rearview mirror structure

Abstract

To provide a rear-view mirror structure that is able to facilitate a fastening task for holding a spherical body for tilting a mirror.SOLUTION: A ball stud 28 of a mirror stay 27 is inserted between a mirror holder 12 and a front cover 16. A spherical body 28a of the ball stud 28 is rotatably held by a retainer 21 fastened to the mirror holder 12. The mirror holder 12 includes a holder-side recess 13. The retainer 21 includes a retainer-side recess 22 facing the holder-side recess 13. The retainer 21 and the mirror holder 12 are fastened by a bolt B1 and a nut N1, so that the spherical body 28a is held by the holder-side recess 13 and the retainer-side recess 22. The bolt B1 and the nut N1 fastening the retainer 21 and the mirror holder 12 are fastened via a collar K1 through which the bolt B1 is inserted.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a rearview mirror structure. [Background technology]

[0002] For example, Patent Documents 1 and 2 disclose a rearview mirror structure in which the outer periphery of the mirror body is held on the outer periphery of the mirror holder, and a ball stud sphere is provided at the tip of the mirror stay, and this sphere is clamped and held on the mirror holder side, making the mirror holder tiltable and allowing the angle of the mirror surface to be adjusted. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Unexamined Utility Model No. 59-85747 [Patent Document 2] Utility Model Registration No. 3217217 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned Patent Document 1, a clamping part is provided that is fastened to the mirror holder on one of the left and right sides of the sphere, but because the clamping part is cantilevered, it takes time to adjust the sphere holding force when assembling and holding the rearview mirror.In Patent Document 2, a clamping part is provided that is fastened to the mirror holder at three points around the sphere, which also requires a lot of labor to assemble the rearview mirror.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a rearview mirror structure that can facilitate the fastening work for holding a spherical body for tilting the mirror. [Means for solving the problem]

[0006] As a means for solving the above problem, a first aspect of the present invention provides a rearview mirror (10L, 10R) structure including a mirror body (11) that forms a mirror surface (11a), a mirror holder (12) that holds the mirror body (11), a front cover (16) that covers the mirror holder (12) from the side opposite to the mirror body (11), and a mirror stay (27) that supports a mirror assembly (19) including the mirror body (11), the mirror holder (12), and the front cover (16) on a vehicle body, wherein a ball stud (28) located at the tip of the mirror stay (27) is inserted into a space (A1) between the mirror holder (12) and the front cover (16), and a sphere (28a) of the ball stud (28) is rotatably held within the space (A1) by a retainer (21) that is fastened to the mirror holder (12), The mirror holder (12) has a holder-side recess (13) into which the sphere (28a) is fitted, and the retainer (21) has a retainer-side recess (22) that faces the holder-side recess (13) and into which the sphere (28a) is fitted. The sphere (28a) is sandwiched between the holder-side recess (13) and the retainer-side recess (22). The retainer (21) and the mirror holder (12) are fastened together with a bolt (B1) and a nut (N1), thereby holding the sphere (28a) between the holder-side recess (13) and the retainer-side recess (22). The bolt (B1) and nut (N1) that fasten the retainer (21) and the mirror holder (12) together are tightened via a collar (K1) that passes through the bolt (B1).

[0007] With this configuration, the bolt and nut that clamp the sphere of the ball stud of the mirror stay are tightened via the collar, so the fastening force of the bolt and nut is received by the collar, and the relative position (distance) between the holder-side recess and the retainer-side recess can be set to a specified value. In other words, the sphere can be clamped with a specified force simply by tightening the bolt and nut. This simplifies the retainer tightening process and makes it easier to manufacture and maintain the rearview mirror.

[0008] In a second aspect of the present invention, in the first aspect described above, the bolt fastening portions (25a, 25b) using the bolt (B1) and the nut (N1) are provided on both sides of the sphere (28a) in a first direction (vehicle width direction) when viewed from the fastening direction, and the first fastening portion (25b) provided on one side of the sphere (28a) in the first direction abuts the retainer (21) against the mirror holder (12) while the bolt (B1) and the nut (N1) are fastened via the collar (K1) at the first fastening portion (25b), and the second fastening portion (25a) provided on the other side of the sphere (28a) in the first direction abuts the retainer (21) against the mirror holder (12), and the bolt (B1) and the nut (N1) are fastened without the collar (K1) at the second fastening portion (25a), and the bolt (B1) and the nut (N1) are fastened without the collar (K1) at the second fastening portion (25a), and the second fastening portion (25a) provided on the other side of the sphere (28a) in the first direction abuts the mirror holder (12) against the retainer (21).

