Physical quantity measuring device

Abstract

A physical quantity measuring device (1) is provided with a cylindrical case (2) provided with a through-hole (24) in a peripheral surface portion, a cap member (9) installed in a manner to cover the through-hole (24), a seal member (10) sealing between the through-hole (24) and the cap member (9), the cap member (9) is pivotally supported to a mounting portion (54) of a cover member (5) in a first posture and a second posture, in the first posture, a cap member engaging portion (93) is capable of being inserted through an engaging portion insertion hole, in the second posture, the cap member engaging portion (93) is engaged with the mounting portion (54), in the first posture, a linear member (102) is arranged on a rotation direction side from the cap member shaft portion (92) compared with the cap member engaging portion (93) in view of a direction.

Description

Technical Field

[0001] This invention relates to a device for measuring physical quantities. Background Technology

[0002] A physical quantity measuring device is known to have a built-in electronic adjustment unit that adjusts the electronic circuit section provided on the circuit board (e.g., Document 1 (Japanese Patent Application Laid-Open No. 2015-184259) etc.).

[0003] In Reference 1, an operating hole is provided in the cover component installed at the open end of the cylindrical shell for use when adjusting the electronic adjustment unit, so that the electronic adjustment unit can be operated even without removing the cover component from the shell.

[0004] Furthermore, in Reference 1, a cap component that can be detachably installed to block the operating hole is provided to prevent water or other substances from entering the housing through the operating hole. Additionally, to prevent the cap component from being lost, one end of a loss prevention component is connected to the cap component.

[0005] In Reference 1, one end of the loss prevention component needs to be connected to the cap component, and the other end needs to be engaged with the cover component before the cover component is installed on the housing. However, with the cover component installed on the housing, the cap component connected to the end of the loss prevention component cannot be installed. Therefore, if the loss prevention component is damaged after the housing is assembled, it cannot be replaced without disassembling the housing, thus complicating the maintenance process. Summary of the Invention

[0006] This invention provides a physical quantity measuring device that facilitates maintenance work.

[0007] The physical quantity measuring device of the present invention is characterized by comprising a cylindrical shell, a sensor module, a connector, a cover component, a circuit board, a cap component, and a sealing component. The cylindrical shell has a through hole on its circumferential surface. The sensor module is housed within the cylindrical shell and detects physical quantities. The connector is used to mount the sensor module and is configured to cover one opening of the cylindrical shell. The cover component is configured to cover the other opening of the cylindrical shell. The circuit board has an electronic circuit section for receiving signals detected by the sensor module and an electronic adjustment section for adjusting the electronic circuit section. The shell, wherein the aforementioned cap component is mounted to cover the aforementioned through hole, the aforementioned sealing component seals the space between the aforementioned through hole and the aforementioned cap component, the aforementioned electronic adjustment unit has an operable portion disposed at a position corresponding to the aforementioned through hole, the aforementioned cover component has a circuit board support portion supporting the aforementioned circuit board and an mounting portion for detachably mounting the aforementioned cap component, the aforementioned cap component has a cap component body portion, a cap component shaft portion, and a cap component engaging portion, the aforementioned cap component body portion is disposed on the outside of the aforementioned cylindrical shell and covers the aforementioned through hole, the aforementioned cap component shaft portion extends from the bottom surface of the aforementioned cap component body portion, the aforementioned cap... The component engaging portion extends radially from the end of the aforementioned cap component shaft portion. The aforementioned sealing component has a sealing component main body, a linear component, and a sealing component engaging portion. The aforementioned sealing component main body is arranged in a ring shape to surround the aforementioned cap component shaft portion. The aforementioned linear component extends from the aforementioned sealing component main body portion. The aforementioned sealing component engaging portion is located at the end of the aforementioned linear component. The aforementioned mounting portion is provided with a shaft insertion hole, an engaging portion insertion hole, and a groove. The aforementioned shaft insertion hole is configured to allow the aforementioned cap component shaft portion to be inserted through. The aforementioned engaging portion insertion hole is configured to allow the aforementioned... The cap component engaging portion is inserted through and continuous with the aforementioned shaft portion through hole. The aforementioned groove portion is provided with the aforementioned linear component and is continuous with the aforementioned shaft portion through hole. The aforementioned cap component is rotatably supported on the aforementioned mounting portion in a first posture and a second posture. In the aforementioned first posture, the aforementioned cap component engaging portion is inserted through the aforementioned engaging portion through hole. In the aforementioned second posture, the aforementioned cap component engaging portion is engaged with the aforementioned mounting portion. In the aforementioned first posture, compared with the aforementioned cap component engaging portion, the aforementioned linear component is positioned on the rotation direction side when viewed from the direction of the aforementioned cap component shaft portion, rotating from the aforementioned first posture to the aforementioned second posture.

[0008] In this invention, the cap component has a cap component main body, a cap component shaft, and a cap component engaging portion. The cap component main body is disposed on the outside of the cylindrical shell and covers the through hole. The cap component shaft extends from the bottom surface of the cap component main body, and the cap component engaging portion extends radially from the end of the cap component shaft. Furthermore, the sealing component has a sealing component main body, a linear component, and a sealing component engaging portion. The sealing component main body is arranged annularly to surround the cap component shaft. The linear component extends from the sealing component main body, and the sealing component engaging portion is located at the end of the linear component. Additionally, the mounting portion on which the cap component is detachably mounted has a shaft insertion hole, an engaging portion insertion hole, and a groove. The shaft insertion hole is configured to allow the cap component shaft to pass through, and the engaging portion insertion hole is configured to allow the cap component engaging portion to pass through, and is continuous with the shaft insertion hole. The linear component is disposed in the groove. Therefore, in the first position, the cap component's engaging part can be inserted through the engaging part's through hole, and in the second position, the cap component's engaging part engages with the mounting part, so it can be detachably installed on the mounting part.

[0009] Here, in the first posture, the linear component, compared to the engagement portion of the cap component, is positioned in the rotational direction from the first posture to the second posture when viewed from the direction of the cap component's shaft. Therefore, with the cap component in the first posture, the cap component's shaft and the linear component are inserted through the shaft's through hole. Then, when the cap component rotates from the first posture to the second posture, the linear component is forced by the cap component's engagement portion and rotates in the same direction as the cap component. Thus, while the linear component moves in the rotational direction, it is guided by the groove of the mounting portion, allowing it to be positioned within the groove. Therefore, even when the cap component is installed, after assembling the cylindrical shell, the linear component, which prevents the cap component from being lost, can be installed in the mounting portion disposed within the cylindrical shell. Therefore, even if the linear component is damaged after assembling the cylindrical shell, the sealing component with the linear component can be easily replaced.

