JP2016164045A - Vehicle inside mirror device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that a reflection surface may be inclined by vibration of a vehicle in a conventional vehicle inside mirror device.SOLUTION: The invention includes: a mirror part 2; an attachment part; a connection part 4; and a reflection surface angle adjustment mechanism. The reflection surface angle adjustment mechanism has: a spherical surface part 25 of the mirror part 2; a spherical surface part 60 of a first spherical surface member 6; a spherical surface part 42 of the connection part 4; a spherical surface part 70 of a second spherical surface member 7; and a fastening member. As a result, the invention can move a center O of rotation of the mirror part 2 close to a centroid G of the mirror part 2 and thereby prevents a reflection surface from being inclined by vibration of a vehicle.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle inside mirror device that can adjust the angle of a reflecting surface (mirror surface).

  This type of vehicle inside mirror device is conventionally known (for example, Patent Document 1). Hereinafter, a conventional vehicle inside mirror device will be described. In the conventional vehicle inside mirror device, one end is provided with a sphere portion of the reflection surface angle adjustment mechanism at the other end of the stay mounted on the vehicle body, and the mirror housing is provided with a hemispherical elastic dome portion of the reflection surface angle adjustment mechanism. The mirror housing is connected to the other end of the stay so that the angle of the reflecting surface of the mirror can be adjusted by holding the mirror having the reflecting surface in the mirror housing and press-fitting the ball portion of the stay into the elastic dome portion of the mirror housing. Is.

JP 2006-103622 A

  Here, in the general vehicle inside mirror device including the conventional vehicle inside mirror device described above, the mirror housing and the mirror (hereinafter referred to as “mirror portion”) have a mirror portion caused by vibration of the vehicle. A downward force is applied in the direction in which gravity acts from the center of gravity. At this time, torque is applied to the spherical portion and the elastic dome portion of the reflecting surface angle adjusting mechanism. This torque increases as the distance from the center of the ball portion to the center of gravity of the mirror portion increases and as the weight of the mirror portion increases.

  However, in the conventional vehicle inside mirror device, since the reflecting surface angle adjusting mechanism of the stay is constituted by a sphere part, it is difficult to bring the center of the sphere part close to the center of gravity of the mirror part. For this reason, since it is difficult for the conventional vehicle inside mirror device to reduce the torque, the mirror portion may be inclined with respect to the center of the sphere portion and the reflective surface may be inclined.

  Hereinafter, it will be described with reference to the existing vehicle inside mirror device 100 in FIG. 6 that it is difficult to bring the center O1 of the ball portion 401 close to the center of gravity G of the mirror portion 2. 6, the same reference numerals as those in FIGS. 1 to 5 (an explanatory diagram of an example of an embodiment of the vehicle inside mirror device according to the present invention described below) are the same or similar.

  In the existing vehicle inside mirror device 100 of FIG. 6, the reflection surface angle adjustment mechanism of the connecting portion 400 is composed of the sphere portion 401, and therefore, from the center O <b> 1 of the sphere portion 401 to the radius of the sphere portion 401. The ball portion 401 itself exists at the place. In addition, a holding member 402 that holds the sphere 401 rotatably is present around the sphere 401. For this reason, when the center O1 of the sphere part 401 is brought close to the center of gravity G of the mirror part 2 including the mirror housing 20 and the mirror body 23, the mirror body 23, the sphere part 401, and the holding member 402 interfere with each other. Accordingly, it is difficult to bring the center O1 of the sphere 401 close to the center of gravity G of the mirror unit 2.

  As described above, in the conventional vehicle inside mirror device, since the reflecting surface angle adjustment mechanism of the stay is composed of the sphere part, it is difficult to bring the center of the sphere part close to the center of gravity of the mirror part. As a result, the mirror part may be inclined with respect to the center of the sphere part and the reflecting surface may be inclined. And in today's vehicle inside mirror device, the mirror (mirror body 23) tends to be equipped with ETC, drive recorder, anti-glare liquid crystal device, etc., so the weight of the mirror portion tends to be heavy, Accordingly, the mirror part is inclined with respect to the center of the sphere part and the reflecting surface tends to be inclined.

