JP2010153192A - Component attaching structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent breakage by the action of an impact of a fall or the like by preventing a defective operation of equipment due to a malfunction of a lever part caused by the action of external force not intended by an operator without providing a stopper as a separate component. <P>SOLUTION: A guard part 13 is formed integrally with a supporter 1 for supporting a rotor 2 to be rotatable between a fixed position and a released position. The guard part 13 is positioned in a range including an outer end of the front surface of the lever 21 in a radial direction of the rotor 2 between the fixed position and the released position of the rotor 2. Thus, when the rotor 2 is at the fixed position, upper ends of the front surface 13A and a first abutment surface 13B of the guard part 13 are positioned higher than the upper end of the lever 21. When the rotor 2 is at the released position, the upper ends of the front surface 13A and a second abutment surface 13C of the guard part 13 are positioned higher than the upper end of the lever 21. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a part mounting structure for detachably connecting a first part such as an operation part or a display part and a second part such as a contact part or a power feeding part.

  Devices such as pushbutton switches and indicator lamps attached to the control panel include operation parts or display parts arranged on the front side across the panel surface of the control panel, contact parts or power supply parts arranged on the back side, The two parts are provided. For example, when a push button switch is attached to the control panel, generally, a shaft portion formed on the back side of the body of the operation part is penetrated from the front side of the panel with respect to the mounting hole formed in the panel, and the panel After fastening the operating part to the panel by screwing the fastening ring onto the peripheral surface of the shaft part exposed on the back side and clamping the panel between the body of the operating part and the fastening ring, the back side of the panel The contact part is mounted on the shaft part of the operation part.

  Since the push button switch attached to the control panel as described above requires maintenance, inspection, replacement, and the like, the contact part can be easily separated from the shaft part of the operation part. It must be configured so that the pushbutton switch can be removed from the panel. For this reason, in the push button switch, the contact part is detachably attached to the operation part. On the other hand, in order to accurately operate the push button switch in the control panel, it is necessary to maintain the mounting state of the contact component with respect to the shaft portion of the operation component on the back side of the panel.

  For this reason, as a conventional push button switch in which the operation component and the contact component are detachable, an attachment member is provided on the front side of the contact component so as to rotatably support a lock lever as a rotating body in a case as a support. There are some (for example, refer to Patent Document 1).

  The mounting member is formed with a recess formed in the case, which is fitted from the back side to the shaft part of the operation component, and protrudes from four locations on the inner peripheral surface of the recess and is opened to the back side on the peripheral surface of the shaft part of the operation component. An engagement piece that fits into the groove in the direction is provided. Moreover, it protrudes from four places of the inner peripheral surface of the annular portion of the lock lever, and is continuous with the axial groove portion in the axial groove portion formed on the peripheral surface of the shaft portion of the operation component and the intermediate portion in the peripheral surface of the shaft portion. It has a lock claw that fits into the circumferential groove. Further, a base formed with an elastic member for selectively fixing the rotation position of the lock lever to the fixed position or the release position is fitted to the case from the back side.

  When an external force greater than the elastic force of the elastic member acts on the gripping part of the lock lever that is positioned at the fixed position with two parts mounted, the lock lever rotates from the fixed position to the release position. The locking claw moves from the circumferential groove portion to the axial groove portion, and the mounting state of the two components is not maintained.

  When external force is applied to the lock lever grip in the rotation direction of the lock lever, a part of the operator's body or a tool may come into contact with the device during maintenance work. In regard to the case, it is conceivable that the vibration generated when the panel is opened and closed on the front surface of the casing of the control panel acts on the device. In addition, in a device such as a push button switch attached to a panel that is opened and closed on the front surface of the casing of the control panel, a signal or signal is connected between the control device and the power supply device arranged in the casing on the rear side of the panel. Although a power feeding cord is connected, it may be considered that the cord bent when closing the panel abuts against the grip portion of the lock lever.

