CONNECTION FIELD

Abstract

A connection panel comprises: a disk-shaped base plate (1) to which a plurality of connectors (4) are attached, each having a first end projecting towards a first surface side and a second end projecting towards a second surface side, the disk-shaped base plate (1) having a first screw area (1a) on its outer circumferential surface; a fastening body (2) with a first cylindrical section (2a) and a flange (2b) formed integrally with the first cylindrical section (2a) at a second end of the first cylindrical section (2a), the flange (2b) being attached to an edge of an opening formed in a structure that screens an interior from an exterior, and with a second screw area (2d) at a first end of an outer circumferential surface of the first cylindrical section (2a);and a retaining body (3) with a third screw area (3c) into which the first screw area (1a) of the base plate (1) is screwed at a first end of an inner circumferential surface thereof, and a fourth screw area (3d) into which the second screw area (2d) of the fastening body (2) is screwed at a second end of the inner circumferential surface, and with a second cylindrical section (3a) whose central axis coincides with a central axis of the first cylindrical section (2a) of the fastening body (2).

Description

FIELD OF TECHNOLOGY

[0001] The present disclosure relates to a terminal panel attached to a structure that shields an interior from an exterior and has a plurality of connectors. STATE OF THE ART

[0002] Patent Literature 1 discloses a screw connector in which male and female screw structures with different diameters are screwed together by a connection fixture of a screw structure connecting the screw structures. In order to connect the outside and inside of a shielded enclosed space, such as an anechoic chamber, through a plurality of signal cables or the like, it is considered that instead of individually attaching a plurality of connectors to a structure that shields the inside from the outside, such asa wall surface for shielding, the inside and the outside of the structure are connected to each other by a plurality of signal cables or the like, wherein a shielding property (shielding performance) is ensured by forming an opening in the structure and attaching a terminal panel having a plurality of connectors to the opening of the structure. REFERENCE LISTPATENT LITERATURE

[0003] Patent Literature 1: JP 07-130427 A SUMMARY OF THE INVENTIONTECHNICAL PROBLEM

[0004] Even if the majority of connectors in the terminal panel fixed to the opening of the structure are the screw-fixing connectors disclosed in Patent Literature 1, the fixing of the connectors is improved, but the following points are desirable as the terminal panel.

[0005] That is, it is desirable to ensure a shielding property when the terminal panel is attached to the opening of the structure, and to easily perform the work of detaching the terminal panel from the structure and the work of attaching the detached terminal panel to the structure when performing maintenance of cables connected to the plurality of connectors.

[0006] The present disclosure has been made in view of the above points, and an object of the present disclosure is to obtain a terminal panel that ensures a shielding property (shielding performance) and facilitates the work of detaching a base plate to which a plurality of connectors are attached and the work of attaching the detached base plate. SOLUTION TO THE TASK

[0007] A terminal panel according to the present disclosure comprises: a base plate having a disk shape to which a plurality of connectors are attached, the plurality of connectors each having a first end protruding toward a first surface side of the base plate and a second end protruding toward a second surface side of the base plate, the base plate having a first screw portion on its outer peripheral surface; a fastening body having a first cylindrical portion and a flange formed integrally with the first cylindrical portion at a second end of the first cylindrical portion, the flange being configured to be attached to an edge of an opening formed in a structure that shields an inside from an outside and having a second screw portion at a first end of an outer peripheral surface of the first cylindrical portion;and a holding body having a third screw portion into which the first screw portion of the base plate is screwed at a first end of an inner peripheral surface of the holding body, and a fourth screw portion into which the second screw portion of the fastening body is screwed at a second end of the inner peripheral surface, and having a second cylindrical portion whose central axis coincides with a central axis of the first cylindrical portion of the fastening body; ADVANTAGEOUS EFFECTS OF THE INVENTION

[0008] According to the present disclosure, since the base plate to which the plurality of connectors are fixed is fixed to the fixing body fixed to a surface of the structure via the holding body, the work for detaching the base plate from the fixing body and the work for fixing the base plate to the fixing body are easy while ensuring the shielding performance for the structure. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a terminal panel according to a first embodiment. Fig. 2 is a cross-sectional view taken along a line AA in Fig. 1. Fig. 3 is a perspective view showing a holding body in the terminal panel according to the first embodiment. Fig. 4 is an enlarged main part cross-sectional view showing an arrangement state of the terminal panel according to the first embodiment before screwing. Fig. 5 is an enlarged main part cross-sectional view showing an arrangement state of the terminal panel according to the first embodiment in a middle stage of screwing. Fig. 6 is an enlarged main part cross-sectional view showing a screwed state of the terminal panel according to the first embodiment after screwing. Fig. 7 is an enlarged main part cross-sectional view showing a pressing state of the terminal panel according to the first embodiment after screwing. Fig. 8 is an enlarged main part cross-sectional view showing a pressing state of a terminal block according to a second embodiment after screwing. Fig. 9 is an enlarged main part cross-sectional view showing a pressing state of a terminal block according to a third embodiment after screwing. Fig. 10 is an enlarged main part cross-sectional view showing a pressing state of a terminal board according to a fourth embodiment after screwing. Fig. 11 is an enlarged main part cross-sectional view showing a pressing state of a terminal board according to a fifth embodiment after screwing. Fig. 12 is an enlarged main part cross-sectional view showing an arrangement state of a terminal board according to a sixth embodiment before screwing. Fig. 13 is an enlarged main part cross-sectional view showing an arrangement state of the terminal panel according to the sixth embodiment in a middle stage of screwing. Fig. 14 is an enlarged main part cross-sectional view showing a screwed state of the terminal panel according to the sixth embodiment after screwing. Fig. 15 is an enlarged main part cross-sectional view showing a screwed state of a terminal panel according to a seventh embodiment after screwing. Fig. 16 is an enlarged main part cross-sectional view showing a screwed state of a terminal panel according to an eighth embodiment after screwing. Fig. 17 is an enlarged main part cross-sectional view showing a screwed state of a terminal panel according to a ninth embodiment after screwing. Fig. 18 is an enlarged main part cross-sectional view showing a screwed state of a terminal panel according to a tenth embodiment after screwing. DESCRIPTION OF THE EMBODIMENTSFirst embodiment.

[0009] A connection panel according to a first embodiment is described with reference to the Fig. 1 to 7 described.

[0010] As in the Fig. 1 and Fig. 2, the connection panel comprises a base plate 1, a fastening body 2, a holding body 3 and a plurality of connectors 4.

[0011] The terminal panel is attached to a structure (not shown), which is a wall that shields the interior of a shielded enclosed space, such as an anechoic chamber, from the outside. When the terminal panel is attached to a cylindrical through-hole formed in the wall forming the structure, in the first embodiment, a front surface side is defined as the outside of the anechoic chamber and a rear surface side is defined as the inside of the anechoic chamber.

[0012] The base plate 1 is a disc-shaped conductive member having a first screw portion 1a formed on its outer peripheral surface.

[0013] The first screw area 1a is designed as a parallel external thread screw.

[0014] To the base plate 1, the plurality of connectors 4 are fixed, each having a first end projecting toward one side of the surface (hereinafter referred to as the first surface) which is the front surface side, and a second end projecting toward the other side of the surface (hereinafter referred to as the second surface) which is the rear surface side.

[0015] Although not shown, an opening connecting the inside and outside of the anechoic chamber is formed in the base plate 1 like a through pipe passing through the base plate 1 from the front to the back.

[0016] Each of the plurality of connectors 4 has an outer molding formed of a conductive element for shielding, is fixed to the base plate 1 at four corners with screw connections, and is set to the same potential as the base plate 1, ie, a ground potential.

[0017] In addition, a first harness cable (not shown), such as a signal cable, is connected to a first terminal arranged at the first end of each of the plurality of connectors 4, and a second harness cable (not shown), such as a signal cable, is connected to a second terminal arranged at the second end of each of the plurality of connectors 4.

[0018] Each of the plurality of connectors 4 is an N-type connector that electrically connects the first harness cable and the second harness cable arranged outside and inside the wall constituting the structure of the anechoic chamber.

[0019] For example, the number of connectors 4 is four, but is not limited to four.

[0020] Furthermore, each of the connectors 4 is fixed to the base plate 1 by screw clamping, but a periphery of each of the connectors 4 may be formed into a screw structure, and each of the connectors 4 may be screwed into and fixed to the base plate 1.

[0021] The fastening body 2 has a first cylindrical portion 2a and a first flange 2b formed integrally with the first cylindrical portion 2a at a second end of the first cylindrical portion 2a. The fastening body 2 is a conductive element and is grounded.

[0022] The first cylindrical portion 2a is inserted from the inside of the structure into an opening formed in the structure, with its outer peripheral surface in close contact with the opening.

[0023] The first flange 2b has a plurality of bolt through holes 2c formed at equal intervals along a circumference, and is fixed at many points by bolts passing through the bolt through holes 2c at an edge of the opening formed in the structure, that is, at an edge on an inner surface side of the opening formed in the wall constituting the structure.

[0024] It should be noted that the attachment of the attachment body 2 to the structure is not limited to a configuration in which the first cylindrical portion 2a is inserted into the opening formed in the structure with an outer peripheral surface thereof in close contact with the opening, and the first flange 2b is fixed to the edge on the inner surface side of the opening.

[0025] For example, the attachment of the attachment body 2 to the structure may have a configuration in which an inner diameter of the first cylindrical portion 2a is equal to an inner diameter of the opening formed in the structure, the first cylindrical portion 2a is disposed outside the structure in communication with the opening, and the first flange 2b is attached to an edge on an outer surface side of the opening.

