Holding structure of rear viewing device

Abstract

To provide a holding structure of a rear viewing device which can suppress vibration of the rear viewing device caused when a vehicle travels.SOLUTION: A holding structure of a room mirror 10 includes: a room mirror 10 for viewing an area behind a vehicle; a stay 20 in which one end is attached to the vehicle and the room mirror 10 is attached to the other end; a fixing part 30 which fixes the stay 20 to the vehicle. The fixing part 30 has: a first fixing member 40 fixed to the vehicle; and a second fixing member 50 which is made of a resin and used to fix the first fixing member 40 to the stay 20 with screws 32. The first fixing member 40 includes a housing recessed part 42 which is formed in the same shape as the second fixing member 50 to house the second fixing member 50. The second fixing member 50 includes: a base part 60 extending in a vehicle fore and aft direction; arm parts 70 extending from the base part 60 in a direction intersecting with the vehicle fore and aft direction; and screw arrangement holes 51 in each of which the screw 32 is disposed and a bottom part breaks when an impact is applied to the room mirror 10.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a holding structure for holding a rearview visual device such as a mirror or a monitor that is installed in a vehicle interior to visually view the area behind the vehicle. [Background technology]

[0002] A rearview device such as a mirror or a monitor is installed in the interior of a vehicle to view the rear of the vehicle. This rearview device is generally fixed and held in the interior of the vehicle via a stay on the ceiling of the vehicle compartment. That is, the rearview device is attached to one end of the stay, and the other end of the stay is fixed to the vehicle, thereby holding the rearview device in the vehicle compartment.

[0003] Such a holding structure for the rearview camera is provided with an impact reduction mechanism to protect the occupant when the occupant collides with the rearview camera. One of the impact reduction mechanisms, for example, is designed to prevent the occupant from being seriously injured when the occupant's head or the like collides with the rearview camera by causing the rearview camera and the stay to fall off from the fixed portion to the vehicle (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2001-080416 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned retaining structure for the rearview camera equipped with the shock mitigation mechanism, the stay to which the rearview camera is attached is fixed to the vehicle cabin ceiling via the shock mitigation mechanism, so that the vibration characteristics are poorer than when the rearview camera is directly fixed to the vehicle cabin ceiling, and the rearview camera is more likely to vibrate. In recent years, rearview cameras that project camera images onto a mirror surface have become popular. This type of rearview camera requires new components such as a display to project the camera images, and as a result, the weight of the rearview camera increases significantly.

[0006] As a result, the rearview device is more susceptible to vibrations caused by the vibrations generated in the vehicle while driving, causing problems such as blurred rear visibility. In other words, even if the vibrations of the rearview device are small, the mirror image (when the display is off) or camera image (when the display is on) of the rear view reflected therein appears to shake more the farther away it is, so the problem of blurring caused by vibration becomes more pronounced.

[0007] Therefore, the present disclosure has been made to solve the above-mentioned problems, and aims to provide a holding structure for a rearview camera that can suppress vibration of the rearview camera when the vehicle is traveling. [Means for solving the problem]

[0008] In order to solve the above problems, one aspect of the present disclosure is to A rear vision device for visually checking the rear of the vehicle; A stay having one end attached to a vehicle and the rear visibility device attached to the other end; A fixing portion that fixes the stay to a vehicle, The fixing portion is A first fixing member fixed to a vehicle; a second fixing member made of resin for fixing the first fixing member to the stay together with a screw, the first fixing member includes an accommodating recess formed in the same shape as the second fixing member for accommodating the second fixing member; The second fixing member is A base portion extending in a front-rear direction of the vehicle; An arm portion extending from the base portion in a direction intersecting the vehicle front-rear direction; The rear viewing device is characterized in that it is provided with a screw arrangement hole in which the screw is arranged and whose bottom portion breaks when an impact is applied to the rear viewing device.

[0009] In this holding structure for a rearview visual device, the second fixing member is accommodated in the accommodation recess of the first fixing member, and the second fixing member is fixed to the stay by a screw, thereby fixing the first fixing member to the stay together with the second fixing member. In other words, the first fixing member is not directly fixed to the stay by a screw, but is fixed via the second fixing member. Then, the stay to which the first fixing member and the second fixing member are attached is fixed to the vehicle by fixing the first fixing member to the vehicle.

