JP6921659B2 - Wiper device and its manufacturing method - Google Patents

Description

The present invention relates to a support device provided between a drive device and a fixed object and suppressing vibration transmission between the drive device and the fixed object.

Conventionally, a wiper device (driving device) mounted on a vehicle such as an automobile is fixed to a vehicle body (fixed object) by a bolt (fixing member) via an annular elastic member (support device). That is, the support device is arranged between the drive device and the fixed object, and the transmission of vibration between the two is suppressed. Patent Document 1 describes an example of a drive device fixed to an object to be fixed via a support device in this way.

The support device described in Patent Document 1 includes a tubular portion provided inside in the radial direction, and a pair of load receiving portions protruding radially outward on both axial sides of the tubular portion. The tubular portion and the load receiving portion are integrally molded with each other by injection molding or the like of an elastic material such as natural rubber.

Here, the function of the support device includes the function of suppressing the transmission of vibration between the drive device and the object to be fixed, and when applied to the wiper device, the wiping range of the wiper member is within a specified range. There is a function to make it swing accurately. The former function is particularly determined by the rigidity of the support device in the vertical direction (axial direction), and the latter function is particularly determined by the rigidity of the support device in the lateral direction (diameter direction).

Therefore, in order to tune the performance of the support device, the vertical rigidity and the horizontal rigidity of the support device may be changed according to the required specifications.

Japanese Unexamined Patent Publication No. 2017-067150

However, in the support device described in Patent Document 1 described above, a pair of load receiving portions that determine the rigidity in the vertical direction and a tubular portion that determines the rigidity in the horizontal direction are integrally molded with the same elastic material. Therefore, the following problems can occur.

For example, in order to meet the needs of increasing the rigidity in the horizontal direction and weakening the rigidity in the vertical direction, since the mounting space of the tubular part that determines the rigidity in the horizontal direction is narrow, first select an elastic material with a large elastic modulus. do. Then, in order to weaken the rigidity of the load receiving portion that determines the rigidity in the vertical direction, the wall thickness is reduced, the shape is made complicated, and the tuning is performed. Therefore, the decrease in durability of the load receiving portion becomes a problem.

Further, since the support device is manufactured by abutting a pair of molds, if the shape of the support device is complicated, there may be a problem that it is difficult to release the support device from the mold at the time of manufacturing. Further, it is necessary to perform deburring work to remove minute waste meat (burrs) leaked between the pair of molds, which causes a decrease in productivity.

An object of the present invention provides a no longitudinal and lateral rigidity can easily be tuned, and that can improve the productivity of follower Ipa device and its manufacturing method of lowering the durability There is.

In the wiper device of the present invention, a wiper member that wipes the wiping surface, a wiper motor that swings the wiper member, a fixed leg that is provided on the wiper motor and is fixed to a fixed object, and a fixed leg that is attached to the fixed leg. A wiper device including a support device provided between the fixed leg and the fixed object and a fixing member for fixing the fixed leg to the fixed object, and the support device has a tubular shape. It has one first support portion which is an elastic body and two second support portions which are annular elastic bodies, and the first support portion and the second support portion have no step in the axial direction thereof. a hollow extrusion having an inner and outer circumferential surfaces, before Symbol outer peripheral surface of the axially opposite sides of the first support portion, the inner peripheral surface of the second support portion is mounted, respectively, the fixed the first support portion in the mounting hole of the leg and is mounted, said fixed leg is disposed between the second support portion first along the axial direction of the support portion, the said first support portion fixing member is inserted, the first support portion, abuts with the fixed leg in the radial direction, the second support portion, the fixed leg abuts in the axial direction, the first support portion , The rigidity is higher than that of the second support portion .

In another aspect of the present invention, a wiper member that wipes the wiping surface, a pivot shaft that swings the wiper member, a link mechanism that swings the pivot shaft, a wiper motor that drives the link mechanism, and the pivot. A frame member that unitizes the shaft, the link mechanism, and the wiper motor, a fixed leg that is provided on the frame member and fixed to the fixed object, and the fixed leg and the fixed object that are attached to the fixed leg. A wiper device including a support device provided between the two, and a fixing member for fixing the fixing leg to the fixing object, wherein the support device is one first support which is a tubular elastic body. The first support portion and the second support portion include a portion and two second support portions which are annular elastic bodies, and the first support portion and the second support portion are provided with an inner peripheral surface and an outer peripheral surface having no step in the axial direction thereof. a hollow extrusion, before Symbol outer peripheral surface of the axially opposite sides of the first support portion, the inner peripheral surface of the second support portion is mounted, respectively, the first support in the mounting hole of the fixed leg parts is mounted, said fixed leg is disposed between the second support portion first along the axial direction of the support portion, and said fixing member is inserted into the first support portion, wherein The first support portion abuts on the fixed leg in its radial direction, the second support portion abuts on the fixed leg in its axial direction, and the first support portion is more rigid than the second support portion. Is high .

In another aspect of the present invention, the first support portion and the second support portion are made of elastic materials having different elastic coefficients.

In another aspect of the present invention, the diameter dimension of the second support portion in contact with the fixing object is larger than the diameter dimension of the other second support portion.

In the method for manufacturing a wiper device of the present invention, a wiper member that wipes the wiping surface, a wiper motor that swings the wiper member, a fixed leg provided on the wiper motor and fixed to an object to be fixed, and the fixed leg A method for manufacturing a wiper device including a support device that is mounted and provided between the fixed leg and the fixed object, and a fixing member that fixes the fixed leg to the fixed object. The device has one first support portion which is a tubular elastic body and two second support portions which are an annular elastic body, and the first support portion and the second support portion are the same. It is a hollow extruded product having an inner peripheral surface and an outer peripheral surface having no step in the axial direction, and the first support portion has higher rigidity than the second support portion, and the first support portion has a mounting hole of the fixed leg. mounted by inserting the first support part, the first support portion, a first support portion attachment step of Ru is contacted with the fixed leg in the radial direction, the inner peripheral surface of the second supporting portion, said first The fixing legs are fixed to the outer peripheral surface of the support portion by press fitting, the fixing legs are arranged between the second support portions along the axial direction of the first support portion , and the second support portion is fixed in the axial direction. a second support assembly mounting step of Ru abut the leg, the first support portion, by inserting the fixing member from the axial direction, the fixed leg fixation step for fixing the fixing leg to the fixed object, Has.

In another aspect of the present invention, a wiper member that wipes the wiping surface, a pivot shaft that swings the wiper member, a link mechanism that swings the pivot shaft, a wiper motor that drives the link mechanism, and the pivot. A frame member that unitizes the shaft, the link mechanism, and the wiper motor, a fixed leg that is provided on the frame member and fixed to the fixed object, and the fixed leg and the fixed object that are attached to the fixed leg. A method for manufacturing a wiper device including a support device provided between the two, and a fixing member for fixing the fixing leg to the fixing object, wherein the support device is one tubular elastic body. It has a first support portion and two second support portions which are annular elastic bodies, and the first support portion and the second support portion have an inner peripheral surface and an outer peripheral surface having no step in the axial direction thereof. The first support portion has a higher rigidity than the second support portion, and the first support portion is inserted into the mounting hole of the fixed leg and mounted, and the first support portion is mounted . the support portion, a first support portion attachment step of Ru is contacted with the fixed leg in the radial direction, the inner peripheral surface of the second support section, is fixed by press-fitting to the outer peripheral surface of the first support portion, wherein between the second support portion along the axial direction of the first support portion, the fixed leg is disposed, said second support portion, the second support assembly mounting step of Ru is contacted with the fixed leg in the axial direction A fixed leg fixing step of inserting the fixing member from the axial direction into the first support portion and fixing the fixing leg to the fixing object.

In another aspect of the present invention, in the pre-stage of the first support portion mounting step, the inner peripheral surface of one of the second support portions is preliminarily press-fitted into the outer peripheral surface of the first support portion on one side in the axial direction. Keep it fixed.

