in a state where the operating body is housed in the operation case, and the locking mechanism is pushed in every time the pushing operation is performed. A push switch that switches the position of the operating body between a reference position in a non-operating state and a locked position where the operating body is held by a lock mechanism, the switch block and the operating block A sub-operator that is arranged side by side in the direction orthogonal to the operating direction of the operating body and that pushes the switching unit in a freely slidable manner in conjunction with the operating body is provided, so that the switch block and the operating block are in the operating direction of the operating body. Compared with the case where it arranges in series, the height of the push switch in an operation direction can be made low . Further, every time the operating body is pushed in, the position is switched between the reference position and the locking position via the operating position where the operating body is pushed further than the locked position and the sub operating body pushes the switching unit. In addition, when the operating body is pushed from the reference position to the operating position, a relief means is provided to prevent the sub operating body from moving from the operating position to the lock position together with the operating body. As the sub-operator does not move from the operating position to the locked position as it moves to the position, the switching unit can be prevented from being pushed in halfway, thus improving the contact reliability of the contacts. Can

According to the invention 請 Motomeko 2, relief means, because a coil spring attached to the operation member is biased in a direction toward the reference position from the operating position between the auxiliary operating member and the operation member, the operation When the body moves from the operating position to the locked position, the amount of bending of the coil spring is reduced and the sub-operating body does not move, preventing the switching unit from being pushed in halfway. Therefore, the contact reliability of the contact can be improved.

According to the invention of claim 3, the relief means, since a plate spring attached to the operation member is biased in a direction toward the reference position from the operating position between the auxiliary operating member and the operating body, the operating body When moving from the operating position to the locked position, the sub-operating body does not move only by reducing the amount of bending of the leaf spring, so that the switching part can be prevented from being pushed in halfway position, Therefore, the contact reliability of the contact can be improved. Moreover, the height in the operation direction of the sub operating body can be made lower than that of the coil spring.

According to the invention of claim 4 , since the switch block is disposed so that the longitudinal direction of the switch case is parallel to the direction orthogonal to the operation direction of the operating body, the short direction of the switch case is operated. The height in the operation direction of the push switch can be reduced as compared with the case where the push switch is disposed in parallel with the direction orthogonal to the body operation direction.

According to the invention of claim 5 , since the operation block and the switch block are housed in one housing, it is possible to improve the push switch mounting workability.

(Embodiment 1)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In the following description, the top, bottom, left, and right in FIG. As shown in FIG. 1, the present embodiment includes a switch block 1 that opens and closes contacts, and an operation block 2 that operates the switch block 1. The switch block 1 is housed in a switch case 11 and opens and closes contacts. And a switching unit 10 that closes the contact of the contact mechanism only while it is slidably inserted into and pushed through the inside and outside of the switch case 11. An operating body 20 that penetrates into and out of the case 22 and is slidably mounted, and a lock mechanism that is housed in the operating case 22 and holds the operating body 20 in a state where the operating body 20 is pushed in. It is a push switch, and the switch block 1 and the operation block 2 are arranged side by side in a direction (hereinafter, left-right direction) orthogonal to the operation direction (hereinafter, vertical direction) of the operating body 20. In conjunction with the operating body 20 pushes the switching portion 10 pushed freely auxiliary operating member 21 is provided. Since the contact mechanism of the switch block 1 is well known, detailed description is omitted here.

The switching unit 10 is provided on the upper surface of the switch case 11 so as to protrude from the inside. A terminal portion 12 for connecting to an external load is provided on the lower surface of the switch case 11 so as to protrude from the inside. The switching unit 10 is urged upward, and the contact is closed by being pushed into the inside by the sub operation body 21, and when the push by the sub operation body 21 is released, the contact is raised by the urging force and the contact is made. Established.

The operating body 20 includes a rod 24, a main button 23 attached to one end of the rod 24, and a body 26 attached to the other end of the rod 24. The main button 23 includes a flat plate portion 23a and a substantially rectangular button portion 23b protruding upward from the upper surface of the plate portion 23a. The body 26 is formed in a substantially box shape having an open rear surface, and is housed in the operation case 22 so as to be slidable in the vertical direction with the opening surface facing the inner rear surface of the operation case 22. Inside, a coil spring 25, a heart-shaped cam 4 and a lock pin 5 which will be described later are housed, and the coil spring 25, the heart-shaped cam 4 and the lock pin 5 constitute a lock mechanism.

