Protective cover

Abstract

To provide a protective cover which can be downsized.SOLUTION: A protective cover 1 comprises: an opening / closing part 10 which rotates around a predetermined axis so that it can be disposed at a closed position for covering protection objects 3, 4, and 5 and at an open position for exposing the protection objects 3, 4, and 5; and a support part 20 which supports the opening / closing part 10 in a manner rotatable around the axis. One of the opening / closing part 10 and the support part 20 has a shaft part 22 having a columnar part 23 with a circular cross section and a rectangular column part 24 with a polygonal cross section which are disposed to be aligned in the axis direction. The other one of the opening / closing part 10 and the support part 20 has a shaft receiving part 12, for receiving the shaft part 22, which has a column receiving part 13, brought into contact with the columnar part 23, and a rectangular column receiving part 14, brought into contact with the rectangular column part 24, such that the column receiving part and the rectangular column receiving part are disposed across the shaft part 22. The rectangular column receiving part 14 is formed such that: it comes into contact with one lateral surface 24a of the rectangular column part 24 when the opening / closing part 10 is at the closed position; and it comes into contact with another lateral surface 24b of the rectangular column part 24 when the opening / closing part 10 is at the open position.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a protective cover for protecting an object. [Background technology]

[0002] Conventionally, protective covers have been proposed for enclosing protected objects such as the poles of a battery mounted on a vehicle, battery terminals connected to the poles, and fuse units connected to the battery terminals (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3976511 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned conventional protective cover has an opening / closing part that can be opened and closed like a hinge, and a support part that is fixed to the outer wall of the battery, a fuse unit, etc. and supports the opening / closing part. The opening / closing part protects the object to be protected, such as the terminal posts of the battery, by covering the object to be protected.

[0005] One possible opening / closing mechanism for this type of protective cover is to provide a support section with a polygonal prism, such as a pentagonal or hexagonal prism, as a shaft, and a bearing section with grooves formed of multiple surfaces that abut against the outer circumferential surfaces of the shaft. This provides a sense of control when opening and closing the opening / closing section, and helps maintain the opening / closing section in both the open and closed states. However, in such an opening / closing mechanism, due to the structure of the shaft and the bearing, the outer surface of the shaft and the inner surface of the bearing do not always make surface contact when opening or closing the opening / closing section. Therefore, depending on the direction and magnitude of the force applied by the operator when opening or closing, the center of the shaft and the center of the bearing may become irregularly eccentric, resulting in variations in the trajectory of the opening / closing section (hereinafter referred to as the "opening / closing trajectory"). Therefore, to avoid unintended contact between the opening / closing section and the protected object during opening and closing, it is possible to design the opening / closing section to be larger than necessary to accommodate variations in the opening / closing trajectory. However, due to limited installation space for protective covers in vehicles, etc., large protective covers are not desirable.

[0006] One object of the present invention is to provide a protective cover that can be made compact. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the protective cover according to the present invention has the following features.

[0008] A protective cover for protecting an object to be protected, an opening / closing unit that can be rotated around a predetermined axis to be positioned in a closed position that covers the object to be protected and an open position that exposes the object to be protected; a support portion that supports the opening / closing portion so that the opening / closing portion is rotatable around the axis, One of the opening / closing portion and the support portion is a shaft portion including a columnar portion having a circular cross section perpendicular to the axis and a prismatic portion having a polygonal cross section perpendicular to the axis, the columnar portion being arranged to align in the direction of the axis, The other of the opening / closing portion and the support portion is a bearing portion that receives the shaft portion, the bearing portion having a cylindrical receiving portion that contacts the cylindrical portion and a rectangular column receiving portion that contacts the rectangular column portion, the cylindrical receiving portion being disposed so as to sandwich the shaft portion; The rectangular column receiving portion is When the opening / closing unit is in the closed position, it contacts one side surface of the prismatic portion, and when the opening / closing unit is in the open position, it contacts the other side surface of the prismatic portion. It is a protective cover. [Effects of the Invention]

