On-vehicle accessory support member

Abstract

To provide an on-vehicle accessory support member which supports a vehicle cabin interior accessory, such as a room mirror, and enables improvement of flexibility of a design for adjusting a breaking load of a fitting part which is assembled to a base fixed to a vehicle in a sliding manner.SOLUTION: A first support member 4 serving as an on-vehicle accessory support member has a fitting part 7 which is assembled to a base 50 in a sliding manner. A bottom part 8 of the fitting part 7 has thin parts 8g, 8h at positions located adjacent to side walls 9, 10 of the fitting part 7. The thin parts 8g, 8h are set at parts in a front-back direction parallel to a slide assembly direction. Side walls 12, 13 of the first support member 4 have recessed parts 16, 17 below the bottom part 8. The recessed parts 16, 17 are provided so as to form the thin parts 8g, 8h.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an in-vehicle accessory support member that supports in-vehicle accessories such as a room mirror.

Background Art

[0002] As an in-vehicle accessory, an in-vehicle mirror is required to reduce damage to the occupant's head, for example, when the occupant's head contacts the in-vehicle mirror in a vehicle collision accident. In this regard, Patent Document 1 below discloses an in-vehicle accessory device including a base having an upper surface fixed in the vehicle interior, a lower surface opposite to the upper surface, a first side surface disposed between the lower surface and the upper surface, and a second side surface disposed on the opposite side of the first side surface, and a fitting portion (mount) that is slidably assembled while surrounding the first side surface, the lower surface, and the second side surface. The side wall (the first side wall or the second side wall) of the fitting portion has a thin-walled portion. By destroying the vicinity of this thin-walled portion during an impact, the accessory is detached.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the structure of Patent Document 1, since a thin-walled portion is set on the side wall of the fitting portion that is easily restricted by the design (outer shape) of the in-vehicle accessory support member, due to this restriction, there is little room for adjusting the breaking load of the fitting portion.

[0005] In view of the above circumstances, an object of the present invention is to provide an in-vehicle accessory support member that can increase the degree of freedom in design for adjusting the breaking load of the fitting portion.

Means for Solving the Problems

[0006] The present invention relates to a member for supporting an accessory in a vehicle interior, a base including an upper surface fixed in the vehicle interior, a lower surface opposite to the upper surface, a first side surface disposed between the lower surface and the upper surface, and a second side surface disposed on the opposite side of the first side surface, and a fitting portion slidably assembled while surrounding the first side surface, the lower surface, and the second side surface; a first side wall; and a second side wall provided on the opposite side of the first side wall, wherein the fitting portion includes a bottom portion facing the lower surface, a first opposing side wall erected from the bottom portion to face the first side surface, and a second opposing side wall erected from the bottom portion to face the second side surface, a part of the first side wall from the upper end constitutes the first opposing side wall, and the first side wall has a first recess on the lower side of the first opposing side wall, a part of the second side wall from the upper end constitutes the second opposing side wall, and the second side wall has a second recess on the lower side of the second opposing side wall, the bottom portion has a thin portion that is thinner than other portions in a part in the front-rear direction parallel to the sliding assembly direction at a position adjacent to the first opposing side wall and the second opposing side wall, the first recess and the second recess are provided so as to form the thin portion.

[0007] According to the present invention, since the thin portion is set at the bottom of the fitting portion that is less likely to be restricted by the design (outer shape), the degree of freedom in design for adjusting the breaking load of the fitting portion can be increased. In addition, the "thin portion" in the present invention includes the case where the wall thickness is "0", that is, the case where it is formed in a penetrating shape.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The in-vehicle accessory device 1 in FIG. 1 is mounted near the driver's seat in the vehicle interior and is configured as an in-vehicle mirror device that reflects the rear of the vehicle. The accessory device 1 includes an in-vehicle mirror 2 (mirror) that reflects the rear of the vehicle as an in-vehicle accessory, and a support member 3 that supports the mirror 2. Note that the in-vehicle accessory may be a display device (for example, a liquid crystal display or the like) that displays the captured image of the imaging unit that captures the periphery of the vehicle.

[0010] The support member 3 is formed in a longitudinal shape, one end in the longitudinal direction is supported by the ceiling 101 of the vehicle interior, and the other end is connected to the mirror 2. Note that the support member 3 may be supported by the windshield 102. The mirror 2 is supported in a cantilever shape by the support member 3.

[0011] The support member 3 includes a first support member 4, a second support member 5, and a third support member 6. The first support member 4 is formed in a longitudinal shape, one end in the longitudinal direction is supported by a base 50 (see FIGS. 2 to 5) fixed to the ceiling 101, and the other end 15 is connected to the second support member 5. Details of the first support member 4 will be described later.

