JP2013206870A - Switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the acting stroke of an operation part constant against a tensile force in a switch device whose operation part is extended, thereby optimizing the switch function.SOLUTION: A switch operation part (6) connected to a switch body (4) which is switched between ON and OFF by a pull operation has a tensile force caused by a pull operation on an actuation rope (8) and applied thereto via a coupling member (10). The actuation rope is partly fixed to a base part around the switch body, and has an excess length portion (12) formed therein which moves by tension. The switch operation part is connected to the switch body, and conveys a tensile force caused by a pull operation to the switch body. The coupling member connects the actuation rope and the switch operation part in parallel, and is displaced by the movement of the excess length portion of the actuation rope, applying a pull operation to the switch operation part. An elastic member (13) is connected at one end to the coupling member, letting the excess length portion move to the switch body side.

Description

The present invention relates to a switch device that can be operated at a position separated from a switch body.

  As a switch device for switching between activation and deactivation of a function, for example, there is an alternate type pull switch that switches ON / OFF only by a pulling operation on an operation unit. For example, in order to enable operation from a long distance, this switch device includes a device in which an operation unit is set to be long, and a device in which a rope, a wire, or the like is installed on the operation unit.

  With regard to such a switch device, a rope is installed through a spring at the tip of the operation part of the limit switch for emergency stop of the device, and the rope is stretched around the device to operate the switch from any place of the device. The thing is known (for example, patent document 1). In addition, it is known that a string switch is installed along an assembly line of a factory, and that an operating lever of a limit switch is pulled by pulling the string switch (for example, Patent Document 2).

JP-A-5-169514 JP 2006-205306 A

  By the way, the switch device has a certain limit length for the pulling operation with respect to the operation unit. If the operation unit is pulled beyond the limit length of the switch device, for example, the operation unit may be broken or the switch device itself may be damaged. The amount of tension applied to the operation unit needs to be adjusted by adjusting the operation by the user.

  A switch device with a pulling operation may be installed on a production line in a factory or the like, for example, and may be used as a warning switch for reporting a warning or stopping a line when an abnormality occurs. In recent years, there is a case where a so-called “mixed flow-single flow” operation is performed in which a plurality of products are allowed to flow through one conveyor line. In this case, products with different work man-hours are thrown into the same conveyor line, and the movement distance of the worker tends to increase. When the range to be moved is large, a rope or the like is installed in the operation part of the pull switch so that the switch can be operated anywhere, and is placed within the work range.

  A switch device connected to a safety device, an alarm device or the like must be urgently and reliably operated. However, when operating from a long distance via a rope or the like installed on the operation unit, as compared with the case where the operation unit is directly operated, the operation feeling given to the operator and the amount of operation necessary for the operation are different. As a result, there is a problem that the operability of the switch is lowered, such as difficulty in adjusting the force. Further, depending on the distance from the switch body to the operation position, for example, a certain slack is generated in the rope or the like, and the pulling direction toward the switch body is different. As a result, the switch body and the operation unit may be damaged by receiving an excessive tensile force in an unintended direction.

Therefore, in view of the above problems, the switch device according to the present disclosure relates to a switch device in which an operation unit is extended, and the operation stroke of the operation unit with respect to a tensile force is made constant to optimize the switch function.

In order to achieve the above object, the configuration of the present disclosure is configured such that a pulling force to the operating rope is input via a connecting member to a switch operating unit connected to a switch body that is switched ON or OFF by a pulling operation. Is done. A part of the operating rope is fixed to a base portion around the switch body, and an extra length portion that moves by pulling is formed. The switch operation unit is connected to the switch body and transmits a pulling force generated by a pull operation to the switch body. The connecting member connects the operating rope and the switch operating unit in parallel, and is moved by the movement of the extra length of the operating rope, thereby applying a pull operation to the switch operating unit. One end of the elastic member is connected to the connecting member, and the extra length portion is moved to the switch body side.

  According to the switch device of the present disclosure, any of the following effects can be obtained.

  (1) The operating rope is connected to the operating part via a connector, and the operating part can be pulled out beyond the maximum stroke by providing the operating rope with a surplus part according to the stroke amount of the operating part. This prevents the switch from being damaged.

  (2) Limiting the amount of movement of the operating rope eliminates the need to adjust the amount of tension and pulling force on the operating rope, thereby increasing the convenience of the switch device.

  (3) Since there is no need to adjust the amount of tension, it is possible to avoid damage to the switch device, etc. and avoid situations where the amount of tension is small and the switch does not operate, or the switch becomes inoperable due to damage to the switch. The reliability of the switch device can be increased.

  (4) Since the elastic member secures a certain extra length in the switch device, it is possible to prevent malfunction due to the weight of the rope, and to maintain the reliability of the switch device.

Other objects, features, and advantages of the present invention will become clearer with reference to the accompanying drawings and each embodiment.

