Safety switch device

Abstract

A safety switch device (1) comprises: a device body (2); a movable part (3) arranged to be movable relative to the device body in a predetermined moving direction; and a holding part (4) for holding the movable part at a desired position relative to the moving direction of the device body, wherein the device body comprises a main body side clamping part for tightly contacting one side of a portable terminal (100), the movable part comprises a movable part side clamping part, the movable part side clamping part and the main body side clamping part being arranged relative to each other in the moving direction and tightly contacting the other side of the portable terminal, and the holding part comprises: A rack (20) is provided on one of the device body or the movable part along the moving direction; an engaging tooth component (21) is provided on the other of the device body or the movable part and is supported to be movable in a direction intersecting the moving direction; and an elastic component (22) applies force to the engaging tooth component in a direction of engagement with the rack, wherein the rack and the engaging tooth component have the following shape: in the engaged state, they can move in a direction of reducing the gap between the clamping part on the main body side and the clamping part on the movable part side and cannot move in the opposite direction.

Description

Technical Field

[0001] The present disclosure relates to a safety switching device. Background Art

[0002] There is known a robot operating unit that is detachably mounted on a commercially available portable terminal and constitutes a teaching device for a robot (for example, see Patent Document 1).

[0003] This robot operation unit includes an operation unit main body including an emergency stop button and the like, and an attachment for attaching the operation unit main body to a portable terminal.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2017-202550 Summary of the Invention

[0007] Problems to be solved by the invention

[0008] In order to attach the operation unit body to portable terminals of different sizes, the attachment is provided on the operation unit body so as to be movable in the width direction of the portable terminal, and the portable terminal can be sandwiched between the attachment and the operation unit body by the elastic force of the coil spring.

[0009] In this robot operating unit, when the width dimension of the portable terminal to be clamped is small, the coil spring is elastically deformed slightly, and when the width dimension of the portable terminal is large, the coil spring is elastically deformed significantly.

[0010] That is, portable terminals with different widths are clamped with different clamping forces, so, in particular, portable terminals with small widths may fall off due to insufficient clamping force. Therefore, it is preferred that a stable mounting state be maintained even if the widths vary greatly.

[0011] Solutions for solving problems

[0012] One aspect of the present disclosure is a safety switch device, comprising: a device body; a movable portion, which is provided on the device body in a manner capable of moving in a predetermined moving direction; and a holding portion, which holds the movable portion at a desired position relative to the device body in the moving direction, wherein the device body comprises a main body-side clamping portion for tightly contacting one side of a portable terminal, the movable portion comprises a movable portion-side clamping portion, the movable portion-side clamping portion being arranged opposite to the main body-side clamping portion in the moving direction and tightly contacting the other side of the portable terminal, and the holding portion having a movable portion. The present invention further comprises the following steps: a rack provided on one of the device main body or the movable part along the moving direction; an engaging tooth component provided on the other of the device main body or the movable part and supported to be movable in a direction intersecting the moving direction; and an elastic component which applies a force to the engaging tooth component in a direction of engagement with the rack, wherein the rack and the engaging tooth component have a shape that, in an engaged state, can move in a direction of reducing the gap between the clamping part on the main body side and the clamping part on the movable part side and cannot move in an opposite direction.

[0013] According to the above structure, when the portable terminal is clamped between the main body side clamping portion and the movable side clamping portion, the rack engages with the engaging tooth member, thereby maintaining the portable terminal in a clamped state between the main body side clamping portion and the movable side clamping portion. This has the following advantages: the clamping force does not vary depending on the size of the portable terminal to be clamped, and a reliable mounting state can be maintained even for portable terminals of various sizes arbitrarily selected by the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view showing a safety switch device according to one embodiment of the present disclosure.

[0015] Figure 2 yes Figure 1 Side view of the safety switching device.

[0016] Figure 3 yes Figure 1 Rear view of the safety switch device.

[0017] Figure 4 The operator is shown holding Figure 1 Rear view of the state of the handle of the safety switch device.