[0009] With this configuration, one of the pair of fastening parts that sandwich the sphere has a bolt and nut fastened via a collar, and the mirror holder and retainer abut against each other, making it possible to fix the holder-side recess and the retainer-side recess at a specified relative position (spacing) while avoiding the application of excessive fastening force to the mirror holder and retainer. The other of the pair of fastening parts has a bolt and nut fastened without a collar, but by separating the mirror holder and retainer from each other, it is possible to easily adjust the force that clamps the sphere by increasing or decreasing the amount that the bolt and nut are fastened, while avoiding the generation of excessive fastening force due to the tightening of the bolt and nut.

[0010] In a third aspect of the present invention, in the second aspect, the first direction is the vehicle width direction, the first fastening portion (25b) is provided on the outer side in the vehicle width direction, and the second fastening portion (25a) is provided on the inner side in the vehicle width direction. According to this configuration, the fastening portion that is firmly fastened via the collar is positioned on the outer side in the vehicle width direction, thereby strengthening the fixing force of the mirror assembly on the outer side in the vehicle width direction. Therefore, even if an unintended external force is applied to the outer side in the vehicle width direction of the mirror assembly, the mirror assembly is less likely to tilt or rotate. On the other hand, the fastening portion that is fastened with a gap without using a collar is positioned on the inner side in the vehicle width direction, making it easier for the mirror assembly to be moved by force from the inner side in the vehicle width direction. This makes it easier for the user to operate the mirror assembly from the inner side in the vehicle width direction to adjust the angle, etc. In other words, it is possible to make it easier for the user to adjust the angle of the mirror assembly while suppressing movement of the mirror assembly due to external force from the outer side in the vehicle width direction.

[0011] A fourth aspect of the present invention is applied to bar-end type rearview mirrors (10L, 10R) attached to the outer ends (2b) of the left and right grip portions (2aL, 2aR) of the steering handle (2) of a saddle-ride type vehicle (1) in the third aspect. With this configuration, when applied to a bar-end type rearview mirror, the mirror assembly, which tends to protrude outward in the vehicle width direction, is less likely to tilt or rotate when an external force is applied to the outside in the vehicle width direction, and angle adjustments can be easily made by operating from the inside in the vehicle width direction. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a rearview mirror structure that can facilitate the fastening work for holding a spherical body for tilting the mirror. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a front view of a saddle-ride type vehicle according to an embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view of a grip portion and a rearview mirror on the right side of the vehicle body of the saddle-ride type vehicle. [Figure 3] FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2. [Figure 4] FIG. 2 is a side view of the rearview mirror on the right side of the vehicle body, as viewed from the right side in the axial direction of the grip portion. [Figure 5] FIG. 2 is a front view of the rearview mirror on the right side of the vehicle body, as viewed from the front in a direction perpendicular to the axial direction of the grip portion. [Figure 6] 6 is a cross-sectional view taken along the line VI-VI in FIG. 4. [Figure 7] FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. 6. [Figure 8] FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 6. [Figure 9] FIG. 2 is a rear view of the mirror holder of the rearview mirror as seen from the rear in the normal direction. [Figure 10] FIG. 2 is a front view of the mirror holder as seen from the front side in the normal direction. [Figure 11] FIG. 2 is a rear view of the front cover of the rearview mirror as seen from the rear in the normal direction. [Figure 12] FIG. 2 is a perspective view of the mirror holder as seen from the rear side. [Figure 13] FIG. 2 is a perspective view of the mirror holder as seen from the front side. [Figure 14] FIG. 2 is a perspective view of the lower part of the front cover as viewed from below. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, directions such as front, rear, left, and right are the same as directions in the vehicle described below unless otherwise specified. In addition, in the drawings used in the following description, an arrow FR indicating the front of the vehicle, an arrow LH indicating the left side of the vehicle, an arrow UP indicating the top of the vehicle, and a line CL indicating the center of the left and right sides of the vehicle body are shown in appropriate positions. In the following explanation, it is assumed that the vehicle body is not tilting left or right, is at a standstill with a steering angle of 0 degrees, and is in an empty 1G state on a horizontal plane. The term "middle" used in this embodiment means not only the center between both ends of an object, but also the range inside between both ends of an object.

