JP2023072388A - Electric device and method for connecting substrate of electric device - Google Patents

Abstract

To provide an electric device with which a user can easily change a board when a user wants to change the board.SOLUTION: A connection unit 100 (electric device) includes a housing body 11, and a bottom portion 12 displaceable between a fixed position P1 arranged to be connected to the housing body 11 and a displacement position P2 at least partially separated from the housing body 11. The bottom portion 12 includes a substrate holding portion 121 that holds a first substrate 20. In the connection unit 100, the first substrate 20 held by the substrate holding portion 121 is electrically connected to a second substrate 30 arranged in the housing body 11 when the bottom portion 12 is displaced from the displacement position P2 to the fixed position P1.SELECTED DRAWING: Figure 5

Description

TECHNICAL FIELD The present invention relates to an electrical device and a method of connecting substrates of the electrical device, and more particularly to an electrical device having a housing and a method of connecting substrates of the electrical device.

2. Description of the Related Art Conventionally, an electric device provided with a housing is known (see Patent Document 1, for example).

The above Patent Document 1 discloses a gas alarm device (electrical device) comprising an outer case (outer housing), a front cover lid connected to the outer case so as to be openable and closable, and a gas sensor housed in the outer case. It is A main substrate is arranged inside the outer case. The front cover lid is provided with a display section and an operation section. A display/operation circuit board is arranged inside the front cover lid. The main board of the outer case and the display/operation circuit board of the front cover lid are electrically connected to each other by a flat cable.

Japanese Patent No. 5227728

However, in the gas alarm device described in Patent Document 1, the boards are connected to each other by a flat cable. Therefore, when the user wants to change (replace) the board, the flat cable is used to change the board. Wiring work must be done. Therefore, there is a problem that it is difficult for the user to easily change (replace) the board.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electric device and a method for easily changing the board when a user wants to change the board. The object is to provide a method for connecting substrates of electrical equipment.

In order to achieve the above object, the electrical equipment according to the first aspect of the present invention comprises a housing body, a fixed position arranged in connection with the housing body, and at least a part of the housing body. a displacement portion that can be displaced between the displacement position and the displacement position where the displacement portion has a substrate holding portion that holds the first substrate, and when the displacement portion is displaced from the displacement position to the fixed position, The first substrate held by the substrate holding portion is configured to be electrically connected to the second substrate arranged on the housing body.

In the electric device according to the first aspect of the present invention, as described above, the displacement section has a substrate holding section that holds the first substrate, and when the displacement section is displaced from the displacement position to the fixed position, the substrate holding section The first substrate held by the portion is configured to be electrically connected to the second substrate arranged on the housing body. As a result, the first substrate can be electrically connected to the second substrate simply by moving the displacement portion from the displacement position to the fixed position. There is no need to perform wiring work using wiring such as flat cables. As a result, when the user wants to change (exchange) the first substrate, the first substrate can be easily changed (exchanged).

In the electric device according to the first aspect, preferably, the displacement portion is a bottom portion arranged to be connected to the housing body at a fixed position, and the bottom portion is arranged at a position on the back side of the housing body. It is configured to be displaced to the fixed position by rotating upward about the rotating shaft, and to be displaced to the displaced position by rotating downward. With this configuration, the bottom portion also serves as the displacement portion, so the displacement portion can be provided while suppressing complication of the structure. In addition, the bottom can be displaced to the fixed position or the displaced position with a simple structure in which the bottom is rotated around a rotation shaft arranged on the rear side of the housing body. As a result, the user can more easily perform the work of changing the first substrate.

In this case, preferably, the substrate holding section is configured to hold the first substrate in a substantially vertical posture, the second substrate is arranged in a substantially horizontal posture in the housing body, and the bottom portion is rotated upward from the displaced position to the fixed position, the first substrate held in a substantially vertical posture by the substrate holding portion is electrically connected to the second substrate arranged in a substantially horizontal posture in the housing body. configured to be connected. With this configuration, the first substrate held by the substrate holding portion in a substantially vertical posture is electrically connected to the second substrate arranged in a substantially horizontal posture in the housing body, so that the second substrate is electrically connected to the second substrate. is placed relatively above the housing body, the first substrate and the second substrate can be easily electrically connected.

In the electric device according to the first aspect, preferably, when the displacement portion is displaced from the fixed position to the displaced position while the first substrate is electrically connected to the second substrate, the first substrate and the second substrate are displaced from each other. is configured to maintain electrical connection with the With this configuration, when the displacement portion is displaced from the fixed position to the displacement position, the holding force of the substrate holding portion is strong, unlike the case where the holding state of the first substrate is maintained by the holding force of the substrate holding portion. you don't have to have As a result, when the displacement portion is displaced from the fixed position to the displacement position, the holding force of the substrate holding portion cancels the electrical connection between the first substrate and the second substrate. It is possible to suppress complication of the structure of the part.

The electrical equipment according to the first aspect preferably further includes a front cover detachable from the housing body, and configured so that the first board held by the board holding portion can be accessed with the front cover removed. It is With this configuration, the first substrate held by the substrate holding portion can be accessed by removing the front cover, so that the user can easily change the first substrate held by the substrate holding portion. be able to.