[0026] The first cylindrical portion 2a has a second screw portion 2d formed at a first end of the outer peripheral surface on a side opposite to the first flange 2b.

[0027] The second screw area 2d is designed as a parallel screw with external thread.

[0028] The first cylindrical portion 2a has a first end surface in close contact with a second surface of the base plate 1 at the first end thereof, and has a flat or smooth circumferential surface 2e on an outer circumferential surface between the first end surface and the second screw portion 2d.

[0029] The part of the first cylindrical portion 2a having the flat peripheral surface 2e serves as a buffer body when the first end surface of the first cylindrical portion 2a and the second surface of the base plate 1 are firmly in close contact with each other.

[0030] That is, the part of the first cylindrical portion 2a having the flat peripheral surface 2e serves as a buffer body that exerts a compressive force on the first cylindrical portion 2a in a second direction along a central axis and exerts a compressive force on the base plate 1 in a first direction along the central axis.

[0031] Since the fixing body 2 is fixed to the opening formed in the structure and grounded, a shielding property is ensured, and the second harness cable inserted into an interior is shielded by the first cylindrical portion 2a.

[0032] The holding body 3 connects the base plate 1 to the fastening body 2 by being screwed into the base plate 1 and the fastening body 2 between the base plate 1 and the fastening body 2.

[0033] The holding body 3 is a conductive element that is earthed by the fastening body 2 and earths the base plate 1.

[0034] Since the base plate 1, the fixing body 2 and the holding body 3 are electrically connected and grounded, the shielding performance is satisfactory.

[0035] As in the Fig. 2 and Fig. 3, the holding body 3 has a second cylindrical portion 3a connected to the first cylindrical portion 2a of the fastening body 2, and a second flange 3b formed integrally with the second cylindrical portion 3a at a first end of the second cylindrical portion 3a.

[0036] A central axis of the second cylindrical portion 3a of the holding body 3 coincides with a central axis of the first cylindrical portion 2a of the fastening body 2.

[0037] The holding body 3 has a third screw portion 3c into which the first screw portion 1a of the base plate 1 is screwed at a first end of its inner peripheral surface, and a fourth screw portion 3d into which the second screw portion 2d of the fastening body 2 is screwed at a second end of the inner peripheral surface.

[0038] The holding body 3 has a flat circumferential surface 3e on the inner circumferential surface between the third screw area 3c and the fourth screw area 3d.

[0039] The portion of the holding body 3 with the flat circumferential surface 3e is a boundary between the third screw region 3c and the fourth screw region 3d.

[0040] The third screw portion 3c in the holding body 3 is formed as a parallel internal thread screw extending from a first end surface of the third screw portion 3c to a first end of the flat peripheral surface 3e.

[0041] The fourth screw portion 3d in the holding body 3 is formed as a parallel internal screw extending from a second end of the flat peripheral surface 3e to a second end surface of the fourth screw portion 3d.

[0042] The third screw area 3c has the same screw size as the first screw area 1a of the base plate 1.

[0043] The fourth screw area 3d has the same screw size as the second screw area 2d of the fastening body 2.

[0044] The screwing of the first screw area 1a in the base plate 1 and the third screw area 3c in the holding body 3 takes place in the opposite direction to the screwing of the second screw area 2d in the fastening body 2 and the fourth screw area 3d in the holding body 3.

[0045] That is, the screw connection of the first screw area 1a and the third screw area 3c as well as the screw connection of the second screw area 2d and the fourth screw area 3d are in the relationship of a left screw and a right screw.

[0046] The screw diameter of the first screw region 1a and the third screw region 3c is the same as the screw diameter of the second screw region 2d and the fourth screw region 3d.

[0047] The thread pitch of the first screw area 1a and the third screw area 3c is shorter than the thread pitch of the second screw area 2d and the fourth screw area 3d.

[0048] The thread pitch of the first screw region 1a and the third screw region 3c may be equal to or greater than the thread pitch of the second screw region 2d and the fourth screw region 3d.

[0049] Since the thread pitch of the first screw portion 1a and the third screw portion 3c is preferably shorter than the thread pitch of the second screw portion 2d and the fourth screw portion 3d, the following description will be given using an example in which the thread pitch of the first screw portion 1a and the third screw portion 3c is shorter than the thread pitch of the second screw portion 2d and the fourth screw portion 3d.

[0050] Next, with reference to the Fig. 4 to 6 describe how the connection panel according to the first embodiment is attached to the opening, which is the through-hole of the wall constituting the structure in the anechoic chamber.

[0051] First, the fastening body 2 is attached to the opening in the wall.

[0052] That is, the first cylindrical portion 2a of the fixing body 2 is inserted into the opening from an inner side of the wall with its outer peripheral surface in close contact with the opening, and the first flange 2b is fixed to an inner surface of the wall, which is an edge of the opening, by screw clamping by passing a screw through the screw through hole 2c.

[0053] Next, as in Fig. 4, an open end of the holding body 3 at a second end side and an open end of the fastening body 2 at a first end side face each other so that their central axes coincide, the fourth screw portion 3d of the holding body 3 is pressed against the second screw portion 2d of the fastening body 2 and the holding body 3 is rotated clockwise.

[0054] Then, the fourth screw portion 3d is screwed into the second screw portion 2d and the holding body 3 is temporarily fastened to the fastening body 2.

[0055] In this state, a back surface which is a second end side of the base plate 1 and an open end of the holding body 3 at a first end side are faced to each other so that their center axes coincide, the first screw portion 1a of the base plate 1 is pressed against the third screw portion 3c of the holding body 3, and the holding body 3 is rotated clockwise.

[0056] Then, the third screw portion 3c is screwed into the first screw portion 1a, and the base plate 1 is temporarily fixed to the holding body 3.

[0057] Although in Fig. 4 not shown, the second harness cable is connected to a second terminal located at the second end of each of the plurality of connectors 4 attached to the base plate 1.

[0058] In this state, only the holding body 3 is rotated clockwise without rotating the base plate 1.

[0059] Fig. 5 shows an arrangement state of the base plate 1, the fixing body 2 and the holding body 3 in a middle phase of the clockwise rotation of the holding body 3.

[0060] Since the fourth screw portion 3d and the second screw portion 2d each have a right screw structure, the holding body 3 moves to a second end side of the fastening body 2. In other words, a first end surface of the first cylindrical portion 2a in the fastening body 2 moves relatively toward a second surface of the base plate 1, ie, in the direction of an arrow X in Fig. 5.

[0061] Since the first screw portion 1a and the third screw portion 3c each have a left screw structure, the base plate 1 moves to a first end side of the fastening body 2, ie in the direction of the arrow Y in Fig. 5.

[0062] In short, when only the holding body 3 is rotated clockwise without rotating the base plate 1, the holding body 3 and the base plate 1 move toward the second end side of the fixing body 2 in a direction in which the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 approach each other.

[0063] At this time, when a thread pitch of the first screw portion 1a and the third screw portion 3c is shorter than a thread pitch of the second screw portion 2d and the fourth screw portion 3d, a moving distance of the base plate 1 with respect to the holding body 3 can be shorter than a moving distance of the holding body 3 with respect to the fixing body 2, and the second surface of the base plate 1 can be brought into close contact with the first end surface of the first cylindrical portion 2a in the fixing body 2 without moving the base plate 1 deep into the holding body 3.

[0064] Since the base plate 1 is not rotated when the base plate 1 is fixed, the second cable connected to each of the plurality of connectors 4 is not twisted.

[0065] Fig. 6 shows a final phase in which the base plate 1 is attached to the fastening body 2 via the holding body 3.

[0066] As in Fig. 6, the second surface of the base plate 1 is in close contact with the first end surface of the first cylindrical portion 2a in the fastening body 2.

[0067] If only the holding body 3 is further rotated slightly clockwise in the state of close contact, as shown in Fig. 7, the part of the first cylindrical portion 2a in the fastening body 2 having the flat peripheral surface 2e exerts a compressive force on the first cylindrical portion 2a in a second direction along the central axis, ie a direction of an arrow A1 in Fig. 7, and exerts a compressive force on the base plate 1 in a first direction along the central axis, ie a direction of an arrow B1 in Fig. 7, by a repulsion force of the portion of the first cylindrical portion 2a.

[0068] As a result, the second screw portion 2d of the first cylindrical portion 2a in the fastening body 2 exerts a compressive force on the fourth screw portion 3d of the holding body 3 in a second direction, ie in a direction of an arrow A2 in Fig. 7, and the first screw portion 1a of the base plate 1 exerts a compressive force on the third screw portion 3c of the holding body 3 in a first direction, ie in a direction of an arrow B2 in Fig. 7.

[0069] Therefore, the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 are firmly in close contact with each other, and the shielding performance between the base plate 1 and the holding body 3, as well as the shielding performance between the fixing body 2 and the holding body 3, are high. This achieves high shielding performance between the base plate 1 and the fixing body 2.

[0070] When only the holding body 3 is rotated clockwise, both the holding body 3 and the base plate 1 move to the second end side of the fixing body 2, and the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 move forward in a direction relative to each other because the screwing of the first screw portion 1a in the base plate 1 and the third screw portion 3c in the holding body 3 and the screwing of the second screw portion 2d in the fixing body 2 and the fourth screw portion 3d in the holding body 3 are in opposite directions to each other, that is, have a relationship of a left screw and a right screw.

