JP2010083183A - Wiper device and connecting member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a wiper device and a connecting member which prevent a wiper arm and a wiper blade from being separated. <P>SOLUTION: A coupling means 15, which couples the wiper arm 3 and the wiper blade 4, is provided slidably in the directions of being inserted into and removed from one end part 3f of the wiper arm 3 and has a cover member 6, which restrains the engagement of engagement parts 3c, 5c between the one end part 3f of the wiper arm 3 and the coupling means 15 from being released. This cover 6 is structured to restrain the engagement between the one end part 3f of the wiper arm 3 and the connecting means 15 from being released when the wiper device 1 is used. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wiper device used for wiping a surface to be wiped such as a window of a vehicle, and a connecting member for connecting a wiper arm and a wiper blade.

  Conventionally, as a wiper device, an arm connecting portion is attached to a blade fitting to which a blade is attached, an elastic plate is attached to a mounting portion of the arm connecting portion, and an arm connecting end is inserted against the elasticity of the elastic plate. Thus, there is known one in which an arm is attached to a blade fitting (see, for example, Patent Document 1).

In this patent document 1, the engagement protrusion provided at the connection end of the arm is engaged with the engagement hole provided in the elastic plate, thereby preventing the arm from being detached.
Japanese Utility Model Publication No. 63-50206

  However, in the configuration in which the wiper arm and the wiper blade are connected by engaging the engaging protrusion with the engaging hole as in the above-described prior art, the engaging portion is engaged when any force is applied to the connecting portion by a car wash or the like. There is a possibility that the engagement between the protrusion and the engagement hole is released, and the wiper arm and the wiper blade are detached.

  Then, an object of this invention is to obtain the wiper apparatus and connection member which can suppress that a wiper arm and a wiper blade remove | deviate.

  The invention according to claim 1 is a wiper device comprising: a wiper arm portion that is swingable about a drive shaft; and a wiper blade portion that is detachably attached to the wiper arm portion via a connecting means. One end of the wiper arm portion and the connecting means each include an engaging portion that engages with each other when one of the one end of the wiper arm portion and the connecting means is inserted into the other. A cover member is provided so as to be slidable in an insertion / removal direction of the one end portion of the wiper arm portion or the connecting means, and restricts disengagement of the engagement portion.

  The invention according to claim 2 is the wiper device according to claim 1, wherein the connecting means is a connecting member formed of a member different from the wiper blade portion.

  Invention of Claim 3 is the wiper apparatus of Claim 2, Comprising: The said cover member is a top wall part, and the side wall part each extended from the both-sides edge part of the said top wall part. A fitting portion that fits to each other is provided on the inside of the front end portion of the both side wall portions and the connecting member, and the top wall portion is directed to the extending direction of the side wall portion on the top wall portion. By providing a pressing member to be pressed and pressing the pressing member in the extending direction, the front end portions of the both side wall portions are expanded in a direction away from each other, and the both side wall portions and the connecting member are fitted to each other. It is characterized in that the match is canceled.

  According to a fourth aspect of the invention, there is provided the wiper device according to the third aspect, wherein the connecting member is provided with an elastically swingable tongue piece portion, and the engaging portion is the wiper arm. An engagement hole provided at one end of the portion, and an engagement protrusion provided in the tongue piece portion and elastically engaged with the engagement hole. A tongue piece cover portion is provided, which covers the tip of the tongue piece portion in a state in which disengagement of the engagement portion is restricted and contacts the tip of the tongue piece portion.

  A fifth aspect of the present invention is the wiper device according to the first aspect, wherein the connecting means is provided integrally with the wiper blade portion.

  According to a sixth aspect of the present invention, there is provided a connecting portion having an engaging portion for inserting and engaging one end portion of a wiper arm portion swingably provided about a drive shaft, and the connecting portion. An attachment portion for attaching a wiper blade portion for wiping the surface to be wiped, and a sliding portion provided in the connecting portion so as to be slidable in an insertion / removal direction of one end portion of the wiper arm portion, and restricting disengagement of the engagement portion And a cover member.

