阅读说明：本技术 带互锁连接器的罩 (Cover with interlocking connector ) 是由 桧田健史郎 于 2018-03-27 设计创作，主要内容包括：带互锁连接器的罩(1)具有罩主体(10)和互锁连接器(20)。罩主体(10)构成为覆盖设于电力转换装置(100)的壳体(101)的开口部(102),并且具有导电性。互锁连接器(20)构成为能和设于壳体(101)的内部的待接连接器(103)电连接。在罩主体(10)与互锁连接器(20)之间形成有噪声屏蔽层(30)和低导电层(40)。噪声屏蔽层(30)具有导电性。低导电层(40)位于比噪声屏蔽层(30)靠近罩主体(10)侧的位置,并且与罩主体(10)和噪声屏蔽层(30)相比导电性更低。(A cover (1) with an interlock connector has a cover main body (10) and an interlock connector (20). The cover body (10) is configured to cover an opening (102) provided in a case (101) of a power conversion device (100), and has conductivity. The interlock connector (20) is configured to be electrically connectable to a connector (103) to be connected provided inside the housing (101). A noise shielding layer (30) and a low conductive layer (40) are formed between the cover main body (10) and the interlock connector (20). The noise shielding layer (30) has conductivity. The low conductive layer (40) is located closer to the cover main body (10) side than the noise shielding layer (30), and has lower conductivity than the cover main body (10) and the noise shielding layer (30).)

1. A cover with interlocking connectors, comprising:

a cover main body (10) that is configured to cover an opening (102) provided in a case (101) of a power conversion device (100) and that has conductivity; and

an interlock connector (20) configured to be electrically connectable with a connector to be connected (103) provided inside the housing,

a noise shielding plate (30) is disposed between the cover main body and the interlock connector, the noise shielding plate having conductivity,

the noise shielding plate is formed separately from the cover main body.

2. The cover with interlocking connectors of claim 1,

the noise shielding plate has a connecting portion (31) connected to the cover main body and a separating portion (32) separated from the cover main body.

3. The cover with interlocking connectors of claim 2,

a space (41) is formed between the divided portion and the cover main body by the divided portion.

4. The cover with interlocking connectors of claim 2 or 3,

the connecting portions are deformed integrally with each other in a state of being overlapped with the cover main body and are caulked and joined to each other.

5. The cover with interlocking connector of any one of claims 1 to 3,

the interlock connector is mounted to the cover main body via the noise shield plate in a state in which at least a part of the noise shield plate is molded, and a part (42) of the interlock connector is located between the noise shield plate and the cover main body.

6. The cover with interlocking connectors of claim 5,

the cover main body has a cover concave portion (14) formed in a concave shape on a side opposite to the opening portion,

the noise shielding plate is constituted by a plate-like member covering at least a part of the cover recess,

a portion (42) of the interlocking connector is located inside the shroud recess.

7. The cover with interlocking connectors of claim 6,

at least a part (14b) of the inner side surface of the cover recess is not parallel to the noise shielding plate.

8. The cover with interlocking connectors of claim 5,

the interlock connector includes a connector main body (21) configured to be electrically connectable with the connector to be connected, and a connector holding portion (22) that holds the connector main body and molds at least a part of the noise shielding plate.

9. The cover with interlocking connectors of claim 8,

the connector main body is movably held by the connector holding portion in a state of being fitted with a gap.

Technical Field

The invention relates to a cover with interlocking connectors.