  In view of this, there is a type in which a stopper formed with a recess into which the grip portion of the lock lever located at the fixed position is fitted in the longitudinal direction is attached to the upper surface of the cover. By attaching this stopper to the case, the gripping part of the lock lever is covered with the stopper and the rotational movement to the release position is restricted, and the lock lever is not exposed to the outside of the case on the back side of the panel. A part of the operator's body, a tool, a cord, or the like is not in direct contact with the grip portion. Further, the rotation operation of the lock lever is also restricted when vibration generated when the panel is opened and closed is applied to the device. Therefore, as long as the stopper is mounted on the case, the lock lever does not move from the fixed position to the released position due to an external force that is not intended by the operator, and the mounting state of the two components is incomplete. It is possible to prevent malfunction of the device.

  However, when attaching and detaching two parts, it is necessary to attach and detach the stopper to the support part, and the mounting work and maintenance work of the equipment become complicated due to an increase in the number of work steps. Moreover, a stopper is required as a component constituting the mounting member in addition to the support, the rotating body, and the elastic member, and the cost increases due to an increase in the number of components. In addition, since the gripping portion of the rotating body is fitted in the stopper in the longitudinal direction, a sufficient space is required in the longitudinal direction of the gripping portion when the stopper is attached and detached, and a plurality of pieces attached adjacent to the protruding direction of the gripping portion from the support body. As a result, the distance between the devices increases, and the size of the device to which the devices can be attached increases.

  For this reason, the applicant attaches a component integrally provided with a lever that is made elastically displaceable between a return position and a retracted position in the rotation plane of the rotating body and a part of which is exposed from the support. A structure was proposed (for example, see Patent Document 2).

With this configuration, the rotary member can be moved from the fixed position to the release position without using the elastic member that selectively fixes the rotation position of the rotary body to the fixed position or the release position, and the stopper that is attached to and detached from the support body. It is possible to reliably regulate, and it is possible to realize the simplification of the installation work and maintenance work of the equipment in which two parts are detachably attached, the cost reduction of the equipment, and the downsizing of the device to which the equipment is attached.
JP-A-10-228835 JP 2001-283694 A

  However, in the conventional component mounting structure disclosed in Patent Document 2, since the lever portion is exposed to the outside, there is a problem that damage is likely to occur due to an impact such as dropping.

  The object of the present invention is to prevent the malfunction of the device due to the malfunction of the lever portion due to the action of an external force not intended by the operator without providing a separate stopper, and to prevent the damage due to the impact such as dropping. It is to provide a component mounting structure.

  As means for solving the above problems, the present invention includes a support and a rotating body. A separate part is detachably mounted on the support from the front side. The rotating body is rotatably supported by the support body between a fixing position for fixing the mounting state of another component to the support body and a release position for releasing the mounting state. The rotating body is integrally provided with a lever extending in a radial direction from a part of the peripheral edge. The support body is integrally provided with a guard portion located in a range including the outer end of the lever in the radial direction between the fixed position and the release position of the rotating body.

  In this configuration, the guard member is positioned on the front side of the outer end of the lever in the radial direction of the rotating body while the rotating body moves from the fixed position to the release position. When a force from the back side to the front side acts on the lever during the rotation operation of the rotating body, the movement of the lever to the front side is restricted by the guard portion, and the lever does not deform excessively. In addition, it is possible to prevent an external force not intended by the operator from acting on the lever portion, and the malfunction of the device due to a malfunction of the lever portion does not occur. Furthermore, when the support body that supports the rotating body falls on the floor surface or the like, the guard portion comes into contact with the floor surface or the like before the lever, and the impact of the drop does not act on the lever.

  In this configuration, it is preferable that the lever portion be elastically displaceable in a direction different from the rotation direction of the rotating body, and that the guard portion be provided with an engaging portion with which the lever is elastically engaged when the rotating body is at the fixed position. The rotating body can be stopped at the fixed position by the engagement between the lever and the engaging portion.