[0009] According to the protective cover of the present invention, the shaft portion of one of the opening / closing unit and the support unit is received in the bearing portion of the other of the opening / closing unit and the support unit. This allows the opening / closing unit to be supported by the support unit so as to be rotatable around its axis. When opening or closing the opening / closing unit, the prismatic receiving portion contacts one side of the prismatic portion when the opening / closing unit is in the closed position, and the prismatic receiving portion contacts the other side of the prismatic portion when the opening / closing unit is in the open position. This provides a sense of control when the prismatic receiving portion overcomes the corner between the one side and the other side. When the opening / closing unit is not being operated, the corner prevents the prismatic receiving portion from moving, maintaining the opening / closing unit in an open or closed state. Furthermore, due to the structure of the cylindrical portion of the shaft unit and the cylindrical receiving portion of the bearing unit, the cylindrical portion and the cylindrical receiving portion can be constantly maintained in contact with each other when opening or closing the opening / closing unit. This reduces eccentricity between the shaft unit and the bearing unit. In this way, the protective cover of the present invention can reduce variations in the opening and closing trajectory by rotating the opening and closing part while suppressing eccentricity between the shaft part and the bearing part, without impairing the original functions of the protective cover, such as the sense of moderation when opening and closing and maintaining the open and closed state. Therefore, the protective cover of this configuration can be made smaller than conventional protective covers.

[0010] The present invention has been briefly described above. The details of the present invention will become more apparent from the detailed description of the invention set forth below, taken in conjunction with the accompanying drawings. [Brief explanation of the drawings]

[0011] [Figure 1]FIG. 1 is a perspective view showing a state in which an opening / closing part of a protective cover according to an embodiment of the present invention is in a closed position and covers an object to be protected that is fixed to the upper surface of a battery. [Figure 2] FIG. 2 is an enlarged view of part A in FIG. [Figure 3] 3 is a top view showing a state in which the opening / closing portion of the protective cover shown in FIG. 1 is in a closed position. [Figure 4] FIG. 4 is an enlarged view of part B in FIG. [Figure 5] 5 is a top view showing the shaft portion of the support portion located at part B in FIG. [Figure 6] 6 is a top view showing the bearing unit in a state where the opening / closing unit is in the closed position, which is located at part B in FIG. [Figure 7] FIG. 7 is a cross-sectional view taken along line CC in FIG. [Figure 8] FIG. 8 is a cross-sectional view taken along line DD in FIG. [Figure 9] 9 is a side view showing a state in which the opening / closing portion of the protective cover shown in FIG. 1 is in the open position and the object to be protected is exposed. [Figure 10] FIG. 10 is a cross-sectional view corresponding to FIG. 7, in which the opening / closing unit is in the open position. [Figure 11] FIG. 11 is a cross-sectional view corresponding to FIG. 8, showing the opening / closing unit in the open position. DETAILED DESCRIPTION OF THE INVENTION

[0012] <Embodiment> A protective cover 1 according to an embodiment of the present invention will be described below with reference to the drawings. For ease of explanation, the terms "front-rear direction," "left-right direction," "up-down direction," "front," "rear," "left," "right," "up," and "down" are defined below as shown in FIGS. 1 to 11. The "front-rear direction," "width direction," and "up-down direction" are perpendicular to one another. Note that the "front-rear direction," "left-right direction," and "up-down direction" are defined merely for ease of explanation and do not necessarily correspond to the front-rear direction, left-right direction, and up-down direction of a vehicle or the like when the protective cover 1 is mounted on the vehicle or the like.

[0013] In this example, as can be seen from Figures 1 and 9, the protective cover 1 is used to cover and protect objects to be protected, such as poles 3 provided on the top surface of a battery 2 mounted on a vehicle, battery terminals 4 connected to the poles 3, and a fuse unit 5 electrically connected to the poles 3 via the battery terminals 4 and fixed to the top surface of the battery 2.

[0014] 1 and 9, the protective cover 1 is made of resin and includes an opening / closing unit 10 that covers a part of the object to be protected in an openable and closable manner, and a support unit 20 that is fixed to the rear wall of the battery 2 or another part of the object to be protected so as to constantly cover the other part of the object and supports the opening / closing unit 10. An axis 22 that belongs to the support unit 20 and extends in the left-right direction, as described later, engages with a bearing unit 12 that belongs to the opening / closing unit 10 and extends in the left-right direction, as described later. The opening / closing unit 10 is supported by the support unit 20 so as to be rotatable about the axis that extends in the left-right direction of the bearing unit 12 between a closed position shown in FIG. 1 and an open position (a position rotated 90 degrees from the closed position) shown in FIG. 9.

