JP5596089B2 - Wiper arm - Google Patents

Description

  The present invention relates to a wiper arm in which an arm main body is rotatably connected to an arm head, and more particularly to a wiper arm that can appropriately limit a rotation angle of an arm main body as needed.

  A wiper arm provided in a wiper device is generally composed of an arm head, a retainer that is an arm main body rotatably connected to the arm head, and a return spring disposed between the arm head and the retainer. The

The arm head is a member that constitutes the base end portion of the wiper arm, and is linked to the drive means (drive motor) of the wiper device.

  The retainer is a long holding member that holds the wiper blade. The retainer has a connecting structure with the wiper blade at the distal end portion thereof, and is supported at the base end portion with respect to the arm head via a pivot shaft. Thereby, it is possible to rotate between a use position extending straight from the arm head substantially in the horizontal direction and a standing position standing up with respect to the arm head. With such a configuration, when the wiper device is used, the wiper blade held by the retainer can be disposed along the surface to be wiped (for example, the glass surface of an automobile) by arranging the retainer at the use position. In some cases, the wiper blade held by the retainer can be arranged at a position away from the surface to be wiped by arranging the retainer in the standing position.

  The return spring acts to pull the retainer back to the use position when the retainer is in the vicinity of the use position, and acts to return the retainer to the stand-up position when the retainer is in the vicinity of the stand-up position. As a result, when the wiper device is in use, the return spring acts to pull the retainer back toward the use position, so that the wiper blade held by the wiper arm is pressed against the surface to be wiped with an appropriate pressing force. On the other hand, at the time of car washing or the like, the retainer is placed in the upright position by the spring force of the return spring so that the retainer is kept in the upright position (so-called lockback state).

  By the way, there is a type of a car wash apparatus that performs car washing of an automobile without washing the wiper arm while keeping the retainer in the use position. During car washing by such a car wash device, the cleaning member may come into contact with the wiper blade or the wiper arm and move the retainer from the use position toward the standing position. In this case, if the rotation angle of the moved retainer reaches such an angle that the return spring biases the retainer toward the standing position, the wiper arm is vigorously locked back by the spring force of the return spring. As a result, the wiper arm may be damaged.

  In order to cope with such problems, Japanese Patent Laid-Open No. 2002-362326 proposes a wiper arm provided with a rotation restricting means for restricting the rotation of an arm member (retainer). In the wiper arm of this publication, by providing a stopper wall on the head cover that covers the arm head, the stopper wall interferes with the arm member, and the rotation of the arm member is restricted within a predetermined angle. Yes.

JP 2002-362326 A

  However, in the wiper arm of the above publication, since the stopper wall for restricting the rotation is formed integrally with the head cover, it is necessary to remove the head cover from the arm head when locking the wiper arm. For this reason, when using the wiper arm in a usage environment in which the lockback is performed at the time of car wash or the like, it is necessary to remove the head cover from the arm head every time the lockback is performed, which is troublesome. In addition, in order to avoid such trouble, in a usage environment where lockback is not performed during car washing (for example in the European market), a wiper arm having a head cover with a stopper wall is provided, and a usage environment in which lockback is performed during car washing (for example, In the Japanese market), providing a wiper arm having a head cover having no stopper wall is inefficient because two types of head covers must be prepared for the same type of wiper arm.

  Further, in the above publication, as another embodiment, a wiper arm provided with a cap having a rotation restricting function instead of the head cover is disclosed. In this embodiment, the cap can selectively take an arrangement for limiting the rotation position of the arm member and an arrangement for allowing the arm member to rotate to the standing position. However, if a cap having such a special configuration is used, it is necessary to make a significant configuration change to the wiper arm, resulting in an increase in cost. Further, a wiper arm used in a usage environment in which lockback is performed during car washing does not require a head having such a complicated structure.

  The present invention has been made in view of such problems, and in a wiper arm in which an arm main body is rotatably connected to an arm head, it is necessary to minimize a change from a lockback capable wiper arm. Accordingly, an object of the present invention is to provide a wiper arm that can appropriately limit the rotation angle of the arm body.