  In addition, the guard portion contacts the first contact surface that contacts the side surface on the fixed position side of the lever when the rotating body is in the fixed position, and the side surface on the release position side of the lever when the rotating body is in the release position. It is preferable to provide the 2nd contact surface which touches. Since the first contact surface and the second contact surface are located outside the side surface of the lever, the impact of the drop acts on the side surface of the lever when the support body supporting the rotating body falls on the floor surface or the like. This can also prevent the lever from being damaged by the impact of dropping.

  According to the present invention, it is possible to prevent the lever from being excessively deformed when an external force is applied to the lever during the rotating operation of the rotating body, and to drop when the support body supporting the rotating body falls on the floor surface or the like. The impact can be prevented from acting on the lever. This prevents an increase in the number of parts due to the use of a stopper of another member, prevents malfunction of the device due to malfunction of the lever due to the external force unintended by the operator, and causes plastic deformation or breakage of the lever. Can be prevented.

  1A and 1B are external views from the front side and the back side of an operation switch to which a component mounting structure according to an embodiment of the present invention is applied. The operation switch 10 includes a support 1, a rotating body 2, a push button 20, and a switch 30.

  The support body 1 and the rotating body 2 constitute the component mounting structure of the present invention. The push button 20 which is an operation part is another part of the present invention, is detachably mounted on the front surface side of the support 1 and receives a pressing operation from the front surface side. The switch 30 that is a contact part is detachably mounted on the back side of the support 1 and includes a contact that opens and closes when the push button 20 is operated. In this embodiment, as an example, three switches 30 are attached to the support 1.

  The rotating body 2 is supported by the supporting body 1 so as to be rotatable between a fixed position for fixing the mounting state of the push button 20 with respect to the supporting body 1 and a releasing position for releasing the rotating body 2. In the state shown in FIG. 1, the rotating body 2 is in a fixed position, and the push button 20 is fixed to the support body 1.

  On the outer peripheral surface of the push button 20, a screw portion 20A and a flange portion 20B are formed. A lock screw 40 is screwed into the screw portion 20A. When attaching the operation switch 10 to a control panel (not shown), first, the push button 20 is inserted into the attachment hole of the control panel from the front side. Next, the lock screw 40 is screwed into the screw portion 20A from the back side of the control panel, and the peripheral portion of the mounting hole in the control panel is sandwiched between the lock screw 40 and the flange portion 20B. Thereafter, the switch 30 is mounted on the support 1 on the back side of the control panel.

  2 and 3 are an assembly view seen from the front side and an assembly view seen from the back side of the operation switch.

  The support body 1 has a rectangular housing shape, and a through hole 11 penetrating in the front-rear direction is formed in the central portion. A support portion 12 that supports the rotating body 2 is formed on the front surface of the support 1. A guard portion 13 is formed on the upper portion of the front surface of the support 1. The guard portion 13 includes a front surface 13A, a first contact surface 13B, a second contact surface 13C, an opening 13D, and an engagement portion 13E. Three pairs of upper and lower clamping claws 14A and 14B protrude from the back surface of the support 1 by three. Each of the three switches 30 is detachably attached to the support 1 by a pair of upper and lower clamping claws 14A and 14B.

  The guard portion 13 is formed integrally with the support body 1. In addition to integrally molding the cover 13 when the support 1 is molded, the guard 13 formed separately from the support 1 may be fixed to the support 1 by bonding or the like.

  The rotating body 2 has an annular shape, and is formed with a lever 21 and a boss portion 22. The lever 21 extends from a part of the outer peripheral portion of the rotating body 2 along the radial direction. The lever 21 has a thin inner portion in the radial direction and is elastically deformable along the rotation axis direction of the rotating body 2. An operation piece 21A and a locking piece 21B protrude from the back surface of the lever 21. The boss portion 22 extends from the inner peripheral portion of the rotating body 2 to the back side. On the inner peripheral surface of the boss portion 22, protrusions 22 </ b> A protrude from four locations. On the outer peripheral surface of the boss portion 22, convex portions 22 </ b> B protrude from four locations.