[0018] Figure 5 Yes Figure 1 A partially enlarged view illustrating the retaining portion of a safety switch device.

[0019] Figure 6 Yes Figure 5A partially enlarged view illustrating the operation of the retaining portion.

[0020] Figure 7 It is shown in Figure 1 The safety switch device is installed with Figure 1 Front view of the states of portable terminals of different sizes.

[0021] Figure 8 It shows Figure 1 Rear view of a modified example of a safety switch device with a different handle shape.

[0022] Figure 9 Press and hold with your thumb Figure 8 A rear view illustrating the configuration of a safety switch included in a safety switch device.

[0023] Figure 10 Press and hold with your index finger Figure 8 A rear view illustrating the configuration of a safety switch included in a safety switch device.

[0024] Figure 11 Yes Figure 1 A partially enlarged view illustrating a protrusion in a modified example of a safety switch device.

[0025] Figure 12 Yes Figure 11 The action of the protrusion is explained with a partial enlarged view.

[0026] Figure 13 Yes Figure 11 A partial enlarged view illustrating further operation of the protrusion.

[0027] Figure 14 It shows Figure 11 Front view of the safety switch device.

[0028] Figure 15 yes Figure 11 A partial enlarged view of the safety switch device.

[0029] Description of reference numerals:

[0030] 1 Safety switch device

[0031] 2 Device body

[0032] 3 Slider (movable part)

[0033] 4. Holding part

[0034] 6 Safety switch

[0035] 7. Handle (grip)

[0036] 10 First clamping part (main body side clamping part)

[0037] 14 Second clamping part (clamping part on the movable part side)

[0038] 17, 18 buffer parts (elastomer)

[0039] 19 Coil spring (force applying component)

[0040] 20 rack

[0041] 20a teeth

[0042] 21 Engaging tooth component

[0043] 21a tooth

[0044] 22 Coil spring (elastic component)

[0045] 24 Disbanding the organization

[0046] 25, 26, 27 protrusions (locking mechanism)

[0047] 28 cables

[0048] 29 Connectors

[0049] 100 portable terminal DETAILED DESCRIPTION

[0050] Hereinafter, a safety switch device 1 according to an embodiment of the present disclosure will be described with reference to the drawings.

[0051] like Figures 1 to 3 As shown, the safety switch device 1 of this embodiment includes a device body 2 and a slider (movable portion) 3. The device body 2 has a longitudinal direction, and the slider 3 is mounted on the device body 2 so as to be movable along the longitudinal direction (predetermined movement direction). In addition, the safety switch device 1 includes a holding portion 4 that holds the device body 2 and the slider 3 fixed in a desired position in the movement direction.

[0052] An emergency stop button 5 is provided on the front surface of the device body 2, and a safety switch 6 and a handle (holding portion) 7 are provided on the back surface of the device body 2. The emergency stop button 5 is located near one end of the device body 2 in the longitudinal direction. A cable 6 is attached to the other end of the device body 2 in the longitudinal direction, and the cable 6 connects the emergency stop button 5 and the safety switch 6 to a control device (not shown).

[0053] The handle 7 is formed in a truncated cone shape protruding from the back surface of the device body 2 in a direction perpendicular to the back surface. The safety switch 6 is arranged at a position protruding from the outer peripheral surface of the handle 7 toward one end of the device body 2 in the longitudinal direction.

[0054] like Figure 4 As shown, the safety switch 6 is located at the position where the index finger or thumb of the operator's right or left hand is located when the operator is holding the handle 7. The operator presses the safety switch 6 with the index finger or thumb of the hand holding the handle 7 to allow operation of the portable terminal 100, and the operator separates the hand from the safety switch 6 to enter the emergency stop state.