  The invention according to claim 7 is the connecting member according to claim 6, wherein the cover member includes a top wall portion and side wall portions respectively extending from both side end portions of the top wall portion. A fitting portion that fits to each other is provided on the inner side of the front end portion of the both side wall portions and the connecting portion, and the top wall portion is pressed toward the extending direction of the side wall portion on the top wall portion. By providing a pressing member and pressing the pressing member in the extending direction, the distal end portions of the side wall portions are expanded in a direction away from each other, and the fitting between the side wall portions and the connecting portion is performed. It is characterized by being released.

  According to an eighth aspect of the present invention, in the connecting member according to the seventh aspect, the connecting portion is provided with an elastically swingable tongue piece portion, and the engaging portion is the tongue piece. An engagement protrusion that is elastically engaged with an engagement hole provided at one end of the wiper arm, and the cover member is configured to restrict disengagement of the engagement. And a tongue piece cover portion that covers the tip of the tongue piece and abuts against the tip of the tongue piece.

  According to the first aspect of the present invention, the connecting means for connecting the wiper arm portion and the wiper blade portion is provided so as to be slidable in one end portion of the wiper arm portion or in the insertion / removal direction of the connecting means, and the one end portion of the wiper arm portion and the connecting means. Since the cover member for restricting the disengagement of the engagement portion with the cover member is provided, the engagement of the engagement portion between the one end portion of the wiper arm portion and the connecting means is released by the cover member when the wiper device is used. Can be regulated. As a result, it is possible to prevent the wiper arm portion and the wiper blade portion from being detached.

  According to the second aspect of the present invention, the connecting member is a connecting member formed of a member different from the wiper blade part, so that the connecting member can be used as an attachment device for the wiper blade part. As a result, it is not necessary to use a wiper blade portion that matches a different wiper arm attachment structure for each type of automobile, and the versatility of the wiper blade portion can be enhanced.

  According to the invention of claim 3, by providing the pressing member on the top wall portion of the cover member and pressing the pressing member toward the extending direction of the both side wall portions, the front end portions of the both side wall portions are separated from each other. Since the fitting between the side wall portions and the connecting member is released by expanding in the direction, the both side wall portions and the connecting member are fitted to each other and slide-controlled by simply pressing the pressing member. The cover member can be easily slid in one end portion of the wiper arm portion or in the insertion / removal direction of the connecting means.

  According to the invention of claim 4, the engaging portion is provided in the engaging hole provided in the one end portion of the wiper arm portion and the tongue piece portion of the connecting member, and is engaged with the engaging hole elastically. The wiper arm is formed by providing a tongue piece cover portion that includes a protrusion and covers the tip of the tongue piece in a state of restricting the engagement portion from being released and contacts the tip of the tongue piece. When the engagement hole and the engagement protrusion are not properly engaged when the one end of the part is connected to the connection member, the tip of the tongue piece part disturbs the slide of the cover member, and the tongue piece The cover part cannot cover the tip of the tongue piece part. Therefore, the connection member is covered with the cover member in a state where the engagement hole and the engagement protrusion are not properly engaged, that is, in a state where the connection between the one end of the wiper arm portion and the connection member is incomplete. Can be suppressed.

  According to the invention of claim 5, since the connecting means is provided integrally with the wiper blade portion, it is possible to prevent the wiper arm portion and the wiper blade portion from being detached, and to simplify the configuration. A wiper device can be obtained.

  According to the sixth aspect of the present invention, there is provided a connecting portion having an engaging portion that engages by inserting one end portion of a wiper arm portion that is swingably provided around the drive shaft, and is provided on the connecting portion, and is a surface to be wiped. A connecting member for attaching a wiper blade part for wiping off a cover member, and a cover member provided on the connecting part so as to be slidable in the insertion / removal direction of one end of the wiper arm part, and restricting disengagement of the engaging part; By doing so, the said connection member can be used as an attachment apparatus which can suppress that a wiper arm part and a wiper blade part remove | deviate.

  According to the invention of claim 7, by providing the pressing member on the top wall portion of the cover member and pressing the pressing member toward the extending direction of the both side wall portions, the front end portions of the both side wall portions are separated from each other. Since the fitting between the both side wall portions and the connecting portion is released by expanding in the direction, the both side wall portions and the connecting portion are fitted to each other and slide-controlled by simply pressing the pressing member. This cover member can be easily slid in the insertion / removal direction of one end of the wiper arm.