Background

Conventionally, in order to facilitate a fastening operation of fastening a bolt to a terminal portion through which a high-voltage current flows, an opening portion is provided in a case of a power conversion device, and the opening portion is covered with a cover after the fastening operation or the like is completed, thereby preventing intrusion of foreign matter. Further, an interlock mechanism is employed as a mechanism for detecting the open/close state of the cover. The interlock mechanism is constituted by an interlock connector provided in the cover and a to-be-connected connector provided in the housing, the two connectors being electrically connected in a cover closed state, and the two connectors being separated from each other without being electrically connected in a cover open state. Patent document 1 discloses a structure of a power conversion device including the above-described interlock mechanism. In the structure disclosed in patent document 1, the interlock connector is mounted to the inner side surface of the cover in a movable state, and the interlock connector is reliably connected to the connector to be connected when the cover is closed.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2012-248415

Disclosure of Invention

In the structure disclosed in patent document 1, since the interlock connector is attached to the cover in order to detect the open/close state of the cover, the interlock connector is easily affected by external noise in the power conversion device. Therefore, in the interlock mechanism that detects the electrical connection state of the interlock connector and the connector to be connected, there is a possibility that the open-close state is erroneously detected due to external noise. To suppress this false detection, it is considered to reduce noise reaching the interlock connector by increasing the thickness of the cover having conductivity and internally attenuating extraneous noise while passing through the cover. However, even if the thickness of the cover is simply increased, the internal attenuation effect against low-frequency noise is small, and therefore, the noise reaching the interlock connector cannot be sufficiently reduced, and the problem of an increase in size of the apparatus also arises. In addition, when the power conversion device is mounted on a vehicle, low-frequency noise is likely to be generated from other devices in the vehicle, and therefore the above problem is further significant.

The present invention has been made in view of the above-described background, and provides a cover with an interlock connector that can prevent erroneous detection of an open/close state and realize miniaturization.

A cover with an interlock connector according to a first aspect of the present invention includes a cover main body configured to cover an opening portion provided in a housing of a power conversion device and to have conductivity, and an interlock connector configured to be electrically connectable to a connector to be connected provided inside the housing, wherein a noise shielding layer and a low conductive layer are formed between the cover main body and the interlock connector, respectively, the noise shielding layer having conductivity, and the low conductive layer being located closer to the cover main body than the noise shielding layer and having lower conductivity than the cover main body and the noise shielding layer.

Effects of the invention

In the cover with the interlock connector, a noise shielding layer having conductivity and a low conductive layer having lower conductivity than the cover main body and the noise shielding layer are formed between the cover main body and the interlock connector, respectively. Thus, by the synergistic effect of the internal attenuation at the time of passing through the cover main body, the noise shielding layer, and the reflection generated between the noise shielding layer and the cover main body in the low conductive layer, it is possible to prevent external noise from reaching the interlock connector, thereby improving noise resistance. Erroneous detection of the open/close state of the cover is prevented. Further, since it is not necessary to excessively increase the thickness of the cover main body, the above-described cover with the interlock connector can be downsized. Also, even in the case where the extraneous noise contains much low-frequency noise, the extraneous noise can be prevented from reaching the interlock connector by reflection in the low conductive layer. Therefore, even in a vehicle with a lot of low-frequency noise, erroneous detection of the open/close state of the cover with the interlock connector can be prevented, and the cover with the interlock connector can be miniaturized.

As described above, according to the present invention, it is possible to provide a cover with an interlock connector which prevents erroneous detection of an open/close state of the cover and realizes miniaturization.

In the claims, the parenthesized reference signs indicate correspondence with specific elements described in the embodiments described below, and do not limit the technical scope of the present invention.

Drawings

The above objects, other objects, features and advantages of the present invention will become more apparent with reference to the accompanying drawings and the following detailed description. The drawings are as follows.

Fig. 1 is a perspective view of a cover with an interlocking connector according to a first embodiment.

Fig. 2 is a sectional view taken along line II-II of fig. 1.

Fig. 3 is a sectional view taken along line III-III of fig. 1.

Fig. 4 is a schematic view showing a mounted state of a cover with an interlock connector in the first embodiment.

Fig. 5 is an enlarged rear view of a cover with an interlocking connector in accordance with a first embodiment.

Fig. 6 is a schematic diagram illustrating a use mode of the first embodiment.

Fig. 7 is a sectional view taken along line III-III of fig. 1 in a first modification.

Fig. 8 is a sectional view of fig. 1 taken along line III-III in a second modification.

