JP2020096429A - Cover structure for electric connection portion - Google Patents

Abstract

To suppress detachment of a cover member from a housing.SOLUTION: A cover structure comprises: a housing 10 to which a first housing member 11 and a second housing member 12 are assembled, with an opening 10a provided in the second housing member; a cover member 20 blocking the opening; a hinge structure 30 that rotatably supports the cover member relative to the second member by rotatably engaging a first engagement body 31 of the second housing member and a second engagement body 32 of the cover member; and an engagement structure 40 for maintaining the supporting state. One of the first engagement body and the second engagement body is formed as a rotary shaft, and the other one is formed as a bearing that rotatably supports a shank 32a of the rotary shaft inserted along an axial direction. The engagement structure comprises a first engagement body 41 and a second engagement body 42 that nip and engage the second engagement body while leaving it in a rotatable state from one side and the other side in the axial direction when assembly of the first housing member with the second housing member is complete.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cover structure for electrical connection points.

2. Description of the Related Art Conventionally, various electric connection objects are mounted on vehicles such as automobiles, and a housing having an electric connection point related to the electric connection objects is provided inside. In the case, when work related to an electrical connection location (attachment/detachment of an electrical connection target, etc.) is required, an opening is formed so that the work can be performed. Therefore, the housing is provided with a cover that closes the opening. For example, this type of housing is disclosed in Patent Document 1 below.

JP, 2008-113534, A

By the way, the cover may be molded integrally with the housing together with the living hinge or the like, or may be molded as a component (cover member) separate from the housing and assembled to the housing via the hinge structure. In some cases. In the latter case, the hinge structure is configured to be pivotable between an open position and a closed position relative to the opening of the cover member. Therefore, it is desirable that the hinge structure is configured so that the cover member does not separate from the housing at any place between the open position and the closed position.

Therefore, the present invention provides a cover structure of an electrical connection portion capable of suppressing detachment of the cover member from the housing regardless of the position of the cover member with respect to the housing. To that end.

To achieve the above object, the present invention includes a first housing member and a second housing member, and an electric space is provided in an inner space formed by assembling the first housing member and the second housing member. A casing having a connection portion and provided with an opening portion in the second casing member that can perform a work related to the electrical connection portion, a cover member that closes the opening portion, and the second casing member A first engagement body provided on the cover member and a second engagement body provided on the cover member, and by rotatably engaging the first engagement body and the second engagement body, an open position with respect to the opening is provided. A hinge structure that rotatably supports the cover member with respect to the second housing member between a closed position, and a rotation between the second housing member and the cover member by the hinge structure. An engaging structure that maintains a movable support state, one of the first engaging body and the second engaging body is formed as a rotation shaft, and the first engaging body and the second engaging body are provided. The other of the engaging bodies is formed as a bearing that rotatably supports the shaft portion of the rotating shaft that is inserted along the axial direction, and the locking structure is the first housing member. A first locking body that holds and locks the second engagement body in a rotatable state from one side and the other side in the axial direction when the assembly with the second housing member is completed. And a second locking body.

Here, the first locking body is provided on the second housing member as a means that can lock the second engaging body from the one side in the axial direction, and the second locking body is the first locking body. When the assembly of the one housing member and the second housing member is completed, the one housing member and the second engaging member are arranged so as to face each other on the other side in the axial direction. It is desirable to do.

Further, it is desirable that the second locking body is provided on the first housing member.

In addition, the second locking body is formed as a projecting body that is projected from the first housing member, and the second housing member is the second housing member at the assembly completion position with the first housing member. It is desirable to have a through hole through which the locking body is inserted.

Further, in the locking structure, when the first engaging body is formed as the bearing and the second engaging body is formed as the rotating shaft, the bearing serves as the first locking body. It is desirable to use.

Further, the rotating shaft has a protruding portion that protrudes outward in the radial direction from the outer peripheral surface of the shaft portion on the other side in the axial direction with respect to the bearing, and the second locking body is It is desirable that the other side in the axial direction is disposed so as to face the protrusion and that the shaft is rotatably fitted.

