JP6281173B2 - Axis adjustment unit built into the wiring device - Google Patents

Description

  The present invention provides a wiring device provided between a power source and a load and having a function of controlling the load by adjusting a resistance value by a variable resistor provided therein, and a rotating shaft of the variable resistor incorporated in the device. The present invention relates to an axis adjustment unit for rotating operation.

As this type of wiring device, for example, a switch having a timer function or a dimming function is known. This type of conventional wiring device incorporates a variable resistor with a built-in on / off switch mechanism, and rotates the rotating shaft of the variable resistor to turn on and off the conduction state between the load and the power source. With the adjustment of the resistor by the variable resistor, the conductive state between the load and the power source can be turned off after a certain time has elapsed, or the brightness of the illumination (load) can be changed.
As a variable resistor to be incorporated in this type of wiring apparatus, conventionally, a resistor (RV16_P15F0B503M) standard (conventional product) shown in Annex 1 of Japanese Industrial Standard JIS C 5260-1 has been generally used. This conventional variable resistor has been widely used in wiring devices such as timer switches and dimmers, as well as power switches with volume control function for cathode ray tube TV receivers and audio equipment. Such a conventional variable resistor has a feature that the size of the resistor body is large due to the built-in on / off switch mechanism, and the rotational torque with respect to the rotating shaft for adjusting the resistance value is large, so that a solid operational feeling can be obtained. there were.
However, in recent years, television receivers and audio equipment have been widely used in configurations in which power on / off operations and volume adjustment are executed by an electronic control circuit, and accordingly, a conventional variable that incorporates the above-described on / off switch mechanism. Resistor demand has drastically decreased, and production has stopped. At present, a new standard variable resistor (for example, RV09_P15F0B503M shown in Annex 1 of Japanese Industrial Standard JIS C 5260-1) that does not incorporate an on / off switch mechanism is provided as an alternative.

Now, although there is a conventional variable resistor (conventional product) for which demand for television receivers and audio equipment has drastically decreased, there is still demand for wiring devices. However, under the present situation where production is stopped and inventory remains, a new standard variable resistor (alternative) that does not have an on / off switch mechanism must be applied to wiring equipment.
Therefore, the present applicant has already proposed a wiring apparatus incorporating a new standard variable resistor (alternative) that does not incorporate an on / off switch mechanism (see Patent Document 1). The previously proposed wiring appliance has been newly developed in accordance with the new standard variable resistor (alternative), such as the case dimensions and the arrangement of components incorporated therein.

However, in addition to the components housed in the case, there are other related parts such as mounting frames on the wall of the house. If these related parts can maintain compatibility with conventional products, the production of parts is possible. Planning and inventory management are easy and preferable. In order to maintain the compatibility of these related parts, it is necessary to make the case body and the cover body constituting the outer shape of the wiring device have the same size and shape as the conventional one.
However, when using a new standard variable resistor (substitute product), a difference in size from the conventional variable resistor (conventional product) becomes a problem. That is, the conventional variable resistor (conventional product) incorporating the on / off switch mechanism has a larger size of the resistor body, and thus the height dimension from the bottom surface of the resistor body to the tip of the rotating shaft is significantly different. .
In addition, the new standard variable resistor (alternative) that does not have an on / off switch mechanism has a smaller rotational torque for the rotating shaft for adjusting the resistance value than the conventional variable resistor (conventional product). There was a feeling of discomfort due to lack of profound feeling.

Japanese Patent No. 3705824

The present invention has been made in view of the above-described circumstances, and it is possible to use related parts such as the same mounting frame as before while using a new standard variable resistor (alternative) that does not have an on / off switch mechanism. The purpose is to provide a wiring device that can be used.
In addition, using a new standard variable resistor (alternative) that does not have an on / off switch mechanism, the operation feels as heavy as a conventional variable resistor (conventional product) that has an on / off switch mechanism. It aims at provision of the wiring equipment obtained.

