JP3092440U - Limit switch - Google Patents

Abstract

(57) [Summary] (with correction) [Problem] To provide a left / right shared limit switch that can respond to an electric curtain coming from the left and right. SOLUTION: A case 1 accommodating a contact portion 4, and a case 9 which is slidably penetrated through the case 1 and has a pushed portion 9 at one of its penetrating ends, is provided. An operation unit 10 having a stopper 11 for regulating the amount of protrusion in the case 1 and operating the contact unit 4 when the pushed portion 9 is pushed.
And a spring 3 for urging the lever 2 in the direction in which the pushed portion 9 protrudes. The position of the contact portion 4 operated by the operating portion 10 is within the case 1. The contact portion 4 is disposed on the case 1 so as to be substantially at the center of the lever 2 in the sliding direction.
So that the projecting direction of
It is configured to be able to be inverted and stored in the case 1.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to a limit switch suitable for an electric curtain.

[0002]

[Prior art]

  The electric curtain detects the closed and open positions of the curtain and stops the motor. Limit switch is used.

[0003]   A conventional limit switch of this kind is shown in FIG. Lever 1 having a pushed portion 100 that is pushed by the switch piece attached to 01 is slidably provided on the case 102, and the lever 101 is projected by the spring 103. And the lever 101 is pushed by the curtain to operate. The micro switch 104 to be made is housed and connected to the micro switch 104. The terminal portion 105 is provided.

[0004]   Therefore, the electric curtain is driven by a motor, for example, the limit switch in the closed position. When the lever 101 of the switch is pushed by the switch piece, the lever 101 Operation of the switch 104, and its electric signal is transmitted to the control circuit through the terminal 105. Data can be stopped.

[0005]   In this limit switch, a screw 107 also used to close the cover 106 is attached to a mounting hole 108. The back of the case 102 to a mounting plate (not shown) through the Is attached to the mounting plate, and the mounting plate is attached to the curtain rail.

[0006]

[Problems to be solved by the device]

  However, when adopting such a configuration, from the left side of the limit switch It can detect moving electric curtains, but the electric curtain coming from the right side Can't be detected. Therefore, the same configuration as shown in FIG. However, a limit switch with all parts symmetrically arranged was separately manufactured. Note that The same functions as those in FIG. 15 are designated by the same reference numerals.

[0007]   Therefore, one type of limit switch can be applied to the electric curtain coming from the left and right. Things were desired.

[0008]   Therefore, the purpose of this invention is to support left and right electric curtains. It is to provide a shared limit switch.

[0009]

[Means for Solving the Problems]

  The limit switch according to claim 1 is a case in which a contact portion is housed, and this case. Has a pushed portion at one of its penetrating ends and is slidably attached to the front portion of the pushed portion. There is a stopper inside the case that regulates the amount of protrusion from the case and A lever having an operating portion for operating the contact portion when the portion is pushed, , A limit provided with a spring for urging this lever in a direction in which the pushed portion projects In the switch,   The position of the contact portion operated by the operation portion is the lever within the case. The contact portion is arranged in the case so as to be substantially in the center in the sliding direction of With respect to the lever, the pushing direction of the pushed portion is opposite to the case. As described above, it is configured so that it can be inverted and stored in the case. is there.

[0010]   According to the limit switch of claim 1, the lever is inverted and arranged on site. You can simply configure either left or right limit switches Therefore, it is possible to provide a left-right shared limit switch.

[0011]   A limit switch according to claim 2 is the limit switch according to claim 1, wherein the lever is It is a rectangular plate having a pushing portion at one end, and has a substantially H shape at the end opposite to the pushed portion. It has a slit, and the operating portion is formed in a substantially trapezoidal shape and protrudes toward the contact portion. The spring is a compression coil spring and is fitted and retained in the slit, The end of the spring is locked to the case when the spring is locked to the case. is there.

[0012]   According to the limit switch of claim 2, in addition to the same effect as that of claim 1, The spring is integrated when the bar is turned over, so workability is good and the spring fits. Easy to wear and hard to come off.