  The problem to be solved by the present invention is that in a conventional vehicle inside mirror device, the reflection surface may be inclined due to vehicle vibration or the like.

  This invention (invention concerning Claim 1) adjusts the angle of the mirror part which has a reflective surface, the attachment part attached to a vehicle body, the connection part which connects a mirror part and an attachment part, and the reflective surface of a mirror part A reflecting surface angle adjusting mechanism, and the reflecting surface angle adjusting mechanism is attached to the spherical surface portion provided in the mirror portion and the outer surface contacts the inner surface of the spherical surface portion of the mirror portion. A first spherical member that is in contact; a spherical portion that is provided at the connecting portion, and whose outer surface is in contact with the inner surface of the first spherical member; and a second spherical member that has the outer surface in contact with the inner surface of the spherical portion of the connecting portion. And a fastening member that fastens the first spherical member, the spherical portion of the connecting portion, and the second spherical member to each other.

  In this invention (the invention according to claim 2), the center of the spherical portion of the mirror portion, the center of the first spherical member, the center of the spherical portion of the connecting portion, and the center of the second spherical member are It is characterized by being coincident or almost coincident with the center of gravity.

  In the inside mirror device for a vehicle according to the present invention, the reflection surface angle adjusting mechanism includes a spherical portion of the mirror portion, a first spherical member, a spherical portion of the connecting portion, a second spherical member, and a tightening member. Therefore, a space is formed around the spherical portion of the mirror portion, the spherical portion of the connecting portion, and the periphery of the spherical member (hereinafter referred to as “center”). For this reason, the inside mirror device for a vehicle according to the present invention makes it possible to bring the center closer to the center of gravity of the mirror part and reduce the torque acting on the reflecting surface angle adjusting mechanism. It is possible to prevent the reflecting surface from being inclined.

FIG. 1 is an explanatory diagram of a use state showing an embodiment of a vehicle inside mirror device according to the present invention. FIG. 2 is a vertical cross-sectional view (vertical cross-sectional view) showing the mirror portion, the connecting portion, and the reflecting surface angle adjusting mechanism. FIG. 3 is an exploded perspective view showing the mirror portion, the connecting portion, and the reflecting surface angle adjusting mechanism. FIG. 4 is a partial perspective view of the assembled state showing the mirror portion, the connecting portion, and the reflecting surface angle adjusting mechanism. FIG. 5 is a vertical cross-sectional view (vertical cross-sectional view) showing the mirror portion, the connecting portion, and the reflecting surface angle adjusting mechanism. FIG. 6 is a partial vertical cross-sectional view (partially vertical cross-sectional view) showing an existing vehicle inside mirror device.

  Hereinafter, an example of an embodiment of an inside mirror device for vehicles concerning this invention is explained in detail based on a drawing. In addition, this invention is not limited by this embodiment. In this specification and the appended claims, the “inner surface” is a space-side surface defined by the mirror housing 20 and the mirror body 23 of the mirror portion 2. The “outer surface” is a surface opposite to the “inner surface”.

(Description of Configuration of Embodiment)
Hereinafter, the configuration of the vehicle inside mirror device in this embodiment will be described. As shown in FIG. 1, the vehicle inside mirror device 1 in this embodiment is mounted on the inner surface (vehicle interior) of the front window glass 5 in the vehicle body, in this example, and is disposed in the vehicle interior.

(Description of the vehicle inside mirror device 1)
As shown in FIGS. 1 to 5, the vehicle inside mirror device 1 includes a mirror portion 2, a mounting portion 3, a connecting portion 4, and a reflecting surface angle adjusting mechanism.

(Description of mirror part 2)
The mirror part 2 is composed of a mirror housing 20 and a mirror body 23. In this example, the mirror housing 20 is made of a synthetic resin member. The mirror housing 20 has a hollow shape with one side opened. A through hole 22 is provided in the central portion of the closing portion facing the opening 21 of the mirror housing 20. The through hole 22 has a circular shape in this example.