In the present invention, a wiper arm having an arm main body capable of holding a wiper blade and an arm head, the arm main body via a pivot shaft so as to be rotatable between a use position and a standing position. In the wiper arm connected to the arm head, a rotation restricting member that can be detachably attached to the arm main body, and provided on the arm head, by contacting the rotation restricting member, e Bei and abutments for limiting the pivot angle of the arm body, said comprising a rotation restricting member is wearable mounting hole, when attachment to the mounting hole, at least a portion of the rotation restricting member, By being arranged outside the mounting hole, it can come into contact with the abutting portion, and the mounting hole has an end on the arm head side of the arm body, and the pivot shaft Building are formed through in the direction, the contact portion is formed at an end portion of the arm body of the arm head.

  The rotation restricting member may be attached to the attachment hole by a snap fit.

  The rotation restricting member includes a base end portion, an elastically deformable arm portion extending from the base end portion, and a tip end portion provided at a tip end of the arm portion, and when mounted in the mounting hole, The proximal end portion and the distal end portion may be disposed outside the mounting hole.

The rotation regulating member, for the arm body may be connected via a connecting member.

According to the present invention, the wiper arm (for example, the wiper arm 1) includes a rotation restricting member (for example, the rotation restricting member 30, 35, 40, 61) that is detachable from the arm body (for example, the retainer 3 ) . Abutting portions (for example, the abutting portions 16 and 62) provided on the arm head (for example, the arm head main body 2 and the head cover 4) , and when the rotation restricting member is not mounted, the arm main body is rotated to the standing position. On the other hand, when the rotation restricting member is mounted, the rotation of the arm main body is restricted within a predetermined angle due to the contact between the rotation restricting member and the contact portion. Therefore, the user of the wiper arm can freely change the function of the wiper arm 1 by attaching and detaching the rotation restricting member according to the use environment. Therefore, the freedom degree and convenience in use of the wiper arm are improved.

  In addition, since the wiper arm with the rotation restricting function can be provided by making a minimum change to the lockable wiper arm, the manufacturing cost can be reduced.

  In addition, for the market where the rotation limit of the retainer is required, while the wiper arm with the rotation restricting member is sold, the market where the rotation angle of the retainer is not required is limited. Since it is also possible to sell a wiper arm without a rotation restricting member, it is possible to manufacture a wiper arm with a rotation restriction and without a rotation restriction without distinction, and the manufacturing cost can be reduced.

  Further, if the rotation restricting member can be attached to and detached from the mounting hole (for example, the mounting hole 26) in a snap-fit manner, the user of the wiper arm can perform the attaching / detaching operation very easily.

  Further, the mounting hole is formed so as to penetrate the base end portion (for example, the base end portion 21) of the arm body in the direction of the pivot shaft (for example, the pivot shaft 14), so that the base end of the rotation restricting member is formed. If the portion (for example, the base end portions 31, 36) and the distal end portion (for example, the distal end portions 33A, 33B, 38) are arranged outside the mounting hole, the rotation restriction by the rotation restriction member is Performed on both sides of the body. Therefore, sufficient strength can be given to the structure for restricting rotation, and reliable rotation can be restricted, and damage to the rotation restricting member can be effectively prevented.

  Further, since the rotation restricting member can be completely hidden inside the head cover (for example, the head cover 4), the wiper arm with the rotation restricting function can be obtained without changing the appearance of the wiper arm at all. Can provide.

