Seal cover

Abstract

To provide a technology that can improve fitting operability of a seal member to a shield cover.SOLUTION: A first screw is fitted to a position displaced from the center of a first seal member to one side in an arrangement direction of the first seal member and a second seal member. The first seal member goes through the shield cover with a first clearance, and has a projection part regulating rotations of the first seal member. The projection part is positioned displaced from the center of the first seal member to the other side in the arrangement direction. The projection part projects outward the shield cover from an opening provided on a recessed face of the surface of the shield cover.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[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) that has a portion that fits into the opening of the attachment target, and a shield case to which the seal member is attached and which is fixed to the attachment target. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2017-91809 Summary of the Invention [Problem 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, so the worker who attaches the seal member to the shield cover must be careful not to attach the seal member in a state where it is rotated 180 degrees from its original installation position.

[0005] Therefore, an object of the present invention is to provide a technique that can improve the workability of attaching a seal member to a shield cover. [Means for solving the problem]

[0006] The seal cover of the present disclosure is attached to an attachment object having a first opening and a second opening aligned with the first opening, and covers the first opening and the second opening, and includes a first seal member having a first seal portion that fits into the first opening to seal the first opening, a second seal member that has a second seal portion that fits into the second opening to seal the second opening and is aligned 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 object, and having a first through hole and a second through hole, and a seal member that is inserted into the first through hole of the shield cover and attached to the first seal member. and a second screw that is inserted into the second through hole of the shield cover and attached to the second seal member, the first screw being 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, the first seal member penetrating the shield cover with a first clearance and having a protrusion that restricts rotation of the first seal member, the protrusion being positioned shifted from the center of the first seal member to the other side in the alignment direction, and the protrusion protruding to the outside of the shield cover from an opening provided in a concave surface of the surface of the shield cover. [Effects of the Invention]

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

[0008] [Figure 1] FIG. 1 is a schematic perspective view showing an example of a seal cover. [Figure 2] FIG. 2 is a schematic perspective view showing an example of a seal cover, viewed from the opposite side to FIG. [Figure 3] FIG. 3 is a schematic side view showing an example of a seal cover. [Figure 4] FIG. 4 is a schematic plan view showing an example of an attachment target. [Figure 5] FIG. 5 is a schematic exploded perspective view showing an example of a seal cover. [Figure 6] FIG. 6 is a schematic exploded perspective view showing an example of a seal cover, viewed from the opposite side to FIG. [Figure 7] FIG. 7 is a schematic view showing an example of the cross-sectional structure of the shield cover and the first seal member. [Figure 8] FIG. 8 is a schematic view showing an example of the cross-sectional structure of the shield cover and the second seal member. [Figure 9] FIG. 9 is a schematic view showing an example of the cross-sectional structure of the second seal member. [Figure 10] FIG. 10 is a schematic diagram showing an example of the process of attaching the seal cover. [Figure 11] FIG. 11 is a schematic view showing an example of a state that is more advanced than that shown in FIG. 10 in the process of attaching the seal cover. [Figure 12] FIG. 12 is a schematic view showing an example of a state that is more advanced than that shown in FIG. 11 in the process of attaching the seal cover. [Figure 13] FIG. 13 is a schematic diagram showing an example of a state in which the process of attaching the seal cover is completed. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the 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 attached to an attachment object having a first opening and a second opening aligned with the first opening, and covering the first opening and the second opening, the seal cover comprising: a first seal member having a first seal portion that fits into the first opening to seal the first opening; a second seal member that has a second seal portion that fits into the second opening to seal the second opening and is aligned 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 object, the shield cover having a first through hole and a second through hole; and a seal member that is inserted into the first through hole of the shield cover and attached to the first seal member. The shield cover includes a first screw inserted into the first through hole of the shield cover and a second screw inserted into the second through hole of the shield cover and attached to the second seal member, the first screw being attached at a position offset from the center of the first seal member to one side in the arrangement direction of the first seal member and the second seal member, the first seal member penetrating the shield cover with a first clearance and having a protrusion that restricts rotation of the first seal member, the protrusion being offset from the center of the first seal member to the other side in the arrangement direction, and the protrusion protruding to the outside of the shield cover through an opening provided in a concave surface of the surface of the shield cover. According to the present disclosure, the first screw inserted into the first through hole of the shield cover is attached at a position offset from the center of the first seal member to one side in the arrangement direction of the first seal member and the second seal member. This makes it easier to see the attachment position of the first seal member to the shield cover. As a result, the workability of attaching the first seal member to the shield cover is improved. Furthermore, according to the present disclosure, the first screw and the protruding portion are located on opposite sides of the center of the first seal member. This prevents the portion of the first seal member opposite the first screw from moving too much. This makes it easier for the first seal portion of the first seal member to fit into the first opening. Furthermore, according to the present disclosure, the protruding distance from the shield cover can be increased. This makes it difficult for the protruding portion to come off the shield cover even if the first seal member is tilted relative to the shield cover with the first screw as a fulcrum.

[0012] (2) The opening may surround the protrusion from the center toward the base of the protrusion. In this case, the protrusion comes into contact with the shield cover at the base, making the protrusion less likely to break.

[0013] (3) An interlock connector is attached to the first seal member and ensures the attachment of the seal cover to the attachment object, a second clearance exists inside the first through hole, the attachment object has a mating connector that mates with the interlock connector, and when a plane that intersects the mating direction of the interlock connector with the mating connector is defined as one plane, the first seal member may be movable relative to the shield cover along the one plane in accordance with the first clearance.

[0014] (4) An interlock connector is attached to the first seal member to ensure the attachment of the seal cover to the attachment object, and the interlock connector is attached at a position closer to the center of the first seal member in the alignment direction than the first screw, and the first screw may be attached at a position shifted from the center of the first seal member to one side in the alignment direction.

[0015] (5) The first seal member may have a holding portion that holds the interlock connector, and the holding portion may be located in a central portion of the first seal cover.

[0016] (6) The second screw may be attached to the center of the second seal member and may include a structure for preventing rotation of the second seal member. In this case, when the second screw is attached to the second seal member, the second seal member is less likely to rotate together with the second screw.