It is a figure which shows the structural example of the switch apparatus which concerns on 1st Embodiment. It is a figure which shows the structural example of the switch apparatus which concerns on 2nd Embodiment. It is a figure which shows the plane or front structural example of a switch apparatus. It is a figure which shows the structural example of a switch main body. It is a figure which shows the example of arrangement | positioning states of an operating rope and an operation part. It is a figure which shows the example of a setting of the surplus length part based on the stroke of an operation part. It is a figure which shows the structural example of a coupling tool. It is a figure which shows the example of installation of a coil spring. It is a figure which shows the state by which tension | pulling operation was performed to the action | operation rope. It is a flowchart which shows an example of the assembly process of a switch apparatus. It is a figure which shows the structural example of the switch apparatus which concerns on 3rd Embodiment. It is a figure which shows the example of an installation state of a switch apparatus. It is a figure which shows the tension operation state with respect to a switch apparatus. It is a figure which shows the bending state example of the action rope by a guide wall. It is a figure which shows the example of installation of a switch apparatus. It is a figure which shows the example of a state of tension | pulling operation in the position P1. It is a state figure which shows a tension operation direction and stroke amount. It is a figure which shows the example of a state of tension | pulling operation in the position P2. It is a state figure which shows a tension operation direction and stroke amount. It is a figure which shows the example of a state of tension | pulling operation in the position P3. It is a state figure which shows a tension operation direction and stroke amount.

  [First Embodiment]

  FIG. 1 shows a configuration example of a switch device according to the first embodiment.

  The switch device 2 includes, for example, a base 3, a switch body 4, an operation unit 6, an operating rope 8, a connector 10, and an elastic member 13.

  The base 3 is an example of means for fixing and holding one end or part of the switch body 4 and the operation unit 6. The base 3 may use, for example, a wall such as a building where the switch device 2 is disposed, a support column, or may form a casing for installing the switch device 2.

  The switch body 4 is configured by a pull switch that is switched ON / OFF when a pulling operation is applied via the operation unit 6.

  The operation unit 6 is an example of a switch operation unit of the present disclosure that is connected to, for example, the switch body 4 and transmits a pull operation (pull operation) from the outside. The operation unit 6 has a certain strength so as not to hang down due to its own weight or to be bent.

  The operating rope 8 is an example of means for performing a pulling operation by an operator. One end or a part of the operating rope 8 is installed on the base 3, and is fixed so as not to be displaced even when subjected to a pulling operation. Further, the operating rope 8 is formed with a surplus length portion 12 in which a part of the peripheral side of the switch body 4 is bent. And the operation rope 8 has installed the one part in the coupling tool 10 in the state in which the surplus length part 12 was formed.

  The connector 10 is an example of a unit that connects the operating rope 8 and the operation unit 6. The connection tool 10 connects, for example, the operating rope 8 and the operation unit 6 in parallel. The connector 10 moves in the pulling direction in conjunction with the extra length 12 formed on the operating rope 8 being moved by the pulling operation. And the operation part 6 is expanded-contracted in a pulling direction according to the movement of this connection tool 10. FIG.

  The elastic member 13 is an example of means for elastically supporting the connector 10. The elastic member 13 applies an elastic force in the compression direction to the connector 10 moved by the pulling operation on the operating rope 8 and pulls it back to the initial position. As a result, the extra length portion 12 formed on the operating rope 8 is pulled back to the initial position by the compressive force of the elastic member 13 when the pulling operation is released.

  In the operating rope 8, for example, an extra length portion 12 is formed at the initial position P <b> 1 in an initial state before a pulling operation is performed. When the pulling operation is performed, the extra length portion 12 is pulled and moved to P2. A pulling operation is input to the operation unit 6 by moving the connecting tool 10 along with the movement of the extra length portion 12.

  When the surplus length portion 12 moves from the position P1 to the position P2, the operating rope 8 is in a tight state, and the movement of the connector 10 is stopped. The amount of movement at this time is the stroke L of the switch operation input to the operation unit 6. That is, the surplus length portion 12 functions as a stopper that limits the movement amount of the operation portion 6 to the stroke L.

  According to such a configuration, it is possible to prevent a pulling operation exceeding the limit from being input to the switch body 4 by the extra length portion 12 set in the operating rope 8. Further, it is not necessary for the user to adjust the amount of tension or the tension of the operating rope 8.

  [Second Embodiment]

  FIG. 2 is a diagram illustrating a configuration example of the switch device according to the second embodiment, and FIG. 3 is a diagram illustrating a planar or front configuration example of the switch device. The configurations shown in FIGS. 2 and 3 are examples, and the present invention is not limited to such configurations.

  The switch device 2 illustrated in FIG. 2 is an example of the switch device of the present disclosure, and includes a switch body 4 that switches ON / OFF of a functional device having an alarm function, an operation / stop function, and the like. The switch device 2 is provided with, for example, an operation unit 6 made of a metal wire or a rod-like member on the front side.

  The switch device 2 is provided with an operating rope 8 whose overall length is set longer than that of the operation unit 6. For example, a part or one end side of the operating rope 8 is fixed to the rear surface side of the switch body 4 or a wall disposed around it. The operating rope 8 takes a length set from the fixed end portion and is connected to the distal end portion of the operation portion 6 via the connecting tool 10. At this time, a surplus length portion 12 that moves by pulling is set between the fixed end portion and the connector 10 in the operating rope 8.

  The coupling tool 10 is provided with a coil spring 14 that is arranged in parallel to the operating rope 8, absorbs a force related to the axial direction of the operating rope 8, and biases it toward the switch body 4. The coil spring 14 is an example of the elastic member 13. As shown in FIG. 3, for example, one end of the coil spring 14 is locked to the connector 10, and the other end is locked to a part of the housing wall 16 disposed on the front side of the switch body 4.

