JP5426146B2 - Wiper device - Google Patents

Description

The present invention relates to a wiper device .

  BACKGROUND ART A vehicle wiper device includes a wiper blade that wipes a surface to be wiped such as a window glass, a wiper arm that is connected to the wiper blade, and a drive motor that rotates the wiper arm. The wiper arm reciprocates on the surface to be wiped by rotating the wiper arm in the forward / reverse direction (reciprocating motion) by the drive motor, and wipes the surface to be wiped by its blade rubber. doing.

  In such a wiper device, in order to press the wiper blade against the surface to be wiped, a tension spring as an urging member is attached to a wiper arm that holds the wiper blade. In general, a wiper arm includes a retainer coupled to a wiper blade via an arm piece and an arm head coupled to the retainer so as to be rotatable. The tension spring has one end attached to the arm head and the other end attached to the retainer, thereby urging the retainer with respect to the arm head in the rotation direction, and a wiper blade connected to the arm piece. In addition, a pressing force to the surface to be wiped is generated.

As the attachment of the tension spring to the arm head, particularly the other end is usually attached by hooking the hook of the tension spring to a rivet inserted between the side plates of the retainer (for example, patents). Reference 1).
JP 2008-1191 A

By the way, in recent years, there is a tendency that the design of a vehicle is regarded as important, and a high design of a wiper device, especially a wiper arm exposed to the outside, has been required.
However, in the conventional wiper arm described above, since the rivet is inserted between the side plates of the retainer, the head of the rivet is exposed on the side plate surface, and the appearance design is deteriorated.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wiper arm having improved appearance design and a wiper device including the wiper arm.

In the wiper apparatus of the present invention, a wiper blade, and a retainer coupled to said wiper blade through an arm piece, and an arm head being rotatably connected to said retainer, one end attached to the arm head, A tension spring that urges the retainer in the rotational direction with respect to the arm head by attaching the other end to the retainer, and generates a pressing force to the wiped surface on the wiper blade. a wiper arm comprising Te, and a driving means for rotating said wiper arm, wherein the retainer includes a top plate composed of a pair of side plates depending from both side ends of the top plate, between the pair of the side plates opposing in, the tension accommodating portion for accommodating a spring is provided, only one of the side plates of said retainer, the tension locking portion for mounting the other end of the spring Spring mounting portion is provided in a cantilever state with the spring mounting portion includes a first bent pieces bent substantially at right angles to the housing part side from the lower edge of the side plate, the first bending A second bent portion that is bent and extended into the housing portion so that an inclination angle θ satisfies 0 ° <θ <90 ° with respect to the first bent piece from a side edge portion on the arm head side of the piece. And a locking portion formed of a through-hole formed in the second bent piece, and the locking portion is arranged so that the tension spring is accommodated in the accommodating portion of the retainer, The lower edge of one side plate of the retainer is provided with notches on both sides of the first bent piece forming portion, and the other end of the tension spring is formed in a hook shape. By hooking the other end of the hook shape to the locking portion of the spring mounting portion from the outside of the housing portion, The tension spring is housed in the container.

According to this wiper device , the first bent piece bent from the lower edge of one side plate of the retainer and the second bent piece bent from the first bent piece are used to Since the spring mounting portion for mounting the other end portion is formed, the conventional rivet becomes unnecessary, and therefore, the inconvenience that the head portion is exposed and the appearance design is impaired is avoided.
Moreover, it becomes possible to attach a tension spring more easily by adjusting suitably the bending angle of the 2nd bending piece with respect to the 1st bending piece beforehand.
Furthermore, when the wiper arm is viewed from the side, the tension spring is not exposed to the outside of the retainer housing portion, that is, outside the lower edge of the side plate, and is housed in the retainer housing portion.
And while the bending process about a 1st bending piece becomes easy, also about the 2nd bending piece bent from this 1st bending piece, it bends easily so that the latching | locking part may become a desired position. Can be processed.
In addition, when the first bent piece is bent, notches are provided on both sides of the place where the first bent piece is formed, so that the side plate in the vicinity of the first bent piece is bent together with the first bent piece. Is prevented.
Furthermore, the other end portion of the tension spring can be easily locked to the locking portion simply by hooking the hook serving as the other end portion of the tension spring into the through hole.