In the cover structure of the electrical connection portion according to the present invention, when the first housing member and the second housing member are completely assembled, the first engaging body is axially aligned with the second engaging body. And the second locking body is arranged opposite to the other side in the axial direction. Therefore, as long as the first housing member and the second housing member remain in the assembled state, the second engaging body remains rotatable from both end sides in the axial direction. Since it is sandwiched between the first engaging body and the second engaging body, even if the first engaging body is moved relative to the first engaging body in the axial direction, the first engaging body or the first engaging body or the second engaging body is not separated from the first engaging body. 2 It is locked by the locking body. The locking structure can exhibit a lockable state with respect to the second engaging body regardless of the position of the cover member with respect to the second housing member. Therefore, the cover structure of this electrical connection portion can prevent unintentional detachment of the cover member from the housing regardless of the position of the cover member with respect to the housing.

FIG. 1 is a perspective view in a closed position showing a cover structure of an electrical connection portion of an embodiment together with an electric component container to which the cover structure is applied. FIG. 2 is a top view in the closed position showing the cover structure of the electrical connection portion of the embodiment together with the electrical component container to which the cover structure is applied. FIG. 3 is a side view in the closed position showing the cover structure of the electrical connection portion of the embodiment together with the electrical component container to which the cover structure is applied. FIG. 4 is a perspective view in the open position showing the cover structure of the electrical connection portion of the embodiment together with the electrical component container to which the cover structure is applied. FIG. 5 is an exploded perspective view of the cover structure of the electrical connection portion and the electrical component container. FIG. 6 is a perspective view showing an assembling process of the hinge structure. FIG. 7 is a top view showing a state after the second housing member and the cover member are assembled. FIG. 8 is a top view showing a modified form of the locking structure. FIG. 9 is a plan view showing a modified form of the second locking body.

Hereinafter, an embodiment of a cover structure for an electrical connection point according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

[Embodiment]
One of the embodiments of the cover structure for an electrical connection point according to the present invention will be described with reference to FIGS. 1 to 9.

Reference numeral 1 in FIGS. 1 to 5 indicates a cover structure of an electrical connection portion in the present embodiment.

The cover structure 1 is applied to an electric component housing B in which electric components are housed (FIGS. 1 to 5). For example, as the electric component container B, a so-called electric connection box or a conductive module such as a so-called bus bar module can be considered.

In the electrical connection box, for example, an electronic component as an electrical connection target is housed inside an insulating housing, and the electronic component is a conductive member (for example, a conductive component) as another electrical connection target. Bus bar) and electric wires are electrically connected inward. In this electrical junction box, the electrical connection point means a physical and electrical connection point between the electronic component and the conductive member, a physical and electrical connection point between the electronic component and the electric wire, and a physical point between the conductive member and the electric wire. Physical and electrical connection points and physical and electrical connection points via terminal fittings between electric wires. The electronic component refers to, for example, a circuit protection component such as a relay or a fuse. Here, electronic devices such as a circuit board and an electronic control unit (so-called ECU) are also considered as a form of electronic component. In this electric connection box, for example, a plurality of electric wires are drawn out, and the devices to be electrically connected, the power source, and the like in the vehicle are electrically connected via the electric wires. The electrical junction box forms a wire harness with such electric wires.

In this electric connection box, some work may be required for the electric connection portion inside the housing. Examples of work related to the electrical connection location include attaching/detaching work (insertion/removal work) to/from a conductive member of an electronic component, attaching/detaching work to/from an electronic component or a conductive member of a terminal fitting of an electric wire (screw fixing work, etc.) Can be considered for attachment/detachment work (screw fixing work, etc.), attachment/detachment work for connector electronic parts (insertion/extraction work), and circuit protection component inspection work. Therefore, the housing is formed with an opening through which work related to the electrical connection point can be performed. The opening is covered with an openable/closable cover member.