  The rotating body 2 is attached to the support portion 12 of the support 1 from the front side. On the inner peripheral surface of the through hole 11, recesses 11A are formed at four locations. The rotating body 2 is mounted on the support 1 with the rotation position set to the release position in a state where the convex portion 22B faces the concave portion 11A.

  A pedestal 12 </ b> A is formed in the support portion 12 at four locations. The rotating body 2 is rotatably supported in the support portion 12 with the outer peripheral portion being in contact with the inner peripheral surface of the base 12A and the outer peripheral surface of the boss portion 22 being in contact with the inner peripheral surface of the through hole 11. The

  When the rotating body 2 is attached to the support body 1, the lever 21 is inserted into the opening 13D of the guard portion 13 from the inner side to the outer side in the radial direction so as to be positioned on the back side of the front surface 13A.

  With the rotating body 2 supported by the support portion 12, the protrusion 22 </ b> A of the rotating body 2 faces the groove portion 20 </ b> C of the push button 20 in the axial direction. When the screw portion 20A of the push button 20 is inserted into the through hole 11 of the support body 1 via the inside of the rotating body 2, the protrusion 22A is fitted into the groove portion 20C in the axial direction. The groove 20C is continuous in the circumferential direction on the front end side. After the protrusion 22A reaches the front side end of the groove 20C, when the rotating body 2 is rotated from the release position to the fixed position, the protrusion 22A engages with the groove 20C in the circumferential direction, and the push button 20 is supported by the support 1 Fixed to.

  FIGS. 4A to 4D are perspective views seen from the back side showing the rotation state of the rotating body in the operation switch. When the rotating body 2 is in the fixed position, the side surface on the fixed position side of the lever 21 is in contact with the first contact surface 13B as shown in FIG. The joint portion 13E is elastically engaged. For this reason, the rotating body 2 cannot be rotated toward the release position, and the mounting state of the push button 20 with respect to the support body 1 is reliably maintained.

  When it is necessary to remove the switch 30 from the support 1 during maintenance or replacement work of the operation switch 10, a tool such as a minus driver is inserted between the engaging portion 13E and the operation piece 21A, and the lever 21 and the front surface The lever 21 is pressed toward the front side toward the gap provided between the terminal 13A and the front side. As a result, as shown in FIG. 4B, the lever 21 is elastically deformed to the front side, and the locking piece 21B is not engaged with the engaging portion 13E.

  Therefore, when the lever 21 is rotated until the side surface on the release position side of the lever 21 contacts the second contact surface 13C as shown in FIG. 4D via the state shown in FIG. The rotating body 2 moves to the release position, and the push button 20 can be pulled out from the support body 1 to the front side.

  While the lever 21 is moved from the state shown in FIG. 4B to the state shown in FIG. 4D, an excessive force may act on the lever 21 toward the front side through a tool or the like. Even in this case, since the front surface 13A of the guard portion 13 is located on the front surface side of the lever 21, the lever 21 is not excessively deformed by contact with the front surface 13A, and plastic deformation or breakage may occur. Absent.

  5 (A) and 5 (B) are front views of the support and the rotating body constituting the component mounting structure of the present invention. In a state where the rotating body 2 is attached to the support body 1, the guard portion 13 includes the outer end of the front surface of the lever 21 in the radial direction of the rotating body 2 between the fixed position and the release position of the rotating body 1. Located in.