[0012] The second support member 5 is formed in a cylindrical shape, the end 15 of the first support member 4 is inserted into the opening on one end side, and a part of the third support member 6 is inserted into the opening on the other end side. Note that the first support member 4 and the second support member 5 may be configured as an integral member. The third support member 6 includes a plate portion connected to the back surface of the mirror 2 and a spherical portion that protrudes from the surface of the plate portion and is inserted into the second support member 5.

[0013] Next, the base 50 to which the support member 3 is assembled will be described. In FIGS. 2 to 5, the base 50 and the first support member 4 are shown in an enlarged manner compared to those shown in FIG. 1. Hereinafter, a direction A (see FIGS. 1 and 2) parallel to the slide assembly direction of the base 50 and the first support member 4 is defined as the front-rear direction of the first support member 4 and the base 50. Also, the slide assembly direction A1 (see FIGS. 1 and 2) of the first support member 4 with respect to the base 50 is defined as the front direction of the base 50 and the first support member 4. The opposite direction A2 (see FIGS. 1 and 2) of the slide assembly direction A1 is defined as the rear direction of the base 50 and the first support member 4. Also, the direction from the first opposing side wall 9 to the second opposing side wall 10 of the first support member 4 described later and its opposite direction are defined as the left-right direction B (see FIGS. 2 and 3) of the base 50 and the first support member 4. Among the left-right directions B, the direction B1 (see FIGS. 2 and 3) from the first opposing side wall 9 to the second opposing side wall 10 is defined as the right direction of the base 50 and the first support member 4, and its opposite direction B2 (see FIGS. 2 and 3) is defined as the left direction. Also, a direction C (see FIGS. 1 and 3) perpendicular to both the front-rear direction A and the left-right direction B is defined as the up-down direction of the base 50 and the first support member 4. Among the up-down directions C, the direction C1 (see FIGS. 1 and 3) from the recesses 16 and 17 (see FIG. 3) described later to the fitting portion 7 (see FIG. 3) side is defined as the up direction of the base 50 and the first support member 4, and its opposite direction C2 (see FIGS. 1 and 3) is defined as the down direction.

[0014] As shown in FIGS. 2 and 3, the base 50 includes an upper surface 51, a lower surface 52, a first side surface 53, a second side surface 54, a front surface 55, and a rear surface 56. The base 50 has a plate shape and is formed of a hard material such as metal. The upper surface 51 is a surface fixed to the ceiling 101 by an adhesive or the like. The fixing strength at that time is such that the base 50 does not fall off from the ceiling 101 even when the accessory device 1 receives an external force due to impact during sudden braking or collision of the vehicle.

[0015] The following surface 52 is the surface on the opposite side of the upper surface 51. The first side surface 53 is the surface of the base 50 that is located between the lower surface 52 and the upper surface 51 and on the left side when viewed in FIG. 3. The first side surface 53 is inclined so as to be located more to the left as it approaches the lower surface 52. The second side surface 54 is the surface of the base 50 that is located between the lower surface 52 and the upper surface 51 and on the right side when viewed in FIG. 3. The second side surface 54 is arranged on the opposite side of the first side surface 53 in the base 50. The second side surface 54 is inclined so as to be located more to the right as it approaches the lower surface 52.

[0016] Thus, since the first side surface 53 and the second side surface 54 are inclined so as to move away from each other as they approach the lower surface 52, the length of the lower surface 52 in the left-right direction is longer than the length of the upper surface 51 in the left-right direction. Therefore, the first side surface 53 and the second side surface 54 are inclined so as to spread from the upper surface 51 toward the lower surface 52. The angle formed between the first side surface 53 and the upper surface 51 is the same as the angle formed between the second side surface 54 and the upper surface 51.

[0017] The front surface 55 is the surface of the base 50 that is located between the lower surface 52 and the upper surface 51 and on the front side. The rear surface 56 is the surface of the base 50 that is located between the lower surface 52 and the upper surface 51 and on the rear side.

[0018] Next, the first support member 4 assembled to the base 50 will be described. The first support member 4 corresponds to the in-vehicle accessory support member of the present invention. The first support member 4 is manufactured, for example, from aluminum. In this case, the first support member 4 may be manufactured by die casting. Note that the first support member 4 may be manufactured from a metal other than aluminum (such as magnesium or zinc), may be manufactured from an alloy such as an aluminum alloy, or may be manufactured from a resin (for example, a resin containing glass or carbon fiber). Thus, the first support member 4 is a rigid body. A rigid body means an object that does not deform when the first support member 4 is slidably assembled to the base 50.