It is a sectional side view which shows the wiper arm in the 1st Embodiment of this invention, and is a figure which shows the state which has arrange | positioned the retainer in the use position in the wiper arm which removed the rotation control member. It is a side view which similarly shows a wiper arm, and is a figure which shows the state which has arrange | positioned the retainer in the use position in the wiper arm which removed the rotation control member. It is a sectional side view which similarly shows a wiper arm, and is a figure which shows the state which has arrange | positioned the retainer in the standing position in the wiper arm which removed the rotation control member. It is a side view which similarly shows a wiper arm, and is a figure which shows the state which has arrange | positioned the retainer in the standing position in the wiper arm which removed the rotation control member. It is a top view which similarly shows a part of wiper arm, and is a figure which shows the state which removed the rotation control member. It is a side view which similarly shows a part of wiper arm, and is a figure which shows the state which removed the rotation control member. It is a top view which similarly shows a part of wiper arm, and is a figure which shows the wiper arm of the state by which the rotation control member was mounted | worn. It is a side view which similarly shows a part of wiper arm, and is a figure which shows the wiper arm in the state to which the rotation control member was mounted | worn. It is a side view which similarly shows a wiper arm, and is a figure which shows the state in which rotation of a retainer is controlled by the rotation control member. It is a side view which shows a part of wiper arm similarly, and is a figure which shows the state in which rotation of a retainer is controlled by the rotation control member. It is a side view which similarly shows a rotation control member. It is a perspective view which similarly shows a part of wiper arm, and is a figure which shows a mode that a rotation control member is mounted | worn in a mounting hole. It is a perspective view which similarly shows a part of wiper arm, and is a figure which shows the state by which the rotation control member was mounted | worn with the mounting hole. It is a top view which similarly shows the modification of a rotation control member. It is a perspective view which similarly shows the other modification of a rotation control member. Similarly, it is sectional drawing which shows the state by which the other modification of the rotation control member was mounted | worn with the mounting hole. It is a sectional side view which shows a part of wiper arm in embodiment used as reference of this invention, and is a figure which shows the state which has a retainer in a use position. It is sectional drawing which similarly shows a part of wiper arm, and is a figure which shows the state in which rotation of a retainer is controlled. It is side sectional drawing which similarly shows a head cover. It is a side view which similarly shows an arm head.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
1 to 4 show a wiper arm 1 according to a first embodiment of the present invention. 1 to 4 show the wiper arm 1 in a state where a rotation restricting member 30 described later is removed.

  As shown in the figure, the wiper arm 1 includes an arm head body 2, a retainer 3 rotatably connected to the arm head body 2, a head cover 4 that covers the arm head body 2, and an arm head body 2. And a return spring 5 disposed between the retainers 3. In the present embodiment, the arm head main body 2, the retainer 3, and the head cover 4 are all substantially formed of resin. In the present embodiment, the retainer 3 constitutes an arm body in the scope of claims, and the arm head body 2 and the head cover 4 constitute an arm head in the scope of claims.

  The arm head main body 2 is a member constituting a base end side portion of the wiper arm 1 and includes a head base 11 and a pair of head arm portions 12 extending forward (retainer 3 side) from the head base 11 ( (See FIG. 5). A shaft hole 13 penetrating in the vertical direction is formed in the head base 11, and a wiper arm and drive means (not shown) are connected via a drive shaft (not shown) attached to the shaft hole 13. It is supposed to be linked.

  A pivot shaft 14 for pivotally supporting the retainer 3 is provided between the pair of head arm portions 12. Further, an abutting portion 16 having a surface facing obliquely upward is formed on the upper side of the front end portion of each head arm portion 12. As will be described in detail later, the rotation restricting member 30 (see FIG. 11 and the like) abuts against the abutting portion 16 to prevent the retainer 3 from rotating beyond a predetermined angle. .

  The retainer 3 is a long member constituting a main part of the wiper arm 1, and a base end portion 21 thereof is disposed between the pair of head arm portions 12 of the arm head 11. A pivot shaft hole 22 is formed in the base end portion 21, and the pivot shaft 14 of the arm head body 2 is fitted into the pivot shaft hole 22, so that the retainer 3 is pivoted with respect to the arm head body 2. It is supported. As a result, the retainer 3 has a use position (position shown in FIGS. 1 and 2) extending straight from the arm head body 2 in a substantially horizontal direction, and an upright position (see FIG. 1). 3 and the position shown in FIG. 4).

  A holding recess 24 is provided at the tip 23 of the retainer 3. A wiper blade (not shown) is attached to the holding recess 24 so that the wiper arm 1 holds the wiper blade.

  The return spring 5 is a tension spring, and its base end 5A is locked to the locking pin 15 of the arm head main body 2 and its distal end 5B is locked to the locking portion 25 of the retainer 3. The spring force of the return spring 5 acts to rotate the retainer 3 in the direction of the use position when the retainer 3 is in the vicinity of the use position, while the retainer 3 is in the vicinity of the standing position. Is actuated to rotate in the standing position direction.