[0017] (7) The interlock connector may include an interlock connector attached to the first seal member and ensuring attachment of the seal cover to the attachment target, the attachment target having a mating connector that mates with the interlock connector, wherein, assuming that a plane intersecting a mating direction of the interlock connector with the mating connector is defined as one plane, the attachment target has a restricting pin that protrudes in a direction opposite to the mating direction and restricts the 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 movable along the one plane relative to the first seal member, the shield cover has a third through hole through which the restricting pin is inserted, and the dimension of the first seal member in the direction along the mating direction is set so that the first seal portion does not fit into the first opening when the restricting pin is inserted into the third through hole and the tip of the interlock connector begins to fit into the mating connector. In this case, the first seal portion begins to fit into the first opening with the positions of the interlock connector and the shield cover restricted in the direction along the one plane. When the interlock connector is movable relative to the first seal member along one plane, and the first seal member is movable relative to the shield cover along one plane, the first seal member is movable relative to both the interlock connector and the shield cover along one plane. Therefore, even when the positions of the interlock connector and the shield cover in the direction along the one plane are restricted, the first seal portion of the first seal member can easily fit into the first opening.

[0018] [Details of the embodiments of the present disclosure] Specific examples of the seal cover of the present disclosure will be described below with reference to the drawings. Note that the present invention is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims.

[0019] <Seal cover overview> FIG. 1 is a schematic perspective view showing an example of a seal cover 1. FIG. 2 is a schematic perspective view showing an example of a 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 a seal cover 1 viewed from the opposite side of FIG. 1. FIG. 3 is a schematic side view showing an example of a seal cover 1. FIG. 4 is a schematic plan view showing an example of an attachment object 800 to which the seal cover 1 is attached. In FIG. 3, the cross-sectional structure of the attachment object 800 taken along the arrow AA shown in FIG. 4 is indicated by a two-dot chain line.

[0020] 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 aligned with the first opening 821 and is smaller than the first opening 821. The attachment target 800 also includes a mating connector 880 that mates with the interlock connector 5 included in the seal cover 1.

[0021] 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 to seal 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 to seal the second opening 831. The shield cover 4 is fixed to the attachment target 800, for example, and provides electromagnetic shielding for the openings 821 and 831. The interlock connector 5 is attached to the first seal member 2, for example, and ensures attachment of the seal cover 1 to the attachment target 800.

[0022] By sealing the openings 821 and 822 of the attachment target 800 together with the seal cover 1, it becomes difficult for water, foreign matter, etc. to enter the attachment target 800 through the openings 821 and 822. Furthermore, it becomes difficult for unwanted electromagnetic waves to enter the attachment target 800 through the openings 821 and 822, and it also becomes difficult for unwanted electromagnetic waves to be emitted to the outside from the openings 821 and 822.

[0023] <Example of installation configuration> The attachment object 800 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 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 forms, for example, a part of a housing that houses multiple parts including the mating connector 880.

[0024] The attachment portion 870 includes, for example, a plate-shaped base portion 810, a first cylindrical portion 820 and a second cylindrical portion 830 connected to the base portion 810, at least one restriction pin 850, and at least one boss 860.

[0025] 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 is, for example, rectangular. The base portion 810 has a main surface 810a and a main surface 810b (see FIG. 3) that are parallel to each other.

[0026] The first cylindrical portion 820 and the second cylindrical portion 830 are erected on a main surface 810a of the base portion 810. The first cylindrical portion 820 (also simply referred to as the cylindrical portion 820) forms a first opening 821. The first opening 821 is formed by a hollow portion inside the first cylindrical portion 820. In other words, the first opening 821 is formed by a space surrounded by the first cylindrical portion 820. The second cylindrical portion 830 (also simply referred to as the cylindrical portion 830) forms a second opening 831. The second opening 831 is formed by a hollow portion inside the second cylindrical portion 830. The openings 821 and 831 are cylindrical holes that penetrate the base portion 810.

[0027] The outer shape of opening 821 in a plan view is, for example, elliptical. The outer shape of opening 831 in a plan view is, for example, circular (more specifically, perfect circular). Opening 831 is smaller than opening 821. The opening area of ​​opening 831 is smaller than the opening area of ​​opening 821. Openings 821 and 831 are aligned, for example, along the longitudinal direction of base portion 810. The longitudinal direction of elliptical opening 831 is aligned along the alignment direction of openings 821 and 831, in other words, along the longitudinal direction of base portion 810.

[0028] 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 in a direction perpendicular to the main surface 810a. The fitting direction D1 (see FIG. 3) of the connector 5 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.

[0029] For example, at least one restriction pin 850 is provided upright on the main surface 810a of the base portion 810. The restriction pin 850 extends along a direction perpendicular to the main surface 810a. The restriction pin 850 protrudes in the opposite direction to the mating direction D1 of the connector 5. In this example, a plurality of restriction pins 850 are provided on the main surface 810a, but the number of restriction pins 850 may be one. For example, two restriction pins 850 are provided on the main surface 810a.

[0030] The restriction pin 850 restricts the attachment position of the seal cover 1 in a direction along the main surface 810a. When a plane intersecting the fitting direction D1 of the connector 5 to the connector 880 is defined as a plane, the restriction pin 850 restricts the attachment position of the seal cover 1 in a direction along the plane. Hereinafter, the plane may be referred to as a specific plane.

[0031] The two restriction pins 850 of the attachment target 800 are provided, for example, at both longitudinal ends of the base portion 810. The two restriction pins 850 are, for example, lined up along the longitudinal direction of the base portion 810. The restriction pins 850 are, for example, provided at the center of each longitudinal end of the base portion 810.

[0032] At least one boss 860, for example, is provided upright on the main surface 810a of the base portion 810. A fixing bolt for fixing the seal cover 1 to the attachment portion 870 is screwed into the boss 860. In this example, multiple 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 corners of the main surface 810a of the base portion 810. The remaining 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 regulating pins 850 are aligned, for example, along the longitudinal direction of the base portion 810.

[0033] <Example of seal cover configuration> 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, the seal cover 1 includes, in addition to the first seal member 2, the second seal member 3, the shield cover 4, and the interlock connector 5, a first screw 6 (also simply referred to as the screw 6) for attaching the first seal member 2 to the shield cover 4, and a second screw 7 (also simply referred to as the screw 7) for attaching the second seal member 3 to the shield cover 4. The first screw 6 penetrates the shield cover 4 and is attached to the first seal member 2. The second screw 7 penetrates the shield cover 4 and is attached to the second seal member 3.

[0034] <Shield cover configuration example> The shield cover 4 is formed by pressing a metal plate made of, for example, aluminum or iron. The shield cover 4 includes, for example, a plate-shaped base portion 430 fixed to a mounting portion 870 of the mounting object 800, and a first mounting recess 410 and a second mounting recess 420 connected to the base portion 430. Each of the mounting recesses 410 and 420 is, for example, a dish-shaped recess. The first seal member 2 is disposed in the first mounting recess 410 (also simply referred to as the mounting recess 410), and the second seal member 3 is disposed in the second mounting recess 420 (also simply referred to as the mounting recess 420).

