JPH0253652A - Turn-over type door mirror - Google Patents

Abstract

PURPOSE:To decrease the holding force of the fulcrum globe of an operating lever so as to enable swift operation by providing a holding means for holding a mirror such as not to be displaced against a mirror visor except in the normal position of the mirror visor. CONSTITUTION:When an operating lever 12 is operated to the left, a vertical rod 20 is rotated around a fulcrum globe and the connecting part with a horizontal rod 29 protruding from the lower end of the vertical rod 20 is displaced to the right. A converter arm 28 connected through a shaft 25 and a clutch member 30 is also rotated to the left from this displacement so that a mirror 1 is turned to the left. In such a door mirror, a cam surface 46 is protrusively provided on a cam plate 8 integratedly provided on the upper surface of a shaft cylinder 9. The other end of a supporting rod 47 having a globe pivot at the tip vibrationally supported at the rear face of a mirror holder is fitted into a holding body 49, and an inhibiting member 50, for inhibiting the vibration of this supporting rod, disposed with its one end facing the cam surface 46 is oscillatingly supported so as to form a required holding means.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a tank over which is capable of manually adjusting the attitude of a mirror from inside a vehicle, and which is attached to a vehicle tank and is foldable in the longitudinal direction of the vehicle. This relates to type door mirrors.

(Prior Art) Conventionally, in door mirrors of this type, in which one end of the operating lever is protruded into the vehicle interior, a fulcrum ball is provided at the other end of the operating lever, and the mirror is tilted via a link mechanism. A clutch mechanism is provided to prevent the link mechanism from being damaged when it is folded down. However, since the link mechanism also moves when the mirror visor is folded down, the problem remains that when the mirror visor returns to its original position, the mirror does not return to its original position and the angle must be adjusted again. Currently, the only way to solve this problem is to set the fulcrum holding force of the operating lever to be greater than the clutch holding force, so that when the mirror visor is folded down, the clutch mechanism can be released while holding the operating lever. It is known what has been done.

(Problems to be Solved by the Invention) The clutch holding force needs to be set slightly large so that it does not easily come off due to external forces directly in front of the mirror or vibrations of the vehicle. However, if the fulcrum method holding force is set larger than the clutch holding force as described above, the fulcrum method holding force of the operating lever becomes considerably large, resulting in the problem that the operating lever becomes heavier and operability deteriorates. .

(Means for solving the problem) In order to solve the above-mentioned problem, the present invention aims to change the position of the mirror when the mirror visor is folded while the clutch holding force is set larger than the fulcrum method holding force of the operation lever. The purpose is to provide a mechanism that does not change the mirror visor, and as a means of achieving this, a shaft cylinder is set up on a base extending from the stay, and a mirror visor is attached so that it can be folded back and forth. A shaft that can move up and down and rotate is installed in the shaft cylinder, 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 upper end of the shaft is connected to the shaft that can move up and down and rotate. In a turnover type door mirror in which a conversion arm is attached via a clutch member to convert the tilt of the mirror to the front and back and to the left and right, the mirror is held so as not to be displaceable with respect to the mirror visor except at the normal position of the mirror visor. A holding means is interposed between the mirror holder and the bracket.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

Fig. 1 is a longitudinal 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 the mirror adjustment mechanism, and Fig. 4 is an exploded perspective view of the clutch section. 5 is an explanatory diagram of the operation of the blocking member, and FIG. 6 is a plan view showing the clutch member when the mirror visor is folded down.

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 spherical pivot 4 via a bracket 48, and the mirror 1 is held by a spherical pivot 4. It is maintained in a tiltable state around the horizontal axis X and the vertical axis 7 by a known rotation prevention means centered on the pivot 4.

The mirror visor 3 is attached to the side surface of the door of the vehicle and is supported on a shaft tube 9 erected on a base 5 projecting from a stay 6 so as to be freely foldable in the longitudinal direction of the vehicle. An outer cylinder 10 for housing the coil spring 7 is provided on the outer periphery of the cylinder 9. The coil spring 7 is held in a compressed state between a cam plate 8 provided integrally with the shaft cylinder 9 on the upper surface of the shaft cylinder 9 and a seat surface of the outer cylinder 10, and is held in a compressed state between the bottom surface of the outer cylinder 10 and the shaft cylinder 9. The mirror visor 3 is elastically supported on the base 5 via a plurality of ball clutches 44 arranged between the seat surfaces.

As shown in FIGS. 1, 2, and 3, the operating lever 12
One end provided with the knob 11 protrudes into the vehicle interior, and the other end is provided with a fulcrum 13, and is attached to the fulcrum holder 14 provided in the stay 6 and the upper end of the guide rod 26 erected on the base 5. It is rotatably supported in the left-right direction (directions A and B in FIG. 3) and in the left-right rotation direction (directions C and D in FIG. 3) using the fulcrum 13 held by the support member 13 as a fulcrum. An actuating piece 15 projects from the fulcrum 13, and the end of the actuating piece I5 is connected by a connecting pin 16 to the upper end of a swinging piece 18 formed in an oval shape. As a result, the swinging piece 18 can be moved in the left-right direction in response to a longitudinal operation of the operating lever 12 connected to the fulcrum 13, and in the up-down direction in response to a clockwise or counterclockwise operation. It is being done. A vertical rod 20 is connected to the lower part of the swing piece 18 on the spherical axis of the fulcrum 13, and the vertical rod 20 is vertically movable and rotatably inserted through the guide rod 26 erected on the base 5. has been done.

