JP3358779B2 - Waterproof structure of automotive door handle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof structure for a door handle of an automobile, and more particularly, to a waterproof mounting structure of a door lock lever provided through an outer plate of an automobile.

[0002]

2. Description of the Related Art As shown in FIG. 6 and Japanese Utility Model Publication No. 2-48595, a door handle for a motor vehicle is provided with a door handle 2 rotatably supported by a door 1 provided outside the door 1, and the door handle. A lever 3 that rotates integrally with the extension 2 extends into the door 1 and is connected to a lock device. In FIG. 6, the driving plate 4 is connected to a lock device (not shown). When the door handle 2 is pulled, the lever 3 pushes the drive plate 4 to unlock the connected lock device.

[0003] A boot 5 is provided between the lever 3 and the door 1 to prevent rainwater or the like from entering the door, and the tip of the boot 5 is attached to the lever 3. Further, the vicinity of the base of the boot 5 is largely flattened and is sandwiched between the door 6 and the bracket 6 that supports the door handle, and is used as a waterproof seal. However,
In the conventional door handle waterproofing device, the bracket 6 and the waterproof seal portion of the door 1 are flat and large, even though the boot 5 has a three-dimensional shape. Boots must be molded. Therefore, the conventional boot 5 has disadvantages that it is difficult to form the boot 5 and the manufacturing cost is increased.

[0004]

SUMMARY OF THE INVENTION In the present invention, a boot that can be easily formed and is inexpensive can be used by reducing the size of a boot that prevents infiltration of rainwater or the like from a door handle portion. Further, the present invention provides a waterproof structure for a door handle having an attachment structure that does not come off when the door handle is operated even when the boots are downsized.

[0005]

In order to achieve the above object, according to the present invention, in a waterproof structure of an automobile door handle, a door handle rotatably mounted on a vehicle body and an integral door handle. a lever for opening and closing a door lock device by rotating the handle case having an opening peripheral edge lever with attached to the vehicle body through attaching a tip to the lever, deformation in the center covered with a terminal on the opening edge And a boot having a portion, and an outer periphery of an opening peripheral portion.
Is the rear wall in the same direction as the wall along the lever rotation direction.
And formed by the wall face in the same direction the front side, the wall surfaces of the least well <br/> rear side, in its side view, countercurrent Cow first end
Structure and sloping diverging in a direction away from the lever follow
did. At least on the wall surface along the lever rotation direction of the outer periphery of the opening peripheral portion, the latter half of the lever rotation direction, that is,
The structure is such that it has a surface that expands from the center to the wall surface on the back side as it advances in the lever rotation direction. Restore lever
Return one end of the spring to the home position with the boot end of the lever.
And the other end of the spring
Hooked to the ground. Provide multiple arms on the door handle
At the same time, the arm is pivotally supported on the handle case, and
Only one of the arms has an opening in the handle case
A lever that penetrates the peripheral edge is provided integrally and has a lever.
Not the tip side of the arm is covered by the handle case
I have.

[0006]

FIG. 5 is a rear perspective view of a motor vehicle, showing a state in which a back door 7 is opened. The back door 7 constituting a part of the vehicle body is rotatably attached to the vehicle body 8 at the upper end by a hinge (not shown). In the vicinity of the center lower end of the back door 7, a door lock 9 is provided.
A door handle 10 is arranged above the door lock 9. In addition, an inverted U-shaped striker 11 is attached near the center rear end of the vehicle body 8 and engages with the door lock 9 to hold the back door 7 when the back door 7 is closed.

FIG. 1 is a partial sectional view of the vicinity of a door handle 10 attached to a back door 7. Back door 7
Is formed by an outer panel 12 outside the vehicle body and an inner panel 13 inside the vehicle body, and has a space inside. The outer panel 12 has a central portion bent forward to form a concave portion 14, and a license plate (not shown) is attached to the concave portion 14. A substantially rectangular mounting hole 15 is provided in the upper surface wall of the concave portion 14, and a resin handle case 16 is fixed by a bolt (not shown). The pad 17 is a seal member sandwiched between the outer panel 12 and the handle case 16,
The mounting surface of the handle case 16 is kept watertight.