[0015] In this example, the opening / closing part 10 opens and closes as part of the object to be protected, which are the pole 3, the battery terminal 4, and part of the fuse unit 5 located on the upper surface of the battery 2, while the support part 20 always covers as the other part of the object to be protected, which is the other part of the fuse unit 5 that protrudes further rearward from the rear end edge of the upper surface of the battery 2. The configurations of the opening / closing part 10 and the support part 20 that make up the protective cover 1 will be described below in order.

[0016] First, the support part 20 will be described. As shown in Figures 1 to 5, the resin support part 20 includes a cover main body part 21 and a pair of left and right shaft parts 22 provided on the front edge part of the cover main body part 21. The cover main body part 21 has a generally rectangular box shape that opens substantially downward, and is fixed to the rear wall of the battery 2 or another part of the object to be protected, thereby constantly covering and protecting the other part of the object to be protected.

[0017] The pair of left and right shafts 22 are arranged side by side with a gap in the left-right direction along a common axis extending in the left-right direction. Each shaft 22 has a shape that extends linearly in the left-right direction, and as shown in FIG. 5, is composed of a pair of columnar portions 23 located at both left and right ends and a prismatic portion 24 located between the pair of columnar portions 23. Each shaft 22 is fixed to the cover main body 21 via a pair of left and right legs 25 that extend forward from the cover main body 21 so as to sandwich the shaft 22 from both left and right sides. The cross section (cross section perpendicular to the axis) of the columnar portion 23 is circular (see FIG. 7), and the cross section (cross section perpendicular to the axis) of the prismatic portion 24 is polygonal (specifically, a square with four slightly rounded corners) (see FIG. 8). As shown in FIG. 8, in this example, each of the four side surfaces (planes) extending in the left-right direction of the prismatic portion 24 is inclined at 45 degrees with respect to the front-to-back direction (or the up-down direction) when viewed in the left-to-right direction.

[0018] Next, the opening-closing unit 10 will be described. As shown in FIGS. 1 to 4 and 6, the resin opening-closing unit 10 includes a cover main body 11 and a pair of left and right bearings 12 provided at the rear edge of the cover main body 11. The cover main body 11 has a generally rectangular box shape that opens downward, and serves to cover and protect a portion of the object to be protected. When the opening-closing unit 10 is in the closed position, the cover main body 11 is supported by a support portion 20 so as to extend forward from an engagement point between the shaft portion 22 and the bearing portion 12, and covers the portion of the object to be protected (see FIG. 1). When the opening-closing unit 10 is in the open position, the cover main body 11 is supported by a support portion 20 so as to extend upward from an engagement point between the shaft portion 22 and the bearing portion 12, and exposes the portion of the object to be protected (see FIG. 9).

[0019] The pair of left and right bearing portions 12 are arranged side by side at a distance in the left-right direction, corresponding to the pair of left and right shaft portions 22 of the support portion 20. Each bearing portion 12 is a portion that receives the corresponding shaft portion 22 of the support portion 20, and as shown in FIG. 6, is composed of a pair of cylindrical receiving portions 13 located at both left and right ends, and a prismatic receiving portion 14 located between the pair of cylindrical receiving portions 13. As shown in FIG. 4, the pair of cylindrical receiving portions 13 are portions that come into contact with the pair of cylindrical portions 23 of the shaft portion 22, and the prismatic receiving portion 14 is a portion that comes into contact with the prismatic portion 24 of the shaft portion 22.

[0020] As shown in Fig. 7, when the opening-closing unit 10 is in the closed position, each cylindrical receiving portion 13 is composed of a flat vertical wall portion 15 that rises upward from the rear edge of the cover main body portion 11 and extends in the left-right direction, and a horizontal wall portion 16 that protrudes rearward from the lower end of the vertical wall portion 15 and extends in the left-right direction. A concave curved surface 13a that is curved in an arc shape corresponding to the shape of the outer circumferential curved surface of the cylindrical portion 23 of the shaft portion 22 is formed at the corner of the boundary between the vertical wall portion 15 and the horizontal wall portion 16. As shown in Fig. 7, when the opening-closing unit 10 is in the closed position, the concave curved surface 13a has an arc shape that is located between a radius r1 extending forward from a center position P of the arc constituting the concave curved surface 13a and a radius r2 extending diagonally downward and rearward from the center position P, as viewed from the left-right direction. The concave curved surface 13a has the same radius of curvature as the outer circumferential curved surface of the cylindrical portion 23, and is in constant surface contact with the outer circumferential curved surface of the cylindrical portion 23 of the shaft portion 22 (this point will be described in detail later).