[0019] The first support member 4 is formed in a longitudinal shape. Further, the first support member 4 has a shape symmetric with respect to a virtual plane S (see FIG. 3) whose normal faces the left - right direction B. The virtual plane S is located in the middle of the first support member 4 in the left - right direction B. The first support member 4 has a fitting portion 7 that fits into the base 50 at one end in the longitudinal direction and a connecting portion 15 that is connected to the second support member 5 at the other end in the longitudinal direction.

[0020] The fitting portion 7 is slidably assembled to the base 50 in the direction A1 shown in FIGS. 1 and 2. The fitting portion 7 is disposed at the upper end of the first support member 4. As shown in FIGS. 2 and 3, the fitting portion 7, in a state of being assembled to the base 50, has a bottom portion 8 facing the lower surface 52 of the base 50, a first opposing side wall 9 standing upright from the bottom portion 8 and facing the first side surface 53 of the base 50, a second opposing side wall 10 standing upright from the bottom portion 8 and facing the second side surface 54 of the base 50, and an opposing rear wall 11 standing upright from the bottom portion 8 and facing the rear surface 56 of the base 50. The fitting portion 7 surrounds the lower, left, right, and rear directions by the bottom portion 8, the first opposing side wall 9, the second opposing side wall 10, and the opposing rear wall 11, and forms an inner fitting space (in other words, a space for accommodating the base 50) that is open at the upper and front sides.

[0021] As shown in FIG. 3, the bottom portion 8 has two convex portions 8a, 8b arranged at intervals in the left - right direction B. The convex portions 8a, 8b are provided on the side of the inner space (fitting space) of the fitting portion 7. The convex portions 8a, 8b are formed to extend in the front - rear direction A. Specifically, they are continuously formed over the entire range from the front end (opening) to the rear end (opposing rear wall 11) of the fitting portion 7 in the front - rear direction A. The tips (upper ends) of the convex portions 8a, 8b are formed on a plane perpendicular to the virtual plane S. The tips of the convex portions 8a, 8b contact the lower surface 52 of the base 50.

[0022] The bottom 8 has an intermediate surface 8c between the convex portions 8a and 8b. The intermediate surface 8c is not in contact with the lower surface 52. Therefore, a gap is formed between the intermediate surface 8c and the lower surface 52. The intermediate surface 8c is formed as a plane slightly inclined with respect to the front end surfaces (upper surfaces) of the convex portions 8a and 8b. Specifically, the intermediate surface 8c is provided so as to be gradually positioned upward as it goes backward. In this way, by providing a gradient to the intermediate surface 8c, the mold for molding the first support member 4 can be easily removed from the first support member 4 after the molding of the first support member 4. The area and the left - right width of the intermediate surface 8c are larger than the area and the left - right width of the front end surface of the convex portion 8a, and larger than the area and the left - right width of the front end surface of the convex portion 8b, and larger than the area and the left - right width of the bottom surface of the first groove 8d (see FIG. 3) described later, and larger than the area and the left - right width of the bottom surface of the second groove 8e (see FIG. 3) described later.

[0023] As shown in FIG. 5, a through - hole 8f penetrating in the vertical direction is formed in the intermediate surface 8c. The through - hole 8f is a hole into which a bolt (not shown) is inserted. The bolt is inserted into the through - hole 8f from the lower side of the bottom 8 after the first support member 4 is assembled to the base 50. Then, the lower surface 52 of the base 50 is pressed by the tip of the bolt so that the first support member 4 does not move vertically, horizontally, or longitudinally. Thereby, the fixing between the base 50 and the first support member 4 can be strengthened, and it can be suppressed that the first support member 4 comes out backward A2 from the base 50. Note that instead of the bolt, a locking portion that locks to the assembled first support member 4 and prevents the first support member 4 from coming out backward A2 may be provided in the fitting portion 7.

[0024] The bottom 8 has grooves 8d and 8e formed continuously over the entire range from the front end to the rear end (rear wall 11) of the fitting portion 7 at both ends in the left - right direction. The grooves 8d and 8e are provided on the side of the inner space (fitting space) of the fitting portion 7. Also, the first groove 8d is provided at a position adjacent to the first opposing side wall 9, in other words, it is provided between the first opposing side wall 9 and the first convex portion 8a. The second groove 8e is provided at a position adjacent to the second opposing side wall 10, in other words, it is provided between the second opposing side wall 10 and the second convex portion 8b. The bottom surfaces of the grooves 8d and 8e are located below the tip surfaces of the convex portions 8a and 8b. The bottom surfaces of the grooves 8d and 8e are formed on a plane substantially parallel to the tip surfaces of the convex portions 8a and 8b (strictly speaking, a plane with a slight gradient with respect to the tip surfaces of the convex portions 8a and 8b in order to facilitate mold release during molding).