The heart-shaped cam 4 is formed of metal or resin, and as shown in FIG. 2A, a cam main body 41 having a concave portion 41a and a substantially heart-shaped plate shape is formed around the cam main body 41. And an outer peripheral portion 42. The outer peripheral portion 42 is divided into a first region 42a to an eighth region 42h, and as shown in FIG. 2B, a step is provided between the regions, and the third region 42c is the highest, and the first region 42a and the 6th field 42f are the lowest. The heart-shaped cam 4 is attached to the inside of the lower end portion of the body 26.

The lock pin 5 is made of a linear metal, and, as shown in FIG. 2C, one piece 51, one opposed piece 52 that protrudes from both ends of the one piece 51 and faces each other, and the other opposed piece. Both opposing pieces 52 and 53 made of 53 are formed in a substantially U-shape. The opposing pieces 52 and 53 are formed with notches 54 and 55 having a substantially square cross section, respectively. The one opposing piece 52 is rotatably supported by a rib 27 formed to protrude forward from the back surface of the operation case 22, so that the other opposing piece 53 slides on the outer peripheral portion 42 of the heart-shaped cam 4. It becomes movable.

In the body 26, the upper end of the coil spring 25 is brought into contact with the inner upper surface of the body 26, and the lower end is brought into contact with the notch 54 of the one opposing piece 52 of the lock pin 5, so that the coil spring 25 is attached upward. It is energized. Further, the rib 27 is inserted into the coil spring 25 so that the coil spring 25 is positioned.

The sub operation body 21 is formed in a substantially rectangular parallelepiped shape, and a button insertion hole 21a for inserting the button portion 23b of the main button 23 and a rod insertion for inserting the rod 24 are formed on the upper surface and the lower surface of the left end portion. Each hole 21b is provided. The rod insertion hole 21b is formed to have a diameter such that the plate portion 23a of the main button 23 does not protrude below the sub operation body 21. In addition, a coil spring 30 is provided between the inner lower surface of the sub operation body 21 and the lower surface of the plate portion 23 a as an escape means so as to cover the rod 24 in an upward direction.

Hereinafter, the operation of the present embodiment will be described with reference to the drawings. When the operation body 20 is not pushed in, that is, the main button 23 is not pushed, the body 26 protrudes upward from the operation case 22 by the urging force of the coil spring 25 as shown in FIG. In the state where the body 21 is away from the switching unit 10, the contact of the switch block 1 is opened. The other facing piece 53 of the lock pin 5 is located in the first region 42 a of the outer peripheral portion 42 of the heart-shaped cam 4. The state in which the operating body 20 is not pushed is set as a reference position.

Next, when the main button 23 is pushed in, as shown in FIG. 3A, the body 26 slides downward, and the coil spring 30 pushes the sub operation body 21 to move it downward, so that the sub operation body 21. And the upper surface of the switching unit 10 are in contact with each other. Further, as the body 26 slides downward, the coil spring 25 is bent, and the other facing piece 53 of the lock pin 5 slides upward along the outer peripheral portion 24 of the heart-shaped cam 4. At this point, the contacts of the switch block 1 are still open.

When the main button 23 is further pushed in from this state, as shown in FIG. 3B, the sub-operating body 21 pushes the switching unit 10 until the lower surface of the sub-operating body 21 and the switch case 11 come into contact with each other. Block 1 contacts are closed. At this time, the other facing piece 53 of the lock pin 5 slides to the second region 42 b of the outer peripheral portion 42 of the heart-shaped cam 4. When the main button 23 is further pushed from this state, as shown in FIG. 3C, the lower surface of the body 26 comes into contact with the lower surface inside the operation case 22, and when the main button 23 is pushed further, the main button 23 is The coil spring 30 is moved downward while being bent. Further, the other opposing piece 53 of the lock pin 5 slides to the fourth region 42 d of the outer peripheral portion of the heart-shaped cam 4. A state where the operating body 20 is pushed in most is defined as an operating position.