[0035] The base portion 430 extends outward in a planar shape from the periphery of the openings of the placement 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.

[0036] Each of the dish-shaped arrangement recesses 410 and 420 is recessed so as to protrude toward the main surface 430b of the base portion 430. As a result, each of the arrangement recesses 410 and 420 opens toward the main surface 430a of the base portion 430. The outline shape of the opening of the arrangement recess 410 in a plan view is, for example, elliptical. The outline shape of the opening of the arrangement recess 420 in a plan view is, for example, circular (more specifically, a perfect circle). The opening of the arrangement recess 420 is smaller than the opening of the arrangement recess 410. In other words, 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 aligned, for example, along the longitudinal direction of the base portion 430. The longitudinal direction of the elliptical opening of the arrangement recess 410 is aligned along the alignment direction of the arrangement recesses 410 and 420, in other words, along the longitudinal direction of the base portion 430.

[0037] The base portion 430 has a plurality of through holes 431 through which a plurality of regulating pins 850 of the attachment target 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 provided, for example, at both ends of the base portion 430 in the longitudinal direction. The two through holes 431 are, for example, lined up along the longitudinal direction of the base portion 430. Each through hole 431 is provided in the center of an end of the base portion 430 in the longitudinal direction.

[0038] The base portion 430 has a plurality of through holes 432 penetrating through it in the thickness direction. A plurality of fixing bolts are inserted into the plurality of through holes 432, respectively, and threaded into a plurality of bosses 860 of the attachment target 800. The base portion 430 has, for example, five through holes 432. Four of the five through holes 432 are provided, for example, at the four corners of the base portion 430. The remaining 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 aligned, for example, along the longitudinal direction of the base portion 430. The shield cover 4 is fixed to the attachment portion 870 of the attachment target 800 with, for example, five fixing bolts. The fixing bolts are inserted into the through holes 432 of the shield cover 4 and threaded into the bosses 860 of the attachment target 800.

[0039] 5 and 6, a through hole 411 through which a screw 6 is inserted is provided in the oval bottom of the placement recess 410. The screw 6 is inserted into the through hole 411 from the main surface 430b side of the base portion 430, and attached to the seal member 2 placed in the placement recess 410.

[0040] The bottom of the placement recess 410 has a dish-shaped recess 413 that is recessed toward the main surface 430a. The dish-shaped recess 413 opens toward the main surface 430b. The inner surface of the dish-shaped recess 413 forms a concave surface 4130. The concave surface 4130 is provided on the surface of the shield cover 4. The bottom of the dish-shaped recess 413 is provided with a through hole 415 through which a restricting protrusion 250 (described below) provided on the seal member 2 is inserted. An 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. More specifically, the opening 4150 is provided at the bottom of the concave surface 4130. The restricting protrusion 250 of the seal member 2 protrudes from the opening 4150 to the outside of the shield cover 4.

[0041] 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 arranged in the arrangement recess 420. In addition, a detent hole 422 through which a detent protrusion 10, which will be described later, is inserted is provided in the side surface of the arrangement recess 420. The detent hole 422 is, for example, a through hole that penetrates the side surface of the arrangement recess 420 in its thickness direction. The detent protrusion 10 and the detent hole 422 constitute a detent structure that prevents the seal member 3 from rotating. The detent structure will be described in detail later.

[0042] <Configuration example of first seal member and interlock connector> The first seal member 2 is made of, for example, resin. When viewed from a direction perpendicular to a specific plane (i.e., a plane intersecting the fitting direction D1), the outline of the first seal member 2 in a plan view is, for example, elliptical. 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. Furthermore, the first seal member 2 includes, for example, a restricting protrusion portion 250 and abutment ribs 260 and 270 that abut against the bottom of the first arrangement recess 410 when the first seal member 2 is placed in the first arrangement recess 410 of the shield cover 4.

[0043] The seal portion 210 that fits into the opening 821 of the attachment target 800 includes, for example, a main body portion 211 and a seal ring 212 attached to the main body portion 211. The main body portion 211 has, for example, a slightly flattened columnar shape. The outer shape of the main body portion 211 in a plan view when viewed from a direction perpendicular to a specific plane is, for example, an ellipse, corresponding to the outer shape of the opening 821 in a plan view. The seal 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 in the side surface of the main body portion 211, and the seal ring 212 is fitted into the annular groove. When the seal portion 210 is fitted into the opening 821, the seal ring 212 comes into watertight contact with the inner peripheral wall of the opening 821 (in other words, the inner peripheral surface of the tubular portion 820), and the opening 821 is sealed by the seal portion 210. The main body 211, the flange 220, the connector holding portion 230, the boss 240, the restricting protrusion 250, the contact rib 260 and the contact rib 270 are, for example, integrally molded.

[0044] The main body 211 has flat surfaces 211a and 211b that are parallel to each other. The seal member 2 is placed in the placement recess 410 so that the flat surface 211a of the main body 211 is located on the placement recess 410 side of the shield cover 4. The main body 211 has a lightening portion 280 that opens to the flat surface 211a and a lightening portion 281 that opens to the flat surface 211b.

[0045] The flange portion 220 extends outward from the end portion on the flat surface 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 ring shape corresponding to the outer shape of the main body portion 211 in a plan view.

[0046] The abutment ribs 260 and 270 are erected on the flat surface 211a of the main body portion 211. The abutment rib 260 is provided at one longitudinal end of the flat surface 211a of the main body portion 211. The abutment rib 270 is provided at the other longitudinal end of the flat surface 211a of the main body portion 211. Each of the abutment ribs 260 and 270 extends in an arc shape along the outer edge of the longitudinal end of the flat surface 211a. When the seal member 2 is placed in the placement recess 410, the abutment ribs 260 and 270 abut against the inner bottom surface of the placement recess 410.