  In this example, the mirror body 23 is made of glass. The mirror body 23 has a reflective surface. The reflecting surface reflects the traffic situation on the rear side of the vehicle to the driver. The mirror body 23 is attached to the mirror housing 20 via a reflectance (antiglare) switching mechanism 24. The reflectance switching mechanism 24 is provided on the inner surface of the mirror housing 20 and the inner surface of the mirror body 23, respectively. The mirror body 23 may be equipped with an ETC, a drive recorder, a liquid crystal device (not shown), or the like.

(Description of mounting part 3)
The attachment portion 3 includes a fixing member 30 and a dropping member 31. The fixing member 30 is fixed to the inner surface of the front window glass 5. The drop-off member 31 is detachably attached to the fixing member 30 via a drop-off mechanism (not shown). From the viewpoint of safety, when the load of a predetermined value or more is applied to the mirror part 2 or the like, the drop-off member 31 drops off from the fixing member 30 together with the mirror part 2 and the connecting part 4 by the action of the drop-off mechanism.

(Description of connecting part 4)
In this example, the connecting portion 4 is composed of a die-cast metal member or a molded resin member. In this example, the connecting portion 4 has a cylindrical rod member 40 as a stay. One end of the rod member 40 is integrally provided with a ball portion 41. The ball portion 41 is integrally attached to the drop-off member 31 so as to be rotatable.

(Description of reflection surface angle adjustment mechanism)
The reflection surface angle adjustment mechanism includes a spherical portion 25 of the mirror portion 2, a first spherical member 6, a spherical portion 42 of the connecting portion 4, a second spherical member 7, and a tightening member 8. Is.

  The spherical portion 25 of the mirror portion 2 is integrally provided in a spherical seat shape at the central portion of the closing portion that faces the opening 21 of the mirror housing 20. The through hole 22 is provided in the center of the spherical portion 25. Mounting boss portions (not shown) are integrally provided on the inner side surface of the mirror housing 20 and on both the left and right sides outside the spherical portion 25. A circular insertion hole 26 is provided outside the spherical portion 25 of the mirror housing 20.

  In this example, the first spherical member 6 is made of a SPCC metal member. The first spherical member 6 is a plate member formed by press working or the like. A spherical portion 60 is integrally formed in a spherical seat shape at the center of the intermediate plate of the first spherical member 6. A through hole 61 is provided at the center of the spherical portion 60. The through hole 61 has a circular shape in this example. A circular insertion hole 66 is provided outside the spherical surface portion 60 of the first spherical member 6 so as to correspond to the insertion hole 26 of the mirror housing 20.

  Attachment pieces 62 are integrally provided on both upper and lower ends of the left and right side plates of the first spherical member 6. Each of the mounting pieces 62 is provided with a circular insertion hole 63. A rectangular engagement hole 64 is provided at each of the upper and lower ends of one side plate. A screw 65 passes through the insertion hole 63 of the mounting piece 62 and is screwed into the mounting boss portion of the mirror housing 20. As a result, the first spherical member 6 is attached to the mirror portion 2. The outer surface of the spherical portion 60 of the first spherical member 6 is in contact with the inner surface of the spherical portion 25 of the mirror portion 2.

  The spherical portion 42 of the connecting portion 4 is integrally provided in a spherical seat shape at the other end of the rod member 40. The spherical portion 41 of the connecting portion 4 passes from the inside of the mirror housing 20 through the through hole 61 of the first spherical member 6 and the through hole 22 of the mirror housing 20 to the outside of the mirror housing 20. Protruding. The outer surface of the spherical portion 42 of the connecting portion 4 is in contact with the inner surface of the spherical portion 60 of the first spherical member 6.

  In this example, the second spherical member 7 is made of an SPCC metal member, like the first spherical member 6. A spherical portion 70 is integrally formed in a spherical seat shape at the center of the second spherical member 7. A boss portion 71 is integrally provided at a central portion of one side portion of the second spherical member 7. The boss portion 71 is provided with a screw hole 72. Engaging pieces 73 are integrally provided on both upper and lower ends of the other side of the second spherical member 7. The engaging piece 73 of the second spherical member 7 is engaged with the edge of the engaging hole 64 of the first spherical member 6. The outer surface of the spherical portion 70 of the second spherical member 7 is in contact with the inner surface of the spherical portion 42 of the connecting portion 4.