[0055] like Figure 1 as well as Figure 2 As shown, a groove 9 and a first clamping portion (main body side clamping portion) 10 are provided on the surface side of the device body 2. The groove 9 extends in the longitudinal direction, and the first clamping portion 10 is arranged on one end side of the groove 9. The first clamping portion 10 includes a contact surface 11 and a protrusion 12. The contact surface 11 extends in a direction perpendicular to the longitudinal direction and contacts one end edge of the portable terminal 100. The protrusion 12 holds the one end edge of the portable terminal 100 from separating from the contact surface 11.

[0056] The slider 3 includes a strip-shaped sliding portion 13 and a second clamping portion (movable portion-side clamping portion) 14. The sliding portion 13 is housed in the groove 9 so as to be movable in the longitudinal direction from the other end side of the groove 9. The second clamping portion 14 is provided at one end of the sliding portion 13. The second clamping portion 14 includes a contact surface 15 and a protrusion 16. The contact surface 15 extends in a direction perpendicular to the longitudinal direction and contacts the other end edge of the portable terminal 100. The protrusion 16 holds the other end edge of the portable terminal 100 from coming off the contact surface 15.

[0057] like Figure 1 as well as Figure 2 As shown, the first clamping portion 10 and the second clamping portion 14 are arranged at opposite positions in the longitudinal direction of the device body 2. In addition, elastically deformable buffer members (elastic bodies) 17 and 18 are provided on the abutting surface 11 of the first clamping portion 10 and the abutting surface 15 of the second clamping portion 14, respectively.

[0058] like Figure 1 As shown, a coil spring (biasing member) 19 is disposed between the slider 3 and the device body 2 , and the coil spring 19 biases the first clamping portion 10 and the second clamping portion 14 in a direction in which the first clamping portion 10 and the second clamping portion 14 approach each other.

[0059] like Figure 1 As shown, the holding portion 4 includes a rack 20, an engaging tooth member 21, and a coil spring (elastic member) 22. The rack 20 is provided on the slider 3, the engaging tooth member 21 is provided on the device body 2 and can mesh with the rack 20, and the coil spring 22 uses its elastic force to urge the engaging tooth member 21 toward a position where it meshes with the rack 20.

[0060] Specifically, the rack 20 includes a plurality of teeth 20a arranged along the side surface of the sliding portion 13. Figure 5 As shown, each tooth 20a of the rack 20 includes an inclined surface 20b located on the side opposite to the second clamping portion 14 in the arrangement direction, and a contact surface 20c located on the side of the second clamping portion 14. The inclined surface 20b is inclined outward in the width direction of the sliding portion 13, toward the second clamping portion 14. The contact surface 20c extends along the width direction of the sliding portion 13.

[0061] Each tooth 20 a of the rack 20 is connected to the inclined surface 20 b of another tooth 20 a adjacent in the arrangement direction via a contact surface 20 c , so that the teeth 20 a are arranged continuously.

[0062] The engaging tooth member 21 includes a plurality of teeth 21a having a shape complementary to a portion of the arrangement direction of the rack 20, for example, seven consecutive teeth 20a. Therefore, when the engaging tooth member 21 is meshed with the rack 20, the seven teeth 21a of the engaging tooth member 21 and the seven teeth 20a of the rack 20 are meshed simultaneously.

[0063] like Figure 5 As shown, the engaging tooth member 21 is housed in a groove 23 formed along a direction perpendicular to the longitudinal direction in the device body 2 so as to be movable in a direction perpendicular to the longitudinal direction. Furthermore, a coil spring 22 is disposed between the engaging tooth member 21 and the device body 2 and biases the teeth 21a of the engaging tooth member 21 in a direction that meshes with the teeth 20a of the rack 20.

[0064] Furthermore, one end of the engaging tooth member 21 is arranged at a position protruding from the side surface of the device body 2 when the teeth 21a of the engaging tooth member 21 are engaged with the teeth 20a of the rack 20. When the operator presses one end of the engaging tooth member 21 in a direction to retract it into the device body 2, the engaging tooth member 21 overcomes the elastic force of the coil spring 19 and moves in a direction perpendicular to the longitudinal direction of the device body 2, thereby releasing the meshing between the engaging tooth member 21 and the rack 20.

