JPH0336449Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a structure for attaching a wiper device to a structure near a window glass, and in particular to a structure in which a wiper motor is installed in a frame and the frame is attached to the structure. For example, the present invention relates to improvements that can be effectively applied to wiper devices for automobiles.

[Conventional technology]

As a conventional wiper device mounting structure, for example,
There are those shown in FIGS. 5 and 6.

The mounting structure of the wiper device shown in FIG.
A frame 4 in which is formed in at least three places.
1. A wiper device 42 is installed on this frame 41, and the frames 41 are arranged facing each other in the vicinity of the window glass 44 in the partition wall 45 between the engine room and the living room, and the fastened seats 43 are fastened with bolts and nuts 46. By being fastened to the partition wall 45, the wiper device 4
2 can be attached to a predetermined position.

The mounting structure of the wiper device shown in FIG. 6 is formed in a substantially channel shape, and a frame 41A is appropriately formed with fastened seats 43A and 43B at a plurality of locations so as to be oriented vertically and horizontally. This frame 41A
A wiper motor 42A is installed on the frame 41A, and the frame 41A is arranged so that the fastened seats 43A and 43B face the partition wall 45A and the bracket 45B.
6 to the partition wall and the bracket, the wiper device 42A is attached to a predetermined position.

[Problem that the invention attempts to solve]

In the wiper device mounting structure shown in FIG. 5, the tightening force that fixes the frame 41 to the partition wall 45 acts only in the horizontal direction, so it is strong against forces acting in the horizontal direction, but Weak against forces acting in the direction.

In the wiper device mounting structure shown in FIG. 6, the overall fixing force is strong because the tightening is done in both horizontal and vertical directions so as to complement each other. However, since the vertical direction of the fastened seat 43A is parallel to the output shaft 42a of the wiper device 42A, there is a possibility that the fastened seat 43A may fall off from the tightening of the bolt/nut 46, as shown by the arrow. There is.

An object of the present invention is to provide a mounting structure for a wiper device that can securely fix the wiper device.

[Means for solving problems]

The mounting structure of the wiper device according to the present invention includes a rectangular plate-shaped frame 1 in which fastened seats 27A and 27B fastened by a fastening means are arranged at at least three locations, and an output shaft 3 of the frame 1. A wiper motor 2 installed so as to protrude from the installation surface 1c, a body 7 installed on the frame 1 at a position away from the wiper motor 2, and rotatably supported by the body 7,
A mounting structure for a wiper device including a wiper shaft 13 connected to the output shaft 3 via a link mechanism, wherein at least one pair of the fastened seats 27A and 27B is mounted on the frame 1. They are disposed at locations on both sides of a line passing through the output shaft 3 and the wiper shaft 13, and the fastened seats 27A, 27B are formed so that their seating surfaces are substantially perpendicular to each other. Further, the frame 1 is configured such that the direction of the output shaft 3 of the wiper motor 2 is in either direction of the fastened seat 27.
A, 27B are formed so as to be inclined in the direction of the seat surfaces, and the frame 1 is connected to the structure 3 near the window glass 31.
3, 34, each of the fastened seats 27A, 2
7B is fastened to a part of the structures 33 and 34 by fastening means, whereby the wiper device is attached near the window glass 31.

[Effect]

Since the pair of seats to be fastened are disposed substantially perpendicularly to each other, the fastening directions of the fastening means attached to them compensate for each other's weak points, so that overall fixation is improved.

In addition, since the direction of the output shaft of the wiper motor is arranged at an angle with respect to the direction of each of the fastened seats, the moving force of the frame against the structure due to the reaction caused by the drive of the output shaft is transferred to each of the fastened seats. Since it is possible to apply a force to the parts, it is possible to prevent the relative slippage of each fastened seat and the fastening means.

〔Example〕

Fig. 1 is a side sectional view showing the mounting structure of a wiper device according to an embodiment of the present invention, Fig. 2 is an enlarged partial sectional view taken along the - line in Fig. 4 is a sectional view taken along the - line in FIG. 3.

In this embodiment, the mounting structure of the wiper device includes a substantially rectangular plate-shaped frame 1 which is fixedly attached and arranged substantially in the center near the lower side (or upper side) of a window glass in an automobile.
A wiper motor 2 with a speed reduction mechanism is installed on one side (hereinafter referred to as the back side). The output shaft 3 of the wiper motor 2 passes through one side (hereinafter referred to as the right side) of the frame 1 at a substantially right angle to the front side, and one end of the crank 4 is fixed to the protrusion of the output shaft 3. There is. crank 4
One end of a rod 5 is rotatably connected to the free end of the lever, and the other end of the rod 5 is connected to a free end of a lever 6, which will be described later.