  The switch body 4 shown in FIG. 3 is fixedly installed, for example, with a locking part or an adhesive (not shown) with respect to the back casing 18 installed on the back side. The rear housing 18 is an example of the base 3 that fixes a part of the switch body 4 and the operating rope 8. In the rear casing 18, for example, the end of the operating rope 8 is installed on the surface opposite to the surface on which the switch body 4 is fixed. Also, a side case 20 that connects a part of the back case 18 and the case wall 16 is installed on one side of the switch device. The side housing 20 is formed with a length that allows a space in which the extra length portion 12 of the actuation rope 8 can be stored between the switch body 4 and the housing wall 16.

  Note that the housing wall 16, the back housing 18 and the side housing 20 may be integrally formed of the same member, for example. Further, the rear casing 18 and the side casing 20 may use, for example, walls such as a building where the switch device 2 is installed.

  Next, each component which comprises the switch apparatus 2 is demonstrated. FIG. 4 is a diagram illustrating a configuration example of the switch body.

  The switch body 4 is connected to, for example, an operating device 30 installed outside, and an ON / OFF switching instruction for the switch body 4 is output to the operating device 30. The operating device 30 is an example of a power supply device, an alarm device, an emergency stop device, or the like that is installed in a manufacturing device in which the switch device 2 is installed or a line device that forms a production line in a factory, for example. Based on the switching instruction received from the switch body 4, the operating device 30 outputs an alarm, stops power supply to the manufacturing line or the manufacturing apparatus, and the like.

  The switch body 4 includes, for example, a pull operation mechanism 32 to which the operation unit 6 is connected, and a switch 34 that is turned ON / OFF by an operation of the operation unit 6 that is input via the pull operation mechanism 32. The pull operation mechanism 32 is an example of a mechanism unit that converts an input operation in the same pulling direction into an opening / closing operation of the switch 34, for example. As a result, the switch 34 is switched for every pulling operation on the operation unit 6. One end of the operation unit 6 is locked to the pull operation mechanism 32, and when the operation unit 6 is pulled by a certain amount, the internal mechanism unit operates and switches the switch 34. The pull operation mechanism 32 is set with an allowable pulling force depending on the type of the switch body 4, for example.

  Note that the switch 34 of the switch body 4 may be configured integrally with the operating device 30, for example.

  FIG. 5 shows an example of the arrangement state of the operating rope 8 and the operation unit 6. The configuration and state illustrated in FIG. 5 are examples, and the present invention is not limited to such a configuration.

  For example, the operating rope 8 has its distal end or a part of the body fixed to the rear housing 18 by a fixing component 36 so that the entire operating rope 8 does not move by a pulling operation. The fixed component 36 is made of, for example, a metal or a resin material, surrounds and holds a part of the operating rope 8, and is installed in a part of the rear housing 18. The operating rope 8 is disposed, for example, toward the front side of the switch body 4.

  The fixing component 36 is not limited to the case where it is installed in the rear casing 18, and may be installed in any configuration as long as it can be fixed around the switch body 4 without moving the operating rope 8. You may let them.

  The operating rope 8 is fixed through a fixed part 36, for example, deflected at a constant angle with respect to an assumed pulling direction. The operating rope 8 shown in FIG. 5 is fixed by being deflected in a direction substantially orthogonal to the pulling direction, for example, by disposing a fixing means on the back side of the switch body 4. By deflecting the direction of the fixed portion in this way, for example, the body side surface portion of the operating rope 8 can be installed on the rear case 18 and the like, and the tensile force on the operating rope is not transmitted directly to the fixed component 36 but fixed. The breakage of the part 36 is prevented.

  The operation unit 6 is installed, for example, from the distal end side of the switch body 4 toward the connector 10 installed at a predetermined position of the operating rope 8. The operation unit 6 is installed on the front surface side of the switch body 4 so as to be rotatable at a predetermined angle. Is done.

  The extra length portion 12 of the operating rope 8 is an example of a means that moves in the pulling direction with reference to the fixing portion by the fixing component 36 to limit the pulling amount of the operating rope 8 and to make the stroke amount of the operation portion 6 constant. is there. The surplus length portion 12 is formed between a fixed position value by the fixing component 36 and the connector 10 in a state where no tensile force is applied to the operating rope 8, for example. The extra length portion 12 is formed such that a part of the operating rope 8 is bent and bent so that the connector 10 can be advanced and retracted by an input of a pulling operation.

  The surplus length portion 12 is indicated by the movement amount L1 of the connector 10 as shown in FIG. 6A. That is, when the pulling operation is performed with respect to the position of the connector 10A before the pulling operation is performed on the operating rope 8, the extra length portion 12 moves in the pulling direction. Since the connector 10 is fixed so as not to slide with respect to the operating rope 8, the connector 10 moves to the position of the connector 10 </ b> B as the extra length portion 12 moves.