[0065] Thus, one end of the engaging tooth member 21 protruding from the side surface of the device body 2 functions as a releasing mechanism 24 for releasing the meshing.

[0066] In this embodiment, if Figure 4 As shown, the engaging tooth member 21 is arranged near an end portion on the other end side of the device main body 2 away from the safety switch 6 extending from the handle 7 toward one end side of the device main body 2 .

[0067] Next, the operation of the safety switch device 1 of this embodiment configured as described above will be described.

[0068] The safety switch device 1 of the present embodiment is mounted on a portable terminal 100 and used.

[0069] As the portable terminal 100, a multifunctional telephone terminal (smartphone) or a tablet terminal etc. can be cited. Figures 1 to 4 In the example shown, the safety switch device 1 is installed on the portable terminal 100 by clamping the portable terminal 100 between the first clamping portion 10 and the second clamping portion 14 by making one end edge of the portable terminal 100 in the longitudinal direction tightly against the first clamping portion 10 and making the other end edge of the portable terminal 100 in the longitudinal direction tightly against the second clamping portion 14.

[0070] In this case, the portable terminal 100 is placed between the first clamping portion 10 and the second clamping portion 14, and the slider 3 is pressed relative to the device body 2 in a direction that brings the first clamping portion 10 and the second clamping portion 14 closer together. The movement of the slider 3 relative to the device body 2 in the direction that brings the first clamping portion 10 and the second clamping portion 14 closer together is assisted by the coil spring 19 placed between the device body 2 and the slider 3.

[0071] At this time, if Figure 6 As shown, the teeth 21a of the engaging tooth member 21 slide along the inclined surfaces 20b of the teeth 20a of the rack 20, causing the teeth 21a of the engaging tooth member 21 to jump onto the teeth 20a of the rack 20. As a result, the engaging tooth member 21 overcomes the elastic force of the coil spring 22 and moves in a direction to release the meshing with the rack 20, and the teeth 21a of the engaging tooth member 21 pass over the teeth 20a of the rack 20.

[0072] As a result, the slider 3 moves relative to the device body 2 by one tooth of the rack 20 in a direction that brings the first clamping portion 10 and the second clamping portion 14 closer together. This action is repeated a desired number of times, and the portable terminal 100 can be sandwiched between the first clamping portion 10 and the second clamping portion 14.

[0073] As described above, the spacing between the first and second clamping portions 10, 14 is adjusted discretely, in units of the pitch of the teeth 20a of the rack 20. When the first and second clamping portions 10, 14 are moved to their closest position to the longitudinal dimension of the portable terminal 100, the elastic members 17 and 18 disposed on the contact surface 11 of the first and second clamping portions 10, 14, respectively, elastically deform. This allows the portable terminal 100 to be sandwiched between the first and second clamping portions 10, 14, without a gap.

[0074] Furthermore, when the rack 20 and the engaging tooth member 21 are meshed with each other while the portable terminal 100 is securely sandwiched between the first clamping portion 10 and the second clamping portion 14, the contact surfaces 20c of the teeth 20a of the rack 20 and the contact surfaces 21c of the teeth 21a of the engaging tooth member 21 abut in the longitudinal direction of the device body 2. Consequently, even when an external force is applied, the gap between the first clamping portion 10 and the second clamping portion 14 is prevented from widening, and the portable terminal 100 remains sandwiched between the first clamping portion 10 and the second clamping portion 14.

[0075] In this case, according to the safety switch device 1 of this embodiment, when the portable terminal 100 is sandwiched between the first clamping portion 10 and the second clamping portion 14, the rack 20 engages with the engaging tooth member 21, thereby maintaining the portable terminal 100 in the sandwiched state between the first clamping portion 10 and the second clamping portion 14. Specifically, rather than relying on a coil spring that displaces according to the displacement of the slider 3 as in the prior art, the portable terminal 100 is maintained in the sandwiched state by the elastic force of the coil spring 19 that displaces according to the displacement of the engaging tooth member 21. This provides the advantage that the clamping force does not vary depending on the size of the portable terminal 100 being clamped, allowing a secure mounting position to be maintained even for portable terminals 100 of various sizes selected by the operator.