When the pressing of the main button 23 is released while the operating body 20 is in the operating position, the operating body 20 slides upward by the biasing force of the coil spring 25 as shown in FIG. At this time, the other facing piece 53 of the lock pin 5 slides downward, moves to the fifth region 42e of the heart-shaped cam 4, and is held by the recess 41a, thereby holding the operating body 20. The state in which the operating body 20 is held is defined as a lock position. Here, when the operating body 20 moves from the operating position to the locked position, the coil spring 30 extends without changing the position of the lower end portion thereof, thereby releasing the force by which the sub operating body 21 is pushed upward. Therefore, the sub operating body 21 does not move, the switching unit 10 is maintained in a state where it is completely pushed into the sub operating body 21, and therefore the contact of the switch block 1 remains closed.

When the main button 23 is pushed in with the operating body 20 in the locked position, the operating body 20 moves to the operating position, and the other facing piece 53 of the lock pin 5 slides upward. It moves to the 6th field 42f of the perimeter part. Here, when the pushing of the main button 23 is released, the operating body 20 slides upward by the urging force of the coil spring 25. At this time, the other opposing piece 53 of the lock pin 5 slides downward and moves from the sixth region 42f to the first region 42a. Therefore, since the operating body 20 returns to the reference position, the pushing of the switching unit 10 by the sub operating body 21 is also released, and the contact of the switch block 1 is opened.

As described above, since the switch block 1 and the operation block 2 are arranged side by side in the left-right direction, the height in the vertical direction is made lower than when the switch block 1 and the operation block 2 are arranged in series in the vertical direction. Therefore, it can be applied to a power switch of a thin display device or the like. In addition, since the coil spring 30 is provided as an escape means between the inner lower surface of the sub operation body 21 and the lower surface of the plate portion 23a, the sub-coil spring 30 moves the sub spring when the operation body 20 moves from the operation position to the lock position. Since the force that pushes the operating body 21 upward can be released, the sub-operating body 21 does not move in the direction opposite to the pushing direction, and the switching unit 10 is prevented from being pushed in a halfway position. Therefore, the contact reliability of the contacts of the switch block 1 can be improved.

By the way, as shown in FIG. 4A, a leaf spring 31 may be used instead of the coil spring 30 as the escape means. The leaf spring 31 is formed in a substantially rectangular shape, one end of which is fixed to the inner lower surface of the sub operating body 21, and the rod 24 is inserted into an insertion hole 31a (see FIG. 4B) provided in the other end. Then, it is biased upward and attached. By comprising in this way, the contact reliability of the switch block 1 can be improved similarly to the case where the coil spring 30 is used. Further, since the height in the vertical direction can be made lower than that of the coil spring 30, the sub operating body 21 can be formed thin.

(Embodiment 2)
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. In this embodiment, as shown in FIG. 5A, the switch case 11 of the switch block 1 is arranged so that the longitudinal direction thereof is parallel to the left-right direction, and the switch block 1 and the operation block 2 are substantially omitted. It is housed in a housing 6 formed in a box.

The switch block 1 is different from that of the first embodiment in the arrangement of the switching unit 10 and the terminal unit 12, and the switching unit 10 is provided to protrude from the inside on the left side of the upper surface of the switch case 11. Is provided on the right surface of the switch case 11 so as to protrude from the inside. The terminal unit 12 includes a set terminal 12a, a reset terminal 12b, and a common terminal 12c. When the switching unit 10 is pushed in by the sub operation body 21, the set terminal 12a and the common terminal 12c are connected and the contact is closed, and the switching unit 10 is closed. When the push-in is released, the reset terminal l2b and the common terminal 12c are connected and the contact is opened. Since the contact mechanism inside the switch case 11 is well known, detailed description is omitted here.

As shown in FIG. 5B, the housing 6 is formed in a box that matches the shape of the switch block 1 and the operation block 2, and on the upper surface, the button portion 23 b of the main button 23 of the operation block 2 is formed. It protrudes to the outside through an insertion hole (not shown), and the terminal portion 12 of the switch block 1 protrudes to the outside through the insertion hole on the right side surface.