[0015] FIG. 1 is a front view of a saddle-ride type vehicle (for example, a motorcycle) 1 according to an embodiment. As shown in Fig. 1, a saddle-ride type vehicle 1 is equipped with a bar-type steering handle 2 for steering the front wheels (steered wheels). Bar-end type rearview mirrors 10L, 10R are attached to the outer ends 2b of left and right grip portions 2aL, 2aR of the handle 2 in the vehicle width direction (left and right direction of the vehicle).

[0016] Fig. 2 is a perspective view of the grip portion 2aR and rearview mirror 10R on the right side of the vehicle body. Fig. 3 is a cross-sectional view taken along line III-III in Fig. 2. Fig. 4 is a side view of the rearview mirror 10R on the right side of the vehicle body, seen from the right side in the axial direction of the grip portion 2aR. Fig. 5 is a front view of the rearview mirror 10R on the right side of the vehicle body, seen from the front side in a direction perpendicular to the axial direction of the grip portion 2aR. The following description will be given with reference to the rearview mirror 10R on the right side of the vehicle, but the rearview mirror 10L on the left side of the vehicle has a symmetrical configuration. In the figure, line C1 indicates the central axis of the grip portion 2aR, and symbol 2c indicates the throttle sleeve attached to the grip portion 2aR on the right side of the vehicle.

[0017] 2 to 5, rearview mirror 10R is a bar end mirror that can be attached to a bar end (an outer end in the vehicle width direction) 2b of a grip portion 2aR of a handlebar 2 of a saddle-ride type vehicle 1. Rearview mirror 10R includes a mirror main body (mirror body) 11 that forms a mirror surface 11a, a mirror holder 12 that has a frame portion 12a that holds an outer peripheral edge 11b of mirror body 11, a mirror stay 27 that supports, at its tip, a mirror assembly 19 including mirror body 11 and mirror holder 12, and a mirror fixing device 31 that supports a base end portion 27b of mirror stay 27 and is fixed inside grip portion 2aR.

[0018] Fig. 6 is a cross-sectional view taken along line VI-VI in Fig. 4. Fig. 7 is a cross-sectional view taken along line VII-VII in Fig. 6. Fig. 8 is a cross-sectional view taken along line VIII-VIII in Fig. 6. 6 to 8, the base end 27b of the mirror stay 27 is formed in a cylindrical shape with a bottom that is coaxial with the grip portion 2aR. A bolt insertion hole is formed in the center of the bottom of the base end 27b, through which a stay fixing bolt 33 is inserted from the outer side in the vehicle width direction. The mirror stay 27 includes the base end 27b, an arm portion 27c that is integrally formed above the base end 27b and extends upward, and a ball stud 28 that is fixed by screwing a screw shaft 28c into the upper end of the arm portion 27c.

[0019] A cylindrical handle weight 32 included in a mirror fixing device 31 is fixed, for example, by welding, to the interior of the grip portion 2aR on the outer side in the vehicle width direction. The mirror fixing device 31 is equipped with an adapter 34 that is fixed by threading a screw shaft 34a into a screw hole 32a formed on the inner periphery of the handle weight 32. The adapter 34 is in the shape of a bolt with an enlarged diameter portion (head) 34b that has a hexagonal cross section. The adapter 34 is fixed by tightening the screw shaft 34a, which forms the neck portion, into the handle weight 32 via a cylindrical spacer (collar) K1.

[0020] A cylindrical nut portion 34c is integrally formed on the vehicle width directional outer side of the expanded diameter portion 34b of the adapter 34. A bag-shaped nut hole 34d that opens outward in the vehicle width direction is coaxially formed in the range from the nut portion 34c to the expanded diameter portion 34b. A stay fixing bolt 33 that passes through the base end portion 27b of the mirror stay 27 is screwed into this nut hole 34d from the vehicle width directional outer side.

[0021] The screw shaft 34a of the adapter 34 is a right-handed thread that tightens when rotated clockwise, and the underside of the stay fixing bolt 33 is a left-handed thread (reverse thread) that tightens when rotated counterclockwise. Therefore, when an external force is applied to the mirror assembly 19 in the fore-and-aft direction of the vehicle and torque is applied to the mirror stay 27 from the center of the grip portion 2aR, this torque acts to loosen the fastening of either the screw shaft 34a of the adapter 34 or the stay fixing bolt 33.