Detailed Description

(embodiment I)

An embodiment of the cover with the interlock connector described above will be described with reference to fig. 1 to 6. As shown in fig. 1, the cover with interlock connector 1 of the present embodiment has a cover main body 10 and an interlock connector 20.

As shown in fig. 4, the cover main body 10 is configured to cover an opening 102 provided in a case 101 of the power converter 100 and to have conductivity.

The interlock connector 20 is configured to be electrically connectable with a connector to be connected 103 provided inside the housing 101.

Also, a noise shielding layer 30 and a low conductive layer 40 are formed between the cover main body 10 and the interlock connector 20. The noise shielding layer 30 has conductivity. The low conductive layer 40 is located closer to the cover main body 10 side than the noise shielding layer 30, and is lower in conductivity than the cover main body 10 and the noise shielding layer 30.

The cover 1 with the interlock connector of the present embodiment will be described in detail below.

As shown in fig. 4, the cover with interlock connector 1 is mounted to the housing 101 of the power conversion apparatus 100. An opening 102 is formed in the case 101, and a bolt fastening operation can be performed to the high-voltage terminal block 105 of the power conversion device 100 through the opening 102. The cover 1 with the interlock connector has a shape that is larger than the outer shape of the opening 102 by one turn, and is detachably attached to the housing 101 so as to close the opening 102.

As shown in fig. 1, the cover main body 10 is a plate-shaped member made of metal, and has conductivity. In view of the required internal noise attenuation effect and formability, the thickness of the cover main body 10 may be set to, for example, 0.5mm to 3.0mm, preferably 0.5mm to 1.0mm, and in the present embodiment, 0.5 mm. Fastening holes 11 for attachment to the case 101 are provided at four locations on the outer edge of the cover main body 10. A groove 13 into which the washer 12 is fitted is formed on the inner side of the fastening hole 11. As shown in fig. 4, the gasket 12 is configured to abut against the side surface 101a of the housing 101 and seal the space between the cover main body 10 and the side surface 101 a. A cover concave portion 14 is formed in the cover main body 10, and the cover concave portion 14 is formed in a concave shape on a side opposite to the opening portion 102.

As shown in fig. 1, the noise shielding layer 30 is constituted by a long plate-like member made of metal, and has conductivity. The thickness of the noise shielding layer 30 is not particularly limited, but in view of the required internal attenuation effect of noise and the formability, the thickness of the noise shielding layer 30 may be set to, for example, 0.5mm to 3.0mm, preferably 0.5mm to 1.0mm, and in the present embodiment to 1.0 mm. The noise shielding layer 30 is provided so as to cover a part of the cover concave portion 14 on the side of the cover main body 10 opposite to the opening portion 102. The noise shielding layer 30 has connecting portions 31 at both ends in the longitudinal direction, which are in contact with the cover main body 10 and electrically connected to each other. As shown in fig. 3, the connection portion 31 is deformed integrally with the cover main body 10 in a state of being overlapped with each other and is caulked to each other. In the present embodiment, a mechanical caulking, trokes caulking, is used as the caulking joint. This caulking joint forms the connecting portion 31 and the cover main body 10 into a protruding portion 15 protruding to the outside of the case 101. The central region in the longitudinal direction of the noise shielding layer 30 constitutes a dividing portion 32 that is divided from the inner side surface 14a of the cover recess 14. A low conductive layer 40 is formed between the dividing portion 32 and the inner side surface 14 a.

As shown in fig. 3, a connector holding portion 22, which will be described later, is provided in a central region in the longitudinal direction of the noise shielding layer 30. The connector holding portion 22 is a resin member having insulation properties, and is insert-molded so that a central region in the longitudinal direction of the noise shielding layer 30 is molded. The connector holding portion 22 includes: a slit portion 221 formed in a slit shape such that an engagement rib 211 provided on a connector body 21 described later is engaged with the slit portion 221; a first projection 223, as shown in fig. 2, projecting so as to face a vertical surface 212a of an engagement claw 212 provided on a connector body 21 described later; and a second protrusion 224, the second protrusion 224 protruding so as to face the first side surface 27, the first side surface 27 being located on the opposite side of the connector body 21 from the vertical surface 212 a.