In order to achieve the above-described object, the present invention is a wiring device provided between a power source and a load and having a control function for the load,
A case body having an opening, a lid that closes the opening and has a bearing hole formed thereon;
A circuit board housed in the inner bottom of the case body;
A resistor main body with a built-in variable resistor portion and a resistance value setting rotation shaft protruding from the resistor main body, and the resistor main body is mounted on the circuit board and accommodated inside the case body A resistor,
A control circuit that is housed inside the case body in a state mounted on a circuit board and controls a load according to a resistance value set by a variable resistor;
A micro switch that is housed in the case body and electrically connects and disconnects between the power source and the load;
An axis adjustment unit mounted on the tip of the rotary shaft in the variable resistor,
The shaft adjustment unit is adjusted to such a length that the distal end protrudes to the outside through the bearing hole of the lid while the base end is connected to the distal end of the rotating shaft, and a knob for rotation operation can be attached to the distal end. And means for applying sliding resistance to the rotation operation by the knob and means for turning on and off the microswitch at a preset rotation angle.

  The variable resistor used in the present invention having the above-described configuration is a new standard variable resistor (alternative) that does not incorporate an on / off switch mechanism. This type of variable resistor is standardized as, for example, RV09_P15F0B503M in Annex 1 of Japanese Industrial Standard JIS C 5260-1. Such a new standard variable resistor (substitute product) is a conventional variable resistor having an on / off switch mechanism (for example, a conventional product standardized as RV16_P15F0B503M in Annex 1 of JIS C 5260-1). In particular, the height dimension from the bottom surface of the resistor body to the tip of the rotating shaft is small, and the rotational torque with respect to the rotating shaft for adjusting the resistance value is also small.

If the case body and the lid body are the same size and shape as a conventional wiring device incorporating a conventional variable resistor (conventional product), related parts such as the same mounting frame as before can be used. It becomes possible.
However, if the variable resistor built into the case body is a new standard variable resistor (alternative) that does not have an on / off switch mechanism, the height from the bottom of the resistor body to the tip of the rotating shaft is small. For this reason, it is necessary to make adjustments so that the tip of the rotating shaft protrudes outside from the bearing hole of the lid.
Therefore, in the present invention, the shaft adjusting unit is attached to the tip of the rotating shaft in the variable resistor. As described above, the shaft adjustment unit has a structure in which the base end portion is connected to the tip end portion of the rotating shaft, the tip end portion protrudes to the outside through the bearing hole of the lid, and a knob for rotation operation can be attached to the tip end portion. It has been adjusted.

  Further, the shaft adjusting unit includes a means for giving a sliding resistance to the rotating operation by the knob, and the rotational resistance of the variable resistor (substitute product) with respect to the rotating shaft is small due to the sliding resistance. Can be supplemented. As a result, it is possible to obtain a heavy operational feeling equivalent to that of a variable resistor (conventional product) incorporating a conventional on / off switch mechanism.

Furthermore, since the variable resistor (alternative) does not incorporate an on / off switch mechanism, the wiring device of the present invention accommodates a microswitch inside the case body. This micro switch functions as an on / off switch for electrically connecting and disconnecting the power source and the load.
The axis adjustment unit includes means for turning on and off the micro switch at a preset rotation angle, and the micro adjustment via the axis adjustment unit can be performed by rotating the knob (that is, rotating the rotary shaft in the variable resistor). The switch can be turned on and off.

The axis adjustment unit described above is
With the base end connected to the tip of the rotating shaft, the tip protrudes to the outside through the bearing hole of the lid, and the extension shaft is adjusted to such a length that a knob for rotation operation can be attached to the tip. A shaft member including a shaft flange portion formed on the extension shaft portion;
A bearing member including a cylindrical bearing portion inserted into the bearing hole of the lid, and a bearing flange portion formed at the base end edge of the bearing portion;
And a ring-shaped buffer formed in a ring shape having a thickness that can be shrunk by a silicon material having elasticity.

In such a configuration, the ring-shaped shock absorber and the bearing member are fitted from the front end to the extension shaft portion of the shaft member, and the ring-shaped shock absorber is disposed between the shaft flange portion of the shaft member and the bearing flange portion of the bearing member. Further, the bearing portion of the bearing member is inserted and arranged in the bearing hole of the lid, and the extension shaft portion of the shaft member penetrates the hollow portion of the bearing portion.
Here, the ring-shaped buffer body is compressed between the shaft flange portion of the shaft member and the inner wall of the lid body, and constitutes a means for imparting sliding resistance to the rotation operation by the knob. Here, the sliding resistance acts between the bearing flange portion of the bearing member and the inner wall of the lid.
Further, the shaft flange portion of the shaft member is formed with a cam portion that contacts and separates from the microswitch operating element at a preset rotation angle, and this cam portion constitutes a means for turning on and off the microswitch.