[0022] Therefore, whether the rotation direction of the torque applied to the mirror stay 27 is clockwise or counterclockwise, the fastening of either the screw shaft 34a of the adapter 34 or the stay fixing bolt 33 loosens, allowing the mirror stay 27 to rotate, and the input of excessive load to the mirror assembly 19 or the mirror stay 27 is suppressed.

[0023] The mirror assembly 19 comprises a mirror holder 12 having a frame portion 12a that holds the outer peripheral edge 11b of the disc-shaped mirror body 11, a front cover 16 that covers the front side of the vehicle of the mirror holder 12 (the side opposite the mirror body 11) except for a certain width of the outer peripheral portion 12b, and a retainer 21 that is fixed between the mirror holder 12 and the front cover 16.

[0024] The mirror assembly 19 has a circular shape that is slightly larger than the mirror body 11 when viewed in the normal direction of the mirror surface 11a of the mirror body 11, and is formed flat with a reduced thickness in the normal direction overall. The mirror assembly 19 defines a spherical reference front surface 19a overall by the outer peripheral portion 12b of the mirror holder 12 and the front surfaces of the front cover 16. A front lower protrusion 17 is formed on the vehicle front side of the mirror assembly 19, causing the inner peripheral region near the bottom to protrude forward from the reference front surface 19a. The front lower protrusion 17 forms an internal space A1 between the mirror holder 12 and the mirror holder 12, into which the tip end (upper end, ball stud 28) of the mirror stay 27 can be inserted from below.

[0025] The front lower protrusion 17 forms a lower end surface 17a that is substantially horizontal when the rearview mirror 10R is attached to the vehicle body. An opening 17b is formed in the lower end surface 17a, through which a shaft 28b of a ball stud 28 is inserted. The ball stud 28 includes a pivot ball (sphere 28a) located at the upper end of the mirror stay 27, a shaft 28b connected to the lower end of the sphere 28a, and a threaded shaft 28c that protrudes downward from the lower end of the shaft 28b and is screwed and fixed to the upper end of the arm 27c. The ball stud 28 is separate from the mirror stay 27, but it can also be integrated with the stay body 27a as part of the mirror stay 27.

[0026] When the rearview mirror 10R is in its normal operating state, the mirror surface 11a of the mirror body 11 is tilted upward and rearward in the normal direction, and the ball stud 28 is tilted so that the axial direction of the shaft 28b (stud axial direction) is positioned more forward as it lowers. The lower end surface 17a is tilted downward and forward in a side view of the vehicle. This prevents the lower end surface 17a from being exposed to the front of the vehicle, prevents the opening 17b and ball joint from being visible when viewed from the front of the vehicle, and prevents rainwater and dust from entering the mirror assembly 19 from the front of the vehicle. The following description will be given assuming that the stud axial direction is in the tilted state (standard state) described above.

[0027] Fig. 9 is a rear view of the mirror holder 12 as seen from the rear side in the normal direction. Fig. 10 is a front view of the mirror holder 12 as seen from the front side in the normal direction. Fig. 11 is a rear view of the front cover 16 as seen from the rear side in the normal direction. Fig. 12 is a perspective view of the mirror holder 12 as seen from the rear side. Fig. 13 is a perspective view of the mirror holder 12 as seen from the front side. Fig. 14 is a perspective view of the lower part of the front cover 16 as seen from below.

[0028] 9 to 14, the mirror holder 12 covers the rear surface of the mirror body 11 opposite the mirror surface 11a (the vehicle front side) and forms various structures. On the inner periphery of the mirror holder 12, a portion facing the ball stud 28 from above in the stud axial direction is provided with a holder-side recess 13 that forms a concave spherical surface that matches the upper outer surface of the sphere 28a. A pair of widened portions 14a, 14b that widen the left and right width of the holder-side recess 13 are provided on both the left and right sides of the holder-side recess 13. The pair of widened portions 14a, 14b are aligned on the inside and outside of the holder-side recess 13 in the vehicle width direction. Each widened portion 14a, 14b is formed with a bolt insertion hole 14c through which a retainer fixing bolt B1 for fixing the retainer 21 is inserted.

