JPH0732268Y2 - Turnover door mirror - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is a turnover type in which the attitude of the mirror can be manually adjusted from the passenger compartment and is mounted on the side of the vehicle and can be laid down in the front-rear direction of the vehicle. It is about door mirrors.

(Prior Art) Conventionally, in this type of door mirror, a mirror visor is used in a door mirror in which a fulcrum ball is provided at the other end of an operation lever having one end protruding in the vehicle interior and the mirror is tilted via a link mechanism. A clutch mechanism is provided in order to prevent the link mechanism from being damaged when the robot falls. However, since the link mechanism also moves when the mirror visor falls, the problem remains that the mirror does not return to the original position and the angle must be adjusted again when the mirror visor returns to the original position. Become. Currently, as a means to solve this problem, the fulcrum ball holding force of the operating lever is set to be larger than the clutch holding force so that the clutch mechanism can be disengaged while holding the operating lever when the mirror visor falls. Are known.

(Problems to be solved by the invention) It is necessary to set the clutch holding force to a slightly large value so that the clutch holding force does not easily come off due to external force directly applied to the mirror or vibration of the vehicle. However, when the fulcrum ball holding force is set to be larger than the clutch holding force as described above, the fulcrum ball holding force of the operating lever becomes considerably large, and as a result, the operating lever becomes heavy and the operability deteriorates. .

(Means for Solving Problems) In order to solve the above problems, the present invention sets the position of the mirror when the mirror visor falls down while keeping the clutch holding force larger than the fulcrum ball holding force of the operating lever. It is an object of the present invention to provide a mechanism that does not change, and as a means therefor, a shaft cylinder is erected on a base extended from a stay and a mirror visor is attached so as to be able to fall forward and backward. A shaft that is vertically movable and rotatable is inserted therein, and the final end of a link mechanism that transmits the movement of the operating lever is connected to the lower end of the shaft, and the vertical movement and rotation of the shaft is connected to the upper end of the shaft of the mirror. In a turnover type door mirror in which a conversion arm for converting the inclination to the front and rear and to the left and right is mounted via a clutch member, the projection is extended to the outside of the axis of the barrel and fixed to the barrel. While a cam surface is projected on the outer flange-shaped cam plate, a free end of a support rod whose one end is swingably supported on the rear surface of the mirror is inserted into a bracket for supporting the mirror, and one end of the bracket is supported. The bracket has a blocking member having an engaging end that engages with a free end of the support rod, an operating end that is arranged opposite to the cam surface at the other end, and a coil spring is provided on the engaging end side. Pivotally supported on the bracket, and at the regular position of the bracket, the operating end of the blocking member is pushed up by the cam surface against the spring bias of the coil spring, so that the engaging end of the blocking member is It is not engaged with the free end of the supporting rod, and the engaging end is engaged with the free end of the supporting rod by the spring biasing force of the coil spring when the operating end is disengaged from the cam surface except at the normal position. The mirror and the bracket It is obtained by the non-displaced with respect to the door.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical sectional front view of a turnover type door mirror according to the present invention, FIG. 2 is a cross sectional plan view of FIG. 1, FIG. 3 is a perspective view showing a mirror adjusting mechanism, and FIG. 4 is an exploded perspective view of a clutch portion. FIGS. 5 and 5 are explanatory views of the operation of the blocking member, and FIG. 6 is a plan view showing the clutch member when the mirror visor falls.

As shown in FIGS. 1 and 2, the mirror 1 is held by a mirror holder 2, and the mirror holder 2 and the mirror visor 3 are connected by a ball pivot 4 via a bracket 48, and the mirror 1 is connected to the ball pivot 4. A well-known detent means centering on is used to keep the tiltable state around the horizontal axis X and the vertical axis Y.

The mirror visor 3 is supported so as to be tiltable in the front-rear direction of the vehicle with respect to a shaft cylinder 9 standing on a base 5 protruding from a mounting stay 6 mounted on the side surface of the vehicle door. An outer cylinder 10 for housing the coil spring 7 is provided on the outer circumference of the. The coil spring 7 is a barrel 9
The cam plate 8 and the outer cylinder 10 which are integrally provided on the upper surface of the shaft cylinder 9
Are held in a compressed state between the seat surfaces of the mirror visor 3 via the plurality of ball clutches 44 arranged between the lower surface of the outer cylinder 10 and the seat surface of the shaft cylinder 9 and elastically move the mirror visor 3 onto the base 5. I support you.

