JP2014004846A - Wiper blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiper blade capable of surely preventing infiltration of water into a hood and achieving cost reduction and height reduction of the wiper blade.SOLUTION: A wiper blade 1 includes a wiper blade body 2, a hood 3 and a clip case 4. A primary lever 21 of the wiper blade body 2 includes a protruding section 21C, and an arm section 43 of the clip case 4 is fixed to a side surface of the protruding section 21C by a straight type rivet 45. The rivet 45 is extended in a lateral direction inside the protruding section 21C, is passed through side surfaces on both sides of the wiper blade body 2 and is caulked outside the wiper blade body 22 and the hood 3.

Description

  The present invention relates to a hooded wiper blade, and more particularly, to a hooded wiper blade improved so as to reliably prevent water from entering the hood.

  Some wiper blades used in cold districts or the like are provided with a rubber hood that covers at least a part of the wiper blade body. In such hooded wiper blades (so-called winter blades), the hood prevents snow and water from entering the inside of the wiper blade body, so that snow and frozen water can function in the wiper blade body (especially levers). Hindering the rotation of a plurality of levers constituting the part).

  In such a wiper blade with a hood, a connecting member for connecting the wiper blade to the wiper arm is attached to the wiper blade body from the upper side of the hood.

  FIG. 7 shows a conventional wiper blade 101 having such a connecting member. As shown in the drawing, the wiper blade 101 includes a wiper blade main body 102, a hood 103, and a clip case 104 as a connecting member.

  The wiper blade body 102 includes a blade rubber portion 110 that is a portion for wiping a surface to be wiped such as a glass surface of an automobile when the wiper blade 101 is used, and a lever portion 120 including a plurality of levers that support the blade rubber portion 110 from above. And. End caps 105 are attached to both end portions of the lever portion 120 in the longitudinal direction.

  The hood 103 is a rubber sheet-like member, and covers the entire lever portion 120 of the wiper blade body 102 from above. A lower end portion (not shown) of the hood 103 is fixed to the blade rubber portion 110, while both end portions in the longitudinal direction of the hood 103 are fixed to the end cap 105. As a result, the inside of the hood 103 is sealed from the outside of the hood 103, and entry of water, snow, or the like into the hood 103 is prevented.

  The clip case 104 is a member to which a clip member for connection with the wiper arm is attached, and is disposed on the upper side of the wiper blade main body 102. Here, since the upper side of the wiper blade body 102 is covered with the hood 103, the hood 103 is sandwiched between the wiper blade body 102 and the clip case 104. The clip case 104 is fixed to the wiper blade body 102 by a blind rivet 106.

  FIG. 8 shows the fixing of the clip case 104 by the blind rivet 106 in detail. As shown in the figure, the blind rivet 106 includes a cylindrical rivet main body 107 and a mandrel 108 disposed in the hollow portion 107 </ b> A of the rivet main body 107. In FIG. 8, the mandrel 108 is illustrated in a short cut state after the fastening operation by the blind rivet 106 is completed, and the mandrel 108 before the fastening operation extends to the outside of the hollow portion 107 </ b> A toward the upper side of the figure. It extends.

  At the time of fastening work by the blind rivet 106, the mandrel is placed with the rivet main body 107 disposed through the clip case 104, the hood 103, and the lever portion 112, and the head 107B of the rivet main body 107 is engaged with the clip case 104. Pull 108 upward. As a result, the ball portion 108A at the tip of the mandrel 108 inflates the lower end portion of the rivet body 107, and caulking is performed on the lower end side of the rivet body 107 (that is, inside the wiper blade body 102). .

JP 2009-241728 A JP 2009-262594 A JP 2011-131831 A

  As described above, in the conventional hooded wiper blade 101, when the clip case 104 is fixed to the wiper blade main body 102 by using the blind rivet 106, the rivet 106 can be easily caulked inside the wiper blade main body 102. To be able to do.