[0076] To use the portable terminal 100 with the safety switch device 1 installed, the operator grasps the handle 7 of the safety switch device 1, which is located on the back of the portable terminal 100, with either the left or right hand, and presses the safety switch 6 with the index finger or thumb of the grasping hand. This allows the operator to operate the portable terminal 100, thereby enabling robot teaching and other operations.

[0077] Furthermore, during the teaching operation of the robot, if the emergency stop button 5 provided in the safety switch device 1 is pressed or the safety switch 6 is released from the pressed state, the robot can be placed in the emergency stop state.

[0078] In this case, according to the safety switch device 1 of this embodiment, one end of the engaging tooth member 21 constituting the release mechanism 24 is disposed at a position away from the hand of the operator holding the handle 7. This prevents the end of the engaging tooth member 21 from being accidentally pressed by the holding hand when operating the portable terminal 100.

[0079] Furthermore, since the engaging tooth member 21 is disposed near the end of the device body 2 that is away from the first clamping portion 10, the rack 20 and the engaging tooth member 21 can be engaged immediately after the slider 3 is retracted into the groove 9 of the device body 2. This provides the advantage of ensuring a wide adjustment range for the gap between the first clamping portion 10 and the second clamping portion 14.

[0080] Furthermore, according to this embodiment, since the engaging tooth member 21 includes multiple teeth 21a that simultaneously mesh with the multiple teeth 20a of the rack 20, the force applied to each tooth 21a can be reduced, thereby maintaining the teeth 21a in a healthy state. In addition, even if one tooth 21a is missing, a stable meshing state can be maintained.

[0081] Furthermore, in order to remove the safety switch device 1 from the portable terminal 100, Figure 6 As shown by the arrow in , by pressing one end of the engaging tooth member 21 constituting the release mechanism 24 in a direction pushing it into the device body 2, the engagement between the engaging tooth member 21 and the rack 20 is released. This allows the slider 3 to move relative to the device body 2 in a direction increasing the gap between the first clamping portion 10 and the second clamping portion 14, thereby allowing the portable terminal 100 to be removed.

[0082] Furthermore, in the case of installing the safety switch device 1 to a portable terminal 100 of a different size, for example, Figure 7 As shown, the slider 3 can be moved relative to the device body 2 to sandwich the portable terminal 100 between the first clamping portion 10 and the second clamping portion 14 .

[0083] In addition, although the engaging tooth member 21 has 7 teeth 21a in this embodiment, the number of teeth may be any. In addition, the engaging tooth member 21 having a single tooth 21a may also be used.

[0084] In addition, in this embodiment, the case where the rack 20 is provided in the slider 3 and the engaging tooth member 21 is provided in the device body 2 is exemplified, but the reverse may also be true.

[0085] Furthermore, although the engaging tooth member 21 is exemplified as being supported so as to be movable in a direction perpendicular to the moving direction of the slider 3 , it may be supported so as to be movable in a direction intersecting at an arbitrary angle.

[0086] In addition, as the handle 7 held by the operator, a truncated cone-shaped shape protruding toward the back of the device body 2 is exemplified, but instead, Figure 8 As shown in FIG. 1 , the shape may be extended in the longitudinal direction on the back side of the device body 2. In this case, as shown in FIG. Figure 9 as well as Figure 10 As shown, the handle 7 can be grasped.

[0087] In addition, the slider 3 and the engaging tooth member 21 may be provided with Figure 11 The positions shown by the hatched lines are set to Figure 11The projections (locking mechanism) 25 to 27 protrude in a direction perpendicular to the paper surface. The projections (first projection 25 and second projection 26) of the slider 3 and the projection (third projection 27) of the engaging tooth member 21 are in contact with the paper surface. Figure 11 The first protrusion 25 and the second protrusion 26 are arranged in substantially the same position in the direction perpendicular to the paper surface of the slider 3. The first protrusion 25 and the second protrusion 26 are arranged in the moving direction of the slider 3 at a distance slightly larger than the size of the third protrusion 27 along the moving direction.