A protruding rod 20a extending in the horizontal direction is provided at the lower end of the vertical rod 20.
is provided. The other end of the protruding rod 20a is connected to a ball pivot 27 provided at the end of a horizontal rod 29 extending horizontally from the lower end of the shaft 25 inserted into the shaft tube 9. The movement of the vertical rod 20 is transmitted to the shaft 25.

A conversion arm 28 is attached to the upper end of the shaft 25 via a clutch member 30, which converts the vertical movement and rotation of the shaft 25 into tilting of the mirror I back and forth and left and right.

As shown in FIG. 4, the clutch member 30 is composed of a frame body 37 that houses a coiled spring 36 therein.

A square hole 35 through which the shaft 25 is inserted is formed at one end of the frame 37, and the semicircular notch groove 45 of the shaft 25 and the end face of the square hole 35 are always inseparable. The coiled spring 36 is engaged with the shaft 2.
5 and the inner end surface of the frame 37 with a sliding plate 46 interposed therebetween. This allows the vertical movement and rotational movement of the shaft 25 to be transmitted to the conversion arm 28. The connecting rod 39 swingably supported on the back side of the mirror l 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. A pivot 40a is connected to the conversion arm 28, and a spherical pivot 40b provided at the tips of two connecting rods 41 extending from both ends of the vertical rod 39a to opposite sides of the leg piece 39b is connected to the horizontal axis X of the mirror 1. It is supported symmetrically on the back side of mirror l. Therefore, when the shaft 25 moves upward, the conversion arm 28 also moves upward via the clutch member 30, so that the conversion arm 28
By pushing up 9b, the mirror l supported by the ball pivot 4 is tilted forward. The rearward tilting of the mirror l is performed by the above-mentioned reverse operation when the conversion arm 28 moves downward. Further, the mirror 1 is tilted in the left-right direction by the rotational movement of the shaft 25. That is, when the shaft 25 rotates counterclockwise, by rotating the conversion arm 28 counterclockwise, a force is exerted on the conversion arm 2 to pull the connecting rod 39, and the conversion arm 28 is supported by the ball pivot 4. The mirror 1 is tilted clockwise about the vertical axis 7. Further, when the shaft 25 rotates counterclockwise, the conversion arm 28 operates in the opposite direction as described above, thereby tilting the mirror l in the opposite direction.

The cam plate 8, which is integrally provided on the upper surface of the shaft cylinder 9, has a cam surface 46 projecting in the circumferential direction thereof.

The support rod 47 has a ball pivot 47a provided at one end thereof.
is swingably supported on the back surface of the mirror holder 2, and the other end of the support rod 47 is inserted through a holder 49 integrally formed with the bracket 48. A blocking member 50 for blocking the swinging of the support rod 47 is pivotally supported at its center on the bracket 4 so as to be able to swing freely;
The cam surface 4 is connected to the retainer @50a which is constantly biased in the engagement direction by the coil spring 51 to the free end of the support rod 47.
6 and an operating end 50b disposed opposite to each other. Here, in the normal position of the bracket 48, the blocking member 5
The engagement end 50a of the blocking member 50 is not engaged with the free end of the support rod 47 because the operating end 50b of the block member 50 is pushed up by the cam surface 46 against the biasing force of the coil spring 51; At this time, the mirror holder 2 is in a state where it can be freely displaced relative to the bracket 4. Further, when the bracket 48 is not in the normal position, the operating end 50b is disengaged from the cam surface 4G, so that the engaging end 50a engages with the free end of the support rod 47 in a state that presses it against the holder 49; At this time, the mirror holder 2 is in a state where it cannot be displaced with respect to the bracket 48 (see FIG. 5).

Next, the operation of this embodiment will be explained.

Turn the operating lever 12 to the left (direction of arrow A in Fig. 3)
When operated, the swing piece 18 and the vertical rod 20 rotate about the fulcrum method 13, and in conjunction with this, the protruding rod 20a that projects horizontally from the lower end of the vertical rod 20 and the shaft 25 project from the lower end. The connecting portion with the horizontal rod 29 is displaced to the right when viewed from the operating lever 12. This displacement of the connecting portion in the right direction is transmitted to the shaft 25 as a rotational motion, and the shaft 2
5 The conversion arm 28 connected to the upper end via the clutch member 30 rotates in the left direction (in the arrow AI force direction) when viewed from the operating lever 12, thereby causing the mirror 1 to rotate counterclockwise (in the arrow A ■ force direction). Similarly, when the operating lever 12 is operated to the right (direction of arrow B in FIG. 3), the conversion arm 28 rotates to the right (direction of arrow B1), and the mirror 1 is rotated to the right (direction of arrow BI). Next, when the operating lever 12 is rotated clockwise around the fulcrum 13 (in the direction of arrow C in FIG. 3), the operating piece 15 protruding from the fulcrum 13 rotates via the pin 16 The freely pivotable swinging piece 18 also rotates in the same direction about the fulcrum 13, but at this time, the vertical rod 20 connected to the swinging piece 18 is perpendicular to the guide rod 26 erected on the base 5. Since the vertical rod 20 is slidably inserted only in the direction shown in FIG.

