JP3405153B2 - Automotive wiper - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an automobile wiper,
In particular, the present invention relates to a vehicle wiper suitable for use in a so-called concealed wiper type vehicle in which the upper portion of the wiper unit is covered by the rear end portion of the engine hood.

[0002]

SUMMARY OF THE INVENTION In a concealed wiper type vehicle, the rear end of the engine hood extends to near the lower side of the front window panel to cover the upper portion of the wiper unit, The rear end of the engine hood comes close to the upper end of the wiper pivot of the wiper unit, so that when a collision load is applied to the rear end of the engine hood from above during a vehicle collision, the rear end of the engine hood is However, it is undeniable that the wiper pivot is restricted from deforming downward due to the wiper pivot and the amount of collision energy absorption is reduced.

Therefore, according to the present invention, when a collision load is applied to the rear end portion of the engine hood from above, the wiper pivot does not restrict downward deformation of the rear end portion of the engine hood, and the collision energy is absorbed. An object of the present invention is to provide an automobile wiper capable of improving the characteristics.

[0004]

According to the invention of claim 1, a pivot holder fixed to a vehicle body panel and a pivot arm fixedly mounted on a lower end of the pivot holder are rotatably mounted in a bearing hole of the pivot holder. In a vehicle wiper with a wiper pivot, the pivot holder is a structure in which the wiper pivot is detachably fixed downward from a vehicle body panel when a load of a predetermined value or more acts on the wiper pivot in an axial direction from above , The pivot holder is made of synthetic resin.
The bolt mounting hole of the pivot holder so that the bottom end is larger.
The diameter of the bolt is reduced to the lower side of the bolt.
Form a tapered portion with a large diameter on the end side, and
Insert and engage with the bolt mounting hole so that the upper end of the bolt is
And project a nut through the protruding end,
Below a specified value that acts on the wiper pivot from above in the axial direction.
For the above load, the bolt mounting hole should be
It is characterized by being detachably fastened.

[0005]

[0006]

According to the second aspect of the invention, the body panel is
Fixed pivot holder and pivot arm at bottom
Fixed to the bearing hole of the pivot holder
Automotive wiper with installed wiper pivot
In, the pivot holder to the wiper pivot
When a load exceeding the specified value is applied in the axial direction from above, the vehicle
It is a structure that is detachably fixed from the body panel to the lower side,
The pivot holder is provided with a clip made of synthetic resin and having a saw-toothed cross section , and the clip is press-fitted into and engaged with a clip hole of a vehicle body panel, and a predetermined value that acts on the wiper pivot in an axial direction from above. The clip is broken under the above load, and the pivot holder is detachably attached to the vehicle body panel.

According to the third aspect of the invention ,
Fixed pivot holder and pivot arm at bottom
Fixed to the bearing hole of the pivot holder
Automotive wiper with installed wiper pivot
In, the pivot holder to the wiper pivot
When a load exceeding the specified value is applied in the axial direction from above, the vehicle
It is a structure that is detachably fixed from the body panel to the lower side,
A bolt is provided on the pivot holder so that the upper end of the pivot holder projects through the vehicle body panel, and a nut made of synthetic resin is screwed onto the projecting end so that the wiper pivot has a predetermined value or more that acts axially from above. It is characterized in that the bolt is fastened so as to be detachable from the nut against a load.

According to the invention of claim 4 , in the vehicle body panel
Fixed pivot holder and pivot arm at bottom
Fixed to the bearing hole of the pivot holder
Automotive wiper with installed wiper pivot
In, the pivot holder to the wiper pivot
When a load exceeding the specified value is applied in the axial direction from above, the vehicle
It is a structure that is detachably fixed from the body panel to the lower side,
A bolt is provided on the pivot holder so that the upper end of the pivot holder protrudes through the vehicle body panel, and a push nut made of synthetic resin is attached to the protruding end so that the wiper pivot has a predetermined value or more acting in the axial direction from above. The bolt is fastened so as to be detachable from the push nut against the load.

