JPH0449004Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mounting mechanism for a removable rearview mirror for a vehicle that can be detached when subjected to an external force exceeding a predetermined value.

[Prior Art] A conventional removable rearview mirror for a vehicle has a stay attached to a base fixed to an attached part near the top of the windshield or the front edge of the ceiling of the vehicle interior, with a base stay interposed therebetween. A falling mechanism using a disc spring and a set screw is built in between the base stay and the stay. That is, as shown in FIG.
The positioning protrusion 4a of the base stay 3 is inserted into the recess 3 of the base stay 3.
a, screw the set screw 6 with the disc spring 5 interposed into the screw hole 4b of the stay 4 from above the base stay 3, and then insert the locking claw 7 at the rear end of the base stay into the base 1. Insert and engage the locking taper groove 2 of the ninth
The base stay 3 is attached to the base 2 as shown in the figure.

[Problem to be solved by the invention] As shown in Fig. 9, the rearview mirror with the above-mentioned falling mechanism is subjected to an external force in a range of 45 degrees downward from the horizontal plane with respect to the pivot P at the tip of the stay. There is a restriction regarding the setting position that a dropout torque must be generated in the direction of arrow A with pivot P as the center. If set in this way, it may directly block the driver's field of view, which may impede the driver's safe driving.

The purpose of this invention is to avoid the above-mentioned restrictions regarding the mounting position, to be able to install it at an appropriate location that does not directly affect the driver's field of vision, and to be able to easily fall off even when subjected to impact loads from any direction. The purpose of this invention is to provide a mounting mechanism.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a rearview mirror installation in which a stay is removably attached to a base fixed to an attached part near the front edge of the upper part of a vehicle windshield or the ceiling of a passenger compartment. The mechanism has a recess formed in the lower surface of the base, and a C-shape in the inclined upper half of the upper surface of the stay when viewed from above.
In addition, a frame having a height that can be accommodated in the recess is provided protrudingly, an arcuate leaf spring is arranged inside the frame, a hemispherical projection is provided at the center of the front end of the frame, and a hemispherical projection is provided at the center of the side wall surface on the sloped upper side of the recess. Stoppers with hemispheres are engaged with the formed hemispherical recesses, and at both ends of the arcuate leaf spring are hemispherical stoppers that penetrate near both ends of the frame and can be elastically fitted into recesses formed on the inner surfaces of opposing side walls of the recess. The present invention is further characterized in that a locking member for adjusting the elasticity of the leaf spring is inserted from diagonally below the stay toward the center of the curved portion of the leaf spring on the upper surface of the stay.

[Operation] The present invention is designed to insert the frame on the upper surface of the stay into the recess on the lower surface of the base while engaging the hemispherical protrusion at the tip of the frame on the stay side with the hemispherical recess provided on the inner wall surface of the recess on the base side. By pushing the center of an arcuate leaf spring arranged inside the frame with the tip of a locking member inserted from diagonally below the stay, a stopper with a hemisphere is inserted into a recess on the inner wall surface of the recess in a direction perpendicular to the hemispherical protrusion. Attach the stay to the base by elastically fitting it. To attach the stay to the base, without using any special jigs or tools, fit the frame on the top of the stay into the recess in the base, and then insert it from the diagonally downward direction of the stay toward the center of the curved part of the leaf spring on the top of the stay. The process is completed by adjusting the leaf spring elasticity using the locking member.

Further, when an impact load of a predetermined value or higher is applied after installation, the hemispherical stopper is unfitted and the stay easily falls off from the base, regardless of the direction in which the external force is applied.

[Example] Hereinafter, an example will be described with reference to the drawings. Fig. 1 is a longitudinal sectional side view of the mounting mechanism of the rearview mirror of the present invention, Fig. 2 is a bottom front view seen diagonally from below, Fig. 3 is a longitudinal sectional view taken along the - line in Fig. 1, and Fig. 4
The figure is a cross-sectional plan view taken along the - line in FIG. 1.

In the figure, 10 is the base, 11 is the base 10
12 is a hemispherical recess formed on the rear inner wall of the recess 11; 13 is a hemispherical recess formed on both side walls of the recess 11; 15 is a stay of the rearview mirror; 17 is a projection on the top surface 16 of the stay. It is a U-shaped frame.

