Seal cover

Abstract

To provide a technology which enables improvement of attachment workability of a seal member to a shield cover.SOLUTION: A first screw is inserted through a first through hole of a shield cover to be attached to a first seal member. A second screw is inserted into a second through hole of the shield cover to be attached to a second seal member. A first clearance exists at the inner side of the first through hole and a second clearance exists at the inner side of the second through hole. When a plane intersecting with a fitting direction of an interlock connector is set as one plane, the first seal member may move relative to the shield cover along the one plane according to the first clearance. The second seal member may move relative to the shield cover along the one plane according to the second clearance. The first screw is attached to a position offset from a center of the first seal member to one side in an arrangement direction.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a seal cover.

Background Art

[0002] Patent Document 1 describes a seal cover that covers an opening of an attachment target such as a case. The seal cover of Patent Document 1 includes a seal member (described as a fitting portion in Patent Document 1) having a portion that fits into the opening of the attachment target, and a shield case to which the seal member is attached and fixed to the attachment target.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the seal cover of Patent Document 1, the seal member is attached to the shield case at its center. Therefore, an operator performing the attachment work of attaching the seal member to the shield cover needs to be careful not to perform the attachment work with the seal member rotated 180 degrees from its original attachment posture.

[0005] Therefore, an object is to provide a technique capable of improving the workability of attaching the seal member to the shield cover.

Means for Solving the Problems

[0006] The seal cover of the present disclosure is attached to an object to be attached having a first opening and a second opening arranged side by side with the first opening and smaller than the first opening, and is a seal cover that covers the first opening and the second opening, and has a first seal member having a first seal portion that fits into the first opening and seals the first opening, a second seal member having a second seal portion that fits into the second opening and seals the second opening, and arranged side by side with the first seal member, a shield cover to which the first seal member and the second seal member are attached and fixed to the object to be attached and having a first through hole and a second through hole, an interlock connector attached to the first seal member to ensure attachment of the seal cover to the object to be attached, a first screw inserted through the first through hole of the shield cover and attached to the first seal member, and a second screw inserted through the second through hole of the shield cover and attached to the second seal member. There is a first clearance inside the first through hole and a second clearance inside the second through hole. The object to be attached has a mating connector that mates with the interlock connector. When a plane intersecting the fitting direction of the interlock connector with respect to the mating connector is taken as a plane, the first seal member is relatively movable with respect to the shield cover along the plane according to the first clearance, and the second seal member is relatively movable independently of the first seal member with respect to the shield cover along the plane according to the second clearance. The interlock connector is attached at a position closer to the center of the first seal member than the first screw in the arrangement direction of the first seal member and the second seal member. The first screw is attached at a position shifted from the center of the first seal member to one side in the arrangement direction. The second screw is attached to the center of the second seal member.

Advantages of the Invention

[0007] According to the present disclosure, the workability of attaching the first seal member to the shield cover is improved.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of Embodiments of the Present Disclosure] First, embodiments of the present disclosure will be listed and described.

[0010] The seal cover of the present disclosure is as follows.

[0011] (1) A seal cover that is attached to an object to be attached, has a first opening and a second opening that is aligned with and smaller than the first opening, and covers the first opening and the second opening, the seal cover including: a first seal member that fits into the first opening and seals the first opening, having a first seal portion; a second seal member that fits into the second opening and seals the second opening, having a second seal portion and aligned with the first seal member; a shield cover that has a first through hole and a second through hole, to which the first seal member and the second seal member are attached and fixed to the object to be attached; an interlock connector that is attached to the first seal member and guarantees attachment of the seal cover to the object to be attached; a first screw that is inserted through the first through hole of the shield cover and attached to the first seal member; and a second screw that is inserted through the second through hole of the shield cover and attached to the second seal member. A first clearance exists inside the first through hole, and a second clearance exists inside the second through hole. The object to be attached has a mating connector that mates with the interlock connector. When a plane intersecting the fitting direction of the interlock connector with respect to the mating connector is taken as a single plane, the first seal member is relatively movable with respect to the shield cover along the single plane according to the first clearance, the second seal member is relatively movable independently of the first seal member with respect to the shield cover along the single plane according to the second clearance, the interlock connector is attached at a position closer to the center of the first seal member than the first screw in the alignment direction of the first seal member and the second seal member, the first screw is attached at a position shifted from the center of the first seal member to one side in the alignment direction, and the second screw is attached at the center of the second seal member. According to the present disclosure, the first screw inserted through the first through hole of the shield cover is attached at a position shifted from the center of the first seal member to one side in the alignment direction of the first seal member and the second seal member. As a result, the attachment posture of the first seal member with respect to the shield cover becomes clear. Consequently, the attachment workability of the first seal member with respect to the shield cover is improved.

[0012] (2) The first seal member penetrates through the shield cover with a third clearance, and has a protrusion for restricting the rotation of the first seal member. The protrusion may be offset from the center of the first seal member toward the other side in the alignment direction. In this case, the first screw and the protrusion will be located on opposite sides of each other with the center of the first seal member in between. Thereby, it is possible to prevent the movement amount of the portion of the first seal member on the side opposite to the first screw from becoming too large. Thus, the first seal portion of the first seal member can be more easily fitted into the first opening.

[0013] (3) The protrusion may protrude outside the shield cover from an opening provided in the concave surface of the surface of the shield cover. In this case, the protruding distance of the protrusion from the shield cover can be increased. Thereby, even when the first seal member is tilted with respect to the shield cover with the first screw as a fulcrum, the protrusion is less likely to come out of the shield cover.

[0014] (4) The opening may surround the root side more than the center in the protruding direction of the protrusion. In this case, since the protrusion comes into contact with the shield cover at its root side, the protrusion is less likely to break.

[0015] (5) The planar view outer shape of the second seal member as viewed from a direction perpendicular to the one plane may be circular, and may be provided with an anti-rotation structure for the second seal member. In this case, when a second screw is attached to the second seal member, it becomes difficult for the second seal member to rotate together with the second screw.

[0016] (6) The object to be attached has a regulating pin that protrudes in a direction opposite to the fitting direction and regulates the attachment position of the seal cover in the direction along the one plane. The interlock connector is attached to the first seal member so as to be relatively movable along the one plane with respect to the first seal member. The shield cover has a third through-hole through which the regulating pin is inserted. The dimension of the first seal member in the direction along the fitting direction is set to a dimension such that the first seal portion does not fit into the first opening when the regulating pin is inserted into the third through-hole and the tip of the interlock connector starts to fit into the mating connector. In this case, with the positions of the interlock connector and the shield cover in the direction along the one plane being regulated, the first seal portion of the first seal member will start to fit into the first opening. When the interlock connector is relatively movable along the one plane with respect to the first seal member and the first seal member is relatively movable along the one plane with respect to the shield cover, the first seal member is relatively movable along the one plane with respect to each of the interlock connector and the shield cover. Therefore, even when the positions of the interlock connector and the shield cover in the direction along the one plane are regulated, the first seal portion of the first seal member is likely to fit into the first opening.

[0017] [Details of Embodiments of the Present Disclosure] A specific example of the seal cover of the present disclosure will be described below with reference to the drawings. It should be noted that the present invention is not limited to these examples, and is intended to be indicated by the claims and to include all modifications within the meaning and scope equivalent to the claims.

[0018] [Overview of Seal Cover] FIG. 1 is a schematic perspective view showing an example of the seal cover 1. FIG. 2 is a schematic perspective view showing an example of the seal cover 1 viewed from an angle different from that of FIG. 1. Specifically, FIG. 2 is a schematic perspective view showing an example of the seal cover 1 viewed from the opposite side of FIG. 1. FIG. 3 is a schematic side view showing an example of the seal cover 1. FIG. 4 is a schematic plan view showing an example of the attachment target 800 to which the seal cover 1 is attached. In FIG. 3, the cross-sectional structure of the attachment target 800 at the arrow view A-A shown in FIG. 4 is indicated by a two-dot chain line.

