JP2018182214A - Housing and physical quantity measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing which enables a user to easily perform visual check or work to a device component.SOLUTION: A housing includes: a case 2 which has an opening 23 at one side and stores a terminal board 9; a front surface panel 31 which closes a part of the opening 23 of the case 2; and a lid 4 which can open or close another part of the opening 23 of the case 2. The lid 4 has: an engagement part 41 engaged with the front surface panel 31; a lid body 42 which can rotate relative to the front surface panel 31; an elastic part 43 which connects the engagement part 41 to the lid body 42 and may bend in conjunction with rotation of the lid body 42; and an extension part 44 which is provided extending to the front surface panel side of the lid body 42. The extension part 44 has a seat part 441 which is pressed to the front surface panel 31 by resilience of the elastic part 43 bending when the lid 4 is opened.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a housing and a physical quantity measuring device provided with the same.

As a physical quantity measuring device, there is known a pressure transmitter which is connected to a pipe to be measured, measures a physical quantity such as fluid pressure, and displays or outputs the physical quantity (see Patent Document 1).
In the pressure transmitter of Patent Document 1, a transparent cover for closing the opening of the case and a panel disposed on the inner side of the transparent cover are provided to a bottomed cylindrical case for housing the device components. The panel has a folded plate shape, and a panel (front panel) near the transparent cover and a panel (rear panel) far from the transparent cover are connected in a step-like manner. On the front panel, a display unit for displaying measurement results, operation buttons, and the like are arranged. On the other hand, a terminal block for connecting a cable drawn from the outside is disposed on the rear panel. The operator can visually check the core wire from the cable to the terminal block through the transparent cover.
In a pressure transmitter of such a configuration, it is desirable to provide an openable lid in place of the transparent cover in order to enable not only visual inspection of the terminal block but also wiring work to the terminal block as required. It is rare.

  On the other hand, as a conventional example of a lid which covers a terminal block, there is a terminal cover which can be opened and closed by a hinge pin (see Patent Document 2). In the conventional example of Patent Document 2, the hinge pin provided on the terminal cover is inserted into the support hole provided on the hinge projection of the terminal block main body, and the terminal cover opens and closes around the hinge pin.

  As another conventional example of a lid, there is a terminal block cover that can be opened and closed by using a part of the terminal block cover as a bending portion (see Patent Document 3). In the conventional example of Patent Document 3, a part of the terminal block cover formed of a synthetic resin material is configured as a thin-walled thick-shaped bending portion, and the bending portion functions as a hinge by the function of a hinge. Open and close.

Design No. 1568331 gazette JP, 2006-260829, A Microfilm of JP-A-62-33539 (JP-A-63-141569)

However, when using the terminal cover and terminal block cover of the prior art of patent document 2, 3 grade | etc., As a cover which covers the terminal block of patent document 1, there exist the following problems.
In Patent Document 2, in order to easily turn the terminal cover, it is preferable to provide a play between the bearing hole and the hinge pin. However, in such a configuration, the terminal cover falls in the closing direction or the opening direction with the hinge pin as the rotation center.
In Patent Document 3, the bending portion which is a part of the terminal block cover functions as a hinge, but such a terminal block cover can be easily closed or opened with the bending portion as the rotation center. I will fall down.

As described above, in the physical quantity measuring device disclosed in Patent Document 1, the terminal block for performing the wiring operation is housed in the case. For this reason, if the terminal cover and terminal block cover of the prior art such as Patent Documents 2 and 3 are used as the lid for covering the terminal block of Patent Document 1, the lid is easily pivoted, and the wiring operation to the terminal block is inconvenient. It becomes.
Such a subject is not limited to the physical quantity measuring device having a terminal block as a work target, and is widely common to the housing for housing the device component to be the work target or the visual target.

  An object of the present invention is to provide a housing and a physical quantity measuring device capable of easily visualizing or working on device components.

