JPH0244589Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rearview mirror for a vehicle in which the angle of the mirror is adjustable.

[Prior art and its problems] In a conventional back mirror of this type, a spherical pivot is provided at the tip of a support shaft protruding from the front surface of the support, and a seat into which the pivot fits is provided on the rear surface of the mirror holder. A device in which the pivot is fitted and held in a seat is known from Japanese Utility Model Publication No. 60-34504. In this conventional example, the seat that fits and holds the pivot is made of synthetic resin, and the pivot is forcefully fitted onto this seat using the elastic force of the resin to obtain the required fitting torque. It was warm.

However, such a conventional back mirror,
When used under high temperatures such as summer sunlight or radiant heat, the ball joint has the problem of thermal deformation and a reduction in fitting torque. In addition, such ball joints may not always have accurate dimensions depending on the molding conditions, etc.
There was a problem in that the contact between the pivot and the seat tended to be uneven during assembly. As a result, the conventional type had the disadvantage that vibration (backlash) was likely to occur in the rearview mirror when the vehicle was running.

As a recent attempt to improve these drawbacks, as shown in Japanese Utility Model Publication No. 60-37857,
It has been proposed that a coil spring is used and the spring pressure is used to maintain a constant fitting torque of the ball joint. That is, in this proposed example, as shown in FIGS. 4A and 4B, the support 2
Mirror holder 2 is attached to the spherical seat 23 provided on the front of the
While pushing in the spherical wall part 22 provided on the rear surface of 1,
Press the hemispherical part 25 against the spherical seat 24, then fit the holding member 26 into the annular recess 27 of the hemispherical seat 24 from the front of the holder, then insert the coil spring 28 into the holding member 26, and tighten the screw 29. The hemispherical portion 25 was screwed into the hole 30 and was attached by pressing the hemispherical portion 25 against the hemispherical seat 24 using spring pressure. As mentioned above, this conventional example has a large number of parts, is very complicated and troublesome to assemble, and also requires the mirror 31 to be attached to the front of the holder after assembling the ball joint. There were working constraints.

[Purpose of the invention] The present invention has a small number of parts, eliminates the need for the assembly process described above, and can maintain a predetermined fitting torque using spring pressure even if there is thermal deformation of the spherical seat or variations in dimensions. The purpose of this paper is to propose a mounting structure for a rearview mirror that can obtain the following.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a spherical pivot at the tip of a support shaft protruding from the front surface of the support, and the pivot fits into the rear surface of the mirror holder. In the back mirror, a holder is provided with a concave surface in contact with the outer peripheral surface of the seat on the outside of the seat, and the holder is provided with a concave surface in contact with the outer peripheral surface of the seat. The purpose of the present invention is to propose a rearview mirror having a structure in which the holder is pressed against a spherical seat by a spring compressed between the holder and the support.

[Example] Hereinafter, the present invention will be specifically described based on the accompanying drawings. 1 and 2 show an embodiment in which the present invention is applied to an electric remote control mirror. In the accompanying drawings, reference numeral 1 denotes a mirror, and reference numeral 2 denotes a mirror holder 3 that holds the mirror 1, a mirror body that accommodates a mirror unit consisting of the mirror 1 and the mirror holder, and an actuator to be described later. Reference numeral 4 denotes a support body for the mirror holder, which in this embodiment is composed of an actuator unit incorporating a small electric motor for adjusting the reflection angle of the mirror 1. Further, a support shaft 5 is provided protruding from the front surface of the support body 3, and a spherical pivot 6 is provided at the tip of the support shaft. This pivot is fitted and held in a spherical seat 7 formed on the rear surface of the mirror holder 2. Also, codes 8 and 9
are operating rods that protrude from the front surface of the support body 4 and are used to adjust the vertical and horizontal angles of the mirror 1 about the pivot 6, and spherical pivots 10 and 11 are provided at the tips of each operating rod. . These pivots each fit into a spherical seat 12 provided on the rear surface of the mirror holder. Note that rotation stops 6a, 10a, and 11a are formed on the circumferential surface of each pivot, and these rotation stops engage with grooves 7b and 12b provided in each spherical seat.

Incidentally, in the above embodiment, in order to apply the required fitting torque between the pivot 6 and the spherical seat 7, a holder 14 is disposed on the outside of the seat 7 in a substantially ring shape. ing. That is, this ring-shaped holder 14 has a concave surface 15 that can come into close contact with a convex surface 7a forming the outer periphery of the spherical seat 7, as shown in FIG. Furthermore, in order to bring the holder 14 into pressure contact with the spherical seat 7, a circular pocket 17 for receiving a coil spring 16 is formed on one surface of the holder 14.
The coil spring 16 is contracted so as to engage with the support body 4 and the pocket 17 of the holder 14, and the elastic force of the spring causes the holder 1 to tighten.
The concave surface 15 of 4 is pressed against the outer peripheral surface of the spherical seat 7 to prevent the spherical seat 7 from expanding due to thermal deformation or the like. Further, reference numeral 18 denotes an engaging cylindrical portion formed on the support body 4, and the edge of the holder 14 is fitted into this cylindrical portion.

In the above embodiment, a back mirror with a built-in actuator unit for remotely controlling the angle of the mirror was shown, but the present invention is not limited to this type of back mirror; Instead of the actuator unit described above, a simple base plate or mirror body itself may be used as the support. In addition, the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the present invention.

[Effects of the invention] As is clear from the description of the above embodiments, the invention has the following advantages:
Attach a holder to the outside of the spherical catch that holds the pivot, which has a concave surface that touches the outer circumferential surface of the catch.
Since the structure is such that the holder is brought into pressure contact with the spherical seat by a spring installed between the holder and the support, the expansion of the spherical seat under high temperature can be suppressed by the holder. Moreover, even if there are dimensional variations during molding, resistance can be generated over a wide area in the pivot, thereby preventing a reduction in fitting torque. Also,
As mentioned above, the present invention has fewer parts than the conventional type, and has a simple structure that can omit complicated assembly steps, so it has excellent practical benefits such as improving production work efficiency. It has merits.

[Brief explanation of the drawing]

Figure 1 is a front view of an electric remote control mirror to which the present invention is applied, Figure 2 is a side view of the same mirror with a portion cut away, Figure 3 is an exploded view of Figure 2, and Figure 4A. and FIG. 4B are explanatory diagrams showing the assembled and disassembled states of the main parts of the conventional type. 1... Mirror, 2... Mirror holder, 3... Mirror body, 4... Support, 5... Support shaft, 6... Spherical pivot, 7... Spherical catch, 8, 9... Operating rod, 10, 11... Pivot, 12, 13... Spherical catch, 14... Holder, 15... Concave, 16
...Coil spring, 17...Pocket, 18
...Engagement cylinder part.

Claims (1)

[Claims for Utility Model Registration] 1. A spherical pivot is provided at the tip of a support shaft protruding from the front surface of the support, a spherical seat into which the pivot fits is provided on the rear surface of the mirror holder, and the pivot is mounted on the seat. In the rearview mirror configured to fit and hold, a holder is attached to the outside of the catch, and a holder is provided with a concave surface in contact with the outer peripheral surface of the catch, and a spring compressed between the holder and the support is used to hold the holder. A mounting structure for a back mirror, characterized in that the mirror is brought into pressure contact with a spherical catch. 2. The mounting structure for a rearview mirror according to claim 1, wherein the holder is formed into a substantially ring shape, and a portion of the holder is provided with a pocket for receiving a spring. 3. The back mirror mounting structure according to claim 1, wherein the support body has an engaging cylinder portion into which a holder is fitted.