  However, since the blind rivet 106 has a structure in which the mandrel 108 is inserted into the hollow portion 107 </ b> A of the rivet main body 107, there is a slight gap between the rivet main body 107 and the mandrel 108. For this reason, water intrusion into the hood 103 occurs from the slight gap, and the water reaching the lever portion 120 is frozen, thereby inhibiting the mutual rotation operations of the plurality of levers constituting the lever portion 120. As a result, the function of the wiper blade 101 may be deteriorated.

  In order to cope with such a problem, it is also conceivable to use a shield type blind rivet in which the tip of the rivet body has a bag shape. However, such a shield-type blind rivet is expensive and increases the manufacturing cost of the wiper blade.

  In addition, some conventional wiper blades 101 use screws instead of the blind rivets 106 to fix the rivet case 104, but the problem of water immersion remains the same as that of the blind rivets 106 and is compared to fixing with the blind rivets 106. As a result, the assembly work becomes complicated.

  Furthermore, the conventional wiper blade 101 has a configuration in which the fixing member is inserted from the upper side of the wiper blade main body 102 both when the blind rivet 106 is used as a fixing member and when a screw is used. When the blade rubber part 110 is deformed following the shape of the surface to be wiped, the blind rivet 106 or the lower end of the screw that extends downward inside the wiper blade body 102 is the lever or blade rubber part of the lever part 120. 110 may come into contact. Further, if it is attempted to avoid such contact, the wiper blade cannot be reduced in height (thinned).

  The present invention has been made paying attention to such problems, and in a wiper blade with a hood, water can be surely prevented from entering the hood, and cost reduction and a reduction in the height of the wiper blade can be achieved. An object is to provide a wiper blade with a hood.

  In the present invention, a wiper blade body, a connection member for connecting the wiper blade body to a wiper arm, and a hood disposed between the wiper blade body and the connection member and covering at least a part of the wiper blade body And a fixing member that fixes the connection member to the wiper blade body. The connection member is fixed to the wiper blade body by the fixing member on a side surface of the wiper blade body.

  The fixing member may penetrate both side surfaces of the wiper blade body.

  The upper surface of the wiper blade body may include a raised portion, and the connection member may be fixed to the wiper blade body by the fixing member on a side surface of the raised portion.

  The connecting member may be disposed on an upper surface of the wiper blade body, and the raised portions may be located on both sides in the longitudinal direction of the connecting member.

  The connection member may include an arm portion disposed on a side surface of the raised portion, and the arm portion may be fixed to the side surface of the raised portion by the fixing member.

  The fixing member may be a rivet of a type that does not have a hollow portion inside, and may be crimped on at least one outer side of both side surfaces of the wiper blade.

The connection member may be a clip case to which a clip member for connecting the wiper blade to the wiper arm is mounted.
Further, the connecting member may be a member to which a connecting portion of the wiper arm is directly connected.

  According to the present invention, in the wiper blade (for example, the wiper blade 1), the connection member (for example, the clip case 4) is fixed by the fixing member (for example, the rivet 45) on the side surface of the wiper blade body (for example, the wiper blade body 2). It has become. Therefore, for example, the fixing member can be arranged as a rivet of a type that does not have a hollow portion inside (straight type) so as to penetrate the side surfaces on both sides of the wiper blade body, and the rivet is arranged outside the side surface of the wiper blade. If it is made to caulk in, it can prevent appropriately the inundation to the inner side of the hood (for example, hood 3) in the fixed location by a fixing member. Therefore, the performance of the wiper blade is not degraded due to water immersion in the hood. In addition, since a straight type rivet that is extremely inexpensive as compared with a blind rivet or the like used in a conventional product can be used, the manufacturing cost of the wiper blade can be greatly reduced.