[0047] The boss 240 to which the screw 6 is attached is provided, for example, inside the main body 211. The boss 240 is located at one longitudinal end of the main body 211. The boss 240 has, for example, a hollow cylindrical shape. The boss 240 extends along the thickness direction of the main body 211 from the flat surface 211b side to the flat surface 211a side. A lightening portion 280 exists around the boss 240. A pilot hole 242 is provided in the boss 240. The pilot hole 242 opens to a tip end surface 241 of the boss 240. An outer bottom surface 243 of the boss 240 is closed and protrudes outward beyond the flat surface 211b of the main body 211. When the seal member 2 is placed in the placement recess 410 of the shield cover 4, the boss 240 is inserted into the through hole 411 of the placement recess 410 from the main surface 430a side. When the boss 240 is inserted into 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 arrangement recess 410 (in other words, the surface on the main surface 430b side).

[0048] The screw 6 is, for example, a tap screw (also called a tapping screw) having a washer head. The threaded portion 6b of the screw 6 is inserted from the main surface 430b side into the pilot hole 242 of the boss 240 inserted into the through hole 411 of the shield cover 4, and is 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 outward from the shield cover 4, but does not contact the shield cover 4. The diameter of the washer 6a is larger than the diameter of the through hole 411, so that the screw 6 attached to the boss 240 is less likely to come out of the through hole 411 toward the main surface 430a. This allows the seal member 2 to be attached to the shield cover 4. The screw 6 is attached to 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 to 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.

[0049] In this example, the outer bottom surface 243 of the boss 240 protrudes outward from the flat surface 211b of the main body 211, which makes it possible to increase the thickness of the bottom of the boss 240. This makes it difficult for the tip of the screw 6 to protrude from the outer bottom surface 243 of the boss 240, even if the screw 6 is screwed too far into the boss 240.

[0050] The restricting protrusion 250 is provided on the flat surface 211a of the main body 211. The restricting protrusion 250 is, for example, cylindrical. The restricting protrusion 250 is located, for example, at the other longitudinal end of the main body 211 (i.e., the end opposite the side where the boss 240 is located). The restricting protrusion 250 is located on the other longitudinal side of the seal member 2 (i.e., the side opposite the side where the boss 240 is located) from the center of the seal member 2. In other words, the restricting protrusion 250 is located offset 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 into the through-hole 415 of the arrangement recess 410 from the main surface 430a side. The restricting protrusion 250 restricts rotation of the seal member 2. The function of the restricting protrusion 250 will be described in detail later.

[0051] The connector holding portion 230 (also simply referred to as the holding portion 230) is capable of movably holding the connector 5. 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 screws 6 in the arrangement direction of the seal members 2 and 3 (in other words, the longitudinal direction of the main body portion 211).

[0052] The holding portion 230 is provided on, for example, the flat surface 211b of the main body portion 211. The holding portion 230 is located, for example, in the center of the flat surface 211b in the longitudinal direction. The holding portion 230 includes, for example, a pair of slide support portions 231, a pair of rear receiving portions 232, and a slip-out prevention structure 233. The pair of slide support portions 231 face each other with a gap in between in the longitudinal direction of the main body portion 211. The held portion 51 of the connector 5 is disposed between the pair of slide support portions 231. A pair of guide grooves 231a is formed inside the pair of slide support portions 231. Each guide groove 231a extends along the sliding movement direction D2 (see FIGS. 5 and 6) of the connector 5. Both ends of the slidably moved held portion 51 are inserted into the pair of guide grooves 231a. The sliding movement direction D2 is, for example, a direction along the plane 211b and perpendicular to the longitudinal direction of the main body 211 (in other words, a direction perpendicular to the arrangement direction of the sealing members 2 and 3). The sliding movement direction D2 and the longitudinal direction of the main body 211 are directions along a specific plane (i.e., a plane intersecting the fitting direction D1 of the connector 5).

[0053] The pair of rear receiving portions 232 are plate-shaped and are arranged at an interval in the longitudinal direction of the main body portion 211. The pair of rear receiving portions 232 are provided at positions facing the rear side of the slidably moved held portion 51 in the sliding movement direction D2. The pair of rear receiving portions 232 may be connected to each other to form a single rear receiving portion.

[0054] The fall-out prevention structure 233 is, for example, configured as a cantilevered leaf spring and has a plate shape. The fall-out prevention structure 233 extends along the sliding movement direction D2. The base end of the fall-out prevention structure 233, which is a leaf spring, is fixed to the main body 211. The tip of the fall-out prevention structure 233 is provided with an engaging protrusion 233a that engages with an engaging hole 51a provided in the held portion 51 of the connector 5. The fall-out prevention structure 233 can be flexibly and elastically deformed so that the tip approaches the main body 211.

[0055] Both ends of the held portion 51 in a direction perpendicular to the sliding movement direction D2 and the fitting direction D1 are inserted into a pair of guide grooves 231a. The held portion 51 then moves toward the rear in the sliding movement direction D2 along the guide grooves 231a. At this time, the held portion 51 slides while pressing the engaging protrusions 233a of the fall-off prevention structure 233 toward the main body portion 211. As the held portion 51 moves further toward the rear in the sliding movement direction D2, the flexible elastic deformation of the fall-off prevention structure 233 is released, and the engaging protrusions 233a engage with the engaging holes 51a of the held portion 51. As a result, the held portion 51 is held by the holding portion 230.

[0056] The connector 5 held by the holding portion 230 is in a floating state, movable relative to the holding portion 230. The connector 5 is attached to the sealing member 2 so as to be movable relative to the sealing member 2 along a specific plane (i.e., a plane intersecting the fitting direction D1 of the connector 5). The connector 5 is movable, for example, along the sliding movement direction D2. Furthermore, the connector 5 is movable along the longitudinal direction of the main body 211. Movement of the connector 5 toward the rear in the sliding movement direction D2 is restricted by a pair of rear-side receiving portions 232, and movement of the connector 5 toward the front in the sliding movement direction D2 is restricted by the engagement between the engaging protrusion 233a and the engaging hole 51a. Movement of the connector 5 along the longitudinal direction of the main body 211 is restricted by a pair of sliding support portions 231.

[0057] The connector 5 has two connection terminals inside the fitting portion 50 that are short-circuited to each other. The connector 880 also has two connection terminals that are electrically connected to a predetermined circuit included in the attachment target 800. When the seal cover 1 is attached to the attachment target 800 and the connector 5 and the connector 880 are fitted together, the two connection terminals of the connector 5 are electrically connected to the two connection terminals of the connector 880. This causes the two connection terminals of the connector 880 to be short-circuited to each other. In this way, when the seal cover 1 is attached to the attachment target 800, the two connection terminals of the connector 880 are short-circuited to each other, allowing the predetermined circuit connected to the two connection terminals to recognize that the seal cover 1 has been attached to the attachment target 800. Therefore, the predetermined circuit can perform appropriate processing in response to the attachment of the seal cover 1 to the attachment target 800. In this example, when the interlock connector 5 is mated with the mating connector 880, the two connection terminals of the mating connector 880 are short-circuited to each other, thereby ensuring that the seal cover 1 is attached to the attachment object 800.