  The housing according to the present invention has an opening on one side, and a case capable of containing a device component, a front panel closing a part of the opening of the case, and opening and closing another part of the opening of the case A lid capable of connecting the engaging portion engaged with the front panel, a lid main body rotatable relative to the front panel, the engaging portion and the lid main body; An elastic portion which can be bent with the rotation of the lid body, and an extension portion provided to extend from the lid body to the front panel side, the extension portion opening the lid; It has a seat part which presses on the front panel by the restoring force of the elastic part which is bent at the same time.

In the housing of the present invention, the device components housed in the case are generally protected from the outside by the closed lid. The lid is opened when the operator views or works with the device components in the case. Note that the "closed" state does not require the case opening to be completely closed.
When opening the lid, the operator rotates the lid main body around an elastic portion functioning as an elastic hinge and pulls the lid main body away from the front panel. At this time, along with the rotation of the lid body, the elastic portion is bent, while the posture of the extension portion is changed. Then, after the lid body is disposed at a predetermined angle (for example, 90 degrees) with respect to the front panel, when the operator releases the hand, the seat portion which is a part of the extension portion is the opening side of the case than the elastic portion. Can be in contact with the front panel. Thereby, the lid is opened. In addition, the seat part should just be any one part which presses on a front panel when a lid opens among the extension parts.
When the lid is in the open state, a resilient force for resiliently bending generates a restoring force for returning to the original state, and biases the lid body to the opening side of the case. However, at this time, since the extension portion supports the lid main body by the seat portion pushing against the front panel, the lid main body is not pivoted by the urging of the elastic portion. Thus, the lid in the open state can not be closed unintentionally.
Therefore, according to the present invention, visual recognition or work of device components in the case is facilitated.

In the housing of the present invention, the extension preferably has a second seat that presses against the front panel when the lid is closed.
In the present invention, since the posture of the lid in the closed state is maintained, the lid main body is prevented from entering the inside of the case and interfering with the device components. The second seat portion may be any portion of the extension portion that is pressed against the front panel when the lid is closed.

  A physical quantity measuring device according to the present invention is a physical quantity measuring device including the housing, a sensor unit for detecting a physical quantity, and the device component housed in the case, wherein the device component is the physical component measuring device. A circuit unit electrically connected to the sensor unit; and a work target unit electrically connected to the circuit unit, the work target unit being covered by the lid when the lid is closed The method may be exposed to the outside when the lid is opened.

In the physical quantity measuring device of the present invention, the circuit portion and the work target portion housed in the case are generally protected from the outside by the closed lid. The lid is opened when the worker views or works on the work target in the case. The sensor unit may be housed in the case or may be disposed outside the case.
When opening the lid, the operator rotates the lid main body around an elastic portion functioning as an elastic hinge and pulls the lid main body away from the front panel. At this time, along with the rotation of the lid body, the elastic portion is bent, while the posture of the extension portion is changed. Then, after the lid body is disposed at a predetermined angle (for example, 90 degrees) with respect to the front panel, when the operator releases the hand, the seat portion which is a part of the extension portion is the opening side of the case than the elastic portion. Can be in contact with the front panel. Thereby, the lid is opened.
When the lid is in the open state, a resilient force for resiliently bending generates a restoring force for returning to the original state, and biases the lid body to the opening side of the case. However, at this time, since the extension portion supports the lid main body by the seat portion pushing against the front panel, the lid main body is not pivoted by the urging of the elastic portion. Thus, the lid in the open state can not be closed unintentionally.
Therefore, according to the present invention, visual recognition or work of the work target portion in the case becomes easy.