  Further, if a raised portion (for example, raised portion 21C) is provided on the upper surface of the wiper blade body, and the connecting member is fixed to the side surface of the raised portion, the fixing member is arranged so as to extend laterally from the side surface of the raised portion. And the whole fixing member can be made into the state accommodated inside the protruding part. Therefore, the fixing member does not interfere with the operation of the components of the wiper blade (for example, the blade rubber portion 10, the secondary lever 22, and the yoke lever 23), and the high performance of the wiper blade can be maintained. Further, the wiper blade can be reduced in height (thinned).

  In addition, since the fixing member extends in the lateral direction of the wiper blade and fixes the wiper blade main body and the connecting member, the fixing member is fixed to the wiper blade main body in the left-right direction particularly required when using the wiper blade. The strength in the (lateral direction) is increased. Therefore, the performance of the wiper blade is improved.

It is a perspective view which shows the wiper blade in embodiment of this invention. It is a disassembled perspective view which similarly shows a wiper blade. It is a side view which similarly shows the inner side of the food | hood of a wiper blade. It is a disassembled perspective view which similarly shows a lever part. It is a disassembled perspective view which similarly shows a clip case. It is AA sectional drawing of FIG. It is a side view which shows the inner side of the food | hood of the conventional wiper blade. It is BB sectional drawing of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
1 to 3 show a wiper blade 1 according to an embodiment of the present invention.

  As shown in the drawing, the wiper blade 1 includes a wiper blade body 2, a hood 3, and a clip case 4. The wiper blade body 2 includes a blade rubber portion 10 and a lever portion 20.

  The blade rubber portion 10 includes a blade rubber 11 that is a long rubber member, and a long holding member 12 that is disposed along the upper end portion 11 </ b> A of the blade rubber 11 and holds the blade rubber 11. End caps 5 are attached to both ends of the blade rubber portion 10, and the end caps 5 constitute both end portions of the wiper blade 1.

  The blade rubber 11 is a member for wiping a surface to be wiped such as a glass surface of an automobile. When the wiper blade 1 is used, the lower end portion 11B of the blade rubber 11 is disposed along the surface to be wiped. In this state, the wiper blade 1 moves along the surface to be wiped, so that the blade rubber 11 wipes the surface to be wiped.

  The lever portion 20 is configured to support the blade rubber portion 10 and includes a primary lever 21, two secondary levers 22, and two yoke levers 23.

  As shown in FIG. 4, the primary lever 21 is a lever member that constitutes a central portion in the longitudinal direction of the lever portion 20, and the clip case 4 is placed near the longitudinal center of the upper surface 21 </ b> A. A placement portion 21B is formed. Further, on the both sides in the longitudinal direction of the placement portion 21B, a raised portion 21C that is raised upward is formed. Rivet holes 21D are formed on both side surfaces of the raised portion 21C. Furthermore, the connection part 21E with which the secondary lever 22 is connected is provided in the edge part of the longitudinal direction both sides of the primary lever 21. As shown in FIG.

  The secondary lever 22 is a lever member disposed below the primary lever 21. Each secondary lever 22 is rotatably connected to a connecting portion 21E of the primary lever 21 via a connecting pin 24 at a connecting portion 22A near the center in the longitudinal direction. Thus, the secondary lever 22 is supported so as to be rotatable with respect to the primary lever 21.

  Further, a connecting portion 22B for connecting the yoke lever 23 is provided at the outer end of the secondary lever 22 in the longitudinal direction of the wiper blade. Further, a claw portion 22 </ b> C for holding the blade rubber portion 10 is provided at the end of the secondary lever 22 on the side opposite to the connecting portion 22 </ b> B.

  The yoke lever 23 is a lever member disposed below the secondary lever 22, and is rotated by the connecting pin 25 to the connecting portion 22 </ b> A of the corresponding second lever 22 in the connecting portion 23 </ b> A provided at the substantially center in the longitudinal direction. Connected as possible. As a result, the yoke lever 23 is rotatably supported with respect to the secondary lever 22. Further, claw portions 23 </ b> B for holding the blade rubber portion 10 are provided at both end portions of the yoke lever 23.