[0021] As shown in FIG. 8 , when the opening-closing unit 10 is in the closed position, the rectangular pillar receiving portion 14 is composed of a flat vertical wall portion 17 that rises upward from the rear edge of the cover body 11 and extends in the left-right direction, connecting with a pair of vertical wall portions 15 located on both the left and right sides; an elastic support portion 18 that curves from the upper end of the vertical wall portion 17, bending back toward the rear, and extending in the left-right direction; and a flat contact portion 19 that extends from the extending end of the elastic support portion 18 diagonally downward and rearward at a 45-degree angle with respect to the front-to-rear direction (or the up-down direction) and also extends in the left-to-right direction. The elastic support portion 18 is elastically deformable so that the angle θ (see FIG. 8 ) between the vertical wall portion 17 and the contact portion 19 increases or decreases, thereby elastically supporting the contact portion 19. When the opening-closing unit 10 is in the closed position, the inner surface (flat surface) 19a of the contact portion 19 is in surface contact with the first side surface 24a of the rectangular pillar portion 24 (see FIG. 8 ). Here, when the elastic support portion 18 is slightly elastically deformed in the direction in which the angle θ increases, the elastic restoring force of the elastic support portion 18 causes the inner surface 19a of the contact portion 19 to press and contact the first side surface 24a of the rectangular column portion 24. On the other hand, when the elastic support portion 18 is not elastically deformed, the inner surface 19a of the contact portion 19 contacts the first side surface 24a of the rectangular column portion 24 without any surface pressure. The configurations of the opening / closing portion 10 and the support portion 20 that make up the protective cover 1 have been described above.

[0022] As can be seen from a comparison of Figures 7 and 8, when the opening / closing unit 10 is in the closed position, the concave curved surface 13a of the cylindrical receiving portion 13 of the bearing portion 12 is positioned diagonally downward on the front side of the cylindrical portion 23 of the shaft portion 22, and the inner surface 19a of the contact portion 19 of the prismatic receiving portion 14 of the bearing portion 12 is positioned diagonally upward on the rear side of the prismatic portion 24 of the shaft portion 22, so that the concave curved surface 13a of the cylindrical receiving portion 13 and the inner surface 19a of the contact portion 19 are positioned to sandwich the shaft portion 22 at the diagonally downward front side and the diagonally upward rear side. As a result, the reaction force directed obliquely upward and rearward that the inner surface 19a of the contact portion 19 receives from the first side surface 24a due to pressing contact between the inner surface 19a of the contact portion 19 and the first side surface 24a of the rectangular column portion 24 acts to suppress separation between the concave curved surface 13a of the cylindrical receiving portion 13 and the outer circumferential curved surface of the cylindrical portion 23, i.e., so that the concave curved surface 13a comes into contact with the outer circumferential curved surface of the cylindrical portion 23. For example, even if a forward external force acts on the cover main body 11 of the opening / closing unit 10 in the closed position, the forward movement of the cover main body 11 is suppressed by the rearward component of the reaction force directed obliquely upward and rearward that the inner surface 19a of the contact portion 19 receives from the first side surface 24a.

