JPH09178921A - Composite curved surface mirror for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extend the downward field of view on the left and right sides by providing a gradual curvature curved surface part under a single curvature curved surface part and forming this gradual curvature curved surface part so as to project near the rear wheels of vehicle. SOLUTION: At the upper part of a mirror body 22 of a door mirror, a single curvature curved surface part 28 is arranged for visually confirming the rear field of view and on the surface of its lower end, a gradual curvature curved surface part 30 is arranged so as to be smoothly communicated with it. A composite mirror 25 for vehicle is set so that a part of rear wheel 38 at a car body 36 or near the rear wheel projected on the mirror body 22 can be visually confirmed on the gradual curvature curved surface part 30 when a driver sits down on a driver's seat. When moving the vehicle backward, for example, a handle operation can be easily performed so as not to fall into a side groove 40 of road while confirming the wheel 38 projected in the gradual curvature curved surface part 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compound curved mirror for a vehicle, which secures a lateral view of a vehicle such as a passenger car, a truck or a bus.

[0002]

2. Description of the Related Art As is well known, various mirrors such as a rearview mirror, a front side under mirror, and a combination of the above two mirrors have been proposed for the vehicle. In addition, the door mirrors of passenger cars, which have become almost standard equipment recently, are used daily with the field of view adjusted to the rear and distant side, but the vicinity of the ground contact surface of the rear wheel is difficult to enter the field of view of the door mirror.

When it is necessary to retract the vehicle such as entering a garage, the door mirror is once adjusted downward to adjust the field of view so that the rear wheels can be seen in the door mirror, and then the vehicle is moved backward. Again, when moving forward, the door mirror is raised upward, and it is used, for example, in the standard position, but this change in the view area needs to be adjusted each time as described above, which is troublesome for the driver while driving. It is working.

As a means for solving the problems of this type of conventional device, there is, for example, Japanese Utility Model Laid-Open No. 58-166601. The technique described in the publication is a reflecting mirror including a mirror body 1 in which a flat mirror portion 1a and a convex curved mirror portion 1b are continuously formed as shown in FIGS. 12 (A) and 12 (B). The convex curved mirror section 1
b is provided with a curvature in the vertical direction of the vehicle and no curvature in the vehicle width direction of the vehicle, and is formed so that at least left and right images are not distorted as much as possible.
In the above, the technical idea is to form so that the distance feeling in the vehicle width direction can be directly felt as much as possible, and the field of view far away from the rear can be confirmed by the plane mirror portion 1a, and the distance feeling in the vehicle width direction near the rear can be confirmed. The technical idea is to make it possible to feel relatively accurately.

Further, as another conventional example, the actual development number is 59.
There is a publication of -104102. An automobile curved mirror of the technique described in the publication is formed by a single convex reflecting mirror 01 such as an automobile rearview mirror as shown in FIGS. 13 (A) and 13 (B), and is projected on a mirror surface 02. A distance display scale 04 capable of grasping the distance between another vehicle and the vehicle body 03 of itself is provided on the mirror surface 02, and the distance display scale 04 crosses a horizontal direction line 06 and a front-back direction line 07 into a number of hyperbolic lines. It is composed of lines.

Then, as shown in FIG. 13 (A), one of each of the left-right direction line 06 and the front-rear direction line 07 is made to coincide with the front part 09 and the side part 010 of the own vehicle body. Is set as a reference line 08 by, for example, when a following vehicle approaches while driving or the like, the horizontal direction 06
The front-rear direction 07 allows the front-rear, left-right inter-vehicle distances L1 and L2 between the following vehicle 012 and its own vehicle body 03 to be visually recognized.

With these numerous hyperbolic cross lines, it is possible to recognize the distances L1 and L2 to the left and right of the other vehicle 012 with respect to the own vehicle body 03. In addition, the distance display scale 04 is configured such that the line spacing of the left-right direction line 06 and the front-back direction line 07 is gradually narrowed toward the upper left and right sides of the mirror surface 02.
The image which is distorted to 2 is corrected in a plane so that the distance can be accurately recognized.