A body 7 for supporting a shaft, which will be described later, is installed on the left side of the front of the frame 1, and the body 7 is integrally formed by aluminum die casting. The body 7 includes a main body part 8 formed by vertically dividing a cylinder into two parts, and a semicircular annular flange 9 is provided at one end of the main body part 8 to protrude outward. Body 7 is this flange 9
is arranged on the frame 1 so as to avoid the range of reciprocating rotation of the lever 6, which will be described later, and is brought into contact with the bolt 10.
It is fixedly installed on the frame 1 by being fastened using.

A closing wall 11 is formed at the other end of the body 7, and a sleeve 12 formed in a substantially cylindrical shape is arranged on this wall 11 so that the center line of the body 7 substantially coincides with the center line. It is provided to protrude so as to penetrate the wall 11. A main shaft 13 as a wiper shaft is fitted into the sleeve 12, and a stop ring 14 is fitted to the front end of the sleeve 12 so as to be rotatably supported. One end of the lever 6 is fitted and fixed to the rear end of the main shaft 13, and the other end of the rod 5 is rotatably connected to the free end of the lever 6. ing. One end of a main arm 15 serving as a wiper arm is fixedly attached to the other end of the main shaft 13 via a knurled portion 13a and a threaded portion 13b.

A bracket 16 is provided on the body 7 so as to protrude as if it were an extension of the closing wall 11. The bracket 16 is formed into a generally rectangular plate shape and is disposed so as to straddle the lever 6 and the rod 5. A flange 17 is provided at the tip of the bracket 16 and protrudes toward the rear side, and female threads 18 are formed at both left and right ends of the flange 17, respectively. With the bracket 16 straddling the lever 6 and the rod 5, the flange 17 is brought into contact with the rising wall 1a on the upper side of the frame 1, and the bolt 19 is screwed into the female thread 18 from the opposite side of the rising wall 1a. Thus, it is fastened to the frame 1.
By this fastening, the body 7 is supported on both sides of the range of reciprocating rotation of the lever 6, so that it is firmly fixed to the frame 1.

A support hole 20 is provided at the base end of the bracket 16 integrally protruding from the body 7 and is located at an appropriate position to configure the pantograph mechanism. A knurled portion 21a formed at one end thereof is press-fitted so as to stand parallel to the main arm 15. A ball joint 21b is formed at the tip of the subshaft, and the base end of the subarm 22 is rotatably fitted into the joint 21b.

A link bar (not shown) is installed between the free ends of the main arm 15 and the sub arm 22 with both ends rotatably supported. and the body 7 supporting the sub-arm 22 constitute a pantograph mechanism. A wiper blade (not shown) is rotatably supported on the link bar.

In addition, in the figure, 25 is a grease leakage prevention cover that is placed on the main shaft 13, and 26 is a grease leakage prevention cover that is placed on the subshaft 21.

The rising wall 1a on the upper side of the frame 1 is raised so as to form an included angle of approximately 120 degrees with respect to the installation surface 1c of the body 7, and each fastened seat 27A is provided at both left and right ends of the rising wall 1a. are formed respectively. In addition, an overhanging wall 1b overhangs from the lower side of the frame 1 so as to form an included angle of about 120 degrees with respect to the installation surface 1c of the body 7. A fastened seat 27B is formed respectively.

Each fastened seat 27A, 27B has an oval notch 28 with one end open, which is punched and molded, and in the notch 28 there is a rubber bushing 29 formed into a thick cylindrical shape. It is fitted by inserting the edge of the notch 28 into an annular groove 29a cut in the center.
A collar 30 formed in an elongated cylindrical shape is fitted into the rubber bush 29, and the collar 30 is formed slightly lower than the height of the rubber bush 29.

On the other hand, the vehicle body to which this wiper device is attached has vertical brackets 33 each formed in a vertical cross-sectional shape as shown in FIG.
and a horizontal bracket 34 are disposed below the window glass 31 and fixedly protrude from the inner surface of the air scoop 32, respectively. A vertical wall portion 33a is formed on the vertical bracket 33, and a horizontal wall portion 34a is formed on the horizontal bracket 34.
Through holes 35 and 36 are provided in the horizontal wall portion 34a and the horizontal wall portion 34a, respectively, and are arranged to correspond to the respective notches 28.