  Further, the shaft adjustment unit includes a ring-shaped flat washer, and this flat washer is provided between the bearing flange portion of the bearing member and the inner wall of the lid, or between the ring-shaped buffer member and the bearing flange portion of the bearing member. In addition, the arrangement may be arranged.

As described above, according to the present invention, it is possible to use related parts such as a conventional mounting frame while using a new standard variable resistor (alternative) that does not incorporate an on / off switch mechanism. Become.
In addition, using a variable resistor (alternative) that does not have an on / off switch mechanism, it is possible to obtain a heavy operational feeling equivalent to a conventional variable resistor (conventional product) that has an on / off switch mechanism. it can.

It is a disassembled perspective view of the wiring device which concerns on embodiment of this invention. It is a disassembled perspective view of the wiring device which concerns on embodiment of this invention, and its related components. It is front sectional drawing of the wiring fixture which concerns on embodiment of this invention. (A) is front sectional drawing of the wiring device which concerns on embodiment of this invention, (b) is front sectional drawing of the conventional wiring device incorporating the conventional variable resistor (conventional product). It is a figure which shows the external appearance of the old and new standard variable resistor, The figure (a) is a front view of the new standard variable resistor (alternative product) used by this embodiment, The figure (b) is also a side view, FIG. 3C is a front view of a conventional variable resistor (conventional product), and FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
The wiring device according to the present embodiment is provided between a power source and a load and has a control function for the load.
As shown in FIG. 1, the wiring device includes a case body 10 having an opening, a lid 11 that closes the opening, a circuit board 20 accommodated in an inner bottom portion of the case 10, and the circuit board 20. The variable resistor 30, the control circuit 40, and the micro switch 50 mounted on the rotary resistor 32, and the shaft adjustment unit 60 that is attached to the tip of the rotary shaft 32 in the variable resistor 30.
The case body 10 and the lid body 11 form the outer shape of the wiring device, and as described above, the same size and shape as the conventional wiring device incorporating the conventional variable resistor (conventional product) is used as it is. doing. Thereby, it becomes possible to use related parts, such as a mounting frame same as the past (refer FIG. 2).
The lid body 11 is formed with a bearing hole 11a for rotatably supporting a shaft member 61 described later.

  In the present embodiment, the circuit board 20 is also formed in the same size and shape as that used in the conventional wiring device, and the arrangement of the mounted components is adjusted so that it can be accommodated in the internal space of the case body 10.

The variable resistor 30 uses a new standard variable resistor (alternative) that does not incorporate an on / off switch mechanism. As described above, this type of variable resistor 30 is standardized as, for example, RV09_P15F0B503M in Annex 1 of Japanese Industrial Standard JIS C 5260-1.
FIG. 5 is a diagram showing the external appearance of a new and old standard variable resistor. FIGS. 5A and 5B show a new standard variable resistor (substitute product) used in this embodiment, and FIG. (D) shows a conventional variable resistor (conventional product). Note that the new standard variable resistor 30 (alternative) shown in FIGS. 5A and 5B is standardized as RV09_P15F0B503M in Annex 1 of the Japanese Industrial Standard JIS C 5260-1. (C) The variable resistor 130 (conventional product) shown in (d) is standardized as RV16_P15F0B503M in Annex 1 of the Japanese Industrial Standard JIS C 5260-1.
Each of the variable resistors 30 and 130 includes resistor main bodies 31 and 131 having a built-in variable resistance portion, and resistance value setting rotary shafts 32 and 132 protruding from the resistor main bodies 31 and 131. However, since the conventional variable resistor 130 (conventional product) shown in FIGS. 3C and 3D incorporates an on / off switch mechanism, the height from the bottom surface of the resistor body 131 to the tip of the rotating shaft 132 is high. The dimension H1 is larger than that of the new standard variable resistor 30 (alternative) shown in FIGS. 1A and 1B (H1> H2). In the conventional variable resistor 130 (conventional product) shown in FIGS. 2C and 2D, a screw fastening portion 135 further extends from the boss surface of the resistor main body 131, and the height of the screw fastening portion 135 is increased. The height dimension H1 from the bottom surface of the resistor main body 131 to the tip of the rotating shaft 132 is increased.
Further, the new standard variable resistor 30 (alternative) used in the present embodiment has a feature that the rotational torque with respect to the rotating shaft 32 for adjusting the resistance value is smaller than that of the conventional variable resistor 130 (conventional product). There is. The variable resistor 30 is mounted on the circuit board 20 by soldering lead terminals 33 and support legs 34 extending downward from the resistor body 31 to the circuit board 20.