The electrically conductive module, for example, in a vehicle such as an electric vehicle or a hybrid vehicle, electrically connects adjacent ones of a plurality of battery cells forming a battery module, or electrically connects the battery cell side and the battery monitoring unit side. It is used when connecting to. For example, in this conductive module, a plurality of storage chambers are formed inside an insulating housing, and a conductive member (for example, a conductive bus bar) is stored in each storage chamber. The conductive member physically and electrically connects the electrode terminals of the adjacent battery cells. Further, one end of an electric wire is physically and electrically connected to the conductive member in the accommodation chamber. The other end of the electric wire is physically and electrically connected to the battery monitoring unit. In this conductive module, the electrical connection point means a physical and electrical connection point between the conductive member and the electrode terminal, a physical and electrical connection point between the conductive member and the electric wire, and a physical point between the electric wire and the battery monitoring unit. The electrical and electrical connection points.

In this conductive module, when the battery module is attached to or detached from the battery module, a predetermined work is performed on the electrical connection portion inside the housing. As work related to the electrical connection location, work of attaching/detaching the conductive member to/from the electrode terminal (screw fixing work, welding work, etc.) and work of attaching/detaching the electric wire to the conductive member (connector inserting/pulling work, welding work, etc.) are performed. Therefore, the housing is formed with an opening (opening of the storage chamber) capable of performing work related to the electrical connection point. The opening is covered with an openable/closable cover member.

Specifically, the cover structure 1 includes a housing 10 that has an electrical connection point inside and also has an opening 10a capable of performing a work related to the electrical connection point (FIGS. 4 and 5). The housing 10 is formed of an insulating material such as synthetic resin. The housing 10 is an assembly of a plurality of housing members in which a plurality of housing members are combined, and a space is formed inside by assembling the plurality of housing members. The housing 10 has an electrical connection point in its inner space.

The illustrated housing 10 includes a first housing member 11 and a second housing member 12 (FIGS. 1 to 5), and the first housing member 11 and the second housing member 12 are assembled to each other. There is an electrical connection point in the inner space formed by the above. The first housing member 11 shown here is a housing member in which an electrical connection target (not shown) is housed inward, and is formed into a rectangular shape having one opening 11a (FIG. 5). The second housing member 12 shown here is formed as a lid member that closes the opening 11 a of the first housing member 11. In this casing 10, a rectangular flat plate-shaped lid 12a in the second casing member 12 is formed with a rectangular opening 10a (FIGS. 4 and 5), and an electrical connection is made at the back of the opening 10a. A location (not shown) is provided. The second housing member 12 of this example has a peripheral wall body 12b in the shape of a rectangular tube that protrudes from the outer wall surface of the lid body 12a at the peripheral edge of the opening 10a (FIGS. 4 and 5).

The cover structure 1 rotatably supports the cover member 20 with respect to the second housing member 12 between the cover member 20 that closes the opening 10a and the open position and the closed position with respect to the opening 10a. And a hinge structure 30 (FIGS. 1 to 5).

The cover member 20 is formed of an insulating material such as synthetic resin. The cover member 20 of this example has a rectangular closing body 21 matching the shape of the opening 10a, and a rectangular cylindrical peripheral wall body 22 protruding from the peripheral edge of the closing body 21 (FIG. 1 to FIG. 1). 5). When the cover member 20 is in the closed position, the closing body 21 closes the opening 10a, and the peripheral wall body 22 covers the peripheral wall body 12b from the outside.

The hinge structure 30 includes a first engagement body 31 provided on the second housing member 12 and a second engagement body 32 provided on the cover member 20 (FIGS. 1 to 5). In the hinge structure 30, the first engaging body 31 and the second engaging body 32 are rotatably engaged with each other, so that the cover member 20 is moved to the second position between the open position and the closed position with respect to the opening 10a. The casing member 12 is rotatably supported. In the hinge structure 30, one of the first engagement body 31 and the second engagement body 32 is formed as a rotation shaft. The other of the first engagement body 31 and the second engagement body 32 is formed as a bearing that rotatably supports the shaft portion of the rotation shaft inserted along the axial direction. In this example, the first engagement body 31 is formed as a bearing, and the second engagement body 32 is formed as a rotation shaft.

