JP2003002241A - Cowl top for vehicle, and its attaching method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cowl top for a vehicle and its attaching method that can reduce working man-hours required for the production of a vehicle. SOLUTION: This cowl top 20 arranged at the lower part of the windshield and attached to a dashboard upper panel is formed in box shape by jointing an upper member 21 and a lower member 22. A wiper arm driving device 42 for driving a wiper arm 41 for cleaning the windshield comprises a motor 43 enclosed in a space part S inside the cowl top 20, and a driving force transmission mechanism 44 arranged at the lower face of the cowl top 20 to transmit the driving force of the motor 43 to the wiper arm 41. After mounting the wiper arm driving device 42 and the wiper arm 41 to the cowl top 20, the cowl top 20 is attached to the dashboard upper panel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cowl top arranged under a windshield of a vehicle and a method for assembling the cowl top.

[0002]

BACKGROUND ART A cowl top is arranged below a windshield of a four-wheel vehicle, and the windshield is cleaned by a wiper device. The windshield wiper device includes a windshield cleaning wiper arm that cleans the windshield with a blade, and a wiper arm drive device that drives the wiper arm.The wiper arm drive device includes a motor and a motor. And a drive force transmission mechanism for transmitting the drive force of the motor to the wiper arm.

Conventionally, a motor and a driving force transmission mechanism of a wiper arm driving device are mounted on a bracket of a dashboard panel which is arranged under the cowl top and which forms a part of a vehicle body. Is assembled to the dashboard panel above these motors and the driving force transmission mechanism, and at the time of this assembly, the rotary shaft of the driving force transmission mechanism is inserted into the through hole formed vertically through the cowl top. A wiper arm is coupled to the tip of the protruding rotation shaft.

Therefore, in order to assemble a cowl top to a vehicle body to produce a vehicle in the related art, first, a motor of a wiper arm drive device and a drive force transmission mechanism are formed in a space formed by a dashboard panel. Bring it to the section and attach these motors and driving force transmission mechanism to the bracket provided on the dashboard panel,
Next, while inserting the rotary shaft of the driving force transmission mechanism into the through hole of the cowl top, the cowl top is assembled to the dashboard panel, and then the wiper arm is coupled to the rotary shaft protruding from the through hole of the cowl top. Work was being done.

[0005]

Therefore, conventionally, the work for attaching the wiper arm drive device to the vehicle and the work for assembling the cowl top to the vehicle are performed separately on the vehicle production line. As a result, the number of man-hours required for vehicle production has increased.

An object of the present invention is to provide a cowl top for a vehicle and a method for assembling the cowl top, which can reduce the number of man-hours required for vehicle production.

[0007]

A cowl top of a vehicle according to the present invention is arranged below a windshield of the vehicle,
In a cowl top of a vehicle to be assembled to a vehicle body of a vehicle, a wiper arm driving device for driving a windshield cleaning wiper arm is attached in advance before being assembled to the vehicle body.

In the method for assembling a cowl top of a vehicle according to the present invention, a wiper arm driving device for driving a windshield cleaning wiper arm is attached to the cowl top, and then the cowl top is attached to a lower portion of the windshield. It is characterized in that it is arranged and assembled to the vehicle body.

According to the present invention, first, the wiper arm driving device for driving the windshield cleaning wiper arm is attached to the cowl top, so that the cowl top becomes a module member provided with the wiper arm driving device in advance. After that, since the work of assembling the cowl top to the vehicle body is performed, the wiper arm drive device will be naturally attached to the vehicle body when the cowl top is assembled to the vehicle body, and the work man-hours required for vehicle production can be reduced accordingly. .

Further, the work for attaching the wiper arm drive device to the cowl top can be performed in a work space different from the vehicle production line whose periphery is largely opened or in a work space whose periphery is largely opened in the vehicle production line, The conventional work of bringing the motor and drive force transmission mechanism that make up the wiper arm drive device into the narrow space formed by the dashboard panel of the vehicle body and attaching these motor and drive force transmission mechanism to the bracket of the dashboard panel Compared with, the work can be facilitated and the efficiency can be improved.

In the method for assembling a cowl top of a vehicle according to the present invention, the work of connecting the windshield cleaning wiper arm to the wiper arm driving device may be performed before the cowl top is assembled to the vehicle body. You may go after assembling to.

However, it is preferable to adopt the former.
According to the former, when the cowl top is assembled to the vehicle body, the windshield cleaning wiper arm can be placed on the vehicle body at the same time, which further reduces the number of work steps, facilitates the work, and improves the work efficiency. You can do it.

In the present invention described above, the cowl top may be panel-shaped or box-shaped, and its shape and structure are arbitrary.

The cowl top may be made of sheet metal,
It may be made of synthetic resin or a composite material composed of two or more kinds of materials.

The cowl top may be manufactured by press molding or injection molding, and its manufacturing means is arbitrary.