[0058] As described above, in this example, the interlock connector 5 is attached to the seal member 2 so as to be movable relative to the seal member 2 along a specific plane. Here, manufacturing errors, assembly errors, etc. may occur in the arrangement position of the mating connector 880. Furthermore, manufacturing errors, assembly errors, etc. may also occur in the holding position of the interlock connector 5 in the seal member 2. Because the interlock connector 5 is movable relative to the seal member 2 along the specific plane, such errors can be absorbed and it becomes easier to mate with the mating connector 880. This improves the workability of mating the interlock connector 5 with the mating connector 880.

[0059] <Configuration example of second seal member> The second seal member 3 is made of, for example, resin. The outer shape of the second seal member 3 in a plan view when viewed from a direction perpendicular to the specific plane is, for example, circular (more specifically, perfect circular). 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 the screw 7 is attached. Furthermore, the second seal member 3 includes, for example, an abutment rib 340 that abuts against the bottom of the second arrangement recess 420 when the second seal member 3 is arranged in the second arrangement recess 420 of the shield cover 4.

[0060] The seal portion 310 that fits into the opening 831 of the attachment target 800 includes, for example, a main body 311 and a seal ring 312 attached to the main body 311. The main body 311 is, for example, cylindrical. The planar outer shape of the main body 311 when viewed from a direction perpendicular to a specific plane is, for example, circular (more specifically, perfect circular) according to the planar outer shape of the opening 831. The seal ring 312 is attached to the side surface of the main body 311. Specifically, an annular groove is provided in the side surface of the main body 311, and the seal ring 312 is fitted into the annular groove. When the seal portion 310 is fitted into the opening 831, the seal ring 312 comes into watertight contact with the inner circumferential wall of the opening 831, and the opening 831 is sealed by the seal portion 310. The main body 311, the flange portion 320, the boss 330, and the abutment rib 340 are, for example, integrally molded.

[0061] The main body 311 has a flat surface 311a and a flat surface 311b that are parallel to each other. The seal member 3 is placed in the placement recess 420 so that the flat surface 311a of the main body 311 is located on the placement recess 420 side of the shield cover 4. The main body 311 has a lightening portion 360 that opens to the flat surface 311a.

[0062] Flange portion 320 extends outward from the end portion on flat surface 311a side of the peripheral side surface of main body portion 311 so as to surround the end portion. Flange portion 320 has a circular shape (more specifically, a perfect circle) according to the shape of main body portion 311 in a plan view.

[0063] The contact rib 340 is erected on the flat surface 311a of the main body 311. The contact rib 340 extends, for example, in a circular shape (specifically, a perfect circle) along the edge of the circular flat surface 311a. When the seal member 3 is placed in the placement recess 420, the contact rib 340 comes into contact with the inner bottom surface of the placement recess 420.

[0064] The boss 330 to which the screw 7 is attached is provided, for example, inside the main body 311. The boss 330 is located in the center of the main body 311. The boss 330 has, for example, a hollow cylindrical shape. The boss 330 extends along the thickness direction of the main body 311 from the flat surface 311b side to the flat surface 311a side. A lightening hole 360 ​​exists around the boss 330. A pilot hole 332 is provided in the boss 330. The pilot hole 332 opens to a tip surface 331 of the boss 330. An outer bottom surface 333 of the boss 330 is closed and protrudes outward beyond the flat surface 311b of the main body 311. When the seal member 3 is placed in the placement recess 420 of the shield cover 4, the boss 330 is inserted into the through hole 421 of the placement recess 420 from the main surface 430a side. When the boss 330 is inserted into the through-hole 421, the tip surface 331 of the boss 330 is located outside the shield cover 4. In other words, the tip surface 331 is located outside the outer surface of the arrangement recess 420 (in other words, the surface on the main surface 430b side).

[0065] The screw 7 is, for example, a tap screw having a washer head. The threaded portion 7b of the screw 7 is inserted from the main surface 430b side into the pilot hole 332 of the boss 330 inserted into the through hole 412 of the shield cover 4, and is screwed into the boss 330. At this time, the washer 7a of the screw 7 abuts against the tip surface 331 of the boss 330 protruding outward from the shield cover 4, and does not come into contact with the shield cover 4. The diameter of the washer 7a is larger than the diameter of the through hole 421, so that the screw 7 attached to the boss 330 is unlikely to come out of the through hole 421 toward the main surface 430a. In this way, 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.

[0066] In this example, outer bottom surface 333 of boss 330 protrudes outward beyond flat surface 311b of main body 311, which allows for an increase in the thickness of the bottom of boss 330. This makes it difficult for the tip of screw 7 to protrude from outer bottom surface 333 of boss 330, even if screw 7 is screwed too far into boss 330.

[0067] <Example of anti-rotation structure for second seal member> In this example, the outer shape of the seal member 3 in a plan view when viewed from a direction perpendicular to the specific plane is circular. Therefore, when the screw 7 is screwed into the boss 330 of the seal member 3, there is a possibility that the seal member 3 will rotate together with the screw 7.

[0068] Therefore, the seal cover 1 is provided with a rotation prevention structure for the seal member 3. The rotation prevention structure is composed of, for example, the above-mentioned rotation prevention hole 422 provided in the shield cover 4 and a rotation prevention protrusion 10 inserted into the rotation prevention hole 422. The rotation prevention protrusion 10 protrudes outward, for example, from the outer peripheral surfaces of the flange portion 320 and the abutment rib 340 of the seal member 3 along the radial direction of the circular flat surface 311a. The rotation prevention protrusion 10 is, for example, integrally molded with the flange portion 320 and the abutment rib 340. When the seal member 3 is placed in the placement recess 420 of the shield cover 4, the rotation prevention protrusion 10 is inserted into the rotation prevention hole 422 provided in the side portion of the placement recess 420. As a result, when the seal member 3 attempts to rotate together with the screw 7, the rotation prevention protrusion 10 abuts against the inner peripheral wall of the rotation prevention hole 422, making it difficult for the seal member 3 to rotate together with the screw 7.

[0069] <Regarding floating seals> When attached to the shield cover 4, the first seal member 2 is in a floating state, allowing it to move relatively to the shield cover 4. Similarly, when attached to the shield cover 4, the second seal member 3 is in a floating state, allowing it to move relatively to the shield cover 4.