In the wiper device , it is preferable that an inclination angle θ of the second bent piece with respect to the first bent piece is set to θ = 45 ° .

The wiper device of the present invention is excellent with high design properties.

The present invention will be described in detail below.
First, a wiper device according to the present invention will be described. As shown in FIG. 1, the wiper device 10 is attached to wipe off rain attached to the front window glass 12 of the vehicle 11, splashes from the front vehicle, etc., and ensure the driver's field of view.

  The wiper device 10 is provided with two wiper arms 14 on the driver's seat side and the passenger seat side, and each wiper arm 14 swings on a wiper shaft 15 provided below the front window glass 12 (vehicle front side). It is supported freely. A wiper motor (driving means) 17 is connected to the wiper shaft 15 via a link mechanism 16. Under such a configuration, the wiper arm 14 is swung (rotated) within a predetermined range about the wiper shaft 15 by the link mechanism 16 when the wiper motor 17 is driven.

  In addition, wiper blades 18 are attached to the wiper arm 14 at the tip opposite to the side where the wiper shaft 15 is supported. The wiper blade 18 is urged toward the front window glass 12 by an urging force of a tension spring (not shown) attached to the wiper arm 14 so as to be in contact with the front window glass 12 while being bent while exhibiting a predetermined pressing force. It has become.

  Under such a configuration, the wiper device 10 swings the wiper arm 14 to swing the wiper blade 18 to the wiping range 12a between the upper inversion position P1 and the lower inversion position P2 on the front window glass 12. The front window glass 12 is wiped by moving (turning).

Next, the wiper arm 14 according to an embodiment of the present invention will be described.
As shown in FIG. 2, the wiper arm 14 includes an arm head 20 attached to the wiper shaft 15, a retainer 21 rotatably connected to the arm head 20, and a wiper provided on the distal end side of the retainer 21. And an arm piece 22 for mounting the blade 18. Further, as shown in FIG. 3, the arm head 20 is provided with a wiper shaft 15 on the lower surface (bottom surface) side thereof, and a retainer 21 is rotatably connected to the side opposite to the wiper shaft 15. The rotating shaft 23 is held.

  As shown in FIG. 2, the retainer 21 includes an upper plate 21a and a pair of side plates 21b and 21b that hang down from both side ends of the upper plate 21a. As shown in FIG. 3, a holding hole (not shown) for holding the rotating shaft 23 is formed on the arm head 20 side of the pair of side plates 21b and 21b facing each other. The arm head 20 is rotatably connected. That is, the retainer 21 is connected to the window glass 12 so as to be rotatable in a direction of approaching and separating.

  Further, the retainer 21 accommodates a tension spring 24 in a space between the pair of side plates 21b and 21b, that is, a space surrounded by the side plates 21b and 21b and the upper plate 21a. Therefore, this space is the accommodating portion 25 in the present invention. The tension spring 24 is for causing the wiper blade 18 to exert a pressing force as described above, and its hook-shaped one end 24a is attached to the arm head 20 via the hook-shaped hooking member 26, and is similarly hook-shaped. The other end 24b is attached to the retainer 21.

  The hook member 26 is configured such that one end side is hooked in an attachment hole 20a formed in the arm head 20 and one end portion 24a of the tension spring 24 is hooked on the other end side. In the present embodiment, the one end 24a of the tension spring 24 is indirectly attached to the arm head 20 via the hook member 26, but the arm head 20 is directly attached without using such a hook member 26. You may make it attach. That is, in the present invention, the one end 24 a of the tension spring 24 may be directly attached to the arm head 20, or may be indirectly attached via a member such as the hook member 26.