In the present invention, if the cowl top is not a panel-like one but a box-like one with a space inside, the cowl top becomes three-dimensional and the strength of the cowl top itself increases. As described above, since the wiper arm drive device is attached, the cowl top that is also the attachment member of the wiper arm drive device can increase the attachment strength of the wiper arm drive device to the vehicle body.

When the cowl top has a box shape with a space inside as described above, the box shape may have an upper surface portion and a lower surface portion and left and right side surfaces are open, or It may have an upper surface portion, a lower surface portion, and left and right side surface portions, or may have an upper surface portion, left and right side surface portions, and an open lower surface, and the box shape thereof is arbitrary.

When the cowl top has a box shape having a space inside, the space may accommodate at least a part of the wiper arm driving device.

According to this, the volume of the entire cowl top including the wiper arm driving device can be reduced as compared with the case where the entire wiper arm driving device is attached to the outer surface of the cowl top without housing in the space. As a result, the handleability of the cowl top when assembling the cowl top to the vehicle body can be improved, and the wiper arm drive device housed in the space during and after the assembling work. The part of can be effectively protected by the cowl top.

The wiper arm driving device comprises a motor and a driving force transmission mechanism for transmitting the rotational driving force of the motor to the windshield cleaning wiper arm,
When the cowl top formed in a box shape has an upper surface portion and a lower surface portion, and a space portion inside the cowl top is formed between the upper surface portion and the lower surface portion, A stud may be installed between the upper surface portion and the lower surface portion, and the rotating shaft, which is a constituent member of the driving force transmission mechanism, may be rotatably inserted into the stud.

According to this, the stud that is provided between the upper surface portion and the lower surface portion of the cowl top and serves as a reinforcing member for increasing the strength of the cowl top can rotate the rotary shaft of the driving force transmission mechanism. It can also be utilized as a bearing member for supporting.

Further, the wiper arm driving device includes a motor and a driving force transmission mechanism for transmitting the rotational driving force of the motor to the windshield cleaning wiper arm, and a cowl formed in a box shape. If the top has an upper surface portion and a lower surface portion and a space portion inside the cowl top is formed between the upper surface portion and the lower surface portion, the upper surface portion and the lower surface portion A rotary shaft, which is a constituent member of the driving force transmission mechanism, may be rotatably installed between them.

According to this, the rotating shaft of the driving force transmission mechanism can be supported by the upper surface portion and the lower surface portion of the cowl top,
The upper surface portion and the lower surface portion can be utilized as a bearing portion for the rotary shaft.

In these cases, the driving force transmission mechanism may be a link mechanism, a gear mechanism having one or a plurality of gears, or a combined system of the link mechanism and the gear mechanism, The driving force transmission method is arbitrary.

Further, the rotary shaft of the driving force transmission mechanism in these cases may be a shaft which is disposed at the end of the driving force transmission mechanism in the motor driving force transmission direction and to which the windshield cleaning wiper arm is coupled. Alternatively, it may be a member disposed midway in the motor driving force transmitting direction in the driving force transmitting mechanism.

Further, the rotational driving force of the motor in these cases may be one that rotates only in one direction, or one that alternately reciprocates in one direction and the other direction. The rotating shaft in the driving force transmission mechanism may also rotate only in one direction, or may alternately reciprocate in one direction and the other direction.

When the cowl top has a box-like shape having an upper surface portion and a lower surface portion and an inner space portion, the cowl top may be formed as a one-piece integral member. The cowl top is configured to include an upper member and a lower member, the upper member forms an upper surface portion, and the lower member forms a lower surface portion, and the upper member and the lower member are joined to form the upper member and the lower member. A space may be provided between them.

However, if the cowl top is the former, the mold for manufacturing the cowl top becomes complicated, so the cowl top is preferably the latter.

When the cowl top is the latter, both the upper member and the lower member may be made of sheet metal press, or both the upper member and the lower member may be made of synthetic resin.

When both the upper member and the lower member are made of a sheet metal press, the work of forming the upper member and the lower member into a predetermined shape in order to provide a space inside the cowl top can be easily performed by sheet metal pressing. Besides, the work for joining the upper member and the lower member can be performed by welding work such as spot welding, and the cowl top can be easily manufactured.

If both the upper member and the lower member are made of synthetic resin, the work of molding the upper member and the lower member into a predetermined shape can be easily performed by injection molding in order to provide a space inside the cowl top. At the same time, the work of joining the upper member and the lower member can be performed by a joining work such as adhesion, which also makes it possible to easily manufacture the cowl top.