[0019] As shown in FIGS. 3 and 4, the attachment target 800 to which the seal cover 1 is attached includes, for example, a first opening 821 (also simply referred to as the opening 821) and a second opening 831 (also simply referred to as the opening 831). The second opening 831 is arranged beside the first opening 821 and is smaller than the first opening 821. Further, the attachment target 800 includes a mating connector 880 that fits with the interlock connector 5 provided in the seal cover 1.

[0020] The seal cover 1 covers the openings 821 and 822 of the attachment target 800. As shown in FIGS. 1 to 3, the seal cover 1 includes a first seal member 2 (also simply referred to as the seal member 2), a second seal member 3 (also simply referred to as the seal member 3), a shield cover 4, and an interlock connector 5 (also simply referred to as the connector 5). The first seal member 2 has a first seal portion 210 (also simply referred to as the seal portion 210) that fits into the first opening 821 and seals the first opening 821. The second seal member 3 has a second seal portion 310 (also simply referred to as the seal portion 310) that fits into the second opening 831 and seals the second opening 831. The shield cover 4 is fixed to the attachment target 800, for example, and performs electromagnetic shielding of the openings 821 and 831. The interlock connector 5 is attached to the first seal member 2, for example, and ensures the attachment of the seal cover 1 to the attachment target 800.

[0021] By sealing the openings 821 and 822 of the object 800 to be attached together with the seal cover 1, it becomes difficult for, for example, water and foreign matter to enter the object 800 from the openings 821 and 822. Further, it becomes difficult for unnecessary electromagnetic waves to enter the object 800 to be attached from the openings 821 and 822, and it becomes difficult for unnecessary electromagnetic waves to be radiated outward from the openings 821 and 822.

[0022] <Configuration example of the object to be attached> The object 800 to be attached includes, for example, a generally plate-shaped attachment portion 870 to which the seal cover 1 is attached, and a mating connector 880 (also simply referred to as the connector 880) that mates with the interlock connector 5 of the seal cover 1. The attachment portion 870 is made of, for example, a metal such as aluminum or iron. The attachment portion 870 constitutes, for example, a part of a housing that houses a plurality of components including the mating connector 880.

[0023] The attachment portion 870 includes, for example, a plate-shaped base portion 810, a first cylindrical portion 820 connected to the base portion 810, a second cylindrical portion 830, at least one regulating pin 850, and at least one boss 860.

[0024] The base portion 810 extends outward in a planar shape from the outer peripheral surfaces of the first cylindrical portion 820 and the second cylindrical portion 830. The outer shape of the base portion 810 forms, for example, a rectangle. The base portion 810 has a main surface 810a and a main surface 810b (see FIG. 3) that are parallel to each other.

[0025] The first cylindrical portion 820 and the second cylindrical portion 830 are erected on the main surface 810a of the base portion 810. The first cylindrical portion 820 (also simply referred to as the cylindrical portion 820) constitutes the first opening 821. The first opening 821 is formed by the hollow portion inside the first cylindrical portion 820. In other words, the first opening 821 is formed by the space surrounded by the first cylindrical portion 820. The second cylindrical portion 830 (also simply referred to as the cylindrical portion 830) constitutes the second opening 831. The second opening 831 is formed by the hollow portion inside the second cylindrical portion 830. The openings 821 and 831 are cylindrical holes and penetrate the base portion 810.

[0026] The outer shape of the opening 821 in plan view is, for example, oval. The outer shape of the opening 831 in plan view is, for example, circular (specifically, a perfect circle). The opening 831 is smaller than the opening 821. The opening area of the opening 831 is smaller than the opening area of the opening 821. The openings 821 and 831 are arranged, for example, along the longitudinal direction of the base portion 810. The longitudinal direction of the oval opening 831 is along the arrangement direction of the openings 821 and 831, in other words, along the longitudinal direction of the base portion 810.

[0027] When the opening 821 is viewed from the main surface 810a side, the connector 880 is exposed from the opening 821. The connector 880 is visible when the opening 821 is viewed from the main surface 810a side. The connector 5 of the seal cover 1 is fitted to the connector 880 from a direction perpendicular to the main surface 810a. The fitting direction D1 (see FIG. 3) of the connector 5 with respect to the connector 880 is a direction perpendicular to the main surfaces 810a and 810b. The fitting direction D1 is also a direction along the thickness direction of the base portion 810.

[0028] On the main surface 810a of the base portion 810, for example, at least one regulating pin 850 is erected. The regulating pin 850 extends along a direction perpendicular to the main surface 810a. The regulating pin 850 protrudes in a direction opposite to the fitting direction D1 of the connector 5. In this example, a plurality of regulating pins 850 are provided on the main surface 810a, but the number of regulating pins 850 may be one. For example, two regulating pins 850 are provided on the main surface 810a.

[0029] The regulating pin 850 regulates the mounting position of the seal cover 1 in the direction along the main surface 810a. When a plane intersecting the fitting direction D1 of the connector 5 with respect to the connector 880 is taken as a plane, the regulating pin 850 regulates the mounting position of the seal cover 1 in the direction along the plane. Hereinafter, the plane may be referred to as a specific plane.

[0030] The two restricting pins 850 provided on the attachment target 800 are provided, for example, at both longitudinal ends of the base portion 810, respectively. The two restricting pins 850 are arranged side by side, for example, along the longitudinal direction of the base portion 810. The restricting pins 850 are provided, for example, at the central portions of both ends in the longitudinal direction of the base portion 810.

[0031] On the main surface 810a of the base portion 810, at least one boss 860 is erected, for example. A fixing bolt for fixing the seal cover 1 to the attachment portion 870 is screwed into the boss 860. In this example, a plurality of bosses 860 are provided on the main surface 810a, but the number of bosses 860 may be one. For example, five bosses 860 are provided on the main surface 810a. Four of the five bosses 860 are provided, for example, at the four corner portions of the main surface 810a of the base portion 810, respectively. The remaining one boss 860 is located, for example, between the opening 821 and the opening 831. The boss 860 located between the opening 821 and the opening 831 and the two restricting pins 850 are arranged side by side, for example, along the longitudinal direction of the base portion 810.

[0032] <Configuration Example of Seal Cover> FIG. 5 is a schematic exploded perspective view showing an example of the seal cover 1. FIG. 6 is a schematic exploded perspective view showing an example of the seal cover 1 as viewed from an angle different from that of FIG. 5. Specifically, FIG. 6 is a schematic exploded perspective view showing an example of the seal cover 1 as viewed from the opposite side of FIG. 5. As shown in FIGS. 1 to 3, 5, and 6, in addition to the first seal member 2, the second seal member 3, the shield cover 4, and the interlock connector 5, the seal cover 1 includes a first screw 6 (also simply referred to as a screw 6) for attaching the first seal member 2 to the shield cover 4 and a second screw 7 (also simply referred to as a screw 7) for attaching the second seal member 3 to the shield cover 4. The first screw 6 passes through the shield cover 4 and is attached to the first seal member 2. The second screw 7 passes through the shield cover 4 and is attached to the second seal member 3.

[0033] <Configuration Example of Shield Cover> The shield cover 4 is formed, for example, by pressing a metal plate made of aluminum or iron. The shield cover 4 includes, for example, a plate-like base portion 430 fixed to the attachment portion 870 of the object to be attached 800, and a first arrangement recess 410 and a second arrangement recess 420 connected to the base portion 430. Each of the arrangement recesses 410 and 420 is, for example, a dish-shaped recess. The first seal member 2 is arranged in the first arrangement recess 410 (also simply referred to as the arrangement recess 410), and the second seal member 3 is arranged in the second arrangement recess 420 (also simply referred to as the arrangement recess 420).