The second engaging body 32 serving as the rotating shaft is provided on one of the four side portions (first side portion 21a) of the closing body 21 (FIGS. 1 to 5). The second engagement body 32 is arranged with its own axis, which is the center of rotation, along the longitudinal direction of the first side portion 21a. In the cover member 20 of this example, one of the four peripheral wall portions forming the peripheral wall body 22 (first peripheral wall portion 22a) is projected from the first side portion 21a, and the first peripheral wall portion 22a A second engagement body 32 is provided (FIGS. 1, 2 and 5). The second engagement body 32 of this example is formed integrally with the cover member 20 when the cover member 20 is formed.

The second engagement body 32 has a shaft portion 32a serving as a center of rotation and a connecting portion 32b connecting the shaft portion 32a to the outer wall surface of the first peripheral wall portion 22a (FIGS. 1 to 5). The second engagement body 32 pivotally supports the shaft portion 32a of the second engagement body 32 by the first engagement body 31, thereby rotating the cover member 20 around the axis of the shaft portion 32a. For example, the shaft portion 32a is formed in a cylindrical shape or a cylindrical shape. The shaft portion 32a is inserted into the first engagement body 31 from one end portion in the axial direction along the axial direction. The connecting portion 32b is projected from the outer wall surface of the first peripheral wall portion 22a, and the shaft portion 32a is arranged to face the outer wall surface of the first peripheral wall portion 22a with a space therebetween. The connecting portion 32b is connected to the other end of the shaft portion 32a in the axial direction. Therefore, the shaft portion 32a is connected to the connecting portion 32b in a cantilever state in which one end side is a free end and the other end side is a fixed end.

The first engaging body 31 as a bearing is provided on the lid 12a of the second housing member 12 (FIGS. 1 to 5). The first engaging body 31 of this example is formed integrally with the second housing member 12 when the second housing member 12 is formed. Here, the first engaging body 31 is projected from the outer wall surface of the lid 12a.

The first engagement body 31 is formed so that the shaft portion 32a of the second engagement body 32 that is axially supported does not separate in the radial direction. Therefore, the first engaging body 31 of this example prohibits the insertion of the shaft portion 32a up to the axial support position along the radial direction, and also prevents the insertion of the shaft portion 32a up to the axial support position along the axial direction. Form as acceptable. The first engagement body 31 shown here is formed in a U shape, and both ends thereof are connected to the outer wall surface of the lid body 12a. Here, the first engagement body 31 is formed in a U-shaped annular shape. As a result, in the first engagement body 31, only one of the openings in the axial direction of the U-shaped arc portion serves as an insertion opening up to the shaft supporting position of the shaft portion 32a. That is, in the first engaging body 31, only the insertion port becomes the insertion start position on one end side (free end side) of the shaft portion 32a toward the shaft supporting position. Therefore, the first engaging body 31 can lock the movement of the shaft portion 32a that is axially supported by the U-shaped arc portion in the radial direction, so that the shaft portion 32a is disengaged in the radial direction. Can be prevented.

In this cover structure 1, a plurality of hinge structures 30 having a common rotation center are provided. In this example, two hinge structures 30 are arranged side by side along the longitudinal direction of the first side portion 21 a of the closing body 21. In each hinge structure 30, each first engaging body 31 has its U-shaped arc portions oriented in the same direction, and their U-shaped arc portions are coaxially spaced from each other. Place it. Further, in each of the hinge structures 30, each of the second engaging bodies 32 has its one end side (free end side) in the axial direction of the shaft portion 32a directed coaxially in the same direction, and Coaxially spaced apart from each other. The respective first engaging bodies 31 may be arranged such that the distance between them is wider than the axial length of the shaft portion 32a.