[0010] The physical quantity measuring device of the present invention is characterized by comprising a cylindrical shell, a sensor module, a connector, a cover component, a circuit board, a cap component, and a sealing component. The cylindrical shell has a through hole on its circumferential surface. The sensor module is housed within the cylindrical shell and detects physical quantities. The connector is used to mount the sensor module and is configured to cover one opening of the cylindrical shell. The cover component is configured to cover the other opening of the cylindrical shell. The circuit board has an electronic circuit section for receiving signals detected by the sensor module and an electronic adjustment section for adjusting the electronic circuit section. The aforementioned cap component is installed within the aforementioned cylindrical shell, covering the aforementioned through hole. The aforementioned sealing component seals the space between the aforementioned through hole and the aforementioned cap component. The aforementioned electronic adjustment unit has an operable portion positioned corresponding to the aforementioned through hole. The aforementioned cover component has a circuit board support portion supporting the aforementioned circuit board and an mounting portion for detachably mounting the aforementioned cap component. The aforementioned cap component has a cap component body portion, a cap component shaft portion, and a cap component engaging portion. The aforementioned cap component body portion is positioned outside the aforementioned cylindrical shell, covering the aforementioned through hole. The cap component shaft portion is mounted from the aforementioned cap... The bottom surface of the main body of the component extends outwards. The aforementioned cap component engaging portion extends radially from the end of the aforementioned cap component shaft portion. The aforementioned sealing component has a sealing component main body, a linear component, and a sealing component engaging shaft portion. The aforementioned sealing component main body is arranged in a ring shape to surround the aforementioned cap component shaft portion. The aforementioned linear component extends from the aforementioned sealing component main body. The aforementioned sealing component engaging shaft portion is located at the end of the aforementioned linear component and is arranged in a direction intersecting the aforementioned linear component. The aforementioned mounting portion has a shaft insertion hole and an engaging portion insertion hole. The aforementioned shaft insertion hole is configured to allow the aforementioned cap component shaft to pass through, and the aforementioned engaging part insertion hole is configured to allow the aforementioned cap component engaging part to pass through, and is continuous with the aforementioned shaft insertion hole. The aforementioned linear component is arranged in the aforementioned engaging shaft insertion hole, allowing the aforementioned sealing component to engage the shaft to pass through. The aforementioned cap component is rotatably supported on the aforementioned mounted part in a first posture and a second posture. In the aforementioned first posture, the aforementioned cap component engaging part can pass through the aforementioned engaging part insertion hole, and in the aforementioned second posture, the aforementioned cap component engaging part engages with the aforementioned mounted part.

[0011] In this invention, the cap component has a cap component main body, a cap component shaft, and a cap component engaging portion. The cap component main body is disposed on the outside of the cylindrical shell and covers the through hole. The cap component shaft extends from the bottom surface of the cap component main body, and the cap component engaging portion extends radially from the end of the cap component shaft. Furthermore, the sealing component has a sealing component main body, a linear component, and a sealing component engaging shaft. The sealing component main body is arranged in a ring shape to surround the cap component shaft. The linear component extends from the sealing component main body, and the sealing component engaging shaft is located at the end of the linear component and is arranged in a direction intersecting the linear component. Furthermore, the mounting portion for detachably mounting the cap component is provided with a shaft insertion hole, a locking insertion hole, and a locking shaft insertion hole. The aforementioned shaft insertion hole is configured to allow the shaft of the cap component to pass through, and the aforementioned locking insertion hole is configured to allow the locking part of the cap component to pass through, and is continuous with the shaft insertion hole. A linear member is arranged in the aforementioned locking shaft insertion hole to allow the fastening member to lock the shaft to pass through. Thus, in the first position, the locking part of the cap component can pass through the locking insertion hole, and in the second position, the locking part of the cap component engages with the mounting portion, so it is detachably mounted on the mounting portion.

[0012] Here, the mounting section has a locking shaft insertion hole through which the locking shaft of the sealing component can be inserted. Therefore, by first inserting the locking shaft of the sealing component through the locking shaft insertion hole, and then placing the wire-shaped component in the locking shaft insertion hole, the sealing component can be installed on the mounting section. At this time, the wire-shaped component and the locking shaft of the sealing component intersect, so after placing the wire-shaped component in the locking shaft insertion hole, the locking shaft of the sealing component engages with the mounting section. That is, even if the wire-shaped component is pulled in the direction of removing the sealing component, the locking shaft of the sealing component cannot be easily pulled out from the mounting section. Therefore, if the sealing component is installed on the mounting section according to the above process while the cap component is installed, the loss of the cap component can be prevented.

[0013] That is, after assembling the cylindrical shell, even when the cap component is installed, the linear component that prevents the cap component from being lost can be installed in the mounting part disposed inside the cylindrical shell. Therefore, even if the linear component is damaged after assembling the cylindrical shell, the sealing component with the linear component can be easily replaced.

[0014] In the physical quantity measuring device of the present invention, it is preferable that a protrusion with a diameter decreasing as it moves toward the end is formed at one end of the aforementioned retaining member engaging the shaft portion, and a recess is formed axially at the other end of the aforementioned retaining member engaging the shaft portion.

[0015] In this structure, when a tool such as a screwdriver is inserted into the recess of the locking shaft of the sealing component, the protrusion of the locking shaft of the sealing component can be inserted through the through hole of the locking shaft. Therefore, it is easy to perform the operation of inserting the locking shaft of the sealing component through the through hole.

[0016] In the physical quantity measuring device of the present invention, it is preferable that a engaging protrusion is provided in the aforementioned mounting portion, which protrudes into the aforementioned through hole and engages with the aforementioned through hole.

[0017] In this structure, the engaging protrusion of the mounted part can engage with the through hole, so the mounted part can be easily positioned relative to the through hole. Therefore, the assembly of the physical quantity measuring device can be facilitated.

[0018] In the physical quantity measuring device of the present invention, preferably, the cap component engaging portion has a first engaging portion and a second engaging portion, the second engaging portion is disposed on the side opposite to the first engaging portion across the axial portion of the cap component, and is different in size from the first engaging portion; the engaging portion insertion hole has a first engaging portion insertion hole and a second engaging portion insertion hole, the first engaging portion insertion hole corresponds to the first engaging portion, and the second engaging portion insertion hole is disposed on the side opposite to the first engaging portion insertion hole across the axial portion insertion hole, and corresponds to the second engaging portion.

[0019] In this structure, the cap component has a first engaging portion and a second engaging portion, so it can be reliably engaged with the mounting portion in the second position. Therefore, in the second position, it is possible to prevent the cap component from falling off the mounting portion.

[0020] In the physical quantity measuring device of the present invention, it is preferable that the main body of the aforementioned cap component is formed in a pentagonal shape.

[0021] In this structure, the main body of the hat component is pentagonal, so the user can easily identify whether the hat component is in posture 1 or posture 2. Attached Figure Description

[0022] Figure 1 This is a perspective view showing the physical quantity measuring device according to the first embodiment of the present invention.

[0023] Figure 2 This is an exploded perspective view showing the general outline of the physical quantity measuring device of the aforementioned embodiment.

[0024] Figure 3 This is a front view showing the general outline of the cover component.

[0025] Figure 4 It is a three-dimensional view showing the general outline of the cap component and the sealing component.

[0026] Figure 5This diagram shows the installation process of the cap component and the sealing component.

[0027] Figure 6 This diagram shows the installation process of the cap component and the sealing component.

[0028] Figure 7 This diagram shows the installation process of the cap component and the sealing component.

[0029] Figure 8 This is a diagram showing the installation status of the sealing components.

[0030] Figure 9 This is a front view showing an overview of the cover component in the second embodiment.

[0031] Figure 10 This is a perspective view showing the general outline of the sealing component in the second embodiment.

[0032] Figure 11 This diagram shows the installation process of the cap component and the sealing component.

[0033] Figure 12 This diagram shows the installation process of the cap component and the sealing component.

[0034] Figure 13 This diagram shows the installation process of the cap component and the sealing component.

[0035] Figure 14 This diagram shows the installation process of the cap component and the sealing component.