[0029] In the following description, the retainer fixing bolt B1 will be described as being arranged with its axial direction parallel to the stud axial direction. The axial directions of the nut N1 and insertion hole 14c, etc., related to the retainer fixing bolt B1 will also be assumed to be parallel to the stud axial direction. A pair of nuts N1 for threading a pair of retainer fixing bolts B1 are disposed on the upper surface of the elongated wall portion (retainer fastening portion) 13a including the holder-side recess 13 and the pair of widened portions 14a, 14b. The pair of nuts N1 are, for example, weld nuts joined to an elongated steel plate overlapping the upper surface of the retainer fastening portion 13a. The pair of nuts N1 and the steel plate form an integrated nut plate NP1.

[0030] The mirror holder 12 is a molded product made of synthetic resin such as polypropylene. The frame portion 12a of the mirror holder 12 forms a holding groove that opens to the inner periphery. The outer periphery 11b of the mirror body 11 is fitted into the holding groove of the frame portion 12a, thereby holding the mirror body 11 in the mirror holder 12. The outer periphery 12b is continuous with the frame portion 12a on the vehicle front side. A flat portion 12d is formed on the inner periphery side of the outer periphery 12b, and is displaced toward the rear of the vehicle (toward the mirror body 11) via a step portion 12c that extends toward the rear of the vehicle. The flat portion 12d is in the shape of a plate that is approximately parallel to the mirror body 11. The outer periphery of the front cover 16 is attached so that it fits into the inner periphery of the step portion 12c.

[0031] The retainer 21 is disposed below and facing the holder-side recess 13 in the stud axial direction. The retainer 21 includes a retainer-side recess 22 that forms a concave spherical surface that matches the lower outer surface of the sphere 28a, and a shaft insertion hole 22a that penetrates the center of the retainer-side recess 22 and allows the shaft 28b of the ball stud 28 to be inserted therethrough. The retainer 21 is provided with a pair of widened portions 23a, 23b on both lateral sides of the retainer-side recess 22, widening the lateral width of the retainer 21. The pair of widened portions 23a, 23b are aligned on the inner and outer sides of the retainer-side recess 22 in the vehicle width direction. Each widened portion 23a, 23b is formed with a bolt insertion hole 23c through which a retainer fixing bolt B1 is inserted. A pair of washers W1, through which each retainer fixing bolt B1 is inserted, are integrated with each other to form a horizontally elongated washer plate WP1.

[0032] The retainer 21 is fixed to the mirror holder 12 by a pair of retainer fixing bolts B1 with the shaft portion 28b of the ball stud 28 inserted into the shaft insertion hole 22a and the sphere 28a of the ball stud 28 sandwiched between the retainer-side recess 22 and the holder-side recess 13. At this time, the fastening force of the pair of retainer bolts B1 holds the sphere 28a of the ball stud 28 between the retainer-side recess 22 and the holder-side recess 13 with a predetermined holding force. The inner circumferential surface 22b of the shaft insertion hole 22a is tapered downward, allowing the shaft portion 28b to swing around the sphere 28a.

[0033] The bolt fastening portion 25b, which is formed by one of the pair of retainer fixing bolts B1 (on the left side in the drawing, on the outer side in the vehicle width direction), is equipped with a metal collar (spacer) K1 that passes under the neck of the retainer fixing bolt B1. In this bolt fastening portion 25b, the retainer fixing bolt B1 is tightened into a nut N1 via the collar K1 and a washer W1. In this bolt fastening portion 25b, the widened portion 14b of the mirror holder 12 and the widened portion 23b of the retainer 21 are fastened together in an axially abutting state. The widened portions 14b, 23b are each made of resin, and fastening these widened portions 14b, 23b via the collar K1 makes it possible to avoid applying excessive fastening force to the widened portions 14b, 23b and to set the axial position of the retainer 21 to a specified position.

[0034] At the bolt fastening portion 25a of the other of the pair of retainer fixing bolts B1 (on the right side in the drawing, on the inner side in the vehicle width direction), a predetermined gap S1 is formed between the axially opposing surfaces of the widened portion 14a of the mirror holder 12 and the widened portion 23a of the retainer 21. A cylindrical extension portion 23d extending upward and coaxially with the bolt insertion hole 23c is integrally formed on the upper side of the widened portion 23a of the retainer 21 (on the widened portion 14a side of the mirror holder 12). The extension portion 23d is fitted into the bolt insertion hole 14c of the widened portion 14a of the mirror holder 12 so as to be movable in the axial direction. By adjusting the tightening strength of the retainer fixing bolt B1 with this bolt fastening portion 25a, the force clamping the sphere 28a between the mirror holder 12 and the retainer 21 can be increased or decreased, making it possible to adjust the balance between the strength of fixation of the mirror position and ease of movement.