As shown in FIG. 1, FIG. 2, and FIG. 3, the operating lever 12 is provided in the mounting stay 6 so that one end provided with the knob 11 is projected into the vehicle interior and the other end is provided with a fulcrum ball 13. With the fulcrum sphere 13 held by the fulcrum sphere holder 14 and the upper end of the guide rod 26 erected on the base 5 as a fulcrum, the left-right direction (A and B directions in FIG. 3) and the left-right rotation direction (the third direction). It is supported rotatably in the C and D directions in the figure).
An operating piece 15 projects from the fulcrum sphere 13, and an end portion of the operating piece 15 is a swinging piece 18 formed by a connecting pin 16 into a substantially L shape.
Is connected to the upper end of. As a result, the rocking piece 18 can be interlocked in the left-right direction when operating the operating lever 12 connected to the fulcrum sphere 13 in the front-back direction, and in the vertical direction when operating clockwise or counterclockwise. Has been A vertical rod 20 is connected to the lower part of the swinging piece 18 on the axis of the fulcrum sphere 13, and the vertical rod 20 is the guide rod erected on the base 5.
It is pierced by 26 so that it can move up and down and rotate freely. The vertical rod 20
A projecting rod 20a extending in the horizontal direction is provided at the lower end of the. The other end of the projecting rod 20a is connected to a ball pivot 27 provided at the end of a horizontal rod 29 that extends horizontally from the lower end of a shaft 25 that is inserted into the barrel 9 and is accompanied by operation of the operating lever 12. The movement of the vertical rod 20 is transmitted to the shaft 25. A conversion arm 28 for converting vertical movement and rotation of the shaft 25 into front and rear and left and right inclinations of the mirror 1 is attached to the upper end of the shaft 25 via a clutch member 30.

As shown in FIG. 4, the clutch member 30 is composed of a frame body 37 in which a coil spring 36 is housed. The frame
A square hole 35 that penetrates the shaft 25 is formed at one end of 37, and the semicircular notch groove 45 of the shaft 25 and the end surface of the square hole 35 always engage in a non-separable manner. As described above, the coil spring 36 is contracted between the shaft 25 and the inner end surface of the frame body 37 with the sliding plate 43 interposed therebetween. As a result, the vertical movement and rotational movement of the shaft 25 are transmitted to the conversion arm 28. The connecting rod 39 swingably supported on the back side of the mirror 1 is composed of a vertical rod 39a and a leg piece 39b extending horizontally from the center of the vertical rod 39a, and a ball provided at the tip of the leg piece 39b. The pivot 40a is connected to the conversion arm 28, and the spherical pivot 40b provided at the ends of two connecting rods 41 extending from both ends of the vertical rod 39a to the side opposite to the leg pieces 39b is the horizontal axis X of the mirror 1. Symmetrically, it is supported on the rear side of the mirror 1. Therefore, when the shaft 25 moves up, the conversion arm 28 also moves up via the clutch member 30, so that the conversion arm 28 pushes up the leg piece 39b of the connecting rod 39 to support the mirror supported by the ball pivot 4. 1 leans forward. The rearward tilt of the mirror 1 is a conversion arm
When 28 moves down, the reverse operation described above is performed. The tilting of the mirror 1 in the left-right direction is performed by the rotational movement of the shaft 25. That is, when the shaft 25 rotates counterclockwise, the conversion arm 28 is rotated counterclockwise to exert a force for drawing the connecting rod 39 to the conversion arm 28, and the mirror pivotally supported by the ball pivot 4. 1 is the vertical axis Y
Tilt clockwise around. Further, when the shaft 25 rotates counterclockwise, the conversion arm 28 operates in the opposite direction to tilt the mirror 1 in the opposite direction.