In another aspect of the present invention, a wiper member that wipes the wiping surface, a wiper motor that swings the wiper member, a fixed leg that is provided on the wiper motor and fixed to a fixed object, and a fixed leg that is attached to the fixed leg. A method for manufacturing a wiper device including a support device provided between the fixed leg and the fixed object and a fixing member for fixing the fixed leg to the fixed object. It has one first support portion which is a tubular elastic body and two second support portions which are an annular elastic body, and the first support portion and the second support portion are in the axial direction thereof. It is a hollow extruded product having an inner peripheral surface and an outer peripheral surface having no steps, and the first support portion has higher rigidity than the second support portion , and the outer circumferences on both sides of the first support portion in the axial direction. A support device assembly process in which the inner peripheral surfaces of the second support portion are fixed to the surface by press fitting, and the first support portion is press-fitted into the mounting holes of the fixing legs from the notches provided in the mounting holes. It mounted to, the first support portion, is brought into contact with the fixed leg in the radial direction, and the second supporting portion, and the press-mounting step of Ru is contacted with the fixed leg in the axial direction, the first The support portion has a fixing leg fixing step of inserting the fixing member from the axial direction and fixing the fixing leg to the fixing object.

In another aspect of the present invention, a wiper member that wipes the wiping surface, a pivot shaft that swings the wiper member, a link mechanism that swings the pivot shaft, a wiper motor that drives the link mechanism, and the pivot. A frame member that unitizes the shaft, the link mechanism, and the wiper motor, a fixed leg that is provided on the frame member and fixed to the fixed object, and the fixed leg and the fixed object that are attached to the fixed leg. A method for manufacturing a wiper device including a support device provided between the two, and a fixing member for fixing the fixing leg to the fixing object, wherein the support device is one tubular elastic body. It has a first support portion and two second support portions which are annular elastic bodies, and the first support portion and the second support portion have an inner peripheral surface and an outer peripheral surface having no step in the axial direction thereof. The first support portion has a higher rigidity than the second support portion, and the outer peripheral surfaces of the first support portion on both sides in the axial direction are inside the second support portion. In the support device assembly process in which the peripheral surfaces are fixed by press fitting, and the first support portion is press-fitted into the mounting hole of the fixing leg from the notch provided in the mounting hole, and the first support portion is mounted. in the radial direction is brought into contact with the fixed leg and the second supporting portion, and the press-mounting step of Ru is contacted with the fixed leg in the axial direction, the first support portion, the fixed from the axial direction It has a fixing leg fixing step of inserting a member and fixing the fixing leg to the fixing object.

According to the present invention, the support device is formed of a first support portion that is elastically deformed by receiving a load from one direction and a second support portion that is elastically deformed by receiving a load from another direction that intersects one direction. Then, the first support portion and the second support portion were made into hollow extruded products having an inner peripheral surface and an outer peripheral surface having no steps in the axial direction thereof.

As a result, the rigidity of the first support portion and the rigidity of the second support portion can be individually tuned, and thus the tuning of the entire support device can be simplified. Further, since the first support portion and the second support portion can be used as extruded products and their shapes can be simplified, the productivity can be improved without lowering the durability.

It is a schematic diagram which shows the vehicle equipped with the wiper device. It is a perspective view which shows the wiper motor of FIG. 1 alone. It is a perspective view which shows the fixed leg of a wiper motor enlarged. It is a perspective view which shows the mount rubber alone. It is sectional drawing (with fastening member) along the line AA of FIG. It is explanatory drawing explaining the manufacturing procedure of a tubular member and an annular member. It is explanatory drawing explaining the assembly procedure of a mount rubber. (A), (b), (c), (d), and (e) are perspective views showing a modified example of the mount rubber. It is explanatory drawing explaining the attachment procedure (1) to the fixed leg of a mount rubber. It is explanatory drawing explaining the attachment procedure (2) to the fixed leg of a mount rubber. It is explanatory drawing explaining the attachment procedure (3) to the fixed leg of a mount rubber. It is a perspective view which shows the example which applied the mount rubber to the fixed leg of the frame member which forms a wiper device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic view showing a vehicle equipped with a wiper device, FIG. 2 is a perspective view showing a single wiper motor of FIG. 1, FIG. 3 is a perspective view showing an enlarged fixed leg of the wiper motor, and FIG. 4 is a mount. A perspective view showing the rubber as a single unit, FIG. 5 is a cross-sectional view (with a fastening member) along the line AA of FIG. 2, and FIG. 6 is an explanatory view explaining a manufacturing procedure of the tubular member and the annular member. 7 is an explanatory view for explaining the assembly procedure of the mount rubber, FIGS. 8 (a), 8 (b), (c), (d), and (e) are perspective views showing a modified example of the mount rubber, and FIG. 9 is a perspective view showing a modified example of the mount rubber. An explanatory view explaining the mounting procedure (1) of the mount rubber to the fixed leg, FIG. 10 is an explanatory view explaining the mounting procedure (2) of the mount rubber to the fixed leg, and FIG. 11 is an explanatory view explaining the mounting procedure (2) of the mount rubber to the fixed leg of the mount rubber. FIG. 12 shows an explanatory view for explaining the mounting procedure (3) of the above, and FIG. 12 shows a perspective view showing an example in which a mount rubber is applied to the fixed legs of the frame member forming the wiper device.

As shown in FIG. 1, a windshield (wiping surface) 11 is provided on the front side of a vehicle 10 such as an automobile. A first wiper member 12 and a second wiper member 13 for wiping rainwater, dust, and the like adhering to the windshield 11 are provided on the windshield 11.

The first wiper member 12 is provided so as to correspond to the driver's seat side, and includes a first wiper blade 12a and a first wiper arm 12b. The first wiper blade 12a is rotatably attached to the tip of the first wiper arm 12b. On the other hand, the second wiper member 13 is provided so as to correspond to the passenger seat side, and includes a second wiper blade 13a and a second wiper arm 13b. The second wiper blade 13a is rotatably attached to the tip of the second wiper arm 13b.

The first and second wiper blades 12a and 13a have the same first and second wiping ranges 11a and 11b formed between the lower inverted position LRP and the upper inverted position URP on the windshield 11, respectively. It is designed to wipe back and forth in the direction. That is, the wiping patterns of the first and second wiper blades 12a and 13a are tandem type.

The base ends of the first and second wiper arms 12b and 13b are fixed to the tips of the first and second pivot shafts 14a and 14b rotatably provided on the vehicle 10 by fixing nuts (not shown). ing. As a result, the first and second wiper arms 12b and 13b are oscillated according to the oscillating motion of the first and second pivot shafts 14a and 14b.

Further, one end portions of the first and second drive levers 15a and 15b made of a steel plate or the like are fixed to the base end portions of the first and second pivot shafts 14a and 14b. Further, the other ends of the first and second drive levers 15a and 15b are connected to both ends of the connecting rod 16 made of a steel pipe or the like via a ball joint BJ, respectively.

The first and second wiper members 12 and 13 are oscillated by the wiper motor (driving device) 20. The wiper motor 20 is mounted near the central portion of the vehicle 10 along the vehicle width direction (left-right direction in the drawing), and one end of a crank arm 17 made of a steel plate or the like is fixed to the tip of the output shaft 24. .. Both ends of the drive rod 18 made of a steel pipe or the like are connected to the tip of the crank arm 17 and the other end of the second drive lever 15b via a ball joint BJ.

Here, the first and second wiper members 12 and 13, the first and second pivot shafts 14a and 14b, the first and second drive levers 15a and 15b, the connecting rod 16, the wiper motor 20, and the crank arm. 17, the drive rod 18, and the plurality of ball joints BJ constitute the wiper device according to the present invention.

Further, the crank arm 17, the drive rod 18, the connecting rod 16, and the first and second drive levers 15a and 15b convert the rotational motion of the output shaft 24 into the swing motion of the first and second pivot shafts 14a and 14b. The link mechanism is configured. That is, when the wiper motor 20 is driven to rotate the output shaft 24 in one direction, the first and second pivot shafts 14a and 14b are swung in a predetermined angle range by the link mechanism.