[0088] exist Figure 11 In the state shown, the first protrusion 25, the second protrusion 26 and the third protrusion 27 are arranged in separate positions and do not engage with each other. Figure 12 As shown, when the engaging tooth member 21 is pushed in from this state to release the engagement between the engaging tooth member 21 and the rack 20 and the slider 3 is pulled out from the device body 2 to the maximum, the first protrusion 25 of the slider 3 abuts against the third protrusion 27 of the engaging tooth member 21.

[0089] In this state, when the force applied to the engaging tooth member 21 is released, Figure 13 As shown in FIG. 1 , the third protrusion 27 is inserted between the first protrusion 25 and the second protrusion 26, and the movement of the slider 3 relative to the device body 2 is locked. That is, since the slider 3 is locked in the position where it is pulled out the most from the device body 2, it does not move. Figure 14 As shown, the gap between the first holding portion 10 and the second holding portion 14 can be maintained in a state where the gap is opened to a value larger than the length of the portable terminal 100 .

[0090] Then, the portable terminal 100 is inserted between the first and second clamping portions 10, 14, which are fully opened. After the upper edge of the portable terminal 100 is pressed against the first clamping portion 10, the engagement between the engaging tooth member 21 and the rack 20 is released. As a result, the slider 3 moves due to the elastic force of the coil spring 19, and the portable terminal 100 is clamped between the first and second clamping portions 10, 14.

[0091] Thus, by providing a mechanism for locking the slider 30, the portable terminal 100 can be more easily installed between the first clamping portion 10 and the second clamping portion 14. In other words, there is no need to apply force to the slider 3 against the elastic force of the coil spring 19 in order to install the portable terminal 100 while expanding the gap between the first clamping portion 10 and the second clamping portion 14 to be larger than the length of the portable terminal 100.

[0092] Moreover, if Figures 11 to 14 As shown, by setting a mechanism that locks the slide 3 so that it does not move when it is pulled out to the maximum extent from the device body 2, as shown in FIG. Figure 15As shown, the cable 28 can be easily connected to the portable terminal 100. The cable 28 may be for signals or for power supply.

[0093] For example, Figure 15 As shown, the socket 30 for connecting the connector 29 of the cable 28 to the portable terminal 100 is often arranged at the center in the width direction of the longitudinal edge of the portable terminal 100. Therefore, it is preferable to arrange the connector 29 in the second holding portion 14.

[0094] In this case, when the slider 3 is locked in the position pulled out as far as possible from the device body 2 and the portable terminal 100 is installed, the portable terminal 100 can be arranged parallel to the moving direction of the slider 3. Therefore, there is an advantage that the connector 29 can be straightly inserted into the socket 30 of the portable terminal 100 by simply moving the slider 3, and damage to the connector 29 and socket 30 caused by oblique insertion can be prevented.

[0095] exist Figure 15 In the embodiment, the connector 29 is arranged in the hole 14a provided in the second clamping portion 14, and the connector 29 is fixed to the second clamping portion 14 by a detachable fixing member 31. Alternatively, the connector 29 may be embedded in the second clamping portion 14 without using the fixing member 31.

[0096] Furthermore, the connector 29 is provided with a sealing member 32 that is compressed between the connector 29 and the receptacle 30 when the connector 29 and the receptacle 30 are coupled together, thereby making the contact points between the connector 29 and the receptacle 30 waterproof. Alternatively, a portion of the cushioning member 18 disposed on the contact surface 15 may be used as the sealing member.

[0097] In addition, Figures 11 to 14 In the embodiment, two second protrusions 26 and two third protrusions 27 are provided, but instead, one may be provided for each.

