JP6100953B2 - Wiper device - Google Patents

Description

  The present invention relates to a wiper device.

  Conventionally, as a floating support structure, a cylindrical portion that is fitted in a through hole formed in a plate-like portion of a supported body, and a plate-like portion that extends radially outward from both ends of the cylindrical portion and sandwiches the plate-like portion are provided. There is one in which a supported body is floatingly supported by a support body through an elastic member having a pair of extended portions. As such a floating support structure, there is a structure that facilitates the mounting work of the elastic member by making the through hole a substantially C-shaped open hole partially opened (for example, Patent Document 1). reference). In addition, an auxiliary projection that contacts the outer peripheral surface of the extended portion of the elastic member is formed on the supported body in the floating support structure (see Patent Document 1). Therefore, in this floating support structure, since the elastic member contacts the supported body over a wide area, even if vibration is applied, the elastic member is prevented from sliding carelessly, and wear of the elastic member can be reduced. it can.

Japanese Utility Model Publication No. 4-71359

  By the way, the supported body as described above may be transported or the like in a state where an elastic member is mounted in the open hole before being assembled to the support body. And when some external force including vibration etc. is applied to the elastic member during transportation etc., the open part of the open hole becomes the escape route of the meat at the time of deformation of the elastic member, so the elastic member falls off from the open hole There was a fear that it would end up.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a wiper device that can suppress the dropout of the elastic member from between the ends of the pair of projecting portions of the plate-like portion. It is to provide.

  The invention according to claim 1 has a plate-like portion provided with a pair of overhang portions, and the end portions of the pair of overhang portions are radially outward from both ends of the tube portion and the tube portion. This is a gap for inserting an elastic member having a pair of outwardly extending portions provided so as to sandwich the plate-like portion, and the cylindrical portion of the elastic member is placed inside the pair of overhanging portions. In the wiper device to be fitted, the elastic member has an inner concave portion inside the outer edge of the outer extension portion, and the plate-like portion has an engagement wall erected in the thickness direction thereof The gist is to engage in the direction along the plate surface of the extension part and the plate-like part in a state where the engagement wall is housed in the inner recess.

  According to the same configuration, the plate-like portion is provided with the engaging wall standing in the thickness direction thereof, and is placed on the outer extension portion and the plate surface of the plate-like portion while being accommodated in the inner recess of the engagement wall. For example, when the elastic member is transported in a state where the elastic member is mounted, the elastic member may come off between the ends of the pair of projecting portions of the plate-like portion due to some external force, for example. Since the engaging wall is engaged with and hooked with the extended portion, the elastic member is prevented from falling off between the ends of the pair of projecting portions of the plate-like portion.

  Invention of Claim 2 is a wiper apparatus of Claim 1, Comprising: The said engagement wall is a pair of this except for the clearance gap between the edge parts of a pair of said protrusion part in the said plate-shaped part. The gist is that it is formed around the entire inner surface of the overhanging portion.

  According to the same configuration, the engagement wall is formed around the entire inner surface of the pair of overhang portions other than the gap between the ends of the pair of overhang portions in the plate-like portion. Since the engaging wall is engaged with and hooked with the extended portion, the elastic member is further prevented from falling off between the ends of the pair of projecting portions of the plate-like portion.

  Invention of Claim 3 is a wiper apparatus of Claim 1, Comprising: The said engagement wall is a pair of this except for the clearance gap between the edge parts of a pair of said protrusion part in the said plate-shaped part. The gist is that it is formed in a part of the periphery of the inner surface of the overhanging portion.

  According to this configuration, the engagement wall is formed at a part of the periphery of the inner surface of the pair of overhanging portions other than the gap between the ends of the pair of overhanging portions in the plate-like portion. A large space can be provided between the elastic member and the portion where there is no joint wall, and the vibration damping effect can be enhanced.

A fourth aspect of the present invention is the wiper device according to any one of the first to third aspects, wherein the engagement walls are formed on both surfaces of the plate-like portion, respectively. .
According to this configuration, since the engagement walls are formed on both surfaces of the plate-like portion, respectively, the engagement walls are engaged with and hooked to the extension portions on both surfaces of the plate-like portion. The dropout of the elastic member from between the ends of the overhanging portion is further suppressed.