[0010]

According to a fifth aspect of the present invention, there is provided a pivot holder fixed to a vehicle body panel, and a wiper pivot fixed to a lower end of the pivot arm and rotatably mounted in a bearing hole of the pivot holder. In an automobile wiper, the pivot holder is made of synthetic resin,
A flange portion protruding inward is formed on the inner peripheral edge of the upper portion of the bearing hole, and a retaining ring is attached to the wiper pivot, and a flat washer is provided between the lower edge of the retaining ring and the upper edge of the flange portion. It is characterized in that the wiper pivot is interposed and the flange portion is sheared by the flat washer against the load of a predetermined value or more acting on the wiper pivot in the axial direction from above so that the wiper pivot is detachably retained from the pivot holder. .

According to a sixth aspect of the present invention, there is provided an automobile including a pivot holder fixed to a vehicle body panel and a wiper pivot fixed to a lower end of a pivot arm and rotatably mounted in a bearing hole of the pivot holder. In the wiper for a vehicle, a bush made of synthetic resin is fitted and fixed to the upper end portion of the bearing hole, and a retaining ring is attached to the wiper pivot so that the lower edge of the retaining ring and the inner peripheral edge of the upper end of the bush are engaged. A flat washer is interposed between the wiper pivot and the wiper pivot.
It is characterized in that the inner peripheral portion of the bush is crushed by the flat washer so that the wiper pivot is detachably retained from the pivot holder.

According to a seventh aspect of the present invention, there is provided a vehicle including a pivot holder fixed to a vehicle body panel and a wiper pivot fixed to a lower end of the pivot arm and rotatably mounted in a bearing hole of the pivot holder. In the wiper for a vehicle, the pivot holder is made of synthetic resin and an annular groove is formed stepwise on the inner peripheral edge of the upper end of the bearing hole, while a plurality of protrusions engaging with the annular groove are provided on the outer periphery of the wiper pivot. For a load of a predetermined value or more that is engaged with the annular groove and acts on the wiper pivot from above in the axial direction,
It is characterized in that the inner peripheral portion of the bearing hole is crushed by the projection and the wiper pivot is detachably retained from the pivot holder.

[0014]

According to the invention described in claim 1, when the wiper unit is adopted in the vehicle of the concealed wiper type, a collision load acts from above on the rear end portion of the engine hood when the vehicle collides. , The rear end portion is deformed downward and interferes with the upper end of the wiper pivot, but the pivot holder is disengaged from the vehicle body panel when a collision load of a predetermined value or more acts on the wiper pivot from above in the axial direction, and the wiper pivot is removed. Since the rear end portion of the engine hood can be freely deformed downward by sinking downward and the crushing deformation stroke of the rear end portion of the engine hood can be increased, the collision energy absorption characteristics can be improved.

Moreover, when the pivot holder is disengaged from the vehicle body panel, the tapered bolt mounting hole is expanded and deformed by the taper portion of the bolt and disengaged from the taper portion, whereby the collision energy can be absorbed. The collision energy absorption characteristics can be further improved.

[0016]

According to the invention described in claim 2 , the wiper
Adopted the unit in the concealed wiper type vehicle
In the event of a vehicle collision,
When a collision load is applied from one side, the rear end part is deformed downward.
Will interfere with the top edge of the wiper pivot, but
The wiper is mounted on the wiper pivot from above at a specified value in the axial direction.
When the collision load on the
The rear end of the engine hood is
The engine hood rear end
It possible to increase the deformation deformation stroke of the part
Therefore, the collision energy absorption characteristics can be improved.
Moreover, since the collision energy can be absorbed by breaking the clip when the pivot holder is detached from the vehicle body panel, the collision energy absorption characteristic can be further improved.