  Returning to FIG. 1, the control circuit 40 is composed of various electronic components and has a function of controlling the load in accordance with the resistance value set by the variable resistor 30. For example, when the wiring fixture is provided as a dimmer having a function of dimming the lighting fixture (load), the control circuit 40 dims the lighting fixture based on the resistance value set in the variable resistor 30. Configured to dimming circuit. When the wiring device is provided as a timer device, the control circuit 40 is configured as a timer circuit that cuts off the load and the power supply after a lapse of time based on the resistance value set in the variable resistor 30. Since these light control circuits and timer circuits are known circuits, detailed description thereof is omitted.

  A terminal 12 a and a release member 13 for electrically connecting the control circuit 40 mounted on the circuit board 20 to an external load and a power source are incorporated in the inner bottom portion of the case body 10. The terminal 12a is composed of a metal presser spring that constitutes a well-known quick-connection terminal mechanism, and an electric wire inserted from a connection hole formed in the bottom of the case body 10 is connected to the fixed terminal 12b that is incorporated in the circuit board 20. Hold between them elastically. In addition, the electric wire held between the terminal 12a and the fixed terminal 12b can be released from the holding state by sliding the release member 13 with a tool such as a screwdriver.

  The micro switch 50 has a function of electrically connecting / disconnecting the power source and the load. The microswitch 50 is an alternative to the on / off switch mechanism built in the conventional variable resistor 130 (conventional product). As will be described later, an operator serving as an on / off operation unit of the micro switch 50 is turned on / off by a cam portion 61c provided on the shaft adjustment unit 60.

The shaft adjustment unit 60 includes a shaft member 61, a bearing member 62, a flat washer 63, and a ring-shaped buffer body 64.
Among these, the shaft member 61 is formed of a hard resin material, and has each of an extended shaft portion 61a and a shaft flange portion 61b. And as shown in FIG. 3, the base end of the extension shaft part 61a is connected with the front-end | tip part of the rotating shaft 32 in the variable resistor 30. As shown in FIG. Here, in a state where the extension shaft portion 61 a is connected to the rotation shaft 32, the tip portion protrudes to the outside through the bearing hole 11 a of the lid body 11, and has a length that allows the knob for rotation operation to be attached to the tip portion. It has been adjusted. As a result, as shown in FIGS. 4 (a) and 4 (b), the case body 10 and the lid body having the same size and shape as those of the conventional wiring device incorporating the variable resistor 130 (conventional product) (FIG. 4 (b)). 11 can be used, and the compatibility of the related parts such as the mounting frame with the conventional product can be ensured.

  The shaft flange portion 61b is formed at an intermediate position of the extension shaft portion 61a, and a cam portion 61c is formed on the shaft flange portion 61b. The cam portion 61c constitutes an on / off means for the micro switch 50, and is adjusted so as to be in contact with and separated from the operation element of the micro switch 50 at a preset rotation angle. Specifically, when the rotary shaft 32 of the variable resistor 30 is at the rotation angle position where the origin is the origin, the cam portion 61c pushes the operating element and the micro switch 50 is in an off state (a state in which the load and the power source are disconnected). Then, when the rotary shaft 32 of the variable resistor 30 is rotated from the origin, the cam portion 61c is separated from the operating element and the micro switch 50 is in an ON state (a state in which the load and the power source are electrically connected). It has been adjusted so that

  The bearing member 62 has each part of the cylindrical bearing part 62a and the bearing flange part 62b formed in the base end edge. The bearing member 62 is formed of a resin material having a low friction coefficient such as polytetrafluoroethylene (PTFE). Particularly, the inner peripheral surface of the bearing portion 62a and the surface of the bearing flange portion 62b are smooth surfaces having a low friction coefficient. It has become. In the bearing member 62, the bearing portion 62 a is inserted into the bearing hole 11 a of the lid body 11, and the extension shaft portion 61 a of the shaft member 61 is rotatably supported by the peripheral wall in the hollow portion.