[0010] The second fixing member is provided with a screw arrangement hole that acts as an impact reduction mechanism. That is, when an impact is applied to the rearview imaging device, the bottom part (screw seat) of the screw arrangement hole breaks, and the screw that fixes the stay comes out of the first fixing member together with the stay, and the stay and the rearview imaging device fall off the vehicle.

[0011] Therefore, the rearview device is easily vibrated by vibrations generated in the vehicle while it is traveling. Therefore, in this holding structure for the rearview device, the second fixing member has a base portion extending in the front-rear direction of the vehicle and an arm portion extending from the base portion in a direction intersecting the front-rear direction of the vehicle.

[0012] This improves the strength of the second fixing member in both the front-rear direction of the vehicle and the direction intersecting the front-rear direction. Therefore, the stay can be firmly fixed to the vehicle by the first fixing member and the second fixing member. Therefore, even if the rearview camera is equipped with an impact reduction mechanism, it is possible to suppress vibration of the rearview camera when the vehicle is traveling.

[0013] Here, the direction in which the arm of the second fixing member extends (is provided) is preferably perpendicular to the vehicle front-rear direction, because this makes it possible to effectively suppress vibrations in the direction perpendicular to the vehicle front-rear direction (vehicle left-right direction) in which the rearview device is likely to vibrate significantly.

[0014] In addition, a rib extending in a direction intersecting (preferably perpendicular to) the vehicle longitudinal direction may be provided on the arm of the second fixing member. By providing such a rib, the strength of the arm of the second fixing member in the direction intersecting with the vehicle longitudinal direction can be improved. Therefore, the effect of suppressing vibration of the rearview device in the direction intersecting with the vehicle longitudinal direction can be increased.

[0015] Furthermore, a reinforcing material may be provided on the arm portion of the second fixing member (including a part of the base portion (the part of the base portion sandwiched between the arm portions)). For example, the reinforcing material can be disposed by insert molding. The reinforcing material may be provided together with the above-mentioned rib, or may be provided alone without providing the rib.

[0016] By providing such a reinforcing member, the strength of the arm portion of the second fixing member in a direction intersecting with the vehicle front-rear direction can be further improved, thereby further increasing the effect of suppressing vibration of the rearview device in the direction intersecting with the vehicle front-rear direction.

[0017] In the above-mentioned rear view device holding structure, It is preferable that the angle of the side surface of the arm portion with respect to the side surface of the base portion is set to 90 degrees or more.The connecting (boundary) portion between the base portion and the arm portion is desirably R-shaped.

[0018] By forming the root portion of the arm in such a shape, it is possible to prevent stress concentration at the root portion of the arm. This makes it possible to improve the strength of the root portion of the arm, which is the most susceptible to damage (the most susceptible to load) in the second fixing member. Therefore, since the strength of the second fixing member in a direction intersecting the longitudinal direction of the vehicle can be improved, vibration of the rearview device in a direction intersecting the longitudinal direction of the vehicle can be effectively suppressed.

[0019] In any one of the above-mentioned rearview visual confirmation device holding structures, It is preferable that a protrusion be formed on a side surface of at least one end of the base portion or the arm portion, the protrusion being in contact with a side surface of the accommodating recess.

[0020] By providing such a protrusion, the second fixing member can be accommodated (fitted) into the side surface of the accommodation recess without rattling, thereby improving the vibration characteristics of the second fixing member. That is, by providing a protrusion on the end side surface of the base, the vibration characteristics of the second fixing member in the vehicle longitudinal direction can be improved, and by providing a protrusion on the end side surface of the arm, the vibration characteristics of the second fixing member in a direction intersecting the vehicle longitudinal direction can be improved. This improves the attachment strength of the stay to the vehicle by the first fixing member and the second fixing member, thereby further suppressing vibration of the rearview device when the vehicle is traveling.