According to the invention of claim 3 , the wiper
Adopted the unit in the concealed wiper type vehicle
In the event of a vehicle collision,
When a collision load is applied from one side, the rear end part is deformed downward.
Will interfere with the top edge of the wiper pivot, but
The wiper is mounted on the wiper pivot from above at a specified value in the axial direction.
When the collision load on the
The rear end of the engine hood is
The engine hood rear end
It possible to increase the deformation deformation stroke of the part
Therefore, the collision energy absorption characteristics can be improved.
Moreover, when the pivot holder is detached from the vehicle body panel, the collision energy can be absorbed by crushing the screw portion of the nut made of synthetic resin with the bolt, so that the collision energy absorption characteristic can be further improved. .

According to the invention of claim 4 , the wiper
Adopted the unit in the concealed wiper type vehicle
In the event of a vehicle collision,
When a collision load is applied from one side, the rear end part is deformed downward.
Will interfere with the top edge of the wiper pivot, but
The wiper is mounted on the wiper pivot from above at a specified value in the axial direction.
When the collision load on the
The rear end of the engine hood is
The engine hood rear end
It possible to increase the deformation deformation stroke of the part
Therefore, the collision energy absorption characteristics can be improved.
Moreover, when the pivot holder is detached from the vehicle body panel, the collision energy can be absorbed by crushing the push nut made of synthetic resin with the bolt, so that the collision energy absorption characteristic can be further improved.

[0020]

According to the invention described in claim 5 , when the wiper unit is adopted in the vehicle of the concealed wiper type, when a collision load acts on the rear end portion of the engine hood from above when the vehicle collides, The rear end portion deforms downward and interferes with the upper end of the wiper pivot, but when a collision load of a predetermined value or more acts on the wiper pivot from above,
With the flat washer that holds the wiper pivot out, the flange part at the inner peripheral edge of the upper end of the bearing hole of the synthetic resin pivot holder is sheared, and the shearing of the flange part absorbs the collision energy, and at the same time removes the wiper pivot. Since the stop is released and the wiper pivot sinks, the rear end portion of the engine hood can be free from crush deformation, and the crush deformation stroke of the rear end portion of the engine hood can be increased, thus improving the collision energy absorption characteristics. can do.

According to the sixth aspect of the present invention, when the wiper unit is adopted in the concealed wiper type vehicle, when a collision load acts on the rear end portion of the engine hood from above when the vehicle collides, The rear end portion deforms downward and interferes with the upper end of the wiper pivot, but when a collision load of a predetermined value or more acts on the wiper pivot from above,
With the flat washer that holds the wiper pivot out, the inner circumference of the bush made of synthetic resin is crushed, the collision energy is absorbed by the crush of the bush, and the wiper pivot is released and the wiper pivot is released. Since the pivot sinks and the crush deformation of the rear end of the engine hood can be made free and the crush deformation stroke of the rear end of the engine hood can be increased, the collision energy absorption characteristics can be improved.

According to the seventh aspect of the present invention, when the wiper unit is adopted in the concealed wiper type vehicle, when a collision load acts on the rear end portion of the engine hood from above when the vehicle collides, The rear end portion deforms downward and interferes with the upper end of the wiper pivot, but when a collision load of a predetermined value or more acts on the wiper pivot from above,
The protrusion that holds the wiper pivot out of place crushes the inner peripheral portion of the bearing portion from the engaging portion with the annular groove provided on the inner peripheral edge of the upper end of the bearing hole of the synthetic resin pivot holder. Collision energy is absorbed by the crushing of the inner peripheral portion, and the wiper pivot is released from the retaining state, so that the wiper pivot sinks and the crush deformation stroke of the rear end of the engine hood can be increased. The absorption characteristics can be improved.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a mounting state of a pivot holder 1 of a wiper unit, in which the base portion 2 of the pivot holder 1 is mounted on a vehicle body panel such as a cowl top panel 10.
It is superposed on the back surface of and is fastened and fixed to the cowl top panel 10 with bolts 8 and nuts 9.

The wiper pivot 4 is a pivot holder 1
Is rotatably supported in the bearing hole 3 of the above, and a pivot arm 5 connected to a drive transmission link of a wiper motor (not shown) is fixed to the lower end thereof.