FIG. 2 is a perspective view of the handle case 16 and peripheral devices, and FIG. 3 is a cross-sectional view taken along the line III-III of FIG. The door handle 10 is integrally provided with two arms 18, 18 which are separated to the left and right, and the arms 18, 18 are rotatably supported on the handle case 16 by shafts 19, 19, respectively. The through holes 18a, 18a provided in the respective arms 18, 18 and through which the shafts 19, 19 pass are slightly larger in diameter than the shaft 19, and the support holes 16a, 16a provided in the handle case 16 and through which the shaft 19 passes are formed. , Shaft 19
The diameter is formed slightly smaller than that. When assembling the shaft 19, the shaft 1 is inserted into the support hole 16a.
9. Press-fit. Therefore, since the shaft 19 and the handle case 16 are in close contact with each other, they are kept watertight.

One of the two arms 18 is integrally formed with a lever 20 which penetrates through the handle case 16 and projects into the interior space of the back door 7. Note that the lever 20 does not necessarily have to be integral with the arm 18, and may be a separate lever from the arm 18 as long as it operates with the rotation of the door handle 10.

A rod 22 is rotatably attached to the tip of the lever 20 via a snap 21. The rod 22 is a link for transmitting the movement of the lever 20 to the door lock 9 attached to the lower end of the back door 7. An existing transmission mechanism such as a wire can be used instead of the link. In FIG. 1, a dashed line indicates a state where the door handle 10 is gripped. When the door handle 10 is grasped, the door handle 10 and the lever 20 rotate clockwise around the shaft 19 as shown by an arrow in the figure. Then, the rod 22 attached to the lever 20 is pushed downward, and the engagement between the door lock 9 and the striker 11 is released.

The handle case 16 is provided with an opening peripheral portion 23 expanding toward the tip of the lever 20. The lever 20 penetrates through the opening peripheral portion 23 and projects into the inner space of the back door.
Even if the lever 20 rotates, it has such a size that it does not hit the opening peripheral portion 23. A distal end of a flexible boot 24 is tightly covered on the outer periphery of the opening peripheral portion 23. The boot 24 is made of an elastomer material such as rubber and has flexibility. The tip of the boot 24 is fitted to the lever 20 and is engaged with a groove 20 a provided on the outer periphery of the lever 20. At the center of the boot 24, a bellows-shaped deformation portion is provided to allow the lever 20 to rotate.

The outer periphery of the opening peripheral portion 23 is opposed to each other with the lever 20 interposed therebetween. Rotational direction walls 23a and 23b substantially along the direction of rotation of the lever 20, and a back side in the direction of rotation of the lever 20 when the handle 10 is gripped. Rear side wall surface 23c located at
And a front side wall surface 23 on the front side in the rotation direction of the lever 20.
d. As shown in FIG. 1, the rear side wall surface 23c is inclined and expanded in a direction away from the lever 20 toward the front end in a side view.

Although the boot 24 is a flexible component as described above, when it is aged or exposed to a low temperature, the boot 24 is hardened in the steady position of the handle, that is, the shape shown by the solid line in FIG. Sometimes. In the present invention, since the rear side wall surface 23c is inclined and expanded, even when the boot 24 is hardened, the boot 24 does not come off the opening peripheral portion 23 with the rotation of the lever 20. This is because a part of the force for rotating the boot 24 acts as a force for pressing the boot 24 against the rear side wall surface 23c by the inclined widening of the rear side wall surface 23c.

FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 1 and shows a cross section of the opening peripheral portion 23 and the boot 24. Of the opening peripheral portion 23, the turning direction wall surfaces 23a and 23b substantially along the turning direction of the lever 20 are each formed in an arc shape that is convex outward. Each rotation direction wall surface 23
The rear part of the a, 23b, that is, from the center to the rear side wall surface 23c, forms a surface that expands as the lever 20 moves in the rotation direction. As described above, when the boot 24 is hardened and the boot 24 tries to rotate together with the lever 20, the boot 24 is rotated by the rotation direction wall surfaces 23a, 23a.
2B, the boot 24 moves in the expanding direction, so that the boot 24 is pressed against the opening peripheral portion 23 and further adheres to the boot.
4 does not come off the opening peripheral portion 23. FIG.
If the rear side wall surface 23c is also formed in an arc shape that protrudes outward as shown in FIG.
Since but in close contact with the entire surface of the rear side wall 23 c, further boot 24 is hardly come off.