[0013]   A limit switch according to claim 3 is the limit switch according to claim 2, wherein the contact portion is a microphone. The switch and the operation part are pushed to move in a direction perpendicular to the moving direction. Actuator having a protrusion and operating the microswitch by the action of the protrusion Data.

[0014]   According to the limit switch of claim 3, in addition to the same effect as that of claim 2, The movement of the lever in the sliding direction is changed to the movement in the direction perpendicular to it by the actuator. Therefore, it can be transmitted to the micro switch.

[0015]   The limit switch according to claim 4 is the limit switch according to claim 1 or 2. The contact portion has a fixed contact and a movable contactor having a movable contact that comes in contact with and separates from the fixed contact. Of the movable contactor is rotatably supported between the movable contactor and the operating portion. It has a flat surface portion facing the intermediate portion and is pushed by the operation portion to move the operation portion. The movable contactor is driven by the side edge corners of the flat surface portion having a protrusion that rotates in the moving direction. It is provided with a rotating body that moves.

[0016]   According to the limit switch of claim 4, the same as in claim 1 or claim 2. In addition to the effect, the cost can be reduced.

[0017]

[Embodiment of device]

  A first embodiment of the present invention will be described with reference to FIGS. Ie this The limit switch has a case 1, a lever 2, a spring 3, and a contact portion 4.

[0018]          The case 1 houses the lever 2 and the contact portion 4. One side of case 1 is open It has a mouth and is closed by a cover 5 as shown in FIG. Partition inside case 1 The contact portion 4 is accommodated on the lower side via the plate 15, and the horizontally elongated rectangular lever is accommodated on the upper side. A space 7 is formed, and grooves 8 for inserting the lever 2 inside and outside are formed at both ends of the case 1. Is formed in.

[0019]   The lever 2 is slidably pierced through the case 1 and has a pushed portion at one of its piercing ends. 9 has a stopper 11 for restricting the protrusion amount of the pushed portion 9 from the case 1. 1 and slides in a direction approaching the case 1 when the pushed portion 9 is pushed. An operation unit 10 for operating the contact unit 4 is provided inside the case 1. Lever 2 is pushed The moving part 9 is turned upside down so that the projecting direction is opposite to the case 1. It can be stored in. As shown in FIG. 4, the lever 2 of the embodiment is a The moving part 9 is a rectangular plate bent at one end into, for example, an L shape, and is on the side opposite to the pushed part 9. A slit 12 having a substantially H shape is formed at the end of each of the slits, and the slit 12 is manipulated between the pushed part 9 and the slit 12. The operating portion 10 is formed by cutting into a substantially trapezoidal shape having a working portion 10 and protruding toward the contact portion 4 side. is doing. In addition, the operation unit 10 and the pushed unit 9 are stored at a position near the operation unit 10 between the operation unit 10 and the pushed unit 9. The par 11 is formed by a protrusion.

[0020]   The rear end of the lever 2 may not protrude from the case 1.

[0021]   The spring 3 urges the lever 2 in the direction in which the pushed portion 9 projects from the case 1, and Thus, the stopper 11 is locked to the case 1. The spring 3 is kept compressible on the lever 2. It is a held compression coil spring and is fitted into the slit 12 of the lever 2. lever When 2 is stored in the case 1, the stopper 11 is near the groove 8 on one end side of the case 1. When the spring 3 is in a compressed state, the end 3a of the spring 3 on the side opposite to the pushed portion 9 is locked. It is locked near the groove 8 on the other end side of the case 1.

[0022]   The position of the contact portion 4 operated by the operation portion 10 is within the case 1 It is arranged in the case 1 so as to be substantially in the center in the sliding direction of the -1. Implementation In the form of, the microswitch 6 and the actuation for operating the microswitch 6 The lever 13 is interposed between the user 13 and the actuator 13 and the operating portion 10. A spherical body 16 is provided which is movable in a direction perpendicular to the sliding direction of the -1. Sphere 16 is operated Since it is operated by the working unit 10, the lever 2 slides inside the case 1. A partition for partitioning the contact portion 4 of the case 1 and the lever 2 so as to be substantially in the center of the direction. The cut plate 15 is provided with a recess 17 into which the sphere 16 is fitted, and the width of the recess 17 on the lever 2 side is For example, the inner edge of the recess 17 is tapered so as to be smaller than the diameter of the sphere 16. There is.