[0023] This effect of suppressing separation between the concave curved surface 13a and the outer peripheral curved surface of the cylindrical portion 23 due to the reaction force that the inner surface 19a of the contact portion 19 receives from the rectangular column portion 24 is not limited to when the opening-closing unit 10 is in the closed position, but can be exerted when the opening-closing unit 10 is in any position between the closed position and the open position. For example, when the opening-closing unit 10 is in the open position, as can be seen from a comparison of Figures 10 and 11, the concave curved surface 13a of the cylindrical receiving portion 13 and the inner surface 19a of the contact portion 19 are arranged to sandwich the shaft portion 22 on the obliquely upper front side and the obliquely lower rear side. The inner surface 19a of the contact portion 19 is in surface contact with the second side surface 24b of the rectangular column portion 24 (see Figure 11). Here, when the elastic support portion 18 is slightly elastically deformed in the direction in which the angle θ increases, the elastic restoring force of the elastic support portion 18 causes the inner surface 19a of the contact portion 19 to press and contact the second side surface 24b of the rectangular column portion 24. On the other hand, when the elastic support portion 18 is not elastically deformed, the inner surface 19a of the contact portion 19 comes into contact with the second side surface 24b of the rectangular column portion 24 without any surface pressure. As a result, the reaction force acting obliquely downward and rearward on the inner surface 19a of the contact portion 19 from the second side surface 24b due to the pressing contact between the inner surface 19a of the contact portion 19 and the second side surface 24b of the rectangular column portion 24 acts to suppress separation between the concave curved surface 13a of the cylindrical receiving portion 13 and the outer peripheral curved surface of the cylindrical portion 23, i.e., so that the concave curved surface 13a comes into contact with the outer peripheral curved surface of the cylindrical portion 23. For example, even if an upward external force acts on the cover main body portion 11 of the opening / closing portion 10 in the open position, the upward movement of the cover main body portion 11 is suppressed by the downward component of the rearward diagonally downward reaction force that the inner surface 19a of the contact portion 19 receives from the second side surface 24b.

[0024] As described above, whether the opening-closing unit 10 is in a position between the closed position and the open position, the reaction force that the inner surface 19a of the contact portion 19 receives from the rectangular column portion 24 suppresses separation between the concave curved surface 13a of the cylindrical receiving portion 13 and the outer circumferential curved surface of the cylindrical portion 23, thereby maintaining a state in which the concave curved surface 13a of the cylindrical receiving portion 13 and the outer circumferential curved surface of the cylindrical portion 23 are in constant surface contact. As a result, when the opening-closing unit 10 is opened and closed between the open position and the closed position, eccentricity between the shaft portion 22 and the bearing portion 12 is reduced, and the opening-closing unit 10 can be rotated.

[0025] The reaction force that the inner surface 19a of the contact portion 19 receives from the prismatic portion 24 not only prevents the concave curved surface 13a of the cylindrical receiving portion 13 from separating from the outer circumferential curved surface of the cylindrical portion 23, but also contributes to a sense of control when opening and closing the opening / closing unit 10 and maintaining the open / closed state. Specifically, for example, a case where the opening / closing unit 10 is rotated from the closed position to the open position will be described as an example. In this case, the inner surface 19a of the contact portion 19 of the bearing portion 12 (rectangular column receiving portion 14) goes from a state in which it contacts the first side surface 24a of the prismatic portion 24 of the shaft portion 22 (see FIG. 8), to a state in which it climbs over the corner between the first side surface 24a and the second side surface 24b of the prismatic portion 24, and then to a state in which it contacts the second side surface 24b of the prismatic portion 24 of the shaft portion 22 (see FIG. 11). During the first period from when the inner surface 19a of the contact portion 19 contacts the first side surface 24a of the rectangular column portion 24 to when it passes over the corner between the first side surface 24a and the second side surface 24b of the rectangular column portion 24, the amount of elastic deformation of the elastic support portion 18 in the direction in which the angle θ increases gradually increases as the opening-closing portion 10 continues to rotate, due to the maintenance of the contact state between the corner and the inner surface 19a of the contact portion 19. Therefore, during the first period, the elastic restoring force of the elastic support portion 18 acts as a moment in the direction in which the opening-closing portion 10 returns to the closed position, which is the direction in which the amount of elastic deformation decreases. On the other hand, during a second period from when the inner surface 19a of the contact portion 19 climbs over the corner between the first side surface 24a and the second side surface 24b of the rectangular column portion 24 to when it comes into contact with the second side surface 24b of the rectangular column portion 24, the amount of elastic deformation of the elastic support portion 18 in the direction in which the angle θ increases gradually decreases as the contact state between the corner and the inner surface 19a of the contact portion 19 is maintained as the opening / closing unit 10 continues to rotate. Therefore, during the second period, the elastic restoring force of the elastic support portion 18 acts as a moment in the direction in which the opening / closing unit 10 moves to the open position, which is the direction in which the amount of elastic deformation decreases.