  With such a configuration, when the wiper device is used (wiping operation), the retainer 3 is set to the use position so that the wiper blade (not shown) held by the retainer 3 can be wiped (for example, an automobile) Glass surface). In this state, when the wiper blade is pressed against the surface to be wiped and the retainer 3 is slightly rotated, the return spring 5 applies a force in a direction to pull the retainer 3 back to the use position. As a result, the wiper blade held by the distal end portion 23 of the retainer 3 is pressed against the surface to be wiped with an appropriate pressing force according to the spring force of the return spring 5.

  On the other hand, when the car is being washed, when the retainer 3 is placed in the upright position so that the wiper blade held in the retainer 3 is separated from the surface to be wiped, the spring force of the return spring 5 holds the retainer 3 in the upright position. Acts as follows. As a result, the wiper arm 1 is maintained in a state where the retainer 3 is held in the standing position (so-called lockback state).

  As shown in FIGS. 5 and 6, the base end portion 21 of the retainer 3 is provided with a mounting hole 26 for mounting the rotation restricting member 30 (see FIG. 11 and the like). The mounting hole 26 penetrates the base end 21 of the retainer 3 in the lateral direction (that is, the direction in which the pivot shaft 14 extends) at a position close to the front end of the arm head main body 2 (the front end of the head arm 12 on both sides). Is formed. The mounting hole 26 has a square cross section in accordance with the shape of the rotation restricting member 30, and the rotation restricting member 30 attached to the mounting hole 26 contacts the contact portion 16 of the arm head body 2. When contacting, the contact portion 16 and the rotation restricting member 30 are formed to be inclined in an oblique direction so that they face each other straight.

  As shown in FIGS. 7 and 8, a rotation restricting member 30 for restricting the rotation of the retainer 3 can be detachably attached to the attachment hole 26. When the rotation restricting member 30 is attached to the attachment hole 26, as shown in FIGS. 9 and 10, when the retainer 3 rotates by a predetermined angle from the use position toward the standing position, the turn restricting member 30 and the arm head main body. 2 abutment portions 16. Thereby, the further rotation of the retainer 4 is prevented.

  As shown in FIGS. 11 to 13, the rotation restricting member 30 includes a base end portion 31, a pair of leg portions 32 </ b> A and 32 </ b> B extending substantially in parallel from the base end portion 31, and tip ends of the leg portions 32 </ b> A and 32 </ b> B ( End portions 33A and 33B provided at the end opposite to the base end portion 31). The tip portions 33A and 33B are formed only outside the leg portions 32A and 32B, and a gap 35 is formed between the tip portions 33A and 33B.

  The rotation restricting member 30 is formed of an elastic member, and the leg portions 32A and 32B on both sides can be bent in a direction approaching each other. As a result, when the distal end portions 33A and 33B of the rotation restricting member 30 are inserted into one opening of the mounting hole 26 (see FIG. 12), the leg portions 32 on both sides bend, and the distal end portions 33A and 33B. By narrowing the interval 35, the rotation restricting member 30 can be snap-fitted into the mounting hole 26. The tip portions 33A and 33B are formed with a taper for easy insertion into the mounting hole 26.

  When the rotation restricting member 30 is mounted in the mounting hole 26, the leg portions 32A and 32B are disposed in the mounting hole 26, while the base end portion 31 and the distal end portions 33A and 33B are outside the openings on both sides of the mounting hole 26. (Refer to FIG. 7 and FIG. 13). For this reason, the leg portions 32 </ b> A and 32 </ b> B have substantially the same length as the mounting hole 26 of the retainer 3. On the other hand, the proximal end portion 31 and the distal end portions 33A and 33B have a shape projecting laterally from the leg portion 32, and are formed by the width of the proximal end portion 31 and the pair of distal end portions 33A and 33B. Each of the widths is larger than the width of the mounting hole 26.

  With such a configuration, when the rotation restricting member 30 is mounted in the mounting hole 26, the base end portion 31 and the distal end portions 33 </ b> A and 33 </ b> B disposed outside the mounting hole 26 are in contact with the contact portion 16 of the arm head main body 2. And also functions as a locking portion for preventing the rotation restricting member 30 from coming off from the mounting hole 26.