[0098] The slider 3 and the engaging tooth member 21 that moves relative to the slider 3 constitute a locking mechanism with the protrusions 25 to 27 provided thereon. Alternatively, another locking mechanism that can lock the movement of the slider 3 relative to the device body 2 may be used.

Claims

1. A safety switch device, characterized in that: have: Device body; a movable portion capable of moving in a predetermined moving direction relative to the device main body; and a holding portion that holds the movable portion at a desired position in the moving direction relative to the device body, The device body includes a body-side clamping portion that contacts one side of the portable terminal. The movable portion includes a movable portion side clamping portion, the movable portion side clamping portion and the main body side clamping portion are arranged opposite to each other in the moving direction and in contact with the other side of the portable terminal. The holding portion includes: a rack provided on one of the device body or the movable portion along the moving direction; an engaging tooth member provided on the other of the device main body or the movable portion and supported so as to be movable in a direction intersecting the moving direction; as well as an elastic member for applying force to the engaging tooth member in a direction of meshing with the rack, The rack and the engaging tooth member have a shape that, in the meshed state, can move in a direction to reduce the gap between the main body side clamping portion and the movable portion side clamping portion and cannot move in the opposite direction. The movable portion-side clamping portion can hold the connector, which connects a cable to the portable terminal along the moving direction of the movable portion, in a state where the connector is prevented from moving in a direction opposite to the moving direction.

2. The safety switch device according to claim 1, characterized in that The engaging tooth member includes a plurality of teeth that mesh simultaneously with the plurality of teeth of the rack.

3. The safety switch device according to claim 1 or 2, characterized in that: The safety switch device includes a releasing mechanism that moves the engaging tooth member in a direction away from the rack to release the meshing between the engaging tooth member and the rack.

4. The safety switch device according to claim 3, characterized in that: The device body includes a grip portion to be gripped by an operator's hand. The grip portion includes a safety switch that can be turned on when the grip portion is gripped by the hand and turned off when the grip portion is not gripped. The release mechanism is arranged at a position where the safety switch is placed in the on state and is difficult to be released by the hand that is gripping the grip portion.

5. The safety switch device according to claim 1 or 2, characterized in that: An elastic body is provided on at least one of the main body-side clamping portion and the movable portion-side clamping portion. The elastic body is elastically deformable by being pressed by the portable terminal.

6. The safety switch device according to claim 1 or 2, characterized in that: The rack is provided on the movable part, The engaging tooth component is provided on the device body.

7. The safety switch device according to claim 6, characterized in that: The engaging tooth member is arranged near an end portion on a side close to the movable portion-side clamping portion.

8. The safety switch device according to claim 1 or 2, The safety switch device includes a biasing member that biases the main body-side clamping portion and the movable portion-side clamping portion in a direction in which the main body-side clamping portion and the movable portion-side clamping portion approach each other.

9. A safety switch device, characterized in that: have: Device body; a movable portion capable of moving in a predetermined moving direction relative to the device main body; and a holding portion that holds the movable portion at a desired position in the moving direction relative to the device body, The device body includes a body-side clamping portion that contacts one side of the portable terminal. The movable portion includes a movable portion side clamping portion, the movable portion side clamping portion and the main body side clamping portion are arranged opposite to each other in the moving direction and in contact with the other side of the portable terminal. The holding portion includes: a rack provided on one of the device body or the movable portion along the moving direction; an engaging tooth member provided on the other of the device main body or the movable portion and supported so as to be movable in a direction intersecting the moving direction; as well as an elastic member for applying force to the engaging tooth member in a direction of meshing with the rack, The rack and the engaging tooth component have the following shape: in the engaged state, they can move in the direction of reducing the gap between the main body side clamping part and the movable part side clamping part and cannot move in the opposite direction. The safety switch device has a locking mechanism, which can lock the movable part relative to the device body when the main body side clamping part and the movable part side clamping part are separated by a gap that can be used to configure the portable terminal, so as to prevent the movable part from moving toward the device body side.

Images