In the present invention described above, the number of windshield cleaning wiper arms driven by the wiper arm driving device may be two, one or three, and the number is arbitrary. When the number of wiper arms is plural, a wiper arm driving device may be provided for each wiper arm.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a state in which a cowl top 20 according to an embodiment of the present invention is assembled to a vehicle body of a four-wheel vehicle. Since this four-wheeled vehicle is a front engine type vehicle in which the engine is arranged in the front part of the vehicle body, an engine room 1 which is opened and closed by a bonnet (not shown) is formed in the front part of the vehicle body. A dashboard upper panel 3 that forms a part of the vehicle body at the rear of the engine room 1 and below the windshield 2 and that partitions the dashboard lower panel 4 between the engine room 1 and the vehicle interior space. The cowl top 20 is placed under the windshield 2 and assembled to the dashboard upper panel 3 (see FIGS. 6 and 7).

The windshield 2 is attached to the cowl top 20 before being assembled to the dashboard upper panel 3.
The wiper device 40 for cleaning is previously attached. Therefore, the cowl top 20 is a module member provided with the wiper device 40 in advance.

FIG. 2 is a perspective view showing the cowl top 20 before assembly. The cowl top 20 is composed of an upper member 21 and a lower member 22, and both of the upper member 21 and the lower member 22 are manufactured by pressing a sheet metal. Upper member 2
1 is a flange portion 21A on the front side of the vehicle and a flange portion 21.
A rising part 21B that rises while tilting from A to the rear of the vehicle
And an upper surface portion 21C extending from the rising portion 21B toward the rear of the vehicle.
And a flange portion 21D on the rear side of the vehicle formed at the rear end of the upper surface portion 21C. The lower member 22 includes a flange portion 22A on the vehicle front side, a lower surface portion 22B extending from the flange portion 22A to the vehicle rear side, a rising portion 22C that rises from the lower surface portion 22B toward the vehicle rear side, and a rear end of the rising portion 22C. The formed vehicle rear side flange portion 22D.

Flange portions 21A and 22A on the vehicle front side of the upper member 21 and the lower member 22 and a flange portion 21D on the vehicle rear side.
22D is joined by spot welding to form a box-shaped cowl top 20 that is long in the vehicle width direction and has a space portion S inside as shown in FIG. The cowl top 20 has an upper surface portion 21C of the upper member 21.
And the lower surface 22B of the lower member 22, the left and right side surfaces are open.

As shown in FIG. 2, the wiper device 40 shown in FIG. 1 includes two wiper arms 41 each having a blade 41A for cleaning the windshield 2, and these windshield cleaning devices. Wiper arm drive device 4 for driving the wiper arm 41 for use
It consists of 2. The wiper arm drive device 42 includes a motor 43 as a drive source and a drive force transmission mechanism 44 for transmitting the rotational drive force of the drive shaft 43A of the motor 43 to each wiper arm 41.

The driving force transmission mechanism 44 is formed by a link mechanism. That is, the driving force transmission mechanism 44 is a base link member 45 whose base end is coupled to the drive shaft 43A of the motor 43, and two end portions of the base link member 45 are rotatably connected to the tip end of the base link member 45. Connecting link members 46, and two swing link members 4 whose distal ends are rotatably connected to the other end of each connecting link member 46.
7, rotary shafts 48 connected to the base ends of the respective swing link members 47, and studs 49 into which these rotary shafts 48 are rotatably inserted.

On the lower surface 22B of the lower member 22, the motor 4
A hole 50 for inserting the drive shaft 43A of No. 3 from above and a hole 51 for inserting each stud 49 from below are formed, and the tip of each stud 49 is provided on the upper surface portion 21C of the upper member 21. A hole 52 is formed for inserting the portion and the tip of the rotary shaft 48 from the bottom and projecting the tip upward.

Furthermore, a plurality of elongated holes 53 are formed in the upper surface portion 21C of the upper member 21, and the lower surface portion 22B of the lower member 22.
And an opening 54 that extends over the rising portion 22C.
These elongated holes 53 and openings 54 serve as an outside air introducing portion for introducing outside air into the vehicle interior space when the cowl top 20 is assembled to the dashboard upper panel 3 described above and a vehicle is produced. Further, the opening 54 is provided for leading out the harness extending from the motor 43 to the outside of the cowl top 20 and for performing the work required in the space S inside the cowl top 20. is there. Since the opening 54 is provided in the lower member 22, the weight of the cowl top 20 is reduced accordingly.

The opening 54 of this embodiment extends over the lower surface 22B and the rising portion 22C of the lower member 22, but the opening formed in the lower member 22 is formed by the lower member 22.
It may be provided only on B or only on the rising portion 22C.

When the work for attaching the wiper device 40 to the cowl top 20 is performed, the cowl top 20 is formed into a box-like shape having a space S inside by joining the upper member 21 and the lower member 22 by spot welding as described above. It is assembled. In order to attach the wiper device 40 to the cowl top 20, the motor 43 is inserted into the space S, the drive shaft 43A is inserted into the hole 50, and the motor 43 is inserted by the screw 55 from the lower side of the lower member 22. 22.