Invention of Claim 5 is a wiper apparatus of any one of Claim 1 thru | or 3, Comprising: The said engagement wall was formed only in one surface of the said plate-shaped part. And
According to the same configuration, since the engagement wall is formed only on one surface of the plate-like portion, for example, a large space can be provided between the elastic member on the other surface side of the plate-like portion, It is possible to enhance the vibration damping effect. Further, since the engagement wall is formed only on one surface of the plate-like portion, for example, when it is made of a plate member such as a steel plate, it can be easily formed by burring.

  A sixth aspect of the present invention is the wiper device according to any one of the first to fifth aspects, wherein the extended portion of the elastic member is the engaging wall provided upright on the plate-like portion. The gist of the invention is that it has the inner recess facing the side and protrudes toward the plate-like portion on the radially outer side of the engagement wall.

  The invention according to claim 7 is the wiper device according to any one of claims 1 to 6, wherein the motor, a wiper link mechanism that converts the rotation of the motor into a reciprocating rotation of the pivot shaft, And a wiper frame to which the motor and the wiper link mechanism are attached. The pivot shaft is rotatably supported by a pivot holder integrally connected to the wiper frame. The gist is to have a shape portion.

  The invention according to claim 8 is the wiper device according to any one of claims 1 to 6, comprising a motor having a motor body and a gear housing, wherein the motor protrudes from the gear housing. The gist is to have the plate-like portion.

  ADVANTAGE OF THE INVENTION According to this invention, the wiper apparatus which can suppress the drop-off | omission of the elastic member from between the edge parts of a pair of overhang | projection part of a plate-shaped part can be provided.

The top view of the wiper device in one embodiment. The disassembled perspective view which shows a part of floating support structure in one Embodiment. The end view which shows the floating support structure in one Embodiment. The partial top view of the pivot holder in one Embodiment. (A)-(d) The partial top view of the pivot holder in another example. (A)-(c) The end elevations which show the floating support structure in another example. The top view which shows the motor in another example.

Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1, the wiper frame 11 of the wiper device is provided with a wiper motor 12 and wiper link mechanisms 14 and 15 for converting the rotation of the wiper motor 12 into a reciprocating rotation of a pivot shaft 13. The pivot shaft 13 is rotatably supported by a pivot holder 16 as a supported body integrally connected to the wiper frame 11, and a wiper arm (not shown) having a wiper blade (not shown) connected to the tip thereof. ) Is fixed.

  The pivot holder 16 includes a bearing portion 16a that rotatably supports the pivot shaft 13, and a plate-like portion 16b that extends in a radial direction from an axial intermediate portion of the bearing portion 16a. As shown in FIGS. 2 and 4, the plate-like portion 16 b has a substantially C-shaped open hole 16 c that is partially opened (one at each end of the plate-like portion 16 b in the pivot holder 16. (In two places in total).

  As shown in FIGS. 2 and 3, the open hole 16c extends radially outward from both ends of the cylindrical portion 17a fitted into the open hole 16c and sandwiches the plate-like portion 16b. An elastic member 17 having a pair of outwardly extending portions 17b provided on is attached.

  As shown in FIG. 3, the pivot holder 16 is floatingly supported by a vehicle body 20 as a support body via an elastic member 17 by a collar 18 and a bolt 19. Specifically, the collar 18 includes a cylindrical portion 18a that is fitted (press-fitted) into the cylindrical portion 17a, and extends outward from the base end portion (lower end portion in FIG. 3) of the cylindrical portion 18a in the radial direction. A flange portion 18b that abuts the axial end surface of 17b, and a female screw 18c (see FIG. 2) is formed on the inner surface of the cylindrical portion 18a. As shown in FIG. 3, the bolt 19 passes through the mounting hole 20a of the vehicle body 20 and is screwed into the female screw 18c so that the elastic member 17 is sandwiched between the vehicle body 20 and the flange portion 18b in the axial direction. As a result, the pivot holder 16 is floatingly supported on the vehicle body 20 via the elastic member 17.