[0025] The thickness of the bottom surfaces of the grooves 8d and 8e in the vertical direction C has a plurality of thicknesses along the front - rear direction A. Specifically, in the cross - section of FIG. 3, the thickness of the bottom surfaces of the grooves 8d and 8e is smaller than that in the cross - sections of FIGS. 4 and 5. In the cross - section of FIG. 4, the thickness of the bottom surfaces of the grooves 8d and 8e is larger than that in the cross - section of FIG. 3 and smaller than that in the cross - section of FIG. 5. Thus, the portions 8g and 8h that form the thickness of the bottom surfaces of the grooves 8d and 8e in the cross - section of FIG. 3 are formed thinner than the portions 8i, 8j, 8k, and 8l that form the thickness of the bottom surfaces of the grooves 8d and 8e in the cross - sections of FIGS. 4 and 5. Also, the portions 8i and 8j that form the thickness of the bottom surfaces of the grooves 8d and 8e in the cross - section of FIG. 4 are formed thinner than the portions 8k and 8l that form the thickness of the bottom surfaces of the grooves 8d and 8e in the cross - section of FIG. 5. Also, the portions 8k and 8l that form the thickness of the bottom surfaces of the grooves 8d and 8e in the cross - section of FIG. 5 are formed thicker than the portions 8g, 8h, 8i, and 8j that form the thickness of the bottom surfaces of the grooves 8d and 8e in the cross - sections of FIGS. 3 and 4. Hereinafter, the portions 8g and 8h in FIG. 3 are referred to as thin - wall portions. The portions 8i and 8j in FIG. 4 are referred to as medium - wall portions. The portions 8k and 8l in FIG. 5 are referred to as thick - wall portions. The left - right width, depth, or the curvature of the corner R of the grooves 8d and 8e may be appropriately determined according to the target value of the breaking load of the fitting portion 7.

[0026] The thin portions 8g and 8h are the thinnest portions compared to other portions in the front-rear direction A. The thin portions 8g and 8h are set at positions where upper surface concave portions 16a1 and 17a1 (see FIGS. 1 and 3) in the recesses 16 and 17 described later are formed. The thin portions 8g and 8h are set at positions adjacent to the opposing side walls 9 and 10. Further, the thin portions 8g and 8h are set, for example, at positions closer to the rear end (opposing rear wall 11) than the front end (opening) of the fitting portion 7 in the front-rear direction A. The thin portions 8g and 8h are set at a portion in the left-right direction B. That is, the thin portions 8g and 8h are thinner than other portions (the thickness of the bottom portion 8 at the positions of the convex portions 8a and 8b and the intermediate surface 8c) in the left-right direction B. Furthermore, the thin portions 8g and 8h are thinner than the thickness of the minimum thickness portions of the side walls 9 and 10 of the fitting portion 7 in the left-right direction B (the thickness at the lower ends of the side walls 9 and 10).

[0027] The thin portions 8g and 8h may be formed in a shape symmetric with respect to a predetermined virtual plane S (see FIG. 3). That is, the thin portions 8g and 8h may be set to have the same thickness as each other, the same left-right width as each other, and the same position as each other in the front-rear direction A. The thin portions 8g and 8h are formed at positions and in a shape such that the thin portions 8g and 8h or the vicinity thereof can be broken when a predetermined impact load is applied to the mirror 2.

[0028] The medium-thickness portions 8i and 8j in FIG. 4 are set at positions where upper surface convex portions 16a2 and 17a2 (see FIGS. 1, 3, and 4) in the recesses 16 and 17 described later are formed. The thick portions 8k and 8l in FIG. 5 are set at positions where the recesses 16 and 17 are not formed in the front-rear direction A. The thick portions 8k and 8l are located in front A1 of the thin portions 8g and 8h and the medium-thickness portions 8i and 8j.

[0029] The first opposing side wall 9 stands upright upward from the left end of the bottom portion 8. The first opposing side wall 9 extends in the front-rear direction A. The rear end of the first opposing side wall 9 is connected to the left end of the opposing rear wall 11. The second opposing side wall 10 is provided on the opposite side of the first opposing side wall 9 with the inner space of the fitting portion 7 interposed therebetween. The second opposing side wall 10 stands upright upward from the right end of the bottom portion 8. The second opposing side wall 10 extends in the front-rear direction A. The rear end of the second opposing side wall 10 is connected to the right end of the opposing rear wall 11.