[0034] The base portion 430 extends outward in a planar manner from the peripheral edges of the openings of the arrangement recesses 410 and 420. The outer shape of the base portion 430 is, for example, rectangular. The base portion 430 has a main surface 430a and a main surface 430b that are parallel to each other.

[0035] Each of the dish-shaped arrangement recesses 410 and 420 is recessed so as to protrude toward the main surface 430b side of the base portion 430. As a result, each of the arrangement recesses 410 and 420 opens on the main surface 430a side of the base portion 430. The outer shape of the opening of the arrangement recess 410 is, for example, oval in plan view. The outer shape of the opening of the arrangement recess 420 is, for example, circular (specifically, a perfect circle) in plan view. The opening of the arrangement recess 420 is smaller than the opening of the arrangement recess 410. That is, the opening area of the arrangement recess 420 is smaller than the opening area of the arrangement recess 410. The arrangement recesses 410 and 420 are arranged, for example, along the longitudinal direction of the base portion 430. The longitudinal direction of the oval opening of the arrangement recess 410 is along the arrangement direction of the arrangement recesses 410 and 420, in other words, along the longitudinal direction of the base portion 430.

[0036] The base portion 430 has a plurality of through holes 431 through which a plurality of regulating pins 850 of the object to be attached 800 are respectively inserted. Each through hole 431 penetrates the base portion 430 in its thickness direction. The base portion 430 has, for example, two through holes 431. The two through holes 431 are respectively provided at both longitudinal ends of the base portion 430, for example. The two through holes 431 are arranged side by side along the longitudinal direction of the base portion 430, for example. Each through hole 431 is provided at the center of the longitudinal end of the base portion 430.

[0037] The base portion 430 includes a plurality of through holes 432 penetrating in its thickness direction. A plurality of fixing bolts that are screwed into a plurality of bosses 860 of the object to be attached 800 are respectively inserted into the plurality of through holes 432. The base portion 430 includes, for example, five through holes 432. Four of the five through holes 432 are respectively provided at the four corner portions of the base portion 430, for example. The remaining one through hole 432 is located, for example, between the arrangement recess 410 and the arrangement recess 420. The through hole 432 located between the arrangement recesses 410 and 420 and the two through holes 431 are arranged side by side along the longitudinal direction of the base portion 430, for example. The shield cover 4 is fixed to the attachment portion 870 of the object to be attached 800 with, for example, five fixing bolts. The fixing bolts are inserted through the through holes 432 of the shield cover 4 and screwed into the bosses 860 of the object to be attached 800.

[0038] As shown in FIGS. 5 and 6, a through hole 411 through which a screw 6 is inserted is provided at the oval bottom of the arrangement recess 410. The screw 6 is inserted through the through hole 411 from the main surface 430b side of the base portion 430 and attached to the seal member 2 arranged in the arrangement recess 410.

[0039] The bottom of the arrangement recess 410 has a dish-shaped recess 413 that is recessed toward the main surface 430a side. The dish-shaped recess 413 opens to the main surface 430b side. The inner surface of the dish-shaped recess 413 constitutes a concave surface 4130. The concave surface 4130 is provided on the surface of the shield cover 4. A through hole 415 through which a later-described regulating projection 250 provided in the seal member 2 is inserted is provided at the bottom of the dish-shaped recess 413. The opening 4150 on the main surface 430b side of the through hole 415 is provided in the concave surface 4130 of the dish-shaped recess 413. Specifically, the opening 4150 is provided at the bottom of the concave surface 4130. The regulating projection 250 of the seal member 2 protrudes to the outside of the shield cover 4 from the opening 4150.

[0040] A through hole 421 through which a screw 7 is inserted is provided in the circular bottom of the arrangement recess 420. The screw 7 is inserted into the through hole 421 from the main surface 430b side of the base portion 430 and is attached to the seal member 3 disposed in the arrangement recess 420. In addition, a rotation prevention hole 422 through which a later-described rotation prevention projection 10 is inserted is provided in the side surface portion of the arrangement recess 420. The rotation prevention hole 422 is, for example, a through hole that penetrates the side surface portion of the arrangement recess 420 in its thickness direction. The rotation prevention projection 10 and the rotation prevention hole 422 constitute a rotation prevention structure for preventing the seal member 3 from rotating. The rotation prevention structure will be described in detail later.

[0041] <Configuration Example of the First Seal Member and the Interlock Connector> The first seal member 2 is made of, for example, resin. The outer shape of the first seal member 2 in a plan view as viewed from a direction perpendicular to a specific plane (that is, a plane intersecting the fitting direction D1) is, for example, an oval shape. The first seal member 2 includes, for example, a first seal portion 210, an annular flange portion 220 that protrudes outward from the periphery of the first seal portion 210, a connector holding portion 230 that holds the connector 5, and a boss 240 to which a screw 6 is attached. Further, the first seal member 2 includes, for example, a regulating projection 250, and abutting ribs 260 and 270 that abut against the bottom of the first arrangement recess 410 when the first seal member 2 is disposed in the first arrangement recess 410 of the shield cover 4.

[0042] The sealing portion 210 that fits into the opening 821 of the attachment target 800 includes, for example, a main body portion 211 and a sealing ring 212 attached to the main body portion 211. The main body portion 211 has, for example, a slightly flat columnar shape. The outer shape of the main body portion 211 in a plan view as seen from a direction perpendicular to a specific plane is, for example, an oval shape according to the outer shape of the opening 821 in a plan view. The sealing ring 212 is attached to the side surface (in other words, the outer peripheral surface) of the main body portion 211. Specifically, an annular groove is formed on the side surface of the main body portion 211, and the sealing ring 212 is fitted into the annular groove. In a state where the sealing portion 210 is fitted into the opening 821, the sealing ring 212 is in watertight contact with the inner peripheral wall of the opening 821 (in other words, the inner peripheral surface of the cylindrical portion 820), and the opening 821 is sealed by the sealing portion 210. The main body portion 211, the flange portion 220, the connector holding portion 230, the boss 240, the restricting projection portion 250, the contact rib 260, and the contact rib 270 are, for example, integrally formed.

[0043] The main body portion 211 has planes 211a and 211b that are parallel to each other. The sealing member 2 is disposed in the placement recess 410 such that the plane 211a of the main body portion 211 is positioned on the side of the placement recess 410 of the shield cover 4. The main body portion 211 has a cutout portion 280 that opens to the plane 211a and a cutout portion 281 that opens to the plane 211b.

[0044] The flange portion 220 extends outward from the end portion on the plane 211a side of the peripheral side surface of the main body portion 211 so as to surround the end portion. The flange portion 220 has an oval annular shape according to the outer shape of the main body portion 211 in a plan view.

[0045] The contact ribs 260 and 270 are erected on the plane 211a of the main body portion 211. The contact rib 260 is provided at one end portion in the longitudinal direction of the plane 211a of the main body portion 211. The contact rib 270 is provided at the other end portion in the longitudinal direction of the plane 211a of the main body portion 211. Each of the contact ribs 260 and 270 extends in an arc shape along the outer edge of the end portion in the longitudinal direction of the plane 211a. In a state where the sealing member 2 is disposed in the placement recess 410, the contact ribs 260 and 270 contact the inner bottom surface of the placement recess 410.

[0046] The boss 240 to which the screw 6 is attached is provided, for example, inside the main body portion 211. The boss 240 is located at one end in the longitudinal direction of the main body portion 211. The boss 240 has, for example, a hollow cylindrical shape. The boss 240 extends from the plane 211b side to the plane 211a side along the thickness direction of the main body portion 211. There is a relief portion 280 around the boss 240. A pilot hole 242 is provided in the boss 240. The pilot hole 242 opens to the tip surface 241 of the boss 240. The outer bottom surface 243 of the boss 240 is closed and protrudes outside the plane 211b of the main body portion 211. When the seal member 2 is disposed in the disposition recess 410 of the shield cover 4, the boss 240 is inserted through the through hole 411 of the disposition recess 410 from the main surface 430a side. In a state where the boss 240 is inserted through the through hole 411, the boss 240 protrudes from the shield cover 4, and the tip surface 241 of the boss 240 is located outside the shield cover 4. The tip surface 241 is located outside the outer surface of the disposition recess 410 (in other words, the surface on the main surface 430b side).

