JPS6324850B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stay support portion of a door mirror.

As shown in Figure 1, the door mirror A protrudes to the side, so it should be rotated to the position indicated by the dotted line when the vehicle is parked so as not to disturb passersby when the vehicle is parked, and when the vehicle is parked in the garage. . Therefore, the stay b of the door mirror A frequently rotates with respect to the stay base attached to the door. This type of door mirror A has a structure as shown in FIG. That is, there is a through hole 2 in the center of the top part 1.
A cylindrical concave portion 5 provided in a stay b that supports a door mirror portion a is fitted into a stay base c having a cylindrical portion 4 having an annular end plate portion 3 having an annular shape. A cylindrical shaft 7 having a male thread cut on the outer periphery is screwed and fixed through the bottom 6, and the cylindrical shaft 7 is inserted into the through hole 2.
through the cylindrical portion 4, and insert the concave portion 5 into the cylindrical portion 4.
Three balls d are interposed at equal pitches between the bottom 6 of the cylindrical shaft 7 and the end plate portion 3, and between the flange portion 8 provided at the lower end of the cylindrical shaft 7 and the inside of the cylindrical portion 4. The stay b is rotatably connected to the stay base c by tensioning a coil spring 9 on the stay base c. Note that 10 in Figure 2 indicates the outer panel of the door on the driver's seat side.

Therefore, when holding the door mirror part a and rotating the stay B on the stay base C, the material of both the stay B and the stay base C is usually aluminum or zinc die-cast alloy, and the ball interposed between them Since ball d is a hard steel ball, the rolling part of ball d will be damaged as shown in Figure 3, making it difficult for door mirror part a to support correctly. A is to prevent the vibration of the car body from being transmitted to the door mirror part a while driving and vibrating in small increments, making it difficult to see the mirror.
A gap m is provided between the inner circumferential wall 5' of the cylindrical concave part 5 and the outer circumferential wall 4' of the cylindrical part 4 to reduce the portion where vibrations are directly transmitted from the stay base c to the stay b, The elasticity of the coil spring 9 is designed to absorb vibrations as much as possible, but the door mirror A has a relatively large door mirror portion a, and the wind pressure hitting the back of the door mirror portion a is also relatively large, so vibrations can be absorbed as much as possible. There were drawbacks such as the background being difficult to see. An object of the present invention is to provide a stay support portion for a door mirror A that can eliminate the above-mentioned drawbacks.

Based on FIG. 4, the structure of one embodiment of the stay support part of the door mirror according to the first invention will be described.A cylindrical part has a top part 1 and an annular end plate part 3 having a through hole 2 in the center. Stay base c with 4
The cylindrical recess 5 provided in the stay b of the door mirror A is fitted into the cylindrical recess 5, and the cylindrical shaft 7, which is fixed by penetrating the bottom 6 of the recess 5, is inserted into the cylindrical part through the through hole 2. 4, a coil spring 9 is stretched between the flange portion 8 provided at the lower end of the cylindrical shaft 7 and the inside of the cylindrical portion 4, and the stay b is rotated to the stay base c. In the freely connected door mirror A, the cylindrical portion 4 has an annular end plate portion 11 at the top, and a skirt portion 1 is provided on the outer periphery of the end plate portion 11.
A cylindrical body 15 made of a synthetic resin having a cylindrical body 15 having a cylindrical body 2 is covered with a cylindrical body 15 made of a synthetic resin.
3 with the tongue pieces 13' exposed and fixed, and approximately three steel balls d are interposed at equal pitches between the bottom 6 of the recess 5 and the annular plate 13. The radius of the ball d or more (r+l) is at the bottom 6 of the concave part 5.
The annular plate 13 is provided with ball fitting holes 16 at the same pitch as the balls d. Note that a mirror remote control wire group 18 is passed through the inside of the cylindrical shaft 7.