[0071] By rotating the holding body 3, the base plate 1 is fastened to the fastening body 2 via the holding body 3, so that the fastening is easy.

[0072] In this way, the base plate 1 is fixed to the fixing body 2 via the holding body 3, and then the first harness cable is connected to the first terminal arranged on a first end side of each of the plurality of connectors 4 fixed to the base plate 1.

[0073] Next, it will be described how the base plate 1 can be detached from the fixing body 2 when performing maintenance work such as inspection or repair of the second harness cable or inspection or repair of the plurality of connectors 4 or the like, or work such as changing the connection of the second harness cable, replacing the connectors 4, laying a new second harness cable, or removing the second harness cable.

[0074] Removing the base plate 1 from the fastening body 2 is essentially the opposite of the attachment of the base plate 1 to the fastening body 2 described above.

[0075] First, the first harness cable connected to the first terminal of each of the plurality of connectors 4 is disconnected.

[0076] Since a surface of the base plate 1, which is a first end side, is an exposed surface, it is easy to detach the first harness cable from the first terminal of the connector 4.

[0077] At this time, all the first wire harnesses can be removed from the first terminals of the connectors 4, or only the first wire harness cables that are least needed at the time of performing maintenance or the like can be removed.

[0078] Even disconnecting the minimum required first wiring harness cable does not affect subsequent work.

[0079] Then only the holding body 3 is turned counterclockwise, i.e. in the opposite direction to that used for installation, without turning the base plate 1.

[0080] Then both the holding body 3 and the base plate 1 move from the Fig. 6, to the second end side of the fastening body 2, the first screw portion 1a of the base plate 1 is unscrewed from the third screw portion 3c of the holding body 3, and the base plate 1 can be detached from the holding body 3.

[0081] Therefore, the second harness cable can be detached from the second terminal of the connector 4, and maintenance work can be performed on the second harness cable and the plurality of connectors 4.

[0082] The holding body 3 can remain temporarily attached to the fastening body 2 or can be released from the fastening body 2 by turning the holding body 3 counterclockwise.

[0083] By simply rotating the holding body 3, the base plate 1 can be detached from the holding body 3, and even if there is a certain distance between the side of the first flange 2b of the fixing body 2 and a rear surface of the base plate 1, detachment of the base plate 1 is easy, and the work before maintenance work is easy.

[0084] After completion of the maintenance work, it is only necessary to attach the base plate 1 via the holding body 3 in the same way as when attaching it to the fastening body 2.

[0085] Note that in the first embodiment described above, the first screw portion 1a and the third screw portion 3c each have a left screw structure, and the second screw portion 2d and the fourth screw portion 3d each have a right screw structure. Alternatively, the first screw portion 1a and the third screw portion 3c may each have a right screw structure, and the second screw portion 2d and the fourth screw portion 3d may each have a left screw structure. In short, the screw connection of the first screw portion 1a and the third screw portion 3c and the screw connection of the second screw portion 2d and the fourth screw portion 3d only need to have a left screw-right screw relationship.

[0086] As described above, since the terminal panel according to the first embodiment has a configuration in which the disc-shaped base plate 1, having the first screw portion 1a formed on its outer peripheral surface, is fixed to the fixing body 2 via the holding body 3 having the third screw portion 3c into which the first screw portion 1a is screwed on its inner peripheral surface and the fourth screw portion 3d into which the second screw portion 2d of the fixing body 2 is screwed on the inner peripheral surface, the base plate 1 can be detached from the fixing body 2 and the base plate 1 can be fixed to the fixing body 2 by a simple operation of rotating the holding body 3, and the work of detaching and fixing is easy.

[0087] Since the base plate 1 can be detached from the fixing body 2 without rotating the base plate 1, the base plate 1 can be detached from the fixing body 2 without detaching the second harness cable arranged on a side where the base plate 1 is not exposed from the connector 4.

[0088] Since the base plate 1, the fastening body 2 and the holding body 3 are each a conductive element, good shielding can be ensured.

[0089] Since the first cylindrical portion 2a in the fastening body 2 has its first end surface in close contact with the second surface of the base plate 1 at its first end and has the smooth or flat circumferential surface 2e on its outer peripheral surface between the first end surface and the second screw portion 2d, the portion of the first cylindrical portion 2a having the smooth circumferential surface 2e serves as a buffer body when the first end surface of the first cylindrical portion 2a and the second surface of the base plate 1 are firmly connected to each other, and serves as a buffer body that exerts a compressive force on the first cylindrical portion 2a in the second direction along the central axis and exerts a compressive force on the base plate 1 in the first direction along the central axis.

[0090] As a result, the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 are firmly in close contact with each other, and the shielding performance between the base plate 1 and the holding body 3, as well as the shielding performance between the fixing body 2 and the holding body 3, are high. This achieves high shielding performance between the base plate 1 and the fixing body 2.

[0091] In addition, when a thread pitch of the first screw portion 1a of the base plate 1 and the third screw portion 3c of the holding body 3 is shorter than a thread pitch of the second screw portion 2d of the fixing body 2 and the fourth screw portion 3d of the holding body 3, a moving distance of the base plate 1 can be shorter than a moving distance of the holding body 3, the base plate 1 does not need to move deeply into the holding body 3, and the work of connecting the first harness cable to the first terminal arranged on a first end side of each of the plurality of connectors 4 attached to the base plate 1 can be easily performed. Second embodiment.

[0092] A connection panel according to a second embodiment is described with reference to Fig. 8 described.

[0093] In the terminal panel according to the first embodiment, the first cylindrical portion 2a in the fixing body 2 has a first end surface in close contact with a second surface of the base plate 1 at its first end, a part having the smooth circumferential surface 2e is formed on an outer circumferential surface thereof between the first end surface and the second screw portion 2d, and the part having the smooth circumferential surface 2e has a function as a buffer body, while in the terminal panel according to the second embodiment, a third cylindrical portion protruding from a second surface of the base plate 1 to the second surface side and having an end surface in close contact with the first end surface of the first cylindrical portion 2a in the fixing body 2 has the function as a buffer body.

[0094] In other respects, the terminal panel according to the second embodiment has the same or similar configuration as the terminal panel according to the first embodiment.

[0095] It should be noted that in Fig. 8 the same reference numerals as in the Fig. 1 to 7 denote the same or corresponding parts.

[0096] As in Fig. 8, the base plate 1 has a third cylindrical portion 1b whose central axis coincides with the central axis of the first cylindrical portion 2a in the fastening body 2 and whose thickness is the same as the thickness of the first cylindrical portion 2a.

[0097] The third cylindrical portion 1b protrudes from a second surface of the base plate 1 to the second surface side and has an end surface in close contact with a first end surface of the first cylindrical portion 2a in the fastening body 2.

[0098] The second screw region 2d in the first cylindrical portion 2a extends to the first end surface of the first cylindrical portion 2a.

[0099] The third cylindrical portion 1b in the base plate 1 serves as a buffer body when the end surface of the third cylindrical portion 1b and the first end surface of the first cylindrical portion 2a are in close contact with each other.

[0100] That is, the third cylindrical portion 1b serves as a buffer body that exerts a compressive force on the first cylindrical portion 2a in a second direction along the central axis, ie, a direction of an arrow A1 in Fig. 8, and exerts a compressive force on the base plate 1 in a first direction along the central axis, ie a direction of an arrow B1 in Fig. 8.

[0101] As a result, the second screw portion 2d of the fastening body 2 exerts a compressive force on the fourth screw portion 3d of the holding body 3 in a second direction, ie in a direction of an arrow A2 in Fig. 8, and the first screw portion 1a of the base plate 1 exerts a compressive force on the third screw portion 3c of the holding body 3 in a first direction, ie in a direction of an arrow B2 in Fig. 8, by a repulsive force of the third cylindrical section 1b in the base plate 1.

[0102] Therefore, the end surface of the third cylindrical portion 1b in the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 are firmly in close contact with each other, and the shielding performance between the base plate 1 and the fixing body 3, as well as the shielding performance between the fixing body 2 and the fixing body 3, are high. This achieves high shielding performance between the base plate 1 and the fixing body 2.

[0103] Attaching the terminal panel according to the second embodiment to an opening which is a through-hole in a wall which is a structure in an anechoic chamber is basically the same as attaching the terminal panel according to the first embodiment.

[0104] That is, the fastening is carried out as follows.

[0105] The fastening body 2 is attached to the opening formed in the wall.

[0106] The holding body 3 is temporarily attached to the fastening body 2.

[0107] The base plate 1 is temporarily attached to the holding body 3.

[0108] In this state, only the holding body 3 is rotated clockwise without rotating the base plate 1.

[0109] When only the holding body 3 is rotated clockwise without rotating the base plate 1, the holding body 3 and the base plate 1 move to a second end side of the fixing body 2 in a direction in which the end surface of the third cylindrical portion 1b in the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 approach each other.

[0110] If only the holding body 3 is further rotated slightly clockwise in a state in which the end surface of the third cylindrical portion 1b in the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 are in close contact with each other, as shown in Fig. 8, the second screw portion 2d of the first cylindrical section 2a in the fastening body 2 exerts a compressive force on the fourth screw portion 3d of the holding body 3 in a second direction, ie in the direction of the arrow A2 in Fig. 8, and the first screw portion 1a of the base plate 1 exerts a compressive force on the third screw portion 3c of the holding body 3 in a first direction, ie in the direction of the arrow B2 in Fig. 8, by a repulsive force of the third cylindrical section 1b.