  The extra length portion 12 is set based on, for example, the allowable stroke amount of the operation portion 6 that inputs a pulling operation to the switch body 4. For example, when a pulling operation is not input, the operation unit 6 of the switch main body 4 illustrated in FIG. 6B is arranged at the position of the initial position Pn, and the length L0 at this time is set as the initial length. . For example, as shown in FIG. 6A, the operation unit 6 before the pulling operation is input is deflected toward the connector 10A, and the installation position with the connector 10A is the initial position Pn.

  An operating point Pc is set in the operation unit 8 as the position of the tip portion when the switch body 4 is switched ON / OFF. The operation unit 6 at this time has a length L2, for example, and the distance (L2)-(L0) from the initial position Pn to Pc is the minimum stroke STmin for the switch operation. Further, a pull-out limit point Pb is set in the operation portion 8 as the position of the tip portion that may or may be in a state where the switch body 4 is damaged or the operation portion 8 is broken. The operation unit 8 at this time has a length L3, for example, and the distance (L3)-(L0) from the initial position Pn to Pb is the allowable stroke STmax.

  The length L1 of the surplus length portion 12 is set so that the length of the operation portion 8 is not less than L2 and less than L3, for example, with respect to the operating rope 8 that receives a pulling operation in a predetermined direction. The extra length portion 12 is set to have a length L <b> 1 depending on the installation position of the connector 10 with respect to the operating rope 8. Therefore, the connection tool 10 may connect the operation unit 8 and the operating rope 8 at the position of the operation unit 8 having the maximum length, for example. In addition, the length L1 may be calculated based on the pulling direction, the inclination angle between the operation unit 6 and the operating rope 8, or the like.

  FIG. 7 shows a configuration example of the coupler. The configuration shown in FIG. 7 is an example.

  The connector 10 is an example of a unit that connects the operating rope 8 and the operation unit 6 in parallel to the switch body 4. The connector 10 is changed by the movement of the extra length portion 12 by the pull operation with respect to the operating rope 8. Then, a pull operation is applied to the operation unit 6 based on the displacement.

  7 includes, for example, a gripping portion 40 that grips the body portion of the operating rope 8 without sliding inside, and is formed at both ends of the gripping portion 40 so as to sandwich and support the operation portion 6. The support plate 42 is formed. The grip portion 40 is formed according to the outer shape of the operating rope 8, and is formed on, for example, a circular surface or a square surface. For example, in order to prevent the operating rope 8 from sliding on the inner peripheral side, the gripping part 40 may be constituted by, for example, a member having a high friction coefficient, or may be subjected to surface processing on the inner peripheral surface.

  The support plate 42 is formed in a flat plate shape, for example, and the operation unit 6 is sandwiched inside the support plate 42. Fastening holes 44 and 46 are respectively arranged in the support plate 42 so as to face each other, and the fastening component 48 is passed through the support plate 42. For example, the operation unit 8 may be clamped in the opposing direction by the support plate 42 and may be fixed by winding the distal end side around the fastening component 48.

  FIG. 8 shows an installation example of a coil spring. The configuration shown in FIG. 8 is an example, and the present invention is not limited to such a configuration.

  The coil spring 14 is an example of an elastic member 13 that holds the connector 10 in a predetermined position and moves the extra length 12 to the switch body 4 side. The coil spring 14 includes, for example, an elastic portion 50 and locking portions 52 and 54 formed at both ends thereof. The locking part 52 is locked, for example, in a locking hole 56 formed in the support plate 42 of the connector 10. The locking portion 54 is locked to a locking piece 58 formed on a part of the housing wall 16.

  For example, the coil spring 14 is arranged in parallel to the operation unit 6 and the operating rope 8. The coil spring 14 pulls the connector 10 toward the switch body 4 with reference to the housing wall 16 by, for example, a compressive force. Thereby, in a state where the pulling operation is not performed on the operating rope 8, the connecting portion 10 and the extra length portion 12 are arranged at predetermined positions based on the length of the elastic portion 50, for example.

  Further, the coil spring 14 prevents, for example, sagging due to the weight of the connector 10 and the operating rope 8. The coil spring 14 elastically supports the connecting rope 10 and the operating rope 8 disposed before the connecting tool 10 (not shown), and absorbs the tensile force due to the weight acting in the axial direction of the operating rope 8, for example. Thus, the coil spring 14 prevents the switch device 2 from malfunctioning due to the operation unit 6 being pulled by its own weight, for example.

  As shown in FIG. 9A, when the operating rope 8 is pulled in a direction away from the front side of the switch body 4, for example, the extra length portion 12 moves to move the operating cable 8 in the pulling direction. The operation unit 6 is pulled out of the switch body 4 when the connector 10 moves together with the operating rope 8. And if the operation rope 8 for length L1 (FIG. 8) of the set surplus length part 12 is pulled, the operation rope 8 between the fixed component 36 and the coupler 10 will lose its bend. Even when a tensile force is further applied to the actuation rope 8, the end portion of the actuation rope 8 held by the fixing component 36 or a part of the actuation rope 8 is opposed to the tension force.

  Further, as shown in FIG. 9B, the coil spring 14 is in a state of extending in the pulling direction of the operating rope 8 with reference to the locking piece 58 side by the movement of the coupling tool 10 to which one end is connected. The coil spring 14 is disposed substantially parallel to the operating rope 8 via the connector 10. The coil spring 14 is always applied with a restoring force toward the switch body 4 with respect to the connector 10. The operating rope 8 and the connector 10 are attracted toward the switch body by the restoring force of the coil spring 14.