[0008] Therefore, the above-mentioned actual exploitation 59-1041
The technique described in Japanese Unexamined Patent Publication No. 02-2004 discloses a distance scale 04 composed of a number of hyperbolic cross lines on a mirror surface 02 of a single convex mirror.
Is provided on the side of the cab of a large vehicle such as a truck, the mirror is curved and the sense of distance is hard to grasp, and even when the vehicle looks close, the distance scale 04 can accurately measure the distance. When the other vehicle 012 approaches the own vehicle 03 overtaking, or on the contrary, the own vehicle 03 overtakes the other vehicle 012, the other vehicle 012 When one's own vehicle 03 is approaching, it is possible to visually recognize the position of the other vehicle 012 with respect to the one's own vehicle 03, especially in front of a large vehicle reflected on a mirror surface 02 of a truck or the like. The reference line 08 is set in accordance with the cab front portion 09 of the vehicle so that the vehicle body distance between traveling vehicles passing each other during traveling can be visually recognized, and moreover, it is configured by the single convex mirror. It is an idea.

[0009]

However, in the technique described in Japanese Utility Model Laid-Open No. 58-166601 described above, there is no curvature in the horizontal direction from the plane mirror portion 1a as described above, and a convex curvature only in the vertical direction. Since it is connected to the convex-curved mirror portion 1b having a curved line, distortion appears in the image projected between the two portions 1a and 1b, and there is no sense of continuity and it is hard to see.

Further, since the convex curved mirror portion 1b has no curvature in the vehicle width direction, the view in the vehicle width direction cannot be obtained unless the convex curved mirror portion 1b has the same size as the plane mirror portion 1b. Since 1b is inevitably large, the overall size of the mirror body 01 is large and the weight cannot be reduced.
Moreover, the cost cannot be reduced. In addition, the technique described in Japanese Utility Model Laid-Open No. 59-104102 described as another conventional example has a single convex or concave mirror surface 02. In this single mirror surface 02, another vehicle 012 Car body 0
It is configured so that the distance interval between the vehicle and the vehicle 3 when passing each other can be visually recognized during traveling, and as described above, it is necessary to provide a large number of hyperbolic cross lines.

Since the distance between the two is recognized by the cross line, the grid-like cross line may be an obstacle and reduce the visibility. The present invention has been devised in view of such a problem, and a single curvature curved surface portion is smoothly connected to a gradually changing curvature curved surface portion, and at least a part of the rear wheels or a part of the front wheels of the vehicle or the vehicle. It is an object of the present invention to provide a compound curved surface mirror for a vehicle in which the lower side of the sidele portion can be visually recognized.

[0012]

For this reason, the compound curved surface mirror for a vehicle according to the first aspect of the present invention is provided with a gradually changing curvature curved surface portion having a gradually decreasing radius of curvature below the single curvature curved surface portion. The single curvature curved surface portion and the gradual curvature curved surface portion are configured to be visually distinguishable, and the single curvature curved surface portion reflects the rear of the vehicle and the gradual curvature curved surface portion near the rear wheel of the vehicle. It is characterized by being formed so as to be reflected.

According to a second aspect of the present invention, there is provided the compound curved mirror for vehicle according to the first aspect, wherein the height of the gradually changing curvature curved surface portion is about 10 to 40% of the height of all mirror surfaces. Is characterized. According to a third aspect of the present invention, there is provided a compound curved surface mirror for a vehicle, wherein a gradually changing curvature curved surface portion having a gradually decreasing radius of curvature is provided above and below the single curvature curved surface portion, and the single curvature curved surface portion and the gradually changing curvature curved surface portion are provided. The single curvature curved surface portion reflects the rear and the lower gradually changing curvature curved surface portion is formed so as to reflect the rear wheel or the vicinity of the rear wheel of the vehicle. It has a feature.

According to a fourth aspect of the present invention, there is provided a gradual curvature curved surface portion having a gradually decreasing radius of curvature below the single curvature curved surface portion. Configured so that the curved surface part can be visually distinguished
By allowing the driver to view the rear wheel or the vicinity of the rear wheel of the vehicle on the gradually changing curvature curved surface portion as viewed from the driver's seat, the single curvature curved surface portion is formed to reflect the vehicle rearward. It has a feature.

According to a fifth aspect of the present invention, there is provided a curved surface curved portion for gradually decreasing the radius of curvature below the single curved surface portion. It is characterized in that it is provided with an identification means for identifying the boundary with the curved surface of varying curvature. According to a sixth aspect of the present invention, there is provided a compound curved mirror for a vehicle, wherein a gradually changing curved surface portion having a gradually decreasing radius of curvature is provided below a single curvature curved surface portion, and the gradually changing curved surface portion has a rear wheel of a vehicle. It is characterized by having a display showing.