Further, as shown in FIG. 3, a through hole 49A is formed vertically through each stud 49.
The rotary shaft 48 is inserted from below, and a washer 56 is fitted to the tip of the rotary shaft 48 protruding from the upper end of the stud 49, and the C ring 57 is fitted in the groove 48A of the rotary shaft 48 above the washer 56. By engaging
The rotation shaft 48 is prevented from coming off from the stud 49.

In this state, by inserting the stud 49 into the hole 51 of the lower member 22 from below, the large-diameter flange portion 49B at the lower end of the stud 49 is attached to the lower surface portion 22B of the lower member 22, as shown in FIG. The small diameter male screw portion 49C at the tip of the stud 49 is inserted into the hole 52 of the upper member 21 and protrudes upward while being abutted from below, and formed with a larger diameter than the small diameter male screw portion 49C under the small diameter male screw portion 49C. The upper surface portion 21C of the upper member 21 is applied to the upper surface shoulder portion 49E of the stud main body portion 49D, and the small diameter male screw portion 49C is formed.
The nut 58 is screwed on and tightened. S5-S5 in FIG.
As shown in FIG. 5, which is a sectional view taken along the line, the stud 4
A plurality of protrusions 49F that protrude in the outer diameter direction are circumferentially formed on the main body portion 49D of 9 and the protrusions 49F are provided in the holes 51 when the nut 58 is tightened.
The stud 49 is erected between the upper member 21 and the lower member 22 while being prevented from rotating by tightening the nut 58.

Further, the base end of the base link member 45 in the driving force transmission mechanism 44 is attached to the drive shaft 43A of the motor 43 protruding downward from the hole 50 of the lower member 22 shown in FIG. Join. Further, as shown in FIG. 4, by fitting the tapered portion 48B formed with serrations at the tip of the rotary shaft 48 into the tapered hole 41B at the base end portion of the wiper arm 41 shown in FIG. The rotary shaft 48 and the wiper arm 41 are engaged in serrations, and the nut 60 is screwed into the male screw portion 48C at the tip of the rotary shaft 48 and tightened. As a result, the wiper arm 41 is coupled to the rotary shaft 48.

As described above, the wiper arm drive device 42 including the motor 43 and the drive force transmission mechanism 44 is attached to the cowl top 20, and the wiper arm 41 driven by the wiper arm drive device 42 is also wiped. It is attached to the cowl top 20 via the drive device 42. The motor 43 is housed and arranged in the space S inside the box-shaped cowl top 20, and the driving force transmission mechanism 44 is arranged on the lower surface 22B of the cowl top 20 so as to be exposed from the cowl top 20. It will be.

In the above description, before the stud 49 is installed between the upper member 21 and the lower member 22 by tightening the nut 58, the rotary shaft 48 is inserted into the through hole 49A of the stud 49.
The washer 56 to the rotary shaft 48, the groove 48
Although the C ring 57 is engaged with A, the order of these operations may be reversed.

In the above description, the cowl top 20
The work of attaching the driving force transmission mechanism 44 to the base member 4 is performed.
5, the connecting link member 46 and the swinging link member 47 were connected to each other, and the driving force transmission mechanism 44 was assembled, but the driving force transmission mechanism to the cowl top 20 was performed while performing the assembling work. You may perform the attachment work of 44 mentioned above.

FIG. 6 shows the assembling work of the cowl top 20 to the dashboard upper panel 3. A pin 61 is projectingly provided on the vehicle rear outer surface of the rising portion 22C of the lower member 22 of the cowl top 20. Also, the upper member 2
1 and flange portions 21A, 22A on the vehicle front side of the lower member 22
A hole 62 is formed in the hole. Then, a pin receiving member 63 made of an elastic material having a through hole 63A is attached to a hanging portion 3A below the windshield 2 in the dashboard upper panel 3, which is opposite to the hanging portion 3A of the dashboard upper panel 3. Side end portion 3 which is the end portion on the side and protrudes toward the engine room 1 side described above.
A hole 64 is formed in B.

As shown in FIG. 7, in order to assemble the cowl top 20 to the dashboard upper panel 3 in the lower part of the windshield 2, the pin 61 is press-fitted into the through hole 63A of the pin receiving member 63, and Front flange portions 21A, 2 of the member 21 and the lower member 22
2A to the horizontal end 3B of the dashboard upper panel 3
Put on. Next, the holes 62 of the flange portions 21A and 22A
The shaft portion of the bolt 65 is inserted through, and the nut 65A is screwed into the shaft portion protruding downward from the hole 62 and tightened. As a result, the cowl top 20 is assembled at a predetermined position on the dashboard upper panel 3.

Since the windshield cleaning wiper device 40 including the wiper arm 41 and the wiper arm drive device 42 is previously attached to the cowl top 20, the above-mentioned dashboard upper panel 3 of the cowl top 20 is attached to the cowl top 20. By this assembly, the wiper device 40 is also attached to the vehicle body.