The other end portion 24 b of the tension spring 24 is hooked on a locking portion 28 formed of a through hole of a spring mounting portion 27 formed on the retainer 21, and is locked and attached thereto.
The spring mounting portion 27 includes a first bent piece 29 that is bent from the lower end edge portion of one side plate 21b toward the housing portion 25, and a side edge portion of the first bent piece 29 on the arm head 20 side. A second bent piece 30 that intersects with the bending direction of the first bent piece 29 and extends into the accommodating portion 25, and the locking portion 28 provided on the second bent piece 30. , Is composed of.

  That is, the spring mounting portion 27 is formed by bending a substantially L-shaped plate piece extending from the lower edge of one side plate 21b in two stages. The first bent piece 29 that is bent from the side plate 21b is bent at a substantially right angle (a range that includes an error with respect to the right angle) with respect to the side plate 21b, whereby the first bent piece 29 is The folding process is easy. In addition, the notch part 31 is formed in the both ends of the formation location of the 1st bending piece 29 in the lower end edge part of this side plate 21b, respectively. As a result, the side plate 21 b is prevented from being bent together with the first bent piece 29 in the vicinity of the portion where the first bent piece 29 is formed when the first bent piece 29 is bent. ing.

  And the 2nd bending piece 30 is the predetermined angle designed beforehand with respect to this 1st bending piece 29, as shown in FIG. 4 which is an AA arrow line view of FIG. 3, this embodiment. Then, it is bent in the accommodating portion 25 at an inclination angle of 45 °. Under such a configuration, the second folded piece 30 has its bending direction with respect to the first bent piece 29 intersected with the direction in which the first bent piece 29 is bent with respect to the side plate 21b. It has become. Therefore, the through-hole (engagement part 28) formed in this 2nd bending piece 30 is formed toward the arm head 20 side and the side plate 21b and the open side of 21b.

  Therefore, the other end 24b of the hook shape of the tension spring 24 is easily hooked into the through hole (the locking portion 28). That is, after one end portion 24a of the tension spring 24 is hooked on the hook member 26, the other end portion 24b is put into the opening between the side plates 21b and 21b from the outside of the housing portion 25 in that state, and the through hole (locking) Part 28) and can be operated very easily. Alternatively, the other end 24b may first be hooked on the through hole (the locking portion 28), and then the one end 24a may be hooked on the hook member 26. In this case, the tension spring 24 can be attached sufficiently easily. It can be carried out.

  In addition, about the bending angle of the 2nd bending piece 30 with respect to the 1st bending piece 29, ie, an inclination angle, it can be bent at the arbitrary angles as designed previously. Therefore, by adjusting the bending angle, the position of the through hole (locking portion 28) in the housing portion 25 can also be defined, whereby the housing of the other end portion 24b of the tension spring 24 is accommodated. The position in the part 25 can also be adjusted.

  Therefore, in the present embodiment, as shown in FIG. 4, the position of the through hole (locking portion 28) in the accommodating portion 25 is arranged so that the tension spring 24 is accommodated in the accommodating portion 25 of the retainer 21. Yes. That is, when the position of the through hole (locking portion 28) in the accommodating portion 25 determined by the bending angle of the second bent piece 30 is the other end portion 24b of the tension spring 24 is positioned here, As shown in FIG. 2, the tension spring 24 is formed so that the outer periphery thereof is positioned on the side of the accommodating portion 25 from the lower end edge of the side plate 21 b without protruding outward from the opening of the accommodating portion 25.

  In the wiper arm 14 having such a configuration, a substantially L-shaped plate piece formed by extending from the lower edge of the side plate 21b of the retainer 21 is bent in two stages. Since the spring mounting portion 27 for mounting the other end portion 24b of the tension spring 24 is formed, the conventional rivet is not required, and therefore the inconvenience that the head portion is exposed and the appearance design is impaired is avoided. , Design properties can be improved. Further, since rivets are not required and no other member is used in place of the rivets, the number of parts can be reduced as compared with the conventional case, and therefore inventory management and the like can be facilitated. .