[0111] Therefore, the end surface of the third cylindrical portion 1b in the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 are firmly in close contact with each other, and the shielding performance between the base plate 1 and the fixing body 3, as well as the shielding performance between the fixing body 2 and the fixing body 3, are high. This achieves high shielding performance between the base plate 1 and the fixing body 2.

[0112] The manner in which the base plate 1 is detached from the fixing body 2 when performing maintenance work such as the inspection, repair, or replacement of the second wiring harness cable or the inspection, repair, or replacement of the plurality of connectors 4 is basically the opposite of the above-described manner in which the base plate 1 is attached to the fixing body 2, and is basically the same as the manner in which the base plate 1 is detached from the fixing body 2 in the terminal panel according to the first embodiment. Therefore, a description will be omitted.

[0113] As described above, the terminal panel according to the second embodiment differs from the terminal panel according to the first embodiment in the buffer body, but has a similar effect to the terminal panel according to the first embodiment. Third embodiment.

[0114] A connection panel according to a third embodiment is described with reference to Fig. 9 described.

[0115] The terminal panel according to the third embodiment differs from the terminal panel according to the first embodiment in that the screw diameter of the first screw portion 1a of the base plate 1 and the third screw portion 3c of the holding body 3 is larger than the screw diameter of the second screw portion 2d of the fastening body 2 and the fourth screw portion 3d of the holding body 3 in the terminal panel according to the third embodiment, while the screw diameter of the first screw portion 1a of the base plate 1 and the third screw portion 3c of the holding body 3 is the same as the screw diameter of the second screw portion 2d of the fastening body 2 and the third screw portion 3c of the holding body 3 in the terminal panel according to the first embodiment, and has the same or similar configuration in the other points.

[0116] It should be noted that in Fig. 9 the same reference numerals as in Fig. 1 to 7 refer to the same or corresponding parts.

[0117] As in Fig. 9, the diameter of an outer circumferential circle enclosing the first screw portion 1a in the base plate 1 is larger than the diameter of an outer circumferential circle enclosing the second screw portion 2d of the first cylindrical portion 2a in the fastening body 2.

[0118] The second screw region 2d in the first cylindrical portion 2a of the fastening body 2 extends to a first end surface of the first cylindrical portion 2a.

[0119] The first end surface of the first cylindrical part 2a of the fastening body 2 is in close contact with a second surface of the base plate 1.

[0120] In a state where the first end surface of the first cylindrical portion 2a of the fixing body 2 and the second surface of the base plate 1 are in close contact with each other, a first end in the first cylindrical portion 2a of the fixing body 2, which is not screwed into the fourth screw portion 3d of the holding body 3, serves as a buffer body.

[0121] That is, the first end in the first cylindrical portion 2a of the fastening body 2 serves as a buffer body which exerts a compressive force on the first cylindrical portion 2a in a second direction along the central axis, ie, a direction of an arrow A1 in Fig. 9, and exerts a compressive force on the base plate 1 in a first direction along the central axis, ie a direction of an arrow B1 in Fig. 9.

[0122] As a result, the second screw portion 2d of the first cylindrical portion 2a exerts a compressive force on the fourth screw portion 3d of the holding body 3 in a second direction, ie in a direction of an arrow A2 in Fig. 9, and the first screw portion 1a of the base plate 1 exerts a compressive force on the third screw portion 3c of the holding body 3 in a first direction, ie in a direction of an arrow B2 in Fig. 9, by a repulsive force of the first end in the first cylindrical portion 2a of the fastening body 2.

[0123] Therefore, the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 are firmly in close contact with each other, and the shielding performance between the base plate 1 and the holding body 3, as well as the shielding performance between the fixing body 2 and the holding body 3, are high. This achieves high shielding performance between the base plate 1 and the fixing body 2.

[0124] Also in the terminal panel according to the third embodiment, the attachment of the terminal panel and the detachment of the base plate 1 from the fixing body 2 are substantially the same as the attachment of the terminal panel and the detachment of the base plate 1 from the fixing body 2 in the first embodiment, so that a description is omitted.

[0125] The connection panel according to the third embodiment has a similar effect to the connection panel according to the first embodiment. Fourth embodiment.

[0126] A connection panel according to a fourth embodiment is described with reference to Fig. 10 described.

[0127] The terminal panel according to the fourth embodiment differs from the terminal panel according to the first embodiment in that the screw diameter of the second screw portion 2d of the fastening body 2 and the third screw portion 3c of the holding body 3 is larger than the screw diameter of the first screw portion 1a of the base plate 1 and the third screw portion 3c of the holding body 3 in the terminal panel according to the fourth embodiment, while the screw diameter of the first screw portion 1a of the base plate 1 and the third screw portion 3c of the holding body 3 is the same as the screw diameter of the second screw portion 2d of the fastening body 2 and the third screw portion 3c of the holding body 3 in the terminal panel according to the first embodiment, and has the same or similar configuration in the other points.

[0128] It should be noted that in Fig. 10 the same reference numerals as in Fig. 1 to 7 refer to the same or corresponding parts.

[0129] As in Fig. 10, the diameter of an outer circumferential circle enclosing the second screw portion 2d of the first cylindrical portion 2a in the fastening body 2 is larger than the diameter of an outer circumferential circle enclosing the first screw portion 1a in the base plate 1.

[0130] In the first cylindrical portion 2a of the fixing body 2, an extension portion 2f is formed which extends inward at a right angle from the part of the first cylindrical portion 2a having the flat peripheral surface 2e, and a lower portion of a first end surface of the extension portion 2f is in close contact with a second surface of the base plate 1.

[0131] The part of the first cylindrical portion 2a having the flat peripheral surface 2e and the extended portion 2f serve as a buffer body when the first end surface of the extended portion 2f and the second surface of the base plate 1 are firmly in close contact with each other.

[0132] That is, the part of the first cylindrical portion 2a having the flat peripheral surface 2e and the extending portion 2f serve as a buffer body that applies a compressive force to the first cylindrical portion 2a in a second direction along the central axis, ie, a direction of an arrow A1 in Fig. 10, and exerts a compressive force on the base plate 1 in a first direction along the central axis, ie a direction of an arrow B1 in Fig. 10, exercises.

[0133] As a result, the second screw portion 2d of the first cylindrical section 2a exerts a compressive force on the fourth screw portion 3d of the holding body 3 in a second direction, ie in the direction of the arrow A2 in Fig. 10, and the first screw portion 1a of the base plate 1 exerts a compressive force on the third screw portion 3c of the holding body 3 in a first direction, ie in the direction of the arrow B2 in Fig. 10, namely by a repulsive force of the part of the first cylindrical portion 2a with the flat peripheral surface 2e.

[0134] Therefore, a second end surface of the base plate 1 and a first end surface of the extending portion 2f of the first cylindrical portion 2a in the fixing body 2 are firmly in close contact with each other, and the shielding performance between the base plate 1 and the holding body 3, as well as the shielding performance between the fixing body 2 and the holding body 3, are high. This achieves high shielding performance between the base plate 1 and the fixing body 2.

[0135] Also in the terminal panel according to the fourth embodiment, the attachment of the terminal panel and the detachment of the base plate 1 from the fixing body 2 are substantially the same as the attachment of the terminal panel and the detachment of the base plate 1 from the fixing body 2 in the first embodiment, so that a description thereof is omitted.

[0136] The connection panel according to the third embodiment has a similar effect to the connection panel according to the first embodiment. Fifth embodiment.

[0137] A connection panel according to a fifth embodiment is described with reference to Fig. 11 described.

[0138] In the terminal panel according to the first embodiment, the first cylindrical portion 2a in the fixing body 2 has a first end surface in close contact with a second surface of the base plate 1 at its first end, a part with the smooth circumferential surface 2e is formed on an outer circumferential surface thereof between the first end surface and the second screw portion 2d, and the part with the straight or smooth circumferential surface 2e has a function as a buffer body, whereas in the terminal panel according to the fifth embodiment, a cylindrical elastic body arranged between the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a in close contact with both the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a has the function as a buffer body.

[0139] In other points, the terminal panel according to the fifth embodiment is the same as the terminal panel according to the first embodiment.

[0140] It should be noted that in Fig. 11 the same reference numerals as in Fig. 1 to 7 refer to the same or corresponding parts.

[0141] As in Fig. 11, an elastic body 5 has a first end surface firmly in close contact with a second surface of the base plate 1 and a second end surface firmly in close contact with a first end surface of the first cylindrical portion 2a of the fixing body 2.

[0142] The elastic body 5 is an elastic structure with flexibility and repulsive force, and is preferably a conductive elastic body. The conductive elastic body may be a well-known one, for example, a conductive elastic body made by mixing a conductor such as carbon black or metal powder into silicone rubber.

[0143] By using the conductive elastic body as the elastic body 5, the shielding performance is improved because the base plate 1 is electrically connected and grounded via the elastic body 5.

[0144] The second screw region 2d in the first cylindrical portion 2a extends to the first end surface of the first cylindrical portion 2a.

[0145] The holding body 3 has a flat circumferential surface 3e on the inner circumferential surface between the third screw area 3c and the fourth screw area 3d.

[0146] The width of the flat peripheral surface 3e is larger than the width of the elastic body 5, and the elastic body 5 is located at the center of the peripheral surface 3e in an axial direction in a state where the second surface of the base plate 1 and the first end surface of the first cylindrical part 2a are in close contact with each other via the elastic body 5.