[0047] The screw 6 is, for example, a tapping screw (also referred to as a tapping bolt) having a washer head. The screw portion 6b of the screw 6 is inserted into the pilot hole 242 of the boss 240 inserted through the through hole 411 of the shield cover 4 from the main surface 430b side and screwed into the boss 240. At this time, the washer 6a of the screw 6 abuts against the tip surface 241 of the boss 240 protruding outside the shield cover 4 and does not contact the shield cover 4. And since the diameter of the washer 6a is larger than the diameter of the through hole 411, the screw 6 attached to the boss 240 is less likely to come out from the through hole 411 to the main surface 430a side. Thereby, the seal member 2 is attached to the shield cover 4. The screw 6 is attached at a position shifted from the center of the seal member 2 to one side in the longitudinal direction of the seal member 2. In other words, the screw 6 is attached at a position shifted from the center of the seal member 2 to one side in the arrangement direction of the seal members 2 and 3.

[0048] In this example, since the outer bottom surface 243 of the boss 240 protrudes outward from the plane 211b of the main body portion 211, the thickness of the bottom portion of the boss 240 can be increased. As a result, even if the screw 6 is screwed into the boss 240 too much, the tip of the screw 6 is less likely to protrude from the outer bottom surface 243 of the boss 240.

[0049] The restricting protrusion 250 is provided on the plane 211a of the main body portion 211. The restricting protrusion 250 is, for example, columnar. The restricting protrusion 250 is located, for example, at the other end in the longitudinal direction of the main body portion 211 (that is, the end opposite to the side where the boss 240 is located). The restricting protrusion 250 is located from the center of the seal member 2 to the other side in the longitudinal direction of the seal member 2 (that is, the side opposite to the side where the boss 240 is located). In other words, the restricting protrusion 250 is displaced from the center of the seal member 2 to the other side in the arrangement direction of the seal members 2 and 3. The restricting protrusion 250 is inserted through the through hole 415 of the arrangement recess 410 from the main surface 430a side. The restricting protrusion 250 restricts the rotation of the seal member 2. The function of the restricting protrusion 250 will be described in detail later.

[0050] The connector holding portion 230 (also simply referred to as the holding portion 230) can hold the connector 5 movably. The connector 5 includes a fitting portion 50 that fits with the connector 880 and a held portion 51 that is held by the holding portion 230. The held portion 51 is plate-shaped and is slidably inserted into the holding portion 230 and held by the holding portion 230. The connector 5 is attached at a position closer to the center of the seal member 2 than the screw 6 in the arrangement direction of the seal members 2 and 3 (in other words, the longitudinal direction of the main body portion 211).

[0051] The holding part 230 is provided, for example, on the flat surface 211b of the main body part 211. The holding part 230 is located, for example, at the central part in the longitudinal direction of the flat surface 211b. The holding part 230 includes, for example, a pair of slide support parts 231, a pair of backside receiving parts 232, and an anti-disengagement structure 233. The pair of slide support parts 231 face each other with a space therebetween in the longitudinal direction of the main body part 211. The held part 51 of the connector 5 is disposed between the pair of slide support parts 231. A pair of guide grooves 231a are formed inside the pair of slide support parts 231. Each guide groove 231a extends along the slide movement direction D2 (see FIGS. 5 and 6) of the connector 5. Both ends of the slidably moved held part 51 are inserted into the pair of guide grooves 231a. The slide movement direction D2 is, for example, a direction along the flat surface 211b and a direction perpendicular to the longitudinal direction of the main body part 211 (in other words, a direction perpendicular to the arrangement direction of the seal members 2 and 3). The slide movement direction D2 and the longitudinal direction of the main body part 211 are directions along a specific plane (that is, a plane intersecting the fitting direction D1 of the connector 5).

[0052] The pair of backside receiving parts 232 are plate-shaped and are arranged with a space therebetween in the longitudinal direction of the main body part 211. The pair of backside receiving parts 232 are provided at positions facing the back side in the slide movement direction D2 with respect to the slidably moved held part 51. The pair of backside receiving parts 232 may be connected to each other to form one backside receiving part.

[0053] The anti-disengagement structure 233 is composed of, for example, a cantilever leaf spring and is plate-shaped. The anti-disengagement structure 233 extends along the slide movement direction D2. The base end of the anti-disengagement structure 233, which is a leaf spring, is fixed to the main body part 211. An engagement protrusion 233a that engages with an engagement hole 51a provided in the held part 51 of the connector 5 is provided at the tip of the anti-disengagement structure 233. The anti-disengagement structure 233 can be elastically deformed by bending so that the tip approaches the main body part 211.

[0054] Both end portions of the held portion 51 in a direction perpendicular to the slide movement direction D2 and the fitting direction D1 are inserted into a pair of guide grooves 231a. Then, the held portion 51 advances toward the back side in the slide movement direction D2 along the guide grooves 231a. At this time, the held portion 51 slides while pressing the engaging protrusion 233a of the anti-disengagement structure 233 toward the main body portion 211 side. When the held portion 51 further advances toward the back side in the slide movement direction D2, the flexural elastic deformation of the anti-disengagement structure 233 is released and the engaging protrusion 233a engages with the engaging hole 51a of the held portion 51. Thereby, the held portion 51 is held by the holding portion 230.

[0055] The connector 5 held by the holding portion 230 is in a floating state that is movable relative to the holding portion 230. The connector 5 is attached to the seal member 2 so as to be movable relative to the seal member 2 along a specific plane (that is, a plane intersecting the fitting direction D1 of the connector 5). The connector 5 is movable, for example, along the slide movement direction D2. Further, the connector 5 is movable along the longitudinal direction of the main body portion 211. The movement of the connector 5 toward the back side in the slide movement direction D2 is restricted by a pair of back side receiving portions 232, and the movement of the connector 5 toward the front side in the slide movement direction D2 is restricted by the engagement between the engaging protrusion 233a and the engaging hole 51a. The movement of the connector 5 along the longitudinal direction of the main body portion 211 is restricted by a pair of slide support portions 231.

[0056] The connector 5 has two connection terminals short-circuited to each other inside the fitting portion 50. Further, the connector 880 has two connection terminals electrically connected to a predetermined circuit of the mounting target 800. When the seal cover 1 is attached to the mounting target 800 and the connector 5 and the connector 880 are in a fitted state, the two connection terminals of the connector 5 and the two connection terminals of the connector 880 are electrically connected to each other. As a result, the two connection terminals of the connector 880 are short-circuited to each other. In this way, when the seal cover 1 is attached to the mounting target 800, since the two connection terminals of the connector 880 are short-circuited to each other, the predetermined circuit connected to the two connection terminals can recognize that the seal cover 1 has been attached to the mounting target 800. Therefore, the predetermined circuit can perform appropriate processing according to the attachment of the seal cover 1 to the mounting target 800. In this example, when the interlock connector 5 is fitted to the mating connector 880, the two connection terminals of the mating connector 880 are short-circuited to each other, thereby ensuring the attachment of the seal cover 1 to the mounting target 800.

[0057] As described above, in this example, the interlock connector 5 is attached to the seal member 2 so as to be relatively movable along a specific plane with respect to the seal member 2. Here, manufacturing errors or assembly errors may occur in the arrangement position of the mating connector 880. Also, manufacturing errors or assembly errors may occur in the holding position of the interlock connector 5 on the seal member 2. Since the interlock connector 5 is relatively movable along a specific plane with respect to the seal member 2, such errors are absorbed, making it easier to fit with the mating connector 880. Therefore, the workability of the operation of fitting the interlock connector 5 to the mating connector 880 is improved.