The wiper pivot 4 is inserted into the bearing hole 3 of the pivot holder 1 from below, and the retaining ring 6 is attached to the upper end portion projecting upward from the bearing hole 3 and
A flat washer 7 is interposed between the retaining ring 6 and the upper edge of the bearing hole 3 to prevent retaining, and a wiper arm 30 is connected to the protruding end.

The pivot holder 1 is integrally formed of an appropriate synthetic resin material, and the bolt mounting hole 2a formed in the base portion 2 is formed in a taper shape whose lower end has a large diameter.

On the other hand, the bolt 8 has a taper portion 8a having a large diameter on the lower end side formed on the lower side thereof, and the taper portion 8a is inserted and engaged with the taper-shaped bolt mounting hole 2a.

The bolt mounting hole 2a and the taper portion 8a are formed in the same non-circular shape to prevent them from rotating.

Then, the bolt 8 is projected through the cowl top panel 10, and a nut 9 is screwed into the projecting end portion to fasten and fix the base portion 2 to the lower surface of the cowl top panel 10.

The diameters of the bolt mounting hole 2a and the tapered portion 8a of the bolt 8 are determined in consideration of the hardness of the synthetic resin material used for molding the pivot holder 1.
When a load of a predetermined value or more acts on the bolt axially from above, the bolt mounting hole 2a is arbitrarily set so that it can be expanded and deformed by the elasticity of itself by the taper portion 8a and separated from the taper portion 8a.

In FIG. 1, reference numeral 11 indicates a spring washer.

According to the configuration of the first embodiment described above, when the above-mentioned wiper unit is adopted in the vehicle of the concealed wiper type, the rear end portion of the engine hood 12 is near the lower side portion of the front window panel (not shown). The upper portion of the wiper unit is covered with the rear end of the engine hood 12, so that the upper end of the wiper pivot 4 comes close to the lower surface of the rear end of the engine hood 12.

Therefore, when a collision load is applied to the rear end of the engine hood 12 from above during a vehicle collision or the like, the rear end of the engine hood 12 is deformed downward and interferes with the upper end of the wiper pivot 4. However, when a collision load of a predetermined value or more acts on the wiper pivot 4 from above in the axial direction, the tapered bolt mounting hole 2a of the base portion 2 of the pivot holder 1 is expanded and deformed by the tapered portion 8a of the bolt 8. The pivot holder 1 is disengaged from the taper portion 8a, whereby the pivot holder 1 is disengaged from the lower surface of the cowl top panel 10 and the wiper pivot 4 is depressed, so that the rear end portion of the engine hood 12 can be freely deformed downward.

As a result, the downward crushing deformation stroke of the rear end portion of the engine hood 12 can be increased,
Collision energy absorption characteristics can be improved.

In particular, in this embodiment, when the pivot holder 1 is detached from the cowl top panel 10, the tapered bolt mounting hole 2a is elastically expanded and deformed by the tapered portion 8a of the bolt 8 to be tapered. Since the collision energy can be absorbed by being separated from the portion 8a, the absorption characteristic of the collision energy can be further improved.

FIG. 2 shows a second embodiment of the present invention, in which a pivot holder 1 in which a wiper pivot 4 is rotatably mounted in a bearing hole 3 is made of synthetic resin, and a base portion 2 thereof is a cowl top panel. Similar to the first embodiment, the lower surface of 10 is overlapped and fastened by bolts 8 and nuts 9.

Here, the bolt mounting hole 2b of the base portion 2 and the lower side portion of the bolt 8 are both formed in a straight circular shape unlike the first embodiment, but the bolt mounting hole 2
b is formed to have a diameter slightly smaller than that of the bolt 8, and the lower end portion of the bolt 8 is press-fitted into the bolt mounting hole 2b.

Further, the base portion 2 and the bolt 8 are coupled by the sear pin 13 at the bolt mounting hole 2b, and when a load of a predetermined value or more acts on the wiper pivot 4 from above in the axial direction, the sear pin 13 is sheared. The bolt mounting hole 2b is detached from the lower end of the bolt 8.