[0026] Thus, during the first period, the elastic restoring force of the elastic support member 18 acts as a moment that returns the opening-closing unit 10 to the closed position. Therefore, when the opening-closing unit 10 is in the closed position, the opening-closing unit 10 is maintained in the closed position unless an external force is applied to the opening-closing unit 10. Similarly, during the second period, the elastic restoring force of the elastic support member 18 acts as a moment that moves the opening-closing unit 10 to the open position. Therefore, when the opening-closing unit 10 is in the open position, the opening-closing unit 10 is maintained in the open position unless an external force is applied to the opening-closing unit 10. Furthermore, during the first period, the external force required to rotate the opening-closing unit 10 gradually increases as the amount of elastic deformation of the elastic support member 18 increases. That is, the external force required to rotate the opening-closing unit 10 reaches its maximum when the inner surface 19a of the contact portion 19 overcomes the corner between the first side surface 24a and the second side surface 24b of the rectangular column portion 24. Therefore, when the inner surface 19a of the contact portion 19 passes over the corner between the first side surface 24a and the second side surface 24b of the prismatic portion 24, a sense of click is obtained when opening and closing the opening / closing portion 10.

[0027] <Actions and Effects> As described above, according to the protective cover 1 of this embodiment, the shaft portion 22 of the support portion 20 is received in the bearing portion 12 of the opening-closing unit 10, and the opening-closing unit 10 is supported by the support portion 20 so as to be rotatable about its axis. When the opening-closing unit 10 is opened or closed, the cylindrical portion 23 of the shaft portion 22 and the cylindrical receiving portion 13 of the bearing portion 12 are always in contact with each other, thereby reducing eccentricity between the shaft portion 22 and the bearing portion 12 and allowing the opening-closing unit 10 to rotate. Furthermore, when the opening-closing unit 10 is in the closed position, the prismatic receiving portion 14 contacts the first side surface 24a of the prismatic portion 24, and when the opening-closing unit 10 is in the open position, the prismatic receiving portion 14 contacts the second side surface 24b of the prismatic portion 24. This provides a sense of control when the rectangular pillar receiving portion 14 moves over the corner between the first side surface 24a and the second side surface 24b, and when the opening / closing unit 10 is not being operated, the movement of the rectangular pillar receiving portion 14 is prevented by the corner, so the opening / closing unit 10 is maintained in an open or closed state. In this way, the protective cover 1 according to this embodiment retains its original functions of providing a sense of control when opening / closing and maintaining the open / closed state, while reducing eccentricity between the shaft portion 22 and the bearing portion 12 to allow the opening / closing unit 10 to rotate, thereby suppressing variation in the opening / closing trajectory of the opening / closing unit 10. Therefore, the protective cover 1 according to this embodiment can be made smaller than conventional protective covers.

[0028] Furthermore, the rectangular column receiving portion 14 has a contact portion 19 that contacts the rectangular column portion 24, and an elastic support portion 18 that elastically supports the contact portion 19. As a result, even if the rectangular column portion 24 is pressed strongly against the contact portion 19, the opening and closing portion 10 can be opened and closed by the action of the elastic support portion 18, and the opening and closing state of the opening and closing portion 10 can be more firmly maintained. Furthermore, wear of the rectangular column portion 24 and the rectangular column receiving portion 14 (i.e., the contact portion 19) during opening and closing can be suppressed, thereby improving the durability of the protective cover 1.

[0029] Furthermore, the cylindrical receiving portion 13 has a concave curved surface 13a that is curved to correspond to the shape of the outer circumferential surface of the cylindrical portion 23. This makes it possible to more reliably maintain a state in which the cylindrical portion 23 and the cylindrical receiving portion 13 are in constant contact when opening and closing, thereby further reducing the eccentricity between the shaft portion 22 and the bearing portion 12.

[0030] Furthermore, the first side surface 24a of the rectangular column portion 24 of the shaft portion 22 has a surface shape (for example, a surface shape inclined with respect to the predetermined direction (forward)) that is not parallel to the predetermined direction (forward) from the engagement point between the shaft portion 22 and the bearing portion 12 toward the object to be protected when the opening-closing unit 10 is in the closed position. This makes it possible to prevent the opening-closing unit 10 from unintentionally moving in the predetermined direction (forward) and separating the shaft portion 22 and the bearing portion 12, even if an external force such as vibration acts on the opening-closing unit 10 when the opening-closing unit 10 is in the closed position.