The upper surface of the base 10 is finished to be a smooth surface that is easy to adhere to an attachment part 40 such as a vehicle windshield, and the lower surface 11 is finished as a stay upper surface 1 as shown in FIG.
A recess 11 is formed in which a U-shaped frame 17 of 6 is housed.

Positioning dowels 23 are provided at three locations on the upper end of the frame 17, and correspondingly there are provided recesses 14 for engaging the dowels 23 in the recesses 11.

C in the inclined upper half of the stay top surface 16 when viewed from the plane.
A frame 17 which is shaped like a letter and has a height that can be accommodated in the recess 11 is provided protrudingly, and an arcuate leaf spring 27 is arranged inside the frame. A hemispherical projection 18 is provided at the center of the front end of the frame 17 and is engaged with a hemispherical recess 12 formed at the center of the side wall surface on the inclined upper side of the recess 11.

The frame 1 is attached to both ends of the arcuate leaf spring 27.
The elastic engagement means 20 is provided with stoppers 24, 24 having hemispherical protrusions 26 that penetrate near both ends of the recess 7 and can be elastically fitted into the recesses 13, 13 formed on the inner surfaces of opposing side walls of the recess 11. Make it compose. Further, a locking member 30 such as a screw for adjusting the elasticity of the leaf spring is inserted from the obliquely lower side of the stay 15 toward the center of the curved portion of the leaf spring on the top surface 16 of the stay. In FIG. 1, reference numeral 31 is a hole through which the locking member 30 is inserted.

A protruding piece 29 is formed in the center of the leaf spring 27, which comes into contact with the flat surface of the recess 11 when set, in order to prevent the leaf spring from rattling in the vertical direction. The hemispherical stopper 24 is composed of a U-shaped base portion 25 and a hemispherical protrusion 26, and the U-shaped base portion 25 is slidably inserted into a guide groove 21 cut into the top surface 16 of the stay. Furthermore, ribs 1 are provided at both ends of the frame 17 for temporarily fixing the leaf spring 27 in the frame before the stay 15 is set on the base 10.
9 is formed.

To assemble the above-mentioned attachment mechanism, the base 10 is bonded in advance to the attachment part 40 such as the upper part of the vehicle windshield or the front edge of the ceiling. On the other hand, a subassembly is prepared in which a leaf spring 27 is temporarily fixed within the frame 17 of the stay top surface 16. When the sub-assembly stay is temporarily fixed, as shown in FIG.
7, and both legs 28, 28 of the leaf spring 27 are locked to the temporary fixing rib 19.

After temporarily fixing the leaf spring 27 in this way, the protrusion 18 on the frame side is engaged with the recess 12 in the stay recess, and at the same time, the dowel 23 on the top surface of the frame is engaged with the recess 14 in the recess surface for positioning. While doing so, fit the frame 17 into the recess 11 on the stay side. Next, when the locking member 30 is screwed in or pushed in and its tip is advanced obliquely upward, the curved portion of the leaf spring 27 approaches the inner wall of the frame, and as a result, both legs 28, 28 move toward the temporary fixing rib 19, 1
It's out of 9. When the temporary fixing is released, the legs 28, 28 spread outward due to the elasticity of the leaf spring, so the hemispherical stoppers 24, 24 guided by the grooves 21 move, and the hemispherical protrusions 26, 26 at the tips move.
are engaged with the recesses 13, 13 and set as shown in FIGS. 1, 3, and 4.

When set as described above, the hemispherical recess 12 in the recess 11 and the hemispherical protrusion 18 of the frame 17 engage, and the hemispherical recesses 13, 13 on the inner wall of the recess and the hemispherical protrusion of the elastic engagement means 20 engage. The stay is supported by engagement with the stays 26 and 26, and when an impact load is applied to the pivot P at the tip of the stay that holds the rearview mirror, at least one hemispherical protrusion 26 of the elastic engagement means comes off and falls off. be.