  In this embodiment, the rotation restricting member 30 is a member separated from the other members (the arm head main body 2, the retainer 3, and the arm head 4) of the wiper arm 1, but as a modification, the rotation restricting member 30 is a member. The member 30 may be connected to any of the other members of the wiper arm 1 via, for example, a flexible connecting member. Thereby, when the rotation restricting member 30 is not attached to the attachment hole 26, the loss of the turn restricting member 30 can be effectively prevented.

Next, the operation of the wiper arm 1 of the present embodiment will be described.
When used in an environment where the wiper arm 1 needs to be in the lockback state, the rotation restricting member 30 is removed from the mounting hole 26 of the retainer 3 as shown in FIGS. Accordingly, the rotation operation of the retainer 3 is not particularly limited. Therefore, the retainer 3 is rotated with respect to the arm head main body 2 between the use position shown in FIGS. 1 and 2 and the standing position shown in FIGS. 3 and 4. The wiper arm 1 can be brought into a lockback state as necessary.

  On the other hand, when the wiper arm 1 is used in an operating environment in which the lockback state is to be prevented, the rotation restricting member 30 is fitted into the mounting hole 26 of the retainer 3 by snap fitting, and FIGS. As shown, the rotation restricting member 30 is assumed to be mounted in the mounting hole 26. Thereby, the small rotation of the retainer 3 accompanying use of the wiper device (wiping operation of the surface to be wiped) is allowed, but the rotation of the retainer 3 beyond a predetermined angle is limited.

  That is, as shown in FIG. 8, when the retainer 3 is in the vicinity of the use position, the proximal end portion 31 and the distal end portions 33A and 33B of the rotation restricting member 30 are in contact with the contact portion 16 of the arm head main body 2. Since they are not in contact with each other, a small rotation of the retainer 3 is allowed. Therefore, the retainer 3 can perform an appropriate rotation operation associated with the wiping operation.

  On the other hand, as shown in FIGS. 9 and 10, when the retainer 3 is rotated by a predetermined angle from the use position, the proximal end portion 31 and the distal end portions 33 </ b> A and 33 </ b> B of the rotation restricting member 30 are As a result of the contact with the corresponding contact portion 16, the retainer 3 can no longer rotate. Thereby, the rotation beyond the limit range of the retainer 3 is appropriately prevented, and a situation in which the wiper arm 1 is damaged due to an unintended lockback at the time of car washing or the like is effectively prevented.

  As described above, the wiper arm 1 of the present embodiment includes the rotation restricting member 30 that is detachable with respect to the mounting hole 26 of the retainer 3. Therefore, the rotation restricting according to the use environment in which the wiper arm 1 is used. By attaching and detaching the member 30, the wiper arm 1 can be used as a wiper arm that can be locked back or a wiper arm in which the rotation range of the retainer 3 is limited without changing the other configuration of the wiper arm 1. . Therefore, since the user of the wiper arm 1 can freely change the function of the wiper arm 1 on the user side by attaching and detaching the rotation restricting member 30 according to the use environment, the wiper arm 1 can be freely changed. The degree of freedom and convenience in use of the are improved.

  Further, the wiper arm 1 of the present embodiment can be configured only by providing the mounting hole 26 and providing the rotation restricting member 30 with respect to the wiper arm of the conventional structure, so that the change to the conventional wiper arm is the minimum necessary. The wiper arm 1 having the function of restricting the rotation of the retainer 3 can be provided at a low cost.

  In addition, for a market where the rotation restriction of the retainer 3 is required, the market where the wiper arm 1 provided with the rotation restricting member 30 is sold and the rotation angle restriction of the retainer 3 is not required. On the other hand, since it is also possible to sell the wiper arm 1 without the rotation restricting member 30, it is possible to manufacture a wiper arm with a rotation restriction and without a rotation restriction without distinction. Cost can be reduced.

  Further, since the rotation restricting member 30 can be attached to and detached from the mounting hole 26 in a snap-fit manner, the user of the wiper arm 1 can perform the attaching / detaching operation very easily.

  Further, the rotation restriction by the rotation restriction member 30 is performed on both sides of the retainer 3 by the contact between the base end portion 31 and the distal end portions 33A and 33B of the rotation restriction member 30 and the contact portion 16 of the arm head body 2. As a result, sufficient strength can be imparted to the structure for restricting rotation, and reliable rotation can be restricted, and damage to the rotation restricting member 30 can be effectively prevented.