  According to the eighth aspect of the present invention, the engagement portion is provided on the tongue piece portion of the coupling portion, and is an engagement protrusion that elastically engages with an engagement hole provided in one end portion of the wiper arm portion, and the cover The member is provided with a tongue piece cover portion that covers the tip of the tongue piece portion in a state of restricting the disengagement of the engaging portion and abuts against the tip of the tongue piece portion, so that one end portion of the wiper arm portion and the connecting portion are provided. When the engagement hole and the engagement protrusion are not properly engaged when connecting the cover member, the slide of the cover member is obstructed by the tip of the tongue piece, and the tongue piece cover is the tip of the tongue piece. Cannot be covered. For this reason, the connection portion is covered with the cover member in a state where the engagement hole and the engagement protrusion are not properly engaged, that is, in a state where the connection between the one end portion of the wiper arm portion and the connection portion is incomplete. Can be suppressed.

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

  FIG. 1 is a plan view showing the appearance of the wiper device according to the present embodiment, FIG. 2 is a side view showing the appearance of the wiper device, and FIG. 3 is a perspective view showing the state of the connecting member before connecting the wiper arm portions. 4 is a plan view showing a state of the connecting member before connecting the wiper arm portion, FIG. 5 is a sectional view taken along the line AA in FIG. 4, and FIG. 6 is a state of the connecting member when the wiper arm portion is connected. FIG. 7 is a plan view showing a state of the connecting member when the wiper arm portion is connected, FIG. 8 is a sectional view taken along line BB of FIG. 7, and FIG. 9 is an engagement of the wiper arm portion and the connecting member. FIG. 10 is a plan view showing a state in which the engagement portion between the wiper arm portion and the connecting member is covered with a cover member, and FIG. 11 is a cross-sectional view taken along the line CC in FIG. FIG. 12 and FIG. 12 are cross sections showing a state in which the connecting member and the cover member are engaged. 13 is a cross sectional view showing the engagement between the coupling member and the cover member is released.

  A wiper device 1 according to the present embodiment is detachably attached to a wiper arm portion 3 rotatably supported on a vehicle body (not shown) of a vehicle such as an automobile, and a front end portion 3f of the wiper arm portion 3. A wiper blade portion 4 for wiping a surface to be wiped (not shown), and a connecting member 15 as a connecting means for detachably connecting the wiper arm portion 3 and the wiper blade portion 4. Thus, in this embodiment, the connection member 15 comprised with the member different from the wiper blade part 4 is used as a connection means.

  The wiper blade portion 4 includes a primary lever 9, secondary levers 10 and 10 that are rotatably supported at both ends of the primary lever 9, and a center that can be rotated at one end of the secondary lever 10 and 10. Yokes 11 and 11 supported on the other end of the secondary levers 10 and 10 and a vertebra 12 held over both ends of the yokes 11 and 11, and a blade 13 fixed to the vertebra 12. It is a so-called tournament type.

  A through hole (not shown) is provided in the central portion of the primary lever 9 in the longitudinal direction, and a U-shaped hook 7a (to be described later) can be supported by inserting the shaft 14 into the through hole. ing.

  And the wiper apparatus 1 is rock | fluctuated centering | focusing on the rotating shaft (drive shaft) 2 substantially orthogonal to the wiping object surface by the motor (not shown) with which the vehicle body side was equipped. In such a configuration, when the motor is controlled to swing, the wiping target surface is repeatedly slid along an arc-shaped track while the vertebra 12 is pressed with an appropriate pressing force, and the wiping target surface is wiped. .

  The front end portion (one end portion) 3f of the wiper arm portion 3 is formed in a substantially U shape by the top wall portion 3b and the both side wall portions 3a and 3a, and the top wall portion 3b has an engagement hole (engagement portion). ) 3c is provided.

  In addition, although the front-end | tip part 3f of the wiper arm part 3 shown in FIG. 3 is provided with the 1st tongue piece part 3d and the 2nd tongue piece part 3e in two places back and forth (insertion / removal direction: the left-right direction of FIG. 4). The first and second tongue pieces 3d and 3e are used in the conventional mounting operation, and are used when the wiper arm 3 is connected to the connecting member 15 according to the present embodiment. It is not a thing.