  In this example, the tightening member 8 includes a head 80 and a screw portion 81. The screw portion 81 of the tightening member 8 is inserted into the insertion hole 26 of the mirror housing 20 and the insertion hole 66 of the first spherical member 6, and the screw of the second spherical member 7 is inserted. It is screwed into the hole 72. The surface of the head 80 of the tightening member 8 on the screw portion 81 side is in contact with the outer surface of the first spherical member 6. The fastening member 8 fastens the spherical portion 60 of the first spherical member 6, the spherical portion 42 of the connecting portion 4, and the spherical portion 70 of the second spherical member 7. In other words, the screw portion 81 of the tightening member 8 screwed into the screw hole 72 of the second spherical member 7 is used as a power point, and is engaged with the edge of the engagement hole 64 of the first spherical member 6. The engaging piece 73 of the second spherical member 7 is a fulcrum, and the spherical portion 60 of the first spherical member 6, the spherical portion 42 of the connecting portion 4, and the spherical portion of the second spherical member 7. The lever principle with 70 as the action point works.

  The tightening member 8 is tightened or loosened to the second spherical member 7 by the rotation of a tool passed through the insertion hole 26 of the mirror housing 20. At this time, since the engaging piece 73 of the second spherical member 7 is engaged with the edge of the engaging hole 64 of the first spherical member 6, the fastening member 8 is rotated by the rotation of the tool. Even if the second spherical member 7 is tightened or loosened, the second spherical member 7 does not rotate with respect to the first spherical member 6 and the mirror portion 2. Thereby, the fastening member 8 can be fastened or loosened to the second spherical member 7 by the rotation of the tool.

  The spherical portion 42 of the connecting portion 4 is sandwiched between the spherical portion 60 of the first spherical member 6 and the spherical portion 70 of the second spherical member 7. The through hole 22 of the spherical surface portion 25 of the mirror portion 2 and the through hole 61 of the spherical surface portion 60 of the first spherical member 6 are larger than the spherical portion 41 of the connecting portion 4. The insertion hole 26 of the mirror housing 20 is larger than the head 80 of the tightening member 8. The insertion hole 66 of the first spherical member 6 is smaller than the head portion 80 of the tightening member 8.

  The center O of the spherical part 25 of the mirror part 2, the center O of the spherical part 60 of the first spherical member 6, the center O of the spherical part 42 of the connecting part 4, and the second spherical member 7. The center O of the spherical portion 70 coincides with or substantially coincides with the center of gravity G of the mirror portion 2. Gravity acts on the spherical portion 25 of the mirror portion 2, the spherical portion 60 of the first spherical member 6, the spherical portion 42 of the connecting portion 4, and the spherical member 6 from the center of gravity G of the mirror portion 2. It is arranged on the opposite side to the reflecting surface, that is, the mirror body 23 with respect to the direction (direction of arrow F in FIG. 2).

(Description of the operation of the embodiment)
The vehicle inside mirror device 1 in this embodiment is configured as described above, and the operation thereof will be described below.

  The traffic situation on the rear side of the vehicle is reflected to the driver side on the reflecting surface of the mirror body 23 of the mirror unit 2. Thereby, the driver can visually recognize and grasp the traffic situation on the rear side of the vehicle displayed on the reflecting surface of the mirror body 23, which can contribute to traffic safety.

  When the driver changes or the driver's posture changes, it is necessary to adjust the angle of the reflecting surface of the mirror body 23 to an angle suitable for the driver. The angle of the reflecting surface of the mirror body 23 is adjusted by hand (not shown) by moving the mirror housing 20 of the mirror part 2 to the center O of the spherical part 25 of the mirror part 2 and the center O of the spherical part 60 of the first spherical member 6. Further, the rotation is performed by rotating (turning or tilting) around the center O of the spherical portion 42 of the connecting portion 4 and the center O of the spherical portion 70 of the second spherical member 7 (hereinafter referred to as “center O”). The force required for angle adjustment (hereinafter referred to as “angle adjustment force”) is inversely proportional or almost inversely proportional to the distance L from the contact point between the hand and the mirror housing 20 to the center O. That is, the longer the distance L, the smaller the angle adjustment force, and the angle can be adjusted easily.