The pantograph type wiper device according to the above configuration can be properly positioned at a specified position on the air scoop 32 in a predetermined posture by appropriately disposing and fastening the frame 1 to the vertical and horizontal brackets 33 and 34 according to the above configuration. can be attached to.

That is, the power graph type wiper device is carried between both brackets 33 and 34 formed on the automobile. At this time, the respective fastened seats 27A and 27B formed on the rising wall 1a and the overhanging wall 1b of the upper and lower parts of the frame 1 respectively face the vertical wall portion 33a and the horizontal wall portion 34a of both the brackets 33 and 34. With,
The cutout portions 28 of these seats 27A, 27B are aligned with the through holes 35, 36 of these wall portions 33a, 34a, respectively.

Next, bolt nut 37 is attached to rubber button 29.
collar 30 and bracket through holes 35, 36
The fastened seats 27A, 27B are connected to both the brackets 33, 34 by being inserted into the brackets 33, 34 and screwing the nuts 38 together. With this combination,
The frame 1 of the pantograph wiper device is fixedly attached to both brackets 33, 34.

In this installed state, the upper and lower fastened seats 27
A, 27B are each inclined at an included angle of approximately 120 degrees with respect to the installation surface 1c of the frame 1, so that the output shaft 3 of the wiper motor 2, the main shaft 13, and the subshaft 21 are attached to the vertical wall portion 3.
3a and the horizontal wall 34a at an angle of approximately 30 degrees. The main shaft 13 and the subshaft 21 are connected to an air scoop 32.
The main arm 15 and the sub-arm 22 are respectively attached to the projecting ends.

Next, the action will be explained.

When the output shaft 3 is rotated at a reduced speed by the wiper motor 2, the main shaft 13 is reciprocated via the crank 4, rod 5, and lever 6. This reciprocating rotation drives the main arm 15 fixed to the main shaft 13, so that the wiper blade 24 reciprocates. At this time, since the sub-arm 22, which together with the main arm 15 constitutes the pantograph mechanism, follows the main arm 15, the link bar installed between the two arms 22 and 15 swings regularly. As a result, the wiper blade attached to the link bar performs a very good wiping action during reciprocating motion.

Generally, pantograph wiper devices are often used when the wiping area of each wiper blade is wide. In such a case, the wiping resistance acting on the wiper blade increases, so the driving force for wiping the wiper blade also increases. As a result, for example, if the wiper blade is locked while the wiper motor is being driven, there is a force between the frame and the bracket that substantially installs the wiper motor on the vehicle body that tries to move the frame relative to the bracket. will have a strong effect.

This force to move the frame 1 is due to the structure of the wiper device that uses the link mechanism.
It works as follows. For example, if the wiper blade is locked while the wiper motor 2 is being driven, the rotational driving force of the wiper motor 2 acts on the frame 1 to rotate it in a direction horizontal to the output shaft 3 of the wiper 2. . At the same time, a tensile or compressive force acts on the crank 4 and the rod 5, but since the crank 4 and the rod 5 are offset from the installation surface 1c of the frame 1, the tensile or compressive force acts on the frame 1. This will act as a force to deflect it in its longitudinal direction. This acting force is in a direction parallel to the output shaft 3 and becomes maximum when the wiper blade is locked near the reversal position.

In this embodiment, the respective fastened seats 27A and 27B are disposed so as to face at right angles to each other, and are also inclined with respect to the direction of the output shaft 3, so that the fastened seats 27A and 27B act on the frame 1. The force is applied to each fastened seat 27A,
At 27B, a component force in a direction perpendicular to the seating surface of each seat 27A, 27B is applied. In other words,
The force that attempts to move the frame 1 always acts as a small force that is dispersed in each fastened seat 27A, 27B. Therefore, the situation in which the notch 28 comes off from the rubber bush 29 and falls off from the connection between the bolt 37 and the nut 38 is prevented. Further, since only a horizontal force does not act greatly on the surface of each fastened seat 27A, 27B, the notch 28 does not break the rubber bush 29 and eliminate the floating effect, thereby increasing noise. The wiper device does not rattle.