  The connecting member 15 includes a connecting portion 5, an attaching portion 7 attached to the connecting portion 5 and having a U-shaped hook 7 a to which the primary lever 9 is attached, and a cover (cover member) 6.

  The connecting portion 5 has a substantially rectangular tube shape including a bottom wall portion 5g, side wall portions 5k, 5k erected from both ends of the bottom wall portion 5g, and a top wall portion 5l. Is provided with a tongue piece 5a that can be elastically swung in the vertical direction. In the present embodiment, the tongue piece 5a is provided with a hole 5b, and the elastic strength of the tongue piece 5a is adjusted by appropriately adjusting the size of the hole 5b.

  An engagement protrusion (engagement portion) 5c is provided on the lower surface of the tongue piece 5a. In the present embodiment, the distal end portion 3f of the wiper arm portion 3 is inserted into the connecting portion 5, and the engagement protrusion portion 5c is engaged with the engagement hole 3c of the top wall portion 3b to engage with the engagement protrusion. The portion 5c and the engagement hole 3c are elastically engaged. At the tip of the tongue piece portion 5a, a release claw portion 5m for elastically lifting the tongue piece portion 5a upward and releasing the engagement between the engagement protrusion 5c and the engagement hole 3c is provided on the top wall portion. It is provided so as to protrude above 5 l.

  Further, a non-slip uneven portion 5d is formed on one side of the side wall portions 5k, 5k to improve workability when the wiper arm portion 3 is connected to the connecting member 15.

  Further, groove portions 5e extending in the insertion / removal direction (left-right direction in FIG. 4) of the tip portion 3f of the wiper arm portion 3 are formed on the lower outer sides of the side wall portions 5k, 5k, respectively. A front-side fitting hole 5fF and a rear-side fitting hole 5fR that are fitted with fitting claws 6g of the cover 6 to be described later are provided. Guide ribs 5j and 5j for guiding the side wall portions 3a and 3a of the wiper arm portion 3 are erected on the inner side of the bottom wall portion 5g.

  Further, a front wall portion 5h is formed on one end side (right side in FIG. 3) of the front end portion 3f in the bottom wall portion 5g, and the wiper arm portion 3 is formed on the upper portion of the front wall portion 5h. The insertion hole 5i which penetrates the 2 tongue piece part 3e is provided.

  The cover 6 is attached to the connecting portion 5 so as to be slidable in the insertion / removal direction of the distal end portion 3f, and includes a top wall portion 6i and side wall portions 6a and 6a extending downward from both ends of the top wall portion 6i. I have. The cover 6 restricts the tongue piece 5 a from being lifted upward while the connecting portion 5 is covered with the cover 6. That is, disengagement between the engaging hole 3c and the engaging protrusion 5c that are engaged with each other is restricted.

  Specifically, the release claw portion 5m is placed on the other end side (left side in FIG. 3) of the front end portion 3f of the top wall portion 6i of the cover 6 from the upper side at an engagement release restriction position described later. A tongue piece cover portion 6b that covers and has a lower surface in contact with the release claw portion 5m is provided. Thus, when the cover 6 is slid to the disengagement restricting position to cover the connecting portion 5, the lower surface of the tongue piece cover portion 6b comes into contact with the release claw portion 5m. The movement is restricted, and the disengagement between the engaging hole 3c and the engaging protrusion 5c that are engaged with each other is restricted.

  On one of the side walls 6a, 6a, an uneven portion 6c for preventing slipping is formed. Also, the other end side (left side in FIG. 3) of the top end portion 3f of the top wall portion 6i is pressed downward (in the extending direction of both side wall portions: the X direction in FIG. 13) to press both side wall portions 6a. , 6a is provided with a pressing protrusion (pressing member) 6d that widens the tip end portions 6h, 6h outward in the width direction (the direction in which the tip ends of the side wall portions are separated from each other). In this embodiment, the pressing protrusion 6d is provided with unevenness for preventing slipping.

  The cover 6 is provided with a front wall portion 6e adjacent to the front wall portion 5h in a state where the cover 6 covers the connecting portion 5. The upper portion of the front wall portion 6e has an insertion hole 5i. Corresponding insertion holes 6f are provided. The front wall portion 6e may not be in contact with the front wall portion 5h in a state where the cover 6 covers the connecting portion 5.