[0035] The front cover 16 is made of, for example, an aluminum alloy. When viewed from the normal direction of the mirror surface 11a, the front cover 16 has a circular shape that follows the step portion 12c of the mirror holder 12. The front cover 16 has a convex bulging shape on the side opposite the mirror body 11 in the normal direction (toward the front of the vehicle). When viewed from the normal direction, the front cover 16 forms a front lower protrusion 17 below the center position. The front cover 16 covers the front side of the mirror holder 12 (the side opposite the mirror body 11 in the normal direction).

[0036] A pair of left and right fastening bosses 16a for connecting to the mirror holder 12 are integrally formed on the inner surface side (rear surface side, mirror holder 12 side) of the front cover 16. The pair of fastening bosses 16a are arranged with their axial directions facing the normal direction. Fastening wall portions 12e are provided on the inner periphery side of the mirror holder 12 at the tips of the left and right fastening bosses 16a, facing each other from the rear side of the vehicle. Cover fixing bolts B2 are inserted into a pair of bolt insertion holes formed in the fastening wall portions 12e, and the pair of cover fixing bolts B2 are screwed into and tightened into the pair of fastening bosses 16a, thereby fixing the front cover 16 to the front side of the mirror holder 12. For example, a horizontally elongated washer plate WP2 is arranged on the rear surface side (mirror body 11 side) of the fastening wall portion 12e, spanning the pair of bolt insertion holes.

[0037] The front cover 16 is attached to and detached from the mirror holder 12 before the mirror body 11 is attached to the mirror holder 12. That is, the cover fixing bolt B2 is attached and detached through an opening on the inside of the frame portion 12a of the mirror holder 12, and after the work is completed, the mirror body 11 is fitted and fixed into the frame portion 12a. This makes it impossible to see the fasteners such as the cover fixing bolt B2 after the mirror is assembled.

[0038] The opening 17b formed in the lower end surface 17a of the front lower protrusion 17 has an oval shape that is long in the front-to-rear direction so that the shaft 28b of the ball stud 28 can swing widely, particularly in the front-to-rear direction. A pair of working holes 17c are formed on both the left and right sides of the opening 17b at the lower end of the protrusion, allowing a tool to access the head of the retainer fixing bolt B1. This makes it possible to adjust the tightening strength of the retainer fixing bolt B1 even after the mirror assembly 19 has been assembled.

[0039] Here, the bolt fastening portion 25b on the outer side in the vehicle width direction is a fastening portion that is firmly fastened using a collar K1, and the bolt fastening portion 25a on the inner side in the vehicle width direction is a fastening portion with a gap S1. This allows the tightening strength of the retainer fixing bolt B1 to be adjusted without making a mistake in the bolt. By making the bolt fastening portion 25b on the outer side in the vehicle width direction a fastening portion that is firmly fastened using the collar K1 rather than an adjustment portion, it is easier to withstand external forces from the outside in the vehicle width direction. In particular, for the rearview mirror 10R that protrudes in the vehicle width direction, such as a bar end mirror, objects or bodies frequently come into contact with the outside of the mirror in the vehicle width direction, and the above-mentioned arrangement of the bolt fastening portions 25a, 25b is suitable. The bolt fastening portion 25a on the inner side in the vehicle width direction is a fastening portion that allows the tightening strength of the retainer fixing bolt B1 to be adjusted, making it easy to adjust the mirror angle by operating it from the inside in the vehicle width direction.