  When the pulling operation added to a part of the operating rope 8 is released, for example, the connector 10 receives the restoring force of the coil spring 14 and moves to the switch body 4 side. Then, a part of the operating rope 8 is pulled back toward the fixed end along with the connector 10, and is bent with a certain bend around the switch body 4, for example. As a result, the extra length portion 12 extends in the axial direction of the operating rope 8 by the pulling operation, and moves to the initial position by the restoring force of the coil spring 14.

  FIG. 10 shows an example of the assembly process of the switch device. The processing procedure, processing content, and the like shown in FIG. 10 are examples, and the present invention is not limited to such processing.

  In this assembling process, for example, the length L1 of the extra length portion 12 of the operating rope 8 is set according to the allowable length of the pulling amount for the operating portion 10 where the pulling operation is performed (S1). The length L1 of the extra length portion 12 may be set based on, for example, the maximum stroke amount of the operation portion 6 or the like. One end of the operating rope 8 is attached to a set position around the switch body 4 (S2).

  One end of the coil spring 14 is locked as an example of an elastic member to a part of the casing in which the switch body 4 is housed (S3). The connecting tool 10 is attached to the position corresponding to the set extra length 12 with respect to the operating rope 8 (S4). Further, one end of the coil spring 14 is attached to the connector 10 (S5).

  For example, the operation portion 6 is pulled out to the maximum stroke amount STmax and the operation rope 8 with one end fixed is kept in tension as the installation process of the operation rope 8 and the connector 10. In this state, the pulling direction of the switch device 2 is set, the connecting tool 10 is installed at a position where the tip of the operation unit 6 and the operating rope 8 can contact in that direction, and the operating rope 8 and the tip of the operating unit 6 are connected. It may be connected to the connector 10. As a result, for example, the surplus length portion 12 of the operating rope 8 always moves when the operating portion 6 reaches the limit length, and the surplus length portion 12 cannot move any further even if a further tensile force is applied to the operating rope 8. . Accordingly, pulling out of the operation unit 6 is prohibited.

  According to such a configuration, the operating portion 6 is connected to the operating rope 6 with the extra length portion 12 corresponding to the stroke amount of the operating portion 6 and the operating portion 6 via the connector 10. Pulling beyond the length of the long portion 12 is prevented, and damage to the switch is prevented. Since the amount of pulling of the operating rope is limited by the extra length portion 12, adjustment of the pulling force becomes unnecessary, and the convenience of the switch device is enhanced. Because there is no need to adjust the amount of tension, the switch body 4 can be watched for damage and the amount of tension can be reduced, avoiding the situation where the switch does not operate or the switch becomes inoperable due to damage to the switch. The reliability of the device 2 can be improved. By installing the elastic member, a certain extra length portion 12 is secured in the operating rope 8, malfunction due to its own weight or the like can be prevented, and the reliability of the switch device 2 can be maintained.

  [Third Embodiment]

  FIG. 11 shows a configuration example of the switch device according to the third embodiment. FIG. 12 is a diagram illustrating a state example of the switch device when the pulling operation is not performed. The configurations shown in FIGS. 11 and 12 are examples, and the present invention is not limited to such configurations.

<State before switch operation>

  A switch device 70 illustrated in FIG. 11 is an example of the switch device according to the present disclosure. For example, a guide wall 72 is formed on a part of the side surface of the rear housing 18. The guide wall 72 is an example of a means for setting the bending direction by guiding the operating rope 8 by contacting a part of the extra length portion 12 of the operating rope 8.

  For example, the guide wall 72 is inclined at a certain angle from the rear housing 18 toward the front surface side of the switch body 4 and is installed at a height that matches the fixed position of the operating rope 8. The guide wall 72 is formed in, for example, a flat plate shape. When the operating rope 8 receives a tensile force, the guide rope 72 is brought into contact with the flat plate surface and supported in the bending direction.

  Note that the back housing 18 and the guide wall 72 may be integrally formed of the same member.

  The housing wall 16 disposed on the front surface side of the switch body 4 includes, for example, a first housing wall 80 formed with a locking piece 58 on which the elastic component 14 is locked, as shown in FIG. The second housing wall 82 is arranged below the first housing wall 80. A guide wall 86 is formed on the second housing wall 82 so as to oppose the locking piece 58, for example. An opening 88 is formed between the first housing wall 80 and the second housing wall 82 to allow the operation unit 6 and the operating rope 8 to pass therethrough.

  The switch body 4 shown in FIG. 12A is arranged, for example, so as to be separated from the direction of the axis O of the operating rope 8 arranged on the operation side. Therefore, the operation unit 6 is arranged at a certain angle with respect to the connector 10 on the axis O. Further, the extra length portion 12 is formed to be separated from the switch body 4 on the opposite side through the axis O. By arranging in this way, the inclination angle between the axis O and the extra length portion 12 or the operation portion 6 can be reduced, and an excessive load can be prevented from being applied to the operating rope 8 and the operation portion 6.