  Further, the front end portions 6h, 6h of the side wall portions 6a, 6a are respectively provided with fitting claw portions 6g, 6g that fit into the front fitting hole 5fF and the rear fitting hole 5fR.

  The attachment portion 7 includes a U-shaped hook 7 a for attaching the wiper blade portion 4, and a bottom wall portion 7 b for attaching the attachment portion 7 to the connecting portion 5. The bottom wall portion 7 b is connected to the connecting portion 5. The attachment portion 7 is attached to the connecting portion 5 by inserting the rivets 8 into the insertion holes provided in the respective bottom wall portions 5g and 7b in a state of being in contact with the lower surface of the bottom wall portion 5g.

  Here, a method of assembling the wiper device 1 according to the present embodiment will be described.

  First, the fitting claws 6g, 6g of the cover 6 are fitted in the front-side fitting holes 5fF, 5fF of the connecting portion 5, that is, the cover 6 is opened so as not to cover the tongue piece 5a of the connecting portion 5. Put it in a state.

  Next, the distal end portion (one of the wiper arm portion and one of the connecting means) 3f of the wiper arm portion 3 is inserted into the connecting portion (the other) 5 while the side wall portion 3a is guided by the guide rib. Then, the engaging protrusion 5c is engaged with the engaging hole 3c while the second tongue piece 3e is inserted through the insertion hole 5i of the front wall 5h. In the present embodiment, the distal end portion 3f of the wiper arm portion 3 is inserted in a state where the end portion of the tongue piece portion 5a is lifted elastically upward from the free state (the engagement protrusion 5c is positioned slightly above). The engagement protrusion 5c is engaged with the engagement hole 3c in a state of being biased downward.

  At this time, the wiper arm portion 3 is restricted in movement in the insertion / removal direction by the front wall portion 5h and the engagement projection portion 5c, and is vertically moved by the top wall portion 5l and the bottom wall portion 5g of the connection portion 5. Movement is restricted.

  In this state, the tongue piece 5a of the connecting portion 5 can be lifted upward without being obstructed by the cover 6, and the engagement between the engagement hole 3c and the engagement protrusion 5c is easily released. can do. As described above, when the fitting claws 6g and 6g of the cover 6 are fitted in the front fitting holes 5fF and 5fF of the connecting portion 5, the cover 6 has the engagement holes 3c and the engagement protrusions 5c. It is in the disengagement permission position which can permit disengagement.

  Next, the pressing protrusion 6d of the cover 6 is pressed downward, and as shown in FIG. 13, the front end portions 6h and 6h of the side wall portions 6a and 6a are expanded in a direction away from each other. Thus, by expanding the front end portions 6h, 6h of the side wall portions 6a, 6a away from each other, the fitting between the fitting claws 6g, 6g and the front fitting holes 5fF, 5fF is released, The cover 6 can slide in the insertion / removal direction while guiding the fitting claws 6g, 6g within the grooves 5e, 5e.

  Then, the fitting claws 6g, 6g are fitted into the rear fitting holes 5fR, 5fR of the connecting portion 5 while sliding the cover 6 to one end side (right side in FIG. 3) of the distal end portion 3f in the insertion / removal direction. Then, the connecting portion 5 is covered so that the tongue portion 5a does not lift upward. As described above, when the fitting claws 6g and 6g of the cover 6 are fitted in the rear fitting holes 5fR and 5fR of the connecting portion 5, the cover 6 has the engagement hole 3c and the engagement protrusion 5c. Is in a disengagement restricting position where disengagement with is restricted.

  At this time, if the engagement hole 3c and the engagement protrusion 5c are not properly engaged, the release claw portion 5m of the connecting portion 5 protrudes upward, and the cover 6 is slid to the engagement release restriction position. Can not be. In this way, by confirming whether or not the cover 6 can be slid to the disengagement restricting position, it is possible to confirm the connection state between the distal end portion 3f of the wiper arm portion 3 and the connecting portion 5.

  And the connection with the connection member 15 and the wiper arm part 3 can be cancelled | released by performing the procedure reverse to the above.