As shown in fig. 2 and 3, the low conductive layer 40 is formed between the cover main body 10 and the noise shielding layer 30. The low conductive layer 40 is lower in conductivity than the cover main body 10 and the noise shielding layer 30, and for example, the low conductive layer 40 may be composed of the following layers: an air layer formed by a space, a layer made of an insulating material, a layer made of a material having lower conductivity than the material forming the cover main body 10 and the noise shielding layer 30, or a combination thereof. In the present embodiment, the low-conductive layer 40 is composed of a space portion 41 and a raised portion 42, the space portion 41 is located between the cover main body 10 and the connector holding portion 22, and the raised portion 42 is raised to a side closer to the cover main body 10 than the noise shielding layer 30 in the connector holding portion 22 and is located inside the cover concave portion 14. Further, the space portion 41 and the ridge portion 42 are lower in conductivity than the cover main body 10 and the noise shielding layer 30 made of metal having conductivity.

As shown in fig. 2 and 3, in the present embodiment, the noise shielding layer 30 covers a part of the cover recess 14 but does not cover the entire part. Therefore, as shown in fig. 2, the cover 1 with the interlock connector has a communicating portion 43 that communicates the space portion 41 and the inside of the housing 101. In the present embodiment, the outer edge 14b of the inner surface 14a of the cover recess 14 is inclined with respect to the noise shielding layer 30, and the outer edge 14b is not parallel to the noise shielding layer 30.

As shown in fig. 1 to 4, the interlock connector 20 is composed of a connector main body 21 and a connector holding portion 22. In the interlock connector 20, a connector main body 21 is detachably held by a connector holding portion 22. As shown in fig. 4, the connector main body 21 is configured to be electrically connectable with the connector 103 to be connected. As shown in fig. 2 and 3, the connector body 21 includes an engagement rib 211, an engagement claw 212, and a connection hole 213. The connector main body 21 is made of resin and has insulation properties. The engagement rib 211 is provided at one end of the connector body 21 and engages with the slit portion 221 of the connector holding portion 22 as described above. The engagement claw 212 is formed at a position facing the connector holding portion 22 in the connector body 21 and is movable in a direction away from the connector holding portion 22. The engagement claw 212 has a vertical surface 212a and an inclined surface 212b, the vertical surface 212a being parallel to each other in a direction away from the connector holding portion 22, and the inclined surface 212b being inclined in a direction away from the connector holding portion 22 at a position opposite to the vertical surface 212 a. The connection hole 213 is provided at the other end of the connector main body 21, and is configured to allow the insertion of the connection pin 104 of the connector 103 to be connected provided in the housing 101. As shown in fig. 5, when viewed from the lamination direction of the cover main body 10 and the noise shielding layer 30, the connection hole 213 is located at a position overlapping the noise shielding layer 30.

When the connector main body 21 is attached to the connector holding portion 22, the engagement rib 211 is inserted into the slit portion 221 as shown in fig. 3, and the inclined surface 212b of the engagement claw 212 slides in contact with the first projection portion 223 and rides over the first projection portion 223 as shown in fig. 2. Accordingly, the vertical surface 212a of the engagement claw 212 faces the first projection 223 of the connector holding portion 22, and the first side surface 27 of the connector body 21 faces the second projection 224 of the connector holding portion 22. Gaps are provided between the vertical surface 212a and the first projecting portion 223 and between the first side surface 27 and the second projecting portion 224, respectively. As shown in fig. 3, gaps are provided between the inner surfaces 222 of the slit portions 221 and the engagement ribs 211, and between the second side surface 28 and the third side surface 29 of the connector body 21 and the opposing surface 225 of the slit portion 221 that opposes the second side surface 28 and the third side surface 29, respectively. Thus, in the interlock connector 20, the connector body 21 is loosely fitted to the connector holding portion 22, and is configured to be movable in the plane direction of the cover body 10. In the present embodiment, as shown in fig. 5, the range in which the connector body 21 is allowed to move is a range in which the connection hole 213 always overlaps the noise shielding layer 30 when viewed from the stacking direction of the cover body 10 and the noise shielding layer 30.