[0058] <Configuration Example of the Second Seal Member> The second seal member 3 is made of, for example, resin. The outer shape of the second seal member 3 as viewed in plan from a direction perpendicular to a specific plane is, for example, circular (specifically, a perfect circle). The second seal member 3 includes, for example, a second seal portion 310, an annular flange portion 320 that protrudes outward from the periphery of the second seal portion 310, and a boss 330 to which a screw 7 is attached. Further, the second seal member 3 includes, for example, a contact rib 340 that contacts the bottom of the second placement recess 420 when the second seal member 3 is placed in the second placement recess 420 of the shield cover 4.

[0059] The seal portion 310 that fits into the opening 831 of the mounting object 800 includes, for example, a main body portion 311 and a seal ring 312 attached to the main body portion 311. The main body portion 311 has, for example, a cylindrical shape. The outer shape of the main body portion 311 as viewed in plan from a direction perpendicular to a specific plane is, for example, circular (specifically, a perfect circle) according to the outer shape of the opening 831 as viewed in plan. The seal ring 312 is attached to the side surface of the main body portion 311. Specifically, an annular groove is provided on the side surface of the main body portion 311, and the seal ring 312 is fitted into the annular groove. In a state where the seal portion 310 is fitted into the opening 831, the seal ring 312 is in watertight contact with the inner peripheral wall of the opening 831, and the opening 831 is sealed by the seal portion 310. The main body portion 311, the flange portion 320, the boss 330, and the contact rib 340 are, for example, integrally formed.

[0060] The main body portion 311 has planes 311a and 311b that are parallel to each other. The seal member 3 is placed in the placement recess 420 such that the plane 311a of the main body portion 311 is located on the side of the placement recess 420 of the shield cover 4. The main body portion 311 has a cutout portion 360 that opens to the plane 311a.

[0061] The flange portion 320 extends outward from the end portion on the plane 311a side of the circumferential side surface of the main body portion 311 so as to surround the end portion. The flange portion 320 has a circular shape (specifically, a perfect circle) according to the planar shape of the main body portion 311.

[0062] The contact rib 340 stands upright on the flat surface 311a of the main body portion 311. The contact rib 340 extends in a circular shape (specifically, a perfect circle) along the edge of the circular flat surface 311a, for example. In a state where the seal member 3 is disposed in the disposed recess 420, the contact rib 340 contacts the inner bottom surface of the disposed recess 420.

[0063] The boss 330 to which the screw 7 is attached is provided inside the main body portion 311, for example. The boss 330 is located at the central portion of the main body portion 311. The boss 330 has, for example, a hollow cylindrical shape. The boss 330 extends from the plane 311b side to the plane 311a side along the thickness direction of the main body portion 311. There is a cutout portion 360 around the boss 330. A pilot hole 332 is provided in the boss 330. The pilot hole 332 opens to the tip surface 331 of the boss 330. The outer bottom surface 333 of the boss 330 is closed and protrudes outside the flat surface 311b of the main body portion 311. When the seal member 3 is disposed in the disposed recess 420 of the shield cover 4, the boss 330 is inserted through the through hole 421 of the disposed recess 420 from the main surface 430a side. In a state where the boss 330 is inserted through the through hole 421, the tip surface 331 of the boss 330 is located outside the shield cover 4. That is, the tip surface 331 is located outside the surface outside the disposed recess 420 (in other words, the surface on the main surface 430b side).

[0064] The screw 7 is, for example, a tapping screw having a washer head. The threaded portion 7b of the screw 7 is inserted into the pilot hole 332 of the boss 330 inserted through the through hole 412 of the shield cover 4 from the main surface 430b side and screwed into the boss 330. At this time, the washer 7a of the screw 7 contacts the tip surface 331 of the boss 330 protruding outside the shield cover 4 and does not contact the shield cover 4. And since the diameter of the washer 7a is larger than the diameter of the through hole 421, the screw 7 attached to the boss 330 is less likely to come out from the through hole 421 to the main surface 430a side. Thereby, the seal member 3 is attached to the shield cover 4. The screw 7 is screwed into the center of the seal member 3 and attached to the center.

[0065] In this example, since the outer bottom surface 333 of the boss 330 protrudes outward from the plane 311b of the main body portion 311, the thickness of the bottom portion of the boss 330 can be increased. As a result, even if the screw 7 is screwed into the boss 330 too much, the tip of the screw 7 is less likely to protrude from the outer bottom surface 333 of the boss 330.

[0066] <Example of the anti-rotation structure of the second seal member> In this example, the outer shape of the seal member 3 in plan view as viewed from a direction perpendicular to a specific plane is circular. Therefore, when the screw 7 is screwed into the boss 330 of the seal member 3, the seal member 3 may rotate together with the screw 7.

[0067] Therefore, the seal cover 1 has an anti-rotation structure for the seal member 3. The anti-rotation structure is composed of, for example, the above-described anti-rotation hole 422 provided in the shield cover 4 and the anti-rotation protrusion 10 inserted into the anti-rotation hole 422. The anti-rotation protrusion 10 protrudes outward along the radial direction of the circular plane 311a from the outer peripheral surfaces of the flange portion 320 and the contact rib 340 of the seal member 3, for example. The anti-rotation protrusion 10 is integrally formed with the flange portion 320 and the contact rib 340, for example. When the seal member 3 is disposed in the disposition recess 420 of the shield cover 4, the anti-rotation protrusion 10 is inserted into the anti-rotation hole 422 provided in the side surface portion of the disposition recess 420. As a result, when the seal member 3 attempts to rotate together with the screw 7, the anti-rotation protrusion 10 hits the inner peripheral wall of the anti-rotation hole 422, making it difficult for the seal member 3 to rotate.

[0068] <Regarding the floating of the seal member> The first seal member 2 in a state of being attached to the shield cover 4 is in a floating state in which it can move relative to the shield cover 4. Similarly, the second seal member 3 in a state of being attached to the shield cover 4 is in a floating state in which it can move relative to the shield cover 4.

[0069] FIG. 7 is a schematic view showing an example of a cross-sectional structure of the shield cover 4 and the first seal member 2. In FIG. 7, the screw 6 attached to the first seal member 2 is indicated by a two-dot chain line. FIG. 8 is a schematic view showing an example of a cross-sectional structure of the shield cover 4 and the second seal member 3. In FIG. 8, the screw 7 attached to the second seal member 3 is indicated by a two-dot chain line.

[0070] As shown in FIG. 7, a first clearance C1 (also simply referred to as clearance C1) exists inside a through hole 411 provided at the bottom of the placement recess 410 of the shield cover 4, that is, the through hole 411 through which the screw 6 is inserted. In this example, a clearance C1 exists between the inner peripheral wall of the through hole 411 and the outer peripheral surface of a boss 240 inserted into the through hole 411.

[0071] Also, as shown in FIG. 8, a second clearance C2 (also simply referred to as clearance C2) exists inside a through hole 421 provided at the bottom of the placement recess 420 of the shield cover 4, that is, the through hole 421 through which the screw 7 is inserted. In this example, a clearance C2 exists between the inner peripheral wall of the through hole 421 and the outer peripheral surface of a boss 330 inserted into the through hole 421.

[0072] Also, as shown in FIG. 7, a third clearance C3 (also simply referred to as clearance C3) exists inside a through hole 415 provided at the bottom of the placement recess 410 of the shield cover 4, that is, the through hole 415 through which the regulating projection 250 of the seal member 2 is inserted. The regulating projection 250 penetrates the shield cover 4 with the third clearance C3 present. A clearance C3 exists between the inner peripheral wall of the through hole 415 and the outer peripheral surface of the regulating projection 250.