  According to the above-described embodiment, the connecting member (connecting means) 15 that connects the wiper arm portion 3 and the wiper blade portion 4 is provided so as to be slidable in the insertion / removal direction of the distal end portion (one end portion) 3f of the wiper arm portion 3. By providing the cover (cover member) 6 that restricts the engagement between the distal end portion 3f of the wiper arm portion 3 and the coupling member 15, that is, the engagement hole 3c and the engagement protrusion 5c. When the wiper device 1 is used, it is possible to restrict the release of the engagement between the distal end portion 3f of the wiper arm portion 3 and the connecting member 15 by the cover 6, so that the wiper arm portion 3 and the wiper blade portion 4 are detached. Can be suppressed.

  Further, according to the present embodiment, the connecting means is the connecting member 15 configured as a member different from the wiper blade portion 4, so that the connecting member 15 can be used as an attachment device for the wiper blade portion 4. it can. Therefore, if the structure of the connecting member is appropriately changed in accordance with the structure of the ready-made wiper arm part, it is not necessary to use a wiper blade part that matches a different wiper arm part mounting structure for each vehicle model, and the wiper blade part Can increase the sex.

  Further, according to the present embodiment, the top wall portion 6i of the cover 6 is provided with the pressing protrusion (pressing member) 6d, and the pressing protrusion 6d is directed downward (in the extending direction of the side wall portions 6a and 6a). By pressing, the front end portions 6h, 6h of the both side wall portions 6a, 6a are expanded in a direction away from each other so that the fitting between the side wall portions 6a, 6a and the connecting member 15 is released. By simply pressing the projection 6d downward, the cover 6 in a state in which the side wall portions 6a, 6a and the connecting member 15 are fitted to each other and are regulated to slide is easily inserted and removed in the direction of inserting and removing the tip of the wiper arm portion 3. Can be slid.

  Further, according to the present embodiment, the engaging portion is provided in the engaging hole 3 c provided in the distal end portion (one end portion) 3 f of the wiper arm portion 3 and the tongue piece portion 5 a of the connecting portion 5. 3c, and an engagement protrusion 5c that elastically engages with the cover 3c. The cover (cover member) 6 has an engagement release restriction position (a state in which engagement release of the engagement part is restricted) of the tongue piece 5a. By covering the release claw part (tip) 5m and providing the tongue piece cover part 6b whose lower surface abuts on the release claw part 5m, the engagement is achieved when the tip part 3f of the wiper arm part 3 and the connection part 5 are connected. When the protrusion 5c is riding on the top wall 3b (the engagement hole 3c and the engagement protrusion 5c are not properly engaged), the cover 6 is slid to the disengagement restricting position. Even so, the tongue cover 6b hits the release claw 5m and the cover 6 slides in the way. Will be, will not be able to tongue cover portion 6b covers the release claw portion 5m. Therefore, the connection portion 5 is covered in a state where the engagement hole 3c and the engagement protrusion 5c are not properly engaged, that is, in a state where the connection between the distal end portion 3f of the wiper arm portion 3 and the connection portion 5 is incomplete. 6 can be suppressed.

  In addition, according to the present embodiment, since the fitting claws 6g, 6g can be slid in the insertion / removal direction while being guided in the grooves 5e, 5e, the cover 6 is inserted / removed in the distal end portion of the wiper arm portion 3. There is also an advantage that it can slide smoothly.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made.

  For example, in the above-described embodiment, the case where the wiper blade portion is configured by a primary lever, a secondary lever, and a yoke is illustrated, but the present invention is not limited to such a configuration.

  In addition, although the connecting member provided separately is illustrated as the connecting means, for example, a connecting portion in which a cover is attached to the wiper blade portion is integrally provided, and the wiper arm portion is connected via the connecting portion. May be. Thus, by providing the connecting means integrally with the wiper blade portion, it is possible to prevent the wiper arm portion and the wiper blade portion from being detached, and to obtain a wiper device capable of simplifying the configuration. be able to.