Therefore, also in the case of the second embodiment, as in the case of the first embodiment, a collision load acts on the rear end portion of the engine hood 12 from above at the time of a vehicle collision or the like, and the rear end portion is lowered. When the wiper pivot 4 is deformed to interfere with the upper end of the wiper pivot 4 and a collision load of a predetermined value or more is applied to the wiper pivot 4 from above in the axial direction, the shear pin 13 is sheared and the bolt mounting hole 2b is removed from the lower end of the bolt 8. It slides and separates in a pressure contact state, absorbs collision energy by shearing the shear pin 13 and frictional resistance when the bolt mounting hole 2b separates, and
By this detaching action, the wiper pivot 4 sinks, the downward crush deformation stroke of the rear end portion of the engine hood 12 is increased, and the collision energy absorption characteristics can be improved.

FIG. 3 shows a third embodiment of the present invention. In this embodiment, the pivot holder 1 is made of metal or synthetic resin, and the base portion 2 thereof is provided with a clip mounting hole 2c. Clips 14 of both heads made of a synthetic resin material are press-fitted and attached to the clip mounting holes 2c, and the upper clip heads are attached to the clip holes 1 of the cowl top panel 10.
0a is press-fitted and engaged from the lower side, and when a load of a predetermined value or more is applied to the wiper pivot 4 from the upper side in the axial direction, the clip head on the upper side or the lower side is broken and the clip hole 10a or the clip mounting hole 2c. To leave.

Therefore, according to the third embodiment, at the time of a vehicle collision, a collision load acts on the rear end of the engine hood 12 from above and the rear end is deformed downward so that the upper end of the wiper pivot 4 is deformed. When they interfere with each other and a collision load of a predetermined value or more is applied to the wiper pivot 4 from above in the axial direction, the upper or lower clip head is broken by the edge of the clip hole 10a or the edge of the clip mounting hole 2c, and the clip 14 is detached. The destruction of the clip head absorbs the collision energy, and the detachment action of the clip 14 sinks the wiper pivot 4 to expand the downward crushing deformation stroke of the rear end of the engine hood 12 to absorb the collision energy. The characteristics can be improved.

Although the clip 14 is a separate body in the third embodiment, when the pivot holder 1 is made of synthetic resin, the clip 14 is formed as shown in the fourth embodiment of FIG. 4A or 4B. Can be integrally formed with the base portion 2, and the shape of the clip head can be arbitrarily formed into a normal arrowhead shape as shown in FIG. 4 (A) or a serrated cross section as shown in FIG. 4 (B). Can be formed.

[0045] Figure 5 shows a fifth embodiment of the present invention, and fixed to the base portion 2 to the bolt 8 of the pivot holder 1, are passed through projects above the cowl top panel 10 to the upper end of the bolt 8 , A nut 9A made of an appropriate synthetic resin material is screwed onto the protruding end portion, and the bolt 8 is detached from the resin nut 9A against a load of a predetermined value or more acting on the wiper pivot 4 from above in the axial direction. It is concluded as possible.

Therefore, in the structure of the fifth embodiment, the engine hood 12 at the time of a vehicle collision is the same as in the above embodiments.
When a load of a predetermined value or more is applied to the wiper pivot 4 from above via the rear end portion in the axial direction, the bolt 8 breaks the threaded portion of the resin nut 9A, and the bolt 8 is detached. While the collision energy is absorbed by the destruction of the portion, the wiper pivot 4 sinks due to the detaching action of the bolt 8, and the downward collapse deformation stroke of the rear end portion of the engine hood 12 is enlarged to improve the collision energy absorption characteristics. be able to.

In the sixth embodiment shown in FIG. 6, in place of the resin nut 9A of the fifth embodiment, a push nut 9B made of an appropriate synthetic resin material is attached to the protruding end portion of the bolt 8, The effect similar to that of the fifth embodiment can be obtained.