[0021] Here, when providing a protrusion on the end side surface of the base, it is preferable to provide multiple protrusions. In this case, it is preferable to make the thickness (height) of the protrusion thicker (higher) on the outside than on the inside. This is because it is possible to further improve the vibration characteristics of the second fixing member in a direction intersecting with the vehicle front-rear direction.

[0022] In any one of the above-mentioned rearview visual confirmation device holding structures, It is preferable that a convex portion that comes into contact with the bottom surface of the accommodating recess is formed on a surface of the arm portion that faces the bottom surface of the accommodating recess.

[0023] By providing such a protrusion, the arm of the second fixing member can be accommodated in the bottom surface of the accommodation recess without rattling, and the vibration characteristics of the arm of the second fixing member can be further improved (made less susceptible to vibration). Therefore, vibration of the rearview device in a direction intersecting with the vehicle front-rear direction can be more effectively suppressed.

[0024] In any one of the above-mentioned holding devices, It is preferable that a groove is formed on the outer periphery of the bottom surface of the screw arrangement hole.

[0025] By providing such a groove, when an impact is applied to the rearview device and the bottom of the screw arrangement hole breaks, the break can be made to occur from the groove portion. As a result, regardless of the direction of the impact load, the bottom of the screw arrangement hole breaks cleanly along the groove, so that the stay and the rearview device can be reliably dropped off from the vehicle, thereby improving impact safety.

[0026] The cross-sectional shape of the groove is not particularly limited, and may be, for example, semicircular, V-shaped, rectangular, or the like. The cross-sectional shape does not need to be constant over the entire circumference of the groove, and may be changed (gradually changed) partially. For example, the width of the groove may be partially narrowed or the depth of the groove may be deepened. The groove may be provided partially, not over the entire circumference. This allows the second fixing member to maintain its earthquake resistance while always maintaining the position at which the screw arrangement hole begins to break when an impact load is applied to the rearview device, thereby improving impact safety. Effect of the Invention

[0027] According to the present disclosure, it is possible to provide a holding structure for a rearview imaging device that can suppress vibration of the rearview imaging device when the vehicle is traveling. [Brief description of the drawings]

[0028] [Figure 1] 1 is a schematic perspective view showing a rearview mirror holding structure according to an embodiment of the present invention; [Diagram 2] 2 is an exploded perspective view of a fixing portion in the rearview mirror holding structure according to the embodiment; FIG. [Diagram 3] FIG. 4 is a top view of a second fixing member. [Figure 4] FIG. 13 is a bottom view of the second fixing member. [Diagram 5] 4 is a cross-sectional view taken along line AA in FIG. [Figure 6] FIG. 13 is a view showing a second fixing member having ribs on its arm portion. [Figure 7] FIG. 13 is a diagram showing a state in which the stay has fallen off. [Figure 8] 13A and 13B are diagrams showing modified examples of grooves in screw arrangement holes. [Figure 9] 13A and 13B are diagrams showing modified examples of grooves in screw arrangement holes. [Figure 10] FIG. 13 is a diagram showing an example in which a plurality of protrusions are provided on a base portion. [Figure 11] 13A to 13C are diagrams showing modified examples of the shape of the protrusion. [Figure 12] 13A and 13B are diagrams showing modified examples of the second fixing member. [Figure 13] 13A and 13B are diagrams showing modified examples of the first fixing member. [Figure 14] 14 is a diagram showing a modified example of the second fixing member shown in FIG. 13. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] A holding structure for a rearview confirmation device according to an embodiment of the present disclosure will be described in detail with reference to the drawings. In this embodiment, a case where the present disclosure is applied to a rearview mirror that reflects a camera image on a mirror surface will be described. As shown in FIG. 1, the holding structure for the rearview mirror in this embodiment includes a rearview mirror 10, a stay 20 that supports the rearview mirror 10, and a fixing part 30 that fixes them to the ceiling of the vehicle compartment. In this disclosure, the front-rear direction and left-right direction of the vehicle mean the front-rear direction and left-right direction when looking in the forward direction of the vehicle.