[0147] The screwing of the third screw portion 3c of the holding body 3 and the first screw portion 1a of the base plate 1 is carried out in a direction opposite to the screwing of the fourth screw portion 3d of the holding body 3 and the second screw portion 2d of the first cylindrical portion 2a of the fastening body 2, and the third screw portion 3c and the fourth screw portion 3d are in the relationship of a left screw and a right screw.

[0148] The thread pitch of the first screw area 1a and the third screw area 3c is shorter than the thread pitch of the second screw area 2d and the fourth screw area 3d.

[0149] It should be noted that the thread pitch of the first screw portion 1a and the third screw portion 3c may be equal to or longer than the thread pitch of the second screw portion 2d and the fourth screw portion 3d.

[0150] Fig. 11 shows a case where the thread pitch of the first screw portion 1a and the third screw portion 3c is shorter than the thread pitch of the second screw portion 2d and the fourth screw portion 3d.

[0151] The screw diameter of the first screw region 1a and the third screw region 3c is the same as the screw diameter of the second screw region 2d and the fourth screw region 3d.

[0152] It should be noted that, as described in the third embodiment, the screw diameter of the first screw portion 1a and the third screw portion 3c may be larger than the screw diameter of the second screw portion 2d and the fourth screw portion 3d.

[0153] Furthermore, as described in the fourth embodiment, the screw diameter of the second screw portion 2d and the fourth screw portion 3d may be larger than the screw diameter of the first screw portion 1a and the third screw portion 3c.

[0154] Attaching the terminal panel according to the fifth embodiment to an opening which is a through-hole of a wall which is a structure in an anechoic chamber is basically the same as attaching the terminal panel according to the first embodiment.

[0155] That is, the fastening is carried out as follows.

[0156] The fastening body 2 is attached to the opening formed in the wall.

[0157] The elastic body 5 is fixed to the first cylindrical part 2a of the fixing body 2 via an adhesive between a first end face of the first cylindrical part 2a and a second end face of the elastic body 5.

[0158] It should be noted that the elastic body 5 can be fixed to a second surface of the base plate 1 via an adhesive between a first end surface of the elastic body 5 and the second surface of the base plate 1.

[0159] In this state, the holding body 3 is temporarily fixed to the fixing body 2 in a similar manner to the fixing of the connecting plate according to the first embodiment.

[0160] The base plate 1 is temporarily attached to the holding body 3.

[0161] In this state, only the holding body 3 is rotated clockwise without rotating the base plate 1.

[0162] When only the holding body 3 is rotated clockwise without rotating the base plate 1, the holding body 3 and the base plate 1 move to a second end side of the fixing body 2 in a direction in which a second surface of the base plate 1 and a first end surface of the first cylindrical portion 2a in the fixing body 2 approach each other.

[0163] If only the holding body 3 is further rotated slightly clockwise in a state where the second surface of the base plate 1 is in close contact with a first end surface of the elastic body 5 and the first end surface of the first cylindrical portion 2a in the fixing body 2 is in close contact with the first end surface of the elastic body 5, as shown in Fig. 11, the second screw portion 2d of the first cylindrical section 2a in the fastening body 2 exerts a compressive force on the fourth screw portion 3d of the holding body 3 in a second direction, ie a direction of an arrow A2 in Fig. 11, and the first screw portion 1a of the base plate 1 exerts a compressive force on the third screw portion 3c of the holding body 3 in a first direction, ie a direction of an arrow B2 in Fig. 11, by a repulsion force of the elastic body 5.

[0164] Therefore, the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 are firmly in close contact with each other via the elastic body 5, and the shielding performance between the base plate 1 and the holding body 3, as well as the shielding performance between the fixing body 2 and the holding body 3, are high. This achieves high shielding performance between the base plate 1 and the fixing body 2.

[0165] The manner in which the base plate 1 is detached from the fixing body 2 when performing maintenance work such as the inspection, repair, or replacement of the second wiring harness cable or the inspection, repair, or replacement of the plurality of connectors 4 is basically the opposite of the above-described manner in which the base plate 1 is attached to the fixing body 2, and is basically the same as the manner in which the base plate 1 is detached from the fixing body 2 in the terminal panel according to the first embodiment. Therefore, a description will be omitted.

[0166] As described above, the terminal panel according to the fifth embodiment differs from the terminal panel according to the first embodiment in the buffer body, but has a similar effect to the terminal panel according to the first embodiment. Sixth embodiment.

[0167] A connection panel according to a sixth embodiment is described with reference to the Fig. 12 to 14 described.

[0168] The connection panel according to the sixth embodiment differs from the connection panel according to the first embodiment in that the screw connection of the first screw portion 1a in the base plate 1 and the third screw portion 3c in the holding body 3 is carried out in the same direction as the screw connection of the second screw portion 2d in the fastening body 2 and the fourth screw portion 3d in the holding body 3, that is, a screw structure of a left screw or a right screw is adopted in the connection panel according to the sixth embodiment, while the screw connection of the first screw portion 1a in the base plate 1 and the third screw portion 3c in the holding body 3 is in a direction opposite to the screw connection of the second screw portion 2d in the fastening body 2 and the fourth screw portion 3d in the holding body 3 in the connection panel according to the first embodiment.

[0169] It should be noted that in the Fig. 12 and Fig. 14 the same reference numbers as in the Fig. 1 and Fig. 7 designate the same or corresponding parts.

[0170] How the terminal panel according to the sixth embodiment is attached to an opening which is a through-hole of a wall which is a structure in an anechoic chamber will be explained with reference to FIG. Fig. 12 to 14 described.

[0171] First, the fastening body 2 is attached to the opening in the wall, which is a structure. The fastening method is the same as in the first embodiment of the connection panel.

[0172] Meanwhile, the base plate 1 is inserted into a hollow portion having the flat peripheral surface 3e in the holding body 3, and the base plate 1 is temporarily fixed to the holding body 3 in a state where a part of a second end of the first screw portion 1a of the base plate 1 and a part of a first end of the third screw portion 3c of the holding body 3 are screwed together.

[0173] In this intermediate fastening, a second surface of the base plate 1 and an open end of the holding body 3 are faced to each other at a first end side so that their center axes coincide, the first screw portion 1a of the base plate 1 is pressed against the third screw portion 3c of the holding body 3, and the holding body 3 is rotated counterclockwise without rotating the base plate 1.

[0174] By rotating the holding body 3 counterclockwise, the base plate 1 moves towards the peripheral surface 3e in the holding body 3 and is temporarily fixed.

[0175] In this state, as in Fig. 12, an open end of the holding body 3 at a second end side and an open end of the fastening body 2 at a first end side face each other so that their central axes coincide with each other.

[0176] Subsequently, the fourth screw area 3d of the holding body 3 is pressed against the second screw area 2d of the fastening body 2 and the holding body 3 is rotated clockwise without rotating the base plate 1.

[0177] Since the fourth screw portion 3d and the second screw portion 2d each have a right screw structure, the holding body 3 moves to a second end side of the fastening body 2, as shown in Fig. 13. In other words, a first end surface of the first cylindrical portion 2a in the fastening body 2 moves relatively toward a second surface of the base plate 1, ie, in the direction of the arrow X1 in Fig. 13.

[0178] Since the first screw portion 1a and the third screw portion 3c each have a right screw structure, the base plate 1 moves in a direction away from a first end of the fastening body 2, that is, in an arrow X2 direction, which is the same direction as the X1 direction in Fig. 13 is.

[0179] The thread pitch of the first screw area 1a and the third screw area 3c is shorter than the thread pitch of the second screw area 2d and the fourth screw area 3d.

[0180] Therefore, a movement path of the base plate 1 per rotation in the X2 direction with respect to the holding body 3 is shorter than a movement path of the fastening body 2 per rotation in the X1 direction with respect to the holding body 3.

[0181] As a result, the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a in the fastening body 2 gradually approach each other, and as shown in Fig. 14, the second surface of the base plate 1 can be brought into close contact with the first end surface of the first cylindrical portion 2a.

[0182] Since the base plate 1 is not rotated when the base plate 1 is fixed, the second cable connected to each of the plurality of connectors 4 is not twisted.

[0183] If only the holding body 3 is further rotated slightly clockwise in a state of close contact as shown in Fig. 14, the second screw portion 2d of the first cylindrical section 2a in the fastening body 2 exerts a compressive force on the fourth screw portion 3d of the holding body 3 in a second direction, ie an A2 direction in Fig. 14, and the first screw portion 1a of the base plate 1 exerts a compressive force on the third screw portion 3c of the holding body 3 in a first direction, ie a B2 direction in Fig. 14, by a repulsive force of the part of the first cylindrical portion 2a in the fastening body 2 with the flat peripheral surface 2e.

[0184] By rotating the holding body 3, the base plate 1 is fastened to the fastening body 2 via the holding body 3 and the fastening work is facilitated.

[0185] Furthermore, the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 are firmly in close contact with each other, and the shielding performance between the base plate 1 and the fixing body 3, as well as the shielding performance between the fixing body 2 and the fixing body 3, are high. This achieves high shielding performance between the base plate 1 and the fixing body 2.

[0186] The manner in which the base plate 1 is detached from the fixing body 2 when performing maintenance work such as the inspection, repair, or replacement of the second wire harness or the inspection, repair, or replacement of the plurality of connectors 4 is basically the opposite of the above-described manner in which the base plate 1 is fixed to the fixing body 2.

[0187] First, the first harness cable connected to the first terminal of each of the plurality of connectors 4 is disconnected.