Therefore, the rotational drive of the wiper motor 20 causes the first and second wiper blades 12a and 13a to swing, and thus the first and second wiping ranges 11a and 11b on the windshield 11 are wiped cleanly.

However, the rotation direction of the output shaft 24 of the wiper motor 20 may be switched in the forward and reverse directions at a predetermined timing by a controller (not shown). As a result, the crank arm 17 is swung in a predetermined angle range, and the first and second wiper members 12 and 13 are also swung in a predetermined angle range accordingly. As described above, the merit of controlling the rotation direction of the output shaft 24 in the forward and reverse directions by the controller is that, for example, the size of the wiping range of the first and second wiper blades 12a and 13a can be arbitrarily set. Can be mentioned.

As shown in FIG. 2, the wiper motor 20 includes a housing 21 formed into a predetermined shape by injection molding a molten aluminum material or the like. The housing 21 includes a motor accommodating portion 22 and a gear accommodating portion 23. The opening of the motor accommodating portion 22 (left side in the figure) is sealed by the resin motor cover MC, and the opening of the gear accommodating portion 23 (lower side in the figure) is sealed by the resin gear cover GC. There is.

A brushless motor (not shown) having a rotating shaft is housed inside the motor housing part 22, and a reduction mechanism (not shown) including a worm and a worm wheel is housed inside the gear housing part 23. ing. Then, the rotation speed of the rotating shaft is decelerated by the reduction mechanism to increase the torque, and the increased torque rotational force is output from the output shaft 24 to the outside (link mechanism). As described above, the reduction mechanism of the wiper motor 20 employs a worm reducer that is compact and can obtain a large reduction ratio.

Here, the base end portion of the output shaft 24 is arranged inside the gear accommodating portion 23 and is fixed to the rotation center of the worm wheel. On the other hand, the tip end portion of the output shaft 24 is exposed to the outside of the gear accommodating portion 23 via the boss portion 23a formed in the gear accommodating portion 23. That is, the boss portion 23a rotatably supports the output shaft 24.

A control board (not shown) that functions as a controller is mounted inside the gear cover GC. Further, a connector connecting portion CN is integrally provided on the motor cover MC side of the gear cover GC. An external connector (not shown) on the vehicle 10 side is electrically connected to the connector connection portion CN, and an in-vehicle controller, an operation switch, or the like (not shown) is electrically connected to the external connector. As a result, the drive current is supplied to the brushless motor via the control board by turning on the operation switch.

Three fixed legs 25 are integrally provided around the gear accommodating portion 23 forming the housing 21. These fixed legs 25 project radially outward from the output shaft 24 (boss portion 23a), and two of the three fixed legs 25 are mutually centered on the output shaft 24. They are arranged facing each other (arranged at 180 degree intervals). On the other hand, the other fixed leg 25 of the three fixed legs 25 is arranged to face the motor accommodating portion 22 with the output shaft 24 at the center.

The three fixed legs 25 are each formed to have the same shape. Specifically, as shown in FIG. 3, a mounting hole 25a is formed in the fixed leg 25, and a mount rubber 40 (see FIG. 2) is mounted in the mounting hole 25a.

Here, the mounting hole 25a is a hole having a circular cross section penetrating in the thickness direction of the fixed leg 25 (axial direction of the output shaft 24), and no notch or the like is provided around the mounting hole 25a. That is, the mounting hole 25a has a simple circular shape and can be easily formed when the housing 21 is molded. Here, the mount rubber 40 is mounted in the mounting hole 25a from the axial direction thereof, and the procedure for mounting the mount rubber 40 in the mounting hole 25a will be described in detail later.

The wiper motor 20 is fixed to the vehicle 10 via three mount rubbers 40 mounted in the mounting holes 25a of the three fixed legs 25, respectively. That is, the wiper motor 20 is supported at three points and is stably supported by the vehicle 10. Specifically, as shown in FIG. 5, the three fixed legs 25 (wiper motor 20) are in a floating state with respect to the vehicle body (fixed object) 10a of the vehicle 10 via the mount rubber 40, respectively. As described above, it is fixed by the fixing member 30. As a result, the mount rubber 40 is provided between each fixed leg 25 of the wiper motor 20 and the vehicle body body 10a, and each fixed leg 25 of the wiper motor 20 is elastically supported by the mount rubber 40.

The fixing member 30 constitutes a part of the wiper device in the present invention, and includes a bolt 31 and a nut 32, and a collar member 33 that regulates the amount of screwing of the bolt 31 into the nut 32. Further, the head portion 31a of the bolt 31 is integrally provided with a flange portion 31b formed in a substantially disk shape. The diameter dimension D1 of the flange portion 31b is set to a diameter dimension larger than the diameter dimension D2 of the mount rubber 40 (D1> D2). As a result, when the fixing member 30 is viewed from the upper side in the axial direction (upper side in the drawing), the mount rubber 40 is hidden by the collar portion 31b.

Further, the flange portion 31b faces the vehicle body body 10a from the axial direction of the fixing member 30, and holds the mount rubber 40 together with the vehicle body body 10a so as to sandwich the mount rubber 40 from the axial direction. The collar portion 31b does not have to be integrally provided with the head portion 31a. For example, instead of the collar portion 31b, a disk-shaped flat washer separate from the head portion 31a may be used.

Here, the nut 32 screwed to the bolt 31 is preliminarily fixed to the inner side surface (back surface) of the vehicle body body 10a by a fixing means such as welding. As a result, when the wiper motor 20 is mounted on the vehicle 10, the bolt 31 can be easily screwed to the nut 32. Therefore, the ease of assembling the wiper motor 20 to the vehicle 10 is improved.

The color member 33 is formed in a tubular shape by bending a steel plate or the like. The collar member 33 regulates the amount of screwing of the bolt 31 into the nut 32, and has a function of eliminating excessive screwing or insufficient screwing of the bolt 31 into the nut 32. As a result, the mount rubber 40 can exhibit the vibration isolation performance as designed.

As shown in FIGS. 4 and 5, the mount rubber 40 constitutes the support device according to the present invention, and includes one tubular member (first support portion) 41 and two annular members (second support portion). ) 42 and. Here, in FIG. 4, in order to make it easy to distinguish between the tubular member 41 and the annular member 42, the tubular member 41 is shaded in dark color and the annular member 42 is shaded in light color. ing.

The tubular member 41 is provided inside the mount rubber 40 in the radial direction, and is formed into a tubular shape having a predetermined length by extruding an elastic material (elastic body) such as natural rubber. As described above, since the tubular member 41 is an extruded product, it is a hollow component having a simple shape and having an inner peripheral surface 41a and an outer peripheral surface 41b having no step in the axial direction. Further, as shown in FIG. 5, a bolt 31 constituting the fixing member 30 is inserted into the tubular member 41.

The annular member 42 is provided on both sides of the mount rubber 40 in the axial direction and on the outer side in the radial direction, and is formed into an annular shape having a predetermined length by extruding an elastic material (elastic body) such as natural rubber. There is. As described above, since the annular member 42 is an extruded product, it is a hollow component having a simple shape and having an inner peripheral surface 42a and an outer peripheral surface 42b having no step in the axial direction.

Here, the length dimension L1 along the axial direction of the tubular member 41 is substantially three times as long as the length dimension L2 along the axial direction of the annular member 42. Therefore, in the present embodiment, the member of reference numeral 41 having a longer axial length is referred to as a "cylindrical member", and the member of reference numeral 42 having a shorter axial length is referred to as an "annular member". There is.

Further, the elastic modulus E1 of the elastic material of the tubular member 41 is set to be larger than the elastic modulus E2 of the elastic material of the annular member 42 (E1> E2). That is, the tubular member 41 is made of an elastic material that is harder than the annular member 42.

A collar member 33 is mounted on the inside of the tubular member 41 in the radial direction so as to come into contact with the inner peripheral surface 41a. That is, the tubular member 41 (mount rubber 40) is centered by the collar member 33. The first annular surface 41c on one side (upper side in the drawing) of the tubular member 41 in the axial direction is in contact with the nut 32 side of the flange portion 31b. On the other hand, the second annular surface 41d on the other side (lower side in the drawing) of the tubular member 41 in the axial direction is in contact with the outer surface (surface) of the vehicle body body 10a.