[0030] These opposing side walls 9 and 10 may be formed in a shape symmetric with respect to a predetermined virtual plane S (see FIG. 3). The opposing side walls 9 and 10 have a retaining shape that prevents the first support member 4 from coming out downward from the state where it is assembled to the base 50. Specifically, the right side surface 9a (the surface on the inner space side of the fitting portion 7) of the first opposing side wall 9 (see FIG. 3) is inclined so as to be positioned more to the left as it approaches the bottom portion 8, corresponding to the inclination of the first side surface 53 of the base 50. On the other hand, the left side surface (the surface on the opposite side of the inner space of the fitting portion 7) of the first opposing side wall 9 extends substantially perpendicular to the surface on the fitting space side of the bottom portion 8 without inclination. Therefore, the thickness of the first opposing side wall 9 in the left-right direction B is thinner at a portion closer to the bottom portion 8 than at a portion away from the bottom portion 8.

[0031] The left side surface 10a (the surface on the inner space side of the fitting portion 7) of the second opposing side wall 10 (see FIG. 3) is inclined so as to be positioned more to the right as it approaches the bottom portion 8, corresponding to the inclination of the second side surface 54 of the base 50. On the other hand, the right side surface (the surface on the opposite side of the inner space of the fitting portion 7) of the second opposing side wall 10 extends substantially perpendicular to the surface on the fitting space side of the bottom portion 8 without inclination. Therefore, the thickness of the second opposing side wall 10 in the left-right direction B is thinner at a portion closer to the bottom portion 8 than at a portion away from the bottom portion 8. In this way, the inclined surfaces on the fitting space side of the opposing side walls 9 and 10 function as a retaining portion that prevents the first support member 4 from coming out downward with respect to the base 50.

[0032] Note that the opposing side walls 9 and 10 may not have a thin-walled portion that is thinner than other portions in a part even if the distances from the bottom portion 8 are the same. That is, the outer surface or the inner surface of the opposing side walls 9 and 10 may not have a notch portion for forming a thin-walled portion. Also, as shown in FIG. 2, the interval between the inner surfaces 9a and 10a of the opposing side walls 9 and 10 becomes narrower as it goes toward the rear A2. Thereby, the first support member 4 is prevented from coming out forward A1 from the state where it is assembled to the base 50.

[0033] The rear wall 11 of the fitting portion 7 extends in the left - right direction B and is provided so as to connect between the left and right side walls 9 and 10. The rear wall 11 faces the rear surface 56 of the base 50 when assembled to the base 50. The rear wall 11 suppresses the opening of the side walls 9 and 10 in the left - right direction B.

[0034] As shown in FIGS. 1 to 4, the first support member 4 has a first side wall 12, a second side wall 13, and a rear wall 14. The first side wall 12 constitutes the left side surface of the first support member 4, and a part from the upper end constitutes the first opposed side wall 9 of the fitting portion 7. The second side wall 13 constitutes the side surface on the opposite side of the first side wall 12, that is, the right side surface of the first support member 4, and a part from the upper end constitutes the second opposed side wall 10 of the fitting portion 7. These side walls 12 and 13 are formed in a shape symmetric with respect to a predetermined virtual plane S (see FIG. 3), for example. Also, the side walls 12 and 13 have a shape that is long in the direction from the upper - side fitting portion 7 toward the lower - side connection portion 15. The longitudinal direction of the side walls 12 and 13 is set in a direction that is located more rearward A2 as it approaches downward, that is, in an oblique direction with respect to both the vertical direction C and the front - rear direction A.

[0035] The side walls 12 and 13 have recesses 16 and 17 below the side walls 9 and 10 of the fitting portion 7. One recess 16 (the first recess) is formed to be recessed in the right - hand direction B1 (see FIG. 3) at a position below the first opposed side wall 9 on the outer surface (left - hand side surface) of the first side wall 12 (in other words, below the upper surface of the bottom portion 8). The other recess 17 (the second recess) is formed to be recessed in the left - hand direction B2 (see FIG. 3) at a position below the second opposed side wall 10 on the outer surface (right - hand side surface) of the second side wall 13 (in other words, below the upper surface of the bottom portion 8). Thus, the recesses 16 and 17 are formed at positions spaced downward from the upper ends of the side walls 12 and 13. These recesses 16 and 17 are formed in a shape symmetric with respect to a predetermined virtual plane S (see FIG. 3), for example. The recesses 16 and 17 have a shape that is longer in the front - rear direction A than in the vertical direction C, for example.