  The angle adjusting force is a force (hereinafter referred to as “clamping force”) that mutually tightens the spherical portion 60 of the first spherical member 6, the spherical portion 42 of the connecting portion 4, and the spherical portion 70 of the second spherical member 7. Proportionally or almost proportionally). That is, when the tightening force is large, it is possible to prevent the mirror portion 2 from being tilted about the center O and the reflecting surface of the mirror body 23 from being tilted, but the angle adjustment force is increased and the angle adjustment is easily performed. Becomes difficult. On the other hand, when the tightening force is small, the angle adjustment force is small and the angle adjustment can be easily performed. However, the mirror portion 2 may be tilted about the center O and the reflection surface of the mirror body 23 may be tilted. For this purpose, it is necessary to adjust the tightening force in balance with the angle adjusting force.

  For adjusting the tightening force, the tool is connected to the head portion 80 of the tightening member 8 through the insertion hole 26 of the mirror housing 20, and the screw portion 81 of the tightening member 8 is rotated on the second spherical member 7 by rotating the tool. This is done by tightening or loosening the screw hole 72.

  In addition, the reflectance of the reflecting surface of the mirror body 23 can be manually switched between the normal reflectance and the anti-glare reflectance through the reflectance switching mechanism 24. Note that by providing the mirror body 23 with an anti-glare liquid crystal device or the like, the reflectance of the reflecting surface of the mirror body 23 can be switched automatically and steplessly.

(Explanation of effect of embodiment)
The vehicle inside mirror device 1 according to this embodiment is configured and operated as described above, and the effects thereof will be described below.

  In the vehicle inside mirror device 1 in this embodiment, the reflecting surface angle adjustment mechanism includes a spherical portion 25 of the mirror portion 2, a spherical portion 60 of the first spherical member 6, a spherical portion 42 of the connecting portion 4, and a second portion. Since the spherical member 70 is composed of the spherical member 70 and the fastening member 8, the spherical member 25 of the mirror member 2, the spherical member 60 of the first spherical member 6, and the spherical member 42 of the connecting member 4. A space is formed around the center O of the spherical portion 70 of the second spherical member 7. For this reason, the inside mirror device 1 for a vehicle in this embodiment can bring the center O closer to the center of gravity G of the mirror part 2, and a force acting on the center of gravity G (gravity acts from the center of gravity G of the mirror part 2). Since the torque applied to the reflecting surface angle adjusting mechanism caused by the downward force (F) in the direction can be reduced, it is possible to prevent the reflecting surface from being inclined due to the mirror portion 2 being inclined with respect to the center O.

  As described above, the vehicle inside mirror device 1 in this embodiment can bring the center O closer to the center of gravity G of the mirror unit 2 as compared with the existing vehicle inside mirror device 100 shown in FIG. Moreover, the inside mirror device 1 for a vehicle in this embodiment is equipped with an ETC, a drive recorder, an anti-glare liquid crystal device, etc. on the mirror body 23, and the mirror portion 2 is the center even if the weight of the mirror portion 2 increases. It is possible to prevent the reflecting surface from being inclined with respect to O (see the solid arrow on the arc in FIG. 6).

  The vehicle inside mirror device 1 according to this embodiment includes the spherical surface portion 60 of the first spherical member 6 and the spherical surface portion 42 of the connecting portion 4 and the spherical surface portion 70 of the second spherical member 7 and the fastening member 8 of the reflection surface angle adjusting mechanism. Can be arranged inside the mirror housing 20, the reflection surface angle adjusting mechanism does not appear outside the mirror housing 20, and the appearance is improved.

  The vehicle inside mirror device 1 in this embodiment includes a center O of the spherical portion 25 of the mirror portion 2, a center O of the spherical portion 60 of the first spherical member 6, and a center O of the spherical portion 42 of the connecting portion 4. The center O of the spherical surface portion 70 of the second spherical member 7 coincides with or substantially coincides with the center of gravity G of the mirror portion 2. For this reason, the vehicle inside mirror device 1 in this embodiment can further reduce the torque applied to the reflecting surface angle adjusting mechanism caused by the force F acting on the center of gravity G, so that the mirror portion 2 is located with respect to the center O. It is possible to further reliably prevent the reflecting surface from being inclined.