  In the rear housing 18, for example, a locking part 74 is installed on a part of a surface on which the operation rope 8 is installed. As shown in FIG. 12B, the locking component 74 is locked to a fixing portion 76 installed in a building such as a factory where the switch device 70 is disposed, for example. The locking component 74 is fixed to the rear housing 18 by a fastening component or an adhesive member (not shown), for example, and a fixing portion 76 formed in a columnar shape is provided between the rear housing 18 and the locking component 74. It is fitted. Thereby, the switch device 70 is pivotally supported by the fixing portion 76. For example, a building support may be used as the fixing portion 76.

<State during switch operation>

  FIG. 13 shows an example of a state in which a pulling operation is performed on the switch device. Moreover, FIG. 14 has shown the example of the state of the operating rope at the time of tension | pulling operation.

  As shown in FIG. 13, when a pulling operation is performed on the operating rope 8 in the axis O direction (FIG. 12), the connector 10 moves in the pulling direction together with the extra length portion 12 (FIG. 12) of the operating rope 8. . As a result, the bending of the operating rope 8 due to the extra length portion 12 formed around the switch body 4 is eliminated, and the operating rope 8 is in a tensioned state. In addition, the operation rope 8 is in contact with a part of the periphery of the fixed portion with respect to the rear housing 18 for this pulling operation.

  A part of the operating rope 8 shown in FIG. 14 is in contact with a part of the guide wall 72 on the flat part or the end part side, and a bent part 90 is forcibly formed. For example, the guide wall 72 causes the operating rope 8 to set the bending direction from the position fixed by the fixing component 36 toward the axis O indicating the pulling direction. As a result, the operating rope 8 is arranged on the axis O or in the vicinity thereof from the contact position with the guide wall 72. Therefore, in this switch device 70, the actuation rope 8 can be displaced in the direction set by the guide wall 72 with respect to the pulling operation.

<Features and effects of the third embodiment>

  (1) By providing the guide wall 72 on the fixed installation side of the operating rope 8, the operating rope 8 is pulled against the operating rope 8 beyond the stroke limit of the operation unit 6 installed in the switch body 4. It is avoiding.

  (2) Further, even when the operating rope 8 is extended to the limit, the guide wall 72 remains bent in a certain direction in a part of the operating rope 8, and an excessive tensile force is applied to the operating rope 8. However, a surplus length is left so as not to exceed the limit stroke of the operation unit 6.

  (3) The tensile force applied to the operating rope 8 acts on, for example, the rear housing 18 side by the contact portion 90 between the operating rope 8 and the guide wall 72, so that the load on the fixing portion side by the fixing component 36 is reduced. It is reduced. Thereby, the fracture | rupture of the fixed part of the action | operation rope 8 can be avoided, and the reliability of the switch apparatus 2 is improved.

  (4) Since the bending direction of the operating rope 8 is set by the guide wall 72, displacement of the operating rope in an unintended direction can be prevented, for example, the operating rope 8 contacts the switch body 4 side by the pulling operation direction.

  (5) When the tensile load on the operating rope 8 is released, the bending direction is restricted by the guide wall 72, so that the bending direction due to the bending of the extra length portion 12 can be set to a constant direction.

  (6) The operating rope 8 that has received the tensile force is in a pressure-bonded state with respect to the contact portion (bent portion 90) with the guide wall 72. Thereby, even when the pulling direction is displaced in the vertical direction, for example, it is possible to prevent the operating rope 8 from being largely displaced in the vicinity of the switch body 4 due to the sliding with respect to the contact portion. Can be prevented.

  (7) The surplus length portion 12 is maintained by the elastic force in the compression direction of the coil spring 14 in the operating rope 8 in a state where no tensile force is applied. This prevents the tensile force and the weight of the operating rope 8 from acting on the fixed portion side of the operating rope 8 and the back casing 18. This can prevent malfunction or damage of the switch.

(8) Since the tension input to the switch body 4 is performed via the operating rope 8 and the connecting tool 10 and the stroke that can be operated by the extra length portion 12 of the operating rope 8 is set, the appropriate tensile force and the pulling length are set. Can be maintained. Therefore, in this switch device 2, any switch body can be used regardless of the durability or strength set in the switch body 4.

〔Example〕

  Next, an embodiment of the switch device will be described with reference to FIGS. FIG. 15 shows an installation example of the switch device.

  For example, the switch device 102 is installed in a work area 100 where the worker 108 moves and performs assembly work. In this work area 100, for example, the switch device 102 is installed on the pillar 104 at one end on the ceiling side in the range where the worker 108 moves, and the fixing means 106 is installed on the other end side. Then, the operating rope 8 is installed so as to face the fixing device 106 side from the switch device 102. The operating rope 8 installed in this way has a certain amount of bending due to, for example, setting or its own weight.

  In this embodiment, for example, a pulling operation is performed at the position P1, the position P2, and the position P3 with respect to the installed operating rope 8. In the switch device 102, for example, the worker 108 pulls the operating rope 8 downward at the respective positions P1 to P3. Therefore, for example, a certain downward pulling force is applied to the switch device 102 together with a pulling force in the direction of the fixing means 106 of the operating rope 8.

  FIG. 16 shows a state example of the pulling operation at the position P1. FIG. 17 shows the pulling operation direction and the stroke amount. When the pulling force F1 is applied downward at the position P1 of the operating rope 8 (FIG. 16A), for example, the bending that has occurred in the operating rope 8 when pulled downward by the length L11 is eliminated. The state of the operating rope 8 before the tensile force F1 is applied can be modeled by, for example, a suspension curve F (x) with the lateral direction from the switch device 102 on the fixing means 106 side as a variable x.