In the electric device according to the first aspect, preferably, a plurality of substrate holding portions are provided, and the plurality of substrate holding portions can hold a plurality of types of first substrates. With this configuration, since a plurality of substrate holding portions are provided, the first substrate can be added later to the substrate holding portion that does not hold the first substrate among the plurality of substrate holding portions. . Also, when the first board is added later, the first board can be easily electrically connected to the second board simply by moving the displacement portion from the displacement position to the fixed position. Moreover, since a plurality of types of first substrates can be held by a plurality of substrate holding portions, the user can cause the substrate holding portion to hold a desired type of first substrate among the plurality of types of first substrates. As a result, a desired function corresponding to the first substrate can be exhibited. In addition, in electrical equipment in which the first substrate may be changed (replaced) or added in order to exhibit desired functions according to the first substrate, the first substrate can be easily electrically connected to the second substrate. It is particularly advantageous to be able to connect to

In order to achieve the above object, a method for connecting substrates of an electric device according to a second aspect of the present invention includes a fixed position arranged to be connected to a housing body, and at least a part of the housing body. displacing to the displacement position a displacement portion capable of being displaced between the displacement position and the displacement position separated from each other; causing a substrate holding portion of the displacement portion to hold the first substrate at the displacement position; A step of electrically connecting the first substrate held by the substrate holding portion to the second substrate arranged in the housing body by displacing the displacement portion holding the first substrate from the displacement position to the fixed position; And prepare.

According to the second aspect of the present invention, in the method for connecting boards of an electric device, as described above, by displacing the displacing portion in which the first board is held by the board holding part from the displacement position to the fixed position, A step of electrically connecting the first substrate held by the unit to the second substrate disposed on the housing body is provided. Thus, in the same manner as in the electrical equipment according to the first aspect, when the user wants to change (replace) the first substrate, the substrate connection of the electrical equipment allows the user to easily change (replace) the first substrate. can provide a method.

According to the present invention, as described above, when a user wants to change the board, the board can be changed easily.

1 is a perspective view of a gas detection system according to one embodiment; FIG. FIG. 4 is a perspective view showing a connection unit according to one embodiment; FIG. 4 is an exploded perspective view showing a connection unit according to one embodiment; FIG. 10 is a diagram illustrating a state in which the bottom of the connection unit is displaced to a fixed position according to one embodiment; FIG. 10 is a diagram illustrating a state in which the bottom portion of the connection unit is displaced to the displaced position according to one embodiment; FIG. 4 is a perspective view of the bottom of the connection unit according to one embodiment; 1 is a perspective view (1) showing a housing body of a connection unit according to an embodiment; FIG. It is a perspective view (2) which showed the housing|casing main body of the connection unit by one Embodiment. FIG. 4 is a perspective view showing the front cover of the connection unit according to one embodiment; It is the figure which showed the state which the bottom part of the connection unit by the modification displaced to the displacement position.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

A configuration of a gas detection system 200 including a connection unit 100 according to one embodiment will be described with reference to FIG. In addition, the connection unit 100 is an example of "electrical equipment" in the scope of claims.

(Configuration of gas detection system)
A gas detection system 200 shown in FIG. 1 is a system that captures the atmosphere of a monitored environment and detects a detection target gas contained in the atmosphere. The gas detection system 200 has a function of notifying that a high-concentration detection target gas has been detected when the concentration of the detection target gas in the sampling gas is higher than or equal to a preset value. The gas to be detected is not particularly limited, but is a gas that requires monitoring, such as a gas that is toxic to the human body or a combustible gas.

Gas detection system 200 is installed, for example, in a factory or the like that uses a gas to be detected. As an example, the gas detection system 200 is installed in a semiconductor manufacturing factory to detect leakage of combustible gases such as semiconductor material gas and hydrogen gas. In this case, the monitored environment from which the gas is sampled is, for example, the location where the gas supply device is installed, the exhaust duct, the work area of the worker, and the like.

As shown in FIG. 1 , the gas detection system 200 includes a main unit 210 , multiple (three) gas detection units 220 , and a connection unit 100 . The gas detection unit 220 and the connection unit 100 are units having different configurations from the main unit 210 and are units for expanding the function of the main unit 210 .

The main unit 210, the plurality of gas detection units 220, and the connection unit 100 are arranged side by side and linked together so that they can communicate with each other. In the example of FIG. 1, the main unit 210, the plurality of gas detection units 220, and the connection unit 100 have similar external shapes. Specifically, the main unit 210, the plurality of gas detection units 220, and the connection unit 100 all have a rectangular parallelepiped housing and a vertically long (up and down) rectangular front surface. The main unit 210, the plurality of gas detection units 220, and the connection unit 100 are linearly arranged in the width direction (horizontal direction). The main unit 210, the plurality of gas detection units 220, and the connection unit 100 are fixed to a wall surface or the like at the installation location via mounting members at their rear surfaces.

The main unit 210 has a control section 211 , a gas detection section 212 and a display section 213 . The gas detection unit 212 detects a detection target gas contained in the sampling gas. The control unit 211 acquires the gas detection result (detected gas concentration) by the gas detection unit 212 . The main unit 210 is configured to perform gas detection determination processing by the gas detection unit 212 by the control unit 211 and display the gas detection result on the display unit 213 .

The gas detection unit 220 has a control section 221 and a gas detection section 222 . The gas detection unit 222 detects a detection target gas contained in the sampling gas. The detection target gas of the gas detection unit 222 may be the same as or different from the detection target gas of the gas detection unit 212 . The control section 221 communicates with the control section 211 of the main unit 210 . The control section 221 transmits the output signal of the gas detection section 222 to the control section 211 of the main unit 210 . The control section 211 of the main unit 210 is configured to acquire the output signal of the gas detection section 222 and perform gas detection determination processing of the gas detection unit 220 .

Note that the gas detection unit 220 that detects the same gas as the detection target gas of the gas detection unit 212 has an extended function of increasing the number of gas detection units compared to the main unit 210 . The gas detection unit 220, which detects a gas different from the detection target gas of the gas detection unit 212, has an extended function of increasing the types of gases that can be simultaneously detected with respect to the main unit 210. FIG.