  Further, since the rotation restricting member 30 can be completely hidden inside the head cover 4 (see FIGS. 1 and 3), the rotation restricting member 30 can be restricted without changing the appearance of the wiper arm 1 at all. A wiper arm 1 with a function can be provided.

  FIG. 14 shows a modification of the rotation restricting member. In this modification, the rotation restricting member 35 includes a base portion 36 and a pair of leg portions 37A and 37B extending from the base portion 26. However, the distal end portion 38 is provided only on one leg portion 37A, and the other side. The arm portion 37B is not provided. With such a configuration, when the rotation restricting member 30 is inserted into the mounting hole 26, the leg portion 37A can be greatly bent, and the mounting work is further facilitated.

  15 and 16 show another modification of the rotation restricting member. In this modification, the rotation restricting member 40 is a hollow frame-shaped member made of an elastic material, and has wide end portions 41 and 42 and an intermediate portion 43 between the end portions 41 and 42. And.

  The end portions 41 and 42 are constituted by a frame surrounding a substantially rectangular hollow portion. The intermediate portion 43 is composed of a pair of plate members extending integrally from the end portions 41 and 42 on both sides, and the end portion 41 and 42 and the intermediate portion 43 are continuous hollow portions in which the intermediate portion 43 portion is narrow. A portion 44 is formed. Furthermore, the corners 41A and 42A outside the end portions 41 and 42 are chamfered, and mounting in the mounting hole 46 is facilitated. In the present embodiment, the end portions 41 and 42 have the same shape and dimensions, and the rotation restricting member 40 has a symmetrical shape.

  On the other hand, the mounting hole 46 of the base end portion 21 of the retainer 3 is formed in a width between the wide portions 47 and 48 formed in the opening portions on both sides according to the shape of the rotation restricting member 40 and the width between the wide portions 47 and 48. And a narrow portion 49. The widths of the wide portions 47 and 48 are substantially equal to the widths of the end portions 41 and 42 of the rotation restricting member 40, and the vertical and horizontal widths and lengths of the narrow portion 49 are rotated. It almost coincides with the width and length of the intermediate portion 43 of the restricting member 40. On the other hand, the lengths of the wide portions 47 and 48 are shorter than the lengths of the end portions 41 and 42.

  With such a configuration, when the rotation restricting member 40 is used, one of the end portions 41 and 42 of the rotation restricting member 40 is inserted into the mounting hole 46 from one of the wide portions 47 and 48. In this case, since the end portion 41 or 42 of the rotation restricting member 40 is elastically deformed toward the hollow portion 44 and passes through the narrow portion 49 of the attachment hole 46, the rotation restricting member 40 into the attachment hole 46 is Mounting can be performed easily.

  Thus, when the rotation restricting member 40 is mounted in the mounting hole 46, a part of the end portions 41, 42 of the rotation restricting member 40 protrudes outside the mounting hole 46. The protruding portions of the end portions 41 and 42 come into contact with the contact portion 16 of the arm head main body 2 so that the rotation of the retainer 3 is restricted.

17 to 20 show a wiper arm 51 according to an embodiment which is a reference of the present invention.
The wiper arm 51 of the present embodiment is characterized in that the rotation restricting member 61 is detachable from the head cover 54, and a contact portion 62 that contacts the turn restricting member 61 is provided in the retainer 53. is there.

  More specifically, the wiper arm 51 is provided between the arm head 52, a retainer 53 rotatably connected to the arm head 52, a head cover 54 covering the arm head 52, and the arm head 52 and the retainer 53. The return spring 55 is provided.

  As shown in FIG. 19, the head cover 54 is a box-shaped member having a hollow portion for accommodating the arm head 52. A pin-type rotation restricting member 61 is detachably attached to both side walls 54A of the head cover 54 (only one side surface is shown in FIG. 19). Thereby, the rotation restricting member 61 is arranged inside the head cover 54 in a state of being spanned between the side walls 54A. The rotation restricting member 61 is attached and detached by inserting the pin-type turn restricting member 61 into a mounting hole formed in the side wall 54A of the head cover 54, for example.