[0023]   The micro switch 6 is fixed to the substantially central portion of the case 1 with a screw 27.

[0024]   As shown in FIG. 3, the actuator 13 bends one end 13a of the leaf spring into an L shape. And a seat hole 18 having a smaller diameter than the spherical body 16 for receiving the spherical body 16 is provided in the middle portion. Then, while the sphere 16 is seated in the seat hole 18, the sphere 16 is pushed toward the lever 21 side of the recessed portion 17 16 is pushed up so as to project to the lever 2 side. Therefore, the partition of Case 1 Both sides of each L-shaped piece constituting one end of the actuator 13 on the side of the contact portion 4 of the plate 15. One side of the actuator 13 is provided with four positioning parts 20 for positioning and fixing the side. Between them, the seat hole 18 faces the recess 17, and the tip end is a micro switch. It faces the button 12a of the switch 6. 22 and 23 are terminals provided on the case 1 and The terminals of the black switch 6 are connected by the lead wires 24.

[0025]   As shown in FIG. 2, the cover 5 is threaded with screws 46, and the micro switch of the case 1 is inserted. 6 is passed through a mounting cylinder hole 21 formed in the vicinity of 6 and is screwed to a mounting tool (not shown). It In addition, the case 1 is provided with a locking portion 25 that locks to the mounting tool to prevent rotation. . The cover 5 prevents the lever 2 from coming off the groove 8. And mounting The tool is attached to the curtain rail and the driven part 9 moves the electric curtain. To wait.

[0026]   FIG. 5 shows that the electric curtain moves from the right side to the left side, for example, at the stop position. The pushed portion 9 is pushed by the switch piece provided on the lever, and the lever 2 moves backward against the spring 3. However, the spring 3 is in a compressed state. In this process, the operation unit 10 pushes the sphere 16, When the body 16 moves in a direction perpendicular to the sliding direction of the lever 2, the actuator is moved. The Eta 13 is pushed to elastically deform, and the actuator 13 causes a microswitch. 6 button 12a is pressed. The length of the trapezoidal top of the operating portion 13 is determined by the cover of the lever 2. When the pushing portion 9 contacts the lever receiving projection 26 provided on the outer surface of the case 1, The sphere 16 is set to be pushed even at the large pushing position. As a result, Switch 6 operates, a signal is transmitted to the control circuit through terminals 22 and 23, and the motor stops. You can stop. Next, when the motor is rotated in the reverse direction, the curtain is separated from the lever 2. Therefore, the lever 2 is returned to the projecting position by the spring 3 and the projecting amount is regulated by the stopper 11. The actuator 13 and the micro switch 6 are restored at about the same time. It

[0027]   FIG. 6 shows a state in which the cover 5 is opened and the lever 2 is oriented in the opposite direction and is housed in the groove 8 of the case 1. As in FIG. 1, the stopper 11 and the end portion 3a of the spring 3 are close to the groove 8 of the case 1. Lock by the side. This is because the position of the contact portion 4 operated by the operating portion 10 is the case. The contact part 4 is attached to the case 1 so that the lever 2 is located in the center of the lever 2 in the sliding direction. The lever 2 is arranged such that the protruding direction of the pushed portion 9 is opposite to the case 1. It is realized by reversing and accommodating in the case 1 so as to face each other. This As a result, the pushed portion 9 does not have to move other parts and has a posture in which it is projected to the left side in FIG. Therefore, the electric curtain coming from the left side can be detected and a stop signal can be output. You That is, when the electric curtain pushes the pushed portion 9 from the left side, the spring 3 is not compressed. The lever 2 moves, and the sphere 16 is pressed by the operation unit 10 The micro switch 6 is pressed.