The top view which shows the external appearance of the wiper apparatus concerning one Embodiment of this invention. The side view which shows the external appearance of the wiper apparatus concerning one Embodiment of this invention. The perspective view which shows the state of the connection member before connecting the wiper arm part concerning one Embodiment of this invention. The top view which shows the state of the connection member before connecting the wiper arm part concerning one Embodiment of this invention. AA sectional drawing of FIG. The perspective view which shows the state of a connection member when the wiper arm part concerning one Embodiment of this invention is connected. The top view which shows the state of a connection member when the wiper arm part concerning one Embodiment of this invention is connected. BB sectional drawing of FIG. The perspective view which shows the state which covered the engaging part of the wiper arm part and connection member concerning one Embodiment of this invention with the cover member. The top view which shows the state which covered the engaging part of the wiper arm part and connection member concerning one Embodiment of this invention with the cover member. CC sectional drawing of FIG. The cross-sectional view which shows the state which the connection member concerning one Embodiment of this invention and the cover member are engaging. The cross-sectional view which shows the state by which engagement with the connection member and cover member concerning one Embodiment of this invention was cancelled | released.

Explanation of symbols

1 Wiper device 2 Rotating shaft (drive shaft)
3 Wiper arm part 3a Side wall part 3b Top wall part 3c Engagement hole (engagement part)
4 Wiper blade part 5 Coupling part 5a Tongue piece part 5c Engaging protrusion (engaging part)
5fF Front fitting hole (fitting part)
5fR Rear side fitting hole (fitting part)
5m release claw (tip of tongue)
6 Cover (cover member)
6a Side wall part 6b Tongue piece cover part 6d Pressing protrusion (pressing member)
6g Fitting protrusion (fitting part)
6h Tip portion 7 Mounting portion 15 Connecting member

Claims (8)

In a wiper device comprising: a wiper arm portion swingably provided around a drive shaft; and a wiper blade portion detachably attached to the wiper arm portion via a connecting means.
One end of the wiper arm portion and the connecting means each include an engaging portion that engages with each other when one of the one end of the wiper arm portion and the connecting means is inserted into the other,
The wiper device characterized in that the connecting means includes a cover member that is slidable in one end portion of the wiper arm portion or in the insertion / removal direction of the connecting means and restricts disengagement of the engaging portion.   The wiper device according to claim 1, wherein the connecting unit is a connecting member formed of a member different from the wiper blade portion. The cover member includes a top wall portion, and side wall portions respectively extending from both side end portions of the top wall portion,
A fitting portion that fits to each other is provided on the inner side of the front end portion of the both side wall portions and the connecting member, and the top wall portion is pressed toward the extending direction of the side wall portion on the top wall portion. Providing a pressing member,
By pressing the pressing member in the extending direction, the front end portions of the side wall portions are expanded in a direction away from each other so that the fitting between the side wall portions and the connecting member is released. The wiper device according to claim 2, wherein The connecting member is provided with an elastically swingable tongue piece portion, and the engagement portion is provided in an engagement hole provided in one end portion of the wiper arm portion, and the tongue piece portion, It is composed of an engagement protrusion that elastically engages with the engagement hole,
The cover member is provided with a tongue piece cover portion that covers a tip end of the tongue piece portion and abuts against the tip end of the tongue piece portion in a state in which disengagement of the engagement portion is restricted. The wiper device according to claim 3.   The wiper device according to claim 1, wherein the connecting means is provided integrally with the wiper blade portion. A connecting portion having an engaging portion for inserting and engaging one end portion of a wiper arm portion swingably provided around a drive shaft;
An attachment portion for attaching a wiper blade portion for wiping the surface to be wiped provided on the connecting portion,
A cover member provided on the connecting portion so as to be slidable in an insertion / removal direction of one end portion of the wiper arm portion, and restricting disengagement of the engagement portion;
A connecting member comprising: The cover member includes a top wall portion, and side wall portions respectively extending from both side end portions of the top wall portion,
A fitting portion that fits to each other is provided on the inner side of the front end portion of the both side wall portions and the connecting portion, and the top wall portion is pressed toward the extending direction of the side wall portion on the top wall portion. Providing a pressing member,
By pressing the pressing member in the extending direction, the front end portions of the side wall portions are expanded in a direction away from each other so that the fitting between the side wall portions and the connecting portion is released. The connecting member according to claim 6, wherein The connecting portion is provided with an elastically swingable tongue piece portion, and the engagement portion is provided in the tongue piece portion and in an engagement hole provided in one end portion of the wiper arm portion. An engaging protrusion that elastically engages,
The cover member is provided with a tongue piece cover portion that covers a tip end of the tongue piece portion and abuts against the tip end of the tongue piece portion in a state in which disengagement of the engagement portion is restricted. The connecting member according to claim 7.

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