In the physical quantity measuring device according to the present invention, the work target portion has a terminal block electrically connected to a cable passing through the takeout portion of the case and electrically connected to the circuit portion; It is preferable that at least one of a display window for displaying the detection result of the sensor unit and an operation unit for controlling the drive of the circuit unit is disposed on the display surface of the panel.
In the present invention, when the lid is opened, not only the lid is prevented from closing unintentionally, but also the restoring force of the elastic portion acts so that the lid body pivots more than a predetermined angle with respect to the front panel Being suppressed. For this reason, the lid body is maintained at a predetermined angle with respect to the front panel, and the display window and the operating portion disposed on the front panel are not covered by the lid. Therefore, while working on the terminal block, it is possible to easily confirm the information displayed on the display window and operate the operation unit. Thereby, the cable connection work with respect to a terminal block can be performed easily.

In the physical quantity measuring device of the present invention, preferably, the engaging portion, the lid body, the elastic portion, and the seat portion are integrally formed of rubber or a synthetic resin having elasticity.
According to such a configuration, the lid can be easily manufactured.

In the physical quantity measuring device according to the present invention, preferably, the lid main body has a rib formed on a surface which can face the work target portion.
According to such a configuration, since the lid body can be reinforced by the rib, it is easy to stand the lid body at a right angle to the front panel.

In the physical quantity measuring device of the present invention, preferably, the lid main body has a cutout having a shape obtained by cutting out a part of an edge portion close to the opening edge of the case.
According to such a configuration, the lid can be easily opened by putting a finger on the notch and pulling the lid.

It is a perspective view which shows the physical-quantity measuring device concerning one Embodiment of this invention, Comprising: The figure which shows a mode that the lid closed. It is a perspective view showing the physical quantity measuring device concerning the embodiment, and a figure showing a situation where a lid opened. It is a front view which shows the physical quantity measuring device concerning the said embodiment, Comprising: The figure which abbreviate | omits and shows a lid | cover. It is the sectional view on the AA line of FIG. 3, and is a figure which shows a lid. The perspective view which shows the lid | cover of the said embodiment. It is the BB sectional drawing of FIG. 4, Comprising: The figure which abbreviate | omits and shows except a lid | cover and a front panel. (A)-(C) are schematic diagrams for demonstrating a mode that the lid | cover of the said embodiment opens. It is a perspective view which shows the physical-quantity measuring device concerning the modification of the said embodiment, Comprising: The figure which shows a mode that the cover opened.

  A physical quantity measuring device according to an embodiment of the present invention will be described based on the drawings. The physical quantity measuring device of the present embodiment is configured as a pressure measuring device for detecting a pressure.

  As shown in FIGS. 1 to 4, the pressure measurement device 100 according to this embodiment includes a housing 10 having a first case 1, a second case 2, a panel 3 and a lid 4, and a sensor unit 5 that detects pressure. A circuit unit 6 connected to the sensor unit 5, a display unit 7 for displaying the detection result, an operation unit 8 operable by the user, and a terminal block 9 as a work target unit connected to the circuit unit 6 Prepare.

  The first case 1 is a cylindrical member formed of, for example, a metal such as stainless steel. Specifically, the first case 1 includes a large diameter cylindrical portion 11, a small diameter cylindrical portion 12, a connecting cylindrical portion 13 connecting the large diameter cylindrical portion 11 and the small diameter cylindrical portion 12, and the large diameter cylindrical portion 11. And the flange portion 14 connected.

The second case 2 corresponds to the case of the present invention, and is, for example, a bottomed cylindrical member formed of a metal such as stainless steel. Specifically, the second case 2 has a cylindrical portion 21 disposed so that the axial direction is orthogonal to the first case 1 and an opening on one side of the cylindrical portion 21 (rear side of the pressure measuring device 100) And a bottom 22 closing the In other words, the second case 2 has the opening 23 on the front side of the pressure measurement device 100.
The small diameter cylindrical portion 12 of the first case 1 is inserted into the hole formed in the cylindrical portion 21 of the second case 2, and the first case 1 and the second case 2 are mutually attached by using a fastener or the like. It is combined.
In addition, a cylindrical cable outlet 24 is connected to the cylindrical portion 21 of the second case 2. A cable (not shown) extending from the outside reaches the inside of the second case 2 by inserting the cable outlet 24 and can be connected to a terminal block 9 described later.