[0030] As shown in FIG. 1, the rearview mirror 10 has a mirror section 11 for viewing the rear of the vehicle and a joint section 12 attached to the back of the mirror section 11. The rearview mirror 10 is an example of the "rearview device" of the present disclosure. The mirror section 11 has a mirror surface 13, on which a camera image or a reflected image is displayed. That is, the mirror section 11 has a half mirror that reflects a part of the incident light and transmits a part of it, and a display disposed on the back side of the half mirror. When the display is on, the camera image displayed on the display transmitted through the half mirror is visible, and when the display is off, a highly reflected image from the half mirror is visible.

[0031] The mirror unit 11 is rotatably attached to the stay 20 via the joint portion 12. This allows the angle of the mirror unit 11 to be adjusted relative to the stay 20.

[0032] The stay 20 is an arm-shaped support member, the tip side (mirror side) of which is curved into a U-shape, and the tip part is connected to the joint part 12. On the other hand, a triangular plate-shaped mounting bracket 21 is provided on the base end side (cabin ceiling side) of the stay 20 as shown in Fig. 2. The mounting bracket 21 is integrally formed with the stay 20. The mounting bracket 21 has three through holes 22, two screw holes 23, and three positioning protrusions 24 formed therein.

[0033] The through holes 22 are holes for inserting bolts 31 for fixing a first fixing member 40 (described later) to the passenger compartment ceiling. The through holes 22 are arranged near each vertex of the triangular mounting bracket 21. The screw holes 23 are threaded holes into which screws 32 for fixing the first fixing member 40 and the second fixing member 50 (described later) to the mounting bracket 21 are screwed. The screw holes 23 are arranged near the center of the mounting bracket 21 in the front-to-rear direction of the vehicle. The positioning protrusions 24 are protrusions for positioning the first fixing member 40 when fixing it to the mounting bracket 21. The positioning protrusions 24 are arranged between the through holes 22.

[0034] The stay 20 is fixed to the vehicle compartment ceiling via a fixing portion 30. The fixing portion 30 includes a first fixing member 40, a second fixing member 50, three bolts 31, and two screws 32.

[0035] The first fixing member 40 is a member having the same shape as the mounting bracket 21, and has bolt arrangement holes 41 formed near each vertex for arranging the bolts 31. The bolt arrangement holes 41 are provided so that their centers coincide with the centers of the through holes 22 of the mounting bracket 21 when the first fixing member 40 is arranged on the mounting bracket 21.

[0036] Further, the first fixing member 40 is formed with an accommodating recess 42 for accommodating the second fixing member 50. The accommodating recess 42 is a recess having the same shape as the second fixing member 50, and is adapted to accommodate the second fixing member 50 with a screw arrangement hole 51 of the second fixing member 50, which will be described later, exposed from the bottom surface. That is, the bottom surface of the accommodating recess 42 is open (penetrating) at a portion where the screw arrangement hole 51 of the second fixing member 50 is arranged. In this embodiment, the bottom surface of the accommodating recess 42 opens in a gourd shape.

[0037] The second fixing member 50 is a resin member for fixing the first fixing member 40 to the stay 20 together with the screw 32. The material of the second fixing member 50 is preferably a resin mixed with a reinforcing agent (e.g., PA66-CF30, PA66-GF50, PA6-GF30, POM-GF25, PBT-GF55, etc.). By using such a resin, the strength of the second fixing member 50 can be improved.

[0038] The second fixing member 50 includes a base 60 extending in the vehicle longitudinal direction, and a pair of arms 70, 70 extending from the base 60 in a direction intersecting the vehicle longitudinal direction (in this embodiment, a direction perpendicular to the vehicle longitudinal direction: the vehicle transverse direction). In other words, the second fixing member 50 forms a cross shape that is symmetrical with respect to the center line of the base 60. This can improve the strength of the second fixing member 50 in the vehicle longitudinal direction and the transverse direction.

[0039] 3, in the second fixing member 50, angles θ1, θ2 of the side surface of the arm 70 relative to the side surface of the base 60 are 90 degrees or more. Also, the boundary portion between the base 60 and the arm 70 (the base portion of the arm 70) is rounded. This makes it possible to prevent stress concentration from occurring at the base portion of the arm 70, thereby improving the strength of the base portion of the arm 70, which is most susceptible to damage in the second fixing member 50.