The length dimension L1 along the axial direction of the tubular member 41 is set to be slightly longer than the length dimension along the axial direction of the collar member 33. As a result, the tubular member 41 does not rattle in the axial direction under the state where the fixing member 30 is tightened.

Further, on the radial outer side of the tubular member 41, two annular members 42 and mounting holes 25a of the fixing legs 25 are mounted so as to be in contact with the outer peripheral surface 41b. Specifically, the two annular members 42 are arranged on both sides in the axial direction of the tubular member 41, and the fixed legs 25 are arranged in the central portion in the axial direction of the tubular member 41. In other words, the fixed legs 25 are arranged between the annular members 42 along the axial direction of the tubular member 41.

That is, the tubular member 41 is elastically deformed by receiving a load (load from one direction) from the lateral direction (left-right direction in the figure) transmitted from the wiper motor 20 (fixed leg 25). In other words, the tubular member 41 has a function for accurately swinging the first and second wiper members 12 and 13 (see FIG. 1) in the first and second wiping ranges 11a and 11b (see FIG. 1). It has. The higher the rigidity of the tubular member 41, the more accurately the first and second wiper members 12 and 13 can be swung in the first and second wiping ranges 11a and 11b.

The inner peripheral surfaces 42a of the two annular members 42 are fixed to the outer peripheral surfaces 41b on both sides in the axial direction of the tubular member 41 by press fitting without using an adhesive or the like. Here, the two annular members 42 are fixed to the tubular member 41 only by press-fitting, but this is independent of the tubular member 41 when the wiper motor 20 vibrates in the vertical direction with respect to the vehicle body body 10a. This is because only the two annular members 42 are elastically deformed. This simplifies the assembly process of the mount rubber 40 and facilitates the tuning of the mount rubber 40.

Of the two annular members 42, the annular member 42 provided on one side in the axial direction (upper side in the drawing) of the mount rubber 40 has the first annular surface 42c on the one side in the axial direction on the nut 32 side of the flange portion 31b. The second annular surface 42d on the other side in the axial direction is in contact with the first surface 25b of the fixed leg 25. On the other hand, in the annular member 42 provided on the other side in the axial direction (lower side in the drawing) of the mount rubber 40, the first annular surface 42c on one side in the axial direction is in contact with the second surface 25c of the fixed leg 25, and the shaft The second annular surface 42d on the other side in the direction is in contact with the outer surface of the vehicle body body 10a.

Here, the length dimension along the axial direction of the two annular members 42 and the fixed leg 25 in a state of being overlapped with each other is substantially the same as the length dimension L1 along the axial direction of the tubular member 41. There is. Therefore, under the state where the fixing member 30 is tightened, the two annular members 42 and the fixing legs 25 do not rattle in the axial direction thereof.

In this way, the two annular members 42 are elastically deformed by receiving a load transmitted from the wiper motor 20 (fixed leg 25) in the vertical direction (vertical direction in the figure) (load from the other direction intersecting one direction). Will be done. In other words, the annular member 42 has a function of suppressing the transmission of vibration between the wiper motor 20 and the vehicle body body 10a. The lower the rigidity of the annular member 42, the more effectively the transmission of vibration between the wiper motor 20 and the vehicle body body 10a can be suppressed.

Here, as shown in FIG. 5, the wall thickness dimension t1 along the radial direction (horizontal direction) of the tubular member 41 and the wall thickness dimension t2 along the axial direction (longitudinal direction) of the annular member 42 are set, respectively. The wall thickness is almost the same (t1≈t2). On the other hand, the elastic modulus E1 of the elastic material of the tubular member 41 is set to be larger than the elastic modulus E2 of the elastic material of the annular member 42 (E1> E2).

Therefore, the lateral rigidity K1 of the tubular member 41 is higher than the vertical rigidity K2 of the annular member 42 (K1> K2). Therefore, the mount rubber 40 is excellent in the function of suppressing the transmission of vibration between the wiper motor 20 and the vehicle body body 10a, and the first and second wiper members 12 and 13 are covered by the first and second wiping ranges 11a and 11b. It also has an excellent function of accurately swinging.

Next, the method of manufacturing the mount rubber 40 formed as described above will be described in detail with reference to the drawings.

The tubular member 41 and the annular member 42 forming the mount rubber 40 are individually manufactured by the extrusion molding machine 50 as shown in FIG. Hereinafter, the extrusion molding machine 50 will be described in detail prior to the description of the method for manufacturing the mount rubber 40.

The extrusion molding machine 50 includes an extrusion molding section 51, a cross-linking furnace 52, a drawing section 53, and a cutting section 54 from the inlet side (left side in the drawing) to the outlet side (right side in the drawing).

The extrusion molding section 51 includes an extrusion molding die 51a that forms a tubular member 41 and an annular member 42. On the inlet side of the extruded die 51a, a cylinder 51b to which the elastic material W processed into a sheet shape is supplied is provided. Further, a feed box 51c for supplying the elastic material W is connected to the cylinder 51b. The elastic material W supplied to the inside of the cylinder 51b is pressed by the screw 51d and comes out in a tubular shape from the outlet side of the extruded die 51a.

The cross-linking furnace 52 passes through the tubular member 41 and the annular member 42 before cutting, which are tubular and emerge from the extrusion die 51a. As a result, the tubular member 41 and the annular member 42 before cutting are heated and cured.

The pull-out portion 53 is a mechanism that sandwiches the hardened tubular member 41 and the annular member 42 before cutting from the vertical direction, pulls them out from the cross-linking furnace 52, and sends them to the cut-out portion 54. The pull-out portion 53 includes a pair of belt-driven drive mechanisms 53a and 53b, whereby the tubular member 41 and the annular member 42 before cutting can be moved. Here, one of the drive mechanisms 53a includes an electric motor 53c as a drive source.

Then, the supply speed of the elastic material W by the feed box 51c, the rotation speed of the screw 51d, and the rotation speed of the electric motor 53c are controlled by a controller (not shown) so as to operate synchronously.

The cut portion 54 includes a pedestal 54a formed in a substantially L shape. The pedestal 54a supports the cured tubular member 41 and the annular member 42 without rattling. A cutting blade 54b slidable in the vertical direction is provided on the outlet side of the pedestal 54a. The cutting blade 54b is moved up and down at a predetermined timing by an electric actuator (not shown), whereby the cured tubular member 41 and the annular member 42 are designated as shown by the alternate long and short dash line in the drawing. It is cut into length dimensions L1 and L2 (see FIG. 5).

A stocker 55 is provided on the outlet side of the cutting portion 54, and the tubular member 41 and the annular member 42 cut to the predetermined length dimensions L1 and L2 by the cutting portion 54 are stored in the stocker 55.

The mount rubber 40 is assembled at the time of assembling the wiper motor 20 as described later (see FIG. 9), but when the mount rubber 40 is transported alone, it is assembled (manufactured) by the procedure shown below.

However, since the tubular member 41 and the annular member 42 constituting the mount rubber 40 are formed in the same manner, only the manufacturing method of the tubular member 41 is described in detail, and the manufacturing method of the annular member 42 is described in detail. Is omitted.

[Extrusion molding process]
First, an elastic material W (natural rubber or the like) having an elastic modulus of E1 as a material of the tubular member 41 is prepared. Next, as shown by the arrow (1) in FIG. 6, the elastic material W processed into a sheet shape is supplied into the cylinder 51b from the feed box 51c. After that, as shown by the arrow (2) in FIG. 6, the screw 51d is driven to extrude the elastic material W at the extrusion molding section 51. As a result, a hollow and long tubular member 41 (before cutting) is formed.

However, when the annular member 42 is extruded, an elastic material having an elastic modulus of E2 (natural rubber or the like) is used instead of the elastic material having an elastic modulus of E1 (E1> E2). Further, the extrusion-molded die 51a (see FIG. 6) is replaced with an extrusion-molded die (not shown) for the annular member 42.

As a result, the extrusion molding step of the tubular member 41 (annular member 42) constituting the mount rubber 40 is completed.