After the vehicle is completed as described above, when the drive shaft 43A of the motor 43 of the wiper device 40 rotates in one direction, the base link member 45 of the drive force transmission mechanism 44 rotates in the same direction. The swing link member 47 and the rotary shaft 48 are alternately reciprocally rotated in one direction and the other direction via the connecting link member 46, and the wiper arm 41 performs the same movement as this movement, whereby the wiper arm 41
The windshield 2 is cleaned by the blade 41A.

According to the present embodiment described above, the dashboard upper panel 3 in which the cowl top 20 arranged under the windshield 2 forms a part of the vehicle.
Since the wiper arm drive device 42 of the wiper device 40 is attached to the cowl top 20 in advance before being assembled to the vehicle, when the cowl top 20 is assembled to the dashboard upper panel 3, the wiper arm drive device 42 is automatically attached to the vehicle body. It will be installed, which will reduce the number of man-hours required for vehicle production.

Further, the work for attaching the wiper arm drive device 42 to the cowl top 20 is performed in a work space different from the vehicle production line in which the periphery is largely opened, or in the vehicle production line in which the periphery is largely opened. Etc. For this reason, the motor and the driving force transmission mechanism of the wiper arm drive device are brought into a narrow space formed by the dashboard panel of the vehicle body, and these motors and the driving force transmission mechanism are attached to the bracket of the dashboard panel. It is not necessary to perform the work, and the work can be made easier and more efficient.

Further, in the present embodiment, since the wiper arm 41 driven by the wiper arm drive device 42 is attached to the wiper arm drive device 42, the cowl top 20 is assembled to the dashboard upper panel 3, When the cowl top 20 is assembled to the dashboard upper panel 3, the wiper arm 41 can be arranged on the vehicle body at the same time, which can further reduce the number of work steps, facilitate the work, and improve the work efficiency.

The cowl top 20 has a space S on the inside.
Cowl top 2 because it has become a box shape
Therefore, the cowl top 20 can be effectively used as a mounting member for the wiper arm drive device 42.

Further, since the motor 43 forming a part of the wiper arm drive device 42 is housed in the space S inside the cowl top 20, the cowl top 20 including the wiper arm drive device 42 is accommodated. Can be made smaller than the case where the entire wiper arm drive device 42 is arranged so as to be exposed from the cowl top 20. Therefore, the handleability of the cowl top 20 in a vehicle production line or the like can be improved,
Further, the motor 43 stored in the space S inside the cowl top 20 can be protected by the box-shaped cowl top 20 during or after the assembling work of the cowl top 20 to the dashboard upper panel 3. .

Further, the box-shaped cowl top 20 having the upper surface portion 21C and the lower surface portion 22B is provided with a stud 49 which is provided between the upper surface portion 21C and the lower surface portion 22B. The strength of the cowl top 20 is reinforced by the stud 49, and the rotary shaft 48 of the driving force transmission mechanism 44 is rotatably inserted into the stud 49. Therefore, the stud 49 can be utilized as a bearing member for the rotary shaft 48. The number of members can be reduced and the structure can be simplified.

Since the cowl top 20 is formed by joining the upper member 21 and the lower member 22 made of sheet metal press,
Even if the cowl top 20 is formed into a three-dimensional box, an upper member 21 and a lower member 22 having a predetermined shape are produced by a press die having a relatively simple molding surface shape, and the upper member 21 and the lower member 22 are joined together. The cowl top 20 can be easily produced by such a simple operation.

Since the cowl top 20 is composed of only the upper member 21 and the lower member 22, the cowl top 20 can be manufactured with a small number of members, and the upper member 21 and the lower member 2 can be manufactured.
Since 2 is made of sheet metal press, sufficient strength can be secured.

FIG. 8 shows a stud 69 according to another embodiment. A plurality of recesses 69F that are recessed in the inner diameter direction are formed in the body portion 69D of the stud 69 in the circumferential direction, and a projection 51B that engages with the recess 69F is formed in the hole 51 of the lower member 22.
Are formed. Therefore, in this embodiment as well, the small-diameter male screw portion provided on the upper portion of the stud 69 has the same shape as shown in FIG.
When the nut 58 of FIG. 4 is screwed and tightened, the stud 69 will be stopped.

As described above, the relationship between the stud in which the nut is screwed into the small-diameter male screw portion and tightened and the hole in the lower member into which this stud is inserted can prevent rotation of the stud during screwing and tightening of the nut. Any relationship will do as long as it is one.