[0036] Figure 15 This is a diagram showing the installation status of the sealing components. Detailed Implementation

[0037] [First Implementation]

[0038] The first embodiment of the present invention will be described with reference to the accompanying drawings.

[0039] Figure 1 This is a perspective view showing the general outline of the physical quantity measuring device 1 of this embodiment. Figure 2 This is an exploded perspective view showing the general outline of the physical quantity measuring device 1. Furthermore, the physical quantity measuring device 1 of this embodiment is configured to measure the pressure of the fluid being measured.

[0040] like Figure 1 , Figure 2 As shown, the physical quantity measuring device 1 includes a cylindrical shell 2, a connector 3, a sensor module 4, a cover component 5, a circuit board 6, a signal transmission component 7, a holding component 8, a cap component 9, and a sealing component 10.

[0041] [Cylindrical shell 2]

[0042] The cylindrical shell 2 is a metal component formed in a cylindrical shape, with a first opening 21 formed on one side along the direction of the central axis R and a second opening 22 formed on the other side.

[0043] Furthermore, a recess 23 is provided on the circumferential surface of the cylindrical shell 2, forming a portion of the cylindrical shell 2. A through hole 24 is formed on the bottom surface of the recess 23 of the cylindrical shell 2. That is, the through hole 24 is provided on the circumferential surface of the cylindrical shell 2.

[0044] Furthermore, a fitting ring 25 for fitting the cover member 5 is provided on the side of the second opening 22. And a step portion 26 is formed on the inner side of the fitting ring 25.

[0045] [Connector 3]

[0046] The connector 3 is a metal component arranged to cover the first opening 21 of the cylindrical shell 2. In this embodiment, the connector 3 is welded to the end of the cylindrical shell 2 at the first opening 21. However, the connector 3 and the cylindrical shell 2 are not limited to being joined by welding; for example, the connector 3 may also be threaded onto the cylindrical shell 2 for installation.

[0047] The connector 3 has an inlet hole (not shown) for introducing the fluid to be measured. Furthermore, one end of the connector 3 has a tool engaging portion 31 extending radially from the center to engage with tools such as wrenches, and the other end has an externally threaded portion 32 that threadedly engages with a mounting portion (not shown). However, the other end of the connector 3 is not limited to the externally threaded portion 32; for example, it could also be an internally threaded portion. Furthermore, the other end of the connector 3 can also be configured to be mounted to the mounting portion by welding.

[0048] [Sensor Module 4]

[0049] The sensor module 4 has a cylindrical part 41 mounted on one end of the connector 3 and a diaphragm 42 integrally formed on one end of the cylindrical part 41.

[0050] A strain gauge (not shown) is formed on the diaphragm 42, which is used to detect the pressure of the fluid being measured introduced through the inlet port. Furthermore, the sensor module 4 is configured to output a detection signal to the electronic circuit section 62 (described later) in accordance with the detected pressure.

[0051] In addition, the sensor module 4 is not limited to the module with the diaphragm 42. For example, it can also be a so-called MEMS (MicroElectro Mechanical System) sensor, as long as it is configured to detect the pressure of the fluid being measured.

[0052] [Cover component 5]

[0053] Figure 3This is a front view showing the general outline of cover component 5.

[0054] like Figures 1-3 As shown, the cover component 5 is a resin-made so-called connector-type component, which includes a cover body 51, a cylindrical part 52, a circuit board support part 53, and a mounting part 54.

[0055] The cover body 51 is formed in the shape of a circular plate and is riveted to the cylindrical shell 2 by the aforementioned fitting ring 25. In addition, a communication hole (not shown) communicating with the cylindrical part 52 is provided on the bottom surface of the cover body 51.

[0056] The inner circumferential surface of the cylindrical portion 52 is provided with a mounting hole 521 for accommodating the signal transmission component 7. In addition, the outer circumferential surface of the cylindrical portion 52 is provided with an external thread.

[0057] The circuit board support portion 53 is a component that supports the circuit board 6 and is provided protruding from the cover body 51. In this embodiment, the circuit board support portion 53 has a pair of first support portions 531 and second support portions 532. Furthermore, the circuit board support portion 53 clamps the circuit board 6 by means of the first support portions 531 and the second support portions 532, thereby supporting the circuit board 6.

[0058] The mounting part 54 is a component that can be detachably installed on the cap component 9. In this embodiment, the mounting part 54 has a mounting part body 541, a connecting part 542, and an engaging protrusion 543.

[0059] The mounting body 541 is flat and supported by connecting part 542 to the first support part 531 and the second support part 532. Furthermore, the mounting body 541 has a shaft insertion hole 541A, a first engaging part insertion hole 541B, a second engaging part insertion hole 541C, a groove 541D, and an engaging part 541E (see reference). Figure 5 ).

[0060] The engaging protrusion 543 is provided protruding from the mounting body 541 toward the through hole 24 of the cylindrical shell 2. Furthermore, in this embodiment, the engaging protrusion 543 is inserted into the through hole 24 and engaged. Thus, the cover member 5 is positioned relative to the cylindrical shell 2.

[0061] The shaft insertion hole 541A is configured so that the cap member shaft 92 of the cap member 9, which will be described later, can be inserted through.

[0062] The first engaging portion insertion hole 541B is continuously provided with the shaft portion insertion hole 541A. Furthermore, the first engaging portion insertion hole 541B is formed in a shape corresponding to the first engaging portion 931 of the cap member 9 described later, and can be inserted through the first engaging portion 931.

[0063] The second engaging through hole 541C is located on the side opposite to the first engaging through hole 541B, separated from the shaft through hole 541A, and is continuously provided with the shaft through hole 541A. Furthermore, the second engaging through hole 541C is formed in a shape corresponding to the second engaging portion 932 of the cap member 9 described later, allowing the second engaging portion 932 to pass through. In addition, the first engaging through hole 541B and the second engaging through hole 541C constitute the engaging through hole of this application, which is continuous with the shaft through hole 541A.

[0064] The groove 541D is continuously provided with the shaft insertion hole 541A. In this embodiment, the groove 541D is formed to communicate with the shaft insertion hole 541A at a position near the first engaging insertion hole 541B. Furthermore, the linear member 102 of the sealing member 10, which will be described later, is disposed in the groove 541D.

[0065] Part 541E (refer to) Figure 5 It is configured to engage with the first engaging part 931. Details regarding the engaging part 541E will be explained later.

[0066] Furthermore, details regarding the installation method of the cap component 9 and the sealing component 10 relative to the mounted part 54 will be explained later.

[0067] [Circuit board 6]

[0068] The circuit board 6 has a board body 61, an electronic circuit section 62, and an electronic adjustment section 63.

[0069] The substrate body 61 is a planar rectangular plate component with its long side along the direction of the central axis R of the cylindrical shell 2, and a wiring pattern (not shown) is formed on its front side. In this embodiment, the substrate body 61 includes a first substrate 611 and a second substrate 612 arranged parallel to each other, and these first substrates 611 and second substrates 612 are connected by a connector 613. Furthermore, the first substrate 611 and the second substrate 612 are supported on the cover member 5 by being clamped by the loop substrate support portion 53 of the aforementioned cover member 5.

[0070] Furthermore, in this embodiment, locking holes 612A are formed at two locations on the second substrate 612. The circuit substrate 6 is held by the holding member 8 by inserting the locking tab 82 of the holding member 8 (described later) into the locking holes 612A.