[0040] Furthermore, protrusions 61 and 71 are formed on the side surfaces of the ends of the base 60 and the arm 70, respectively. When the second fixing member 50 is placed in the accommodating recess 42, these protrusions 61, 71 elastically deform to come into contact with the side surfaces of the accommodating recess 42. Therefore, when the second fixing member 50 is accommodated in the accommodating recess 42, it can be accommodated (fitted) without any rattling.

[0041] 4, a protrusion 72 is formed on the lower surface 70a of the arm 70 (the surface facing the bottom surface of the accommodating recess 42). This protrusion 72 comes into contact with the bottom surface of the accommodating recess 42 when the second fixing member 50 is placed in the accommodating recess 42. Therefore, when the second fixing member 50 is accommodated in the accommodating recess 42, the arm 70 can be accommodated without rattling against the bottom surface of the accommodating recess 42, making it possible to make the arm 70 less likely to bend.

[0042] 3 and 5, the screw arrangement holes 51 are holes in which the screws 32 for fixing the first fixing member 40 and the second fixing member 50 to the stay 20 are arranged, and are composed of a circular recess 51a in which the head of the screw 32 is arranged, and a through hole 51b in which the threaded portion of the screw 32 is inserted. The screw arrangement holes 51 are formed near both ends of the base 60, and are arranged at positions where their centers coincide with the centers of the screw holes 23 when the first fixing member 40 with the second fixing member 50 installed thereon is arranged on the mounting bracket 21 of the stay 20.

[0043] A groove 52 is formed on the outer periphery of the bottom surface of this screw arrangement hole 51. The groove 52 is an annular groove formed around the entire outer periphery of the bottom surface of the screw arrangement hole 51. In this embodiment, as shown in Fig. 5, the cross-sectional shape of the groove 52 is semicircular, but the cross-sectional shape is not particularly limited and may be, for example, V-shaped or rectangular. By providing such a groove 52, when an impact is applied to the stay 20 (rear-view mirror 10) and the bottom of the screw arrangement hole 51 breaks, the break can be caused along the groove 52.

[0044] As shown in FIG. 6, a rib 75 extending in the left-right direction of the vehicle can be provided on arm portion 70 of second fixing member 50 (including part of base portion 60 (the portion of base portion 60 sandwiched between arm portions 70)). Rib 75 may be integrally formed when second fixing member 50 is manufactured. By providing such a rib 75 on arm portion 70, the strength of arm portion 70 in the left-right direction of the vehicle can be further improved.

[0045] In addition, a reinforcing material (such as a metal plate) may be provided on the arm portion 70 of the second fixing member 50 (including a part of the base portion 60 (the part of the base portion 60 that is sandwiched between the arm portion 70)). For example, the reinforcing material can be disposed in the second fixing member 50 by insert molding. The reinforcing material may be provided together with the above-mentioned rib 75, or may be provided alone without providing the rib 75. By providing such a reinforcing material, the strength of the arm portion 70 of the second fixing member 50 in the left-right direction of the vehicle can be further improved.

[0046] Here, the procedure for fixing the stay 20 (mounting bracket 21) to the indoor ceiling will be described with reference to Fig. 2. First, the second fixing member 50 is placed in the accommodation recess 42 of the first fixing member 40. At this time, the second fixing member 50 can be accommodated in the accommodation recess 42 without rattling against the side and bottom surfaces thereof due to the protrusions 61, 71 and the convex portion 72. In other words, the second fixing member 50 can be integrated with the first fixing member 40.

[0047] Next, the integrated first fixing member 40 and second fixing member 50 are placed on the mounting bracket 21 of the stay 20. At this time, the positioning holes formed on the lower surface of the first fixing member 40 are fitted into the positioning protrusions 24 of the mounting bracket 21, thereby aligning the first fixing member 40 with the mounting bracket 21.