In the cover structure 1, one end side (free end side) of the shaft portion 32a of each of the second engaging bodies 32 is arranged to face the insertion opening of the pair of first engaging bodies 31. Then, in the cover structure 1, one end side (free end side) of the shaft portion 32a of each second engaging body 32 starts to be inserted from the insertion opening of each first engaging body 31, and each shaft The portion 32a is inserted to the axial support position of each first engaging body 31 (FIG. 6). In the cover structure 1, the hinge structure 30 engages the first engaging body 31 and the second engaging body 32 in a rotatable state through such an assembling process. When a force in the direction opposite to the above acts on the cover member 20 in the open position, the shaft portions 32a of the respective second engaging bodies 32 may come out of the respective first engaging bodies 31.

Therefore, the cover structure 1 includes the locking structure 40 that maintains the rotatable support state between the second housing member 12 and the cover member 20 by the hinge structure 30 (see FIGS. 1 to 1). 5). In the locking structure 40, when the first housing member 11 and the second housing member 12 are completely assembled, the second engaging body 32 is attached to both end sides in the axial direction of the shaft portion 32a. It is configured to be sandwiched and locked in a rotatable state from. Accordingly, the locking structure 40 can maintain the rotatable support state between the second housing member 12 and the cover member 20 by the hinge structure 30. In addition, in the following, when the term "axial direction" is used without any particular reference, it means the axial direction of the shaft portion 32a.

Specifically, in the locking structure 40, when the first housing member 11 and the second housing member 12 are completely assembled, the second engaging body 32 is connected to one side and the other side in the axial direction. It is provided with a first locking body 41 and a second locking body 42 which are sandwiched and locked in a rotatable state from (FIGS. 1 to 5). In this locking structure 40, the first locking body 41 and the second locking body 42 are provided at positions that do not hinder the rotation between the first engaging body 31 and the second engaging body 32. In this locking structure 40, the relative movement amount of the second engagement body 32 in the axial direction with respect to the first engagement body 31 is within a range in which the first engagement body 31 and the second engagement body 32 are not separated from each other. The axial distance between the first locking body 41 and the second engaging body 32 and the axial distance between the second locking body 42 and the second engaging body 32 are set so as to stop inside. The locking structure 40 is provided for each hinge structure 30.

For example, the first locking body 41 is provided on the second housing member 12 so as to lock the second engaging body 32 from one side in the axial direction. Then, the second locking body 42 has the first locking body 41 and the second locking body on the other side in the axial direction when the first housing member 11 and the second housing member 12 are completely assembled. It is formed so as to be opposed to 32. That is, the second locking body 42 starts the assembly of the first housing member 11 and the second housing member 12, and when the assembly is completed, the second engaging body 32 is moved in the axial direction. It is formed so that it can be locked from the other side. Therefore, the second locking body 42 is provided on a member different from the second housing member 12. For example, the second locking body 42 may be provided in the first housing member 11 or may be provided in a housing component housed in the first housing member 11. The housing component is a component that is housed and fixed inside the first housing member 11, and may be, for example, a holding member (a so-called block) that holds the electronic component, a housing of the electronic component, or the like. Be done. In this example, the first housing member 11 is provided with the second locking body 42.

For example, the first engagement body 31 shown here is formed as a U-shaped annular bearing, and the end surface of the U-shape in the axial direction is one side in the axial direction with respect to the coupling portion 32b of the second engagement body 32. They are arranged facing each other. The first engagement body 31 and the connecting portion 32b continue to be opposed to each other regardless of the position of the cover member 20 with respect to the opening 10a between the open position and the closed position. Therefore, in the hinge structure 30 shown here, the first engaging body 31 as the bearing thereof is used as the first locking body 41 (FIGS. 1 to 5).