[0071] In addition, the substrate body 61 is not limited to the above structure. For example, the substrate body 61 may be composed of one substrate or three or more substrates.

[0072] The electronic circuit section 62 receives detection signals from the sensor module 4 and is disposed on the first substrate 611. Furthermore, the strain gauge of the sensor module 4 and the electronic circuit section 62 are electrically connected by wires or the like (not shown).

[0073] The electronic adjustment unit 63 adjusts the electronic circuit unit 62, which is disposed on the first substrate 611 facing the circumferential surface of the cylindrical shell 2.

[0074] In this embodiment, the electronic adjustment unit 63 has an operable part 631 that functions as a trimmer. The operable part 631 is positioned corresponding to the through hole 24 of the cylindrical shell 2. Therefore, if the cap member 9 is removed to expose the through hole 24, a screwdriver or similar tool can be inserted through the through hole 24 to operate the operable part 631.

[0075] [Signal Transmission Component 7]

[0076] The signal transmission component 7 has a cylindrical component 71 and a plurality of terminal terminals 72 disposed on the cylindrical component 71. The terminal terminals 72 are electrically connected to the circuit board 6 by wires (not shown) or the like.

[0077] [Retaining component 8]

[0078] The retaining member 8 is a metal component used to retain the circuit board 6. In this embodiment, the retaining member 8 has a flat portion 81 and a locking piece portion 82. Furthermore, the flat portion 81 has a first plate portion 81A and a second plate portion 81B.

[0079] The first plate portion 81A is sandwiched between the stepped portion 26 of the cylindrical shell 2 and the cover body 51 of the cover component 5, and its shape corresponds to the inner circumferential surface of the fitting ring 25.

[0080] The straight portion of the first plate portion 81A, opposite to the outer surface forming the arc, abuts against the side of the circuit board support portion 53. Thus, the retaining member 8 is positioned relative to the cover member 5.

[0081] The second plate portion 81B is integrally formed with the first plate portion 81A and is inserted between a pair of first support portions 531 and second support portions 532, and is also inserted between the cover body 51 and the circuit board 6. Furthermore, a window portion 81C is formed in the second plate portion 81B. The window portion 81C is a space for inserting wires or the like used to electrically connect the terminal terminal 72 and the circuit board 6.

[0082] The locking tab 82 is integrally formed with the first plate portion 81A. In this embodiment, two locking tabs 82 are provided. As described above, the locking tabs 82 are respectively inserted into the locking holes 612A of the circuit board 6, and the locking tabs 82 and the locking holes 612A are fixed by solder (not shown). Thus, the retaining member 8 holds the circuit board 6.

[0083] [Hood Component 9]

[0084] Figure 4 This is a perspective view showing the general outline of the cap component 9 and the sealing component 10.

[0085] like Figures 1-4 As shown, the cap component 9 is made of resin and is mounted to cover the through hole 24. In this embodiment, as described above, the cap component 9 is detachably mounted to the mounting portion 54 of the cover component 5. Furthermore, the cap component 9 has a cap component body portion 91, a cap component shaft portion 92, and a cap component engaging portion 93.

[0086] The main body 91 of the cap component is disposed on the outside of the cylindrical shell 2 in such a way as to cover the through hole 24 of the cylindrical shell 2. More specifically, the main body 91 of the cap component is disposed in the recess 23 of the cylindrical shell 2.

[0087] Furthermore, in this embodiment, the main body 91 of the cap component is formed into a pentagonal shape with a vertex 91A, and has a bottom surface 91B facing the cylindrical shell 2 and a surface 91C provided on the side opposite to the bottom surface 91B.

[0088] The cap component shaft portion 92 extends integrally with the cap component body portion 91 from the bottom surface 91B of the cap component body portion 91. Furthermore, as described above, the cap component shaft portion 92 is configured to be able to pass through the shaft insertion hole 541A of the mounted portion 54.

[0089] The cap component engaging portion 93 is provided extending radially from the end of the cap component shaft portion 92. In this embodiment, the cap component engaging portion 93 has a first engaging portion 931 and a second engaging portion 932.

[0090] The first engaging portion 931 is provided in a prism shape extending from the shaft portion 92 of the cap component, and can be inserted through the aforementioned first engaging portion insertion hole 541B. That is, the first engaging portion 931 is formed to be slightly smaller than the first engaging portion insertion hole 541B.

[0091] The second engaging portion 932 is disposed on the side opposite to the first engaging portion 931, passing over the cap component shaft portion 92. Furthermore, in this embodiment, the second engaging portion 932 extends from the cap component shaft portion 92 in a prism-like shape and is capable of being inserted through the aforementioned second engaging portion insertion hole 541C. That is, the second engaging portion 932 is formed to be slightly smaller than the second engaging portion insertion hole 541C.

[0092] Furthermore, in this embodiment, the second engaging portion 932 is formed to be one size larger than the first engaging portion 931. That is, the first engaging portion 931 and the second engaging portion 932 are of different sizes.

[0093] In this embodiment, when the apex 91A of the cap component main body 91 protrudes upward, that is, when it protrudes in the vertical direction, the first engaging portion 931 and the second engaging portion 932 extend horizontally relative to the cap component shaft portion 92, and can respectively pass through the first engaging portion insertion hole 541B and the second engaging portion insertion hole 541C. That is, when the apex 91A of the cap component main body 91 protrudes in the vertical direction, the cap component 9 can be mounted on the mounting portion 54 of the cover component 5 or removed from the mounting portion 54 of the cover component 5.

[0094] Furthermore, when the apex 91A of the cap component body 91 protrudes laterally, that is, when it protrudes in the horizontal direction, the first engaging portion 931 and the second engaging portion 932 extend vertically relative to the cap component shaft portion 92 and engage with the mounting portion 54 of the cover component 5. In other words, when the apex 91A of the cap component body 91 protrudes in the horizontal direction, the cap component 9 cannot be removed from the mounting portion 54 of the cover component 5.

[0095] Furthermore, the posture of the cap component 9 protruding vertically from vertex 91A is an example of the first posture of the present invention, and the posture of the cap component 9 protruding horizontally from vertex 91A is an example of the second posture of the present invention.

[0096] [Fixed Seal Component 10]

[0097] The sealing component 10 is a component that secures the through hole 24 of the cylindrical shell 2 and the cap component body 91 of the cap component 9. Furthermore, the sealing component 10 is formed of rubber or an elastic synthetic resin and is installed on the cap component 9. In this embodiment, the sealing component 10 has a sealing component body 101, a linear component 102, and a sealing component engaging portion 103.

[0098] The sealing component main body 101 is arranged in an annular shape to surround the cap component shaft 92. Furthermore, in this embodiment, a protrusion 101A protruding into the cylindrical shell 2 is formed along the edge of the sealing component main body 101. When the sealing component main body 101 is disposed between the cap component main body 91 and the cylindrical shell 2, the protrusion 101A elastically deforms, thereby sealing the cap component main body 91 and the through hole 24.

[0099] A linear member 102 is provided in a rod-like manner extending from the main body 91 of the cap member toward the cylindrical shell 2. Furthermore, the linear member 102 is inserted through the groove 541D of the aforementioned mounting body 541.

[0100] The fastening component engaging portion 103 is provided at the end of the linear component 102. In this embodiment, the fastening component engaging portion 103 is formed in a generally hemispherical shape.