  The locus of the vertex due to the action of the tensile force F1 at the position P1 of the operating rope 8 is modeled by, for example, an elliptic curve G1 (x). When the pulling operation is not performed on the operating rope 8 as shown in FIG. 17A, for example, only the own weight of the operating rope 8 acts on the switch device 102. At this time, in the switch device 102, the operating rope 8 slightly inclined downward is elastically supported by the coil spring 14. As a result, the operating rope 8 is not pulled toward the fixing means 106 side, and the extra length portion 12 is formed. Therefore, the connector 10 is located at the initial position Pn, and the operation unit 6 is maintained at the initial length.

  When the tensile force F1 is applied to the operating rope 8 and the bending of the operating rope 8 is eliminated, the operating rope 8 is inclined downward as shown in FIG. 17B. A coil spring 14 extends a certain amount, and supports the operating rope 8 and the connecting tool 10 which are inclined by the elastic force in the expansion and contraction direction. As a result, the connector 10 is maintained at a substantially initial position, the extra length portion 12 of the operating rope 8 is formed, and the operation portion 10 is maintained at the initial length.

  When a tensile force F2 is further applied to the operating rope 8 as shown in FIG. 16C, the operating rope 8 is pulled to the stroke L12 until the switch device 102 functions, for example. The tensile force F2 is, for example, the resultant force of the elastic force of the elastic member 14 of the switch device 102 and the tensile strength of the switch body 4 together with the dead weight of the operating rope 8. The trajectory of the apex of the tension position at this time is modeled by an elliptic curve G2 (x), for example.

  In the switch device 102, for example, the operator 108 can perform the switch operation by performing a pulling operation for the length of the stroke L11 + L12. At this time, in the switch device 102 shown in FIG. 17C, for example, the operating rope 8 is greatly tilted downward and is subjected to a pulling operation. A part of the operating rope 8 is in contact with the guide wall 86 of the housing wall 16. And the connection part 10 moves to the stroke L1, and the operation rope 8 will be in the state which the surplus length part 12 moved and became tight, and it is a stopper for preventing the movement of the operation part 6 and the connection tool 10. FIG. . Further, the coil spring 14 applies a compressive force FB1 to the connector 10 in the direction of the switch body 4, supports the weight of the operating rope 8, and reduces an excessive load on the operation unit 6. .

  Next, FIG. 18 shows a state example when the pulling operation is performed on the operating rope 8 at the position P2. FIG. 19 shows the pulling operation direction and the stroke amount.

  Similar to the operation at the above-described position P1, the operating rope 8 in a state in which no tensile force is applied is a suspension curve (FIG. 18A). When the tensile force F3 is applied to the position R2 in the substantially central portion of the operation area 100 (FIG. 14) with respect to the operating rope 8, the operating rope 8 is not bent and is, for example, a stroke L21 downward from the original position. Move (FIG. 18B). At this time, both end portions of the operating rope 8 are lifted from their original positions by, for example, removing the deflection.

  As shown in FIG. 19B, when the force F3 is applied to the operating rope 8 and lifted, the operation unit 6 is inclined upward together with the connector 10. At this time, the connector 10 is elastically supported by the coil spring 14 and maintained at the initial position Pn.

  When a tensile force F4 is further applied to the operating rope 8, the operating rope 8 is pulled to the stroke L22 until the switch device 102 functions, for example (FIG. 18C). The tensile force F4 is, for example, a resultant force of the elastic force of the elastic member 14 of the switch device 102 and the tensile strength of the switch body 4 together with the weight of the operation rope 8.

  In the switch device 102, for example, the operator 108 can perform the switch operation by performing a pulling operation for the length of the stroke L21 + L22. At this time, in the switch device 102 shown in FIG. 19C, for example, the operating rope 8 is pulled substantially horizontally in the direction of the operation position P2. Then, when the connecting tool 10 is moved by the stroke L1, the surplus length part 12 of the operating rope 8 is moved and tightened, and serves as a stopper for preventing the operation part 6 and the connecting tool 10 from moving. . The coil spring 14 applies a compressive force FB2 to the connector 10 in the direction of the switch body 4, supports the weight of the operating rope 8, and reduces an excessive load on the operation unit 6. .

  Next, FIG. 20 shows a state example when the pulling operation is performed on the operating rope 8 at the position P3. FIG. 21 shows the pulling operation direction and the stroke amount.

  Similar to the operations at the positions P1 and P2 described above, the operating rope 8 in a state where no tensile force is applied is a suspension curve (FIG. 20A). When a tensile force F5 is applied to the operating rope 8 at the position P3 on the fixing means 106 side, the operating rope 8 is not bent and moves downward from the original position by, for example, a stroke L31 (FIG. 20B). At this time, the operating rope 8 is in a state where the fixing means 106 side is displaced downward and the switch device 102 side is lifted from the original position, for example, by removing the bending.

  As shown in FIG. 21B, when the force F5 is applied to the operating rope 8 and lifted, the operation unit 6 is inclined upward together with the connector 10. At this time, the connector 10 is elastically supported by the coil spring 14 and maintained at the initial position Pn.