According to a seventh aspect of the present invention, there is provided a compound curved surface mirror for a vehicle, wherein a gradually changing curved surface portion having a gradually decreasing radius of curvature is provided below a single curved surface portion, and a mark is provided on the gradually changing curved surface portion. It is characterized in that the driver matches the rear wheel of the vehicle with the mark when viewed from the driver's seat so that the single curvature curved surface portion is formed so as to project the rear side of the vehicle.

According to another aspect of the present invention, there is provided a compound curved mirror for a vehicle, wherein a gradually changing curved surface portion having a gradually decreasing radius of curvature is provided below the single curvature curved surface portion, and the gradually changing curvature curved surface portion and the single curvature curved surface portion. The shape is different from that of the variable curvature curved surface portion, and the single curvature curved surface portion is formed so as to reflect the rear of the vehicle and the gradually changing curved surface portion is formed so as to reflect the vicinity of the rear wheel of the vehicle.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment) An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an explanatory view showing an embodiment in which the vehicle composite curved mirror of the present invention is applied to a passenger car door mirror, FIG.
FIG. 2 is an explanatory view showing the mirror body of FIG. 1, (A) is a front view showing the front surface of the mirror body, (B) is a side view showing the side surface of FIG. 2 (A), and FIG. 3 is the mirror body of FIG. 4 is an explanatory view showing a case where a distance scale is applied to the gradually changing curvature curved surface portion, FIG. 4 is an explanatory view showing a case where an identification mark is applied to the ground contact point of the rear wheel on the gradually changing curvature curved surface portion of FIG. 1, and FIG. It is explanatory drawing which shows the application example of FIG. 1, (A) is a perspective view of the compound curved surface mirror for vehicles, (B) is FIG.
A longitudinal sectional view of the mirror body taken along line 5 (B) -5 (B) of FIG.
FIG. 6 is an explanatory view similar to FIG. 5, (A) is a perspective view of a compound curved mirror for a vehicle, (B) is a vertical cross-sectional view of the mirror body taken along the lines of FIGS. 6 (B) -6 (B), 7 is an explanatory view showing a case where the vehicle composite curved mirror of FIG. 6 is applied to a vehicle, and FIG. 8 is an explanatory view schematically showing the configuration of the gradually changing curvature curved surface portion of the mirror body mirror surface of FIG. 8 is an explanatory view showing a vertical section taken along line 9A-9A in FIG. 8, FIG. 10 is an explanatory view showing a vertical section taken along line 10A-10A in FIG. 8, and FIG. 11 shows an identification mark on the mirror body shown in FIG. It is explanatory drawing which shows a case, (A) is explanatory drawing which shows the case where the periphery and boundary line of a mirror are marked, (B)
FIG. 12 is an explanatory view showing a case where marking is made on the single curvature curved surface side of FIG. 11 (A).

As shown in FIG. 1, one end of the door mirror is supported by the door 20, and the other end thereof is provided with a pillar 26 of a door mirror that supports the support frame 24 of the mirror body 22. An upper portion of the mirror body 22 is provided with a single curvature curved surface portion 28 which is formed so as to meet the regulations according to the regulations of each country and allows a rear view to be visually recognized. The single curvature curved surface portion 28 has a smooth lower surface. The gradually changing curvature curved surface portion 30 is arranged so as to be connected to each other.

The shape of the gradually changing curvature curved surface portion 30 is effective even if it is a horizontally long rectangular shape as shown by the chain double-dashed line 32 in FIG. 1, but in the case of this embodiment, as shown by the solid line in FIG. It is formed in a triangular shape. In this way, the gradually changing curvature curved surface portion 3
If 0 is made small, the weight can be reduced and the cost can be reduced.

Further, as shown by the chain double-dashed line 34 in FIG.
It suffices that at least a part of the vicinity of the rear wheel of the vehicle or the lower side sill in the vicinity of the front of the rear wheel is formed so as to be visible. For example, as shown in FIG. By omitting the height H2 with respect to the height H1, it is possible to further reduce the weight. 2 (A),
As shown in (B), the ratio of the heights H3 and H4 of the single curvature curved surface portion 28 and the gradually changing curvature curved surface portion 30 of the mirror body 22 in the vertical direction of the vehicle is (H4) / [(H3) + (H
4)] ≤ about 10 to 40%.