[0101] [Installation method of cap component 9 and sealing component 10]

[0102] Next, the installation method of the cap component 9 and the sealing component 10 will be explained.

[0103] Figures 5-7 This diagram illustrates the installation process of the cap component 9 and the sealing component 10. Additionally, Figures 5-7 For ease of understanding, the cylindrical shell 2, the circuit board 6, etc., are omitted in the text. Furthermore, Figures 5-7 In, from and Figure 3 View cover component 5 from the opposite side.

[0104] First, assemble the cylindrical shell 2. That is, assemble the physical quantity measuring device 1, except for the cap component 9 and the sealing component 10. And, as... Figure 5 As shown, the main body 91 of the cap component protrudes vertically toward the vertex 91A. In this state, the shaft portion 92, the first engaging portion 931, and the second engaging portion 932 of the cap component are inserted through the shaft portion through hole 541A, the first engaging portion through hole 541B, and the second engaging portion through hole 541C, respectively.

[0105] Then, the linear component 102 and the locking portion 103 of the sealing component are inserted through the through hole 541A of the shaft portion. That is, when viewed from the axial direction of the shaft portion 92 of the cap component, the sealing component 10 is installed on the cap component 9 in such a way that the linear component 102 and the locking portion 103 of the sealing component are located on the counterclockwise rotation side compared with the second locking portion 932.

[0106] Next, as Figure 6 As shown, the cap component 9 is rotated counterclockwise around the shaft portion 92 of the cap component. This causes the linear component 102 and the locking portion 103 of the sealing component to be forced towards the second locking portion 932, moving them in the counterclockwise direction. Furthermore, the counterclockwise rotation direction is an example of the rotation direction of this invention.

[0107] And, as Figure 7 As shown, when the cap component 9 is rotated further in the counterclockwise direction, with the apex 91A of the cap component body 91 facing the horizontal direction, the first engaging portion 931 engages with the engaging portion 541E. This restricts the counterclockwise rotation of the cap component 9. Furthermore, as described above, in this state, the first engaging portion 931 and the second engaging portion 932 engage with the mounting portion 54. Therefore, in this state, the cap component 9 does not detach from the mounting portion 54. That is, the cap component 9 is axially supported on the mounting portion 54 by the apex 91A being able to rotate into a vertically protruding posture and a horizontally protruding posture.

[0108] In addition, such as Figure 7As shown, when the cap component 9 is rotated counterclockwise until the first engaging portion 931 engages with the engaged portion 541E, the linear component 102 is forced onto the second engaging portion 932 and positioned in the groove portion 541D. Thus, the sealing component 10 is installed on the mounting portion 54. Therefore, in this embodiment, the cap component 9 and the sealing component 10 can be installed while the cylindrical shell 2 is assembled.

[0109] Furthermore, even when the cap member 9 is rotated clockwise in this state, the linear member 102 remains positioned in the groove 541D and is not subjected to force by the first engaging part 931 and the second engaging part 932. That is, even when the cap member 9 is rotated to a position where the apex 91A protrudes vertically or horizontally, the sealing member 10 does not detach from the mounting part 54.

[0110] Figure 8 This is a diagram showing the installation state of the sealing component 10.

[0111] like Figure 8 As shown, when the cap component 9 is rotated to a position where its apex 91A protrudes vertically, the mounted portion 54 can be removed from the first engaging portion 931 and the second engaging portion 932. In this state, the linear component 102 is disposed in the groove portion 541D, so the sealing component engaging portion 103 engages with the mounted portion 54. Therefore, even when the cap component 9 is removed from the mounted portion 54, the sealing component 10 does not detach from the mounted portion 54. Thus, when removing the cap component 9, it is possible to prevent the cap component 9 with the sealing component 10 mounted from being lost.

[0112] Furthermore, in this embodiment, the main body 91 of the cap component is formed into a pentagonal shape with a vertex 91A, so the orientation of the first engaging portion 931 and the second engaging portion 932 can be easily identified. That is, the user can easily identify whether the cap component 9 can be disassembled or assembled by checking the orientation of the main body 91 of the cap component.

[0113] In the above-described embodiment, the following effects can be achieved.

[0114] (1) In this embodiment, the cap component 9 has a cap component main body 91, a cap component shaft 92, a first engaging portion 931, and a second engaging portion 932. The cap component main body 91 is disposed on the outside of the cylindrical shell 2, covering the through hole 24. The cap component shaft 92 extends from the bottom surface 91B of the cap component main body 91. The first engaging portion 931 and the second engaging portion 932 extend radially from the end of the cap component shaft 92. Furthermore, the sealing component 10 has a sealing component main body 101, a linear component 102, and a sealing component engaging portion 103. The sealing component main body 101 is arranged in a ring shape to surround the cap component shaft 92. The linear component 102 extends from the sealing component main body 101, and the sealing component engaging portion 103 is disposed at the end of the linear component 102. Furthermore, the mounting portion 54, on which the cap component 9 can be detachably mounted, is provided with a shaft insertion hole 541A, a first engaging insertion hole 541B, a second engaging insertion hole 541C, and a groove 541D. The aforementioned shaft insertion hole 541A is configured to allow the cap component shaft 92 to be inserted through. The aforementioned first engaging insertion hole 541B is configured to allow the first engaging part 931 to be inserted through and is continuous with the shaft insertion hole 541A. The aforementioned second engaging insertion hole 541C is configured to allow the second engaging part 932 to be inserted through and is continuous with the shaft insertion hole 541A. The aforementioned groove 541D is provided with a wire-like component 102. Therefore, when the cap component 9 protrudes vertically from its apex 91A, the first engaging portion 931 and the second engaging portion 932 can respectively engage with the first engaging portion insertion hole 541B and the second engaging portion insertion hole 541C. Furthermore, when the cap component 9 protrudes horizontally from its apex 91A, i.e., in its second posture, the first engaging portion 931 and the second engaging portion 932 engage with the mounting portion 54. Thus, the cap component 9 can be detachably mounted to the mounting portion 54.

[0115] Here, in the posture where the apex 91A protrudes vertically, i.e., in the first posture, the linear member 102, when viewed axially from the cap member shaft 92, is positioned on the counterclockwise rotation direction side compared to the second engaging portion 932. Therefore, when the cap member 9 is in the posture where the apex 91A protrudes vertically, the cap member shaft 92 and the linear member 102 are inserted through the shaft insertion hole 541A. Then, when the cap member 9 is rotated in the counterclockwise rotation direction, the linear member 102 is forced by the second engaging portion 932 and rotates in the counterclockwise rotation direction. In this way, the linear member 102 moves in the counterclockwise rotation direction while being guided by the groove 541D of the mounting portion 54, so the linear member 102 can be positioned in the groove 541D. Therefore, even when the cap member 9 is installed after assembling the cylindrical shell 2, the linear member 102, which prevents the cap member 9 from being lost, can be installed in the mounting portion 54 disposed inside the cylindrical shell 2. Therefore, even if the linear component 102 is damaged after assembling the cylindrical shell 2, the sealing component 10 with the linear component 102 can be easily replaced.

[0116] (2) In this embodiment, the engaging protrusion 543 of the mounted part 54 can be engaged with the through hole 24, so the mounted part 54 can be easily positioned relative to the through hole 24. Therefore, the assembly of the physical quantity measuring device 1 can be made easy.