The panel 3 has a shape in which one plate-like panel is bent at two places, and has a front panel 31, a rear panel 32, and a side panel 33 connecting these.
The front panel 31 has a planar shape in which a circular shape is partially cut into an arc shape, and is disposed orthogonal to the axial direction of the cylindrical portion 21 and closes a portion of the opening 23 of the second case 2. A light transmissive display window 311 such as glass is provided on the front panel 31 at a portion facing the display unit 7 described later. In addition, the front panel 31 is provided with an operation hole 312 for arranging the operation unit 8 described later. In addition, the front panel 31 may be provided with a protective sheet for protecting the surface.
In the edge 313 adjacent to the side panel 33 in the front panel 31, two holes 314 for engaging the lid 4 are formed (see FIG. 3).

The rear panel 32 has a substantially arcuate planar shape, and is disposed orthogonal to the axial direction of the cylindrical portion 21. The rear panel 32 is disposed rearward of the front panel 31 in the axial direction of the cylindrical portion 21 of the second case 2 and at a position not overlapping the front panel 31.
The side panel 33 is disposed along the axial direction of the cylindrical portion 21 and connects the front panel 31 and the rear panel 32.
The front panel 31, the rear panel 32, and the side panel 33 may be formed of a single plate panel, or may be configured by connecting divided ones.

The panel 3 configured in this manner covers a part of the internal space 25 of the second case 2. Of the internal space 25 of the second case 2, a space not covered by the panel 3, that is, a space that can be exposed to the outside from the opening 23 of the second case 2 is defined as a workable space 26.
Although the detailed configuration of the lid 4 will be described later, the lid 4 is provided so as to be openable and closable on the front panel 31 so as to cover the workable space 26 or to be exposed to the outside.
In the present embodiment, the "closed" state of the lid 4 does not require that the opening 23 of the second case 2 is completely closed.

  The sensor unit 5 is housed in the first case 1 and disposed so as to face the outside from the opening on the flange portion 14 side of the first case 1. The sensor unit 5 has, for example, a capacitance type sensor, detects a change in pressure of the object to be measured as a change in capacitance, and outputs it as a capacitance signal.

  The circuit unit 6 includes two circuit boards 61 and 62 which are accommodated in the second case 2 and on which electronic components are mounted (see FIG. 4). The circuit boards 61 and 62 are disposed in parallel with each other so as to be orthogonal to the axial direction of the cylindrical portion 21 of the second case 2.

The circuit board 61 is disposed on the rear side of the circuit board 62 in the axial direction of the cylindrical portion 21 of the second case 2, and a screw or the like is attached to the support base 601 formed on the bottom 22 of the second case 2. It is fixed. Further, the circuit board 61 is formed to have a larger planar shape than the circuit board 62, and not only faces the circuit board 62, but also faces the rear surface panel 32. The circuit board 61 is electrically connected to the sensor unit 5 via a wire (not shown), and a capacitance signal is input from the sensor unit 5.
The circuit board 62 is supported by the circuit board 61 via the support column 602, and is electrically connected to the circuit board 61 via a wire (not shown). In addition, the circuit board 62 has a smaller planar shape than the circuit board 61, and is disposed close to the front panel 31.
When the capacitance signal is input from the sensor unit 5, the circuit unit 6 configured in this way calculates a pressure value of the fluid to be measured based on the capacitance signal, and displays a control signal for displaying the pressure value. It is possible to output to 7 and the terminal block 9.