On the other hand, the second locking body 42 is formed as a protrusion protruding from the first housing member 11 (FIGS. 1 to 5). In this example, the second locking body 42 is provided on the peripheral wall body forming the opening 11a of the first housing member 11, and the second locking body 42 is projected outward from the opening 11a. Therefore, the second housing member 12 has the through hole 12c into which the second locking body 42 is inserted at the assembly completion position with the first housing member 11 (FIGS. 1, 2, and 4). And FIG. 5). The through hole 12c is provided for each hinge structure 30.

In the cover structure 1, by inserting the shaft portions 32a of the respective second engaging bodies 32 into the pair of first engaging bodies 31 to the axially supporting position and by assembling the cover member 20 to the second housing member 12, For each locking structure 40, the first engaging body 31 also used as the first locking body 41 and the connecting portion 32b of the second engaging body 32 are axially opposed to each other (FIGS. 6 and 7). ). Thus, in the cover structure 1, the first locking body 41 (first engaging body 31) of each locking structure 40 locks the connecting portion 32b of the second engaging body 32 from one side in the axial direction. It is arranged as possible.

Subsequently, in the cover structure 1, the second housing member 12 to which the cover member 20 is assembled and the first housing member 11 are assembled to provide the first housing member 11 respectively. The second locking body 42 is inserted into each through hole 12c in the second housing member 12. In the cover structure 1, when the assembly of the first housing member 11 and the second housing member 12 is completed, the second locking body 42 protruding from the through hole 12c for each locking structure 40. Is arranged so that the second engaging body 32 can be locked from the other side in the axial direction (FIGS. 1 to 4).

As described above, in the cover structure 1, when the assembly of the first housing member 11 and the second housing member 12 is completed, the first engaging member is attached to the connecting portion 32b of the second engaging body 32. The stopper 41 (first engaging body 31) is arranged to face one side in the axial direction, and the second locking body 42 is arranged to face the other side in the axial direction. Therefore, as long as the first housing member 11 and the second housing member 12 remain in the assembled state, the connecting portion 32b of the second engaging body 32 is rotatable from both end sides in the axial direction. Since it is sandwiched between the first locking body 41 and the second locking body 42 as it is, even if the first locking body 41 moves relative to the first locking body 31 in the axial direction, it is not separated from the first locking body 31. Within the range, it is locked by the first locking body 41 or the second locking body 42. The locking structure 40 exerts a lockable state with respect to the connecting portion 32b of the second engaging body 32 regardless of the position of the cover member 20 with respect to the second housing member 12. be able to. Therefore, the cover structure 1 can suppress detachment of the cover member 20 from the second housing member 12 regardless of the position of the cover member 20 with respect to the second housing member 12. ..

On the other hand, in the cover structure 1, by separating the first casing member 11 and the second casing member 12 from each other, the respective second locking bodies 42 provided on the first casing member 11 are attached to the second casing member. It can be pulled out from each through hole 12c in the member 12. Accordingly, in the cover structure 1, the opposed arrangement state in the axial direction between the respective second locking bodies 42 and the respective second engaging bodies 32 can be eliminated, so that the first engaging bodies The disengagement between 31 and the second engagement body 32 becomes possible. Therefore, in the cover structure 1, the cover member 20 can be removed from the second housing member 12 by separating the first housing member 11 and the second housing member 12 from each other.

As described above, the cover structure 1 at the electrical connection point in the present embodiment is provided with the locking structure 40, so that the cover member 20 can be placed in any position with respect to the housing 10 regardless of the position. Since the engagement body 31 and the second engagement body 32 can be kept in the axially supported state, it is possible to prevent unintended detachment of the cover member 20 from the housing 10. On the other hand, the cover structure 1 of the electrical connection portion in the present embodiment is provided with the first casing member 11 and the second casing when the second casing member 12 or the cover member 20 needs to be replaced or repaired. The cover member 20 can be removed from the second housing member 12 by separating the cover member 20 from the member 12.