9 and 10 show an upper member 21 and a lower member 2.
7 shows a structure according to another embodiment for installing a stud between the two. Small-diameter projections 79A and 79B fitted into the holes 80 and 81 of the upper member 21 and the lower member 22 are formed at the upper and lower ends of the stud 79 according to this embodiment, and the holes 80 and 8 are formed.
The stud 79 is erected and connected to the upper member 21 and the lower member 22 by fitting the small-diameter projections 79A and 79B into 1 and performing projection welding.

After projection welding, as shown in FIG. 9, the rotary shaft 78 connected to the swing link member 47 of the driving force transmission mechanism 44 is inserted into the hole 79A of the stud 79, and as shown in FIG. Of the washer 56 to the tip of the rotary shaft 78 protruding from the C-ring 5 into the groove 78A
7 is engaged to prevent the rotary shaft 78 from falling off the stud 79. Then, the taper portion 78B of the rotary shaft 78
The taper hole 41B of the wiper arm 41 is engaged with the serration, and the nut 60 is screwed into the male screw portion 78C of the rotary shaft 78 to be tightened, whereby the wiper arm 41 is coupled to the rotary shaft 78.

Also according to this embodiment, the cowl top 20 composed of the upper member 21 and the lower member 22 can be reinforced by the stud 79, and the distance between the upper member 21 and the lower member 22 can be reliably maintained by the stud 79. The stud 79 can also be used as a bearing member for the rotating shaft 78.

FIG. 11 is a vertical sectional view of the cowl top 20 showing a wiper arm driving device 92 according to another embodiment. This wiper arm driving device 92 also has a motor 93.
And a driving force transmission mechanism 94 by a link mechanism for transmitting the rotational driving force of the motor 93 to the wiper arm 41. The basic structure of the driving force transmission mechanism 94 is the same as that of the driving force transmission mechanism 44 of the above-described embodiment. Specifically, the driving force transmission mechanism 94 is a base whose base end is coupled to the drive shaft 93A of the motor 93. A link member 95, a connecting link member 96 whose one end is rotatably connected to the tip of the base link member 95, and a swinging link member whose tip is rotatably connected to the other end of the connecting link member 96. 97 and a rotary shaft 98 coupled to the base end of the swing link member 97, and the wiper arm 41 is coupled to the rotary shaft 98. Since there are two wiper arms 41, two connecting link members 96, two swing link members 97, and two rotating shafts 98 are also provided.

In this embodiment, the motor 93 is exposed from the cowl top 20 and attached to the lower surface 22B of the lower member 22 with a screw, and the driving force transmission mechanism 94 is inside the box-shaped cowl top 20. It is stored in the space S of. When the motor 93 is attached to the lower surface portion 22B, the base link member 9 is previously attached to the drive shaft 93A.
5 are coupled to each other, and the drive shaft 93A and the base link member 95 are formed on the lower surface portion 22B in the opening 9
After being inserted from 9 into the space S, the motor 93 is attached to the lower surface 22B with screws.

12 to 16 show an operation for housing the driving force transmission mechanism 94 in the space S while assembling the driving force transmission mechanism 94 in the space S.

As shown in FIGS. 13 and 14, the rotary shaft 9
8 is a large-diameter flange portion 98A, a large-diameter shaft portion 98B, a link member engaging portion 98C, a groove 98D, a medium-diameter shaft portion 98E, a small-diameter shaft portion 98F, and a groove 98G in order from the bottom. It is composed of a tapered portion 98H and a male screw portion 98I. S in FIG.
As shown in FIG. 15 which is a sectional view taken along line 15-S15, the plane cross-sectional shape of the link member engaging portion 98C is substantially rectangular due to the chamfered portion 98J.

By the time the assembling work of the driving force transmitting mechanism 94 for connecting the rotating shaft 98 and the swinging link member 97 is started, FIG.
2, the bearing members 100 and 101 are attached to the upper member 21 and the lower member 22, and the upper member 21 and the lower member 2 are attached.
After inserting the swing link member 97 into the space S between the two, the large-diameter flange portion 98A abuts the bearing member 101 of the lower member 22 and the lower portion of the large-diameter shaft portion 98B receives the bearing as shown in FIG. The rotary shaft 98 is inserted through the cowl top 20 from below until the tip of the small diameter shaft portion 98F is inserted into the bearing member 100 of the upper member 21 of the member 101.
At the time of this insertion work, as shown in FIG. 15, the rotary shaft 98 is passed through the hole 97A of the swinging link member 97 formed in the same shape as the link member engaging portion 98C, and the link member engaging portion 98C is formed into the hole 97A. The rocking link member 97 and the rotary shaft 98 are coupled to each other by being inserted into and engaged with.

Then, as shown in FIG. 14, the rotating shaft 98
Engaging member 10 by C ring or E ring in groove 98D of
By engaging 2 with each other, the rocking link member 97 is positioned in the axial direction of the rotary shaft 98, and the bearing member 10
By fitting the washer 56 to the tip of the small diameter shaft portion 98F protruding upward from 0 and engaging the C ring 57 with the groove 98G, the rotary shaft 98 is prevented from slipping out of the cowl top 20, Then, the tapered hole 41B of the wiper arm 41 is engaged with the tapered portion 98H by serration, and the nut 60 is screwed into the male screw portion 98I to be tightened, whereby the wiper arm 41 is coupled to the rotary shaft 98.