The display unit 7 is supported by the circuit board 62 and electrically connected. Further, the display unit 7 includes a display element, and displays the pressure value of the fluid to be measured on the display element based on the control signal input from the circuit unit 6. The display element is, for example, an organic EL or liquid crystal. The numerical values and the like displayed on the display unit 7 are visually recognized by the user through the display window 311 of the front panel 31.
The operation unit 8 has an operation button 81 for the user to operate. The operation unit 8 is provided on the circuit board 62, and the operation button 81 is disposed on the display surface of the front panel 31 via the operation hole 312 of the front panel 31. The operation unit 8 changes settings and the like for controlling the driving of the circuit unit 6 when the user presses the operation button 81.

The terminal block 9 is disposed on the circuit board 61 and penetrates a hole provided in the rear surface panel 32 and has a connection portion 91 disposed in the workable space 26 of the second case 2.
A cable such as a power supply cable or a signal cable connected to the connection portion 91 of the terminal block 9 can be electrically connected to the circuit unit 6 through the terminal block 9.

Next, the configuration of the lid 4 will be described in detail with reference to FIGS. 5 and 6.
As shown in FIG. 5, the lid 4 has an engaging portion 41 integrally formed of rubber or synthetic resin, a lid main body 42, an elastic portion 43, and an extending portion 44. In FIG. 5, one of the two engaging portions 41 (arrow O in the figure) shows a state when the lid 4 is opened and the elastic portion 43 is bent, and the other (arrow C in the figure) is 4 shows a state in which the lid 4 is closed and no force is applied to the elastic portion 43.

The engagement portion 41 includes a base 411 and a pair of claws 412 extending from the base 411.
At the tips of the pair of claws 412, projections 413 are formed to project in opposite directions. In the engaging portion 41, the protrusions 413 of the respective claws 412 are hooked on the front panel 31 in a state where the pair of claws 412 are inserted through the holes 314 of the front panel 31. That is, the engagement portion 41 is engaged with the front panel 31 by a so-called snap fit method.

The lid body 42 has a substantially arcuate planar shape, and can close a part of the opening 23 of the second case 2 which is not blocked by the front panel 31. In other words, the lid main body 42 can cover the terminal block 9 of the workable space 26. The back surface of the lid body 42 is an opposing surface 423 that can face the terminal block 9.
Further, the lid body 42 has a cutout 421 having a shape in which a part of an edge portion close to the edge of the opening 23 of the second case 2 is cut in a substantially arcuate shape. The notch 421 forms a space between the edge of the opening 23 of the second case 2 and the lid body 42 so that the finger of the operator can enter (see FIG. 1).
Further, the lid main body 42 has an opposing surface 423 which is a surface opposing the terminal block 9 when the lid 4 is closed, and a rib 422 formed on the opposing surface 423. The rib 422 is formed along the edge of the lid body 42 excluding the notch 421 and reinforces the lid body 42.

The elastic portion 43 is a portion that connects the lid main body 42 and the engagement portion 41. Specifically, the elastic portion 43 is a portion continuously formed from the side of the front panel 31 of the lid main body 42 to the base 411 of the engaging portion 41, and has a thickness smaller than that of the lid main body 42 so as to be easily bent. Have.
The extension portion 44 is a portion provided so as to extend from the lid body 42 to the front panel 31 side, and has a thickness similar to that of the lid body 42. The extension 44 is the same as the seat 441 at the end in the direction of extension from the lid body 42 and the end face substantially orthogonal to the opposing surface 423 of the lid 42 and the opposing surface 423 of the lid 42 It has a second seat portion 442 which is a side-facing surface that is substantially parallel to the opposing surface 423.
Here, a slit 443 is formed between the extension portion 44 and each of the engagement portion 41 and the elastic portion 43. For this reason, the posture of the extension portion 44 can be changed with the rotation of the lid main body 42 described later.
In the present embodiment, three extending portions 44 alternately provided with the combination of the engaging portion 41 and the elastic portion 43 are provided.