In the illustrated example, a screw is used as the locking member 30, but a resin pin may be used instead. In the case of a resin pin, it can be attached with a single push, and the insertion hole diagonally below the stay can also be closed without being exposed.

[Effect of the invention] As described above, the protruding mechanism of the room mirror of the present invention includes a recess formed on the lower surface of the base, a frame protruding from the upper surface of the stay to be accommodated in the recess, and the recess. a hemispherical recess provided on the inner wall surface of the hemispherical recess, a hemispherical protrusion formed at the front end of the frame to engage with the hemispherical recess, and a recess disposed within the frame and whose tip portion is perpendicular to the hemispherical protrusion. Since it has elastic engagement means that can elastically come into contact with the internal wall surface, the stay can be easily attached to the base without the use of special jigs and tools, and the stay can be easily attached to the base without any external force acting on it. It will easily fall off in any direction. Therefore, there are no constraints on the mounting position that are found in the conventional type, and the mounting position can be set as appropriate without directly affecting the driver's visibility.

In addition, by pushing the curved center part of the bow-shaped leaf spring with the locking member, the hemispherical protrusion of the stopper is elastically engaged with the concave part of the side wall of the base recess, so that there is no need to force the installation. No external force or special insertion direction is required, and the stay as a subassembly can be inserted from directly below the base, making the device extremely simple and reliable.

When the hemispherical stopper and guide groove of claim 2 are used, the stay can be attached very easily by correctly sliding the hemispherical stopper.

[Brief explanation of the drawing]

Fig. 1 is a vertical side view of the attachment mechanism of the rearview mirror of the present invention, Fig. 2 is a bottom view seen diagonally from below in Fig. 1, Fig. 3 is a longitudinal front view taken along the - line in Fig. 1, and Fig. 4 is 1, FIG. 5 is a cross-sectional plan view showing the state of the elastic engagement means immediately after the stay is fitted into the base, FIG. FIG. 7 is an exploded perspective view of the entire mounting mechanism, FIG. 8 is an exploded perspective view of a conventional mirror mounting mechanism, and FIG. 9 is a diagram showing the limit of action of external force in the conventional mirror mounting mechanism. 10... Base, 11... Recess, 12, 13...
... Hemisphere recess, 15 ... Stay, 16 ... Stay top surface, 17 ... Frame, 18 ... Hemispherical projection, 1
9... Temporary fixing rib, 20... Elastic engagement means, 2
DESCRIPTION OF SYMBOLS 1... Guide groove, 22... Through hole, 23... Dowel, 24... Stopper with hemisphere, 25... U-shaped base, 26... Hemisphere protrusion, 27... Leaf spring, 28
... Leg portion, 29 ... Projection piece, 30 ... Locking member,
40...Adhesive part.

Claims (1)

[Claims for Utility Model Registration] 1. A stay 1 is attached to a base 10 fixed to an attached part near the top of a vehicle windshield or the front edge of a passenger compartment ceiling.
5 is removably attached, a recess 11 is formed on the lower surface of the base 10, and the recess 11 is formed in the inclined upper half of the stay upper surface 16 to form a C-shape when viewed from a plane.
A frame 17 with a height that can be accommodated in the frame is protruded, an arcuate leaf spring 27 is arranged inside the frame, and a hemispherical protrusion 1 is provided at the center of the front end of the frame 17.
8 is provided to engage with the hemispherical recess 12 formed at the center of the side wall surface on the upper side of the slope of the recess 11, and at both ends of the arcuate leaf spring 27, a recess is provided that penetrates near both ends of the frame 17 and Stoppers 24, 24 with hemispheres that can be elastically fitted into the recesses 13, 13 formed on the inner surfaces of the opposing side walls are provided, and further, the plate spring elasticity is directed from diagonally below the stay 15 toward the center of the plate spring curved part of the top surface 16 of the stay. A mounting mechanism for a room mirror, characterized in that a locking member 30 for adjustment is inserted. 2 The hemispherical stopper 24 has a U-shaped base 25
and a hemispherical protrusion 26, and a U-shaped base 25.
2. The rear-view mirror mounting mechanism according to claim 1, wherein the bracket is slidably inserted into a guide groove cut into the upper surface of the stay.