7 and 8 show a seventh embodiment of the present invention. In this embodiment, the pivot holder 1 is overlapped with the lower surface of the cowl top panel 10 and fastened and fixed by bolts 8 and nuts 9. In the base part 2, these bolts 8,
An easily rupturable portion 15 that is rupturable against a load of a predetermined value or more that acts on the wiper pivot 4 from above in the axial direction is provided at a portion inside the fastening portion by the nut 9.

The easily breakable portion 15 can be easily constructed by, for example, forming a thin portion by forming a notch linearly on the lower surface side of the base portion 2 so as to divide the fastening portion.

Therefore, also in the case of the seventh embodiment, when a load of a predetermined value or more is axially applied to the wiper pivot 4 from above via the rear end of the engine hood 12 at the time of a vehicle collision, the base portion of the pivot holder 1 will be described. 2 is the easily breakable part 15
It is detached from the cowl top panel 10 leaving a portion that is broken from and is fastened by the bolt 8 and the nut 9, and absorbs collision energy by breaking the easily breakable portion 15,
The disengaging action of the base portion 2 causes the wiper pivot 4 to sink, and the downward crushing deformation stroke of the rear end portion of the engine hood 12 can be expanded to improve the collision energy absorption characteristics.

In the case of this embodiment, the pivot holder 1
By selecting the material and the notch depth of the easily breakable portion 15, the amount of collision energy absorbed by the breakage of the easily breakable portion 15 can be tuned arbitrarily.

FIG. 9 shows an eighth embodiment of the present invention. In this embodiment, the pivot holder 1 is made of synthetic resin, and a flange portion 16 projecting inward is integrally formed on the inner peripheral edge of the upper portion of the bearing hole 3. I am doing it.

Then, a flat washer 7 for retaining the wiper pivot 4 is attached to the upper edge of the flange portion 16,
When a load of a predetermined value or more is applied to the wiper pivot 4 from above in the axial direction, the flange portion 16 is sheared by the outer peripheral edge of the flat washer 7 so as to prevent the wiper pivot 4 from coming off.

Therefore, according to the eighth embodiment, when a collision load of a predetermined value or more acts on the wiper pivot 4 from above via the rear end portion of the engine hood 12 in the case of a vehicle collision, the wiper pivot 4 is affected. The flange portion 16 is sheared by the outer peripheral edge of the flat washer 7 that prevents the wiper pivot 4 from absorbing the collision energy, and the wiper pivot 4 is released from the retainer and sinks into the engine hood. The downward crushing deformation stroke of the rear end portion 12 is expanded, and the collision energy absorption characteristics can be improved.

FIG. 10 shows a ninth embodiment of the present invention. In this embodiment, bushes 17 and 18 are fitted and fixed to the upper and lower ends of the bearing hole 3 of the pivot holder 1, and these bushes 17 and 18 are fixed. Thus, the wiper pivot 4 is rotatably supported.

Here, at least the upper bush 17 is made of synthetic resin, and a flat washer 7 for retaining the wiper pivot 4 is attached on the inner peripheral edge of the upper end of the bush 17, and the wiper pivot 4 is axially attached from above. When a load of a predetermined value or more is applied to the inner surface of the bush 17, the inner peripheral portion of the bush 17 is crushed by the outer peripheral edge of the flat washer 7 so that the wiper pivot 4 can be detached.

Therefore, also in the case of the ninth embodiment, when a collision load of a predetermined value or more acts on the wiper pivot 4 from above via the rear end of the engine hood 12 at the time of a vehicle collision, the wiper pivot 4 is moved. The bushing 17 is crushed so as to scrape off the inner peripheral portion of the bush 17 at the outer peripheral edge of the flat washer 7 which is prevented from being disengaged, the collision energy is absorbed by the crushing of the inner peripheral portion of the bush 17, and the wiper pivot 4 prevents the disengagement. When it is released and sinks, the downward crush stroke of the rear end portion of the engine hood 12 is expanded, and the collision energy absorption characteristics can be improved.