Next, the opening / closing operation of the lid 4 will be described with reference to FIGS. 7 (A) to 7 (C).
The lid 4 is opened when the worker performs an operation of connecting a cable to the terminal block 9 in the second case 2 or when visually recognizing the connection state of the terminal block 9 and the cable.

As shown in FIG. 7A, when the lid 4 is in the closed state, the lid main body 42 is disposed to be orthogonal to the axial direction of the cylindrical portion 21, and the upper portion of the terminal block 9 in the workable space 26 is Covering. At this time, the second seat portion 442 of the extension portion 44 is disposed to face the front panel 31.
At this time, the length from the second seat portion 442 to the projection 413 of the engaging portion 41 is approximately equal to or less than the thickness of the front panel 31. Therefore, the engaging portion 41 attracts the second seat 442 to the front panel 31 side, and the second seat 442 is pressed against the front panel 31. Thus, the lid 4 is held in the closed position.

As shown in FIG. 7B, when the lid 4 is opened, the operator rotates the lid main body 42 around the elastic portion 43 functioning as an elastic hinge, and the side from which the lid main body 42 is separated from the front panel 31 Pull on. At this time, the elastic portion 43 elastically bends as the lid body 42 pivots. Further, the extension portion 44 changes the posture such that the second seat portion 442 is separated from the front panel 31 as the lid main body 42 is pivoted.
After the lid main body 42 is disposed at a predetermined angle (for example, about 90 degrees), when the operator releases the hand, the seat portion 441 of the extension portion 44 is closer to the opening 23 side of the second case 2 than the elastic portion 43. It abuts on the edge 313 of the front panel 31. Thereby, the lid 4 is opened.

As shown in FIG. 7C, when the lid 4 is in the open state, a resilient force for returning to the original state is generated in the elastically bent elastic portion 43, and the lid main body 42 is It is biased toward the opening 23 of the case 2. However, at this time, when the seat portion 441 is pressed against the front panel 31 at the opening 23 side of the second case 2 with respect to the elastic portion 43 which is the rotation center of the lid main body 42, the extension portion 44 is the lid main body 42. Support. For this reason, the lid body 42 is not rotated by the urging of the elastic portion 43. In other words, the extension portion 44 functions as a so-called stick for the lid main body 42, and prevents the lid main body 42 from falling toward the workable space 26 side. Therefore, the lid 4 in the open state can not be closed unintentionally.
In addition, the resilient force of the elastic portion 43 acts to prevent the lid body 42 from pivoting to a predetermined angle or more with respect to the front panel 31, and the lid 4 does not open more than the operator intended.
Thus, the lid body 42 maintains a predetermined angle with respect to the front panel 31.

  When closing the lid 4, the operator pulls the lid body 42 away from the front panel 31 and rotates the lid body 42 toward the opening 23 of the second case 2 about the elastic portion 43. Then, the extension portion 44 is disposed such that the seat portion 441 separates from the front panel 31 and the second seat portion 442 abuts on the front panel 31. Thereby, the lid 4 is closed.

In the present embodiment, the following effects can be achieved.
(1) In the present embodiment, as described above, since the lid 4 can be maintained at a predetermined angle in the open state, visual recognition or work of the terminal block 9 in the second case 2 is facilitated. In addition, since the terminal block 9 and the cable can be covered by the lid 4 at normal times, the appearance is excellent.

(2) Further, in the present embodiment, the second seat portion 442 maintains the closed position of the lid 4 so that the lid body 42 enters the inside of the second case 2 and interferes with the terminal block 9 Being prevented.

(3) Further, in the present embodiment, when the cable is connected to the terminal block 9, the display window 311 and the operation button 81 provided on the front panel 31 are not covered by the lid 4. Therefore, it is possible to easily confirm the information displayed on the display unit 7 and operate the operation button 81 while working on the terminal block 9. Thereby, the cable connection operation to the terminal block 9 can be easily performed.