[0036] The recesses 16 and 17 may be provided, for example, in a partial section in the front-rear direction A of the side walls 12 and 13. In this case, the recesses 16 and 17 may be provided at positions spaced rearward A2 from the front ends of the side walls 12 and 13, or may be provided at positions spaced forward A1 from the rear ends of the side walls 12 and 13.

[0037] The depth of the recesses 16 and 17 from the outer surfaces of the side walls 12 and 13 is, for example, greater than the distance from the outer surfaces to the grooves 8d and 8e of the bottom 8. Further, the depth of the recesses 16 and 17 from the outer surfaces of the side walls 12 and 13 is, for example, greater than the distance from the outer surfaces to the protrusions 8a and 8b of the bottom 8. Also, the end face 16b (see FIG. 3) in the depth direction of the first recess 16 and the end face 17b (see FIG. 3) in the depth direction of the second recess 17 are provided at intervals in the left-right direction B.

[0038] The first recess 16 is formed in a shape with an opening on the left direction B2 side and the sides other than the left direction B2 (i.e., the front-rear direction A, the up-down direction C, and the right direction B1) closed. The second recess 17 is formed in a shape with an opening on the right direction B1 side and the sides other than the right direction B1 (i.e., the front-rear direction A, the up-down direction C, and the left direction B2) closed. The recesses 16 and 17 form a substantially rectangular internal space when viewed in the cross-sections of FIGS. 3 and 4.

[0039] The inner surfaces of the recesses 16 and 17 have upper surfaces 16a and 17a that are relatively positioned upward compared to other portions of the inner surfaces. The upper surfaces 16a and 17a constitute the surfaces (i.e., the back surfaces of the bottom 8) on the opposite side of the fitting space of the bottom 8. The upper surfaces 16a and 17a are provided to form the thin-wall portions 8g and 8h and the medium-wall portions 8i and 8j. Specifically, the upper surfaces 16a and 17a are formed in an uneven shape along the front-rear direction A. That is, the upper surfaces 16a and 17a include upper surface recesses 16a1 and 17a1 that are recessed upward compared to other portions 16a2 and 17a2 of the upper surfaces 16a and 17a, and upper surface protrusions 16a2 and 17a2 that protrude downward compared to the upper surface recesses 16a1 and 17a1.

[0040] The upper concave portions 16a1 and 17a1 constitute the back surfaces of the above-mentioned thin portions 8g and 8h. The upper concave portions 16a1 and 17a1 are provided in a partial section of the upper surfaces 16a and 17a in the front-rear direction A. That is, in the present embodiment, the thin portions 8g and 8h are provided in a partial section of the concave portions 16 and 17 in the front-rear direction A. The upper concave portions 16a1 and 17a1 are provided, for example, in the left-right direction B across the entire section from the openings of the concave portions 16 and 17 to the bottom surfaces 16b and 17b. In this case, the upper concave portions 16a1 and 17a1 also constitute a part of the back surfaces of the convex portions 8a and 8b and the bottom 8 at the position of the intermediate surface 8c in addition to the back surfaces of the thin portions 8g and 8h.

[0041] The upper convex portions 16a2 and 17a2 constitute the back surfaces of the above-mentioned medium-thickness portions 8i and 8j. The upper convex portions 16a2 and 17a2 are provided in a partial section of the upper surfaces 16a and 17a in the front-rear direction A. In the present embodiment, the upper convex portions 16a2 and 17a2 are provided on both sides of the front side and the rear side of the upper concave portions 16a1 and 17a1 (see FIG. 1). The upper convex portions 16a2 and 17a2 are provided, for example, in the left-right direction B across the entire section from a position slightly inside the concave portions 16 and 17 from the openings of the concave portions 16 and 17 to the bottom surfaces 16b and 17b. In this case, the upper convex portions 16a2 and 17a2 also constitute a part of the back surfaces of the convex portions 8a and 8b and the bottom 8 at the position of the intermediate surface 8c in addition to the back surfaces of the medium-thickness portions 8i and 8j.

[0042] As shown in FIG. 3, the first support member 4 has an opposing portion 18 that faces the bottom 8 in the vertical direction C with the concave portions 16 and 17 interposed therebetween, and a connecting portion 19 that connects the bottom 8 and the opposing portion 18. The opposing portion 18 is provided so as to connect the first side wall 12 and the second side wall 13 in the left-right direction B. The connecting portion 19 is a portion between the bottom surface 16b of the first concave portion 16 and the bottom surface 17b of the second concave portion 17. The cross section of FIG. 3 is formed in a substantially H shape by the bottom 8, the opposing portion 18, and the connecting portion 19.