[0040] As explained above, the rearview mirror structure in the above embodiment is a structure of rearview mirrors 10L, 10R that includes a mirror body 11 that forms a mirror surface 11a, a mirror holder 12 that holds the mirror body 11, a front cover 16 that covers the mirror holder 12 from the side opposite to the mirror body 11, and a mirror stay 27 that supports a mirror assembly 19 that includes the mirror body 11, the mirror holder 12, and the front cover 16 on a vehicle body. In this structure, a ball stud 28 located at the tip of the mirror stay 27 is inserted into a space A1 between the mirror holder 12 and the front cover 16, and a sphere 28a of the ball stud 28 is rotatably held within the space A1 by a retainer 21 that is fastened to the mirror holder 12. The retainer fastening portion 13a of the mirror holder 12 has a holder side recess 13 into which the sphere 28a is fitted, and the retainer 21 has a retainer side recess 22 that faces the holder side recess 13 and into which the sphere 28a is fitted, the sphere 28a is sandwiched between the holder side recess 13 and the retainer side recess 22, and the retainer 21 is fastened to the retainer fastening portion 13a with a bolt B1 and a nut N1, so that the sphere 28a is held between the holder side recess 13 and the retainer side recess 22, and the bolt B1 and nut N1 that fasten the retainer 21 to the retainer fastening portion 13a are tightened via a collar K1 that passes through the bolt B1.

[0041] According to this configuration, the bolt B1 and nut N1 that clamp the sphere 28a of the ball stud 28 of the mirror stay 27 are tightened via the collar K1, so that the fastening force of the bolt B1 and nut N1 is received by the collar K1, and the relative position (distance) between the holder-side recess 13 and the retainer-side recess 22 can be set to a specified value. In other words, the sphere 28a can be clamped with a specified force simply by tightening the bolt B1 and nut N1. This simplifies the tightening operation of the retainer 21, facilitating the manufacture and maintenance of the rearview mirrors 10L, 10R.

[0042] In the above rearview mirror structure, the bolt fastening portions 25a, 25b using the bolt B1 and the nut N1 are provided on both sides of the sphere 28a in a first direction (vehicle width direction) when viewed from the fastening direction, and the first fastening portion 25b provided on one side of the sphere 28a in the first direction has the bolt B1 and the nut N1 fastened via the collar K1, and abuts the retainer 21 against the retainer fastening portion 13a, and the second fastening portion 25a provided on the other side of the sphere 28a in the first direction has the bolt B1 and the nut N1 fastened without via the collar K1, and leaves a gap S1 between the retainer fastening portion 13a and the retainer 21.

[0043] According to this configuration, one of the pair of fastening portions 25a, 25b sandwiching the sphere 28a has the bolt B1 and nut N1 fastened via the collar K1, and the retainer fastening portion 13a and the retainer 21 abut against each other, thereby fixing the holder-side recess 13 and the retainer-side recess 22 at a specified relative position (distance) while avoiding application of excessive fastening force to the retainer fastening portion 13a and the retainer 21. The other of the pair of fastening portions 25a, 25b has the bolt B1 and nut N1 fastened without the collar K1, but by separating the retainer fastening portion 13a and the retainer 21 from each other, the force clamping the sphere 28a can be easily adjusted by increasing or decreasing the amount of fastening of the bolt B1 and the nut N1 while avoiding the generation of excessive fastening force due to the fastening of the bolt B1 and the nut N1.

[0044] In the above rearview mirror structure, the first direction is the vehicle width direction, the first fastening portion 25b is provided on the outer side in the vehicle width direction, and the second fastening portion 25a is provided on the inner side in the vehicle width direction. According to this configuration, the fastening portion 25b, which is firmly fastened via the collar K1, is located on the outer side in the vehicle width direction, thereby strengthening the fixing force of the mirror assembly 19 on the outer side in the vehicle width direction. Therefore, even if an unintended external force is applied to the outer side in the vehicle width direction of the mirror assembly 19, the mirror assembly 19 is less likely to tilt or rotate. On the other hand, the fastening portion 25a, which is fastened via the gap S1 without using the collar K1, is located on the inner side in the vehicle width direction, thereby making it easier for the mirror assembly 19 to be moved by a force from the inner side in the vehicle width direction. Therefore, it becomes easier for the user to operate the mirror assembly 19 from the inner side in the vehicle width direction to adjust the angle, etc. In other words, it is possible to make it easier for the user to adjust the angle of the mirror assembly 19 while suppressing movement of the mirror assembly 19 due to an external force from the outer side in the vehicle width direction.