(4) Further, in the present embodiment, the engaging portion 41, the lid main body 42, the elastic portion 43, and the extending portion 44 are integrally formed of rubber or synthetic resin. For this reason, the lid 4 can be easily manufactured.

(5) Further, in the present embodiment, the lid main body 42 has the rib 422 formed on the facing surface 423 that can face the terminal block 9. Since the lid main body 42 is reinforced by the ribs 422, it is easy to stand the lid main body 42 at a right angle to the front panel 31.

(6) Further, in the present embodiment, the lid main body 42 has the notch 421 having a shape in which a part of the edge portion close to the edge of the opening 23 of the second case 2 is cut away. Therefore, the operator can easily open the lid 4 by putting a finger on the notch 421 and pulling the lid 4.

[Modification]
The present invention is not limited to the embodiments described above, and modifications, improvements and the like within the scope which can achieve the object of the present invention are included in the present invention.

  In the embodiment, the engaging portion 41, the lid main body 42, the elastic portion 43, and the extension portion 44 which are each portion of the lid 4 are integrally formed of rubber or a synthetic resin having elasticity. It is not limited. For example, the elastic parts 43 may be made of non-elastic synthetic resin, metal or the like. In the above embodiment, when the lid body 42 is pivoted, the second seat portion 442 of the extension portion 44 is slightly elastically deformed by coming into contact with the front panel 31, but the tensile strength of the elastic portion 43 is adjusted. Alternatively, the extension 44 can be formed of a non-elastic material by adjusting the configuration and arrangement of the extension 44 and the like.

The number of engaging portions 41 and extending portions 44 in the lid 4 of the embodiment is not particularly limited.
Moreover, in the said embodiment, although the seat part 441 is a surface substantially orthogonal to the front panel 31 when the lid | cover 4 is closed, this invention is not limited to this. That is, the seat portion 441 may be any portion of the extension portion 44 that presses against the front panel 31 when the lid 4 is opened. For example, the angle of the seat 441 with respect to the front panel 31 when the lid 4 is closed can be arbitrarily set according to the desired angle of the lid 4 with respect to the front panel 31 when the lid 4 is opened. Specifically, the seat portion 441 may be configured to be disposed at an acute angle or an obtuse angle with respect to the front panel 31 when the lid 4 is closed. Further, the seat portion 441 is not limited to a flat surface, and may be formed, for example, in an uneven shape.
Similarly, the second seat portion 442 may be any portion of the extension portion 44 that presses against the front panel 31 when the lid 4 is closed, and the shape is not limited.
Moreover, in the said embodiment, although the extension part 44 has the seat part 441 and the 2nd seat part 442 as a different surface, these may be formed as a series of surfaces (for example, curved surface).

  In the said embodiment, although the engaging part 41 of the lid | cover 4 has a pair of nail | claw 412 and the front panel 31 has the hole 314, this relationship may be reverse. That is, the engaging portion 41 of the lid 4 may have a hole, and the front panel 31 may have a pair of claws. Moreover, the engagement method of the engagement part 41 of the lid | cover 4 and the front panel 31 may be except a snap fit system.

  Moreover, in the said embodiment, although the lid | cover main body 42 has the substantially bow-shaped notch part 421, the shape of the notch part 421 is not limited to this. In addition, the lid main body 42 may not have the notch portion 421. In this case, in order to facilitate opening and closing of the lid 4, a handle structure may be provided on the front side of the lid main body 42.

  In the embodiment, the bottomed cylindrical second case 2 connected to the first case 1 corresponds to the case of the present invention, but the configuration of the case of the present invention is not limited thereto. For example, the case of the present invention may be used without being combined with the other case, and its shape may be a square box shape having an opening at one side.

  The work object part of the present invention is not limited to being the terminal block 9, and may be, for example, an operation button or a semi-fixed resistor (trimer). In particular, it is preferable that a trimmer operated for calibration has a small number of operations assumed and is usually protected by a lid, so that it is suitable as a work object of the present invention.