Therefore, the connecting portion between the protruding rod 20a that protrudes horizontally from the lower end of the vertical rod 20 and the horizontal rod 29 that protrudes from the lower end of the shaft 25 moves upward, and this upward movement causes the shaft 25 to move upward as a sliding movement. The conversion arm 28 connected to the upper end of the shaft 25 via the clutch member 30 is moved upward (
movement in the direction of the arrow CI force, thereby tilting the mirror l forward about the horizontal axis X. Similarly, when the operating lever 12 is rotated to the left about the fulcrum 13 (in the direction of the arrow in FIG. 3), the movement of the mirror 1 is converted into a movement in the backward tilting direction.

In the turnover type door mirror according to the present invention equipped with such a mirror tilt adjustment 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 tube 10 is disengaged, and the mirror visor 3 begins to rotate around the shaft tube 9 erected on the base 5. . Simultaneously with this rotation of the mirror visor 3, the operating end 50b of the blocking member 50 separates from the cam surface 46, and the engaging end 50a of the blocking member 50 engages with the free end of the support rod 47 due to the biasing force of the coil spring 51. . 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 also rotates via the conversion arm 28, and the rotation of the shaft 25 is caused by the horizontal rod 29.
It is transmitted to the operating lever 12 by a link mechanism such as the vertical rod 20. When the operating lever 12 rotates to the maximum rotation position, the inner end surface of the frame 37 constituting the clutch member 30 separates from the notched groove 45 of the shaft 25 and rides on the arcuate surface of the shaft 25, causing the frame 37 The inner coiled spring 36 is compressed. As a result, the mirror visor 3 is folded toward the rear of the vehicle. Frame 3 riding on the surface
The inner end surface of 7 is irremovably engaged with the notched groove 45 of the shaft 25. When the mirror visor 3 is further rotated in this state, the operating lever 12 begins to rotate, and at the same time the operating lever 12 returns to the position before folding the mirror visor 3, the mirror visor 3 returns to its normal position. . When the mirror visor 3 returns to its normal position, the actuating end 5 of the blocking member 50
0b is pushed up again by the cam surface 46, so that the engagement end 50a of the blocking member 50 is released from the free end of the support rod 47. At this time, the mirror holder 2, which has been 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 was folded down.

(Effect of the invention) Since the present invention is configured as described above,
Set the clutch holding force to be thicker than the fulcrum method holding force of the operating lever (
Even if this setting is made, the position of the mirror will not change when the mirror visor is folded down. Therefore, there is no need to increase the fulcrum method holding force of the operating lever, and as a result, the operating lever becomes heavier and becomes less operable. It has the excellent effect of not causing any deterioration. In addition, the mirror can be held more reliably than the conventional mechanism that returns the mirror by balancing the fulcrum holding force of the operating lever and the clutch holding force, so there is no need to adjust the mirror tilt after the mirror visor returns. It has the excellent effect of not having any

[Brief explanation of the drawing]

Fig. 1 is a longitudinal 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 the mirror adjustment mechanism, and Fig. 4 is an exploded perspective view of the clutch member. 5 is an explanatory view of the operation of the blocking member, and FIG. 6 is a plan view showing the clutch portion when the mirror visor is folded down. 1...Mirror 2...Mirror holder 3
000. Mirror visor 8...Cam plate 9...
Shaft tube 46...Cam surface 47...Support rod 48...Bracket 50...Blocking member 50b...Operating end 50a...Engaging end coil spring

Claims (2)

[Claims] (1) A shaft tube is erected on the base extending from the stay, the mirror visor is attached so that it can be folded back and forth, and a shaft that can move up and down and rotate is inserted into the shaft tube, and the operating lever is The final end of a link mechanism that transmits movement is connected to the lower end of the shaft, and a conversion arm that converts the vertical movement and rotation of the shaft into tilting of the mirror back and forth and left and right is attached to the upper end of the shaft via a clutch member. A turnover type door mirror comprising: a holding means interposed between a mirror holder and a bracket for holding the mirror so as not to be displaceable with respect to the mirror visor except at the normal position of the mirror visor; door mirror. (2) The holding means is constituted by a support rod protruding from the rear surface of the mirror holder and a blocking member pivotally supported by the bracket, and the blocking member is interlocked with rotation of the mirror visor. 2. The turnover type door mirror according to claim 1, wherein the mirror holder is held untiltable via the support rod by swinging and engaging with the support rod.