[0188] Then only the holding body 3 is turned counterclockwise, i.e. in the opposite direction to that used for installation, without turning the base plate 1.

[0189] Then, the base plate 1 moves in a direction opposite to that at the time of attachment, and at the same time, the holding body 3 also moves in a direction opposite to that at the time of attachment.

[0190] That is, the holding body 3 moves in a direction to come out of the fixing body 2, and the base plate 1 moves in a direction of the hollow portion having the flat peripheral surface 3e in the holding body 3.

[0191] The fourth screw portion 3d of the holding body 3 is unscrewed from the second screw portion 2d of the fastening body 2, and the holding body 3 can be detached from the fastening body 2.

[0192] Therefore, the second harness cable can be detached from the second terminal of the connector 4, and maintenance work can be performed on the second harness cable and the plurality of connectors 4.

[0193] The base plate 1 may remain in a state of being temporarily fixed to the hollow portion with the flat peripheral surface 3e in the holding body 3, or by only rotating the holding body 3 clockwise without rotating the base plate 1 and moving the base plate 1 toward a first end of the holding body 3, the screw connection between the first screw portion 1a and the third screw portion 3c can be loosened, and the base plate 1 can be detached from the holding body 3.

[0194] After completion of the maintenance work, it is only necessary to attach the base plate 1 via the holding body 3 in the same way as when attaching it to the fastening body 2.

[0195] The connection panel according to the sixth embodiment has a similar effect to the connection panel according to the first embodiment.

[0196] Note that in the sixth embodiment described above, the first screw portion 1a, the third screw portion 3c, the second screw portion 2d, and the fourth screw portion 3d each have a right-hand screw structure. Alternatively, the first screw portion 1a, the third screw portion 3c, the second screw portion 2d, and the fourth screw portion 3d may each have a left-hand screw structure. In short, the screw connection of the first screw portion 1a and the third screw portion 3c, and the screw connection of the second screw portion 2d and the fourth screw portion 3d only need to have the same screw structure, either a left-hand screw or a right-hand screw.

[0197] Furthermore, in the sixth embodiment described above, the thread pitch of the first screw portion 1a and the third screw portion 3c is shorter than the thread pitch of the second screw portion 2d and the fourth screw portion 3d. Alternatively, the thread pitch of the second screw portion 2d and the fourth screw portion 3d may be shorter than the thread pitch of the first screw portion 1a and the third screw portion 3c.

[0198] In this case, the holding body 3 is moved by pressing the fourth screw portion 3d of the holding body 3 against the second screw portion 2d of the fixing body 2 and rotating the holding body 3 clockwise until an end surface of the third screw portion 3c of the holding body 3 on a second side is located on a first end surface of the first cylindrical portion 2a of the fixing body 2 and is temporarily fixed to the fixing body 2.

[0199] In this state, a second surface of the base plate 1 and an open end of the holding body 3 at a first end side are faced to each other so that their center axes coincide, the first screw portion 1a of the base plate 1 is pressed against the third screw portion 3c of the holding body 3, and the holding body 3 is rotated counterclockwise without rotating the base plate 1.

[0200] Since a moving distance of the base plate 1 per revolution with respect to the holding body 3 is longer than a moving distance of the fixing body 2 per revolution with respect to the holding body 3, the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 gradually approach each other, and the second surface of the base plate 1 can be brought into close contact with the first end surface of the first cylindrical portion 2a. Seventh embodiment.

[0201] A connection panel according to a seventh embodiment is described with reference to Fig. 15 described.

[0202] In the terminal panel according to the sixth embodiment, the first cylindrical portion 2a in the fixing body 2 has a first end surface in close contact with a second surface of the base plate 1 at its first end, a part with the smooth circumferential surface 2e is formed on the outer circumferential surface between the first end surface and the second screw portion 2d, and the part with the smooth circumferential surface 2e has a function as a buffer body, whereas in the terminal panel according to the seventh embodiment, a third cylindrical portion protruding from a second surface of the base plate 1 to the second surface side and having an end surface in close contact with a first end surface of the first cylindrical portion 2a in the fixing body 2 has the function as a buffer body.

[0203] In other points, the terminal panel according to the seventh embodiment has the same or similar configuration as the terminal panel according to the sixth embodiment.

[0204] It should be noted that in Fig. 15 the same reference numerals as in Fig. 12 to 14 refer to the same or corresponding parts.

[0205] As in Fig. 15, the base plate 1 has a third cylindrical portion 1b whose central axis coincides with the central axis of the first cylindrical portion 2a in the fastening body 2 and whose thickness is the same as the thickness of the first cylindrical portion 2a.

[0206] The third cylindrical portion 1b protrudes from a second surface of the base plate 1 to the second surface side and has an end surface in close contact with a first end surface of the first cylindrical portion 2a in the fastening body 2.

[0207] The second screw region 2d in the first cylindrical portion 2a extends to the first end surface of the first cylindrical portion 2a.

[0208] The third cylindrical portion 1b in the base plate 1 serves as a buffer body when the end surface of the third cylindrical portion 1b and the first end surface of the first cylindrical portion 2a are in close contact with each other.

[0209] That is, the third cylindrical portion 1b serves as a buffer body that exerts a compressive force on the first cylindrical portion 2a in a second direction along the central axis, ie, a direction of an arrow A1 in Fig. 15, and exerts a compressive force on the base plate 1 in a first direction along the central axis, ie a direction of an arrow B1 in Fig. 15.

[0210] As a result, the second screw portion 2d of the fastening body 2 exerts a compressive force on the fourth screw portion 3d of the holding body 3 in a second direction, ie in a direction of the arrow A2 in Fig. 15, and the first screw portion 1a of the base plate 1 exerts a compressive force on the third screw portion 3c of the holding body 3 in a first direction, ie in a direction of the arrow B2 in Fig. 15, by a repulsive force of the third cylindrical section 1b in the base plate 1.

[0211] Therefore, the end surface of the third cylindrical portion 1b in the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 are firmly in close contact with each other, and the shielding performance between the base plate 1 and the fixing body 3, as well as the shielding performance between the fixing body 2 and the fixing body 3, are high. This achieves high shielding performance between the base plate 1 and the fixing body 2.

[0212] Attaching the terminal panel according to the seventh embodiment to an opening which is a through-hole of a wall which is a structure in an anechoic chamber is basically the same as attaching the terminal panel according to the sixth embodiment.

[0213] That is, the fastening is carried out as follows.

[0214] The fastening body 2 is attached to the opening formed in the wall.

[0215] The base plate 1 is inserted into a hollow area with the flat peripheral surface 3e in the holding body 3 and temporarily fastened.

[0216] In this state, an open end of the holding body 3 at a second end side and an open end of the fixing body 2 at a first end side are faced to each other so that their center axes coincide with each other, and only the holding body 3 is rotated clockwise without rotating the base plate 1.

[0217] When only the holding body 3 is rotated clockwise without rotating the base plate 1, the holding body 3 moves to a second end side of the fixing body 2, and the base plate 1 moves in a direction away from a first end of the fixing body 2. However, a second surface of the base plate 1 and a first end surface of the first cylindrical portion 2a in the fixing body 2 gradually approach each other, and the second surface of the base plate 1 is brought into close contact with the first end surface of the first cylindrical portion 2a.

[0218] If only the holding body 3 is further rotated slightly clockwise in a close contact state as shown in Fig. 15, the second screw portion 2d of the first cylindrical portion 2a in the fastening body 2 exerts a compressive force on the fourth screw portion 3d of the holding body 3 in a second direction, ie in a direction of an arrow A2 in Fig. 15, and the first screw portion 1a of the base plate 1 exerts a compressive force on the third screw portion 3c of the holding body 3 in a first direction, ie in the direction of the arrow B2 in Fig. 15.

[0219] Therefore, the end surface of the third cylindrical portion 1b in the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 are firmly in close contact with each other, and the shielding performance between the base plate 1 and the fixing body 3, as well as the shielding performance between the fixing body 2 and the fixing body 3, are high. This achieves high shielding performance between the base plate 1 and the fixing body 2.

[0220] The manner in which the base plate 1 is detached from the attachment body 2 when performing maintenance work such as the inspection, repair, or replacement of the second wiring harness or the inspection, repair, or replacement of the plurality of connectors 4 is basically the opposite of the above-described manner in which the base plate 1 is attached to the attachment body 2, and is basically the same as the manner in which the base plate 1 is detached from the attachment body 2 in the terminal panel according to the sixth embodiment. Therefore, a description will be omitted.

[0221] As described above, the terminal panel according to the seventh embodiment differs from the terminal panel according to the sixth embodiment in the buffer body, but has a similar effect to the terminal panel according to the sixth embodiment. Eighth embodiment.

[0222] A connection panel according to an eighth embodiment is described with reference to Fig. 16 described.

[0223] The terminal panel according to the eighth embodiment differs from the terminal panel according to the sixth embodiment in that the screw diameter of the first screw portion 1a of the base plate 1 and the third screw portion 3c of the holding body 3 is larger than the screw diameter of the second screw portion 2d of the fastening body 2 and the fourth screw portion 3d of the holding body 3 in the terminal panel according to the eighth embodiment, whereas the screw diameter of the first screw portion 1a of the base plate 1 and the third screw portion 3c of the holding body 3 is the same as the screw diameter of the second screw portion 2d of the fastening body 2 and the third screw portion 3c of the holding body 3 in the terminal panel according to the sixth embodiment, and has the same or similar configuration in the other points.