Since the present embodiment is configured as described above, the driver is seated in the driver's seat and is in the driver's favorite position, that is, as shown in FIG. The vehicle composite mirror 25 is set so that at least a part of the wheel 38 or the vicinity thereof can be visually recognized on the gradually changing curvature curved surface portion 30. After that, when the driver runs the vehicle, when the vehicle moves backward, for example, when the gutter 40 of the road is visually recognized on the gradually changing Kiku rate curved surface portion 30 as shown in FIG. The steering wheel operation can be performed while recognizing the wheel 38 reflected in the curved surface portion 30 and very easily visually recognizing it so as not to fall into the side groove 40.

Further, the rear wheel 38 is provided on the gradually changing curvature curved surface portion 30.
It is not limited to the vicinity, but if it is configured to be visible up to about 1 m in front of the wheel 38, or if the lower part of the vehicle body is formed so that, for example, the lower part of the side sill 41 of the vehicle body can be visually recognized, Since it is visible when there are objects such as stones and blocks for building materials, it is possible to prevent these objects from coming into contact and being damaged.

Further, as shown in FIG. 3, the gradually changing curved surface portion 3
0 is graduated from the front to the rear of the vehicle at appropriate intervals, and in the case of the present embodiment, 0 to 0.5
The distance scale 42 of 2 m in increments of m is marked M by an identification means such as a fluorescent material, silk screen printing, tampo printing, shot blasting and the like. Also, when the driver is seated in the driver's seat, 0 m of the above marking M
When the running of the vehicle is started after the vehicle is adjusted to the position of, for example, the substantially grounding point of the rear wheels of the vehicle or the rear end of the vehicle, as shown in FIG. The presence of 1 m after the vehicle grounding point (0 m set above) can be visually recognized very easily, so that the vehicle can be easily retracted.

Further, since the distance scale line of this embodiment is formed by one line, the image of the gradually changing curved surface portion 30 is not damaged. Further, when the vehicle body is black and the road is black like asphalt, or when driving at night, it is difficult to visually recognize the vehicle body and wheels on the gradually changing curved surface portion 30 as described above. As shown in the figure, before driving the vehicle in the daytime or under illumination, for example, confirm the image position of the gradually changing curvature curved surface portion 30 of the grounding point of the wheel that has a high frequency of specification, and visually confirm it even without illumination. If possible, for example, by using a fluorescent paint or the like, if an appropriate identification mark on the rear wheel of the vehicle that can be identified at the image position of the grounding point is marked, the grounding point of the wheel can be identified by the identification mark. Even when it is not actually visible in the image, this identification mark can be applied to the actual position of the wheel to confirm the ground contact point, so that the distance from the identification mark to the gutter can be recognized, The driving operation It can be carried out easily.

Therefore, the above position can be accurately confirmed even in a situation where it is difficult to confirm the vehicle body in a dark place. Further, as described above, the gradually changing curvature curved surface portion 30 is provided below the single curvature curved surface portion 28, but if it is provided only above the single curvature curved surface portion 28 as shown in FIG. By expanding the upper field of view of the vehicle, the roof rack shown in FIG. 7, the ski carrier 45, the luggage on the rear carrier such as a truck (not shown), and the vehicle height limit at the entrances of tunnels, gates, parking lots, garages, etc. It is possible to confirm the height above which the vehicle can pass by.

Further, as shown in FIG. 6, if the gradually changing curved surface portions 30 are provided on both the upper and lower portions of the single curvature curved surface portion 28, as shown in FIG. Since the downward visual fields E1 and E2 can be simultaneously expanded, the blind spot visual field can be reduced, and it is possible to prevent derailment of the groove or the like, contact with the various obstacles, and load collapse.

Further, as shown in FIG. 8, the curvature center of the gradually changing curvature curved surface portion 30 exists on the single curvature curved surface portion 28 side beyond the boundary line 52 in the mirror body 22 of the embodiment of the present invention. As shown in FIG. 8, the boundary lines 52 of the two mirror surfaces are connected in a radial manner from the center of curvature 48 of the single curvature curved surface portion 28 to the mirror surface of the gradually changing curvature curved surface portion 30 in a radial manner. Since it is formed as described above, the drooling of the image near the boundary line 52 does not change extremely and can be visually recognized as a whole without any discomfort, so that the driving can be performed very easily.