[0117] (3) In this embodiment, the cap component engaging portion 93 has a first engaging portion 931 and a second engaging portion 932, so the mounted portion 54 can be securely engaged. Therefore, it is possible to prevent the cap component 9 from falling off the mounted portion 54.

[0118] (4) In this embodiment, the main body 91 of the hat component is pentagonal in shape, so the user can easily identify whether the hat component 9 is in the first posture or the second posture.

[0119] [Second Implementation]

[0120] Next, the second embodiment of the present invention will be described with reference to the accompanying drawings.

[0121] In the second embodiment, the difference from the first embodiment is that the sealing member 10A has a sealing member engaging shaft portion 107A disposed at the end of the linear member 106A and arranged in a direction intersecting the linear member 106A, and an engaging shaft portion insertion hole 541J is formed in the mounted portion 54A through which the sealing member engaging shaft portion 107A can be inserted. Furthermore, in the second embodiment, the same reference numerals are used for structures identical or equivalent to those in the first embodiment, and descriptions are omitted.

[0122] [Cover component 5A]

[0123] Figure 9 This is a front view showing an overview of the cover component 5A in this embodiment.

[0124] like Figure 9 As shown, the cover component 5A is a resin-made so-called connector-type component, similar to the cover component 5 of the first embodiment described above, and includes a cover body 51A, a cylindrical portion 52A, a circuit board support portion 53A, and a mounting portion 54A.

[0125] Furthermore, the cover body 51A, cylindrical portion 52A, and circuit board support portion 53A are the same as the cover body 51, cylindrical portion 52, and circuit board support portion 53 of the first embodiment described above, so detailed descriptions are omitted.

[0126] The mounting portion 54A is the same as the mounting portion 54 in the first embodiment described above, and is a component capable of detachably mounting the cap component 9. In this embodiment, the mounting portion 54A has a mounting portion body 541F, a connecting portion 542A, and an engaging protrusion 543A. The connecting portion 542A and the engaging protrusion 543A are the same as the connecting portion 542 and the engaging protrusion 543 in the first embodiment described above, so detailed descriptions are omitted.

[0127] The mounting body 541F is flat and supported by connecting portions 542A to the first support portion 531A and the second support portion 532A. Furthermore, the mounting body 541F has a shaft insertion hole 541G, a first engaging portion insertion hole 541H, a second engaging portion insertion hole 541I, and an engaging shaft insertion hole 541J. Additionally, similar to the first embodiment described above, the mounting body 541F also has an engaging portion 541E (see reference 541E). Figure 13 ).

[0128] The shaft insertion hole 541G is similar to that in the first embodiment described above, allowing the cap member shaft 92 of the cap member 9 to be inserted.

[0129] The first engaging portion through hole 541H is provided continuously with the shaft portion through hole 541G. Furthermore, the first engaging portion through hole 541H is formed in a shape corresponding to the first engaging portion 931 of the cap member 9, allowing the first engaging portion 931 to be inserted.

[0130] The second engaging portion through hole 541I is provided continuously with the shaft portion through hole 541G on the side opposite to the first engaging portion through hole 541H, separated by the shaft portion through hole 541G. Furthermore, the second engaging portion through hole 541I is formed in a shape corresponding to the second engaging portion 932 of the cap member 9, allowing the second engaging portion 932 to pass through. In addition, the first engaging portion through hole 541H and the second engaging portion through hole 541I constitute the engaging portion through hole of this application, which is continuous with the shaft portion through hole 541G.

[0131] The engaging shaft insertion hole 541J is independent of the shaft insertion hole 541G, that is, it is not continuously provided with the shaft insertion hole 541G. Furthermore, the engaging shaft insertion hole 541J can accommodate the linear member 106A of the sealing member 10A described later, and the engaging shaft portion 107A of the sealing member can be inserted through it.

[0132] Furthermore, details regarding the installation method of the cap component 9 and the sealing component 10A relative to the mounted part 54A will be explained later.

[0133] [Fixed Seal Component 10A]

[0134] Figure 10 This is a front view showing the general outline of the sealing component 10A in this embodiment.

[0135] like Figure 10 As shown, the sealing member 10A is the same as the sealing member 10 in the first embodiment described above, and is a member that seals the through hole 24 of the cylindrical shell 2 and the cap member body 91 of the cap member 9. Furthermore, the sealing member 10A is formed of rubber or an elastic synthetic resin and is installed on the cap member 9. In this embodiment, the sealing member 10A has a sealing member body 104A, a linear member 106A, and a sealing member engaging shaft 107A.

[0136] The sealing component body 104A is arranged in an annular shape to surround the cap component shaft 92. Furthermore, in this embodiment, a protrusion 105A protruding into the cylindrical shell 2 is formed along the edge of the sealing component body 104A. When the sealing component body 104A is disposed between the cap component body 91 and the cylindrical shell 2, the protrusion 105A elastically deforms, thereby sealing the cap component body 91 and the through hole 24.

[0137] A linear component 106A is provided in a rod-like manner extending from the main body 91 of the cap component towards the cylindrical shell 2. Furthermore, the linear component 106A is disposed in the engagement shaft insertion hole 541J of the aforementioned mounting body 541F.

[0138] The locking shaft portion 107A of the sealing component is provided at the end of the linear component 106A and extends in a direction orthogonal to the linear component 106A. That is, the linear component 106A and the locking shaft portion 107A of the sealing component form a T-shape. In this embodiment, a protrusion 108A and a recess 109A are formed in the locking shaft portion 107A of the sealing component.

[0139] The protrusion 108A is provided at one end of the locking shaft portion 107A of the sealing member, and is formed such that its diameter decreases as it moves toward the end. That is, the protrusion 108A is conical.

[0140] The recess 109A is formed axially along the engagement shaft portion 107A at the other end of the fastening member engagement shaft portion 107A. Furthermore, the recess 109A allows for the insertion of tools such as screwdrivers.

[0141] [Installation method for cap component 9 and sealing component 10A]

[0142] Next, the installation method of the cap component 9 and the sealing component 10A will be explained.

[0143] Figures 11-14 This diagram shows the installation process of the cap component 9 and the sealing component 10A. Additionally, Figures 11-14 For ease of understanding, the cylindrical shell 2 and the circuit board 6 are omitted from the designation. Furthermore, in... Figure 13 , Figure 14 In, from and Figure 9 View cover component 5A from the opposite side.

[0144] First, the cylindrical shell 2 is assembled in the same manner as in the first embodiment described above. And, as... Figure 11 As shown, with the main body 91 of the cap component protruding vertically toward the vertex 91A, in this state, the protrusion 108A of the locking shaft portion 107A of the sealing component is positioned at a position corresponding to the insertion hole 541J of the locking shaft portion.

[0145] Next, as Figure 12 As shown, with the protrusion 108A as the leading part, the retaining member engaging shaft portion 107A is inserted through the engaging shaft portion insertion hole 541J. At this time, a tool such as a screwdriver is inserted into the recess 109A of the retaining member engaging shaft portion 107A, and in this state, the protrusion 108A is inserted through the engaging shaft portion insertion hole 541J. Thus, the retaining member engaging shaft portion 107A can be easily inserted through the engaging shaft portion insertion hole 541J.

[0146] Next, as Figure 13 As shown, the shaft portion 92, the first engaging portion 931, and the second engaging portion 932 of the cap component can be inserted through the shaft portion insertion hole 541G, the first engaging portion insertion hole 541H, and the second engaging portion insertion hole 541I, respectively.