[0048] Next, the screw 32 is placed in the screw placement hole 51 of the second fixing member 50, and the screw 32 is screwed into the screw hole 23 of the mounting bracket 21 and tightened. As a result, the second fixing member 50 and the first fixing member 40 are fixed to the stay 20 by the screw 32. In other words, the first fixing member 40 is fixed to the stay 20 via the second fixing member 50.

[0049] Finally, the bolt 31 is inserted through the through hole 22 of the mounting bracket 21 and disposed in the bolt disposition hole 41 of the first fixing member 40. Then, the bolt 31 is screwed into a bolt hole provided on the passenger compartment ceiling side and tightened, whereby the stay 20 is fixed to the passenger compartment ceiling by the bolt 31 via the first fixing member 40 and the second fixing member 50.

[0050] The holding structure of the rearview mirror 10 of this embodiment is provided with an impact reduction mechanism for reducing the impact received by the occupant when the head of the occupant collides with the rearview mirror 10 and the rearview mirror 10 is subjected to an impact. Specifically, when an impact load F (see FIG. 1) is applied to the rearview mirror 10, the impact load F acts on the screw 32 fixed to the stay 20 via the stay 20. Therefore, the bottom of the screw arrangement hole 51 in which the screw 32 is arranged breaks. Since the screw arrangement hole 51 is exposed from the bottom surface of the accommodation recess 42 formed in the first fixing member 40, when the bottom surface of the screw arrangement hole 51 breaks, the screw 32 falls off from the first fixing member 40 and the second fixing member 50 together with the stay 20, as shown in FIG. 7. Meanwhile, the first fixing member 40 and the second fixing member 50 (in a state in which the bottom of the screw arrangement hole 51 has come out) remain fixed to the indoor ceiling by the bolt 31. In this way, the impact reduction mechanism allows the stay 20 and the rearview mirror 10 to fall off from the passenger compartment ceiling while the first fixing member 40 and the second fixing member 50 remain fixed to the passenger compartment ceiling, thereby mitigating the impact received by the occupants.

[0051] In this embodiment, since the groove 52 is formed on the outer periphery of the bottom surface of the screw arrangement hole 51, the breakage at the bottom of the screw arrangement hole 51 can occur along the groove 52. Therefore, regardless of the direction of the impact load F applied to the rearview mirror 10 and the stay 20, the bottom surface of the screw arrangement hole 51 can be neatly broken along the groove 52. Therefore, the stay 20 and the rearview mirror 10 can be reliably dropped from the passenger compartment ceiling, thereby improving impact safety.

[0052] In this embodiment, the cross-sectional shape of the groove 52 is constant around the entire circumference, but the cross-sectional shape may be changed (gradually changed) partially. For example, as shown in FIG. 8, the width of the groove 52 may be made partially narrow. Alternatively, the depth of the groove 52 may be made partially deeper. Also, as shown in FIG. 9, the groove 52 may be formed only on a part of the outer periphery of the bottom surface of the screw arrangement hole 51. This allows the position at which the screw arrangement hole 51 starts to break to be constant while maintaining the strength (earthquake resistance) of the second fixing member 50, thereby further improving impact safety.

[0053] Here, the holding structure equipped with the shock absorbing mechanism as described above has poor vibration characteristics compared to a case where the mirror is directly fixed to the ceiling of the vehicle compartment, and the rearview mirror 10 is prone to vibration. The rearview mirror 10 is equipped with a display for displaying camera images, etc., and its weight has increased significantly. Therefore, the rearview mirror 10 is more likely to vibrate due to vibrations generated in the vehicle while driving, causing a problem that the rear view becomes blurred and difficult to see.

[0054] Therefore, in this embodiment, the second fixing member 50 is formed in a cross shape having a base 60 extending in the front-rear direction of the vehicle and a pair of arms 70 extending in the left-right direction of the vehicle. Therefore, the strength of the second fixing member 50 in the front-rear direction and the left-right direction of the vehicle can be improved. Therefore, the stay 20 can be firmly fixed to the passenger compartment ceiling by the first fixing member 40 and the second fixing member 50. Therefore, even if the shock mitigation mechanism is provided, the vibration of the rearview mirror 10 during vehicle travel can be suppressed.