The radius of curvature of the single curvature curved surface portion 28, which is also related to the size of the mirror body 22, is about 400 m.
It is m to 2000 mm, and it becomes difficult to see unless the minimum curvature diameter of the gradually changing curvature curved surface portion 30 is about 50 mm or more. Preferably, if the minimum curvature diameter is about 70 mm to 300 mm, the above-described effects can be achieved. Next, the setting of the radius of curvature of the gradual curvature curved surface portion 30 will be described. Since the gradual curvature surface portion 30 is used under limited conditions such as when retreating, and is not often used during normal traveling, The protrusion from the vehicle body should have a mirror surface area that is as small as possible in terms of increased running resistance.

Therefore, it is preferable to make the curvature as small as possible to obtain a small mirror surface while ensuring the visual field. However, it is difficult to see if the curvature is too small,
The gradual curvature curved surface portion 30 is viewed when continuously looking at the rearward and downward situation such as when retreating. For this reason, the curvature of the gradual curvature surface curved portion 30 can be observed by staring at the mirror surface to see a reflection image. The minimum radius of curvature is about 50 mm, preferably about 70 mm to 3
It is set to 00 mm.

The setting of the radius of curvature of the single curvature curved surface portion 28 will be described. By increasing the single curvature, the reflected image is close to the actual size and a natural field of view can be obtained, but the field of view is narrow. Therefore, the maximum curvature is about 200
It is set to 0 mm or less, and by making the single curvature small, it is possible to reduce the uncomfortable feeling at the connection portion with the gradually changing curvature curved surface portion 30, and if it is smaller than this value, backward visibility is deteriorated. The minimum single curvature is about 400 mm.

The center of the radius of curvature of the gradual curvature curved surface portion 30 is offset on the line of the radius of curvature of the single curvature curved surface portion 28 or outside the radius of curvature line of the single curvature curved surface portion 28. It is formed so as to exist at an offset position, and is formed so as to be connected with a smooth surface in the boundary region, thereby achieving the above object.

Next, the mirror surface of the gradually changing curvature curved surface portion 30 described in each of the above embodiments will be described in more detail with reference to FIGS. As shown in FIG. 8, the gradually changing curvature curved surface portion 30 has a radius of curvature Ra, Rb, R on the mirror center line 60 at the positions of the dividing lines A, B, C, D with respect to the longitudinal direction R.
While gradually changing to c and Rd, the center of curvature Re of the gradually changing curved surface portion 30 with respect to the lateral direction R has a value as shown in FIGS. Radius of curvature Ra
The curvature radius center Rf of the next gradual curvature curved surface portion 30 is formed so as to lie on the curvature diameter Re immediately adjacent to the preceding one, and the curvature of the next gradual curvature curved surface portion 30 is formed. The radius center Rg is formed so as to lie on the curvature radius Rf adjacent to the previous one, and the curvature radius center Rh of the gradually changing curvature curved surface portion 30 exists on the curvature radius Rg adjacent to the previous one. Are formed, and the above Ra to Rh are configured to have the following relationship.

Ra>Rb>Rc> Rd Ra>Re>Rf>Rg> Rh The gradually changing curvature curved surface portion 30 formed as described above is curved in a minute section in both the longitudinal direction R and the lateral direction R. It changes and gradually changes, and the changes of the curves are smoothly connected so as to have a common line.
The mirror body 22 is an aspherical surface as a whole, is a so-called egg-shaped surface, and has a shape such that a substantially spherical surface portion does not exist.

However, the shape is not limited to the above-mentioned shape, and for example, the curvature diameter of the gradually changing curvature curved surface portion 30 may be gradually changed in the vertical direction and the horizontal direction. It may be one that smoothly changes gradually. Further, the boundary line 52 between the single curvature curved surface portion 28 and the gradually changing curvature curved surface portion 30 may be invisible because it is formed by an imaginary line, but as shown in FIGS. 11 (A) and 11 (B). The boundary line 52 may be provided with a marking S1 printed, for example, by the fluorescent material described above, and at least one of the single curvature curved surface portion 28 and the gradually changing curvature curved surface portion 30 may be formed as a frame edge like the above. By providing the marking M so that it is possible to identify which is the conventional mirror used for normal traveling, that is, the single curvature curved surface portion 28 on the side that is normally used in this embodiment, the visibility during traveling is improved. On the other hand, it is possible to respond immediately and drive, and it is possible to reduce driver fatigue.

Further, by making the boundary line 52 horizontal, it is possible to eliminate the focus shift of the eyes and reduce fatigue. In addition, as for the marking M of the frame shape and the boundary line, as shown in FIG. 11A, the identification mark S2 on the single curvature curved surface portion 28 and the identification mark S of the gradually changing curvature curved surface portion 30.
It is indicated by 3.