  That is, when the rotating body 2 is in the fixed position shown in FIG. 5A, the upper ends of the front surface 13 </ b> A and the first contact surface 13 </ b> B of the guard portion 13 are positioned above the upper end of the lever 21. When the rotating body 2 is in the release position shown in FIG. 5B, the upper ends of the front surface 13 </ b> A and the second contact surface 13 </ b> C of the guard portion 13 are located above the upper end of the lever 21.

  Therefore, a part of the operator's body, a tool, a cord, or the like does not directly contact the grip portion of the lock lever. For this reason, the lock lever does not move from the fixed position to the release position due to an external force unintended by the operator, and prevents malfunction of the device due to incomplete mounting of the two components. be able to. In particular, even when an impact due to a drop occurs on the front surface 13A side, the impact is not directly applied to the lever 21 due to a gap provided between the lever 21 and the front surface 13A, so that the lever 21 is prevented from being damaged. be able to.

  In addition, regardless of whether or not the push button 20 and the switch 30 are attached to the support 1, when the support 1 to which the rotating body 2 is attached falls on the floor or the like, the lever 21 contacts the floor or the like. There is no contact. For this reason, the impact caused by the drop does not directly act on the lever 21, and the lever 21 can be prevented from being damaged.

  The above embodiments are merely examples, and the present invention is not limited to these embodiments, and various modifications can be made within the scope of the present invention. For example, another part of the present invention is not limited to the push button 20, but may be an indicator lamp or an operation key. Further, instead of the switch 30 which is a contact part, a power feeding part such as a terminal block may be mounted on the back surface of the support 1.

  Moreover, the guard part 13 should just be located in the range containing a part of outer side end of the lever 21 about the radial direction of the rotary body 2, and does not necessarily need to be located in the outer side end of the front surface. For example, even when the guard portion 13 is formed only at the radially outer end of the side surface of the lever 21, the lever 21 can be protected from an external force acting from the side surface and an external force acting from the outside in the radial direction.

(A) And (B) is an external view from the front side and back side of the operation switch to which the component mounting structure which concerns on embodiment of this invention is applied. It is an assembly drawing seen from the front side of the operation switch. It is an assembly drawing seen from the back side of an operation switch. (A)-(D) are the perspective views seen from the back side which show the rotation state of the rotary body in an operation switch. (A) And (B) is a front view of the support body and rotary body which comprise the component attachment structure of this invention.

Explanation of symbols

1: Support body 2: Rotating body 10: Operation switch 13: Guard part 13A: Front surface 13B: First contact surface 13C: Second contact surface 13D: Opening portion 13E: Engagement portion 20: Push button (separate) parts)
21: Lever 30: Switch

Claims (4)

The support is rotatable between a support body on which another part is detachably mounted from the front side, a fixed position for fixing the mounting state of the separate part with respect to the support body, and a release position for releasing the mounting state. A rotating body supported by the body,
The rotating body is integrally provided with a lever extending in a radial direction from a part of the peripheral edge thereof,
The support is integrally provided with a guard portion located in a range including the outer end of the lever in the radial direction between the fixed position and the release position of the rotating body. Construction. The support is rotatable between a support body on which another part is detachably mounted from the front side, a fixed position for fixing the mounting state of the separate part with respect to the support body, and a release position for releasing the mounting state. A rotating body supported by the body,
The rotating body is integrally provided with a lever that extends in a radial direction from a part of a peripheral portion thereof and is elastically displaceable in a direction different from the rotating direction of the rotating body,
The support is formed by integrally forming a guard portion located in a range including the outer end of the front surface of the lever in the radial direction between the fixed position and the release position of the rotating body. Mounting structure.   The component mounting structure according to claim 2, wherein the guard portion includes an engaging portion that elastically engages the lever when the rotating body is in the fixed position.   The guard portion includes a first contact surface that contacts a side surface of the lever on the fixed position side when the rotating body is in the fixed position, and the release of the lever when the rotating body is in the release position. The component mounting structure according to any one of claims 1 to 3, further comprising a second contact surface that contacts the side surface on the position side.

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