Inside the connector main body 21, there are connection terminals, not shown, which are electrically connected to the connection pins 104 shown in fig. 4 inserted through the connection holes 213. By the electrical connection of the connection terminal and the connection pin 104, it can be detected that the cover 1 with the interlock connector is mounted to the opening portion 102 of the housing 101.

Next, the operational effects of the cover with interlock connector 1 of the present embodiment will be described in detail.

According to the cover with interlock connector 1 of the present embodiment, the noise shielding layer 30 and the low conductive layer 40 having conductivity are respectively formed between the cover main body 10 and the interlock connector 20, and the low conductive layer 40 is located closer to the cover main body 10 side than the noise shielding layer 30 and has lower conductivity than the cover main body 10 and the noise shielding layer 30. Thereby, as shown in fig. 6, the external noises N1, N2, N3, N4 can be prevented from reaching the interlock connector 20 by a synergistic effect of the internal attenuation S when passing through the cover main body 10, the noise shielding layer 30, and the reflection R generated between the noise shielding layer 30 and the cover main body 10 in the low conductive layer 40. As a result, noise resistance is improved and erroneous detection of the open/close state of the cover 1 with the interlock connector is prevented. Further, since it is not necessary to excessively increase the thickness of the cover main body 10, the cover 1 with the interlock connector can be downsized. In addition, in the present embodiment, since the cover is installed in a vehicle with a large amount of low-frequency noise, the low-conductive layer 40 reflects the low-conductive layer to effectively prevent the external noise from reaching the interlock connector 20, thereby preventing erroneous detection of the open/closed state of the interlock connector-equipped cover 1.

In the present embodiment, the noise shielding layer 30 includes the connection portion 31 and the separation portion 32, the connection portion 31 is connected to the cover main body 10, and the separation portion 32 is separated from the cover main body 10 in order to provide the low conductive layer 40. This allows external noise to be reflected between the dividing portion 32 and the cover body 10, and to propagate to the cover body 10 through the connecting portion 31 while being internally attenuated by the noise shielding layer 30. Therefore, external noise can be further prevented from reaching the interlock connector 20.

In the present embodiment, at least a part of the low conductive layer 40 is formed by the space 41, and the space 41 is formed between the dividing portion 32 and the cover main body 10. This enables the low-conductive layer 40 to be formed with a simple structure, and thus can reduce manufacturing cost and improve assembly workability.

In the present embodiment, the connection portion 31 is deformed integrally with the cover main body 10 in a state of being overlapped with the cover main body, and is caulked to each other. This enables the noise shielding layer 30 to be firmly fixed to the cover main body 10 with a simple structure. Further, the protruding portion 15 protruding to the outside of the case 101 can be formed in the cover main body 10 and the noise shielding layer 30, and the surface area of the cover main body 10 and the noise shielding layer 30 can be increased. As a result, reflection of extraneous noise can be promoted, and noise immunity can be improved. Further, by the above caulking, it is not necessary to provide a through hole in the cover main body 10 in the region inside the gasket 12, and therefore, the sealing property between the cover 1 with the interlock connector and the housing 101 can be maintained. Further, as a method of connecting the connection portion 31 and the cover main body 10, it is also conceivable to use spot welding, but in this case, there is a possibility that plating provided to the cover main body 10 is peeled off. On the other hand, since the caulking joint is performed in the present embodiment, there is no fear of plating peeling.

In the present embodiment, the projecting portion 15 projecting outward of the housing 101 is formed at the caulking joint of the connecting portion 31, but in addition to this, a projecting portion projecting inward of the housing 101 may be formed. In this case, the same operational effects as those of the present embodiment are also obtained.