Since this embodiment has the above-mentioned configuration, when the door mirror part a is held and rotated as shown in FIG. 1, the ball d is deeply immersed in the bottom 6 of the concave part 5 of the stay b. Therefore, the ball d is lifted up from the ball fitting hole 16 of the metal annular plate 13 against the elasticity of the coil spring 9, the stay b rotates, and when the ball d rotates by one pitch p, each ball d
Since they are of equal pitch p, they fit into the next ball fitting hole 16 of the metal annular plate 13 and are secured at the rotational position, and do not move suddenly. In addition, ball d is 1 pitch p
Even if the door mirror A does not rotate, the elasticity of the coil spring 9 will stop it at the retracted rotation position.
can be fine-tuned.

Furthermore, as shown in FIG. 2, conventionally, the stay b and the stay base c are connected elastically by a coil spring 9 with a gap m, but the parts where they are in contact with each other are Since it is a contact between rigid bodies, so to speak, it is difficult to absorb vibrations, but in this embodiment, since the synthetic resin cylindrical body 15 is interposed, the rigid body contact is relaxed, and together with the elastic coupling by the coil spring 9. Therefore, vibrations transmitted from the fuselage side and those due to wind pressure are both relaxed and absorbed, and since the synthetic resin skirt portion 12 is inserted into the gap m, large vibrations are absorbed.

In addition, the annular plate 13 that comes into contact with the ball d is made of stainless steel or steel with a hard chrome plating on the surface, so it is much harder than soft materials such as aluminum or zinc, and therefore the stay b cannot be rotated frequently. However, the annular plate 13 will not be damaged.

Since the first invention has the above-mentioned structural action, the annular plate 13 is not damaged even if the door mirror part a is rotated frequently, and the door mirror part a can be rotated frequently.
This has a particularly remarkable effect in that vibrations from the aircraft body are less likely to be transmitted to the vehicle, and the door mirror portion a is less likely to vibrate due to wind pressure.

Next, the configuration of the second invention will be explained based on an embodiment shown in FIG. A rib 17 is provided in a protruding manner.

Since this embodiment has the configuration as described above,
Since there are many ribs 17 on the outer periphery of the skirt portion 12 in the generatrix direction, which are more easily distorted than the cylindrical skirt portion 12, vibrations transmitted from the cylindrical portion 4 of the stay base c to the stay b can be well absorbed and alleviated. .

Since this invention has the above-described structural action, the synthetic resin cylindrical body 1 in the first invention
The vibration isolation and vibration absorption performance of No. 5 can be further improved.

Next, the structure of the third invention will be explained based on an embodiment shown in FIG. 12 is omitted, and instead, a synthetic resin annular body 12' is provided on the edge of the hole of the cylindrical concave portion 5 of the stay b.

Since this embodiment has the configuration as described above,
The annular body 12' suppresses and absorbs the large vibration of the door mirror part a caused by the vibration of the stay base c caused by the vibration of the vehicle body.

Since this invention has the above-mentioned structural action, compared to the synthetic resin cylindrical body 15 in the first and second inventions, the material is saved and manufacturing is easy, and the vibration-proofing effect is almost negligible. It has the same effect.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of how to handle the door mirror, Fig. 2 is a longitudinal cross-sectional view of the stay support part of a conventional door mirror, Fig. 3 is an explanatory diagram of the drawbacks of the stay support part of a conventional door mirror, and Fig. 4 1 is a vertical cross-sectional view of a main part in an embodiment of the stay support part of a door mirror according to the first invention, FIG. 5 is an enlarged vertical cross-sectional view of the holding structure of the ball d, and FIG. Synthetic resin cylindrical body 15 in the door mirror according to the invention of
and a perspective view of the metal annular plate 13, and FIG. 7 is a vertical cross-sectional view of the main parts of the door mirror stay support part according to the third invention, where 1 is the top, 2 is the through hole,
3 is an end plate part, 4 is a cylindrical part, 5 is a cylindrical concave part,
6 is the bottom, 7 is the cylindrical shaft, 9 is the coil spring, 1
1 is an end plate part, 12 is a skirt part, 12' is a synthetic resin annular body, 13 is an annular plate, 15 is a synthetic resin cylindrical body, 16 is a ball fitting hole, 17 is a rib, a is a door mirror part, b indicates the stay, and A indicates the door mirror.