[0043] The rear wall 14 (see FIGS. 2 and 3) constitutes the wall surface of the first support member 4 on the rearward A2 side. The rear wall 14 is provided so as to connect between the rear ends of the first side wall 12 and the second side wall 13. A part from the upper end of the rear wall 14 constitutes the rear wall 11 of the fitting portion 7. The rear wall 14 is extended in an inclined direction so as to be located more rearward A2 as it goes downward. Below the concave portions 16 and 17 of the first support member 4, a space surrounded by the first side surface 12, the second side surface 13, the rear wall 14, and the opposing portion 18 is formed. This space is open at the front A1 and downward C2. By this space, the weight reduction of the first support member 4 can be achieved.

[0044] Hereinafter, the effects of the present embodiment will be described. For example, when the head of an occupant contacts the mirror 2 in a vehicle collision accident or the like, a moment with the base 50 as a fulcrum is applied to the accessory device 1. Due to this moment, a load tending to expand between the opposing side walls 9 and 10 is applied to the fitting portion 7. At this time, since the fitting portion 7 has thin-wall portions 8g and 8h that are thinner than the minimum wall thickness portions of the opposing side walls 9 and 10 at positions adjacent to the opposing side walls 9 and 10 of the bottom portion 8, the fitting portion 7 (for example, the side walls 9 and 10 or the bottom portion 8) can be broken starting from the thin-wall portions 8g and 8h or the vicinity thereof. Thereby, the mirror 2 and the support member 3 that supports it can be detached from the base 50. Thereby, the degree of injury to the head of the occupant can be reduced.

[0045] In addition, while the base 50 may use standard products of the same shape among a plurality of vehicle types, the design (outer shape) of the first support member 4 may be determined for each vehicle type. Even in this case, since the thin-wall portions 8g and 8h are set at the bottom portion 8 that is less likely to be restricted by the design of the first support member 4, it is possible to suppress the position and shape of the thin-wall portions 8g and 8h from greatly changing for each design of the first support member 4, and the design freedom for adjusting the breaking load of the fitting portion 7 can be increased. On the other hand, if thin-wall portions are set on the opposing side walls 9 and 10 as in Patent Document 1, due to the restrictions on the design of the first support member 4, the design freedom of the notch shape for setting the thin-wall portions formed on the outer surfaces of the opposing side walls 9 and 10 is small.

[0046] Since the thin portions 8g and 8h are provided, for example, at positions closer to the rear end than the front end of the fitting portion 7 in the front-rear direction A, it is possible to make the thin portions 8g and 8h or the vicinity thereof more easily destructible during impact. That is, the center of the rotational moment applied to the first support member 4 during impact is determined, for example, near the front end of the fitting portion 7, but by providing the thin portions 8g and 8h at positions away from the moment center, it is possible to easily destruct the thin portions 8g and 8h or the vicinity thereof.

[0047] Further, since the bottom portion 8 has a plurality of portions (thin portions 8g and 8h, medium-thickness portions 8i and 8j, and thick portions 8k and 8l) with different thicknesses along the front-rear direction A, it is easy to achieve both the resistance to shaking of the accessory device 1 during non-impact and the ease of dropping of the accessory device 1 during impact. Also, it is easier to further adjust the breaking load of the fitting portion 7. That is, for example, by increasing the range of the thin portions 8g and 8h and decreasing the range of the medium-thickness portions 8i and 8j, the breaking load of the fitting portion 7 can be decreased. Conversely, for example, by decreasing the range of the thin portions 8g and 8h and increasing the range of the medium-thickness portions 8i and 8j, the breaking load of the fitting portion 7 can be increased.

[0048] Among the side walls 12 and 13, the portions below the opposing side walls 9 and 10 of the fitting portion 7 have a larger area than the opposing side walls 9 and 10. And since the recesses 16 and 17 for forming the thin portions 8g and 8h and the medium-thickness portions 8i and 8j are formed in the portion having the large area, the degree of freedom in design for adjusting the breaking load of the fitting portion 7 can be further increased.

[0049] Also, by providing the recesses 16 and 17 deeper than the wall thickness (thickness in the left-right direction B) of the opposing side walls 9 and 10, the weight of the first support member 4 can be reduced.