[0224] It should be noted that in Fig. 16 the same reference numerals as in Fig. 12 to 14 refer to the same or corresponding parts.

[0225] As in Fig. 16, the diameter of an outer circumferential circle enclosing the first screw portion 1a in the base plate 1 is larger than the diameter of an outer circumferential circle enclosing the second screw portion 2d of the first cylindrical portion 2a in the fastening body 2.

[0226] The second screw region 2d in the first cylindrical portion 2a of the fastening body 2 extends to a first end surface of the first cylindrical portion 2a.

[0227] The first end surface of the first cylindrical part 2a of the fastening body 2 is in close contact with a second surface of the base plate 1.

[0228] In a state where the first end surface of the first cylindrical portion 2a of the fixing body 2 and the second surface of the base plate 1 are in close contact with each other, a first end in the first cylindrical portion 2a of the fixing body 2, which is not screwed into the fourth screw portion 3d of the holding body 3, serves as a buffer body.

[0229] That is, the first end in the first cylindrical portion 2a of the fastening body 2 serves as a buffer body which exerts a compressive force on the first cylindrical portion 2a in a second direction along the central axis, ie, a direction of an arrow A1 in Fig. 16, and exerts a compressive force on the base plate 1 in a first direction along the central axis, ie a direction of an arrow B1 in Fig. 16.

[0230] As a result, the second screw portion 2d of the first cylindrical portion 2a exerts a compressive force on the fourth screw portion 3d of the holding body 3 in a second direction, ie in a direction of the arrow A2 in Fig. 16, and the first screw portion 1a of the base plate 1 exerts a compressive force on the third screw portion 3c of the holding body 3 in a first direction, ie in a direction of the arrow B2 in Fig. 16, by a repulsive force of the first end in the first cylindrical portion 2a of the fastening body 2.

[0231] Therefore, the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 are firmly in close contact with each other, and the shielding performance between the base plate 1 and the holding body 3, as well as the shielding performance between the fixing body 2 and the holding body 3, are high. This achieves high shielding performance between the base plate 1 and the fixing body 2.

[0232] Also, in the terminal panel according to the eighth embodiment, the attachment of the terminal panel and the detachment of the base plate 1 from the fixing body 2 are substantially the same as the attachment of the terminal panel and the detachment of the base plate 1 from the fixing body 2 in the sixth embodiment, so that a description is omitted.

[0233] The connection panel according to the eighth embodiment has a similar effect to the connection panel according to the sixth embodiment. Ninth embodiment.

[0234] A connection panel according to a ninth embodiment is described with reference to Fig. 17 described.

[0235] The terminal panel according to the ninth embodiment differs from the terminal panel according to the sixth embodiment in that the screw diameter of the second screw portion 2d of the fastening body 2 and the fourth screw portion 3d of the holding body 3 is larger than the screw diameter of the first screw portion 1a of the base plate 1 and the third screw portion 3c of the holding body 3 in the terminal panel according to the ninth embodiment, while the screw diameter of the first screw portion 1a of the base plate 1 and the third screw portion 3c of the holding body 3 is the same as the screw diameter of the second screw portion 2d of the fastening body 2 and the fourth screw portion 3d of the holding body 3 in the terminal panel according to the sixth embodiment, and has the same or similar configuration in the other points.

[0236] It should be noted that in Fig. 17 the same reference numerals as in Fig. 12 to 14 refer to the same or corresponding parts.

[0237] As in Fig. 17, the diameter of an outer circumferential circle enclosing the second screw portion 2d of the first cylindrical portion 2a in the fastening body 2 is larger than the diameter of an outer circumferential circle enclosing the first screw portion 1a in the base plate 1.

[0238] In the first cylindrical portion 2a of the fixing body 2, an extension portion 2f is formed which extends inward at a right angle from the part of the first cylindrical portion 2a having the flat peripheral surface 2e, and a lower portion of a first end surface of the extension portion 2f is in close contact with a second surface of the base plate 1.

[0239] The part of the first cylindrical portion 2a having the flat peripheral surface 2e and the extended portion 2f serve as a buffer body when the first end surface of the extended portion 2f and the second surface of the base plate 1 are firmly in close contact with each other.

[0240] That is, the part of the first cylindrical portion 2a having the flat peripheral surface 2e and the extending portion 2f serve as a buffer body that applies a compressive force to the first cylindrical portion 2a in a second direction along the central axis, ie, a direction of an arrow A1 in Fig. 17, and exerts a compressive force on the base plate 1 in a first direction along the central axis, ie a direction of an arrow B1 in Fig. 17, exercises.

[0241] As a result, the second screw portion 2d of the first cylindrical section 2a exerts a compressive force on the fourth screw portion 3d of the holding body 3 in a second direction, ie in the direction of the arrow A2 in Fig. 17, and the first screw portion 1a of the base plate 1 exerts a compressive force on the third screw portion 3c of the holding body 3 in a first direction, ie in the direction of the arrow B2 in Fig. 17, namely by a repulsive force of the part of the first cylindrical portion 2a with the flat peripheral surface 2e.

[0242] Therefore, a second end surface of the base plate 1 and a first end surface of the extending portion 2f of the first cylindrical portion 2a in the fixing body 2 are firmly in close contact with each other, and the shielding performance between the base plate 1 and the holding body 3, as well as the shielding performance between the fixing body 2 and the holding body 3, are high. This achieves high shielding performance between the base plate 1 and the fixing body 2.

[0243] In addition, since the screw diameter of the fourth screw portion 3d of the holding body 3 is larger than the screw diameter of the third screw portion 3c, the base plate 1 can be temporarily fixed to the holding body 3 from the third screw portion 3c side, so that the base plate 1 can be easily temporarily fixed to the holding body 3.

[0244] In the terminal panel according to the ninth embodiment, the manner in which the terminal panel is mounted after the base plate 1 is temporarily fixed to the support body 3 is substantially the same as the manner in which the terminal panel according to the sixth embodiment is mounted, and therefore, the description of how the terminal panel is mounted after the base plate 1 is temporarily fixed to the support body 3 is omitted.

[0245] Moreover, in the terminal panel according to the ninth embodiment, the manner in which the base plate 1 is detached from the fixing body 2 is substantially the same as the manner in which the base plate 1 is detached from the fixing body 2 in the terminal panel according to the sixth embodiment, and therefore, the description of how the base plate 1 is detached from the fixing body 2 is omitted.

[0246] The connection panel according to the ninth embodiment has a similar effect to the connection panel according to the sixth embodiment and facilitates the temporary attachment of the base plate 1 to the holding body 3. Tenth embodiment.

[0247] A connection panel according to a tenth embodiment is described with reference to Fig. 18 described.

[0248] In the terminal panel according to the sixth embodiment, the first cylindrical portion 2a in the fixing body 2 has a first end surface in close contact with a second surface of the base plate 1 at its first end, a part with the smooth circumferential surface 2e is formed on an outer circumferential surface thereof between the first end surface and the second screw portion 2d, and the part with the straight or smooth circumferential surface 2e has a function as a buffer body, whereas in the terminal panel according to the tenth embodiment, a cylindrical elastic body arranged between the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a in close contact with both the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a has the function as a buffer body.

[0249] In other points, the terminal panel according to the tenth embodiment is the same as the terminal panel according to the sixth embodiment.

[0250] It should be noted that in Fig. 18 the same reference numerals as in Fig. 12 to 14 refer to the same or corresponding parts.

[0251] As in Fig. 18, an elastic body 5 has a first end surface firmly in close contact with a second surface of the base plate 1 and a second end surface firmly in close contact with a first end surface of the first cylindrical portion 2a of the fixing body 2.

[0252] The elastic body 5 is an elastic structure with flexibility and repulsive force, and is preferably a conductive elastic body. The conductive elastic body may be a well-known one, for example, a conductive elastic body made by mixing a conductor such as carbon black or metal powder into silicone rubber.

[0253] By using the conductive elastic body as the elastic body 5, the shielding performance is improved because the base plate 1 is electrically connected and grounded via the elastic body 5.

[0254] The second screw region 2d in the first cylindrical portion 2a extends to the first end surface of the first cylindrical portion 2a.

[0255] The holding body 3 has a flat circumferential surface 3e on the inner circumferential surface between the third screw area 3c and the fourth screw area 3d.

[0256] The width of the flat peripheral surface 3e is larger than the width of the elastic body 5, and similar to the terminal panel according to the sixth embodiment, the flat peripheral surface 3e has a width required for temporarily fixing the base plate 1 to the holding body 3.

[0257] The elastic body 5 is located at the center of the circumferential surface 3e in an axial direction in a state where a second surface of the base plate 1 and a first end surface of the first cylindrical portion 2a are in close contact with each other via the elastic body 5.

[0258] The screwing of the third screw portion 3c of the holding body 3 and the first screw portion 1a of the base plate 1 is carried out in the same direction as the screwing of the fourth screw portion 3d of the holding body 3 and the second screw portion 2d of the first cylindrical portion 2a of the fastening body 2, and the third screw portion 3c and the fourth screw portion 3d each have a right-hand screw structure.

[0259] It should be noted that the third screw portion 3c and the fourth screw portion 3d may each have a left screw structure, and in this case, the rotation direction is opposite to that of the right screw structure.

[0260] The thread pitch of the first screw area 1a and the third screw area 3c is shorter than the thread pitch of the second screw area 2d and the fourth screw area 3d.

[0261] The screw diameter of the first screw region 1a and the third screw region 3c is the same as the screw diameter of the second screw region 2d and the fourth screw region 3d.