Claims (1)

[Scope of Claims] 1. A stay base c having a cylindrical part 4 having an annular end plate part 3 having a through hole 2 in the center on the top part 1,
The cylindrical recess 5 provided in the stay b of the door mirror A is fitted, and the cylindrical shaft 7, which is fixed by penetrating the bottom 6 of the recess 5, passes through the through hole 2 and is inserted into the cylindrical part 4.
In the door mirror, the stay b is rotatably coupled to the stay base c by inserting the coil spring 9 between the lower end of the cylindrical shaft 7 and the inside of the cylindrical part 4. , in the cylindrical part 4,
An annular end plate 11 is provided at the top, a synthetic resin cylindrical body 15 having a skirt 12 is placed around the outer periphery of the end plate 11, and on the upper surface of the end plate 11, further,
A hard metal annular plate 13 is fixed, and steel balls d are interposed between the bottom 6 of the concave part 5 and the annular plate 13 at equal pitches p, and the balls d are particularly attached to the concave part. A stay support part for a door mirror, characterized in that the stay support part of a door mirror is recessed deeply into the bottom 6 of the mirror 5 by more than the radius r of the ball d, and the annular plate 13 is provided with a ball fitting hole 16 at the same pitch as the ball d. . 2. The stay base c has a cylindrical part 4 with an annular end plate part 3 having a through hole 2 in the center on the top part 1,
The cylindrical recess 5 provided in the stay b of the door mirror A is fitted, and the cylindrical shaft 7, which is fixed by passing through the bottom 6 of the recess 5, is inserted into the cylindrical portion 4 through the through hole 2.
In the door mirror, the stay b is rotatably coupled to the stay base c by inserting the coil spring 9 between the lower end of the cylindrical shaft 7 and the inside of the cylindrical part 4. , a synthetic resin cylindrical body 1 having an annular end plate part 11 at the top of the cylindrical part 4 and a skirt part 12 on the outer periphery of the end plate part 11;
Further, a hard metal annular plate 13 is fixed to the upper surface of the end plate part 11, and a steel ball d is placed between the bottom 6 of the recessed part 5 and the annular plate 13. The balls, etc. are interposed at equal pitches p, and the balls etc.
The annular plate 13 is provided with a ball fitting hole 16 at the same pitch as the ball d, and the skirt portion 12
A stay support portion for a door mirror, characterized in that a number of ribs 17 are protruded from the outer periphery in the generatrix direction. 3. The stay base c has a cylindrical part 4 with an annular end plate part 3 having a through hole 2 in the center on the top part 1,
The cylindrical recess 5 provided in the stay b of the door mirror A is fitted, and the cylindrical shaft 7, which is fixed by passing through the bottom 6 of the recess 5, is inserted into the cylindrical portion 4 through the through hole 2.
In the door mirror, the stay b is rotatably coupled to the stay base c by inserting the coil spring 9 between the lower end of the cylindrical shaft 7 and the inside of the cylindrical part 4. , a synthetic resin annular plate 11' is placed on the upper surface of the cylindrical portion 4, and a hard metal annular plate 13 is further fixed on the upper surface of the annular plate 11'. Steel balls d are interposed between the annular plate 13 and the annular plate 13 at regular pitches p, and the balls d are particularly immersed deep into the bottom 6 of the concave portion 5 by more than the radius r of the balls d. Board 13
has a ball fitting hole 16 at the same pitch as the ball d.
A stay support part for a door mirror, characterized in that a synthetic resin annular body 12' is provided on the edge of the hole of the concave part 5.