[Cutting process]
Subsequently, the hollow and long tubular member 41 extruded by the extrusion molding section 51 and passed through the cross-linking furnace 52 and cured is formed by the drawing section 53 as shown by the arrow (3) in FIG. It is sent to the cutting section 54 by driving. In the cutting portion 54, the cutting blade 54b is moved up and down at a predetermined timing as shown by the arrow (4) in FIG. 6 in synchronization with the feeding operation of the pulling portion 53. As a result, the hollow and long tubular member 41 is cut so that its axial length dimension is L1. However, in the case of the annular member 42, the annular member 42 is cut so that its axial length dimension is L2.

As described above, in the cutting step, the tubular member 41 is cut so that the axial length L1 is longer than the axial length L2 of the annular member 42 (L1> L2).

As a result, the cutting step of the tubular member 41 (annular member 42) constituting the mount rubber 40 is completed.

[Mounting process]
After that, one tubular member 41 and two annular members 42 completed after the cutting step are prepared. Next, as shown by arrows M1 and M2 in FIG. 7, the inner peripheral surfaces 42a of the annular member 42 are attached to the outer peripheral surfaces 41b on both sides of the tubular member 41 in the axial direction.

At this time, the inner peripheral surface 42a of the annular member 42 is fixed to the outer peripheral surfaces 41b on both sides in the axial direction of the tubular member 41 by press fitting without using an adhesive or the like. Further, the first annular surface 42c of the annular member 42 on one side (upper side in the drawing) and the first annular surface 41c of the tubular member 41 are made flush with each other, and the annular member 42 on the other side (lower side in the drawing). The second annular surface 42d (see FIG. 5) and the second annular surface 41d (see FIG. 5) of the tubular member 41 are flush with each other.

As a result, the assembly of the two annular members 42 to the one tubular member 41 forming the mount rubber 40 is completed, and the mounting process is completed.

After that, as shown by the arrow M3 in the drawing, the collar member 33 is attached to the inner peripheral surface 41a of the tubular member 41. As a result, the mount rubber 40 (with the collar member 33) is completed. Here, since the annular member 42 is fixed to the tubular member 41 by press fitting, the annular member 42 does not come off from the tubular member 41 by the degree of vibration when the mount rubber 40 is conveyed by itself.

As described above, the mount rubber 40 is formed by combining one tubular member 41 and two annular members 42. That is, the mount rubber 40 is formed of three elastic bodies. However, the materials and the number of tubular members 41 and annular members 42 that make up the mount rubber 40 can be freely tuned according to the specifications required for the mount rubber 40.

For example, the combinations shown in (a), (b), (c), (d), and (e) of FIG. 8 are possible. In addition, also in FIG. 8, shading is applied in the same manner as in FIG.

In the mount rubber 40 shown in FIG. 8A, one tubular member 41 and two annular members 42, 60 are combined. The two annular members 42 and 60 are formed of elastic materials having the same shape but different elastic moduli.

Specifically, the ring-shaped member 42 on one side (light-colored shading on the upper side in the figure) is in contact with the vehicle body body 10a (see FIG. 5), and the ring-shaped member on the other side (dark shaded area on the lower side in the figure) is in contact with the ring member 42. The member (second support portion) 60 has higher rigidity. That is, the other annular member 60 is less likely to bend with respect to the one annular member 42, and can support, for example, the heavier wiper motor 20.

However, depending on the direction in which the load from the wiper motor 20 is applied, the annular member 60 is arranged on one side (upper side in the drawing) of the tubular member 41 in the axial direction, and the axial direction of the tubular member 41 and the like. The annular member 42 may be arranged on the side (lower side in the drawing).

In the mount rubber 40 shown in FIG. 8B, one tubular member 41 and two annular members 42, 61 are combined. The two annular members 42 and 61 are formed of elastic materials having the same elastic modulus, but have different diameter dimensions.

Specifically, the annular member (second support portion) on the other side (lower side in the figure) that is in contact with the vehicle body body 10a (see FIG. 5) rather than the diameter dimension D2 of the annular member 42 on one side (upper side in the figure). The diameter dimension D3 of 61 is larger (D3> D2). That is, the other annular member 61 can come into contact with the vehicle body body 10a in a wider area, and even when the wiper motor 20 is greatly tilted, for example, between the wiper motor 20 and the vehicle body body 10a. The transmission of vibration can be effectively suppressed.

However, depending on the specifications required for the mount rubber 40, the other annular member 61 and the one annular member 42 may be formed of elastic materials having different elastic coefficients.

In the mount rubber 40 shown in FIG. 8C, one tubular member 41 and two annular members 42 and 62 are combined. The two annular members 42 and 62 are formed of elastic materials having the same elastic modulus, but have different axial length dimensions.

Specifically, the annular member (second support portion) on the other side (lower side in the drawing) that is in contact with the vehicle body body 10a (see FIG. 5) rather than the length dimension L3 of the annular member 42 on one side (upper side in the drawing). ) 62 has a longer length dimension L4 (L4> L3). Then, the axial dimension of the tubular member 41 and the collar member 33 is lengthened by the length of the annular member 62.

As described above, in the mount rubber 40 shown in FIG. 8C, the elasticity is adjusted by increasing the wall thickness of the other annular member 62, thereby reducing the types of elastic materials used while reducing the types of elastic materials used. It is possible to obtain the same action and effect as the modified example shown in FIG. 8 (a).

In the mount rubber 40 shown in FIG. 8D, one tubular member 41 and three annular members 42 are combined. Then, the axial dimension of the tubular member 41 and the collar member 33 is lengthened by the amount of one additional annular member 42. Further, one annular member 42 is mounted on one side of the tubular member 41 in the axial direction, and two annular members 42 are mounted on the other side of the tubular member 41 in the axial direction.

This makes it possible to support the heavier wiper motor 20 as in the modified example shown in FIG. 8 (a).

However, depending on the specifications required for the mount rubber 40, the three annular members 42 may be formed of elastic materials having different elastic moduli, and the annular member 42 closest to the vehicle body body 10a may be formed. The diameter may be larger than that of the annular member 42 of the above.

In the mount rubber 40 shown in FIG. 8 (e), the tubular member (first support portion) 63 is formed of the first tubular body 64 and the second tubular body 65, and the tubular member 63 has two annular members. The member 42 is attached. Specifically, the tubular member 63 has a small-diameter first cylinder 64 made of an elastic material having a predetermined elastic modulus and a large-diameter second cylinder made of an elastic material having an elastic modulus larger than that of the first cylinder 64. The body 65 and the body 65 are formed so as to overlap each other in the radial direction. The tubular member 63 is formed by press-fitting the first tubular body 64 into the second tubular body 65.

As a result, the lateral rigidity of the mount rubber 40 can be easily tuned. For example, by tuning the mount rubber 40 to a higher lateral rigidity, the first and second wiper members 12 and 13 (FIGS. FIG. 1) can be swung more accurately in the first and second wiping ranges 11a and 11b (see FIG. 1).

However, according to the specifications of the mount rubber 40, the tubular member 63 is not limited to forming the first tubular body 64 and the second tubular body 65 in the radial direction to form two layers, and three or more layers in the radial direction. The cylinders of the above may be overlapped and formed.

As described above, the materials and the number of the tubular member 41 and the annular member 42 to be used can be freely tuned according to the specifications required for the mount rubber 40. Therefore, when the mount rubber 40 is manufactured at the same manufacturing cost as before, the tubular member 41 and the annular member 42 can be molded at low cost, so that an expensive elastic material can be used accordingly. For example, silicone rubber or the like that can be easily colored and has excellent vibration absorption can be used. In this case, it is possible to easily grasp the tuning state from the outside while improving the appearance.

Next, a method of manufacturing the wiper device provided with the mount rubber 40 formed as described above, particularly a procedure for attaching the mount rubber 40 to the fixed leg 25 will be described in detail with reference to the drawings.