In the present embodiment, the cover 1 with the interlock connector has the communicating portion 43 that communicates the low conductive layer 40 and the inside of the housing 101. As a result, as shown in fig. 6, the external noises N3 and N4 reaching the low conductive layer 40 can be released from the low conductive layer 40 via the communication portion 43, and the external noises N3 and N4 can be prevented from staying in the low conductive layer 40.

Further, in the present embodiment, the interlock connector 20 is attached to the cover main body 10 via the noise shielding layer 30 in a state in which at least a part of the noise shielding layer 30 is molded, and the ridge portion 42 that is a part of the interlock connector 20 is located between the noise shielding layer 30 and the cover main body 10 and forms at least a part of the low conductive layer 40. Thus, since the bump 42 which is a part of the interlock connector 20 can be used as the low conductive layer 40, the low conductive layer 40 can be secured and the size can be reduced. In the present embodiment, the low conductive layer 40 is formed of the bump portions 42 and the space portions 41, but in addition to this, the low conductive layer 40 may be formed of the bump portions 42 alone without providing the space portions 41.

In the present embodiment, the cover main body 10 has a cover concave portion 14, and the cover concave portion 14 is formed in a concave shape on the side opposite to the opening portion 102. The noise shielding layer 30 is formed of a plate-like member covering at least a part of the cover recess 14, the low conductive layer 40 is formed between the noise shielding layer 30 and the inner side surface 14a of the cover recess 14, and the ridge portion 42 which is a part of the interlock connector 20 is located inside the cover recess 14. This allows the cover main body 10 to be provided with a relief space for providing the raised portion 42. Therefore, the low conductive layer 40 can be secured and miniaturization can be achieved. Further, since the noise shielding layer 30 can be connected to the cover main body 10 without bending the plate-like member forming the noise shielding layer 30 molded with the interlock connector 20, the mounting position accuracy of the interlock connector 20 can be improved.

In the present embodiment, the outer edge 14b, which is at least a part of the inner surface of the cover recess 14, is not parallel to the noise shielding layer 30. Thus, as shown in fig. 6, the reflection directions of the external noises N3, N4 in the low conductive layer 40 formed between the noise shielding layer 30 and the inner side surface 14a of the cover recess 14 can be easily dispersed, and the external noises N3, N4 can be made difficult to reach the interlock connector 20.

In the present embodiment, the region excluding the outer edge 14b in the inner surface 14a of the cover recess 14 is parallel to the noise shielding layer 30, but the region excluding the outer edge 14b in the inner surface 14a may be not parallel to the noise shielding layer 30. In this case, the reflection direction of the extraneous noise in the low conductive layer 40 formed between the noise shielding layer 30 and the inner side surface 14a of the cover recess 14 can be made more easily dispersed, thereby further making it difficult for the extraneous noise to reach the interlock connector 20.

Further, in the present embodiment, the interlock connector 20 includes a connector main body 21 and a connector holding portion 22, wherein the connector main body 21 is configured to be electrically connectable with the connector 103 to be connected, the connector holding portion 22 holds the connector main body 21 and molds at least a part of the noise shielding layer 30, and a portion of the connector holding portion 22, i.e., the ridge portion 42, forms at least a part of the low-conductive layer 40. The connector main body 21 and the connector holding portion 22 molded with a part of the noise shielding layer 30 are formed as separate bodies and are therefore constituted by two members, but the connector holding portion 22 can be attached to the cover main body 10 only by attaching the noise shielding layer 30 to the cover main body 10, and therefore, the assembling workability can be improved. Further, since the connector body 21 can be replaced separately, it is advantageous in terms of cost. Further, since the bump portion 42 which is a part of the connector holding portion 22 can be used as the low conductive layer 40, it contributes to downsizing of the cover 1 with the interlock connector.

In the present embodiment, the connector main body 21 is movably held by the connector holding portion 22 in a state of being fitted with a gap. Thereby, when the cover 1 with the interlock connector is mounted to the housing 101, positional displacement at the time of mounting, positional displacement due to shape tolerance of each member can be absorbed, and the interlock connector 20 can be reliably connected to the connector to be connected 103. This can further prevent erroneous detection of the open/close state of the cover 1 with the interlock connector.