[0070] Fig. 7 is a schematic diagram showing an example of the 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 diagram showing an example of the 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.

[0071] 7, a first clearance C1 (also simply referred to as clearance C1) exists inside the 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, the clearance C1 exists between the inner peripheral wall of the through hole 411 and the outer peripheral surface of the boss 240 inserted into the through hole 411.

[0072] 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, inside the through hole 421 through which the screw 7 is inserted. In this example, clearance C2 exists between the inner peripheral wall of the through hole 421 and the outer peripheral surface of the boss 330 inserted into the through hole 421.

[0073] 7, a third clearance C3 (also simply referred to as clearance C3) exists inside a through hole 415 provided in the bottom of the placement recess 410 of the shield cover 4, that is, inside the through hole 415 through which the restricting protrusion 250 of the seal member 2 is inserted. The restricting protrusion 250 penetrates the shield cover 4 with the third clearance C3 in place. A clearance C3 exists between the inner peripheral wall of the through hole 415 and the outer peripheral surface of the restricting protrusion 250.

[0074] The sealing member 2 is movable relative to the shielding cover 4 along a specific plane (i.e., a plane intersecting the mating direction D1 of the connector 5) according to the clearance C1. In other words, the sealing member 2 is movable relative to the shielding cover 4 along the main surfaces 430a and 430b of the base portion 430 of the shielding cover 4 according to the clearance C1.

[0075] The sealing member 2 is movable in all directions, for example, along a specific plane, centered on the central axis of the through hole 411. For example, the sealing member 2 is movable along the longitudinal direction of the shield cover 4. The sealing member 2 is also movable along a direction that is perpendicular to the longitudinal direction of the shield cover 4 and that is along the specific plane. The sealing member 2 is also movable in other directions along the specific plane.

[0076] Furthermore, the seal member 2 can rotate relative to the shield cover 4 along a specific plane using the boss 240 as a fulcrum, and move relative to the shield cover 4. In other words, the seal member 2 can rotate relative to the shield cover 4 along a specific plane using the screw 6 as a fulcrum, and move relative to the shield cover 4. The movement of the seal member 2 relative to the shield cover 4 along a specific plane also includes the rotation of the seal member 2 relative to the shield cover 4 along the specific plane using the boss 240 and the screw 6 as fulcrums. The seal member 2 can rotate, for example, in both a clockwise and counterclockwise direction using the screw 6 as a fulcrum.

[0077] The restricting protrusion 250 is inserted into the through hole 415 of the shield cover 4, thereby restricting the rotation of the seal member 2 in accordance with the clearance C3. When the seal member 2 rotates relative to the shield cover 4 along a specific plane with the screw 6 as a fulcrum, the restricting protrusion 250 comes into contact with the inner circumferential wall of the through hole 415, restricting the rotation of the seal member 2. The maximum amount of rotation of the seal member 2 is determined by the clearance C3. In this example, the clearance C3 is set to be larger than the clearance C1. Therefore, the maximum amount of movement 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.

[0078] As described above, in this example, the seal member 2 is movable relative to the shield cover 4 along the specific plane. Here, manufacturing errors, assembly errors, etc. may occur in the position of the opening 821 into which the seal portion 210 of the seal member 2 fits. Furthermore, manufacturing errors, assembly errors, etc. may also occur in the relative position of the seal member 2 with respect to the shield cover 4. Because the seal member 2 is movable relative to the shield cover 4 along the specific plane, such errors can be absorbed, making it easier for the seal portion 210 to fit into the opening 821. This improves the workability of fitting the seal portion 210 into the opening 821.

[0079] In this example, one longitudinal end of the seal member 2 is attached to the shield cover 4 by the screw 6. In contrast, at the other longitudinal end of the seal member 2, only the restricting protrusion 250 penetrates the shield cover 4, and the other end is not attached to the shield cover 4. In such a case, when only the shield cover 4 is held between the shield cover 4 and the seal member 2, the seal member 2 may tilt with its one end as a fulcrum so that the other end moves away from the shield cover 4. In other words, the seal member 2 may tilt relative to the shield cover 4 with the screw 6 as a fulcrum. In this case, if the amount of protrusion of the restricting protrusion 250 from the shield cover 4 is small, the restricting protrusion 250 may come out of the through hole 415 and become detached from the shield cover 4.

[0080] In this example, the restricting protrusion 250 protrudes to the outside of the shield cover 4 from an opening 4150 (i.e., the opening on the main surface 430b side of the through-hole 415) provided in the concave surface 4130 on the surface of the shield cover 4. This allows the restricting protrusion 250 to protrude a large amount from the shield cover 4. As a result, even if the seal member 2 tilts relative to the shield cover 4 with the screw 6 as a fulcrum, the restricting protrusion 250 is less likely to come off the shield cover 4.

[0081] 9, for example, the opening 4150 may surround the restricting protrusion 250 closer to the base than the center in the protruding direction (in other words, the base end side or the main body portion 211 side). If 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 having the opening 4150 surround the restricting protrusion 250 closer to the base than the center in the protruding direction, the restricting protrusion 250 hits the shield cover 4 on the base side. This makes the restricting protrusion 250 less likely to break.

[0082] The seal member 3 is movable relative to the shield cover 4 along a specific plane, independently of the seal member 2, according to the clearance C2. Like the seal member 2, the seal member 3 is movable, for example, along the specific plane in all directions around the central axis of the through hole 421. For example, the seal member 3 is movable along the longitudinal direction of the shield cover 4. The seal member 3 is also movable along a direction perpendicular to the longitudinal direction of the shield cover 4 and along the specific plane. The seal member 3 is also movable in other directions along the specific plane. In this example, when the anti-rotation protrusion 10 is inserted into the anti-rotation hole 42, a clearance exists between the inner circumferential wall of the anti-rotation hole 422 and the anti-rotation protrusion 10. Therefore, the seal member 3 is movable along the specific plane in all directions around the central axis of the through hole 421.

[0083] Furthermore, when the seal member 3 is attached to the shield cover 4 with the screw 7, it is possible for the seal member 3 to rotate relative to the shield cover 4 along a specific plane around the boss 330 and the screw 7. This rotation of the seal member 3 is restricted by the anti-rotation structure. When the seal member 3 rotates while attached to the shield cover 4, the anti-rotation protrusion 10 extending from the seal member 3 comes into contact with the inner circumferential wall of the anti-rotation hole 42, restricting the rotation of the seal member 3.