[Cylindrical member mounting process (first support mounting process)]
As shown by the arrow M4 in FIG. 9, first, the tubular member 41 (with the collar member 33) is made to face the mounting hole 25a of the fixed leg 25 from the axial direction, and is inserted into the mounting hole 25a for mounting. do. At that time, the mounting hole 25a is arranged at the center of the outer peripheral surface 41b along the axial direction of the tubular member 41.

Here, the tubular member 41 is lightly press-fitted into the mounting hole 25a. Therefore, the tubular member 41 does not fall off from the mounting hole 25a due to its own weight. As a result, the tubular member 41 is temporarily held in the mounting hole 25a, and the tubular member mounting process is completed.

[Arc member mounting process (second support mounting process)]
Next, as shown by the arrow M5 in FIG. 9, one annular member 42 is made to face one side in the axial direction of the tubular member 41 from the axial direction, and one side in the axial direction of the tubular member 41. The inner peripheral surface 42a of one of the annular members 42 is fixed to the outer peripheral surface 41b by press fitting. At this time, the first annular surface 42c of one of the annular members 42 and the first annular surface 41c of the tubular member 41 are made flush with each other. Further, the second annular surface 42d (see FIG. 5) of one of the annular members 42 and the first surface 25b of the fixed leg 25 are brought into contact with each other.

After that, as shown by the arrow M6 in FIG. 9, the other annular member 42 is made to face the other side in the axial direction of the tubular member 41 from the axial direction, and the other side in the axial direction of the tubular member 41. The inner peripheral surface 42a of the other annular member 42 is fixed to the outer peripheral surface 41b by press fitting. At this time, the second annular surface 42d (see FIG. 5) of the other annular member 42 and the second annular surface 41d (see FIG. 5) of the tubular member 41 are made flush with each other. Further, the first annular surface 42c of the other annular member 42 and the second surface 25c of the fixed leg 25 (see FIG. 5) are brought into contact with each other.

As a result, the fixed legs 25 are arranged between the annular members 42 along the axial direction of the tubular member 41, and the mount rubber 40 is assembled to the fixed legs 25 to complete the annular member mounting process. The collar member 33 may be attached to the inner peripheral surface 41a of the tubular member 41 after (finally) assembling the mount rubber 40 to the fixed leg 25.

[Fixed leg fixing process]
After that, as shown in FIG. 5, the fixing legs 25 are fixed to the vehicle body body 10a by inserting the bolts 31 constituting the fixing member 30 from one side in the axial direction of the tubular member 41 (color member 33). The work of fixing the fixed legs 25 to the vehicle body body 10a is performed a total of three times according to the number of the fixed legs 25.

As a result, the fixing leg fixing process is completed, and the mounting of the wiper motor 20 on the vehicle body body 10a is completed.

The mount rubber 40 can also be attached to the fixed leg 25 by the procedure shown in FIG.

Specifically, as shown in FIG. 10, first, in the first stage of the above-mentioned [Cylindrical member mounting step], on the outer peripheral surface 41b on one side in the axial direction of the tubular member 41, inside one of the annular members 42. The peripheral surface 42a is fixed in advance by press fitting. Next, as shown by the arrow M7 in FIG. 10, the tubular member 41 is made to face the mounting hole 25a of the fixed leg 25 from the axial direction, and is inserted into the mounting hole 25a for mounting.

Then, in the subsequent [annular member mounting step], as shown by the arrow M8 in FIG. 10, the other annular member 42 is made to face the other side of the tubular member 41 in the axial direction from the axial direction. The inner peripheral surface 42a of the other annular member 42 is fixed to the outer peripheral surface 41b on the other side in the axial direction of the tubular member 41 by press fitting.

According to the mounting procedure shown in FIG. 10, one of the annular members 42 is fixed in advance on one side in the axial direction of the tubular member 41. Therefore, in the [cylindrical member mounting step], the tubular member 41 It is not necessary to carefully work so that the mounting hole 25a is arranged in the central portion of the outer peripheral surface 41b along the axial direction of the above. Further, even when the state of light press-fitting of the tubular member 41 into the mounting hole 25a is loose, it is possible to reliably prevent the tubular member 41 from falling out of the mounting hole 25a, which in turn improves the assembling property. can.

Further, the mount rubber 40 can be attached to the fixed leg 25 by a procedure as shown in FIG.

As shown in FIG. 11, there is a wiper motor 20 having a notch 25d in the mounting hole 25a of the fixed leg 25. This notch 25d is used for mounting the mount rubber 40 from the radial outside of the mounting hole 25a. For the fixed leg 25 provided with such a notch 25d, the mount rubber 40 is attached to the fixed leg 25 by the procedure shown below.

[Mount rubber assembly process (support device assembly process)]
First, the mount rubber 40 is assembled according to the above-mentioned [extrusion molding step] → [cutting step] → [mounting step]. Specifically, the inner peripheral surfaces 42a of the two annular members 42 are fixed to the outer peripheral surfaces 41b on both sides in the axial direction of the tubular member 41 by press fitting to assemble the mount rubber 40. This completes the mount rubber assembly process.

[Press-fit mounting process]
Next, as shown by the arrow M9 in FIG. 11, the mount rubber 40 is made to face from the radial outside of the mounting hole 25a. At this time, the outer peripheral surface 41b of the tubular member 41 exposed to the outside at the center of the mount rubber 40 in the axial direction and the notch 25d of the mounting hole 25a face each other. Then, the outer peripheral surface 41b of the tubular member 41 is pressed against the notch portion 25d, and the tubular member 41 is mounted from the notch portion 25d into the mounting hole 25a by press fitting.

Here, the width dimension WD of the notch portion 25d is smaller than the diameter dimension D4 of the tubular member 41 (WD <D4). Therefore, the tubular member 41 passes through the notch 25d while being elastically deformed, and then does not come off from the mounting hole 25a.

[Fixed leg fixing process]
After that, as shown in FIG. 5, the fixing legs 25 are fixed to the vehicle body body 10a by inserting the bolts 31 constituting the fixing member 30 from one side in the axial direction of the tubular member 41 (color member 33). The work of fixing the fixed legs 25 to the vehicle body body 10a is performed a total of three times according to the number of the fixed legs 25.

As a result, the fixing leg fixing process is completed, and the mounting of the wiper motor 20 on the vehicle body body 10a is completed.

As described in detail above, according to the mount rubber 40 according to the present embodiment, the mount rubber 40 receives a load from the lateral direction and elastically deforms the tubular member 41, and the mount rubber 40 receives a load from the vertical direction. A hollow extruded product formed from an elastically deformed annular member 42, the tubular member 41 and the annular member 42 having inner peripheral surfaces 41a and 42a and outer peripheral surfaces 41b and 42b having no step in the axial direction thereof. bottom.

As a result, the rigidity of the tubular member 41 and the rigidity of the annular member 42 can be individually tuned, and thus the tuning of the entire mount rubber 40 can be simplified. Further, since the tubular member 41 and the annular member 42 can be extruded and their shapes can be simplified, the productivity can be improved without lowering the durability.

Further, according to the mount rubber 40 according to the present embodiment, the tubular member 41 is a tubular elastic body, the annular member 42 is an annular elastic body, and the outer peripheral surfaces of the tubular member 41 on both sides in the axial direction. The inner peripheral surface 42a of the annular member 42 is attached to each of the 41b. Thereby, the mount rubber 40 having the same shape as the conventional one can be realized only by the combination of the tubular member 41 and the annular member 42 having a simple shape. Therefore, it can be sufficiently applied to the conventional wiper device.

Further, according to the mount rubber 40 according to the present embodiment, since the tubular member 41 and the annular member 42 are made of elastic materials having different elastic coefficients, the functions of the mount rubber 40 are divided into the vertical direction and the horizontal direction. Can be easily tuned. Further, at that time, it is not necessary to complicate the shapes of the tubular member 41 and the annular member 42.

Further, according to the mount rubber 40 according to the present embodiment, the rigidity of the tubular member 41 is higher than the rigidity of the annular member 42, so that the shape of the mount rubber 40 is not complicated. It is possible to easily meet the needs of increasing the rigidity in the horizontal direction and weakening the rigidity in the vertical direction.