  The flat washer 63 is formed in a thin ring shape from a low friction coefficient resin material such as polytetrafluoroethylene (PTFE). Accordingly, both the front and back surfaces of the flat washer 63 are smooth surfaces having a low friction coefficient.

  The ring-shaped buffer body 64 is formed in a ring shape having an elastic sponge shape and a shrinkable thickness. Specifically, the ring-shaped buffer body 64 is formed of a silicon material having good weather resistance and elasticity such as silicon foam and low hardness silicon rubber.

As shown in FIG. 1, the components constituting the above-described shaft adjustment unit 60 are fitted into the extension shaft portion 61 a of the shaft member 61 from the tip portion in the order of the ring-shaped buffer body 64, the bearing member 62, and the flat washer 63. . Thereby, the ring-shaped buffer body 64 is sandwiched between the shaft flange portion 61 b of the shaft member 61 and the bearing flange portion 62 b of the bearing member 62, and the bearing flange portion 62 b of the bearing member 62 and the inner wall of the lid body 11 are sandwiched. A flat washer 63 is disposed therebetween.
Next, in the state where the bearing portion 62a of the bearing member 62 is inserted into the bearing hole 11a of the lid 11 and the extension shaft portion 61a of the shaft member 61 is passed through the hollow portion of the bearing portion 62a, the case body 10 The lid 11 is attached to the opening.

Next, a procedure for mounting related parts such as a mounting frame will be described with reference to FIG.
As related parts of the wiring device according to the present embodiment, there are an attachment frame 70, a heat radiating plate 71, a plate attachment frame 72, and the like. The case body 10 of the wiring device is attached to the mounting frame 70 by a fastening screw 73. Here, in the present embodiment shown in FIG. 2, an aluminum flange piece 71 a is incorporated in the circuit board 20 in order to dissipate heat from the heat-generating component incorporated in the circuit board 20 in the case body 10. The heat radiating plate 71 is attached to the flange piece 71a by a fastening screw 71b. The plate mounting frame 72 is fixed to the mounting frame 70 by fastening screws 74. The rotary operation knob 80 is attached to the distal end portion of the extension shaft portion 61 a of the shaft member 61 via a felt washer 81.
As shown in FIG. 3, a resin decorative plate 75 is attached to the plate mounting frame 72 at the construction site. The decorative plate 75 covers the outer periphery of the mounting frame 70 and the plate mounting frame 72. These parts (related parts) of the mounting frame 70, the heat radiating plate 71, the plate mounting frame 72, and the decorative plate 75 can be the same as those applied to conventional wiring devices.

As shown in FIG. 3, in the wiring device in which each component is incorporated, the ring-shaped buffer body 64 constitutes means for imparting sliding resistance to the rotation operation by the knob 80. In other words, the ring-shaped buffer body 64 is compressed between the shaft flange portion 61 b of the shaft member 61 and the lid body 11, and the bearing flange portion 62 b of the bearing member 62 and the flat washer 63 against the rotation operation by the knob 80. Sliding resistance is given between the two. As a result, it is possible to obtain a heavy operational feeling equivalent to that of the variable resistor 130 (conventional product) incorporating the conventional on / off switch mechanism.
When the knob 80 is rotated, the compressed ring-shaped buffer body 64 and the bearing member 62 in contact with the ring-shaped buffer body 64 rotate together with the shaft member 61, but a flat washer is provided between the bearing member 62 and the lid body 11. 63, and the contact surfaces of the flat washer 63 and the bearing member 62 are formed as smooth surfaces having a low friction coefficient, so that the bearing member 62 can rotate smoothly with little frictional resistance.