[0084] In this way, in this example, the seal member 3 is movable relative to the shield cover 4 along the specific plane. As with the opening 821, manufacturing errors, assembly errors, etc. may occur in the position of the opening 831 into which the seal portion 310 of the seal member 3 fits. Furthermore, manufacturing errors, assembly errors, etc. may also occur in the relative position of the seal member 3 with respect to the shield cover 4. Because the seal member 3 is movable relative to the shield cover 4 along the 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 fitting the seal portion 310 into the opening 831 is improved.

[0085] <An example of how to attach the seal cover to the object> 10 to 13 are schematic diagrams showing an example of the process of attaching the seal cover 1 to the attachment object 800. 10 to 13 show the cross-sectional structure of the attachment object 800 taken along the arrow AA shown in FIG. 4. FIG. 11 is a schematic diagram showing an example of a state that has progressed from FIG. 10 in the process of attaching the seal cover 1. FIG. 12 is a schematic diagram showing an example of a state that has progressed from FIG. 11 in the process of attaching the seal cover 1. FIG. 13 is a schematic diagram showing an example of a state in which the process of attaching the seal cover 1 has been completed.

[0086] 10 , with the seal members 2 and 3 facing the attachment target 800, a plurality of regulating pins 850 of an attachment portion 870 provided on the attachment target 800 are inserted into a 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 a direction along a 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 attachment target 800.

[0087] 11 , when the seal cover 1 is brought closer to the attachment target 800 with the restriction pin 850 inserted in the through hole 431, the tip of the interlock connector 5 of the seal cover 1 begins to fit into the mating connector 880 of the attachment target 800. At this time, the connector 5 is movable relative to the seal member 2 along a specific plane, making it easier for the worker to fit the connector 5 into the connector 880. Furthermore, the seal member 2 to which the connector 5 is attached is movable relative to the shield cover 4 along a specific plane, making it even easier for the worker to fit the connector 5 into the connector 880.

[0088] In this example, the dimension of the seal member 2 in the direction along the fitting direction D1 of the connector 5 (the dimension in the vertical direction in FIG. 11) 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 restriction pin 850 is inserted into the through hole 431 and the tip of the connector 5 begins to fit into the connector 880. Furthermore, the dimension of the seal member 3 in the direction along the fitting direction D1 is set to a dimension such that the seal portion 310 of the seal member 3 does not fit into the opening 831 of the attachment target 800 when the restriction pin 850 is inserted into the through hole 431 and the tip of the connector 5 begins to fit into the connector 880.

[0089] 12, as the seal cover 1 is brought closer to the attachment object 800 and the fitting of the connector 5 to the connector 880 progresses, the seal portions 210 and 310 begin to fit into the openings 821 and 832, respectively, of the attachment object 800. At this time, because the restriction 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 in which the positions of the connector 5 and the shield cover 4 in the direction along the specific plane are restricted.

[0090] In this example, the connector 5 is movable relative to the seal member 2 along the specific plane, and the seal member 2 is movable relative to the shield cover 4 along the specific plane. This allows the seal member 2 to move along the specific plane independently relative to each of the connector 5 and the shield cover 4. Therefore, as in the example of FIG. 12 , even when the seal portion 210 begins to fit into the opening 821 in a state where the positions of the connector 5 and the shield cover 4 in the direction along the specific plane are restricted, the seal portion 210 can easily fit into the opening 821.

[0091] Furthermore, since the seal member 3 is movable relative to the shield cover 4 along a specific plane, the worker can easily fit the seal portion 310 of the seal member 3 into the opening 831.

[0092] As the seal cover 1 is brought closer to the attachment target 800 and the fitting of the seal portions 210 and 310 with the openings 821 and 831 progresses, the main surface 430a of the base portion 430 of the shield cover 4 comes into contact with the tip surfaces of the bosses 860 of the attachment portion 870 of the attachment target 800, as shown in FIG. 13 . This causes the movement of the seal cover 1 to terminate. When 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 portions 210 and 310 are properly fitted to the openings 821 and 831. In other words, when 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.

[0093] Thereafter, the fixing bolts 11 are inserted into the through holes 432 provided in the shield cover 4, respectively, and screwed into the bosses 860 of the attachment object 800. This fixes the shield cover 4 to the attachment object 800, and the attachment of the seal cover 1 to the attachment object 800 is completed.

[0094] Note that the seal portion 210 may begin to fit into the opening 821 before the connector 5 begins to fit into the connector 880. Even in this case, the seal member 2 is movable relative to the shield cover 4 along the specific plane, so that the seal portion 210 can easily fit into the opening 821.

[0095] As described above, in this example, the sealing members 2 and 3 are attached to one shield cover 4, and therefore the openings 821 and 831 of the attachment object 800 can be sealed by attaching one shield cover 4 to the attachment object 800. This improves the workability of sealing the openings 821 and 831 of the attachment object 800.

[0096] In addition, in this example, the screw 6 that penetrates 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. This makes it easier to see the attachment posture of the seal member 2 relative to the shield cover 4 compared to when the screw 6 is attached to the center of the seal member 2.

[0097] For example, when the seal member 2 is rotated 180 degrees from its original installation position, the position of the through hole 411 of the shield cover 4 does not match the position of the boss 240 of the seal member 2. This makes it easier for the worker to notice that the seal member 2 is not in its original installation position. This improves the ease of installation of the seal member 2 to the shield cover 4. When the connector holding portion 230 is located in the center of the seal member 2 as in this example, it is difficult for the worker to determine whether the seal member 2 is in its original installation position just by checking the position of the connector holding portion 230. Therefore, when the connector holding portion 230 is located in the center of the seal member 2 as in this example, it is effective to install the screw 6 at a position offset from the center of the seal member 2.

[0098] In this example, the restricting protrusion 250 is positioned offset 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 restricting protrusion 250 are positioned on opposite sides of the center of the seal member 2.

[0099] As described above, the seal member 2 can rotate around the screw 6 as a fulcrum along a specific plane. Therefore, if the seal member 2 does not include the restricting protrusion 250, the amount of movement of the portion of the seal member 2 opposite the screw 6 may be excessive. This may make it difficult for the seal portion 210 of the seal member 2 to fit into the opening 821 of the attachment object 800. When the screw 6 and the restricting protrusion 250 are located on opposite sides of the center of the seal member 2, as in this example, it is possible to prevent the amount of movement of the portion of the seal member 2 opposite the screw 6 from being excessive. This makes it easier for the seal portion 210 to fit into the opening 821, improving the ease of attachment of the seal cover 1 to the attachment object 800.