  When a tensile force F6 is further applied to the operating rope 8, the operating rope 8 is pulled to the stroke L32 until the switch device 102 functions, for example (FIG. 20C). The tensile force F4 is, for example, the resultant force of the operating rope 8 and the elastic force of the coil spring 14 of the switch device 102 and the tensile strength of the switch body 4 together with its own weight.

  In the switch device 102, for example, the operator 108 can perform the switch operation by performing a pulling operation for the length of the stroke L31 + L32. At this time, in the switch device 102 shown in FIG. 21C, for example, the operating rope 8 is pulled substantially horizontally in the direction of the operation position P2. Then, when the connecting tool 10 is moved by the stroke L1, the surplus length part 12 of the operating rope 8 is moved and tightened, and serves as a stopper for preventing the operation part 6 and the connecting tool 10 from moving. . Further, the coil spring 14 applies a compressive force FB3 to the connector 10 in the direction of the switch body 4, supports the weight of the operating rope 8, and reduces an excessive load on the operation unit 6. .

  As described above, according to the switch device 102 of the present disclosure, the operation beyond the stroke amount L1 set in the switch body 4 can be easily prevented. That is, even when a tensile force is applied in a direction different from the operation direction when the switch body 4 is directly operated, the switch operation can be performed without requiring adjustment of the force. Further, it is not necessary to adjust the stroke amount for taking the deflection generated in the operating rope 8 and the stroke amount for activating the switch by the user's force, and the operability of the switch device is improved. In addition, the operation stroke L1 with respect to the switch body 4 is kept constant against pulling from a position where the distance to the switch device 102 is different, and damage to the switch body 4 can be prevented. Thereby, for example, there is no need for a component means for adjusting the tensile force in the middle of the operating rope 8, and the number of components can be reduced, so that the cost can be reduced.

[Other Embodiments]

  (1) Although the coil spring 14 is shown as an example of the elastic member 13 in the above embodiment, the present invention is not limited to this. Any member that can apply a force in the compression direction to the connector 10 may be used. For example, a component made of a resin material having a compression force such as rubber or elastomer may be used. Moreover, you may utilize springs other than a coil shape.

  (2) In the above embodiment, for example, a metal ring member is used as the connector 10, but the present invention is not limited to this. The connector 10 may bind the operating rope 8 and the operation unit 6 by using a binding means such as a tape or putty, for example.

  (3) The fixing position of the operating rope 8 is not limited to the rear housing 18. One end or a part of the operating rope 8 may be fixed to, for example, a base near the switch body 4 (not shown), or may be fixed to a part of the switch body 4.

  (4) In the above embodiment, the case where the extra length portion 12 of the operating rope 8 is formed on the side surface side of the switch main body 4 is shown, but the present invention is not limited to this. The extra length portion 12 may be formed in the circumferential direction including the upper surface side, the lower surface side, and the like of the switch body 4 based on, for example, the position of the operation rope 8 with respect to the switch body 4.

As described above, the preferred embodiments and the like of the switch device of the present disclosure have been described. However, the present invention is not limited to the above description, and the invention described in the claims or disclosed in the specification. It goes without saying that various modifications and changes can be made by those skilled in the art based on the above gist, and such modifications and changes are included in the scope of the present invention.

2, 70, 102 Switch device 3 Base 4 Switch body 6 Operation unit 8 Actuation rope 10 Connecting tool 12 Extra length 13 Elastic member 14 Coil spring 16 Housing wall 18 Rear housing 36 Fixed component 40 Grasping part 42 Support plate 44, 46 Fastening hole 48 Fastening component 50 Elastic part 52, 54 Locking part 56 Locking hole 58 Locking piece 72, 86 Guide wall 76 Fixing part 90 Bending part 100 Working area 102 Switch device

Claims (8)

A switch body that is switched ON or OFF by a pull operation;
An operating rope in which a part is fixed to a base portion around the switch body and an extra length portion that moves by pulling is formed;
A switch operating unit connected to the switch body and transmitting a pulling force by a pull operation to the switch body;
A connecting member that connects the operating rope and the switch operation unit in parallel, and is displaced by movement of an extra length portion of the operating rope, and applies a pull operation to the switch operation unit;
One end is connected to the connecting member, and the elastic member moves the extra length portion to the switch body side,
A switch device comprising: The extra length portion is extended by movement by pulling on the operating rope, and part or all of the extra length portion is bent by movement toward the switch main body by the elastic member.
The switch device according to claim 1. The surplus portion is formed between a fixed portion of the operating rope and a connecting portion by the connecting member.
The switch device according to claim 1 or 2. The surplus length part is formed with a length corresponding to the operation stroke of the switch operation part,
The switch device according to any one of claims 1 to 3. The elastic member has a compressive force capable of absorbing tension due to the weight of the operating rope.
The switch device according to any one of claims 1 to 4. Guiding means for contacting and guiding a part of the operating rope, and bending the extra length portion at a certain angle from the pulling direction;
The switch device according to claim 1, further comprising: And a housing for housing the switch body;
With
The operating rope and the elastic member are fixed to the housing.
The switch device according to any one of claims 1 to 6. The extra length portion is bent in the housing;
The switch device according to claim 7.

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