A cam surface 46 is projectingly provided on an outer brim-shaped cam plate 8 which is fixed to the upper surface of the shaft cylinder 9 so as to project outward from the axis thereof.
The support rod 47 has a spherical pivot 47a provided at one end thereof swingably supported on the back surface of the mirror holder 2, and the other end of the support rod 47 is a holder integrally formed with the bracket 48. It is installed in 49. A blocking member 50 for blocking the swinging of the support rod 47 is pivotally supported by the bracket 48 in the center portion thereof, and a coil spring is always provided at the free end of the support rod 47 in the engaging direction. It has an engaging end 50a biased by 51 and an operating end 50b arranged to face the cam surface 46. Here, in the regular position of the bracket 48, the operating end 50b of the blocking member 50 is pushed up by the cam surface 46 against the bias of the coil spring 51, so that the engaging end 50a of the blocking member 50 is supported by the support. The free end of the rod 47 is not engaged, and at this time, the mirror holder 2 is in a state of being freely displaceable with respect to the bracket 48. Further, at a position other than the normal position of the bracket 48, the engaging end 50a is engaged with the free end of the support rod 47 pressing against the holding body 49 by separating the operating end 50b from the cam surface 46, At this time, the mirror holder 2 is not displaceable with respect to the bracket 48 (see FIG. 5).

Next, the operation of this embodiment will be described.

When the operating lever 12 is operated to the left (in the direction of arrow A in FIG. 3), the swing piece 18 and the vertical rod 20 rotate about the fulcrum sphere 13, and in conjunction with this, the swing lever 18 and the vertical rod 20 move horizontally from the lower end of the vertical rod 20. The connecting portion between the projecting rod 20a projecting in the direction and the horizontal rod 29 projecting from the lower end of the shaft 25 is displaced rightward when viewed from the operating lever 12. The displacement of the connecting portion to the right is transmitted to the shaft 25 as a rotational movement, and the clutch member 30 is attached to the upper end of the shaft 25.
The conversion arm 28, which is connected via the rotary arm 28, rotates in the left direction (the direction of the arrow AI) when viewed from the operating lever 12, whereby the mirror 1
Move counterclockwise (arrow AII direction). Similarly, when the operation lever 12 is operated rightward (direction of arrow B in FIG. 3), the conversion arm 28 is rotated rightward (direction of arrow BI) to move the mirror 1 rightward (direction of arrow BII). Let
Next, when the operation lever 12 is rotated to the right around the fulcrum sphere 13 (in the direction of arrow C in FIG. 3), the operating piece 15 protruding from the fulcrum sphere 13 is rotatably pivoted via a pin 16. The oscillating piece 18 also rotates in the same direction about the fulcrum sphere 13, but at this time, the vertical rod 20 connected to the oscillating piece 18 oscillates only vertically to the guide rod 26 erected on the base 5. Since it is movably pierced, the vertical rod 20 is pulled up vertically. Therefore, the protruding rod 20a protruding horizontally from the lower end of the vertical rod 20 and the horizontal rod 29 protruding from the lower end of the shaft 25.
The connecting portion with and moves upward, and this upward movement is transmitted to the shaft 25 as an upward sliding motion, and the conversion arm 28 connected to the upper end of the shaft 25 via the clutch member 30 is moved upward (arrow CI.
Direction), thereby tilting the mirror 1 forward about the horizontal axis X. Similarly, when the operation lever 12 is rotated leftward about the fulcrum sphere 13 (in the direction of arrow D in FIG. 3), the movement of the mirror 1 is converted into the movement in the backward tilt direction.