  Here, the plate-like portion 16b of the present embodiment has an engagement wall 16d that engages with the extension portion 17b and the extension portion 17b (inside the outer edge of the extension portion 17b). Stands in the thickness direction. In other words, the plate-like portion 16b is provided with an engaging wall 16d that faces the outer extension portion 17b in the plate thickness direction and engages with the outer extension portion 17b in the plate thickness orthogonal direction.

  Specifically, as shown in FIGS. 2 and 4, the engagement wall 16d of the present embodiment is formed around the entire open hole 16c other than the open portion (open portion) 16e in the open hole 16c. Further, as shown in FIG. 3, the engaging walls 16d are formed on both surfaces of the plate-like portion 16b. Further, as shown in FIG. 3, the engaging wall 16d is erected from the plate-like portion 16b along the inner edge of the opening hole 16c, specifically, so as to extend the inner surface of the opening hole 16c in the axial direction. Further, as shown in FIG. 3, the engagement wall 16 d has a shape with a cross section at the tip thereof having a corner (substantially quadrangular). On the other hand, as shown in FIG. 3, an annular inner concave portion 17 c is formed on each outer extension portion 17 b of the elastic member 17 of the present embodiment on the side facing the engagement wall 16 d at the center in the radial direction. Yes. When the elastic member 17 is mounted in the open hole 16c of the plate-like portion 16b, the engagement wall 16d is accommodated in the inner recess 17c and is perpendicular to the plate thickness of the outer extension portion 17b (plate-like portion 16b). In the direction along the plate surface), specifically, to engage or restrict movement (deformation) of the outwardly extending portion 17b in the radial direction due to elastic deformation. In each of the extended portions 17b of the elastic member 17 of the present embodiment, an annular outer concave portion 17d is formed on the side that does not face the engaging wall 16d at the center in the radial direction. Moreover, as shown in FIG. 3, the cylinder part 17a of this embodiment is made into the shape where the cross section curved (waved). The space formed by the curved shape of the inner concave portion 17c, the outer concave portion 17d, and the cylindrical portion 17a is useful for enhancing the vibration damping effect.

Next, the operation of the wiper device (floating support structure) configured as described above will be described.
In the wiper device fixed to the vehicle body 20 as described above, when the wiper motor 12 is driven, the driving force is transmitted to the pivot shaft 13 via the wiper link mechanisms 14 and 15, and together with the pivot shaft 13. A wiper arm and a wiper blade (not shown) are reciprocated to perform a wiping operation. At this time, the vibration of the wiper motor 12 is transmitted to the pivot holder 16 mainly via the wiper frame 11, but the pivot holder 16 is supported by the vehicle body 20 via the elastic member 17, so that the vibration is attenuated by the elastic member. Thus, it is possible to suppress the vibration from being transmitted to the vehicle body 20 side, and thus to the driver's seat side.

Next, the characteristic effects of the above embodiment will be described below.
(1) The plate-like portion 16b of the pivot holder 16 is provided with an outwardly extending portion 17b and an engaging wall 16d that is engaged in the outwardly-extending portion 17b in the thickness direction of the plate-like portion 16b. In other words, the plate-like portion 16b is provided with an engaging wall 16d that is opposed to the extended portion 17b of the elastic member 17 in the plate thickness direction and engages with the extended portion 17b in the plate thickness orthogonal direction. Therefore, for example, when the pivot member 16 to which the elastic member 17 is attached is transported in the stage before the assembly to the vehicle body 20, even if the elastic member 17 is about to fall off the opening hole 16c by some external force, the engagement wall 16d is not Since it engages with the extended part 17b and is hooked, it is possible to prevent the elastic member 17 from falling off the opening hole 16c (pivot holder 16). That is, when the pivot holder 16 is transported, the elastic member 17 may drop off from the open portion 16e in the open hole 16c, or the open portion 16e may become a meat escape path when the elastic member 17 is deformed. However, there is a risk that the cylindrical portion 17a may fall off in the direction of penetration of the open hole 16c while tilting, but in any case, the drop off can be suppressed by the engagement of the engagement wall 16d. Further, the pivot holder 16 may be transported in a state where the collar 18 is further attached to the elastic member 17 attached to the pivot holder 16 (the cylindrical portion 18a is press-fitted into the cylindrical portion 17a). Due to the engagement of the wall 16d, the elastic member 17 and the collar 18 are prevented from falling off from the opening hole 16c (pivot holder 16).