[0073] The seal member 2 is relatively movable with respect to the shield cover 4 along a specific plane (that is, a plane intersecting the fitting direction D1 of the connector 5) according to the clearance C1. In other words, the seal member 2 is relatively movable with respect to the shield cover 4 along the main surfaces 430a and 430b of the base portion 430 of the shield cover 4 according to the clearance C1.

[0074] The seal member 2 is movable in all directions around the central axis of the through hole 411 along a specific plane. For example, the seal member 2 can move along the longitudinal direction of the shield cover 4. Also, the seal member 2 can move in a direction perpendicular to the longitudinal direction of the shield cover 4 and along a direction along the specific plane. Further, the seal member 2 can move in other directions along the specific plane.

[0075] Also, the seal member 2 can rotate relative to the shield cover 4 along the specific plane with the boss 240 as a fulcrum and thus move relative to the shield cover 4. In other words, the seal member 2 can rotate relative to the shield cover 4 along the specific plane with the screw 6 as a fulcrum and thus move relative to the shield cover 4. The relative movement of the seal member 2 relative to the shield cover 4 along the specific plane includes the relative rotation of the seal member 2 relative to the shield cover 4 along the specific plane with the boss 240 and the screw 6 as fulcrums. The seal member 2 can rotate, for example, both clockwise and counterclockwise with the screw 6 as a fulcrum.

[0076] The regulating protrusion 250 can regulate the rotation of the seal member 2 according to the clearance C3 by being inserted into the through hole 415 of the shield cover 4. When the seal member 2 rotates relative to the shield cover 4 along the specific plane with the screw 6 as a fulcrum, the regulating protrusion 250 hits the inner peripheral wall of the through hole 415, and the rotation of the seal member 2 is regulated. The maximum rotation amount of the seal member 2 is determined by the clearance C3. In this example, the clearance C3 is set larger than the clearance C1. Therefore, the maximum movement amount of the entire seal member 2 along the specific plane from the central axis of the through hole 411 is determined by the clearance C1.

[0077] Thus, in this example, the seal member 2 is movable relative to the shield cover 4 along a specific plane. Here, manufacturing errors, assembly errors, or the like may occur in the arrangement position of the opening 821 into which the seal portion 210 of the seal member 2 fits. Further, manufacturing errors, assembly errors, or the like may also occur in the relative position of the seal member 2 with respect to the shield cover 4. Since the seal member 2 is movable relative to the shield cover 4 along a specific plane, such errors can be absorbed, and the seal portion 210 can be more easily fitted into the opening 821. Therefore, the workability of the operation of fitting the seal portion 210 into the opening 821 is improved.

[0078] In this example, one end portion in the longitudinal direction of the seal member 2 is attached to the shield cover 4 by the screw 6. On the other hand, at the other end portion in the longitudinal direction of the seal member 2, the regulating projection portion 250 only penetrates the shield cover 4, and the other end portion is not attached to the shield cover 4. In such a case, when only the shield cover 4 of the shield cover 4 and the seal member 2 is held, the seal member 2 may tilt such that the other end portion thereof moves away from the shield cover 4 with one end portion as a fulcrum. That is, the seal member 2 may tilt with respect to the shield cover 4 with the screw 6 as a fulcrum. At this time, when the protruding amount of the regulating projection portion 250 from the shield cover 4 is small, there is a possibility that the regulating projection portion 250 comes out of the through hole 415 and detaches from the shield cover 4.

[0079] In this example, the regulating projection portion 250 protrudes outward from the shield cover 4 through an opening 4150 provided in the concave surface 4130 of the surface of the shield cover 4 (that is, the opening on the main surface 430b side of the through hole 415). Thereby, the protruding amount of the regulating projection portion 250 from the shield cover 4 can be increased. As a result, even when the seal member 2 tilts with respect to the shield cover 4 with the screw 6 as a fulcrum, the regulating projection portion 250 is less likely to detach from the shield cover 4.

[0080] Note that, as shown in FIG. 9, the opening 4150 may surround, for example, the base side (in other words, the proximal side or the main body part 211 side) rather than the center in the protruding direction of the restricting protrusion 250. When the tip side portion of the restricting protrusion 250 hits the inner peripheral wall of the through hole 415 of the shield cover 4, the restricting protrusion 250 may break. As in the example of FIG. 9, by surrounding the base side rather than the center in the protruding direction of the restricting protrusion 250, the restricting protrusion 250 comes into contact with the shield cover 4 on the base side. Thereby, the restricting protrusion 250 is less likely to break.

[0081] The seal member 3 can move relative to the shield cover 4 independently of the seal member 2 along a specific plane according to the clearance C2. Similar to the seal member 2, the seal member 3 can move in all directions around the central axis of the through hole 421, for example, along a specific plane. For example, the seal member 3 can move along the longitudinal direction of the shield cover 4. Also, the seal member 3 can move in a direction perpendicular to the longitudinal direction of the shield cover 4 and along a direction along a specific plane. Also, the seal member 3 can move in other directions along a specific plane. In this example, when the anti-rotation protrusion 10 is inserted into the anti-rotation hole 42, there is a clearance between the inner peripheral wall of the anti-rotation hole 422 and the anti-rotation protrusion 10. For this reason, the seal member 3 can move in all directions around the central axis of the through hole 421 along a specific plane.

[0082] Also, the seal member 3 can rotate relative to the shield cover 4 along a specific plane around the boss 330 and the screw 7 when attached to the shield cover 4 with the screw 7. This rotation of the seal member 3 is restricted by the anti-rotation structure. When the seal member 3 rotates while being attached to the shield cover 4, the anti-rotation protrusion 10 extending from the seal member 3 hits the inner peripheral wall of the anti-rotation hole 42, restricting the rotation of the seal member 3.

[0083] Thus, in this example, the seal member 3 is movable relative to the shield cover 4 along a specific plane. Similar to the opening 821, manufacturing errors, assembly errors, or the like may occur in the arrangement position of the opening 831 into which the seal portion 310 of the seal member 3 is fitted. Also, manufacturing errors, assembly errors, or the like may occur in the relative position of the seal member 3 with respect to the shield cover 4. Since the seal member 3 is movable relative to the shield cover 4 along a specific plane, such errors can be absorbed. Therefore, the seal portion 310 can be easily fitted into the opening 831. As a result, the workability of the operation of fitting the seal portion 310 into the opening 831 is improved.

[0084] <An example of a method for attaching a seal cover to an object to be attached> Figs. 10 to 13 are schematic views showing an example of the attachment process of the seal cover 1 to the object to be attached 800. In Figs. 10 to 13, the cross-sectional structure of the object to be attached 800 in the direction of arrow A-A shown in Fig. 4 is shown. Fig. 11 is a schematic view showing an example of a state in which the attachment process of the seal cover 1 has advanced further than Fig. 10. Fig. 12 is a schematic view showing an example of a state in which the attachment process of the seal cover 1 has advanced further than Fig. 11. Fig. 13 is a schematic view showing an example of a state in which the attachment process of the seal cover 1 is completed.

[0085] As shown in Fig. 10, with the seal members 2 and 3 facing the object to be attached 800 side, a plurality of regulating pins 850 of the attachment portion 870 provided on the object to be attached 800 are respectively inserted into the plurality of through holes 431 of the shield cover 4. By inserting the regulating pins 850 into the through holes 431, the attachment position of the seal cover 1 in the direction along the specific plane is regulated. The regulating pins 850 can also be said to be guide pins that guide the movement of the seal cover 1 toward the object to be attached 800.

[0086] With the regulation pin 850 inserted into the through-hole 431, when the seal cover 1 is brought closer to the object 800 to be attached, as shown in Fig. 11, the tip of the interlock connector 5 of the seal cover 1 begins to fit into the mating connector 880 of the object 800 to be attached. At this time, since the connector 5 is movable relative to the seal member 2 along a specific plane, it becomes easier for the operator to fit the connector 5 into the connector 880. Further, since the seal member 2 with the connector 5 attached is movable relative to the shield cover 4 along a specific plane, it becomes even easier for the operator to fit the connector 5 into the connector 880.