In addition, this invention is not limited to embodiment mentioned above, Of course, various deformation | transformation implementation and application implementation are possible as needed.
For example, in the above-described embodiment, the flat washer 63 is disposed between the bearing flange portion 62b of the bearing member 62 and the inner wall of the lid body 11, but the flat washer 63 may be omitted. In that case, a sliding resistance acts between the bearing flange portion 62 b of the bearing member 62 and the inner wall of the lid 11. Further, the flat washer 63 may be disposed between the bearing flange portion 62 b of the bearing member 62 and the ring-shaped buffer body 64.
Further, in the above-described embodiment, the ring-shaped buffer body 64 and the bearing flange portion 62b of the bearing member 62 can be bonded together by an adhesive means such as a double-sided tape to form an integral part.

10: Case body, 11: Cover body, 11a: Bearing hole, 12a: Terminal, 12b: Fixed terminal, 13: Release member,
20: circuit board,
30: Variable resistor, 31: Resistor body, 32: Rotating shaft, 33: Lead terminal, 34: Support leg,
40: control circuit,
50: Micro switch,
60: shaft adjustment unit, 61: shaft member, 61a: extension shaft portion, 61b: shaft flange portion, 61c: cam portion, 62: bearing member, 62a: bearing portion, 62b: bearing flange portion, 63: flat washer, 64 : Ring-shaped buffer,
70: mounting frame, 71: heat sink, 72: plate mounting frame, 75: decorative plate,
80: Pick, 81: Washer

Claims (10)