[0045] The above rearview mirror structure is applied to bar-end type rearview mirrors 10L, 10R attached to outer ends 2b of left and right grip portions 2aL, 2aR of a steering handlebar 2 of a saddle-ride type vehicle 1. According to this configuration, when applied to bar-end type rearview mirrors 10L, 10R, the mirror assembly 19, which tends to protrude outward in the vehicle width direction, is less likely to tilt or rotate when an external force is applied to the outside in the vehicle width direction, and angle adjustments, etc. can be easily performed by operating from the inside in the vehicle width direction.

[0046] The present invention is not limited to the above-described embodiment. For example, the rearview mirror structure of the present embodiment may be applied to saddle-ride type vehicles other than motorcycles. The saddle-ride type vehicles include all vehicles on which the driver straddles the body, and include not only motorcycles (including motorized bicycles and scooter-type vehicles), but also three-wheeled vehicles (including vehicles with one front wheel and two rear wheels, as well as vehicles with two front wheels and one rear wheel) or four-wheeled vehicles (such as four-wheeled buggies). The rearview mirror structure of the present embodiment may also be applied to vehicles that include an electric motor as a prime mover. The configurations in the above-described embodiments are merely examples of the present invention, and various modifications are possible within the scope of the gist of the present invention, such as replacing the components of the embodiments with well-known components. [Explanation of symbols]

[0047] 1. Saddle-type vehicle 2 steering handle 2aL, 2aR Grip section 2b Outer edge 10L, 10R rearview mirror 11 Mirror body 11a Mirror surface 12 Mirror holder 13 Holder side recess 13a Retainer fastening part 16 Front cover 19 Mirror assembly 21 Retainer 22 Retainer side recess 25a Bolt fastening part, second fastening part 25b Bolt fastening part, first fastening part 27 Mirror stay 28 ball studs 28a Sphere A1 space B1 Bolt K1 color N1 Nut S1 Gap

Claims

1. A rearview mirror (10L, 10R) structure comprising: a mirror body (11) forming a mirror surface (11a); a mirror holder (12) holding the mirror body (11); a front cover (16) covering the mirror holder (12) from the side opposite to the mirror body (11); and a mirror stay (27) supporting a mirror assembly (19) including the mirror body (11), the mirror holder (12), and the front cover (16) on a vehicle body, A ball stud (28) located at the tip of the mirror stay (27) is inserted into the space (A1) between the mirror holder (12) and the front cover (16), The sphere (28a) of the ball stud (28) is rotatably held in the space (A1) by a retainer (21) fastened to the mirror holder (12), The mirror holder (12) has a holder-side recess (13) into which the sphere (28a) is fitted, The retainer (21) has a retainer-side recess (22) that faces the holder-side recess (13) and into which the spherical body (28a) is fitted, The sphere (28a) is sandwiched between the holder-side recess (13) and the retainer-side recess (22), and the retainer (21) and the mirror holder (12) are fastened together with a bolt (B1) and a nut (N1), thereby holding the sphere (28a) between the holder-side recess (13) and the retainer-side recess (22); A rearview mirror structure characterized in that the bolt (B1) and nut (N1) that fasten the retainer (21) and the mirror holder (12) are tightened via a collar (K1) through which the bolt (B1) is inserted.

2. bolt fastening portions (25a, 25b) formed by the bolt (B1) and the nut (N1) are provided on both sides of the sphere (28a) in a first direction when viewed from the fastening direction, The rearview mirror structure of claim 1, characterized in that the first fastening portion (25b) provided on one side of the sphere (28a) in the first direction abuts the retainer (21) against the mirror holder (12) while the bolt (B1) and the nut (N1) are fastened via the collar (K1), and the second fastening portion (25a) provided on the other side of the sphere (28a) in the first direction abuts the retainer (21) against the mirror holder (12), while the bolt (B1) and the nut (N1) are fastened without the collar (K1) being fastened via the second fastening portion (25a) while leaving a gap (S1) between the mirror holder (12) and the retainer (21).

3. the first direction is a vehicle width direction, 3. The rearview mirror structure according to claim 2, wherein the first fastening portion (25b) is provided on an outer side in the vehicle width direction, and the second fastening portion (25a) is provided on an inner side in the vehicle width direction.

4. 4. The rearview mirror structure according to claim 3, wherein the rearview mirror structure is applied to bar-end type rearview mirrors (10L, 10R) attached to the outer ends (2b) of the left and right grip portions (2aL, 2aR) of the steering handle (2) of a saddle-ride type vehicle (1).

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