A boss 25 is formed integrally with the handle case 16 and holds a shaft 19 that supports the lever 20. A spring 26 is disposed on the peripheral surface of the boss 25, and one end of the spring 26 is locked to the lever 20 on the tip side from the boot end, and the other end of the spring 26 is locked to the handle case 16. Have been. The spring 26 is for returning the lever 20 and the door handle 10 to the return positions. Since the spring 26 is resiliently moved between the lever 20 and the handle case 16, the rod 26 and the door lock 9 are not affected by the rattling, and the vibration of the door handle 10 causes the chattering noise during traveling. Does not occur. In addition, since one end of the spring 26 is locked to the tip of the lever 20 from the mounting position of the boot 24, rainwater or the like is blocked by the boot 24, and the spring 26 does not rust.

Of the two arms 18, 18, the lever 2
The arm 18 having no 0 is covered by the handle case 16 at its upper part. Therefore, rainwater or the like does not enter the interior space of the back door from around the arm having no lever. Garnish 27,
Reference numeral 28 denotes a decorative plate for making the connection between the outer panel and the handle case 16 invisible from the exterior.

[0017]

According to the present invention, rainwater and water generated during car washing do not enter the vehicle body even though a small and inexpensive boot is used as a waterproof device for a door handle for an automobile. Further, even if the boot hardens due to aging or low temperature, the boot does not come off the handle case. Further, the spring that springs the door handle to the return position is not exposed to rainwater or the like, so that the spring does not rust and the durability is improved. In addition, by dividing the pivot axis of the door handle into a plurality of parts, only the arm provided with the lever is covered with the boot, and the other pivot axes are covered with the handle case above the arm, so that the boot can be reduced to the minimum necessary. Can be.

[Brief description of the drawings]

FIG. 1 is a partial sectional view of a door handle to which the present invention is applied.

FIG. 2 is a perspective view of a handle case and peripheral devices.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a rear perspective view of the automobile.

FIG. 6 is a partial sectional view showing a conventional technique.

[Explanation of symbols]

Reference Signs List 9 door lock 10 door handle 16 handle case 20 lever 23 opening peripheral edge 23a , 23b rotation direction wall surface 23c back side wall surface 23d front side wall surface 24 boot 26 spring

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E05B 1/00 301 B60J 5/04

Claims (4)

(57) [Claims] 1. A door rotatably mounted on a vehicle body.
Handle(10)And the door handle(10)Integral with
Lever that pivots to open and close the door lock device(20)
And attached to the body and lever(20)Penetrates
Opening edge(23)With handle case(16)
And the lever at the tip(20)Mounted on,EndOpenMouth edge
(23)Boots with a deformed part in the center over(24)
And the periphery of the opening(23)PerimeterThe lever rotation
(23a, 23b) along the direction and the lever rotation direction back
Surface side wall (23c) and lever rotation direction front side wall surface
(23d)Back side wall(23c)
To, In its side view,DestinationendToAccording toTe
bar(20)Away fromInclinationCharacterized by being expanded
Waterproof structure of car door handle. 2. A lever times Dokata toward the wall (23a, 23b)
The vehicle according to claim 1, wherein a surface that expands from the center to the rear wall surface (23c) as it advances in the lever rotation direction is formed . Waterproof structure of door handle. Wherein one end, the other end of the handle case of the lever than the boot end (20) engaged at the distal end, the scan pulling (26) of the lever (20) spring back to the return position (26) 3. The waterproof structure for a door handle for a vehicle according to claim 2, wherein the waterproof structure is locked to (16) . 4. A plurality of arms on a door handle (10).
(18) provided with a rotatably supported the arm (18) to the handle case (16), only one arm of the plurality of arms (18), the opening peripheral edge portion of the handle case (16) (23) 3. An automobile door handle according to claim 2, wherein a lever (20) penetrating the arm is provided integrally, and a tip end side of the arm having no lever (20) is covered by a handle case (16) . Waterproof structure.