[0087] In this example, the dimension of the seal member 2 in the direction along the fitting direction D1 of the connector 5 (the vertical dimension in Fig. 11) is set such that the seal portion 210 of the seal member 2 does not fit into the opening 821 of the object 800 to be attached when the regulation pin 850 is inserted into the through-hole 431 and the tip of the connector 5 begins to fit into the connector 880. Also, the dimension of the seal member 3 in the direction along the fitting direction D1 is set such that the seal portion 310 of the seal member 3 does not fit into the opening 831 of the object 800 to be attached when the regulation pin 850 is inserted into the through-hole 431 and the tip of the connector 5 begins to fit into the connector 880.

[0088] When the seal cover 1 is brought even closer to the object 800 to be attached and the fitting of the connector 5 to the connector 880 progresses, as shown in Fig. 12, the seal portions 210 and 310 begin to fit into the openings 821 and 832 of the object 800 to be attached, respectively. At this time, since the regulation pin 850 is inserted into the through-hole 431 of the shield cover 4 and the connector 5 is partially fitted into the connector 880, the seal portions 210 and 310 begin to fit into the openings 821 and 832 in a state where the positions of the connector 5 and the shield cover 4 in the direction along the specific plane are regulated.

[0089] In this example, the connector 5 is movable relative to the seal member 2 along a specific plane, and the seal member 2 is movable relative to the shield cover 4 along the specific plane. As a result, the seal member 2 can move relative to each of the connector 5 and the shield cover 4 independently along the specific plane. Therefore, even when the seal part 210 starts to fit into the opening 821 with the positions of the connector 5 and the shield cover 4 in the direction along the specific plane regulated as in the example of FIG. 12, the seal part 210 can easily fit into the opening 821.

[0090] Further, since the seal member 3 is movable relative to the shield cover 4 along the specific plane, it is easier for the operator to fit the seal part 310 of the seal member 3 into the opening 831.

[0091] When the seal cover 1 is further brought closer to the mounting target 800 and the fitting of the seal parts 210 and 310 to the openings 821 and 831 progresses, as shown in FIG. 13, the main surface 430a of the base part 430 of the shield cover 4 contacts the tip surfaces of the bosses 860 of the mounting part 870 of the mounting target 800. Thereby, the movement of the seal cover 1 ends. In a state where the shield cover 4 is in contact with the tip surfaces of the bosses 860, the connector 5 is properly fitted to the connector 880, and the seal parts 210 and 310 are properly fitted to the openings 821 and 831. That is, in a state where the shield cover 4 is in contact with the tip surfaces of the bosses 860, the openings 821 and 831 are properly sealed by the seal cover 1.

[0092] Thereafter, a plurality of fixing bolts 11 are respectively inserted into a plurality of through holes 432 provided in the shield cover 4 and screwed into a plurality of bosses 860 of the mounting target 800. Thereby, the shield cover 4 is fixed to the mounting target 800, and the attachment of the seal cover 1 to the mounting target 800 is completed.

[0093] Note that before the connector 5 starts to fit into the connector 880, the seal portion 210 may start to fit into the opening 821. Even in this case, since the seal member 2 is relatively movable with respect to the shield cover 4 along a specific plane, the seal portion 210 is likely to fit into the opening 821.

[0094] As described above, in this example, since the seal members 2 and 3 are attached to one shield cover 4, by attaching one shield cover 4 to the attachment target 800, the openings 821 and 831 of the attachment target 800 can be sealed. Therefore, the workability of the work for sealing the openings 821 and 831 of the attachment target 800 is improved.

[0095] Also, in this example, the screw 6 passing through the shield cover 4 is attached at a position shifted from the center of the seal member 2 to one side in the arrangement direction of the seal members 2 and 3. Thereby, compared with the case where the screw 6 is attached to the center of the seal member 2, the attachment posture of the seal member 2 with respect to the shield cover 4 becomes easier to understand.

[0096] For example, when the seal member 2 is rotated 180 degrees with respect to its original attachment posture, the position of the through hole 411 of the shield cover 4 does not coincide with the position of the boss 240 of the seal member 2. Therefore, it becomes easier for the operator to notice that the seal member 2 is in a state different from its original attachment posture. Thus, the attachment workability of the seal member 2 with respect to the shield cover 4 is improved. When the connector holding portion 230 is located at the center of the seal member 2 as in this example, it is difficult for the operator to specify whether the seal member 2 is in its original attachment posture only by checking the position of the connector holding portion 230. Therefore, when the connector holding portion 230 is located at the center of the seal member 2 as in this example, it is effective that the screw 6 is attached at a position shifted from the center of the seal member 2.

[0097] Further, in this example, the regulating protrusion 250 is displaced from the center of the seal member 2 to the other side in the arrangement direction of the seal members 2 and 3. As a result, the screw 6 and the regulating protrusion 250 are located on opposite sides with the center of the seal member 2 therebetween.

[0098] Here, as described above, the seal member 2 is capable of rotating about the screw 6 along a specific plane. Therefore, if the seal member 2 does not include the regulating protrusion 250, the amount of movement of the portion of the seal member 2 on the side opposite to the screw 6 may become too large. As a result, the seal portion 210 of the seal member 2 may be less likely to fit into the opening 821 of the mounting target 800. When the screw 6 and the regulating protrusion 250 are located on opposite sides with the center of the seal member 2 therebetween as in this example, it is possible to prevent the amount of movement of the portion of the seal member 2 on the side opposite to the screw 6 from becoming too large. Thus, the seal portion 210 is more likely to fit into the opening 821, and the mounting workability of the seal cover 1 with respect to the mounting target 800 is improved.

[0099] Also, in this example, since the screw 7 is attached to the center of the circular seal member 3, it becomes difficult for the seal member 3 to rotate eccentrically. As a result, the seal portion 310 of the seal member 3 is more likely to fit into the opening 831 of the mounting target 800. Thus, the mounting workability of the seal cover 1 with respect to the mounting target 800 is improved.

[0100] Also, in this example, the dimension of the seal member 2 in the direction along the fitting direction D1 is set to a dimension such that the seal portion 210 of the seal member 2 does not fit into the opening 821 of the attachment target 800 when the regulation pin 850 is inserted into the through hole 431 and the tip of the connector 5 starts to fit into the connector 880 (see FIG. 11). In this case, with the positions of the connector 5 and the shield cover 4 in the direction along the specific plane being regulated, the seal portion 210 will start to fit into the opening 821 (see FIG. 12). As described above, since the seal member 2 is relatively movable along the specific plane with respect to each of the connector 5 and the shield cover 4, even when the positions of the connector 5 and the shield cover 4 in the direction along the specific plane are regulated, the seal portion 210 of the seal member 2 becomes easier to fit into the opening 821.

[0101] Note that the connector 5 may not be relatively movable with respect to the seal member 2. Also, the positions of the screw 6 and the regulation protrusion 250 may be interchanged. That is, the screw 6 may be located closer to the seal member 3 side than the center of the seal member 2, and the regulation protrusion 250 may be located on the side opposite to the screw 6 with respect to the center of the seal member 2.

[0102] In the above example, the boss 240 to which the screw 6 is attached is inserted into the through hole 411, but it does not have to reach the through hole 411. That is, the boss 240 does not have to be present in the through hole 411. In this case, the space between the inner peripheral wall of the through hole 411 and the outer peripheral surface of the screw portion 6b of the screw 6 inserted into the through hole 411 constitutes the first clearance C1. That is, the screw 6 penetrates the shield cover 4 with the first clearance C1 present.

[0103] Similarly, the boss 330 to which the screw 7 is attached does not have to reach the through hole 421. That is, the boss 330 does not have to be present in the through hole 421. In this case, the space between the inner peripheral wall of the through hole 421 and the outer peripheral surface of the screw portion 7b of the screw 7 inserted into the through hole 421 constitutes the second clearance C2. That is, the screw 7 penetrates the shield cover 4 with the second clearance C2 present.