Here, a modified example of the embodiment is shown in FIG. In FIG. 8, components having the same functions as those of the above embodiment are denoted by the same reference numerals.
In the physical quantity measuring device 101 shown in FIG. 8, a sensor (not shown) is housed in the case 2 which is a rectangular box. In the workable space 26 covered by the lid 4, a trimmer 92 as a work target portion is disposed. A display window 311 is provided on the front panel 31, and a model number 315 of the device is described.
In such a configuration, the operator checks the information displayed on the display window 311 and the model number described on the front panel 31 while maintaining the lid 4 at a predetermined angle with respect to the front panel 31. The trimmer 92 can be operated.

  The physical quantity measuring device of the present invention is not limited to being a pressure measuring device. For example, the pressure measurement device 100 of the embodiment can also be used as a physical quantity measurement device that measures a differential pressure or a temperature by using the sensor unit 5 detecting a pressure.

The housing of the present invention is not limited to being applied to a physical quantity measuring device. That is, the housing of the present invention can also be used as, for example, a terminal block cover or a power supply cover.
Moreover, the apparatus component accommodated in the case of this invention is not limited to being a work object part, You may require only visual recognition.

  DESCRIPTION OF SYMBOLS 1 ... 1st case, 2 ... 2nd case (case), 23 ... opening, 3 ... panel, 31 ... front panel, 311 ... display window, 312 ... operation hole, 32 ... rear panel, 33 ... side panel, 4 ... Lid, 41: engagement portion, 42: lid body, 421: notch portion, 422: rib, 43: elastic portion, 44: extension portion, 441: seat portion, 442: second seat portion, 5: sensor portion, DESCRIPTION OF SYMBOLS 6 ... Circuit part, 61 ... Circuit board, 62 ... Circuit board, 7 ... Display part, 8 ... Operation part, 9 ... Terminal block (work object part) 10 ... Housing, 100 ... Pressure-measurement apparatus.

Claims (7)

A case having an opening on one side and capable of containing device components;
A front panel closing a portion of the opening of the case;
A lid capable of opening and closing another part of the opening of the case;
The lid connects an engaging portion engaged with the front panel, a lid main body rotatable with respect to the front panel, the engaging portion and the lid main body, and the lid main body is rotated. And an extension portion extending from the lid main body to the front panel side.
The housing is characterized in that the extension portion has a seat that is pressed against the front panel by a restoring force of the elastic portion that is bent when the lid is opened. In the housing according to claim 1,
The housing is characterized in that the extension portion has a second seat that presses against the front panel when the lid is closed. A physical quantity measuring device, comprising: the housing according to claim 1; a sensor unit for detecting a physical quantity; and the device component housed in the inside of the case,
The device components are:
A circuit unit electrically connected to the sensor unit;
A work target unit electrically connected to the circuit unit;
The physical quantity measuring device, wherein the work target portion is covered by the lid when the lid is closed, and is exposed to the outside when the lid is opened. The physical quantity measuring device according to claim 3, wherein
The work target unit has a terminal block which is electrically connected to a cable through which the takeout portion of the case is inserted and which is electrically connected to the circuit unit.
At least one of a display window for displaying a detection result of the sensor unit and an operation unit for controlling driving of the circuit unit is disposed on the display surface of the front panel. The physical quantity measuring device according to claim 3 or claim 4, wherein
The physical quantity measuring device characterized in that the engaging portion, the lid main body, the elastic portion, and the seat portion are integrally formed of rubber or elastic synthetic resin. The physical quantity measuring device according to any one of claims 3 to 5, wherein
The physical quantity measuring device characterized in that the lid main body has a rib formed on a surface that can face the work target portion. The physical quantity measuring device according to any one of claims 3 to 6, wherein
The physical quantity measuring device according to claim 1, wherein the lid body has a cutout having a shape obtained by cutting out a part of an edge portion close to the opening edge of the case.

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