The connection unit 100 has connections for inputting and/or outputting signals. The connection section is a signal input terminal or output terminal connected to an external device. The connection unit 100 has extended functions for the main unit 210 such as increasing the maximum number of connections for signal input, increasing the maximum number of connections for signal output, or increasing the number of types of connectable interfaces. have.

The main unit 210 is configured to perform signal input processing or output processing with an external device connected to the connection unit 100 . The connection unit 100 is connected to, for example, a plurality of annunciators as external devices, and the main unit 210 outputs a signal to each of the annunciators via the connection unit 100 . Connection unit 100 is connected to, for example, a plurality of gas detectors as external devices, and main unit 210 receives signal inputs from the respective gas detectors via connection unit 100 .

(Configuration of connection unit)
Next, a detailed configuration of the connection unit 100 will be described with reference to FIGS. 2 to 9. FIG.

As shown in FIGS. 2 and 3, the connection unit 100 includes a housing 10. As shown in FIG. A first substrate 20 , a second substrate 30 , and a third substrate 40 are accommodated in the housing 10 .

The first board 20 is a board for extending the function of the main unit 210 . The first substrate 20 may be any one of multiple types of substrates.

One of the plurality of types of first substrates 20 is an analog input substrate. The analog input board has a plurality of input connections for analog output signals (4-20 mA analog signals). For example, a gas detector as an external device is connected to the analog input substrate, and an analog output signal, which is a gas detection signal, is input from each gas detector. The control unit 211 of the main unit 210 performs gas detection determination processing on signals from each gas detector acquired via the analog input board.

One of the plurality of types of first substrates 20 is a contact output substrate. The contact output substrate includes a plurality of contact signal output connection portions. For example, an alarm device (an alarm buzzer, an alarm lamp, etc.) is connected as an external device to the contact output board. The control section 211 of the main unit 210 can activate each annunciator by outputting a contact signal to those control devices via the contact output board.

One of the multiple types of first substrates 20 is an analog output substrate. The analog output board includes a plurality of analog signal output connection portions. The analog output board is connected to, for example, an analog input compatible host system or a signal processing device as an external device. The controller 211 of the main unit 210 performs processing for outputting the detected gas concentration signal as a 4-20 mA analog signal to those devices via the analog output board.

One of the multiple types of first substrates 20 is a digital communication substrate. The digital communications board includes a digital communications connection. The digital communication connection section of the digital communication board is an interface different from the communication interface provided in the main unit 210 . For example, while the main unit 210 is an interface using an RJ-45 connector and performs communication conforming to Ethernet (registered trademark) or Modbus (registered trademark)/TCP, the digital communication board uses RS-485 It is a connection unit for digital communication using a connector, and performs communication conforming to Modbus (registered trademark)/RTU. As a result, the control section 211 of the main unit 210 can perform digital communication with a host system that employs an interface not provided in the main unit 210 via the digital communication board.

The second substrate 30 is the base substrate for power supply and communication. The second board 30 supplies power supplied from the main unit 210 to the first board 20 and the third board 40 . The second board 30 communicably connects the main unit 210 and the first board 20 .

The third substrate 40 is an LED substrate on which LEDs (light emitting diodes) are mounted. The third substrate 40 is configured to light an indicator 133, which will be described later, with an LED.

<Construction of housing>
The housing 10 includes a housing body 11 , a bottom portion 12 and a front cover 13 . The bottom part 12 is attached to the housing body 11 . The front cover 13 is detachably attached to the housing body 11 . In addition, the bottom part 12 is an example of the "displacement part" of a claim.

The housing body 11 constitutes a rear cover of the housing 10 . The housing body 11 is configured such that the rear surface 111 can be attached to an attachment surface such as a wall surface via an attachment member. The housing body 11 has a substantially rectangular parallelepiped shape. The housing body 11 has an opening 11a (see FIG. 7) that opens downward (Z2 direction side), and an opening 11b (see FIG. 7) that opens forward (Y1 direction side). provided in the department. Moreover, the front cover 13 has a substantially rectangular parallelepiped shape. The front cover 13 has an opening 13a (see FIG. 9) that opens downward (Z2 direction side) at the bottom, and an opening 13b (see FIG. 9) that opens rearward (Y2 direction side) at the rear. is provided. Further, the front cover 13 is attached to the housing body 11 so that the opening 11b of the housing body 11 and its own opening 13b are connected in the front-rear direction (Y direction).

The bottom portion 12 constitutes the bottom surface of the housing 10 . The bottom portion 12 is arranged across the housing body 11 and the front cover 13 . The bottom portion 12 is arranged to block the opening 11a (see FIG. 7) of the housing body 11 and the opening 13a (see FIG. 9) of the front cover 13 from below.

Here, in the present embodiment, as shown in FIGS. 4 and 5, the bottom portion 12 has a fixed position P1 connected to the housing body 11 and at least a portion of the bottom portion 12 with respect to the housing body 11. is configured to be displaceable between a displacement position P2 at which is spaced apart. Also, the bottom portion 12 has a substrate holding portion 121 that holds the first substrate 20 . In the connection unit 100, when the bottom portion 12 is displaced from the displacement position P2 to the fixed position P1, the first substrate 20 held by the substrate holding portion 121 is electrically connected to the second substrate 30 arranged in the housing body 11. configured to be connected It should be noted that electrically connecting the first substrate 20 to the second substrate 30 means that the connector 21 of the first substrate 20 is electrically connected to the connector 31 of the second substrate 30 . The connector 21 of the first substrate 20 can be directly connected to the connector 31 of the second substrate 30 when the bottom portion 12 is displaced from the displacement position P2 to the fixed position P1. The fixed position P1 is a position where the bottom portion 12 is connected to the opening portion 11a of the housing body 11 and the bottom portion 12 closes the opening portion 11a. Further, the displacement position P2 is a position where at least a portion of the bottom portion 12 is separated from the opening portion 11a of the housing body 11 and the bottom portion 12 does not block at least a portion of the opening portion 11a.