[0104] As described above, the seal cover and the attachment target to which the seal cover is attached have been described in detail. However, all of the above descriptions are illustrative in all aspects, and this disclosure is not limited thereto. Also, the various modifications described above can be applied in combination as long as they do not conflict with each other. And it is understood that countless modifications that are not illustrated can be assumed without departing from the scope of this disclosure.

Explanation of Reference Numerals

[0105] 1 Seal cover 2 First seal member 3 Second seal member 4 Shield cover 5 Interlock connector 6 First screw 6a, 7a Washer 6b, 7b Screw part 7 Second screw 10 Anti-rotation protrusion 11 Fixing bolt 42 Anti-rotation hole 50 Fitting part 51 Held part 51a Engagement hole 210 First seal part 211, 311 Body part 211a, 311a Plane 211b, 311b Plane 212, 312 Seal ring 220, 320 Flange part 230 Connector holding part 231 Slide support part 231a Guide groove 232 Rear receiving part 233 Anti-disengagement structure 233a Engagement protrusion 240, 330, 860 Boss 241, 331 Tip surface 242, 332 Counterbore 243, 333 Outer bottom surface 250 Regulation protrusion part 260, 270, 340 Connecting rib 280, 281, 360 Cut-out part 310 Second sealing part 410 First placement recess 411, 412, 415, 421, 431, 432 Through hole 413 Dish-shaped recess 420 Second placement recess 422 Anti-rotation hole 430, 810 Base part 430a, 430b, 810a, 810b Main surface 800 Object to be attached 820 First cylindrical part 821 First opening 830 Second cylindrical part 831 Second opening 850 Regulation pin 870 Attachment part 880 Opposite connector 4130 Concave surface 4150 Opening C1 First clearance C2 Second clearance C3 Third clearance D1 Fitting direction D2 Slide movement direction

Claims

1. A seal cover that is attached to an object to be attached and has a first opening and a second opening that are arranged alongside the first opening and are smaller than the first opening, and that covers the first opening and the second opening, a first seal member having a first seal portion that fits into the first opening and seals the first opening, a second seal member having a second seal portion that fits into the second opening and seals the second opening and that is arranged alongside the first seal member, a shield cover to which the first seal member and the second seal member are attached and that is fixed to the object to be attached and has a first through hole and a second through hole, an interlock connector that is attached to the first seal member and guarantees attachment of the seal cover to the object to be attached, a first screw that is inserted through the first through hole of the shield cover and is attached to the first seal member, and a second screw that is inserted through the second through hole of the shield cover and is attached to the second seal member comprising: a first clearance exists inside the first through hole, a second clearance exists inside the second through hole, the object to be attached has a mating connector that mates with the interlock connector, when a plane intersecting the fitting direction of the interlock connector with respect to the mating connector is taken as a plane, the first seal member is relatively movable with respect to the shield cover along the plane according to the first clearance, the second seal member is relatively movable independently of the first seal member with respect to the shield cover along the plane according to the second clearance, the interlock connector is attached at a position closer to the center of the first seal member than the first screw in the arrangement direction of the first seal member and the second seal member, the first screw is attached at a position shifted from the center of the first seal member to one side in the arrangement direction, the second screw is attached at the center of the second seal member, the first seal member penetrates the shield cover with a third clearance and has a protrusion that restricts rotation of the first seal member, the protrusion is located shifted to the other side in the arrangement direction from the center of the first seal member, the protrusion protrudes outside the shield cover from an opening provided in a concave surface of the surface of the shield cover, a seal cover.

2. The seal cover according to claim 1, wherein the opening surrounds a root side rather than a center in a protruding direction of the protrusion, and the seal cover.

3. The seal cover according to claim 1 or claim 2, wherein a plan view outer shape of the second seal member viewed from a direction perpendicular to the one plane is circular, and the seal cover includes a rotation prevention structure of the second seal member.

4. The seal cover according to any one of claims 1 to 3, wherein the attachment target has a regulation pin protruding in a direction opposite to the fitting direction that regulates an attachment position of the seal cover in a direction along the one plane, the interlock connector is attached to the first seal member so as to be relatively movable along the one plane with respect to the first seal member, the shield cover has a third through hole through which the regulation pin is inserted, dimensions of the first seal member in a direction along the fitting direction are set to dimensions such that the regulation pin is inserted into the third through hole and the first seal portion does not fit into the first opening in a state where a tip of the interlock connector starts to fit into the mating connector, and the seal cover.

5. A seal cover attached to an attachment target having a first opening, a second opening arranged side by side with the first opening and smaller than the first opening, and covering the first opening and the second opening, wherein a first seal member having a first seal portion that fits into the first opening and seals the first opening, a second seal member having a second seal portion that fits into the second opening and seals the second opening and arranged side by side with the first seal member, a shield cover to which the first seal member and the second seal member are attached and fixed to the attachment target and having a first through hole and a second through hole, an interlock connector attached to the first seal member that guarantees attachment of the seal cover to the attachment target, a first screw inserted through the first through hole of the shield cover and attached to the first seal member, a second screw inserted through the second through hole of the shield cover and attached to the second seal member are provided, a first clearance exists inside the first through hole, a second clearance exists inside the second through hole, the attachment target has a mating connector that fits with the interlock connector. When a plane intersecting the fitting direction of the interlock connector with respect to the mating connector is taken as a plane, the first seal member is movable relative to the shield cover along the plane according to the first clearance, the second seal member is independently movable relative to the shield cover along the plane according to the second clearance, the interlock connector is attached at a position closer to the center of the first seal member than the first screw in the arrangement direction of the first seal member and the second seal member, the first screw is attached at a position shifted from the center of the first seal member to one side in the arrangement direction, the second screw is attached to the center of the second seal member, the planar view outer shape of the second seal member as viewed from a direction perpendicular to the plane is circular, A seal cover having a rotation prevention structure for the second seal member.

6. A seal cover attached to an attachment target having a first opening and a second opening arranged side by side with the first opening and smaller than the first opening, and covering the first opening and the second opening, a first seal member having a first seal portion fitted into the first opening to seal the first opening, a second seal member having a second seal portion fitted into the second opening to seal the second opening and arranged side by side with the first seal member, a shield cover to which the first seal member and the second seal member are attached, fixed to the attachment target, and having a first through hole and a second through hole, an interlock connector attached to the first seal member to ensure attachment of the seal cover to the attachment target, a first screw inserted through the first through hole of the shield cover and attached to the first seal member, a second screw inserted through the second through hole of the shield cover and attached to the second seal member are provided, a first clearance exists inside the first through hole, a second clearance exists inside the second through hole, the attachment target has a mating connector that mates with the interlock connector When a plane intersecting the fitting direction of the interlock connector with respect to the mating connector is defined as a plane, the first seal member is relatively movable with respect to the shield cover along the plane according to the first clearance, the second seal member is relatively movable independently of the first seal member with respect to the shield cover along the plane according to the second clearance, the interlock connector is attached at a position closer to the center of the first seal member than the first screw in the arrangement direction of the first seal member and the second seal member, the first screw is attached at a position shifted from the center of the first seal member to one side in the arrangement direction, the second screw is attached to the center of the second seal member, the attachment target has a regulating pin protruding in a direction opposite to the fitting direction, which regulates the attachment position of the seal cover in the direction along the plane, the interlock connector is attached to the first seal member so as to be relatively movable with respect to the first seal member along the plane, the shield cover has a third through-hole through which the regulating pin is inserted, the dimension of the first seal member in the direction along the fitting direction is set to a dimension such that the first seal portion does not fit into the first opening in a state where the regulating pin is inserted into the third through-hole and the tip of the interlock connector starts to fit into the mating connector.

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