  (2) Since the engaging wall 16d is formed in the entire periphery of the open hole 16c other than the opened portion 16e in the open hole 16c, the engaging wall 16d and the extended portion 17b of the elastic member 17 are formed in the entire peripheral portion. Since it is engaged and hooked, dropping of the elastic member 17 from the opening hole 16c is further suppressed.

  (3) Since the engaging walls 16d are formed on both surfaces of the plate-like portion 16b, the engaging walls 16d are engaged with the extended portions 17b of the elastic member 17 on both surfaces of the plate-like portion 16b. Further, the elastic member 17 is further prevented from falling off from the opening hole 16c.

The above embodiment may be modified as follows.
In the above embodiment, the engagement wall 16d is formed around the entire open hole 16c other than the open portion 16e in the open hole 16c. However, the present invention is not limited to this, and the open portion other than the open portion 16e is open. You may form in a part in the circumference | surroundings of the hole 16c.

For example, as shown in FIG. 5A, the engagement wall 21 may be formed only on the open side around the open hole 16c and on both sides of the open portion 16e.
Also, for example, as shown in FIG. 5B, the engagement wall 22 is formed only on the open side around the open hole 16c, and only on one of the both sides with the open portion 16e interposed therebetween. May be.

Further, for example, as shown in FIG. 5C, the engagement wall 23 may be formed only on the opposite side of the open side around the open hole 16c.
Further, for example, as shown in FIG. 5D, a plurality of engagement walls 24 (seven in this example) may be formed around the open hole 16c at equal intervals.

  In these cases (FIGS. 5A to 5D), the engaging walls 21 to 24 are formed in a part around the opening hole 16c. A large space can be provided between the elastic member 17 and the elastic member 17 (see FIG. 3) in other words, in other words, the inner concave portion 17c becomes a large space as it is, and the vibration damping effect can be enhanced.

  In the above embodiment, the engagement walls 16d are formed on both surfaces of the plate-like portion 16b. However, the present invention is not limited to this, and as shown in FIG. 6A, one of the plate-like portions 16b. It is good also as the engagement wall 25 formed only in the surface (upper surface in Fig.6 (a)).

  In this way, for example, a large space can be provided between the plate-like portion 16b and the elastic member 17 on the other surface side (lower side in FIG. 6A), in other words, the plate-like portion 16b. The inner concave portion 17c on the other surface side becomes a large space as it is, and the vibration damping effect can be enhanced. Further, for example, when a plate member such as a steel plate is used as a supported body (for example, a motor bracket (not shown) to which a motor is attached), it can be easily formed by burring.

  In the above embodiment, the engagement wall 16d is erected from the plate-like portion 16b so as to extend the inner surface of the open hole 16c in the axial direction. However, the present invention is not limited to this, and FIG. As shown, it may be an engaging wall 26 erected from the plate-like portion 16b at a position spaced from the inner surface of the open hole 16c.

  In the above embodiment, the engaging wall 16d has a shape in which the cross section of the tip (in the standing direction) has a corner. However, the present invention is not limited to this, and as shown in FIG. In addition, the engagement wall 27 may be changed to a curved surface in which the cross section of the tip portion has no corners. If it does in this way, it can reduce that elastic member 17 is damaged, for example.

  In the above embodiment, the elastic member 17 has the inner concave portion 17c and the outer concave portion 17d, and the cylindrical portion 17a has a curved (wavy) cross section. However, at least the engagement wall 16d (21 (27) may be changed to an elastic member having another shape as long as an inner concave portion that can be engaged in the direction perpendicular to the plate thickness of the plate-like portion 16b (within the extended portion) is formed.