On the other hand, as shown in Figure 6,
The vertical fastened seat 43A is the wiper motor 42A.
If the output shaft 42a is parallel to the output shaft 42a, the tensile load and compressive load of the link and rod will act on the frame 41A in a direction parallel to the output shaft 42, so that the fastened seat 43A There is a risk that the rubber bushing 46 may fall off from the fastening, and the rubber bushing of the seat 43A to be fastened may break due to long-term use.

It goes without saying that the present invention is not limited to the embodiments described above, and that various changes can be made without departing from the gist thereof.

For example, the fastened seats are not limited to five locations, but at least one location on both sides of the line passing through the output shaft of the wiper motor and the wiper shaft, and one additional location on either side, for a total of three locations.
Just place it at the location. However, the seating surfaces of the fastened seats placed on both sides of the line passing through the output shaft of the motor and the wiper shaft must be formed so as to be substantially perpendicular to each other.

In the above embodiment, the case where the present invention is applied to the mounting structure of a pantograph type wiper device has been explained, but the present invention is not limited to this, but can also be applied to the mounting of a normal wiper device without a sub-arm. Excellent effects can be obtained when the driving force is large.

[Effect of idea]

The fastened seats disposed on both sides of a line passing through the output shaft of the wiper motor and the wiper shaft are formed so that their seating surfaces are substantially perpendicular to each other, and the direction of the output shaft of the wiper motor and the direction of the fastened seats are By setting these so that they intersect, each fastened seat always receives the moving force acting on the frame in a shared manner, so that the wiper device can be reliably fixed to the vehicle body. In addition, by securely fixing the wiper device, the mounting state of the wiper device can be maintained constant, thereby preventing fluctuations in wiping conditions and wobbling of the device due to changes in the mounting state. This allows the desired wiping effect to be exerted over a long period of time.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing the mounting structure of a wiper device according to an embodiment of the present invention, Fig. 2 is an enlarged partial sectional view taken along the - line in Fig. 4 is a sectional view taken along the - line in FIG. 3. FIGS. 5 and 6 are side sectional views showing conventional examples, respectively. 1...Frame, 1a...Rising wall, 1b
... Overhanging wall, 1c ... Installation surface, 2 ... Wiper motor, 3 ... Output shaft, 4 ... Crank, 5 ...
Rod, 6... Lever, 7... Body, 8... Main body, 9... Flange, 10... Bolt, 11...
...Closing wall, 12...Sleeve, 13...Main shaft (wiper shaft), 13a...Knurled portion, 13b...Threaded portion, 14...Stopper ring, 15...Main arm, 16...Bracket, 17...Flange , 18...female thread, 19...
... Bolt, 20 ... Support hole, 21 ... Subshaft, 21a ... Knurling part, 21b ... Joint part, 22 ... Sub arm, 25, 26 ... Grease leakage prevention cover, 27A, 27B ... Fastened seat, 28... Notch, 29... Rubber button,
29a... Annular groove, 30... Collar, 31... Window glass, 32... Air scoop, 33... Vertical bracket (structure), 33a... Vertical wall portion, 34...
...Horizontal bracket (structure), 34a...Horizontal wall part,
35, 36...through hole, 37...bolt (fastening means), 38...nut.

Claims (1)

[Scope of claim for utility model registration] Fastened seat 27A, 2 fastened by fastening means
A rectangular plate-shaped frame 1 in which 7Bs are arranged at at least three locations, a wiper motor 2 installed on the frame 1 with its output shaft 3 protruding from the installation surface 1c, and the frame 1.
A wiper device comprising a body 7 installed at a position apart from a wiper motor 2, and a wiper shaft 13 rotatably supported by the body 7 and connected to the output shaft 3 via a link mechanism. In the mounting structure, at least one pair of the fastened seats 27A and 27B are respectively disposed at positions on both sides of a line passing through the output shaft 3 and the wiper shaft 13 in the frame 1. In addition, the two fastened seats 27A and 27B are formed so that their seating surfaces are substantially perpendicular to each other, and the frame 1 is arranged such that the direction of the output shaft 3 of the wiper motor 2 is in which direction the seats 27A and 27B are fastened. Fastening seat 27
A, 27B are formed so as to be inclined in the direction of the seat surfaces, and the frame 1 is connected to the structure 3 near the window glass 31.
3, 34, each of the fastened seats 27A, 2
7B is fastened to a part of the structures 33, 34 by fastening means, whereby the wiper device is mounted near the window glass 31.