FIG. 11 shows a tenth embodiment of the present invention. In this embodiment, the pivot holder 1 is made of synthetic resin, and an annular groove 19 is formed stepwise on the inner peripheral edge of the upper end of the bearing hole 3. .

On the other hand, a plurality of protrusions 20 are provided on the outer periphery of the upper portion of the wiper pivot 4, and the protrusions 20 are provided.
Is engaged with the annular groove 19 and a load of a predetermined value or more acts on the wiper pivot 4 from above in the axial direction, the projection 2
At 0, the inner peripheral portion of the bearing hole 3 is crushed to prevent the wiper pivot 4 from coming off.

Therefore, according to the tenth embodiment, when a collision load of a predetermined value or more acts on the wiper pivot 4 from above via the rear end portion of the engine hood 12 during a vehicle collision, the wiper pivot 4 is prevented from coming off. Protrusion 20
The inner peripheral portion of the bearing hole 3 is crushed so as to be scraped away from the engaging portion with the annular groove 19, the collision energy is absorbed by the inner peripheral portion of the bearing hole 3 is crushed, and the wiper pivot 4 is prevented from coming off. Engine hood 12 released and submerged
The downward crushing stroke of the rear end portion of the rear end portion is expanded, and the collision energy absorption characteristics can be improved.

Further, according to this embodiment, the wiper pivot 4 is prevented from being pulled out by the engagement of the projection 20 on the outer periphery thereof and the annular groove 19 of the bearing hole 3, so that a dedicated retaining member can be eliminated. Therefore, it is possible to obtain a cost advantage.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing a second embodiment of the present invention.

FIG. 3 is a sectional view showing a third embodiment of the present invention.

FIG. 4 is a sectional view showing a fourth embodiment of the present invention.

FIG. 5 is a sectional view showing a fifth embodiment of the present invention.

FIG. 6 is a sectional view showing a sixth embodiment of the present invention.

FIG. 7 is a sectional view showing a seventh embodiment of the present invention.

FIG. 8 is a plan view of a pivot holder according to a seventh embodiment of the present invention.

FIG. 9 is a sectional view showing an eighth embodiment of the present invention.

FIG. 10 is a sectional view showing a ninth embodiment of the present invention.

FIG. 11 is a sectional view showing a tenth embodiment of the invention.

[Explanation of symbols]

1 pivot holder 2 base 2a, 2b Bolt mounting hole 3 bearing holes 4 wiper pivot 5 pivot arms 6 retaining ring 7 flat washers 8 volt 8a taper part 9 nuts 9A resin nut 9B push nut 10 Body panel 10a clip hole 13 Shea Pin 14 clips 15 Easy break 16 Flange 17 Bush 19 annular groove 20 protrusions

Continuation of the front page (56) Reference JP 62-99244 (JP, A) JP 7-81586 (JP, A) JP 7-251715 (JP, A) JP 9-95245 (JP , A) JP 8-268235 (JP, A) JP 59-84667 (JP, A) JP 11-34808 (JP, A) Actual flat 6-75930 (JP, U) Actual JP 62-23758 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60S 1/00-1/68 B62D 1/00-1/28

Claims (7)