[0147] Next, as Figure 14As shown, the cap component 9 is rotated counterclockwise around the shaft portion 92. With the apex 91A of the cap component body 91 facing horizontally, the first engaging portion 931 engages with the engaging portion 541E. This restricts the counterclockwise rotation of the cap component 9. Furthermore, similar to the first embodiment described above, in this state, the first engaging portion 931 and the second engaging portion 932 engage with the mounting portion 54A. Therefore, in this state, the cap component 9 does not detach from the mounting portion 54A. In other words, the cap component 9 is axially supported on the mounting portion 54A in a position where the apex 91A protrudes vertically and horizontally.

[0148] Thus, in this embodiment, the cap component 9 and the sealing component 10A can be installed when the cylindrical shell 2 is assembled.

[0149] Figure 15 This is a diagram showing the installation status of the sealing component 10A.

[0150] like Figure 15 As shown, when the cap component 9 is rotated to a position where its apex 91A protrudes vertically, the first engaging portion 931 and the second engaging portion 932 can be removed from the mounting portion 54A. In this state, the linear component 106A is positioned in the engaging shaft insertion hole 541J, so the retaining member engaging shaft portion 107A engages with the mounting portion 54A. Therefore, even when the cap component 9 is removed from the mounting portion 54A, the retaining member 10A does not detach from the mounting portion 54A. Thus, when removing the cap component 9, it is possible to prevent the cap component 9 with the retaining member 10A attached from being lost.

[0151] In the above-described embodiment, the following effects can be achieved.

[0152] (5) In this embodiment, the cap component 9 has a cap component main body 91, a cap component shaft 92, a first engaging portion 931 and a second engaging portion 932. The cap component main body 91 is disposed on the outside of the cylindrical shell 2 and covers the through hole 24. The cap component shaft 92 is provided to extend from the bottom surface 91B of the cap component main body 91. The first engaging portion 931 and the second engaging portion 932 are provided to extend radially from the end of the cap component shaft 92. Furthermore, the sealing component 10A has a sealing component main body 104A, a linear component 106A, and a sealing component engaging shaft 107A. The sealing component main body 104A is arranged in a ring shape to surround the cap component shaft 92. The linear component 106A extends from the sealing component main body 104A. The sealing component engaging shaft 107A is located at the end of the linear component 106A and is arranged in a direction orthogonal to the linear component 106A. Furthermore, the mounting portion 54A, on which the cap component 9 can be detachably mounted, is provided with a shaft insertion hole 541G, a first engaging portion insertion hole 541H, a second engaging portion insertion hole 541I, and an engaging shaft insertion hole 541J. The aforementioned shaft insertion hole 541G is configured to allow the cap component shaft portion 92 to be inserted through. The aforementioned first engaging portion insertion hole 541H is configured to allow the first engaging portion 931 to be inserted through and is continuous with the shaft insertion hole 541G. The aforementioned second engaging portion insertion hole 541I is configured to allow the second engaging portion 932 to be inserted through and is continuous with the shaft insertion hole 541G. The aforementioned engaging shaft insertion hole 541J is provided with a linear component 106A, which allows the sealing component engaging shaft portion 107A to be inserted through. Therefore, in the first posture (vertical protrusion of 91A), the cap component 9 can be inserted into the shaft through hole 541G. Furthermore, in the second posture (horizontal protrusion of 91A), the first and second engaging portions 931 and 932 engage with the mounting portion 54A. That is, the cap component 9 is detachably mounted to the mounting portion 54A.

[0153] Here, the mounting portion 54A is provided with a locking shaft insertion hole 541J through which the locking shaft portion 107A of the sealing member can be inserted. Therefore, by first inserting the locking shaft portion 107A of the sealing member into the locking shaft insertion hole 541J, and then placing the wire-shaped member 106A in the locking shaft insertion hole 541J, the sealing member 10A can be mounted on the mounting portion 54A. At this time, the wire-shaped member 106A and the locking shaft portion 107A of the sealing member are orthogonal, so after placing the wire-shaped member 106A in the locking shaft insertion hole 541J, the locking shaft portion 107A of the sealing member engages with the mounting portion 54A. That is, even if the wire-shaped member 106A is pulled in the direction of removing the sealing member 10A, the locking shaft portion 107A of the sealing member cannot be easily pulled out from the mounting portion 54A. Therefore, if the sealing member 10A is installed on the mounting part 54A according to the above process while the cap member 9 is installed, the loss of the cap member 9 can be prevented.

[0154] That is, after assembling the cylindrical shell 2, even when the cap component 9 is installed, the linear component 106A that prevents the cap component 9 from being lost can be installed in the mounting portion 54A disposed inside the cylindrical shell 2. Therefore, even if the linear component is damaged after assembling the cylindrical shell 2, the sealing component 10A having the linear component 106A can be easily replaced.

[0155] (6) In this embodiment, when a tool such as a screwdriver is inserted into the recess 109A of the locking shaft portion 107A of the sealing component, the protrusion 108A of the locking shaft portion 107A of the sealing component can be inserted through the locking shaft portion through hole 541J. Therefore, the operation of inserting the locking shaft portion 107A of the sealing component through the locking shaft portion through hole 541J can be performed easily.

[0156] [Variation Example]

[0157] Furthermore, the present invention is not limited to the aforementioned embodiments, and variations and improvements within the scope of achieving the objectives of the present invention are also included in the present invention.

[0158] In the foregoing embodiments, the cylindrical shell 2 is formed in a cylindrical shape, but is not limited thereto. For example, the cylindrical shell may also be formed in a polygonal cylindrical shape.

[0159] In the foregoing embodiments, the cylindrical shell 2, the connector 3, and the retaining member 8 are made of metal, but are not limited thereto; for example, they may also be made of resin.

[0160] In the aforementioned embodiments, the cap member 9 is configured such that, viewed axially from the cap member shaft 92, it can rotate from a position protruding vertically from the apex 91A to a position protruding horizontally from the apex 91A in a counterclockwise rotation direction, but is not limited to this. For example, the cap member 9 can be configured such that, viewed axially from the cap member shaft 92, it can rotate from a position protruding vertically from the apex 91A to a position protruding horizontally from the apex 91A in a clockwise rotation direction.

[0161] In the aforementioned embodiments, the main body 91 of the cap component is formed into a pentagonal shape with a vertex 91A, but is not limited thereto. For example, the main body of the cap component may also be formed into a quadrilateral shape or a triangular shape. Furthermore, markings identifying the orientation of the first and second engaging portions may be marked on the main body of the cap component.

[0162] In the foregoing embodiments, the first engaging portion 931 and the second engaging portion 932 are of different sizes, but this is not a limitation. For example, the first engaging portion and the second engaging portion may also be of the same size.

[0163] In the foregoing embodiments, the mounting portions 54 and 54A are provided with engaging protrusions 543 and 543A that protrude into and engage with the through hole 24, but this is not a limitation. For example, the case in which the mounting portion does not have engaging protrusions is also included in the present invention.

[0164] In the first embodiment described above, the locking portion 103 of the sealing component is formed in a generally hemispherical shape, but is not limited thereto. For example, the locking portion of the sealing component may also be formed in a plate shape, as long as it can engage with the mounted portion.