[0050] Note that the present invention is not limited to the above-described embodiments, and various modifications are possible. FIG. 6 is a front view of a part of the first support member according to a modified example. In FIG. 6, the same parts as those in the above-described embodiment are denoted by the same reference numerals. The first support member 4A in FIG. 6 has a fitting portion 7A that is slidably assembled to a base (not shown) having the same shape as the above-described base 50. The rear wall 11A of the fitting portion 7A has slits 11a and 11b that are continuous with the inner surfaces 9a and 10a of the opposing side walls 9 and 10. The slits 11a and 11b are formed in a shape that is recessed downward from the upper end of the rear wall 11A and penetrates the rear wall 11A in the front-rear direction (a direction perpendicular to the plane of FIG. 6). The lower ends of the slits 11a and 11b are located above the lower ends of the opposing side walls 9 and 10. A part 11a1 and 11b1 of the edges of the slits 11a and 11b coincide with the inner surfaces 9a and 10a of the opposing side walls 9 and 10. Note that the slits 11a and 11b may be located slightly inside in the left-right direction with respect to the inner surfaces 9a and 10a of the opposing side walls 9 and 10. Even in this case, the slits 11a and 11b may be formed at a position closer to the inner surfaces 9a and 10a than the midpoint of the rear wall 11A in the left-right direction. The fitting portion 7A is the same as the above-described fitting portion 7 except that the slits 11a and 11b are formed. According to this, the slits 11a and 11b can easily open the space between the opposing side walls 9 and 10 during impact, and can easily break the fitting portion 7A.

[0051] In the above-described embodiment, an example is shown in which the upper surface convex portions 16a2 and 17a2 are formed on the upper surfaces 16a and 17a of the concave portions 16 and 17 to provide the thin-wall portions 8g and 8h and the medium-wall portions 8i and 8j. However, the present invention is not limited to this, and for example, the upper surface convex portions 16a2 and 17a2 may be eliminated, and the thin-wall portions 8g and 8h may be formed over the entire front-rear section of the concave portions 16 and 17. Further, the thickness of the thin-wall portions 8g and 8h may be 0, that is, the thin-wall portions 8g and 8h may be formed in a penetrating shape.

Description of Reference Numerals

[0052] 1 Vehicle-mounted accessory device 2 Mirror (vehicle interior accessory) 4, 4A First support member (vehicle-mounted accessory support member) 7, 7A fitting part 8 Bottom 9 First opposing side wall 10 Second opposing side wall 12 First side wall 13 Second side wall 16 First recess 17 Second recess 8g, 8h Thin-walled part 50 Base 51 Upper surface of the base 52 Lower surface of the base 53 First side surface of the base 54 Second side surface of the base

Claims

1. A member for supporting an accessory in a vehicle interior, comprising: a top surface fixed in the vehicle interior, a bottom surface opposite to the top surface, a first side surface disposed between the bottom surface and the top surface, and a second side surface disposed on the opposite side of the first side surface; a fitting portion that is slidably assembled while surrounding the first side surface, the bottom surface, and the second side surface with respect to a base; a first side wall; a second side wall provided on the opposite side of the first side wall; the fitting portion includes a bottom portion facing the bottom surface, a first opposing side wall standing upright from the bottom portion and facing the first side surface, and a second opposing side wall standing upright from the bottom portion and facing the second side surface; a part of the first side wall from the upper end constitutes the first opposing side wall, and has a first recess on the lower side of the first opposing side wall; a part of the second side wall from the upper end constitutes the second opposing side wall, and has a second recess on the lower side of the second opposing side wall; the bottom portion has a thin portion that is thinner than other portions in a front-rear direction parallel to the sliding assembly direction at a position adjacent to the first opposing side wall and the second opposing side wall; the first recess and the second recess are provided so as to form the thin portion; a vehicle-mounted accessory support member.

2. the bottom portion has a medium-thick portion that is thicker than the thin portion and a thick portion that is thicker than the medium-thick portion in a part of the front-rear direction at a position adjacent to the first opposing side wall and the second opposing side wall; the surfaces of the first recess and the second recess that constitute the back surface of the bottom portion have an uneven shape along the front-rear direction; the thin portion is provided at a position of a recess in the uneven shape; the medium-thick portion is provided at a position of a protrusion in the uneven shape; the thick portion is provided at a position in the front-rear direction where the first recess and the second recess are not formed. The vehicle-mounted accessory support member according to claim 1.

3. the fitting portion has a wall portion at one end in the front-rear direction; the wall portion has a slit substantially continuous with the inner surfaces of the first opposing side wall and the second opposing side wall. The vehicle-mounted accessory support member according to claim 1.

4. the thin portion is thinner than the minimum thickness portion of the first opposing side wall and the second opposing side wall. The vehicle-mounted accessory support member according to claim 1.

5. The cross-section cut along a plane perpendicular to the front-rear direction at the positions of the first recess and the second recess includes the bottom portion, an opposing portion that faces the bottom portion with the first recess and the second recess therebetween, and a connecting portion that is located between the first recess and the second recess and connects the bottom portion and the opposing portion. The in-vehicle accessory support member according to claim 1.

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