[0031] <Other aspects> It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiments, and modifications, improvements, etc. are possible as appropriate. Furthermore, the material, shape, dimensions, number, location, etc. of each component in the above-described embodiments are arbitrary as long as they can achieve the present invention, and are not limited thereto.

[0032] In the above embodiment, the shaft portion 22 is provided on the support portion 20 side, and the bearing portion 12 is provided on the opening / closing portion 10 side. Alternatively, the shaft portion 22 may be provided on the opening / closing portion 10 side, and the bearing portion 12 may be provided on the support portion 20 side.

[0033] Furthermore, in the above embodiment, in the shaft portion 22, the prismatic portion 24 is located between a pair of columnar portions 23 located at both left and right ends, and in the bearing portion 12, the prismatic receiving portion 14 is located between a pair of columnar receiving portions 13 located at both left and right ends. Alternatively, in the shaft portion 22, the columnar portion 23 may be located between a pair of prismatic portions 24 located at both left and right ends, and in the bearing portion 12, the columnar receiving portion 13 may be located between a pair of prismatic receiving portions 14 located at both left and right ends.

[0034] Here, the features of the above-described embodiment of the protective cover 1 according to the present invention will be briefly summarized and listed below in [1] to [4].

[0035] [1] A protective cover (1) for protecting objects (3, 4, 5), an opening / closing unit (10) that can be rotated around a predetermined axis to be positioned in a closed position where the object to be protected (3, 4, 5) is covered and an open position where the object to be protected (3, 4, 5) is exposed; a support part (20) that supports the opening / closing part (10) so that the opening / closing part (10) is rotatable around the axis, One of the opening / closing portion (10) and the support portion (20) is The shaft portion (22) has a cylindrical portion (23) having a circular cross section perpendicular to the axis and a prismatic portion (24) having a polygonal cross section perpendicular to the axis, the cylindrical portion (23) being arranged so as to be aligned in the direction of the axis, The other of the opening / closing portion (10) and the support portion (20) is a bearing portion (12) that receives the shaft portion (22), the bearing portion (12) having a cylindrical receiving portion (13) that contacts the cylindrical portion (23) and a rectangular column receiving portion (14) that contacts the rectangular column portion (24), the cylindrical receiving portion (13) being arranged to sandwich the shaft portion (22); The rectangular column receiving portion (14) is When the opening / closing unit (10) is in the closed position, it contacts one side surface (24a) of the prismatic portion (24), and when the opening / closing unit (10) is in the open position, it contacts the other side surface (24b) of the prismatic portion (24). Protective cover(1)

[0036] According to the protective cover having the configuration [1] above, the shaft portion of one of the opening / closing unit and the support unit is received in the bearing portion of the other of the opening / closing unit and the support unit. This allows the opening / closing unit to be supported by the support unit so that it can rotate around its axis. When the opening / closing unit is opened or closed, the prismatic receiving portion contacts one side of the prismatic portion when the opening / closing unit is in the closed position, and the prismatic receiving portion contacts the other side of the prismatic portion when the opening / closing unit is in the open position. This provides a sense of control when the prismatic receiving portion overcomes the corner between the one side and the other side. When the opening / closing unit is not being operated, the corner prevents the prismatic receiving portion from moving, maintaining the opening / closing unit in an open or closed state. Furthermore, due to the structure of the cylindrical portion of the shaft unit and the cylindrical receiving portion of the bearing unit, the cylindrical portion and the cylindrical receiving portion can be constantly maintained in contact with each other when the opening / closing unit is opened or closed. This reduces eccentricity between the shaft unit and the bearing unit. In this way, the protective cover of this configuration can reduce variations in the opening and closing trajectory by rotating the opening and closing part while suppressing eccentricity between the shaft part and the bearing part, without compromising the original functions of the protective cover, such as the sense of moderation when opening and closing and maintaining the open and closed state. Therefore, the protective cover of this configuration can be made smaller than conventional protective covers.