  In addition, since the bending angle (inclination angle) of the second bent piece 30 with respect to the first bent piece 29 can be bent at an arbitrary angle as designed in advance, the wiper arm model and the wiper device 10 can be bent. It is possible to easily cope with various types such as a model of a vehicle to which the is attached by changing only the bending angle without changing the basic design.

Further, since the through-hole (locking portion 28) is arranged so that the tension spring 24 is accommodated in the accommodating portion 25 of the retainer 21, the tension spring is formed outside the retainer 21 when the wiper arm 14 is viewed from the side. 24 is not exposed, and therefore the appearance design of the wiper arm 14 is further improved.
Further, in the wiper device 10 provided with such a wiper arm 14, since the wiper device 14 having a high appearance design is provided, the wiper device 10 itself has a high design. It will be excellent.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. That is, the specific shape, configuration, and the like given in this embodiment are merely examples, and can be changed as appropriate.
For example, in the above-described embodiment, the bending angle of the first bent piece 29 bent from the side plate 21b is substantially perpendicular to the side plate 21b, but the present invention is not limited to this, and the first folding piece 29 The bent piece 29 may be bent at an angle (obtuse angle) exceeding 90 ° with respect to the side plate 21b so that the bent piece 29 is not exposed to the outside of the accommodating portion 25 and is accommodated in the accommodating portion 25.

  In addition, the locking portion for attaching the other end 24b of the tension spring 24 is constituted by, for example, a notch or a hooked portion obtained by further bending a notch instead of forming it by a through hole. May be.

It is explanatory drawing which shows a part of vehicle provided with the wiper apparatus which concerns on this invention. It is a side view which shows one Embodiment of the wiper arm of this invention. FIG. 3 is a bottom view of the wiper arm shown in FIG. 2. It is an AA arrow directional view of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Wiper apparatus, 11 ... Vehicle, 12 ... Front window glass (window glass), 14 ... Wiper arm, 17 ... Wiper motor (drive means), 18 ... Wiper blade, 20 ... Arm head, 21 ... Retainer, 21b ... Side plate, 22 ... arm piece, 24 ... tension spring, 24a ... one end, 24b ... other end, 25 ... housing part, 27 ... spring mounting part, 28 ... locking part, 29 ... first bent part, 30 ... second fold Curve, 31 ... Notch

Claims (2)

Wiper blades,
A retainer coupled to the wiper blade via an arm piece;
An arm head rotatably connected to the retainer;
One end portion is attached to the arm head and the other end portion is attached to the retainer, so that the retainer is urged toward the rotation direction with respect to the arm head, and the wiper blade is pushed against the surface to be wiped. A wiper arm comprising: a tension spring that generates pressure;
Driving means for rotating the wiper arm,
The retainer is composed of an upper plate and a pair of side plates depending from both side ends of the upper plate, and an accommodating portion for accommodating the tension spring is provided between the pair of opposing side plates.
Only one side plate of the retainer is provided with a spring mounting portion having a locking portion for mounting the other end portion of the tension spring in a cantilever state,
The spring mounting portion is
A first bent piece that bends substantially perpendicularly from the lower end edge of the one side plate to the accommodating portion side;
An inclination angle θ is 0 ° <θ <90 ° with respect to the first bent piece from a side edge portion on the arm head side of the first bent piece.
A second bent piece that bends and extends into the housing portion to satisfy
The locking portion comprising a through hole formed in the second bent piece,
The locking portion is arranged so that the tension spring is housed in the retaining portion of the retainer,
The lower end edge of one side plate of the retainer is provided with a notch on both sides of the first bent piece forming portion,
The other end portion of the tension spring is formed in a hook shape, and the other end portion of the hook shape is hooked on the locking portion of the spring mounting portion from the outside of the housing portion, thereby the inside of the housing portion. A wiper device characterized by containing a tension spring. The inclination angle θ of the second bent piece with respect to the first bent piece is
θ = 45 °
The wiper device according to claim 1, wherein the wiper device is set as follows.

Images