The connecting work between the base link member 95 and the connecting link member 96 constituting the driving force transmission mechanism 94 and the connecting work between the connecting link member 96 and the swing link member 97 are performed in the space S. These connecting works are performed by the structure shown in FIG. 16, and FIG. 16 shows the case of the connecting link member 96 and the swing link member 97 as a representative example.

The connecting link member 96 is provided with a ball 103, and the swinging link member 97 is provided with a ball receiving portion 97B larger than the ball 103. Inside the ball receiving portion 97B, the ball 103 is provided on the ball 103 side. A ball holding member 104 made of hard synthetic resin and opened toward the side is arranged. The ball holding member 104 has a plurality of split grooves 104A.
When the ball 103 is strongly pressed against the ball holding member 104, the ball 103 enters the inside of the ball holding member 104 which is elastically expanded and deformed due to the split groove 104A being pushed open. After entering, the ball holding member 104 returns to the original contracted shape and holds the hole 103 slidably. As a result, the connection link member 96 and the swing link member 97 are connected to each other, and this connection is achieved by the ball 10
By sliding between the ball holding member 104 and the ball holding member 104, one of the connecting link member 96 and the swing link member 97 is rotatable with respect to the other.

In the embodiments shown in FIGS. 11 to 16, the rotary shaft 98 of the driving force transmission mechanism 94 is supported by the upper member 21 and the lower member 22 forming the box-shaped cowl top 20. Therefore, the upper member 21 and the lower member 22 are utilized as bearing members for the rotating shaft 98, and the stud 4 having a length extending over the upper member 21 and the lower member 22 shown in FIGS.
9, the upper member 21 and the lower member 22 shown in FIGS. 9 and 10.
It is possible to omit the stud 79 having a length that extends over the entire length.

Further, since the driving force transmission mechanism 94 is housed and arranged in the space S inside the box-shaped cowl top 20, the driving force transmission mechanism 94 can be protected by the cowl top 20.

Each of FIGS. 17 to 19 shows another embodiment of the assembly structure of the cowl top to the dashboard upper panel.

In the embodiment of FIG. 17, the pin 61 of FIGS. 6 and 7 is attached to the hanging portion 3A of the dashboard upper panel 3.
The pin receiving member 6 into which the pin 61 is press-fitted and inserted.
3 is provided on the cowl top 20.

The dashboard upper panel 113 of the embodiment of FIG. 18 is not provided with the same end portion as the hanging portion 3A of FIG. 17, but instead of this, the upper member 21 and the lower member 22 of the cowl top 20 are mounted on the vehicle. The rear flange portion 21D,
An inclined end portion 113A for mounting the 22D is provided. Therefore, in this embodiment, the flange portions 21D, 22D
Is placed on the inclined end 113A, and the inclined end 113A
Are connected with a bolt 114 and a nut 114A.

Although the dashboard upper panel 123 according to the embodiment of FIG. 19 is formed with the slanted end portion 123A, this dashboard upper panel 123 is different from the previous embodiments in that the downward extension portion 123B is formed.
Is provided. Therefore, the cowl top 120 in this embodiment is formed by joining the upper member 121 different from the previous embodiments and the same lower member 22 as in the previous embodiments, and the upper member 121 includes the lower member 22. Extension part 1 of dashboard upper panel 123 beyond
An extension portion 121A that reaches 23B is formed. The extension portion 121A is attached to the downward extension portion 123B by the bolt 65,
The flanges 121D and 22D on the vehicle rear side of the upper member 121 and the lower member 22 are mounted on the inclined end portion 123A while being coupled with the nut 65A, and the inclined end portion 123A is coupled with the bolt 114 and the nut 114A.

As described above, the assembly structure of the cowl top to the dashboard upper panel can be arbitrarily determined according to the shape of the dashboard upper panel and the like, and the shape of the cowl top can also be set to the dashboard upper panel. It can be arbitrarily determined according to the shape of the panel and the like.

[0081]

According to the present invention, it is possible to reduce the number of working steps required for vehicle production.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state when a cowl top according to an embodiment of the present invention is assembled to a vehicle body of a four-wheel vehicle.

FIG. 2 is a perspective view showing the cowl top of FIG. 1 before assembly.

FIG. 3 is a vertical cross-sectional view showing a stud on which a rotary shaft of a driving force transmission mechanism is inserted, which is being attached to a cowl top.

FIG. 4 is a vertical sectional view showing the stud of FIG. 3 after being attached to a cowl top.