[0037] [2] In the protective cover (1) described in [1] above, The rectangular column receiving portion (14) is The contact portion (19) contacts the prismatic portion (24), and the elastic support portion (18) elastically supports the contact portion (19). Protective cover(1)

[0038] According to the protective cover of the configuration [2] above, the prismatic receiving portion has a contact portion that contacts the prismatic portion and an elastic support portion that elastically supports the contact portion. This allows the elastic support portion to maintain a state in which the contact portion is appropriately pressed against the outer surface of the prismatic portion when the opening / closing portion is opened or closed. This reduces wear on the prismatic portion and the prismatic receiving portion (i.e., the contact portion) during opening and closing, thereby improving the durability of the protective cover. Furthermore, by adjusting the elastic force of the elastic support portion, the opening / closing portion can be firmly maintained in the open or closed state.

[0039] [3] In the protective cover (1) described in [1] above, The cylindrical receiving portion (13) is A concave curved surface (13a) curved to correspond to the shape of the outer circumferential surface of the cylindrical portion (23). Protective cover(1)

[0040] According to the protective cover of the configuration [3] above, the cylindrical receiving part has a concave curved surface that is curved to correspond to the shape of the outer circumferential surface of the cylindrical part. This makes it possible to more reliably maintain a state in which the cylindrical part and the cylindrical receiving part are in constant contact when opening and closing, thereby further suppressing eccentricity between the shaft part and the bearing part.

[0041] [4] In the protective cover (1) described in [1] above, The opening and closing part (10) is the protection device is supported by the support portion (20) so as to extend in a predetermined direction from an engagement point between the shaft portion (22) and the bearing portion (12) toward the object to be protected (3, 4, 5) when the protection device is in the closed position; The one side surface (24a) of the prismatic portion (24) is having a surface shape that is not parallel to the predetermined direction; Protective cover(1)

[0042] According to the protective cover having the configuration [4] above, one side surface of the rectangular column portion of the shaft portion has a surface shape that is not parallel to the above-mentioned predetermined direction (for example, a surface shape that is inclined with respect to the predetermined direction). This makes it possible to prevent the opening / closing portion from moving in the predetermined direction and unintentionally separating the shaft portion and the bearing portion, even if an external force such as vibration acts on the opening / closing portion when the opening / closing portion is in the closed position. [Explanation of symbols]

[0043] 1 protective cover 3. Pillars (protected) 4 Battery terminals (protected) 5 Fuse unit (protected) 10 Opening and Closing Section 12 Bearing section 13 Cylindrical support 13a Concave surface 14 Square column support 18 Elastic support part 19 Contact area 20 Support part 22 Shaft 23 Cylinder 24 Square column 24a First Aspect (One Aspect) 24b Second Aspect (Other Aspect)

Claims

1. A protective cover for protecting an object to be protected, an opening / closing unit that can be rotated around a predetermined axis to be positioned in a closed position that covers the object to be protected and an open position that exposes the object to be protected; a support portion that supports the opening / closing portion so that the opening / closing portion is rotatable around the axis, One of the opening / closing portion and the support portion is a shaft portion including a columnar portion having a circular cross section perpendicular to the axis and a prismatic portion having a polygonal cross section perpendicular to the axis, the columnar portion being arranged to align in the direction of the axis, The other of the opening / closing portion and the support portion is a bearing portion that receives the shaft portion, the bearing portion having a cylindrical receiving portion that contacts the cylindrical portion and a rectangular receiving portion that contacts the rectangular portion, the cylindrical receiving portion being arranged to sandwich the shaft portion; The rectangular column receiving portion is When the opening / closing unit is in the closed position, it contacts one side surface of the prismatic portion, and when the opening / closing unit is in the open position, it contacts the other side surface of the prismatic portion. Protective cover.

2. The protective cover according to claim 1, The rectangular column receiving portion is a contact portion that contacts the prismatic portion, and an elastic support portion that elastically supports the contact portion, Protective cover.

3. The protective cover according to claim 1, The cylindrical receiving portion is A concave curved surface is formed to correspond to the shape of the outer peripheral surface of the cylindrical portion. Protective cover.

4. The protective cover according to claim 1, The opening and closing section is the support portion is supported by the support portion so as to extend in a predetermined direction from an engagement point between the shaft portion and the bearing portion toward the object to be protected when the protection device is in the closed position; The one side surface of the prismatic portion is having a surface shape that is not parallel to the predetermined direction; Protective cover.

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