  The vehicle inside mirror device 1 in this embodiment can bring the center O closer to the center of gravity G of the mirror part 2, or can make the center O coincide with or substantially coincide with the center of gravity G of the mirror part 2. For this reason, the vehicle inside mirror device 1 in this embodiment can be shortened to a distance L from the contact point between the hand and the mirror housing 20 to the center O. That is, the distance L from the contact point between the hand and the mirror housing 20 in the vehicle inside mirror device 1 in this embodiment to the center O is the distance between the hand and the mirror housing 20 in the existing vehicle inside mirror device 100 shown in FIG. The tightening force can be reduced without significantly changing the distance L1 from the contact point to the center O1 of the ball 401. Thereby, the vehicle inside mirror device 1 in this embodiment can easily adjust the angle of the reflecting surface of the mirror body 23 in substantially the same manner as the existing vehicle inside mirror device 100 shown in FIG.

  The vehicle inside mirror device 1 in this embodiment can bring the center O closer to the center of gravity G of the mirror part 2, or can make the center O coincide with or substantially coincide with the center of gravity G of the mirror part 2. For this reason, the vehicle inside mirror device 1 in this embodiment includes the spherical portion 25 of the mirror portion 2, the spherical portion 60 of the first spherical member 6, the spherical portion 42 of the connecting portion 4, and the spherical portion of the second spherical member 7. 70 can be arranged on the side opposite to the reflecting surface of the mirror body 23 with respect to the direction in which gravity acts from the center of gravity G of the mirror portion 2 (the direction of the solid line arrow of “F” in FIG. 2). Thereby, the inside mirror device 1 for vehicles in this embodiment does not need to arrange | position the rod member 40 of the connection part 4 along the direction where gravity acts from the gravity center G of the mirror part 2, and the rod member of the connection part 4 40 can be arranged so as to intersect or be orthogonal to the direction in which gravity acts from the center of gravity G of the mirror portion 2. As a result, in the vehicle inside mirror device 1 in this embodiment, the degree of freedom such as the arrangement and design of the rod member 40 of the connecting portion 4 is increased.

DESCRIPTION OF SYMBOLS 1 Inside mirror apparatus for vehicles 100 Inside mirror apparatus for existing vehicles 2 Mirror part 20 Mirror housing 21 Opening part 22 Through-hole 23 Mirror body 24 Reflectivity switching mechanism 25 Spherical surface part 26 Insertion hole 3 Attachment part 30 Fixing member 31 Dropping member 4 Connecting portion 400 Existing connecting portion 40 Rod member 41 Ball portion 401 Existing spherical portion 402 Existing holding member 42 Spherical surface portion 5 Front window glass 6 First spherical surface member 60 Spherical surface portion 61 Through hole 62 Mounting piece 63 Insertion hole 64 Engagement Hole 65 Screw 66 Insertion hole 7 Second spherical member 70 Spherical surface portion 71 Boss portion 72 Screw hole 73 Engagement piece 8 Tightening member 80 Head 81 Screw portion F Force G Center of gravity L, L1 Distance O, O1 center

Claims (2)

A mirror portion having a reflective surface;
A mounting portion attached to the vehicle body;
A connecting part for connecting the mirror part and the mounting part;
A reflection surface angle adjustment mechanism for adjusting an angle of the reflection surface of the mirror portion;
With
The reflection surface angle adjustment mechanism is
A spherical surface provided in the mirror part;
A first spherical member attached to the mirror portion and having an outer surface abutting against an inner surface of the spherical portion of the mirror portion;
A spherical portion that is provided in the connecting portion, and whose outer surface abuts against the inner surface of the first spherical member;
A second spherical member whose outer side surface is in contact with the inner side surface of the spherical portion of the connecting portion;
A tightening member that fastens the first spherical member, the spherical portion of the connecting portion, and the second spherical member;
Having
The inside mirror device for vehicles characterized by the above-mentioned. The center of the spherical part of the mirror part, the center of the first spherical member, the center of the spherical part of the connecting part, and the center of the second spherical member coincide with or substantially coincide with the center of gravity of the mirror part. Match,
The inside mirror device for vehicles according to claim 1 characterized by things.

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