As shown in FIGS. 4 to 6, the bottom portion 12 includes a board holding portion 121, a shaft engaging portion 122, a fixed position engaging portion 123, an operating lever 124, a displacement position engaging portion 125, and a wiring insertion portion. It has a portion 126 and a guide portion 127 .

The substrate holding portion 121 is configured by a slot-shaped groove extending in the front-rear direction (Y direction). The substrate holding portion 121 is formed so as to be recessed downward (Z2 direction side). By inserting the lower end of the first substrate 20 into the groove, the substrate holding part 121 holds the lower end of the first substrate 20 from the left-right direction side (X direction side) and supports it from below (Z1 direction side). is configured to Further, the substrate holding portion 121 is configured to hold the first substrate 20 in a substantially vertical posture along the vertical direction (Z direction) by holding together with the rear-side positioning portion 115 described later. Further, the substrate holding portion 121 is formed on the back side (Y2 direction side) so that the first substrate 20 is accommodated in the housing body 11 .

Further, in this embodiment, a plurality (two) of substrate holding portions 121 are provided. As described above, a plurality of types of first substrates 20 can be held by the plurality of substrate holding portions 121 . The plurality of substrate holders 121 are spaced apart in the left-right direction (X direction). 3 to 5 show examples in which the first substrate 20 is held by one of the plurality of substrate holding portions 121. FIG.

The shaft engaging portion 122 is configured to rotatably engage with a rotating shaft 112 extending in the left-right direction (X direction) formed in the lower portion of the rear side (Y2 direction side) of the housing body 11 . . The shaft engaging portion 122 is formed in a notched shape so as to rotatably engage with the rotating shaft 112 . The shaft engaging portions 122 are provided on both sides in the left-right direction and configured to engage with the rotating shafts 112 provided on both sides in the left-right direction.

Further, in the present embodiment, the bottom portion 12 rotates upward (in the Z1 direction) about a rotation shaft 112 arranged on the rear side of the housing body 11, thereby reaching the fixed position P1. It is configured to be displaced to the displaced position P2 by displacing and rotating downward (Z2 direction side).

Further, in this embodiment, the second substrate 30 is arranged in a substantially horizontal posture on the housing body 11 . The connection unit 100 is held in a substantially vertical posture along the up-down direction (Z direction) by the board holding portion 121 when the bottom portion 12 is rotated upward (Z1 direction side) from the displaced position P2 to the fixed position P1. The first substrate 20 is electrically connected to the second substrate 30 arranged in a substantially horizontal posture on the housing body 11 . Specifically, when the bottom portion 12 is rotated upward (Z1 direction side) from the displaced position P2 to the fixed position P1, the connection unit 100 is held by the substrate holding portion 121 in a substantially vertical posture along the vertical direction. The connector 21 attached upward to the first substrate 20 is electrically connected to the connector 31 attached downward to the second substrate 30 arranged in a substantially horizontal posture in the housing body 11. It is configured. When the bottom portion 12 is rotated upward from the displaced position P2 to the fixed position P1, the connector 21 of the first substrate 20 is electrically connected to the connector 31 of the second substrate 30 while moving along the vertical direction. be done.

The connectors 21 and 31 are connectors connected with a floating structure capable of absorbing positional deviation in vertical and horizontal directions (XY directions) substantially perpendicular to the connection direction (Z direction). The connectors 21 and 31 are configured to be connected without any problem even if the position of the connector 21 is slightly displaced. The connector 31 is a male connector, and the connector 21 is a female connector having a floating portion (movable portion) that allows the contact portion with the connector 31 to move.

In addition, in the present embodiment, when the bottom portion 12 of the connection unit 100 is displaced from the fixed position P1 to the displaced position P2 in a state in which the first substrate 20 is electrically connected to the second substrate 30, the first substrate 20 and the second substrate 30 are maintained in electrical connection. That is, after electrically connecting the first substrate 20 to the second substrate 30, the connection unit 100 can rotate the bottom portion 12 downward (Z2 direction side) from the fixed position P1 to the displaced position P2. At least part of the first substrate 20 is detached from the substrate holding portion 121, and the electrical connection between the first substrate 20 and the second substrate 30 is prevented from being broken. The holding force between the connector 21 of the first substrate 20 and the connector 31 of the second substrate 30 is greater than the holding force between the first substrate 20 and the substrate holding portion 121 . Note that FIG. 5 shows the state before the first substrate 20 is electrically connected to the second substrate 30 .

The fixed position engaging portion 123 is provided to stop the bottom portion 12 at the fixed position P1. The fixed position engaging portion 123 is configured to stop the bottom portion 12 at the fixed position P1 by engaging with the engaged portion 113 (see FIG. 7) formed in the lower portion of the housing body 11. . The fixed position engaging portion 123 is configured by a claw portion that protrudes outward in the left-right direction (X direction). In addition, the engaged portion 113 is configured by a claw portion that protrudes inward in the left-right direction. The fixed position engaging portion 123 is configured to be engaged with the engaged portion 113 by being hooked on the engaged portion 113 from above (Z1 direction side). The fixed position engaging portions 123 are provided on both sides in the left-right direction, and are configured to engage with the engaged portions 113 provided on both sides in the left-right direction. Also, the fixed position engaging portion 123 is connected to the operating lever 124 .