In the turnover type door mirror according to the present invention having such a mirror tilt adjusting mechanism, the mirror visor 3
When a force is applied to the rear of the vehicle, the ball clutch 44 between the upper surface of the base 5 and the lower surface of the outer cylinder 10 is disengaged, and the mirror visor 3 starts to rotate around the shaft cylinder 9 erected on the base 5. . At the same time when the mirror visor 3 rotates, the blocking member 50
The operating end 50b of the blocking member 50 is separated from the cam surface 46, and the engaging end 50a of the blocking member 50 is supported by the biasing force of the coil spring 51.
Engage with the free end of 7. As a result, the support rod 47 cannot be displaced with respect to the bracket 48, so that the bracket 48 and the mirror holder 2 are integrated via the support rod 47.
When the mirror visor 3 is further rotated in this state, the shaft 25 is also rotated via the conversion arm 28.
The rotation of is transmitted to the operation lever 12 by a link mechanism such as a horizontal rod 29 and a vertical rod 20. When the operation lever 12 is rotated to the maximum rotation position, the inner end surface of the frame body 37 constituting the clutch member 30 is disengaged from the notch groove 45 of the shaft 25 and rides on the arc surface of the shaft 25, and the frame body 37 is formed. The inner winding spring 36 is compressed. As a result, the mirror visor 3 falls to the rear of the vehicle (see FIG. 6). Next, when a force is applied to the mirror visor 3 which is laid down on the rear side of the vehicle in the direction of returning to the normal position, the inner end surface of the frame body 37 riding on the arc surface of the shaft 25 is separated into the notch groove 45 of the shaft 25. Engage impossible. When the mirror visor 3 is further rotated in this state, the operation lever 12 starts to rotate, and the operation lever 12 returns to the position before the mirror visor 3 is laid down, and at the same time, the mirror visor 3 returns to the normal position. When the mirror visor 3 is returned to the normal position, the operating end 50b of the blocking member 50 is returned to the cam surface 46 again.
Is pushed up to the engaging end 50 of the blocking member 50.
The a is disengaged from the free end of the support rod 47. At this time, the mirror holder 2 integrated with the bracket 48 via the support rod 47 becomes freely displaceable, and the mirror holder 2 returns to the state before the mirror visor 3 is laid down.

(Effect of the Invention) Since the present invention is configured as described above,
Even if the clutch holding force is set to be larger than the fulcrum ball holding force of the operation lever, the position of the mirror does not change when the mirror visor falls. Therefore, it is not necessary to increase the fulcrum ball holding force of the operation lever so much, and as a result, there is an excellent effect that the operation lever does not become heavy and the operability is deteriorated. In addition, the mirror can be held more reliably than the conventional mechanism that returns the mirror by the balance between the fulcrum ball holding force of the operation lever and the clutch holding force, so it is necessary to adjust the tilt of the mirror after returning to the mirror visor. There is an excellent effect that there is no.

[Brief description of drawings]

1 is a vertical sectional front view of a turnover type door mirror according to the present invention, FIG. 2 is a cross sectional plan view of FIG. 1, FIG. 3 is a perspective view showing a mirror adjusting mechanism, and FIG. 4 is an exploded perspective view of a clutch member. FIGS. 5 and 5 are explanatory views of the operation of the blocking member, and FIG. 6 is a plan view showing the clutch portion when the mirror visor falls. 1 ... Mirror, 2 ... Mirror holder 3 ... Mirror visor, 8 ... Cam plate 9 ... Shaft cylinder, 46 ... Cam surface 47 ... Support rod, 48 ... Bracket 50 ... Blocking member, 50a ... … Engaging end 50b …… Working end 51 …… Coil spring

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsura Shirakura 3700 Wadayama, Shimonaka, Sadowara-cho, Miyazaki-gun, Miyazaki Prefecture Honda Locks Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. An operating lever, in which a shaft cylinder is erected on a base extending from a stay and a mirror visor is mounted so as to be able to fall in the front-rear direction, and a shaft which can be moved up and down and rotated is penetrated in the shaft cylinder. The end of a link mechanism for transmitting the movement of the shaft is connected to the lower end of the shaft, and a conversion arm for converting the vertical movement and rotation of the shaft into the forward and backward and left and right inclinations of the mirror is provided at the upper end of the shaft via a clutch member. In a turnover type door mirror that is mounted, a cam surface is projected on an outer brim-shaped cam plate fixed to the shaft cylinder by protruding outward from the axis line of the shaft cylinder, while one end is rocked on the rear surface of the mirror. The free end of a freely supported support rod is inserted into a bracket that supports the mirror, and has an engaging end that engages with the free end of the support rod at one end, and is arranged opposite to the cam surface at the other end. Has a working end A blocking member provided with a coil spring on the engaging end side thereof is pivotally supported on the bracket so that the working end of the blocking member resists the spring bias of the coil spring at the regular position of the bracket. The engaging end of the blocking member is disengaged from the free end of the support rod by being pushed up by the cam surface, and the engaging end is disengaged from the operating surface at a position other than the normal position. The turnover door mirror according to claim 1, wherein the coil spring engages the free end of the support rod by the spring biasing force of the coil spring, thereby disabling the mirror with respect to the bracket when the mirror visor falls.