Further, in FIG. 11B, the frame-shaped marking M has the identification mark S3 only on the single curvature curved surface portion 28.
And the boundary line 52 is indicated by the identification mark S1. If the compound curved surface mirror for a vehicle of the present invention is applied to the above-mentioned vehicle front under mirror, the visible range is expanded and the same operational effect as described above can be obtained.

Further, since the embodiment of the present invention is formed as described above, the same operational effects as those of the above embodiment can be obtained even with the configuration described below. That is, in the embodiment of the present invention, for example, the 0 mm position of the distance scale formed so as to extend from the front side to the rear side of the vehicle is gradually changed so that it can be aligned with the tire ground contact point and the vehicle rear end portion such as the rear bumper. The curved surface may be marked with the distance scale.

The above-mentioned distance scale is, for example, 0 mm, which is the same as the above-mentioned distance scale formed so as to extend upward from the roof of the vehicle or the luggage on which the ski carrier is mounted.
The distance scale and the identification mark may be marked M on the gradually changing curved surface portion so that the position can be adjusted to the maximum ground clearance of the luggage or the like. Further, the marking is not limited to the distance scale, and the identification mark is the marking M on the gradually changing curvature curved surface portion so that the identifiable mark can be easily identified especially at the tire ground contact point and other parts that are frequently used. It may be configured as follows.

Further, the gradually changing curved surface portion is formed so that at least part of the front wheels or at least part of the rear wheels of the vehicle and the lower part of the vehicle body in an area of about 1 m in front of the wheels can be visually recognized. It may be configured as follows. Also, it is difficult to see that the single curvature curved surface portion has a curvature diameter of about 400 mm to 2000 mm, and the gradually changing curvature curved surface portion has a minimum curvature diameter of about 50 mm or more, preferably about 70 mm to 300 mm. You may comprise.

[0041]

As described in detail above, according to the vehicle curved surface mirror of the present invention as defined in claim 1, a gradually changing curvature curved surface portion having a gradually decreasing radius of curvature is provided below the single curvature curved surface portion. The single curvature curved surface portion is configured to be visually distinguishable from the single curvature curved surface portion, the single curvature curved surface portion reflects the rear of the vehicle, and the gradually changing curved surface portion is the rear wheel of the vehicle. Since it is formed to reflect the vicinity, the position and range of the single curvature curved surface portion and the gradually changing curvature curved surface portion can be clearly recognized, which facilitates the driving operation during traveling and reduces fatigue. be able to.

Further, since the rear wheel can be enlarged and the area of the gradually changing curvature curved surface portion can be appropriately reduced, the weight and the cost can be reduced. In addition, the blind spot area due to the outer shape of the vehicle complex curved mirror for the driver can be reduced, so that the vehicle can be easily driven. According to the vehicle curved surface mirror of the present invention described in claim 2, in the structure described in claim 1, the height of the gradually changing curvature curved surface portion is about 10 times the height of all mirror surfaces.
Since it is formed so as to be 40%, the legal area can be used while satisfying the single curvature curved surface portion while traveling, and the gradually changing curvature curved surface portion has a supplementary role. As a result, the single curvature curved surface portion and the gradually changing curvature curved surface are smoothly connected to each other without causing any discomfort, and the vehicle can be easily driven.

According to the vehicle curved surface mirror of the present invention as defined in claim 3, there is provided a gradually changing curvature curved surface portion having a gradually decreasing radius of curvature below the single curvature curved surface portion. And the gradual curvature curved surface portion can be visually distinguished from each other, and the single curvature curved surface portion reflects the rear side and the lower gradual curvature curved surface portion reflects the rear wheel or the vicinity of the rear wheel of the vehicle. Since it is formed, it is possible to expand the field of view in the vicinity of the wheel during driving, it is possible to prevent contact with, for example, the curb of the road, and also the single curvature curved surface portion and the gradually changing curvature curved surface portion. The visual identification becomes easy, and the driver's fatigue can be reduced.

According to the vehicle curved surface mirror of the present invention as defined in claim 4, there is provided a gradually changing curvature curved surface portion below the single curvature curved surface portion, the radius of curvature of which gradually decreases. And the gradual curvature curved surface portion are configured to be visually distinguishable, and the driver can see the rear wheel or the vicinity of the rear wheel of the vehicle on the gradual curvature curved surface portion as seen from the driver's seat. Since the single curvature curved surface portion is formed to reflect the rear of the vehicle, the single curvature curved surface portion reflects the rear of the vehicle and the gradually changing curved surface portion reflects the vicinity of the rear vehicle of the vehicle at the start of driving. If set, the field of view near the wheels can be expanded during driving, and the positions and ranges of the single curvature curved surface portion and the gradually changing curvature curved surface portion can be clearly recognized, so driving The fatigue of the person can be reduced.