[0055] In addition, at the base portion (boundary portion between the base portion 60 and the arm portion 70) of the second fixing member 50, the angles θ1, θ2 of the side surface of the arm portion 70 relative to the side surface of the base portion 60 are 90 degrees or more, forming an R-shape, so that stress concentration is unlikely to occur at the base portion of the arm portion 70. Therefore, it is possible to improve the strength of the base portion of the arm portion 70, which is most susceptible to damage (easily subjected to load) in the second fixing member 50. This improves the strength of the second fixing member 50 in the left-right direction of the vehicle, and therefore it is possible to effectively suppress vibrations in the left-right direction of the vehicle, which tend to cause large vibrations of the rearview mirror 10.

[0056] Furthermore, if at least one of a rib 75 or a reinforcing material is provided on the arm portion 70 of the second fixing member 50, the strength of the arm portion 70 can be further improved, thereby further increasing the vibration suppression effect of the rearview mirror 10 in the left-right direction of the vehicle.

[0057] In addition, in the second fixing member 50, the end side surfaces of the base 60 and the arm 70 are formed with protrusions 61 and 71 that come into contact with the side surfaces of the accommodation recess 42. Therefore, the second fixing member 50 can be accommodated (fitted) into the side surfaces of the accommodation recess 42 without rattling, and the vibration characteristics of the second fixing member 50 can be improved (made less susceptible to vibration). That is, by providing the protrusion 61 on the end side surface of the base 60, the vibration characteristics of the second fixing member 50 in the vehicle front-rear direction can be improved, and by providing the protrusion 71 on the end side surface of the arm 70, the vibration characteristics of the second fixing member 50 in the vehicle left-right direction can be improved. As a result, the mounting strength of the stay 20 to the passenger compartment ceiling by the first fixing member 40 and the second fixing member 50 is improved, and therefore the vibration of the rearview mirror 10 during vehicle travel can be effectively suppressed.

[0058] Here, when providing the protrusion 61 on the end side surface of the base 60, a plurality of protrusions 61 (two in FIG. 10) may be provided as shown in Fig. 10. In this case, it is preferable to make the thickness (height) of the protrusion 61 thicker (higher) on the outer side (side surface) than on the inner side (center side) as shown in Fig. 11. This is because it is possible to further improve the vibration characteristics of the second fixing member 50 in the left-right direction of the vehicle.

[0059] Furthermore, in the second fixing member 50, a convex portion 72 that comes into contact with the bottom surface of the accommodating recess 42 is formed on the surface (lower surface) of the arm portion 70 that faces the bottom surface of the accommodating recess 42. Therefore, the arm portion 70 of the second fixing member 50 can be accommodated in the bottom surface of the accommodating recess 42 without any rattling, and the vibration characteristics of the arm portion 70 can be further improved (made less susceptible to vibration). Therefore, vibrations in the left-right direction of the vehicle, which tend to cause large vibrations of the rearview mirror 10, can be more effectively suppressed.

[0060] Furthermore, in the second fixing member 50, a groove 52 is formed on the outer periphery of the bottom surface of the screw arrangement hole 51. Therefore, when an impact load F is applied to the rearview mirror 10, the screw arrangement hole 51 can be broken at the portion of the groove 52. As a result, regardless of the direction in which the impact load F acts, the bottom surface of the screw arrangement hole 51 breaks cleanly along the groove 52, so that the stay 20 and the rearview mirror 10 can be reliably dropped off from the passenger compartment ceiling, thereby improving impact safety.

[0061] As described above, according to the holding structure of the rearview mirror 10 of this embodiment, the second fixing member 50 that functions as an impact reduction mechanism is formed in a cross shape having a base 60 extending in the front-rear direction of the vehicle and an arm 70 extending in the left-right direction of the vehicle. This improves the strength of the second fixing member 50 in the front-rear direction and the left-right direction of the vehicle, so that the stay 20 can be firmly fixed to the passenger compartment ceiling by the first fixing member 40 and the second fixing member 50. Therefore, even if the impact reduction mechanism is provided, it is possible to suppress vibration of the rearview mirror 10 when the vehicle is traveling.