  In the above embodiment, the supported body is the pivot holder 16, but the present invention is not limited to this, and the same floating support structure may be adopted for other supported bodies. For example, as shown in FIG. 7, a motor 33 including a motor main body 31 and a gear housing 32 is used as a supported body, and a similar structure (open hole and engagement) is formed on a plate-like portion 32a formed protruding from the gear housing 32. A wall) may be provided, and a support body (not shown) may be similarly floatingly supported via the elastic member 17.

The technical idea that can be grasped from the above embodiments will be described below together with the effects thereof.
(A) The tip of the engagement wall is a curved surface.

According to this configuration, since the distal end portion of the engagement wall is a curved surface, it is possible to reduce, for example, that the elastic member is damaged.
An object of the technical idea described below is to provide a floating support structure and a supported body that can prevent the elastic member from falling off between the ends of the pair of protruding portions of the supported body.

  A pair of projecting portions are provided on the plate-shaped portion of the supported body, and the plate-shaped portion extends between the ends of the pair of projecting portions radially outward from both ends of the tube portion. A gap for inserting an elastic member having a pair of extending portions provided so as to sandwich the cylindrical portion, and an inner surface of the pair of overhanging portions It has a shape corresponding to the outer peripheral surface, and the elastic member and the support body are sandwiched between a bolt and a female screw inserted into the cylindrical portion in a state where the cylindrical portion is fitted inside the pair of projecting portions. In the floating support structure for floatingly supporting the supported body with respect to the support body, the elastic member has an inner concave portion inside the outer edge of the extended portion, and the plate-like portion is The engaging wall is erected in the thickness direction of the engaging wall. Wherein the serial is in stowed inwards the recess engage in the direction along the plate surface of the extension portion and the plate portion.

  According to the same configuration, the plate-like portion is provided with the engaging wall standing in the thickness direction thereof, and is placed on the outer extension portion and the plate surface of the plate-like portion while being accommodated in the inner recess of the engagement wall. For example, when the supported body with the elastic member attached is transported in the stage before the assembly to the support body, the elastic member is caused to form a pair of overhangs of the supported body by some external force. Even if it is about to fall off between the ends of the part, the engagement wall engages with the extension part and is hooked, so that the elastic member can be prevented from coming off between the ends of the pair of overhanging parts of the supported body. .

  -It has a plate-like portion and a pair of overhang portions provided on the plate-like portion, and the end portions of the pair of overhang portions extend radially outward from both ends of the tube portion and the tube portion. A gap for inserting an elastic member having a pair of outwardly extending portions provided so as to sandwich the plate-like portion, and the inner side surfaces of the pair of overhanging portions The elastic member and the support body have a shape corresponding to the outer peripheral surface of the cylindrical portion, and the bolt and the female screw inserted into the cylindrical portion in a state where the cylindrical portion is fitted inside the pair of projecting portions. The plate-like portion includes a support member that is floatingly supported with respect to the support member, and the extension portion and an engagement wall that engages within the extension portion are provided on the plate-like portion. The engagement wall is erected in the thickness direction, and the engagement wall is the same as the end of the pair of projecting portions in the plate-like portion Characterized in that it is formed in a portion around the inner surface of the projecting portion of the other gap of the pair between.

  According to this configuration, the plate-like portion is provided with the extension portion and the engagement wall that engages within the extension portion in the plate thickness direction of the plate-like portion. For example, the stage before assembly to the support body Even if the elastic member tries to fall off between the ends of the pair of overhanging portions of the supported body due to some external force when carrying the supported body with the elastic member attached thereto, the engagement wall is engaged with the extended portion. Since they are hooked together, the elastic member can be prevented from falling off between the ends of the pair of overhang portions of the supported body.

  In addition, the engagement wall is formed in a part of the periphery of the inner surface of the pair of overhanging portions other than the gap between the ends of the pair of overhanging portions in the plate-like portion. A large space can be provided between the elastic member and the portion, and the vibration damping effect can be enhanced.