Moreover, as shown in FIG.5 (c), you may form the housing | casing 6 in a substantially rectangular parallelepiped shape. In this case, a plurality of mounting holes 60 (two in the drawing) for screwing the housing 6 are provided on the upper surface, and provided at the upper right end portion and the lower left lower end portion of the switch case 11 on the front and rear surfaces, respectively. A switch mounting hole 61 for fixing the switch case 11 to the housing 6 by screwing is provided at a position facing the inserted through hole 14. Then, as shown in FIG. 5 (d), the panel 7 provided with the hole 70 at a position facing the main button 23 and the mounting hole 60 is brought into contact with the upper surface of the housing 6, and the assembly screw 8 is inserted. By screwing, the housing 6 is attached with the button part 23b of the main button 23 exposed to the outside of the panel 7.

As described above, the switch case 11 of the switch block 1 is arranged so that its longitudinal direction is parallel to the left-right direction, so that the longitudinal direction is parallel to the vertical direction. The height in the direction can be further reduced. Further, by storing the switch block 1 and the operation block 2 in the housing 6, workability can be improved when mounting the switch block 1 and the operation block 2 on the panel 7 or the like as compared with the case where the switch block 1 and the operation block 2 are individually mounted. .

It is a rear view which shows the push switch of the 1st Embodiment of this invention. It is a figure which shows a locking mechanism same as the above, (a) is the top view which looked at the heart-shaped cam from the right side, (b) is explanatory drawing showing the level | step difference of each area | region in an outer peripheral part, (c) is a side view of a lock pin. is there. In the operation explanatory view of the above, (a) is a diagram showing a state in which the switching unit starts to be pushed in, (b) is a diagram showing a state in which the switching unit is completely pushed in, and (c) is a diagram in which the main button is completely It is a figure which shows the state pushed in, (d) is a figure which shows the state in which the operation body was locked. It is a figure which shows the case where a leaf | plate spring is used as an escape means same as the above, (a) is a rear view, (b) is a top view of a leaf | plate spring. It is a figure which shows the push switch of the 2nd Embodiment of this invention, (a) is an internal block diagram, (b) is a front view, (c) is a layout drawing of an attachment hole, (d) is a panel. It is a figure which shows the case where it attaches. It is a front view which shows the conventional push switch.

DESCRIPTION OF SYMBOLS 1 Switch block 10 Switching part 2 Operation block 20 Operation body 21 Sub-operation body 3 Escape means 30 Coil spring

Claims (5)

The switch block consists of a switch block that opens and closes contacts and an operation block that operates the switch block. The switch block is housed in a switch case and opens and closes the contact. A switching unit that closes the contact of the contact mechanism only while it is mounted and pushed in, and the operation block penetrates into and out of the operation case and is slidably mounted. And a lock mechanism that holds the operating body in a state where the operating body is pushed into the case, and the lock mechanism is operated with a reference position in which the operating body is not pushed in each time the pushing operation is performed, Push switch that switches the position of the operating body according to the lock position where the body is held by the lock mechanism, and the switch block and the operating block are orthogonal to the operating direction of the operating body Disposed side by side in that direction, provided the operating body conjunction with the pushed freely pushes the switching portion auxiliary operating member, the operating body is, every time it is a push operation, the sub is further pressed than the lock position The position can be switched between the reference position and the lock position via the operation position in which the operation body pushes the switching unit, and the operation body is operated together with the operation body when the operation body is pushed from the reference position to the operation position. A push switch characterized in that an escape means is provided to prevent the sub operating body from moving from the position to the lock position . 2. The push switch according to claim 1 , wherein the escape means comprises a coil spring attached between the sub operating body and the operating body and biased in a direction from the operating position toward the reference position. . It said relief means, the push switch according to claim 1, characterized in that it comprises a leaf spring which attached to the operation member is biased in a direction toward the reference position from the operating position between the auxiliary operating member and the operating member . It said switch block, push switch of claim 1, wherein the longitudinal direction of the case for switch is arranged so as to be parallel to the direction perpendicular to the operating direction of the operating body. The push switch according to any one of claims 1 to 4, wherein the operation block and the switch block are housed in a single housing .

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