  As shown in FIG. 20, V-shaped grooves 52 </ b> B are formed at the upper ends of the head arm portions 52 </ b> A on both sides of the arm head 52. Thus, when the head cover 54 is attached to the arm head 52, the rotation restricting member 61 is disposed in the V-shaped groove 52B. As a result, the central portion of the rotation restricting member 61 is arranged between the head arm portions 52A.

  As shown in FIGS. 17 and 18, the rear end of the base end portion 53 </ b> A of the retainer 53 is provided with an abutting portion 62 that can abut on the rotation restricting member 61. Thus, as shown in FIG. 18, when the retainer 53 rotates to a predetermined angle, the contact portion 62 comes into contact with the portion disposed between the head arm portions 52A of the rotation restricting member 61, and Further rotation of the retainer 53 is restricted.

  Thus, also in this embodiment, the rotation of the retainer 53 can be restricted within an appropriate range by the detachable rotation restricting member 61. Therefore, the user of the wiper arm 51 can freely change the function of the wiper arm (whether or not rotation is restricted) according to the usage environment.

  In the above embodiments, specific rotation restricting members 30, 35, and 61 have been exemplified. However, these illustrations are only examples of the rotation restricting members, and the rotation according to the present invention. The restriction member is not limited. That is, the rotation restricting member may be of any form as long as it is detachable from any member of the wiper arm. For example, instead of the rotation restricting member 30 of the first embodiment, a bolt and a nut are used, and the bolt is attached to a bolt hole penetrating the base end portion 21 of the retainer 3 in the lateral direction. The rotation of the retainer 3 may be restricted so that the head and the nut of the nut abut against the abutting portion 16.

  The rotation restricting member can be detachable from the arm head body. In this case, the contact portion may be provided on the retainer.

DESCRIPTION OF SYMBOLS 1 Wiper arm 2 Arm head main body 3 Retainer 4 Head cover 5 Return spring 11 Head base part 12 Head arm part 13 Shaft hole 14 Pivot shaft 15 Locking pin 16 Contact part 21 Retainer base end part 22 Pivot shaft hole 23 Retainer front end part 24 Holding recess 25 Locking portion 26 Mounting hole 30 Rotation restricting member 31 Base end portions 32A and 33B of the rotation restricting member Leg portions 33A and 33B of the rotation restricting member Front end portion 35 of the rotation restricting member Rotation restricting member 36 Base end portions 37A and 37B of the rotation restricting member Leg portion 38 of the rotation restricting member Front end portion 40 of the rotation restricting member Turn restricting member 41 End portion 42 of the turn restricting member End portion 43 of the turn restricting member Intermediate portion 44 of the restricting member Hollow portion 46 of the rotation restricting member 46 Mounting hole 47 Wide portion of the mounting hole 48 Wide portion of the mounting hole 49 Narrow portion of the mounting hole 51 Wiper arm 52 Arm Head 52A Head arm portion 52B V-shaped groove 53 Retainer 54 Head cover 54A Head cover side wall 55 Return spring 61 Rotation restricting member 62 Contact portion

Claims (4)

A wiper arm comprising an arm body capable of holding a wiper blade and an arm head, wherein the arm body is pivotable between a use position and a standing position via a pivot shaft. In the wiper arm connected to
A rotation restricting member detachably attachable to the arm body ;
Wherein provided on the arm head, e Bei and abutments for limiting the pivot angle of the arm body by contact with the rotation restricting member,
The rotation restricting member is provided with a mounting hole, and at the time of mounting in the mounting hole, at least a part of the rotation restricting member is disposed outside the mounting hole, It is possible to contact,
The mounting hole is formed so as to penetrate an end of the arm main body on the arm head side in a direction in which the pivot shaft extends, and the contact portion is an end of the arm head on the arm main body side. The wiper arm is formed on The wiper arm according to claim 1 , wherein the rotation restricting member is attached to the attachment hole by a snap fit. The rotation restricting member includes a base end portion, an elastically deformable arm portion extending from the base end portion, and a tip end portion provided at a tip end of the arm portion, and when mounted in the mounting hole, The wiper arm according to claim 2 , wherein the base end portion and the tip end portion are disposed outside the mounting hole. The rotation regulating member, for the arm body, the wiper arm according to any one of claims 1 to 3 which is connected via a connecting member.

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