  -It has a plate-like portion and a pair of overhang portions provided on the plate-like portion, and the end portions of the pair of overhang portions extend radially outward from both ends of the tube portion and the tube portion. A gap for inserting an elastic member having a pair of outwardly extending portions provided so as to sandwich the plate-like portion, and the inner side surfaces of the pair of overhanging portions The elastic member and the support body have a shape corresponding to the outer peripheral surface of the cylindrical portion, and the bolt and the female screw inserted into the cylindrical portion in a state where the cylindrical portion is fitted inside the pair of projecting portions. The plate-like portion includes a support member that is floatingly supported with respect to the support member, and the extension portion and an engagement wall that engages within the extension portion are provided on the plate-like portion. The engaging wall is formed upright in the thickness direction, and the engaging wall is formed on both surfaces of the plate-like portion, respectively. To.

  According to this configuration, the plate-like portion is provided with the extension portion and the engagement wall that engages within the extension portion in the plate thickness direction of the plate-like portion. For example, the stage before assembly to the support body Even if the elastic member tries to fall off between the ends of the pair of overhanging portions of the supported body due to some external force when carrying the supported body with the elastic member attached thereto, the engagement wall is engaged with the extended portion. Since they are hooked together, the elastic member can be prevented from falling off between the ends of the pair of overhang portions of the supported body.

  In addition, since the engagement walls are formed on both surfaces of the plate-like portion, respectively, the engagement walls are engaged with and hooked on the outer extension portions on both surfaces of the plate-like portion. Omission from between the ends of the overhanging portion is further suppressed.

  DESCRIPTION OF SYMBOLS 16 ... Pivot holder (supported body), 16b, 32a ... Plate-shaped part, 16c ... Open hole, 16d, 21-27 ... Engagement wall, 16e ... Open part, 17 ... Elastic member, 17a ... Cylindrical part, 17b ... Extension part, 20 ... Vehicle body (support body), 31 ... Motor main body (supported body).

Claims (8)

A plate-like portion provided with a pair of overhanging portions, and between the ends of the pair of overhanging portions extending radially outward from both ends of the tube portion and the tube portion so as to sandwich the plate-like portion It is a gap for inserting an elastic member having a pair of extending portions provided in the
A wiper device in which the cylindrical portion of the elastic member is fitted inside the pair of overhang portions,
The elastic member has an inner recess inside the outer edge of the outer extension,
The plate-like portion has an engagement wall standing in the thickness direction thereof, and the extension wall and a direction along the plate surface of the plate-like portion when the engagement wall is housed in the inner recess. A wiper device which is engaged with the wiper device. The wiper device according to claim 1,
The wiper device according to claim 1, wherein the engagement wall is formed around the entire inner surface of the pair of projecting portions other than the gap between the ends of the pair of projecting portions in the plate-like portion. The wiper device according to claim 1,
The wiper device, wherein the engagement wall is formed in a part of the periphery of the inner surface of the pair of projecting portions other than the gap between the ends of the pair of projecting portions in the plate-like portion. . The wiper device according to any one of claims 1 to 3,
The wiper device according to claim 1, wherein the engagement walls are formed on both surfaces of the plate-like portion. The wiper device according to any one of claims 1 to 3,
The wiper device according to claim 1, wherein the engagement wall is formed only on one surface of the plate-like portion. The wiper device according to any one of claims 1 to 5,
The outer extending portion of the elastic member has the inner recess facing the engaging wall provided upright on the plate-like portion, and the plate-like portion is radially outward from the engaging wall. Wiper device characterized by projecting toward the surface. The wiper device according to any one of claims 1 to 6,
A motor,
A wiper link mechanism that converts rotation of the motor into reciprocating rotation of a pivot shaft;
A wiper frame to which the motor and the wiper link mechanism are attached;
The pivot shaft is rotatably supported by a pivot holder integrally connected to the wiper frame,
The wiper device, wherein the pivot holder has the plate-like portion. The wiper device according to any one of claims 1 to 6,
A motor having a motor body and a gear housing;
The wiper device, wherein the motor has the plate-like portion protruding from the gear housing.