Further, according to the method for manufacturing the mount rubber 40 according to the present embodiment, the mount rubber 40 can be easily formed through the [extrusion molding step] → [cutting step] → [mounting step]. In this case, in the [extrusion molding step], elastic materials having different elastic coefficients are extruded, so that the tubular member 41 and the annular member 42 having different rigidity can be easily formed individually. Further, in the [cutting step], the axial length (L1) of the tubular member 41 is cut so as to be longer than the axial length (L2) of the annular member 42, so that the lengths are different from each other. The tubular member 41 and the annular member 42 can be easily formed individually. Further, in the [mounting step], the inner peripheral surface 42a of the annular member 42 is fixed to the outer peripheral surfaces 41b on both sides in the axial direction of the tubular member 41 by press fitting, so that the shape is the same as before without using an adhesive or the like. The mount rubber 40 can be easily formed.

Further, according to the wiper device provided with the mount rubber 40 according to the present embodiment, it is easy to meet one of the unique needs, that is, the need to increase the rigidity in the horizontal direction and weaken the rigidity in the vertical direction. Can be handled. In this case, the shapes of the tubular member 41 and the annular member 42 forming the mount rubber 40 do not need to be complicated, and an increase in manufacturing cost can be suppressed. Therefore, an expensive elastic material (silicone rubber or the like) can be adopted within the same manufacturing cost range as before, and a more varied mount rubber 40 can be provided. Further, by freely selecting the combination (shape, material, and number) of the tubular member 41 and the annular member 42, various needs can be easily met.

Further, according to the wiper device provided with the mount rubber 40 according to the present embodiment, the tubular member 41 and the annular member 42 can be made of elastic materials having different elastic coefficients, and in this case, the tubular member The lateral rigidity and the vertical rigidity can be easily tuned without complicating the shapes of the 41 and the annular member 42, respectively.

Further, according to the wiper device provided with the mount rubber 40 according to the present embodiment, the rigidity of the tubular member 41 is higher than the rigidity of the annular member 42, so that the rigidity in the lateral direction is increased. It is possible to meet the needs of weakening the rigidity in the vertical direction.

Further, according to the wiper device provided with the mount rubber 40 according to the present embodiment, the diameter dimension D3 of the annular member 42 in contact with the vehicle body body 10a can be made larger than the diameter dimension D2 of the other annular member 42. (See FIG. 8B), vibration transmission can be effectively suppressed even when the wiper motor 20 is greatly tilted.

Further, according to the method for manufacturing the wiper device provided with the mount rubber 40 according to the present embodiment, the wiper motor 20 is subjected to a [cylindrical member mounting step] → [annular member mounting step] → [fixed leg fixing step]. It can be attached to the vehicle body body 10a. In this case, in the previous stage of the [cylindrical member mounting step], the inner peripheral surface 42a of one of the annular members 42 may be press-fitted and fixed in advance to the outer peripheral surface 41b on one side in the axial direction of the tubular member 41. can. Thereby, when the wiper motor 20 is attached to the vehicle body body 10a, the mount rubber 40 can be assembled in the process.

Further, according to the manufacturing method of the wiper device provided with the mount rubber 40 according to the present embodiment, the wiper motor 20 is attached to the vehicle body through the [mount rubber assembly process] → [press-fit mounting process] → [fixed leg fixing process]. It can be attached to 10a. As a result, the mount rubber 40 can be easily mounted on the wiper motor 20 having the notch 25d in the mounting hole 25a.

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

In the above embodiment, the housing 21 of the wiper motor 20 is provided with the fixed legs 25, and the fixed legs 25 are equipped with the mount rubber 40, but the present invention is not limited to this. For example, it can also be applied to the wiper device 70 as shown in FIG. The same symbols are attached to the parts having the same functions as those of the above embodiment (see FIG. 1), and detailed description thereof will be omitted.

Specifically, the wiper device 70 shown in FIG. 12 swingably holds the first and second pivot shafts 14a and 14b that swing the first and second wiper members 12 and 13 (see FIG. 1). The first and second pivot holders 71a and 71b are provided. These first and second pivot holders 71a and 71b are integrated by a connecting pipe 72. A motor bracket 73 is fixed to the connecting pipe 72, and a wiper motor 74 is fixed to the motor bracket 73. A link mechanism consisting of a crank arm 17, a drive rod 18, a connecting rod 16, and first and second drive levers 15a and 15b between the output shaft 24 of the wiper motor 74 and the first and second pivot shafts 14a and 14b. 75 is provided. The first and second pivot holders 71a and 71b and the motor bracket 73 are respectively provided with fixed legs 25 integrally, and mount rubber 40 is attached to each of these fixed legs 25.

Here, the first and second pivot holders 71a and 71b, the connecting pipe 72 and the motor bracket 73 unitize the first and second pivot shafts 14a and 14b, the link mechanism 75 and the wiper motor 74, and the frame in the present invention. The entire wiper device 70, which constitutes a member and is unitized, constitutes the drive device in the present invention.

Further, in the above embodiment, the mount rubber 40 is applied to a so-called tandem type wiper device in which two first and second wiper members 12 and 13 are swung by one wiper motor 20 via a link mechanism. As shown, the present invention is not limited to this. For example, it can be applied to a direct drive facing wiper type wiper device in which the base end portion of the wiper member is directly fixed to the output shaft 24 of the wiper motor 20 to control the forward and reverse rotation of the output shaft 24. ..

Further, in the above embodiment, the mount rubber 40 is applied to the wiper motor 20 capable of generating vibration, but the present invention is not limited to this, and the power window device and the electric sunroof device provided in the vehicle 10 are not limited to this. Furthermore, it can be applied to other drive devices that can generate vibration, such as an electric sliding door device.

In addition, the material, shape, dimensions, number, installation location, etc. of each component in the above embodiment are arbitrary as long as the present invention can be achieved, and are not limited to the above embodiment.

10 Vehicle 10a Body body (fixed object)
11 Windshield (wiping surface)
11a 1st wiping range 11b 2nd wiping range 12 1st wiper member (wiper device)
12a 1st wiper blade 12b 1st wiper arm 13 2nd wiper member (wiper device)
13a 2nd wiper blade 13b 2nd wiper arm 14a 1st pivot shaft (wiper device)
14b 2nd pivot shaft (wiper device)
15a 1st drive lever (wiper device)
15b 2nd drive lever (wiper device)
16 Connecting rod (wiper device)
17 Crank arm (wiper device)
18 Drive rod (wiper device)
20 Wiper motor (drive device, wiper device)
21 Housing 22 Motor housing 23 Gear housing 23a Boss 24 Output shaft 25 Fixed leg 25a Mounting hole 25b 1st surface 25c 2nd surface 25d Notch 30 Fixing member 31 Bolt (fixing member)
31a Head 31b Collar 32 Nut (fixing member)
33 Color member (fixing member)
40 mount rubber (support device)
41 Cylindrical member (first support part)
41a Inner peripheral plane 41b Outer peripheral plane 41c First annular plane 41d Second annular plane 42 Ring member (second support)
42a Inner peripheral surface 42b Outer peripheral surface 42c First annular surface 42d Second annular surface 50 Extrusion molding machine 51 Extrusion molding part 51a Extrusion molding die 51b Cylinder 51c Feed box 51d Screw 52 Cross-linking furnace 53 Extraction part 53a, 53b Drive mechanism 53c Electric motor 54 Cutting part 54a Pedestal 54b Cutting blade 55 Stocker 60 Circular member (second support part)
61 Circular member (second support part)
62 Circular member (second support part)
63 Cylindrical member (first support part)
64 1st cylinder 65 2nd cylinder 70 Wiper device (drive device)
71a 1st pivot holder (frame member)
71b 2nd pivot holder (frame member)
72 Connecting pipe (frame member)
73 Motor bracket (frame member)
74 Wiper Motor 75 Link Mechanism BJ Ball Joint CN Connector Connection GC Gear Cover LRP Down Inversion Position MC Motor Cover URP Up Inversion Position W Elastic Material

Claims (9)