The operating lever 124 is a lever operated by the user. The operating lever 124 is cantilevered on the main body of the bottom portion 12 so as to be elastically deformable (flexible) inward in the left-right direction (X direction). When the operating lever 124 is elastically deformed inward in the left-right direction by the user's operation, the fixed position engaging portion 123 connected to the operating lever 124 is moved inward in the left-right direction. Then, the engagement between the fixed position engaging portion 123 and the engaged portion 113 is released, and the bottom portion 12 can be displaced from the fixed position P1 to the displaced position P2. Further, the operation levers 124 are provided on both sides in the left-right direction.

The displacement position engaging portion 125 is provided to stop the bottom portion 12 at the displacement position P2. The displacement position engaging portion 125 is configured to stop the bottom portion 12 at the displacement position P2 by engaging with the engaged portion 114 (see FIG. 7) formed in the lower portion of the housing body 11. . As a result, even when the bottom portion 12 is displaced to the displacement position P2 in a state where the wiring 50 (see FIG. 3), which will be described later, is inserted through the wiring insertion portion 126, it is possible to suppress an excessive load from being applied to the wiring 50. is.

The displacement position engaging portion 125 is configured by a claw portion that protrudes outward in the left-right direction (X direction). In addition, the engaged portion 114 is configured by a stepped portion that protrudes inward in the left-right direction. The displaced position engaging portion 125 is configured to be engaged with the engaged portion 114 by hooking on the engaged portion 114 from above (Z1 direction side). Further, the displacement position engaging portion 125 is formed at a position slightly higher than the fixed position engaging portion 123 (position on the Z1 direction side). As a result, when the bottom portion 12 is displaced to the fixed position P1, the displaced position engaging portion 125 does not engage with the engaged portion 114, and when the bottom portion 12 is displaced to the displaced position P2, displaced position engagement is performed. The portion 125 engages with the engaged portion 114 . Further, the displacement position engaging portion 125 is arranged closer to the rotating shaft 112 side (Y2 direction side) than the fixed position engaging portion 123 is. The displacement position engaging portions 125 are provided on both sides in the left-right direction, and are configured to engage with the engaged portions 114 provided on both sides in the left-right direction.

The wire insertion portion 126 is configured such that the wire 50 (see FIG. 3) connected to the wire connection portion 22 of the first substrate 20 is inserted therethrough. The wire insertion portion 126 is configured by a through hole penetrating through the bottom portion 12 in the vertical direction (Z direction). A wire protection portion 126 a for protecting the wire 50 is arranged in the wire insertion portion 126 . The wire protector 126a is a rubber grommet. The connection unit 100 is configured such that the wiring 50 is pulled out from the inside of the housing 10 to the outside of the housing 10 via the wiring protection portion 126 a of the wiring insertion portion 126 .

The guide portion 127 is configured to guide the movement of the front cover 13 in the front-rear direction (Y direction) when the front cover 13 is attached to or detached from the housing body 11 . The guide portion 127 is formed in a plate shape that protrudes outward in the left-right direction (X direction) and extends in the front-rear direction. The guide portion 127 is configured to guide a rib 131 (see FIG. 9) formed at the bottom inside the front cover 13 . Rib 131 is formed to protrude inward in the left-right direction and extend in the front-rear direction. Further, the guide portion 127 is disposed above the rib 131 (Z1 direction side) so as to face the rib 131 in the vertical direction (Z direction) when the front cover 13 is attached to the housing body 11 . . That is, when the front cover 13 is attached to the housing body 11 and the bottom portion 12 tries to rotate downward (Z2 direction side), the guide portion 127 is caught by the ribs 131 from above, thereby causing the bottom portion 12 to move downward. is configured to restrict the downward rotation of the The guide portion 127 also serves as a regulation portion.

Further, as shown in FIGS. 7 and 8, the housing body 11 is formed with a rear side positioning portion 115 and a front side positioning portion 116 for positioning the first substrate 20 connected to the second substrate 30. It is The rear-side positioning portion 115 is formed in the rear portion of the housing body 11 and is configured by a notch-shaped groove recessed toward the rear side (Y2 direction side). By inserting the rear end portion of the first substrate 20 into the groove, the rear side positioning portion 115 is positioned in the rear direction (Y2 direction) and in the horizontal direction (X direction) of the rear end portion of the first substrate 20. is configured to position the In addition, a plurality of rear-side positioning portions 115 are arranged at intervals in the vertical direction (Z direction). In addition, a plurality (two) of the plurality of rear-side positioning portions 115 are provided so as to correspond to the plurality (two) of the first substrates 20 and the substrate holding portions 121 and are separated from each other in the left-right direction. Further, when the bottom portion 12 is displaced from the displaced position P2 to the fixed position P1 to electrically connect the first substrate 20 to the second substrate 30, the rear side positioning portion 115 and the substrate holding portion 121 move the first substrate together with the substrate holding portion 121. Hold 20.

The front side positioning portion 116 is formed on the upper side of the housing body 11 and is configured by a notch-shaped groove recessed toward the front side (Y1 direction side). By inserting the upper portion of the front end portion of the first substrate 20 into the groove, the front side positioning portion 116 is positioned in the front direction (Y1 direction) and in the horizontal direction (X direction) of the upper portion of the front end portion of the first substrate 20. is configured to locate the position of the A plurality (two) of the front-side positioning portions 116 are provided so as to correspond to the plurality (two) of the first substrates 20 and the substrate holding portions 121 .

Further, in the connection unit 100, when the bottom portion 12 is displaced from the displacement position P2 to the fixed position P1, the first substrate 20 held by the substrate holding portion 121 and the rear side positioning portion 115 is arranged in the front side positioning portion . is configured as follows. That is, in the connection unit 100, when the bottom portion 12 is displaced from the displacement position P2 to the fixed position P1, the lower end portion of the first substrate 20 is inserted into the groove of the substrate holding portion 121 and the rear end portion of the first substrate 20 is inserted into the groove of the substrate holding portion 121. is inserted into the groove of the rear-side positioning portion 115 , the upper portion of the front end portion of the first substrate 20 is inserted into the groove of the front-side positioning portion 116 . Accordingly, when the user connects the wiring 50 to the wiring connection portion 22 of the first substrate 20 after electrically connecting the first substrate 20 to the second substrate 30, the rear side positioning portion 115 and the front side positioning portion 115 are connected. Since the first substrate 20 is positioned by the positioning portion 116, the work of connecting the wiring 50 can be performed while the position of the first substrate 20 is stabilized.