In the present embodiment, the range in which the movement of the connector body 21 is allowed is a range in which the connection hole 213 always overlaps the noise shielding layer 30 when viewed from the stacking direction of the cover body 10 and the noise shielding layer 30. Thus, even if the connector main body 21 is located at a deviated position, the noise shielding layer 30, the internal attenuation of the cover main body 10, and the synergistic effect of the reflection of the low conductive layer 40 suppress the external noise from reaching the connection hole 213 of the interlock connector 20, thereby further preventing the erroneous detection of the open/closed state of the interlock connector-equipped cover 1.

In the present embodiment, the connector holding portion 22 is attached to the cover main body 10 via the noise shielding layer 30 in a state in which at least a part of the noise shielding layer 30 is molded. Thus, the connector holding portion 22 can be attached to the cover body 10 only by attaching the noise shielding layer 30 to the cover body 10, and therefore, the assembly workability can be improved and the number of components can be reduced.

In the present embodiment, although one noise shielding layer 30 is provided, a plurality of noise shielding layers 30 may be stacked and composed of two or more layers. In this case, the low conductive layers 40 having a lower conductivity than the noise shielding layers 30 are formed by separating the noise shielding layers 30 from each other. Thereby, the arrival of the extraneous noise to the interlock connector 20 can be further suppressed by the reflection of the extraneous noise in the plurality of low conductive layers 40 and the internal attenuation when passing through the plurality of noise shielding layers 30.

In the present embodiment, a plate-shaped member made of metal is used as the noise shielding layer 30, but the present invention is not limited thereto, and may be made of a conductive material, glass wool, a metal porous body, or the like. When glass wool or a metal porous body is used as the noise shielding layer 30, reflection of external noise in the noise shielding layer 30 can be expected, and a low-frequency noise blocking effect can be expected.

In the present embodiment, the cover main body 10 is provided with the cover concave portion 14, but in the first modification, as shown in fig. 7, the cover main body 10 may be formed in a flat plate shape, and a plate-shaped member forming the noise shielding layer 30 may be bent to form a shielding plate concave portion 140 having a concave shape with respect to the cover main body 10. In the first modification, low conductive layer 40 including space 41 and raised portion 42 is formed between cover main body 10 and noise shielding layer 30 by shield plate recess 140. In the first modification, the same operational effects as those of the present embodiment are obtained except for the operational effects of providing the cover concave portion 14 in the cover main body 10.

In the present embodiment, in the cover 1 with the interlock connector, the interlock connector 20 is constituted by the connector main body 21 and the connector holding portion 22, and the connector main body 21 is movably fitted to the connector holding portion 22 with play. In addition, as shown in a second modification shown in fig. 8, the interlock connector 20 may be configured without the connector holding portion 22, and the noise shielding layer 30 may be directly molded with the connector body 21. In this case, the connector to be connected 103 (refer to fig. 4) may be made movable. In the second modification, the same operational effects are exhibited except for the operational effects produced by the interlocking connector 20 being constituted by the connector main body 21 and the connector holding portion 22 in the present embodiment.

In the present embodiment, the cover 1 with the interlock connector is configured to cover the opening 102 formed in the case 101 so as to enable the bolt fastening operation to the high-voltage terminal block 105 provided in the power conversion device 100, but is not limited to this, and may be configured to cover another opening in the case 101 that requires detection of the open/closed state.

As described above, according to the present embodiment, it is possible to provide the cover with the interlock connector 1 which can prevent erroneous detection of the open/close state and realize miniaturization.

The present invention is not limited to the above embodiments and modifications, and can be applied to various embodiments without departing from the scope of the present invention.

Although the present invention has been described in terms of the embodiments, it should be understood that the present invention is not limited to the embodiments and configurations. The present invention also includes various modifications and modifications within an equivalent range. In addition, various combinations and modes, and other combinations and modes including only one element, one or more elements, and one or less elements also belong to the scope and the idea of the present invention.