A wiper member that wipes the wiping surface and
A wiper motor that swings the wiper member and
A fixed leg provided on the wiper motor and fixed to the object to be fixed,
A support device mounted on the fixed leg and provided between the fixed leg and the fixed object,
A fixing member that fixes the fixing leg to the fixing object,
It is a wiper device equipped with
The support device is
One first support, which is a tubular elastic body,
Two second supports, which are annular elastic bodies,
Have,
The first support portion and the second support portion are hollow extruded products having an inner peripheral surface and an outer peripheral surface having no steps in the axial direction thereof .
Before Symbol outer peripheral surface of the axially opposite sides of the first support portion, the inner peripheral surface of the second support portion is mounted, respectively,
The first support portion in the mounting hole of the fixing leg is mounted,
Wherein said fixed leg is disposed between the second support portion first along the axial direction of the support portion,
Wherein and fixing member is inserted through the first support portion,
The first support portion abuts on the fixed leg in its radial direction.
The second support portion abuts on the fixed leg in its axial direction.
The first support portion has a higher rigidity than the second support portion.
Wiper device. A wiper member that wipes the wiping surface and
A pivot shaft that swings the wiper member and
A link mechanism that swings the pivot shaft and
A wiper motor that drives the link mechanism and
A frame member that unitizes the pivot shaft, the link mechanism, and the wiper motor,
A fixed leg provided on the frame member and fixed to the object to be fixed,
A support device mounted on the fixed leg and provided between the fixed leg and the fixed object,
A fixing member that fixes the fixing leg to the fixing object,
It is a wiper device equipped with
The support device is
One first support, which is a tubular elastic body,
Two second supports, which are annular elastic bodies,
Have,
The first support portion and the second support portion are hollow extruded products having an inner peripheral surface and an outer peripheral surface having no steps in the axial direction thereof .
Before Symbol outer peripheral surface of the axially opposite sides of the first support portion, the inner peripheral surface of the second support portion is mounted, respectively,
The first support portion in the mounting hole of the fixing leg is mounted,
Wherein said fixed leg is disposed between the second support portion first along the axial direction of the support portion,
Wherein and fixing member is inserted through the first support portion,
The first support portion abuts on the fixed leg in its radial direction.
The second support portion abuts on the fixed leg in its axial direction.
The first support portion has a higher rigidity than the second support portion.
Wiper device. In the wiper device according to claim 1 or 2.
The first support portion and the second support portion are made of elastic materials having different elastic coefficients.
Wiper device. In the wiper device according to any one of claims 1 to 3.
The diameter dimension of the second support portion in contact with the fixing object is larger than the diameter dimension of the other second support portion.
Wiper device. A wiper member that wipes the wiping surface and
A wiper motor that swings the wiper member and
A fixed leg provided on the wiper motor and fixed to the object to be fixed,
A support device mounted on the fixed leg and provided between the fixed leg and the fixed object,
A fixing member that fixes the fixing leg to the fixing object,
It is a manufacturing method of a wiper device equipped with
The support device is
One first support, which is a tubular elastic body,
Two second supports, which are annular elastic bodies,
Have,
The first support portion and the second support portion are hollow extruded products having an inner peripheral surface and an outer peripheral surface having no steps in the axial direction thereof.
The first support portion has higher rigidity than the second support portion.
It said insert said first support portion to the attachment hole of the fixing leg is mounted, the first support portion, a first support portion attachment step of Ru is contacted with the fixed leg in a radial direction,
The inner peripheral surface of the second support section, is fixed by press-fitting to the outer peripheral surface of the first support portion, between the second supporting portion along the axial direction of the first supporting portion, placing the fixed leg , the second supporting portion, and the second support portion mounting step in which Ru is brought into contact with the fixed leg in the axial direction,
A fixing leg fixing step of inserting the fixing member into the first support portion from the axial direction and fixing the fixing leg to the fixing object.
Have,
How to manufacture a wiper device. A wiper member that wipes the wiping surface and
A pivot shaft that swings the wiper member and
A link mechanism that swings the pivot shaft and
A wiper motor that drives the link mechanism and
A frame member that unitizes the pivot shaft, the link mechanism, and the wiper motor,
A fixed leg provided on the frame member and fixed to the object to be fixed,
A support device mounted on the fixed leg and provided between the fixed leg and the fixed object,
A fixing member that fixes the fixing leg to the fixing object,
It is a manufacturing method of a wiper device equipped with
The support device is
One first support, which is a tubular elastic body,
Two second supports, which are annular elastic bodies,
Have,
The first support portion and the second support portion are hollow extruded products having an inner peripheral surface and an outer peripheral surface having no steps in the axial direction thereof.
The first support portion has higher rigidity than the second support portion.
It said insert said first support portion to the attachment hole of the fixing leg is mounted, the first support portion, a first support portion attachment step of Ru is contacted with the fixed leg in a radial direction,
The inner peripheral surface of the second support section, is fixed by press-fitting to the outer peripheral surface of the first support portion, between the second supporting portion along the axial direction of the first supporting portion, placing the fixed leg , the second supporting portion, and the second support portion mounting step in which Ru is brought into contact with the fixed leg in the axial direction,
A fixing leg fixing step of inserting the fixing member into the first support portion from the axial direction and fixing the fixing leg to the fixing object.
Have,
How to manufacture a wiper device. In the method for manufacturing a wiper device according to claim 5 or 6.
In the previous stage of the first support mounting process,
The inner peripheral surface of one of the second support portions is press-fitted in advance and fixed to the outer peripheral surface of the first support portion on one side in the axial direction.
How to manufacture a wiper device. A wiper member that wipes the wiping surface and
A wiper motor that swings the wiper member and
A fixed leg provided on the wiper motor and fixed to the object to be fixed,
A support device mounted on the fixed leg and provided between the fixed leg and the fixed object,
A fixing member that fixes the fixing leg to the fixing object,
It is a manufacturing method of a wiper device equipped with
The support device is
One first support, which is a tubular elastic body,
Two second supports, which are annular elastic bodies,
Have,
The first support portion and the second support portion are hollow extruded products having an inner peripheral surface and an outer peripheral surface having no steps in the axial direction thereof.
The first support portion has higher rigidity than the second support portion.
A support device assembly step in which the inner peripheral surfaces of the second support portion are fixed to the outer peripheral surfaces on both sides in the axial direction of the first support portion by press fitting.
The first support portion is press-fitted into the mounting hole of the fixed leg from a notch provided in the mounting hole, and the first support portion is brought into contact with the fixed leg in the radial direction thereof, and the said the second support portion, a press-attaching step of Ru is contacted with the fixed leg in the axial direction,
A fixing leg fixing step of inserting the fixing member into the first support portion from the axial direction and fixing the fixing leg to the fixing object.
Have,
How to manufacture a wiper device. A wiper member that wipes the wiping surface and
A pivot shaft that swings the wiper member and
A link mechanism that swings the pivot shaft and
A wiper motor that drives the link mechanism and
A frame member that unitizes the pivot shaft, the link mechanism, and the wiper motor,
A fixed leg provided on the frame member and fixed to the object to be fixed,
A support device mounted on the fixed leg and provided between the fixed leg and the fixed object,
A fixing member that fixes the fixing leg to the fixing object,
It is a manufacturing method of a wiper device equipped with
The support device is
One first support, which is a tubular elastic body,
Two second supports, which are annular elastic bodies,
Have,
The first support portion and the second support portion are hollow extruded products having an inner peripheral surface and an outer peripheral surface having no steps in the axial direction thereof.
The first support portion has higher rigidity than the second support portion.
A support device assembly step in which the inner peripheral surfaces of the second support portion are fixed to the outer peripheral surfaces on both sides in the axial direction of the first support portion by press fitting.
The first support portion is press-fitted into the mounting hole of the fixed leg from a notch provided in the mounting hole, and the first support portion is brought into contact with the fixed leg in the radial direction thereof, and the said the second support portion, a press-attaching step of Ru is contacted with the fixed leg in the axial direction,
A fixing leg fixing step of inserting the fixing member into the first support portion from the axial direction and fixing the fixing leg to the fixing object.
Have,
How to manufacture a wiper device.

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