A wiring device provided between a power source and a load and having a control function for the load,
A case body having an opening, a lid that closes the opening and has a bearing hole formed thereon;
A circuit board housed in the inner bottom of the case body;
A resistor main body including a variable resistor portion and a resistance value setting rotation shaft protruding from the resistor main body, and the resistor main body is accommodated in the case body in a state of being mounted on the circuit board. With variable resistor,
A control circuit that is housed inside the case body in a state of being mounted on the circuit board and controls the load according to a resistance value set by the variable resistor ,
The variable resistor has an old standard and a new standard, and the old standard has a larger height dimension from the bottom of the resistor body to the tip of the rotating shaft than the new standard, and the old standard The thing has a built-in on-off switch mechanism in the resistor body,
The case body, the lid body, and the circuit board are sized and configured to incorporate the old standard variable resistor, and the new standard variable resistor is also incorporated into the common case body, lid body, and circuit board. With configuration,
A micro switch that is housed inside the case body together with the new standard variable resistor, and that electrically connects and disconnects the power source and the load,
Further and an axial adjustment unit attached to the distal end portion of the rotary shaft in the variable resistor of the new standard,
The shaft adjusting unit has a length that allows the distal end portion to protrude outside through the bearing hole of the lid body with the base end portion connected to the distal end portion of the rotating shaft, and a knob for rotation operation can be attached to the distal end portion. A wiring device comprising: means for adjusting a sliding resistance to rotation operation by the knob; and means for turning on and off the microswitch at a preset rotation angle. The axis adjustment unit is
With the base end connected to the tip of the rotating shaft, the tip protrudes to the outside through the bearing hole of the lid, and the extension is adjusted to such a length that a knob for rotation operation can be attached to the tip. A shaft member including a shaft portion and a shaft flange portion formed on the extended shaft portion;
A bearing member including a cylindrical bearing portion inserted into the bearing hole of the lid, and a bearing flange portion formed on a base end edge of the bearing portion;
A ring-shaped buffer formed in a ring shape having a thickness that can be shrunk by a silicon material having elasticity, and
The ring-shaped shock absorber and the bearing member are fitted into the extension shaft portion of the shaft member from the tip portion, and the ring-shaped shock absorber is disposed between the shaft flange portion of the shaft member and the bearing flange portion of the bearing member. Further, the bearing portion of the bearing member is inserted and arranged in the bearing hole of the lid, and the extension shaft portion of the shaft member penetrates the hollow portion of the bearing portion,
And the said ring-shaped buffer is compressed via the bearing flange of the said bearing member between the axial flange part of the said shaft member, and the inner wall of the said cover body, and slides with respect to the rotation operation by the said knob | pick. Constitutes means to impart resistance,
Further, the shaft flange portion of the shaft member is formed with a cam portion that contacts and separates from the microswitch operator at a preset rotation angle, and the cam portion is configured to turn on and off the microswitch. The wiring device according to claim 1.   The wiring device according to claim 2, further comprising a ring-shaped flat washer, wherein the flat washer is disposed between a bearing flange portion of the bearing member and an inner wall of the lid.   3. The wiring device according to claim 2, further comprising a ring-shaped flat washer, wherein the flat washer is disposed between the ring-shaped cushion and the bearing flange portion of the bearing member. The load is a lighting fixture;
5. The wiring device according to claim 1, wherein the control circuit is a dimming circuit that dims the load based on a resistance value set in the variable resistor. 6.   The said control circuit is a timer circuit which interrupts | blocks between the said load and a power supply after the time based on the resistance value set to the said variable resistor is passed. Wiring apparatus as described in. Provided between a power source and a load, having a control function for the load;
A case body having an opening, a lid that closes the opening and has a bearing hole formed thereon;
A circuit board housed in the inner bottom of the case body;
A resistor main body including a variable resistor portion and a resistance value setting rotation shaft protruding from the resistor main body, and the resistor main body is accommodated in the case body in a state of being mounted on the circuit board. With variable resistor,
A control circuit that is housed inside the case body in a state of being mounted on the circuit board and controls the load according to a resistance value set by the variable resistor ,
The variable resistor has an old standard and a new standard, and the old standard has a larger height dimension from the bottom of the resistor body to the tip of the rotating shaft than the new standard, and the old standard The thing has a built-in on-off switch mechanism in the resistor body,
The case body, the lid body, and the circuit board are sized and configured to incorporate the old standard variable resistor, and the new standard variable resistor is also incorporated into the common case body, lid body, and circuit board. With configuration,
A wiring switch that is housed inside the case body together with the new standard variable resistor and electrically connects and disconnects the power source and the load , together with the new standard variable resistor. An axis adjustment unit to be incorporated,
With the base end connected to the tip of the rotating shaft of the variable resistor, the tip protrudes to the outside through the bearing hole of the lid, and a length capable of mounting a knob for rotation operation on the tip A shaft adjusting unit comprising: means for adjusting sliding resistance to rotation operation by the knob; and means for turning on and off the microswitch at a preset rotation angle. With the base end connected to the tip of the rotating shaft, the tip protrudes to the outside through the bearing hole of the lid, and the extension is adjusted to such a length that a knob for rotation operation can be attached to the tip. A shaft member including a shaft portion and a shaft flange portion formed on the extended shaft portion;
A bearing member including a cylindrical bearing portion inserted into the bearing hole of the lid, and a bearing flange portion formed on a base end edge of the bearing portion;
A ring-shaped buffer formed in a ring shape having a thickness that can be shrunk by a silicon material having elasticity, and
The ring-shaped shock absorber and the bearing member are fitted into the extension shaft portion of the shaft member from the tip portion, and the ring-shaped shock absorber is disposed between the shaft flange portion of the shaft member and the bearing flange portion of the bearing member. Further, the bearing portion of the bearing member is inserted and arranged in the bearing hole of the lid, and the extension shaft portion of the shaft member penetrates the hollow portion of the bearing portion,
And the said ring-shaped buffer is compressed via the bearing flange of the said bearing member between the axial flange part of the said shaft member, and the inner wall of the said cover body, and slides with respect to the rotation operation by the said knob | pick. Constitutes means to impart resistance,
Further, the shaft flange portion of the shaft member is formed with a cam portion that contacts and separates from the microswitch operator at a preset rotation angle, and the cam portion is configured to turn on and off the microswitch. The shaft adjustment unit according to claim 7.   9. The shaft adjusting unit according to claim 8, further comprising a ring-shaped flat washer, wherein the flat washer is disposed between a bearing flange portion of the bearing member and an inner wall of the lid.   9. The shaft adjusting unit according to claim 8, further comprising a ring-shaped flat washer, wherein the flat washer is disposed between the ring-shaped shock absorber and a bearing flange portion of the bearing member.

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