Since the positions and ranges of the single curvature curved surface portion and the gradually changing curvature curved surface portion can be clearly recognized, the driving operation can be facilitated during running and fatigue can be reduced.

According to a fifth aspect of the present invention, there is provided a gradual-curvature curved surface portion having a gradually decreasing radius of curvature below the single-curvature curved surface portion. Since a boundary between the curved surface and the gradually changing curved surface portion is provided, the position and range of the single curved surface portion and the gradually changing curved surface portion can be clearly recognized. The operation is easy and fatigue can be reduced.

According to the compound curved surface mirror of the present invention as defined in claim 6, a gradually changing curved surface portion having a gradually decreasing radius of curvature is provided below the single curvature surface portion, and the gradually changing curved surface portion is provided. Has a display showing the rear wheel of the vehicle, the position of the rear wheel can be visually recognized by the image of the display reflected on the gradually changing curvature curved surface portion, so that the visibility of the rear wheel is improved and the driving operation is improved. It can be done easily.

According to the vehicle curved surface mirror of the present invention as defined in claim 7, a gradually changing curved surface portion having a gradually decreasing radius of curvature is provided below the single curved surface portion, and the gradually changing curved surface portion is provided. Since the single curved surface portion is provided so that the driver can match the rear wheel of the vehicle with the mark when viewed from the driver's seat, the single curvature curved surface portion is formed to reflect the rear of the vehicle. By setting the one curvature curved surface portion so that the rear of the vehicle is reflected and the gradually changing curvature curved surface portion is reflected so that the rear of the vehicle and the vicinity of the vehicle are reflected, it is possible to expand the field of view near the wheel while driving, and Since the positions and ranges of the one curvature curved surface portion and the gradually changing curvature curved surface portion can be clearly recognized, the fatigue of the driver can be reduced.

Further, since the positions and ranges of the single curvature curved surface portion and the gradually changing curvature curved surface portion can be clearly recognized, the driving operation during traveling becomes easy and fatigue can be reduced. According to the composite curved mirror for a vehicle of the present invention described in claim 8, there is provided a gradually changing curvature curved surface portion below the single curvature curved surface portion, the radius of curvature of which gradually decreases. Since the shape of the curved surface is different from that of the curved surface, the single curved surface is formed so that the rear of the vehicle is imaged and the gradually curved surface is formed in the vicinity of the rear wheel of the vehicle. Since it is possible to visually recognize the complex curved surface mirror by visually observing the shape of the single curvature curved surface portion and the gradually changing curvature curved surface portion, it is possible to easily perform a driving operation and reduce a feeling of fatigue.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment in which a compound curved mirror for a vehicle of the present invention is applied to a door mirror of a passenger car.

2A and 2B are explanatory views showing the mirror body of FIG. 1, where FIG. 2A is a front view showing the front surface of the mirror body, and FIG. 2B is a side view showing the side surface of FIG. 2A.

FIG. 3 is an explanatory diagram showing a case where a distance scale is applied to a gradually changing curved surface portion of the mirror body of FIG.

FIG. 4 is an explanatory view showing a case where an identification mark is provided on a ground contact point of a rear wheel on the gradually changing curved surface portion of FIG.

5A and 5B are explanatory views showing an application example of FIG. 1, FIG. 5A is a perspective view of a compound curved mirror for a vehicle, and FIG.
FIG. 5 is a vertical cross-sectional view of the mirror body taken along line 5 (B) -5 (B) of FIG.

FIG. 6 is an explanatory view similar to FIG. 5, in which (A) is a perspective view of a vehicle compound curved mirror, and (B) is 6 (B)-in FIG. 6 (A).
FIG. 6B is a vertical cross-sectional view of the mirror body taken along line 6 (B).

FIG. 7 is an explanatory diagram showing a case where the vehicle composite curved mirror of FIG. 6 is applied to a vehicle.

FIG. 8 is an explanatory view schematically showing the configuration of a gradually changing curved surface portion of the mirror body mirror surface of FIG. 2;

9 is an explanatory view showing a vertical section taken along line 9A-9A in FIG.