[0100] Furthermore, in this example, the screw 7 is attached to the center of the circular seal member 3, which makes it difficult for the seal member 3 to rotate eccentrically. This makes it easier for the seal portion 310 of the seal member 3 to fit into the opening 831 of the attachment object 800. This improves the workability of attaching the seal cover 1 to the attachment object 800.

[0101] Furthermore, in this example, the dimension of the seal member 2 in the direction along the fitting direction D1 is set so that the seal portion 210 of the seal member 2 does not fit into the opening 821 of the attachment target 800 when the restricting pin 850 is inserted into the through hole 431 and the tip of the connector 5 begins to fit into the connector 880 (see FIG. 11 ). In this case, the seal portion 210 begins to fit into the opening 821 when the positions of the connector 5 and the shield cover 4 in the direction along the specific plane are restricted (see FIG. 12 ). As described above, the seal member 2 is movable relative to each of the connector 5 and the shield cover 4 along the specific plane, and therefore the seal portion 210 of the seal member 2 can easily fit into the opening 821 even when the positions of the connector 5 and the shield cover 4 in the direction along the specific plane are restricted.

[0102] Note that the connector 5 does not have to be able to move relative to the seal member 2. The positions of the screw 6 and the restricting protrusion 250 may be interchanged. That is, the screw 6 may be located closer to the seal member 3 than the center of the seal member 2, and the restricting protrusion 250 may be located on the opposite side of the screw 6 than the center of the seal member 2.

[0103] 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. In other words, the boss 240 does not have to be present inside the through hole 411. In this case, the space between the inner circumferential wall of the through hole 411 and the outer circumferential surface of the threaded portion 6b of the screw 6 inserted into the through hole 411 forms the first clearance C1. In other words, the screw 6 penetrates the shield cover 4 with the first clearance C1 present.

[0104] Similarly, the boss 330 to which the screw 7 is attached does not have to reach the through hole 421. In other words, the boss 330 does not have to be present inside the through hole 421. In this case, the space between the inner circumferential wall of the through hole 421 and the outer circumferential surface of the threaded portion 7b of the screw 7 inserted into the through hole 421 forms the second clearance C2. In other words, the screw 7 penetrates the shield cover 4 with the second clearance C2 present.

[0105] As described above, the seal cover and the object to which the seal cover is attached have been described in detail, but the above description is merely an example in all respects and this disclosure is not limited thereto. Furthermore, the various modifications described above can be combined and applied as long as they are not mutually contradictory. It is understood that countless modifications not exemplified can be envisioned without departing from the scope of this disclosure. [Explanation of symbols]

[0106] 1 Seal cover 2 First sealing member 3 Second sealing 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 Holding part 51a Engagement hole 210 First seal part 211,311 Main body 211a,311a plane 211b,311b plane 212,312 Seal ring 220,320 Flange 230 Connector holding part 231 Slide support 231a Guide groove 232 Rear receiving part 233 Anti-slip structure 233a Engaging protrusion 240,330,860 Boss 241,331 Tip surface 242,332 pilot holes 243,333 Outer bottom 250 Regulatory protrusion 260, 270, 340 Contact rib 280, 281, 360 Hollowed-out section 310 Second seal part 410 First placement recess 411,412,415,421,431,432 Through holes 413 Dish-shaped recess 420 Second placement recess 422 Anti-rotation hole 430,810 Base 430a,430b,810a,810b Main surface 800 Mounting target 820 1st cylinder part 821 First Opening 830 Second tube part 831 Second Opening 850 Regulatory Pin 870 Mounting part 880 Mating Connector 4130 Concave 4150 Aperture C1 First Clearance C2 Second Clearance C3 Third Clearance D1 Mating direction D2 Slide movement direction

Claims

1. A seal cover attached to an attachment target having a first opening and a second opening aligned with the first opening, the seal cover covering the first opening and the second opening, a first seal member having a first seal portion that fits into the first opening to seal the first opening; a second seal member arranged next to the first seal member, the second seal member having a second seal portion fitted into the second opening to seal the second opening; a shield cover to which the first seal member and the second seal member are attached and which is fixed to the attachment object, the shield cover having a first through hole and a second through hole; a first screw that is inserted into the first through hole of the shield cover and attached to the first seal member; a second screw that is inserted into the second through hole of the shield cover and attached to the second seal member; Equipped with the first screw is attached at a position shifted from the center of the first seal member to one side in an arrangement direction of the first seal member and the second seal member, the first seal member has a protrusion that penetrates the shield cover with a first clearance and restricts rotation of the first seal member; the protrusion is positioned offset from the center of the first seal member to the other side in the arrangement direction, The protrusion protrudes outward from an opening provided in a concave surface of the surface of the shield cover.

2. The seal cover according to claim 1, The opening surrounds a portion of the seal cover closer to the base than the center in the protruding direction of the protruding portion.

3. The seal cover according to claim 1 or 2, an interlock connector attached to the first seal member to ensure attachment of the seal cover to the attachment target; a second clearance exists inside the first through hole; the attachment target has a mating connector that mates with the interlock connector, A seal cover in which, when a plane intersecting the mating direction of the interlock connector with the mating connector is defined as one plane, the first seal member is movable relative to the shield cover along the one plane in accordance with the first clearance.

4. The seal cover according to any one of claims 1 to 3, an interlock connector attached to the first seal member to ensure attachment of the seal cover to the attachment target; 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, The seal cover is attached at a position shifted from the center of the first seal member to one side in the arrangement direction.

5. The seal cover according to claim 4, the first seal member has a holding portion that holds the interlock connector, The holding portion is located in a central portion of the first seal cover.

6. The seal cover according to any one of claims 1 to 5, the second screw is attached to the center of the second seal member, A seal cover having a rotation prevention structure for the second seal member.

7. The seal cover according to any one of claims 1 to 6, an interlock connector attached to the first seal member to ensure attachment of the seal cover to the attachment target; the attachment target has a mating connector that mates with the interlock connector, When a plane intersecting a mating direction of the interlock connector with the mating connector is defined as one plane, the attachment target has a regulating pin that protrudes in a direction opposite to the mating direction and 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 movable relative to the first seal member along the one plane; the shield cover has a third through hole through which the restriction pin is inserted, A seal cover in which the dimensions of the first seal member in the direction along the mating direction are set to dimensions 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 begins to fit into the mating connector.

Images