[0262] It should be noted that, as described in the eighth embodiment, the screw diameter of the first screw portion 1a and the third screw portion 3c may be larger than the screw diameter of the second screw portion 2d and the fourth screw portion 3d.

[0263] Furthermore, as described in the ninth embodiment, the screw diameter of the second screw portion 2d and the fourth screw portion 3d may be larger than the screw diameter of the first screw portion 1a and the third screw portion 3c.

[0264] Attaching the terminal panel according to the tenth embodiment to an opening which is a through-hole of a wall which is a structure in an anechoic chamber is basically the same as attaching the terminal panel according to the sixth embodiment.

[0265] That is, the fastening is carried out as follows.

[0266] The fastening body 2 is attached to the opening formed in the wall.

[0267] The elastic body 5 is fixed to the first cylindrical part 2a of the fixing body 2 via an adhesive between a first end face of the first cylindrical part 2a and a second end face of the elastic body 5.

[0268] It should be noted that the elastic body 5 can be fixed to a second surface of the base plate 1 via an adhesive between a first end surface of the elastic body 5 and the second surface of the base plate 1.

[0269] The base plate 1 is inserted into a hollow area with the flat peripheral surface 3e in the holding body 3 and temporarily fastened.

[0270] In this state, only the holding body 3 is rotated clockwise without rotating the base plate 1.

[0271] In this state, an open end of the holding body 3 at a second end side and an open end of the fixing body 2 at a first end side are faced to each other so that their center axes coincide with each other, and only the holding body 3 is rotated clockwise without rotating the base plate 1.

[0272] When only the holding body 3 is rotated clockwise without rotating the base plate 1, the holding body 3 moves to a second end side of the fixing body 2, and the base plate 1 moves in a direction away from a first end of the fixing body 2. However, a second surface of the base plate 1 and a first end surface of the first cylindrical portion 2a in the fixing body 2 gradually approach each other, and the second surface of the base plate 1 is brought into close contact with the first end surface of the first cylindrical portion 2a.

[0273] If only the holding body 3 is further rotated slightly clockwise in a close contact state as shown in Fig. 18, the second screw portion 2d of the first cylindrical portion 2a in the fastening body 2 exerts a compressive force on the fourth screw portion 3d of the holding body 3 in a second direction, ie in a direction of an arrow A2 in Fig. 18, and the first screw portion 1a of the base plate 1 exerts a compressive force on the third screw portion 3c of the holding body 3 in a first direction, ie in the direction of the arrow B2 in Fig. 18, by a repulsion force of the elastic body 5.

[0274] Therefore, the second surface of the base plate 1 and the first end surface of the first cylindrical portion 2a in the fixing body 2 are firmly in close contact with each other via the elastic body 5, and the shielding performance between the base plate 1 and the holding body 3, as well as the shielding performance between the fixing body 2 and the holding body 3, are high. This achieves high shielding performance between the base plate 1 and the fixing body 2.

[0275] The manner in which the base plate 1 is detached from the attachment body 2 when performing maintenance work such as the inspection, repair, or replacement of the second wiring harness or the inspection, repair, or replacement of the plurality of connectors 4 is basically the opposite of the above-described manner in which the base plate 1 is attached to the attachment body 2, and is basically the same as the manner in which the base plate 1 is detached from the attachment body 2 in the terminal panel according to the sixth embodiment. Therefore, a description will be omitted.

[0276] As described above, the terminal panel according to the tenth embodiment differs from the terminal panel according to the sixth embodiment in the buffer body, but has a similar effect to the terminal panel according to the sixth embodiment.

[0277] It should be noted that the embodiments can be freely combined with each other, that each individual element in each embodiment can be changed, or that each individual element in each embodiment can be omitted. INDUSTRIAL APPLICABILITY

[0278] The terminal panel according to the present disclosure is suitable for a structure that shields an interior from an exterior, particularly a terminal panel that is attached to an opening formed in a wall that shields an interior of a shielded enclosed space, such as an anechoic chamber, from an exterior thereof, and that electrically connects the interior of the enclosed space to the exterior thereof with a plurality of signal cables or the like. LIST OF REFERENCE SYMBOLS

[0279] 1: Base plate, 1a: first screw section, 1b: third cylindrical section, 2: Fastening body, 2a: first cylindrical section, 2b: flange, 2c: screw through hole, 2d: second screw section, 2e: flat peripheral surface, 2f: extension section, 3: Holding body, 3a: second cylindrical section, 3b: second flange, 3c: third screw section, 3d: fourth screw section, 3e: flat peripheral surface, 4: Connector, 5: Elastic body QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] JP 07-130427 A

[0003]

Claims

[1] Connection panel, comprising: a base plate having a disc shape to which a plurality of connectors are attached, the plurality of connectors each having a first end protruding to one side of a first surface of the base plate and a second end protruding to one side of a second surface of the base plate, the base plate having a first screw portion on its outer peripheral surface; a fastening body having a first cylindrical portion and a flange formed integrally with the first cylindrical portion at a second end of the first cylindrical portion, the flange being adapted to be fastened to an edge of an opening formed in a structure that shields an inside from an outside, and having a second screw portion at a first end of an outer peripheral surface of the first cylindrical portion; and a holding body having a third screw portion into which the first screw portion of the base plate is screwed at a first end of an inner peripheral surface of the holding body, and a fourth screw portion into which the second screw portion of the fastening body is screwed at a second end of the inner peripheral surface, and having a second cylindrical portion whose central axis coincides with a central axis of the first cylindrical portion of the fastening body. [2] The terminal panel according to claim 1, wherein the base plate, the fixing body and the holding body are each a conductive member. [3] Connection panel according to claim 2, wherein the first screw area in the base plate is a parallel screw with an external thread, the second screw area in the fastening body is a parallel external thread screw, the third screw area in the holding body is a parallel internal thread screw, and the fourth screw area in the holding body is a parallel internal thread screw, and the screwing of the first screw area and the third screw area takes place in a direction that is opposite to the screwing of the second screw area and the fourth screw area. [4] The terminal panel according to claim 3, wherein a thread pitch of the first screw portion and the third screw portion is shorter than a thread pitch of the second screw portion and the fourth screw portion. [5] The terminal panel according to claim 3, wherein a screw diameter of the first screw portion and the third screw portion is larger than a screw diameter of the second screw portion and the fourth screw portion. [6] The terminal panel according to claim 4, wherein a screw diameter of the first screw portion and the third screw portion is larger than a screw diameter of the second screw portion and the fourth screw portion. [7] The terminal panel according to claim 3, wherein a screw diameter of the second screw portion and the fourth screw portion is larger than a screw diameter of the first screw portion and the third screw portion. [8] The terminal panel according to claim 4, wherein a screw diameter of the second screw portion and the fourth screw portion is larger than a screw diameter of the first screw portion and the third screw portion. [9] The terminal panel according to claim 3, further comprising a cylindrical elastic body, the first end surface of which is to be in close contact with the second surface of the base plate and the second end surface of which is to be in close contact with a first end surface of the first cylindrical portion of the fixing body. [10] Connection panel according to one of claims 1 to 9, wherein the holding body has a flat peripheral surface which serves as a boundary between the third screw region and the fourth screw region on an inner peripheral surface of the holding body. [11] The terminal panel according to claim 10, wherein the first cylindrical portion of the fixing body has an end surface in close contact with the second surface of the base plate at a first end of the first cylindrical portion, and a flat peripheral surface on an outer peripheral surface of the first cylindrical portion between the end surface in close contact and the second screw portion. [12] The terminal panel according to claim 10, wherein the base plate has a third cylindrical portion projecting from the second surface of the base plate in a direction from the first surface to the second surface of the base plate and having an end surface in close contact with a first end surface of the first cylindrical portion of the fixing body. [13] Connection panel according to claim 2, wherein the first screw area in the base plate is a parallel screw with an external thread, the second screw area in the fastening body is a parallel external thread screw, the third screw area in the holding body is a parallel internal thread screw, and the fourth screw area in the holding body is a parallel internal thread screw, the screwing of the first screw area and the third screw area takes place in the same direction as the screwing of the second screw area and the fourth screw area, and a thread pitch of the first screw area and the third screw area is different from a thread pitch of the second screw area and the fourth screw area. [14] The terminal panel according to claim 13, wherein a screw diameter of the first screw portion and the third screw portion is larger than a screw diameter of the second screw portion and the fourth screw portion. [15] The terminal panel according to claim 13, wherein a screw diameter of the first screw portion and the third screw portion is smaller than a screw diameter of the second screw portion and the fourth screw portion. [16] The terminal panel according to claim 13, further comprising a cylindrical elastic body, the first end surface of which is to be in close contact with a second surface of the base plate and the second end surface of which is to be in close contact with a first end surface of the first cylindrical portion of the fixing body. [17] Connection panel according to one of claims 13 to 16, wherein the holding body has a flat peripheral surface which serves as a boundary between the third screw region and the fourth screw region on an inner peripheral surface of the holding body. [18] The terminal panel according to claim 17, wherein the first cylindrical portion of the fastening body has an end surface in close contact with a second surface of the base plate at a first end of the first cylindrical portion, and a flat peripheral surface on an outer peripheral surface of the first cylindrical portion between the end surface and the second screw portion. [19] The terminal panel according to claim 17, wherein the base plate has a third cylindrical portion projecting to the second surface side and having an end surface in close contact with a first end surface of the first cylindrical portion of the fixing body.

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