[0165] In the second embodiment described above, the retaining member engaging shaft portion 107A is provided at the end of the linear member 106A in a direction orthogonal to the linear member 106A, but this is not a limitation. The retaining member engaging shaft portion can be provided in a direction intersecting with the linear member, configured such that the linear member can engage with the mounted portion when placed in the through hole of the engaging shaft portion.

[0166] In the aforementioned embodiments, the physical quantity measuring device 1 is configured to measure the pressure of the fluid being measured, but is not limited thereto. For example, it may also be configured to measure differential pressure or temperature.

Claims

1. A physical quantity measuring device, characterized in that, It comprises a cylindrical shell, sensor module, connector, cover component, circuit board, cap component, and sealing component. The aforementioned cylindrical shell has a through hole on its circumferential surface. The aforementioned sensor module is housed within the aforementioned cylindrical shell and detects physical quantities. The aforementioned connector, for mounting the aforementioned sensor module, is configured to cover one opening of the aforementioned cylindrical housing. The aforementioned cover component is configured to cover the opening on the other side of the aforementioned cylindrical shell. The aforementioned circuit board has an electronic circuit section for receiving signals detected by the aforementioned sensor module and an electronic adjustment section for adjusting the aforementioned electronic circuit section, and is housed in the aforementioned cylindrical shell. The aforementioned cap component is installed in a manner that covers the aforementioned through hole. The aforementioned sealing component secures the connection between the aforementioned through hole and the aforementioned cap component. The aforementioned electronic adjustment unit has an operable part disposed at a position corresponding to the aforementioned through hole. The aforementioned cover component has a circuit board support portion for supporting the aforementioned circuit board and a mounting portion for detachably mounting the aforementioned cap component. The aforementioned cap component includes a cap component body, a cap component shaft, and a cap component engaging portion. The main body of the aforementioned cap component is disposed on the outside of the aforementioned cylindrical shell, covering the aforementioned through hole. The aforementioned cap component shaft extends from the bottom surface of the aforementioned cap component body. The aforementioned cap component engaging portion is provided extending radially from the end of the aforementioned cap component shaft portion. The aforementioned sealing component includes a sealing component main body, a linear component, and a sealing component engaging portion. The aforementioned sealing component body is arranged in a ring shape, configured to surround the aforementioned cap component shaft portion. The aforementioned linear component extends from the main body of the aforementioned sealing component. The aforementioned locking part of the sealing component is located at the end of the aforementioned linear component. The aforementioned mounting portion is provided with a shaft insertion hole, a locking insertion hole, and a groove. The aforementioned shaft insertion hole is configured to allow the aforementioned cap component shaft to be inserted through. The aforementioned engaging part through hole is configured to allow the aforementioned cap component engaging part to pass through, and is continuous with the aforementioned shaft part through hole. The aforementioned linear component is disposed in the aforementioned groove portion, and is continuous with the aforementioned shaft portion through hole. The aforementioned cap component is rotatably supported on the aforementioned mounting portion in two orientations: a first orientation and a second orientation. In the first orientation, the cap component's engaging portion can pass through the engaging portion's through hole. In the second orientation, the cap component's engaging portion engages with the aforementioned mounting portion. In the aforementioned first posture, compared to the aforementioned engagement portion of the cap component, the aforementioned linear component is positioned on the rotational direction side when viewed from the direction of the aforementioned cap component shaft portion, rotating from the aforementioned first posture to the aforementioned second posture.

2. A physical quantity measuring device, characterized in that, It comprises a cylindrical shell, sensor module, connector, cover component, circuit board, cap component, and sealing component. The aforementioned cylindrical shell has a through hole on its circumferential surface. The aforementioned sensor module is housed within the aforementioned cylindrical shell and detects physical quantities. The aforementioned connector, for mounting the aforementioned sensor module, is configured to cover one opening of the aforementioned cylindrical housing. The aforementioned cover component is configured to cover the opening on the other side of the aforementioned cylindrical shell. The aforementioned circuit board has an electronic circuit section for receiving signals detected by the aforementioned sensor module and an electronic adjustment section for adjusting the aforementioned electronic circuit section, and is housed in the aforementioned cylindrical shell. The aforementioned cap component is installed in a manner that covers the aforementioned through hole. The aforementioned sealing component secures the connection between the aforementioned through hole and the aforementioned cap component. The aforementioned electronic adjustment unit has an operable part disposed at a position corresponding to the aforementioned through hole. The aforementioned cover component has a circuit board support portion for supporting the aforementioned circuit board and a mounting portion for detachably mounting the aforementioned cap component. The aforementioned cap component includes a cap component body, a cap component shaft, and a cap component engaging portion. The main body of the aforementioned cap component is disposed on the outside of the aforementioned cylindrical shell, covering the aforementioned through hole. The aforementioned cap component shaft extends from the bottom surface of the aforementioned cap component body. The aforementioned cap component engaging portion is provided extending radially from the end of the aforementioned cap component shaft portion. The aforementioned sealing component includes a sealing component body, a linear component, and a sealing component engaging shaft. The aforementioned sealing component body is arranged in a ring shape, configured to surround the aforementioned cap component shaft portion. The aforementioned linear component extends from the main body of the aforementioned sealing component. The aforementioned locking component's engaging shaft portion is located at the end of the aforementioned linear component and is arranged in a direction intersecting the aforementioned linear component. The aforementioned mounting portion is provided with a shaft insertion hole, a locking part insertion hole, and a locking shaft insertion hole. The aforementioned shaft insertion hole is configured to allow the aforementioned cap component shaft to be inserted through. The aforementioned engaging part through hole is configured to allow the aforementioned cap component engaging part to pass through, and is continuous with the aforementioned shaft part through hole. The aforementioned linear component is arranged in the through hole of the aforementioned engaging shaft portion, allowing the aforementioned sealing component to be inserted through the engaging shaft portion. The aforementioned cap component is rotatably supported on the aforementioned mounting portion in two orientations: a first orientation and a second orientation. In the first orientation, the cap component's engaging portion can pass through the engaging portion's through hole. In the second orientation, the cap component's engaging portion engages with the aforementioned mounting portion. At one end of the aforementioned retaining component engaging the shaft portion, a protrusion is formed that decreases in diameter as it moves toward the end. At the other end of the aforementioned sealing component engaging the shaft portion, a recess is formed along the axial direction. In the aforementioned mounting portion, a engaging protrusion is provided that protrudes into the aforementioned through hole and engages with the aforementioned through hole.

3. The physical quantity measuring device as described in claim 1, characterized in that, In the aforementioned mounting portion, a engaging protrusion is provided that protrudes into the aforementioned through hole and engages with the aforementioned through hole.

4. The physical quantity measuring device as described in claim 1 or 2, characterized in that, The aforementioned cap component has a first engaging portion and a second engaging portion. The second engaging portion is disposed on the side opposite to the first engaging portion, separated from the axial portion of the aforementioned cap component, and is different in size from the first engaging portion. The aforementioned engaging portion through hole has a first engaging portion through hole and a second engaging portion through hole. The first engaging portion through hole corresponds to the first engaging portion. The second engaging portion through hole is disposed on the opposite side of the first engaging portion through hole, across the aforementioned shaft portion through hole, and corresponds to the second engaging portion.

5. The physical quantity measuring device as described in claim 1 or 2, characterized in that, The main body of the aforementioned hat component is pentagonal in shape.

Images