[0062] The above embodiment is merely an example, does not limit the present disclosure, and various improvements and modifications are possible within the scope of the present disclosure. For example, in the above embodiment, a cross-shaped second fixing member 50 is exemplified, but the shape of the second fixing member 50 is not particularly limited, and it can be T-shaped, for example, as shown in FIG. 12. In this case, the shape of the accommodation recess 42 of the first fixing member 40 needs to be changed to match the shape of the second fixing member 50. In addition, when the second fixing member 50 is T-shaped, a total of three screw arrangement holes 51 can be provided by arranging the screw arrangement holes 51 in each arm 70. This can further improve the vibration characteristics of the arm 70 (make it less likely to vibrate), and can further enhance the vibration suppression effect in the left-right direction of the vehicle, where the vibration of the rearview mirror 10 is likely to increase.

[0063] When the second fixing member 50 is formed in a T-shape, the screw arrangement holes 51 can be arranged side by side in the arm portion 70. That is, three screw arrangement holes 51 can be arranged in the second fixing member 50. This allows the stay 20 to be fixed to the passenger compartment ceiling via the first fixing member 40 and the second fixing member 50 by the two screws 32 in the left-right direction of the vehicle. Therefore, vibration of the rearview mirror 10 in the left-right direction of the vehicle while the vehicle is traveling can be further suppressed.

[0064] In addition, in the above embodiment, a triangular first fixing member 40 is exemplified, but the shape of the first fixing member 40 is determined by the vehicle specifications and is not limited to a triangular shape, and may be, for example, a rectangular shape as shown in Figures 13 and 14. When the first fixing member 40 is thus rectangular, the second fixing member 50 may be T-shaped and two (see Figure 13) or three (see Figure 14) screw arrangement holes 51 may be provided.

[0065] Further, in the above embodiment, the case where the rearview mirror 10 is used as the rearview visual device is illustrated, but the present disclosure can also be applied to a case where a monitor is used as the rearview visual device, such as in a large vehicle. [Explanation of symbols]

[0066] 10. Rearview Mirror 20 Stay 30 Fixed part 31 Volts 32 Screw 40 First fixing member 42 Recessed portion 50 Second fixing member 51 Screw placement holes 52 Groove 60 base 61 Protrusion 70 Arm 71 Protrusion 72 Convex F Impact load θ1 The angle between the side of the base and the side of the arm at the base of the arm θ2 The angle between the side of the base and the side of the arm at the base of the arm

Claims

1. A rear vision device for visually checking the rear of the vehicle; A stay having one end attached to a vehicle and the rear visibility device attached to the other end; A fixing portion that fixes the stay to a vehicle, The fixing portion is A first fixing member fixed to a vehicle; a second fixing member made of resin for fixing the first fixing member to the stay together with a screw, the first fixing member includes an accommodating recess formed in the same shape as the second fixing member for accommodating the second fixing member; The second fixing member is A base portion extending in a front-rear direction of the vehicle; An arm portion extending from the base portion in a direction intersecting the vehicle front-rear direction; a screw arrangement hole in which the screw is arranged and whose bottom portion breaks when an impact is applied to the rear viewing device; A holding structure for a rear visibility device.

2. The holding structure for a rearview device according to claim 1, The angle of the side surface of the arm portion with respect to the side surface of the base portion is set to 90 degrees or more. A holding structure for a rear visibility device.

3. The holding structure for a rearview device according to claim 1 or 2, A protrusion that comes into contact with a side surface of the receiving recess is formed on a side surface of at least one of the end portions of the base portion or the arm portion. A holding structure for a rear visibility device.

4. The holding structure for a rearview device according to claim 1 or 2, A convex portion that comes into contact with the bottom surface of the accommodating recess is formed on a surface of the arm portion that faces the bottom surface of the accommodating recess. A holding structure for a rear visibility device.

5. The holding structure for a rearview device according to claim 1 or 2, A groove is formed on the outer periphery of the bottom surface of the screw arrangement hole. A holding structure for a rear visibility device.

Images