[0028]   The actuator 13 moves linearly or rotates in a direction perpendicular to the sliding direction. The member which is possible and has the seat hole 18 and the sphere 16 placed in the seat hole 18 are the recesses 1 7 and a spring urging it so that it can be locked.

[0029]   A second embodiment of the present invention will be described with reference to FIGS. Ie the first In the embodiment, the spherical body 16 is omitted, and the recess 1 is formed in the intermediate portion of the actuator 13. A protrusion 50 that penetrates 7 and faces the operation unit 10 is formed. FIG. 7 corresponds to FIG. 5, FIG. 9 corresponds to FIG. In the embodiment, as shown in FIG. Is formed by bending the actuator 13 into a mountain shape. Therefore, When the lever 2 slides and retreats as shown in FIG. 7, the protrusion 50 is pushed by the operation unit 10. Then, the actuator 13 is elastically deformed and the button of the micro switch 6 is pushed at the tip. . According to this embodiment, the actuator 13 slides the lever 2 in the sliding direction. Can be transmitted to the microswitch 6 by changing the movement of the Therefore, the sphere 16 of the first embodiment is unnecessary.

[0030]   Others are common to the first embodiment, and therefore the same parts are designated by the same reference numerals and described. Is omitted.

[0031]   A third embodiment of the present invention will be described with reference to FIGS. First implementation In the embodiment, the contact part 4 is movable with respect to the fixed contact 30 and the fixed contact 30. A spring-like movable contactor 32 having a contact point 31, and the movable contactor 32 and the operating portion 10. And a flat portion 33 that is rotatably supported between the and and faces the intermediate portion of the movable contactor 32. A protrusion 36 that has the same and that is pushed by the operation unit 10 and rotates in the moving direction of the operation unit 10. And the movable contactor 32 at the side edge corner of the flat surface portion 33 by the rotation of the protrusion 36. And a rotating body 35 for pressing and driving.

[0032]   In the rotating body 35 of the embodiment, the center of the partition plate 7 of the case 1 is largely cut out. , The mounting cylinder hole 21 is formed on the contact portion 4 side, and the cylindrical rotating body 35 is fitted on the outer periphery thereof. And the flat portion 33 is formed on the peripheral surface of the rotating body 35, and the protruding portion is provided on the side opposite to the flat portion 33. 36 are provided.

[0033]   The terminal 37 is connected to the fixed contact 30, and the terminal 38 is connected to the base end of the movable contact 32. Tied. Other than that, the configuration of the lever 2 and the like is the same as that of the first embodiment, and the same. The same reference numerals are given to the functional parts.

[0034]   This limit switch is operated when the driven part 9 is pushed by the curtain coming from the left side. The projecting portion 36 is pushed by the working portion 10, the rotating body 35 rotates around the mounting cylindrical hole 21, and the flat portion 3 The movable contact 32 is pushed at the corner edge of 3 and the movable contact 31 separates from the fixed contact 30, Since it is in the off state, the detection operation starts and the motor is stopped. Moving curtains When the lever 2 is released from the lever 2, the lever 2 returns and the spring of the movable contactor 32 The rotating body 35 is rotated to its original position by the restoring force of the movable contact 32. Face or face.

[0035]   On the other hand, when the lever 2 is stored in the opposite direction to the case 1, the car coming from the right side Ten can be detected in the same motion.

[0036]   In FIG. 14, the curtain rail 40 is applied to the lower surface of the mounting tool 41 and is pressed by the pressing tool 43. The limit switch case 1 is fixed with screws 41. The attachment 41 is screwed to the attachment 41, and the claw-shaped detent locking portion 25 is attached to the attachment 41. It is locked to the lock receiving portion 48 formed in.

[0037]   The movable contact 31 is normally closed to the fixed contact 30, but is normally open. May be Further, instead of the rotating body 35, a space between the movable contact 32 and the operation unit 10 is provided. Is movably supported in a direction orthogonal to the sliding direction of the lever 2 and is supported by the operation unit 10. It may be a moving body that is pressed to drive the movable contact 32.