  With such a configuration, the blade rubber portion 10 is provided at a plurality of points in the longitudinal direction by the plurality of claw portions 22C and 23B of a plurality of levers (two secondary levers 22 and two yoke levers 23) that can rotate with respect to each other. Is held by. Accordingly, the blade rubber portion 10 can be deformed by rotating a plurality of levers constituting the lever portion 20 to each other. Therefore, when the curved shape of the surface to be wiped changes when the wiper blade 1 is used, the blade rubber portion 10 can be appropriately deformed following the shape change of the surface to be wiped.

  As shown in FIGS. 1 to 3, the hood 3 is a rubber sheet-like member that covers the lever portion 20 of the wiper blade body 2 from above. The lower end portion 3A of the hood 3 is fixed to the blade rubber portion 10 so that no gap is generated. Further, both end portions 3B in the longitudinal direction of the hood 3 are bonded to the end caps 5 at both ends of the blade rubber portion 10 and fixed without gaps. Thereby, the food | hood 3 has coat | covered the whole lever part 20 in the sealing state.

  The clip case 4 is a connection member for connecting the wiper blade 1 to a wiper arm (not shown), and is disposed on the mounting portion 21 </ b> B of the primary lever 21 from the upper side of the hood 3.

  As shown in FIG. 5, the clip case 4 includes a case main body 41 and extension portions 42 on both sides. The case main body 41 is a U-shaped member having a substantially rectangular bottom surface portion 41A and side surface portions 41B on both sides, and the bottom surface portion 41A is placed on the placement portion 21B of the wiper blade body 2. It has become.

  The side surface portions 41B on both sides extend vertically upward from both sides of the bottom surface portion 41A, and face each other in parallel. A pin hole 41C is provided in the longitudinal center of the side surface portion 41B. A connecting pin 44 is mounted in the pin hole 41C, and is spanned between the side portions 41B. The clip member 6 is rotatably attached to the connecting pin 44. The clip member 6 can be connected to a connecting portion (for example, a U hook portion) of a wiper arm (not shown), and by this connection, the wiper blade 1 is rotatably connected to the wiper arm. Yes.

  The extension portion 42 extends obliquely upward from both longitudinal sides of the bottom surface portion 41A. Thus, when the clip case 4 is disposed on the placement portion 21B of the primary lever 21, the extension portions 42 on both sides of the clip case 4 are disposed along the raised portions 21C on both sides in the longitudinal direction of the placement portion 21B. It has become so.

  A pair of arm portions 43 extend from both sides of each extension portion 42 and are arranged on both side surfaces of the raised portion 21 </ b> C of the primary lever 21. These arm portions 43 are formed with rivet holes 43A. With such a configuration, the clip case 4 is fixed to the wiper blade main body 2 by the rivet 45 that penetrates the rivet hole 43 </ b> A of the clip case 4 and the rivet hole 21 </ b> D of the primary lever 21. In this case, since the hood 3 is disposed between the clip case 4 and the primary lever 21, the rivet 45 is attached through the hood 3. Therefore, the hood 3 is sandwiched and fixed between the clip case 4 and the wiper blade body 2.

  FIG. 6 shows in detail the fixing of the clip case 4 to the wiper blade body 2 by the rivet 45. As shown in the figure, the rivet 45 is a straight type (solid type that does not have a hollow portion like a blind rivet), and includes a rivet hole 21 </ b> D of the primary lever 21, a hood 3, and a clip case 4. The arm portion 43 is mounted through the rivet hole 43A in the lateral direction. As a result, the head portion 45 </ b> A and the end portion 45 </ b> B of the rivet 45 are disposed outside the arm portion 43. In this state, the clip case 4 is fixed to the primary lever 21 (wiper blade body 2) by the rivet 45 by crimping the end portion 45B.