Further, a substrate holding portion 117 that holds the second substrate 30 is formed in the housing body 11 . The substrate holding portion 117 is composed of a groove portion 117 a and ribs 117 b formed in the upper portion of the housing body 11 . The substrate holding portion 117 is configured to support the lower surface of the second substrate 30 from below and arrange the second substrate 30 in a substantially horizontal posture in the housing body 11 . A plurality (two) of connectors 31 are provided on the lower surface of the second substrate 30 so as to correspond to the plurality (two) of the first substrates 20 and the substrate holding portions 121 . A connector 32 electrically connected to the connector 41 (see FIG. 9) of the third substrate 40 is provided on the front portion of the upper surface of the second substrate 30 .

As shown in FIG. 3, the front cover 13 is configured to be detachable from the housing body 11 with the bottom portion 12 displaced to the fixed position P1. The front cover 13 is configured to be removed from the housing body 11 by being slid forward (Y1 direction). The front cover 13 is configured to be attached to the housing body 11 by being slid backward (Y2 direction).

Further, in this embodiment, the connection unit 100 is configured such that the first substrate 20 held by the substrate holding portion 121 can be accessed with the front cover 13 removed. That is, the connection unit 100 is configured such that the first substrate 20 is exposed to the outside by removing the front cover 13 from the housing body 11, and the first substrate 20 held by the substrate holding portion 121 can be accessed. ing.

Further, in the connection unit 100, when the front cover 13 is attached to the housing main body 11, the third substrate 40 arranged on the front cover 13 is electrically connected to the second substrate 30 arranged on the housing main body 11. configured to be connected. The third board 40 being electrically connected to the second board 30 means that the connector 41 of the third board 40 is electrically connected to the connector 32 of the second board 30 . The connector 41 of the third board 40 can be directly connected to the connector 32 of the second board 30 when the front cover 13 is attached to the housing body 11 . In the connection unit 100, when the front cover 13 slides in the rearward direction (Y2 direction), the third board 40 held by the front cover 13 in a substantially horizontal posture is arranged in a substantially horizontal posture on the housing body 11. It is configured to be electrically connected to the second substrate 30 that is mounted. Specifically, when the front cover 13 slides in the rearward direction (Y2 direction), the connection unit 100 includes a connector attached rearward to the third substrate 40 held by the front cover 13 in a substantially horizontal posture. 41 is configured to be electrically connected to a connector 32 attached forward-facing to a second substrate 30 arranged in a substantially horizontal posture on the housing body 11 .

As shown in FIG. 9, the front cover 13 is formed with a substrate holding portion 132 that holds the third substrate 40 . The board holding portion 132 is composed of a groove portion 132a formed in the upper portion of the front cover 13 and ribs. The substrate holding portion 132 is configured to support the lower surface of the third substrate 40 from below and to arrange the third substrate 40 in a substantially horizontal posture on the front cover 13 . A connector 41 electrically connected to the connector 32 (see FIG. 7) of the second substrate 30 is provided at the rear portion of the upper surface of the third substrate 40 .

As shown in FIGS. 2 and 3, a plurality (three) of indicators 133 that are lit by the LEDs of the third board 40 are formed on the front surface of the front cover 13 . A plurality of indicators 133 are configured to notify different states. For example, the plurality of indicators 133 notify the power supply state from the main unit 210 to the first substrate 20 and the communication state of the first substrate 20 by lighting.

(Work for changing the first substrate)
Next, referring to FIGS. 3 to 5, the operation of changing (replacing) the first substrate 20 by the user will be described.

As shown in FIGS. 3 to 5, first, the front cover 13 is removed from the housing body 11. Then, as shown in FIG. Then, the bottom portion 12 is displaced from the fixed position P1 to the displaced position P2. At this time, the state in which the first substrate 20 is connected to the second substrate 30 is maintained. Then, the first substrate 20 is removed through the opening 11a. Then, at the displacement position P2, the new first substrate 20 is held by the substrate holding portion 121 through the opening portion 11a. Then, the bottom portion 12 holding the new first substrate 20 on the substrate holding portion 121 is displaced from the displacement position P2 to the fixed position P1. As a result, the new first substrate 20 held by the substrate holding portion 121 is electrically connected to the second substrate 30 arranged on the housing body 11 . Then, the front cover 13 is attached to the housing body 11 . Thereby, the third board 40 arranged on the front cover 13 is electrically connected to the second board 30 arranged on the housing main body 11 . After that, the work of changing (exchanging) the first substrate 20 by the user is completed. Note that if there is a substrate holding portion 121 that does not hold the first substrate 20 , the user can add the first substrate 20 . The operation of adding the first substrate 20 by the user is the same as the operation of changing the first substrate 20, except that there is no step of removing the first substrate. In addition, the work of changing and adding the first board 20 by the user can be performed with the rear surface 111 of the housing body 11 attached to the mounting surface.

(Effect of this embodiment)
The following effects can be obtained in this embodiment.