10 is an explanatory diagram showing a vertical cross section taken along line 10A-10A in FIG.

11A and 11B are explanatory diagrams showing a case where an identification mark is marked on the mirror body of FIG. 1, FIG. 11A is an explanatory diagram showing a case where the periphery and the boundary line of the mirror body are marked, and FIG.
It is explanatory drawing which shows the case where marking is performed on the single curvature curved surface side of (A).

12A and 12B are explanatory views of a reflecting mirror of a conventional example, FIG. 12A is a perspective view showing a partial cross section of the reflecting mirror, and FIG. 12B is an enlarged explanatory view showing a usage state of FIG. 12A.

13A and 13B are explanatory diagrams of another conventional curved mirror, FIG. 13A is a perspective view of the curved mirror, and FIG.
It is an expanded sectional view which shows the use condition of (A).

[Explanation of symbols]

 20 Door 22 Mirror 24 Support 26 Pillar 28 Single Curvature Curved Surface 30 Gradual Curvature Curved Surface 38 Wheel 40 Gutter 42 Distance Scale 44 Gutter 48 Curvature Center 50 Radial 52 Boundary Line 60 Mirror Centerline L1 Left-Right Distance L2 Inter-vehicular distance

Front page continuation (72) Inventor Taketo Hayashi 5-3-8 Shiba, Minato-ku, Tokyo Within Mitsubishi Motors Corporation (72) Inventor Hiroaki Makihara 4-21-1 Shimomaruko, Ota-ku, Tokyo Mitsubishi Motors Engineering Within the corporation

Claims (8)

[Claims] 1. A gradually changing curved surface portion having a gradually decreasing radius of curvature is provided below the single bending curved surface portion so that the single curvature curved surface portion and the gradually changing curved surface portion can be visually distinguished. A composite curved mirror for a vehicle, wherein the single curvature curved surface portion is formed so as to reflect the rear of the vehicle and the gradually changing curvature curved surface portion is formed so as to reflect the vicinity of the rear wheel of the vehicle. 2. The height of the gradually changing curved surface portion is about 10 to 40% of the height of all mirror surfaces.
The described compound curved mirror for vehicle. 3. A gradual curvature curved surface portion having a gradually decreasing radius of curvature is provided above and below the single curvature curved surface portion so that the single curvature curved surface portion and the gradual curvature curved surface portion can be visually distinguished. A compound curved mirror for a vehicle, characterized in that the single curvature curved surface portion is formed so as to reflect the rear, and the lower gradually changing curvature curved surface portion is formed so as to reflect the rear wheel or the vicinity of the rear wheel of the vehicle. 4. A gradual curvature curved surface portion having a gradually decreasing radius of curvature is provided below the single curvature curved surface portion so that the single curvature curved surface portion and the gradual curvature curved surface portion can be visually distinguished. The single curvature curved surface portion is formed so as to reflect the rear of the vehicle by allowing the driver to view the rear wheel or the vicinity of the rear wheel of the vehicle on the gradually changing curved surface portion when viewed from the driver's seat. A compound curved mirror for vehicles, which is characterized in that 5. A discriminating means for discriminating a boundary between the single-curved curved surface portion and the gradually-curved curved surface portion is provided below the single-curved curved surface portion, and a gradual-curved curved surface portion having a gradually decreasing radius of curvature is provided. A compound curved mirror for a vehicle, characterized by being provided. 6. A gradually changing curvature curved surface portion having a gradually decreasing radius of curvature is provided below the single curvature curved surface portion, and the gradually changing curvature curved surface portion is provided with a display indicating a rear wheel of the vehicle. A compound curved mirror for vehicles. 7. A gradual curvature curved surface portion having a gradually decreasing radius of curvature is provided below the single curvature curved surface portion, and a mark is provided on the gradual curvature curved surface portion so that the driver can see the mark from the driver's seat. A compound curved mirror for a vehicle, wherein the single curvature curved surface portion is formed so as to reflect the rear of the vehicle by making the rear wheels of the vehicle coincide with each other. 8. A gradual curvature curved surface portion having a gradually decreasing radius of curvature is provided below the single curvature curved surface portion, and the shapes of the single curvature curved surface portion and the gradual curvature curved surface portion are different from each other. A compound curved mirror for a vehicle, wherein the one curvature curved surface portion is formed so as to reflect the rear of the vehicle and the gradually changing curvature curved surface portion is formed so as to reflect the vicinity of the rear wheel of the vehicle.