5 is a sectional view taken along line S5-S5 of FIG.

FIG. 6 is a vertical cross-sectional view showing when the cowl top to which the windshield cleaning wiper device is attached is assembled to the dashboard upper panel of the vehicle body.

FIG. 7 is a vertical cross-sectional view showing the cowl top of FIG. 6 assembled to a dashboard upper panel.

FIG. 8 is a view similar to FIG. 5 showing a detent structure according to another embodiment of the stud.

FIG. 9 is a view showing a structure according to another embodiment for installing a stud between an upper member and a lower member of the cowl top, and is a vertical cross-sectional view showing a state before a wiper arm is coupled to a rotating shaft.

FIG. 10 is a vertical cross-sectional view showing a state after the wiper arm is coupled to the rotary shaft in the embodiment of FIG.

FIG. 11 is a vertical cross-sectional view of a cowl top showing a wiper arm driving device according to another embodiment.

FIG. 12 is a vertical cross-sectional view showing a first stage of a connecting operation of the swing link member and the rotary shaft of the wiper arm driving device according to the embodiment of FIG. 11.

FIG. 13 is a vertical cross-sectional view showing the next second step of FIG. 12.

FIG. 14 is a vertical cross-sectional view showing a third step next to FIG. 13.

15 is a cross-sectional view taken along the line S15-S15 of FIG.

16 is a diagram showing a structure for connecting the constituent members of the driving force transmission mechanism according to the embodiment of FIG. 11.

FIG. 17 is a vertical cross-sectional view showing another embodiment of the assembly structure of the cowl top to the dashboard upper panel.

FIG. 18 is a vertical sectional view showing still another embodiment of the assembly structure of the cowl top to the dashboard upper panel.

FIG. 19 is a vertical sectional view showing still another embodiment of the assembly structure of the cowl top to the dashboard upper panel.

[Explanation of symbols]

2 Windshield 3,113,123 Dashboard upper panel 20 forming a vehicle body Cowl top 21 Upper member 21C Upper surface 22 Lower member 22B Lower surface 40 Windshield cleaning wiper device 41 Windshield cleaning wiper arm 42,92 Wiper arm Drive device 43,93 Motor 44,94 Drive force transmission mechanism 48,78,98 Rotation shaft 49,78 Stud S Space part

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yutaka Miyamoto             2-14-8 Matsubara-cho, Akishima-shi, Tokyo Kikuchi             Press Industry Co., Ltd. F term (reference) 3D003 AA18 BB02 CA07 DA12                 3D025 AE03

Claims (10)

[Claims] 1. A windshield wiper arm for driving a windshield cleaning wiper arm in advance in a cowl top of a vehicle, which is disposed under a windshield of a vehicle and is assembled to a vehicle body of the vehicle, before being assembled to the vehicle body. A cowl top for a vehicle, which is equipped with a drive device. 2. The cowl top for a vehicle according to claim 1, wherein the cowl top for a vehicle is formed in a box shape having a space inside. 3. The cowl top for a vehicle according to claim 2, wherein at least a part of the wiper arm drive device is housed in the space. 4. The cowl top for a vehicle according to claim 2, wherein the wiper arm driving device transmits a motor and a rotational driving force of the motor to the windshield cleaning wiper arm. And the space portion is formed between the upper surface portion and the lower surface portion, and a stud is provided between the upper surface portion and the lower surface portion, and the driving force is provided inside the stud. A cowl top for a vehicle, wherein a rotating shaft, which is a component of the transmission mechanism, is rotatably inserted. 5. The cowl top for a vehicle according to claim 2, wherein the wiper arm drive device is a motor and a drive force transmission mechanism that transmits a rotational drive force of the motor to the windshield cleaning wiper arm. And the space portion is formed between the upper surface portion and the lower surface portion, and between the upper surface portion and the lower surface portion,
A cowl top for a vehicle, wherein a rotating shaft, which is a component of the driving force transmission mechanism, is rotatably installed. 6. The cowl top for a vehicle according to claim 4, wherein the upper surface portion is an upper member and the lower surface portion is a lower member, and the upper member and the lower member are joined together. A cowl top of a vehicle, characterized in that the space is the space. 7. The cowl top for a vehicle according to claim 6, wherein both the upper member and the lower member are made of a sheet metal press. 8. The cowl top for a vehicle according to claim 6, wherein both the upper member and the lower member are made of synthetic resin. 9. A windshield wiper arm drive device for driving a windshield cleaning wiper arm is attached to a cowl top, and then the cowl top is arranged at a lower portion of the windshield to be attached to the vehicle body of the vehicle. How to assemble the cowl top of the vehicle. 10. The method for assembling a cowl top for a vehicle according to claim 9, wherein the windshield cleaning wiper arm is coupled to the wiper arm driving device before the cowl top is assembled to the vehicle body. How to assemble the cowl top of the vehicle.