  As described above, according to the wiper blade 1 of the present embodiment, the clip case 4 has the arm portion 43 fixed to the side surfaces on both sides of the wiper blade main body 2 (primary lever 21). The rivet 45 for fixing the clip case 4 to the wiper blade main body 2 passes through the wiper blade main body 2 in the lateral direction and is applied outside the side surface of the wiper blade main body 2. Tightened. Accordingly, the rivet 45 can be caulked outside the wiper blade 1, and a straight type rivet 45 can be used as a fixing member instead of a blind rivet. Therefore, the inundation from the fixed portion by the rivet 45 to the inside of the hood 3 does not occur. Further, since the straight type rivet 45 is extremely inexpensive as compared with the blind rivet and screw used in the conventional products, a significant cost reduction can be achieved.

  Further, since the rivet 45 is disposed extending laterally from the side surface of the raised portion 21C of the primary lever 21, the entire rivet 45 can be accommodated inside the raised portion 21C and protrudes downward. Absent. Therefore, there is no possibility that the rivet 45 will come into contact with the blade rubber portion 10, the secondary lever 22, and the yoke lever 23 of the wiper blade body 2, so that the deformation of the blade rubber portion 10 and the rotation of each lever of the lever portion 20 are avoided. The dynamic operation is not hindered and the high performance of the wiper blade 1 can be maintained. Further, even if the wiper blade body 2 is reduced in height (thinned), the rivet 45 and the components of the wiper blade body 2 do not interfere with each other, so that the wiper blade 1 can be thinned.

  Furthermore, since the rivet 45 extends in the lateral direction of the wiper blade 1, the strength in the left-right direction (lateral direction) at the location where the clip case 4 is fixed to the wiper blade body 2 is improved. Accordingly, the strength against the load in the left-right direction that is particularly required when the wiper blade 1 is used is improved, so that the performance of the wiper blade 1 is enhanced.

  In the above embodiment, the connection member provided in the wiper blade 1 is the clip case 4, but the present invention is not limited to such a form. The connecting member may be in any form as long as it is a member that constitutes at least a part of a connection structure for connecting the wiper blade 1 to the wiper arm. It is good also as a member to which a U hook part) is directly connected.

DESCRIPTION OF SYMBOLS 1 Wiper blade 2 Wiper blade main body 3 Hood 4 Clip case 5 End cap 10 Blade rubber part 20 Lever part 21 Primary lever 21B Placement part 21C Raised part 21D Rivet hole 22 Secondary lever 23 York lever 41 Clip case main body 42 Extension part 43 Arm Part 43A Rivet hole 45 Rivet

Claims (8)

A wiper blade body, a connection member for connecting the wiper blade body to a wiper arm, a hood disposed between the wiper blade body and the connection member and covering at least a part of the wiper blade body, and the connection In a wiper blade comprising a fixing member for fixing a member to the wiper blade body,
The connection member is a wiper blade fixed to the wiper blade body by the fixing member on a side surface of the wiper blade body.   The wiper blade according to claim 1, wherein the fixing member passes through side surfaces on both sides of the wiper blade main body.   The wiper blade according to claim 1, further comprising a raised portion on an upper surface of the wiper blade body, wherein the connection member is fixed to the wiper blade body by the fixing member on a side surface of the raised portion.   4. The wiper blade according to claim 3, wherein the connection member is disposed on an upper surface of the wiper blade main body, and the raised portions are positioned on both sides in the longitudinal direction of the connection member.   The wiper blade according to claim 3 or 4, wherein the connection member includes an arm portion disposed on a side surface of the raised portion, and the arm portion is fixed to the side surface of the raised portion by the fixing member.   The said fixing member is a rivet of a type which does not have a cavity part inside, and is crimped in the outer side of at least one of the side surfaces of the both sides of the said wiper blade. Wiper blade.   The wiper blade according to any one of claims 1 to 6, wherein the connection member is a clip case to which a clip member for connecting the wiper blade to a wiper arm is mounted. The wiper blade according to any one of claims 1 to 6, wherein the connecting member is a member to which a connecting portion of a wiper arm is directly connected.

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