In the present embodiment, as described above, the connection unit 100 includes the housing body 11, the fixed position P1 connected to the housing body 11, and at least a portion of the housing body 11. a bottom portion 12 that is displaceable between the displaced position P2 and the spaced apart displacement position P2, the bottom portion 12 having a substrate holding portion 121 that holds the first substrate 20, and the bottom portion 12 being displaced from the displacement position P2 to the fixed position P1. The first substrate 20 held by the substrate holding portion 121 is electrically connected to the second substrate 30 arranged on the housing main body 11 when the first substrate 20 is held by the substrate holding portion 121 .

In addition, the connection method of the board of the connection unit 100 is between a fixed position P1 arranged to be connected to the housing body 11 and a displaced position P2 where at least a part thereof is separated from the housing body 11. a step of displacing the displaceable bottom portion 12 to a displacement position P2; a step of holding the first substrate 20 on the substrate holding portion 121 of the bottom portion 12 at the displacement position P2; By displacing the held bottom portion 12 from the displacement position P2 to the fixed position P1, the first substrate 20 held by the substrate holding portion 121 is electrically connected to the second substrate 30 arranged in the housing main body 11. and connecting.

With the above configuration, the first substrate 20 can be electrically connected to the second substrate 30 simply by moving the bottom portion 12 from the displacement position P2 to the fixed position P1. There is no need to perform wiring work using wiring such as a flat cable in order to electrically connect the As a result, when the user wants to change (replace) the first substrate 20, the first substrate 20 can be easily changed (replaced).

Further, in the present embodiment, as described above, the bottom portion 12 rotates upward about the rotation shaft 112 arranged on the rear side of the housing body 11 to reach the fixed position P1. It is configured to be displaced to the displaced position P2 by displacing and rotating downward. Accordingly, since the bottom portion 12 also serves as the displacement portion, the displacement portion can be provided while suppressing complication of the structure. Further, the bottom portion 12 can be displaced to the fixed position P1 or the displacement position P2 with a simple structure in which the bottom portion 12 is rotated around the rotation shaft 112 arranged at the rear side position of the housing body 11. be able to. As a result, the user can easily change the first substrate 20 .

Further, in this embodiment, as described above, the substrate holding part 121 is configured to hold the first substrate 20 in a substantially vertical posture. A second substrate 30 is arranged in a substantially horizontal posture on the housing body 11 . In the connection unit 100, when the bottom portion 12 is rotated upward from the displaced position P2 to the fixed position P1, the first substrate 20 held in a substantially vertical posture by the substrate holding portion 121 is held substantially horizontally with respect to the housing main body 11. It is configured to be electrically connected to the second substrate 30 arranged in a posture. As a result, the first substrate 20 held by the substrate holding portion 121 in a substantially vertical posture is electrically connected to the second substrate 30 arranged in a substantially horizontal posture in the housing body 11, so that the second substrate The first substrate 20 and the second substrate 30 can be electrically connected easily even when the substrate 30 is arranged at a position relatively above the housing body 11 .

Further, in the present embodiment, as described above, the connection unit 100 is configured such that the bottom portion 12 is displaced from the fixed position P1 to the displaced position P2 while the first substrate 20 is electrically connected to the second substrate 30. , the electrical connection between the first substrate 20 and the second substrate 30 is maintained. Accordingly, unlike the case where the holding state of the first substrate 20 is maintained by the holding force of the substrate holding portion 121 when the bottom portion 12 is displaced from the fixed position P1 to the displacement position P2, the substrate holding portion 121 strongly holds the first substrate 20 . You don't have to force it. As a result, when the bottom portion 12 is displaced from the fixed position P1 to the displaced position P2, the holding force of the substrate holding portion 121 releases the electrical connection between the first substrate 20 and the second substrate 30. In comparison, complication of the structure of the substrate holding part 121 can be suppressed.

Further, in the present embodiment, as described above, the connection unit 100 includes the front cover 13 that can be attached to and detached from the housing body 11, and with the front cover 13 removed, the first substrate holder 121 is held by the substrate holding portion 121. It is configured to allow access to the substrate 20 . As a result, the first substrate 20 held by the substrate holding portion 121 can be accessed by removing the front cover 13, so that the user can easily change the first substrate 20 held by the substrate holding portion 121. It can be carried out.

Further, in this embodiment, as described above, a plurality of substrate holding portions 121 are provided. A plurality of types of first substrates 20 can be held by the plurality of substrate holding portions 121 . Accordingly, since a plurality of substrate holding portions 121 are provided, the first substrate 20 can be added later to the substrate holding portion 121 that does not hold the first substrate 20 among the plurality of substrate holding portions 121 . can. Also, when the first substrate 20 is added later, the first substrate 20 can be easily electrically connected to the second substrate 30 simply by moving the bottom portion 12 from the displacement position P2 to the fixed position P1. can. Further, since a plurality of types of first substrates 20 can be held by a plurality of substrate holding portions 121, a user can hold a desired type of first substrate 20 among the plurality of types of first substrates 20 on substrate holding portion 121. can be made As a result, a desired function corresponding to the first substrate 20 can be exhibited. In addition, in the connection unit 100 in which the first substrate 20 may be changed (replaced) or added in order to exhibit desired functions according to the first substrate 20, the first substrate 20 is replaced with the second substrate 30. It is particularly advantageous to be able to easily electrically connect to .

[Modification]
It should be noted that the embodiments disclosed this time should be considered as examples and not restrictive in all respects. The scope of the present invention is indicated by the scope of claims rather than the description of the above-described embodiments, and includes all modifications (modifications) within the scope and meaning equivalent to the scope of claims.

For example, in the above embodiments, an example of applying the present invention to a connection unit of a gas detection system was shown, but the present invention is not limited to this. The present invention may be applied to electrical equipment other than the connection unit of the gas detection system.

Moreover, although the example which comprises a displacement part by the bottom part was shown in the said embodiment, this invention is not limited to this. The displacement portion may be configured by a top portion or a side portion other than the bottom portion.