[0038]

[Effect of device]

  According to the limit switch of claim 1, the lever is inverted and arranged on site. You can simply configure either left or right limit switches Therefore, it is possible to provide a left-right shared limit switch.

[0039]   According to the limit switch of claim 2, in addition to the same effect as that of claim 1, The spring is integrated when the bar is turned over, so workability is good and the spring fits. Easy to wear and hard to come off.

[0040]   According to the limit switch of claim 3, in addition to the same effect as that of claim 2, The movement of the lever in the sliding direction is changed to the movement in the direction perpendicular to it by the actuator. Therefore, it can be transmitted to the micro switch.

[0041]   According to the limit switch of claim 4, the same as in claim 1 or claim 2. In addition to the effect, the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view of a first embodiment of the present invention with a cover removed.

FIG. 2 is an external view of a limit switch, (a) is a front view and (b) is a bottom view.

FIG. 3 shows an actuator, (a) is a plan view,
(B) is a front view and (c) is a side view.

FIG. 4 shows a lever, (a) is a front view and (b) is a bottom view.

FIG. 5 is a front view of a state in which a lever is pushed.

FIG. 6 is a front view showing a state in which a lever is reversed and attached.

FIG. 7 is a front view of the second embodiment with a cover removed.

FIG. 8 shows a lever, (a) is a front view, (b) is a bottom view, and (c) is a side view.

FIG. 9 is a front view showing a state in which a lever is reversed and attached.

FIG. 10 is a front view of the third embodiment with a cover removed.

FIG. 11 is a sectional view taken along the lever position.

FIG. 12 is a left side view of FIG. 10 with a cover attached.

FIG. 13 is a cross-sectional view taken along the position of the rotating body.

FIG. 14 is a schematic cross-sectional view showing a state in which limit switches are attached to rails.

FIG. 15 shows a conventional example, (a) is a plan view, and (b) is a front view with a cover removed.

16A and 16B show another conventional example, in which FIG. 16A is a plan view and FIG.
[Fig. 4] is a front view with a cover removed.

[Explanation of symbols]

1 case 2 levers 3 springs 4 contact points 5 cover 6 micro switch 9 Pushed part 10 Operation part 11 stopper 12 slits 13 Equator 15 partition boards 16 spheres 17 recess 18 seat holes 30 fixed contacts 31 Moving contact 32 Movable contact 33 Plane 35 Pivoting body 36 Projection 50 protrusions

Claims (4)

[Scope of utility model registration request] 1. A case accommodating a contact portion and a pushed portion slidably penetrating the case and having a pushed portion at one of the penetrating end portions thereof, the amount of protrusion of the pushed portion from the case is regulated. And a lever having an operating portion in the case for operating the contact portion when the pushed portion is pushed, and a lever to be pushed by the pushed portion. In a limit switch having a spring for urging in the direction, the contact portion is arranged such that the position of the contact portion operated by the operation portion is substantially in the sliding direction of the lever in the case. The limit switch is arranged in a case, and the lever is configured to be reversible so that the lever can be housed in the case so that a protruding direction of the pushed portion is opposite to the case. . 2. The lever is a rectangular plate having the pushed portion at one end thereof, and is substantially H-shaped at the end opposite to the pushed portion.
-Shaped slit, the operating portion projects in a substantially trapezoidal shape toward the contact portion, the spring is a compression coil spring and is fitted and retained in the slit, and the stopper is engaged with the case. The limit switch according to claim 1, wherein an end portion of the spring is locked to the case in a stopped state. 3. An actuator for operating the micro switch by the operation of the protrusion, wherein the contact portion has a micro switch and a protrusion pushed by a movement of the operation portion in a direction perpendicular to the movement direction. The limit switch according to claim 2, further comprising: 4. The contact portion includes a fixed contact, a movable contact having a movable contact that contacts and separates from the fixed contact, and is rotatably supported between the movable contact and the operating portion. The movable contact has a flat portion facing the intermediate portion of the movable contact, and a protrusion that is pushed by the operating portion to rotate in the moving direction of the operating portion. The limit switch according to claim 1 or 2, further comprising a rotating body that is pressed and driven.