Here, the second engagement body 32 as the rotation shaft may have a protrusion 32c on the other side in the axial direction with respect to the first engagement body 31 as the bearing (FIGS. 8 and 9). The protruding portion 32c is, for example, protruded radially outward from the outer peripheral surface of the shaft portion 32a. Here, an annular protrusion 32c concentric with the shaft 32a is provided. The locking structure 140 is configured as follows with respect to the second engagement body 32 having the protrusion 32c (FIGS. 8 and 9).

The locking structure 140 has a first locking body 141 and a second locking body 142 that have the same functions as the first locking body 41 and the second locking body 42 of the previous locking structure 40 ( (Fig. 8).

In the second engagement body 32 here, the first engagement body 31 is arranged on one side in the axial direction with respect to the protrusion 32c. Therefore, here, the first engaging body 31 is used as the first locking body 141, as in the previous example. On the other hand, the second locking body 142 is arranged to face the protrusion 32c on the other side in the axial direction. The second locking body 142 is made to project from the first housing member 11 in the same manner as the previous example. The second locking body 142 in this example rotatably fits the shaft portion 32a, and is arranged to face the protruding portion 32c on the other side in the axial direction in the fitted state. Here, the tip of the protruding portion 32c on the protruding direction side is formed in a U shape, and the shaft portion 32a is rotatably fitted inward of the U shape.

In this locking structure 140, when the first housing member 11 and the second housing member 12 are completely assembled, the first locking body is attached to the protrusion 32c of the second engaging body 32. 41 (first engaging body 31) is arranged to face one side in the axial direction, and second locking body 42 is arranged to face the other side in the axial direction.

In the cover structure 2, the shaft portions 32a of the respective second engaging bodies 32 are inserted into the pair of first engaging bodies 31 up to the shaft supporting position, and the cover member 20 is assembled to the second housing member 12, For each locking structure 140, the first engaging body 31 also used as the first locking body 141 and the protruding portion 32c of the second engaging body 32 are axially opposed to each other (FIG. 8 ). As a result, in the cover structure 2, the first locking body 141 (first engaging body 31) of each locking structure 140 locks the protrusion 32c of the second engaging body 32 from one side in the axial direction. It is arranged as possible.

Subsequently, in this cover structure 2, the second housing member 12 to which the cover member 20 is assembled and the first housing member 11 are assembled to provide the first housing member 11 respectively. The second locking body 142 is inserted into each through hole 12c in the second housing member 12. In the cover structure 2, when the assembly of the first housing member 11 and the second housing member 12 is completed, the second locking body 142 protruding from the through hole 12c for each locking structure 140. The shaft portion 32a is rotatably fitted inwardly of the U-shaped tip of the second engaging body 142, and the U-shaped tip of the second locking body 142 axially moves the projection 32c of the second engaging body 32 in the axial direction. Is arranged so that it can be locked from the other side (FIGS. 8 and 9).

As described above, in the cover structure 2, when the assembly of the first housing member 11 and the second housing member 12 is completed, the first engaging member is attached to the protruding portion 32c of the second engaging body 32. The stopper 141 (first engaging body 31) is arranged to face one side in the axial direction, and the second locking body 142 is arranged to face the other side in the axial direction. Therefore, as long as the first housing member 11 and the second housing member 12 remain in the assembled state, the protruding portion 32c of the second engagement body 32 is rotatable from both end sides in the axial direction. Since it is sandwiched between the first locking body 141 and the second locking body 142 as it is, even if it moves relative to the first engaging body 31 in the axial direction, it is not detached from the first engaging body 31. Within the range, it is locked by the first locking body 141 or the second locking body 142. Since the protrusion 32c of the second engagement body 32 of the locking structure 140 is formed in an annular shape, the cover member 20 causes the second housing member to be locked with respect to the protrusion 32c. It can be used in any position with respect to 12. Therefore, the cover structure 2 can suppress detachment of the cover member 20 from the second housing member 12 regardless of the position of the cover member 20 with respect to the second housing member 12. ..