(57) [Claims] 1. A wiper for an automobile, comprising: a pivot holder fixed to a vehicle body panel; and a wiper pivot fixed to a lower end of a pivot arm and rotatably mounted in a bearing hole of the pivot holder. Is a structure in which the wiper pivot is detachably fixed downward from the vehicle body panel when a load greater than a predetermined value is applied to the wiper pivot in the axial direction from above.
Made of synthetic resin, the bolt mounting hole of the pivot holder
While forming the taper shape where the lower end side has a large diameter,
A taper part whose lower end has a large diameter is formed in the lower part, and the taper part is formed.
Insert the top part into the bolt mounting hole and engage the top part of the bolt.
Project through the car body panel and attach a nut to the protruding end.
It is screwed and acts on the wiper pivot from above in the axial direction.
The bolt mounting hole is
For automobiles characterized by being removably fastened
Wiper. 2. A pivot holder fixed to a vehicle body panel.
And a pivot arm fixedly attached to the lower end of the pivot arm.
Wiper pivot rotatably mounted in bearing hole of ruder
A vehicle wiper having a
Move the rudder to the wiper pivot from above at a specified value in the axial direction.
Can be detached downward from the vehicle body panel when an upper load is applied.
The pivot holder is provided with a synthetic resin clip having a saw-tooth cross section , and the clip is press-fitted into and fixed to the clip hole of the vehicle body panel to act on the wiper pivot from above in the axial direction. A wiper for an automobile, wherein the clip is broken and the pivot holder is detachably attached to the vehicle body panel under a load of a predetermined value or more. 3. A pivot holder fixed to a vehicle body panel.
And a pivot arm fixedly attached to the lower end of the pivot arm.
Wiper pivot rotatably mounted in bearing hole of ruder
A vehicle wiper having a
Move the rudder to the wiper pivot from above at a specified value in the axial direction.
Can be detached downward from the vehicle body panel when an upper load is applied.
The pivot holder is provided with a bolt, the upper end of which is projected through the vehicle body panel, and a nut made of synthetic resin is screwed onto the protruding end so that the wiper pivot is fixed from above. A wiper for an automobile, wherein the bolt is detachably fastened from a nut against a load of a predetermined value or more acting in the axial direction. 4. A pivot holder fixed to a vehicle body panel.
And a pivot arm fixedly attached to the lower end of the pivot arm.
Wiper pivot rotatably mounted in bearing hole of ruder
A vehicle wiper having a
Move the rudder to the wiper pivot from above at a specified value in the axial direction.
Can be detached downward from the vehicle body panel when an upper load is applied.
The structure of the pivot holder is provided with bolts, the upper end of which is projected through the body panel, and a push nut made of synthetic resin is attached to the protruding end so that the upper end of the wiper pivot is fixed. The wiper for an automobile, wherein the bolt is detachably fastened from the push nut against a load of a predetermined value or more acting in the axial direction. 5. A vehicle wiper comprising: a pivot holder fixed to a vehicle body panel; and a wiper pivot fixed to a lower end of a pivot arm and rotatably mounted in a bearing hole of the pivot holder. Is made of a synthetic resin, and a flange portion projecting inward is formed on the inner peripheral edge of the upper portion of the bearing hole, and a retaining ring is attached to the wiper pivot to attach the retaining ring to the lower edge and the upper edge of the flange portion. A flat washer is interposed between the wiper pivot and the wiper pivot so that the wiper pivot can be detached from the pivot holder by shearing the flange with the flat washer against a load of a predetermined value or more that acts on the wiper pivot in the axial direction from above. A wiper for an automobile characterized by the above. 6. A vehicle wiper comprising: a pivot holder fixed to a vehicle body panel; and a wiper pivot fixed to a lower end of a pivot arm and rotatably mounted in a bearing hole of the pivot holder. While a synthetic resin bush is fitted and fixed to the upper end, a retaining ring is attached to the wiper pivot, and a flat washer is interposed between the lower edge of the retaining ring and the inner peripheral edge of the upper end of the bush. The wiper pivot is characterized in that the wiper pivot is detachably retained from the pivot holder by crushing the inner peripheral portion of the bush with the flat washer against a load of a predetermined value or more acting on the wiper pivot in the axial direction from above. Car wiper. 7. A vehicle wiper comprising: a pivot holder fixed to a vehicle body panel; and a wiper pivot fixed to a lower end of a pivot arm and rotatably mounted in a bearing hole of the pivot holder. An annular groove is formed stepwise on the inner peripheral edge of the upper end of the bearing hole made of synthetic resin, while a plurality of protrusions engaging with the annular groove are provided on the outer periphery of the wiper pivot, and the protrusions are engaged with the annular groove to form a wiper. For automobiles, characterized in that the inner peripheral portion of the bearing hole is crushed by the projections against the load of a predetermined value or more acting on the pivot from above in the axial direction, and the wiper pivot is detachably retained from the pivot holder. Wiper.