In addition, in the above-described embodiment, an example was shown in which the bottom portion (displacement portion) is displaced between the fixed position and the displacement position by rotation about the rotation shaft, but the present invention is not limited to this. do not have. The displacement portion may be displaced between the fixed position and the displacement position by sliding movement or the like other than rotation.

Further, in the above-described embodiment, an example in which the rotation shaft is formed in the housing main body was shown, but the present invention is not limited to this. A pivot shaft may be formed at the bottom. In this case, it is sufficient that the shaft engaging portion is formed in the housing body.

Moreover, in the above-described embodiment, an example in which two substrate holding portions for holding the first substrate are provided has been shown, but the present invention is not limited to this. One or three or more substrate holders that hold the first substrate may be provided.

Further, in the above-described embodiment, an example is shown in which the substrate holding portion that holds the first substrate can hold a plurality of types of first substrates, but the present invention is not limited to this. The substrate holding part that holds the first substrate may be capable of holding only one type of first substrate.

Further, in the above-described embodiment, an example was shown in which the first substrate held in a substantially vertical posture by the substrate holding portion is electrically connected to the second substrate arranged in a substantially horizontal posture in the housing body. , the present invention is not limited to this. As long as the first substrate and the second substrate can be electrically connected, the posture of the first substrate and the posture of the second substrate may be any. For example, the first substrate held in a substantially vertical posture by the substrate holding portion may be electrically connected to the second substrate arranged in a substantially vertical posture in the housing main body, or the substrate holding portion may hold the first substrate in a substantially vertical posture. The first substrate held in a horizontal orientation may be electrically connected to the second substrate arranged in a substantially horizontal orientation in the housing body.

Further, in the above embodiment, when the displacement portion is displaced from the fixed position to the displaced position while the first substrate is electrically connected to the second substrate, the electrical connection between the first substrate and the second substrate is maintained. Although an example in which the state is maintained has been shown, the present invention is not limited to this. In the present invention, when the displacement portion is displaced from the fixed position to the displacement position while the first substrate is electrically connected to the second substrate, the electrical connection between the first substrate and the second substrate is released. may be

Further, in the above-described embodiment, an example is shown in which the first board is a board for function expansion and the second board is a base board for power supply and communication, but the present invention is limited to this. can't The first substrate and the second substrate may be any substrates. Moreover, although the third substrate is the LED substrate in the above embodiment, the third substrate may be any substrate.

Further, in the above embodiment, the connection unit is such that when the bottom portion is rotated upward from the displacement position to the fixed position, the first substrate held by the substrate holding portion in a substantially vertical posture along the vertical direction is attached to the housing. Although an example in which it is configured to be electrically connected to the second substrate arranged in a substantially horizontal posture on the main body has been shown, the present invention is not limited to this. As in the modification shown in FIG. 10, when the bottom portion 12 is rotated upward (Z1 direction side) from the displaced position P2 to the fixed position P1, the connection unit 100 is slightly displaced from the substrate holding portion 121 in the vertical direction. The first substrate 20 held in a substantially vertical posture while being tilted may be electrically connected to the second substrate 30 arranged in a substantially horizontal posture in the housing body 11. . In this case, when the bottom portion 12 is rotated upward from the displaced position P2 to the fixed position P1, the connector 21 of the first substrate 20 is rotated around the rotation shaft 112 while the connector 31 of the second substrate 30 is electrically connected. connected

11 housing main body 12 bottom (displacement part)
13 front cover 20 first board 21 connector 30 second board 31 connector 100 connection unit (electrical equipment)
112 Rotating shaft 121 Substrate holder P1 Fixed position P2 Displaced position

Claims (7)

a housing body;
a displacement part that can be displaced between a fixed position connected to the housing body and a displacement position at least partially separated from the housing body,
The displacement portion has a substrate holding portion that holds the first substrate,
The first substrate held by the substrate holding portion is electrically connected to the second substrate arranged on the housing body when the displacement portion is displaced from the displacement position to the fixed position. configured electrical equipment. the displacement portion is a bottom portion arranged to be connected to the housing body at the fixed position;
The bottom portion is displaced to the fixed position by rotating upward about a rotating shaft arranged at a position on the back side of the housing body, and is displaced to the displaced position by rotating downward. 2. The electrical device of claim 1, wherein the electrical device is configured to displace to . The substrate holding part is configured to hold the first substrate in a substantially vertical posture,
The second substrate is arranged in a substantially horizontal posture on the housing body,
When the bottom portion is rotated upward from the displaced position to the fixed position, the first substrate held in a substantially vertical posture by the substrate holding portion is arranged in a substantially horizontal posture in the housing body. 3. The electrical device of claim 2, configured to be electrically connected to the second substrate. When the displacement portion is displaced from the fixed position to the displacement position while the first substrate is electrically connected to the second substrate, the electrical connection between the first substrate and the second substrate is established. 4. The electrical equipment according to any one of claims 1 to 3, configured to maintain a state. further comprising a front cover detachable from the housing body,
5. The electric device according to claim 1, wherein said first substrate held by said substrate holding portion is accessible in a state in which said front cover is removed. A plurality of the substrate holding portions are provided,
6. The electric device according to claim 1, wherein a plurality of types of said first substrates can be held by a plurality of said substrate holding portions. a step of displacing a displacement part capable of being displaced between a fixed position arranged in connection with a housing body and a displacement position in which at least a portion thereof is separated from the housing body to the displacement position; ,
holding the first substrate at the displacement position by a substrate holding portion of the displacement portion;
By displacing the displacement portion, which holds the first substrate on the substrate holding portion, from the displacement position to the fixed position, the first substrate held by the substrate holding portion is moved to the housing body. and a step of electrically connecting to the arranged second substrate.

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