On the other hand, in the cover structure 2, by separating the first casing member 11 and the second casing member 12 from each other, the respective second locking bodies 142 provided in the first casing member 11 are attached to the second casing. It can be pulled out from each through hole 12c in the member 12. As a result, in the cover structure 2, the opposed arrangement state in the axial direction between the respective second locking bodies 142 and the respective second engaging bodies 32 can be eliminated, so that the first engaging bodies The disengagement between 31 and the second engagement body 32 becomes possible. Therefore, in the cover structure 2, the cover member 20 can be removed from the second housing member 12 by separating the first housing member 11 and the second housing member 12 from each other.

As described above, the cover structure 2 at the electrical connection point in the present embodiment is provided with such a locking structure 140, so that the cover member 20 may be located at any position with respect to the housing 10. Since the first engagement body 31 and the second engagement body 32 can be kept in the pivotally supported state, it is possible to prevent the cover member 20 from being unintentionally detached from the housing 10. On the other hand, the cover structure 2 of the electrical connection portion in the present embodiment has, for example, the first housing member 11 and the second housing member when the second housing member 12 or the cover member 20 needs to be replaced or repaired. The cover member 20 can be removed from the second housing member 12 by separating the cover member 20 from the member 12.

1, 2 Cover Structure of Electrical Connection Part 10 Housing 10a Opening 11 First Housing Member 12 Second Housing Member 12c Through Hole 20 Cover Member 30 Hinge Structure 31 First Engaging Body 32 Second Engaging Body 32a Shaft Part 32b Connection part 32c Projection part 40,140 Locking structure 41,141 1st locking body 42,142 2nd locking body

Claims (6)

A first housing member and a second housing member, and having an electrical connection point in an inner space formed by assembling the first housing member and the second housing member, and the electrical connection A housing provided with an opening in the second housing member that enables work related to the location,
A cover member for closing the opening,
A first engaging body provided on the second housing member and a second engaging body provided on the cover member, and the first engaging body and the second engaging body are rotatably engaged with each other, and A hinge structure that rotatably supports the cover member with respect to the second housing member between an open position and a closed position with respect to the opening;
A locking structure for maintaining a rotatable support state between the second housing member and the cover member by the hinge structure;
Equipped with
One of the first engagement body and the second engagement body is formed as a rotation shaft,
The other of the first engagement body and the second engagement body is formed as a bearing that rotatably supports the shaft portion of the rotation shaft that is inserted along the axial direction,
The locking structure is capable of rotating the second engaging body from one side and the other side in the axial direction when the assembly of the first casing member and the second casing member is completed. A cover structure for an electrical connection point, comprising a first locking body and a second locking body that are sandwiched and locked in such a state. The first locking body is provided on the second housing member as a member that can lock the second locking body from the one side in the axial direction,
The second locking body is provided with the first locking body and the second locking body on the other side in the axial direction when the assembly of the first housing member and the second housing member is completed. The cover structure for an electrical connection point according to claim 1, wherein the cover structure is formed so as to face the united body. The cover structure for an electrical connection point according to claim 1 or 2, wherein the second locking body is provided on the first housing member. The second locking body is formed as a protrusion protruding from the first housing member,
4. The electrical connection point according to claim 3, wherein the second housing member has a through hole through which the second locking body is inserted at an assembly completion position with the first housing member. Cover structure. When the first engagement body is formed as the bearing and the second engagement body is formed as the rotation shaft, the locking structure uses the bearing as the first locking body. The cover structure for an electrical connection point according to any one of claims 1 to 4, wherein: The rotating shaft has a protruding portion that protrudes radially outward from the outer peripheral surface of the shaft portion on the other side in the axial direction with respect to the bearing,
The electrical connection according to claim 5, wherein the second locking body is arranged to face the protrusion on the other side in the axial direction, and the shaft is rotatably fitted to the second locking body. Cover structure of the place.

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