JPH0742733U - Wiper assembly structure - Google Patents

Abstract

(57) [Summary] [Purpose] A wiper assembly structure in which the yoke member tilts according to the friction generated on the contact surface between the blade rubber and the windshield, and the curved surface of the blade rubber is brought into close contact with the windshield. I will provide a. [Structure] The first yoke member 1 and the second yoke member 2 are connected by a connecting tool 26. An opening 12 is formed on the end face 11 of the yoke member 1, and an opening hole 13 is formed on the top wall surface near the end face 11.
And the protrusion 131 is provided on the side wall thereof. The arm portion 23 of the yoke member 2 is formed with a concave portion 24 that spreads in a tapered shape. A vertical groove 263 is formed in the head of the connector 26 so that the protruding piece 131 of the opening hole portion 13 of the yoke member 1 can be selectively fitted, and the arm portion of the yoke member 2 is provided at the top of the inner wall of the through opening 261 in the base. A convex piece 262 is formed which is seated in the concave portion 24 formed in the groove 23.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wiper assembling structure, and more particularly to a wiper assembling structure capable of suppressing wear of a blade rubber during reciprocating movement of a wiper in a wiper device assembled from two or more yoke members.

[0002]

[Prior art]

 In the conventional wiper device, a new yoke member is connected to each end of a yoke member pivotally attached to an arm that reciprocally swings around a base by a drive device, or both ends of the yoke member pivotally attached to the arm are connected. It is assembled by connecting the ends of the new yoke member with each other, and attaching and supporting a blade rubber between the yoke members.

[0003]

[Problems to be solved by the device]

 As described above, in the conventional wiper assembly, the pins are riveted to connect the yoke members, and the yoke members are interlocked and connected, so that the assembly structure is fixed and the drive unit side is connected. I could only move the wiper away from the window glass surface by raising the arm from the base of the, and the yoke member with the blade rubber attached could not be rotated left or right or extended back and forth.

Therefore, the blade rubber cannot make an appropriate inclination on the windshield surface according to the reciprocating swing of the arm, and the curved surface of the windshield and the curved surface of the blade rubber are all the same in each vehicle. However, there is a problem in that the wiping function of the wiper cannot be fully exerted because proper adjustment cannot be performed. Also, since the contact surface of the blade rubber with the windshield is fixed, the friction resistance at the contact surface increases, the abrasion of the rubber at the contact surface accelerates, and the wiping function further deteriorates. If there is dust or the like on the top, the dust may move with the wiper on the fixed contact surface and damage the glass.

Therefore, according to this invention, the yoke member also tilts in accordance with the friction generated on the contact surface between the blade rubber and the window glass as the arm reciprocates and swings, and the curved surface of the blade rubber adheres to the wind glass. The purpose of the present invention is to provide an assembling structure of a wiper that can be adjusted as described above.

[0006]

[Means for Solving the Problems]

 The wiper assembly structure of the present invention is a second yoke in which a holder for holding and supporting a blade rubber is attached to both ends of a first yoke member having a substantially U-shaped cross section and having end face walls. An assembly structure of a wiper assembled by connecting members, wherein an opening for loosely fitting an arm portion supporting a holder of a second yoke member is formed in an end surface wall of the first yoke member, and the end portion is formed. An opening hole is formed on the top wall surface in the vicinity, a protrusion is provided on the side wall of the opening hole, and a taper-shaped concave portion is formed on the arm portion supporting the holder of the second yoke member. A connecting member made of an elastic material in which the head is mounted in the opening of the yoke member, and the through opening formed in the base surrounds and engages the arm of the second yoke member. And the projection piece of the opening hole portion of the first yoke member is selected on the head of the coupling tool. With a longitudinal groove capable of fitting multiple forming, on the inner wall top portion of the through opening of the base are made form convex piece seated in a recess formed in the arm portion of the second yoke member.

[0007]

[Action]

 According to the structure of claim 1, the head of the connector is attached to the opening hole of the first yoke member, and the through opening of the base is engaged with the arm of the second yoke member. When connecting the yoke member and the second yoke member, the opening of the end wall of the first yoke member is loosely fitted in the arm of the second yoke member, and the inner wall of the through opening of the connector base is formed. Since the convex piece formed on the top portion is seated in the concave portion formed on the arm portion of the second yoke member, the taper width of the concave portion on which the convex piece is seated is smaller than that of the first yoke member. The second yoke member can be tilted. Further, when the head of the connecting tool is mounted in the opening hole portion of the first yoke member, if the groove to be fitted with the protruding piece provided on the side wall of the opening hole portion is selected, the connecting tool is provided by the pitch of the groove. The mounting position can be changed, and the position where the convex piece of the connector is seated in the recess is also changed. Therefore, the taper width of the recess at the seating position is also changed, so The tilting range of the second yoke member can be changed and adjusted.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an appearance of a wiper assembled as an embodiment of the present invention. A first yoke member 1 having a substantially U-shaped cross section which is pivotally attached to an arm reciprocally rocked by a driving device (not shown). The second yoke member 2 is connected to both ends of the second yoke member 2, and the third yoke member 3 is connected to the end portion of the second yoke member 2, and the holders 22 and 34 provided on the yoke member 2 and the yoke member 3 are connected. The backing 4 holding the blade rubber 5 is held by.

FIG. 2 is a perspective view showing a configuration of each part disassembled before assembly, and FIG. 3 is an enlarged perspective view showing a configuration of a main part. An opening 12 that forms a downward opening is formed on the end surface 11 of the yoke member 1, an opening hole 13 is formed on the top wall surface near the end surface 11, and a side wall of the opening hole 13 is formed inside the opening. A protruding piece 131 that protrudes is provided. The base of the yoke 2 on the main body side of the columnar arm 23 that connects the yoke member 2 and the holder 22 is loosely fitted in the opening 12, but the upper surface of the arm 23 on the side of the yoke member 1 is tapered. A concave portion 24 is formed so as to widen like a circle. Further, an opening 20 is formed on the end surface 21 of the yoke member 2 so as to open downward, and an arm portion connected to the holder 34 of the yoke member 3 is fitted into the opening 20.

The first yoke member 1 and the second yoke member 2 are connected by a connecting tool 26, which is formed of a block body having a convex cross section as shown in the drawing. A plurality of vertical grooves 263 are formed on both side surfaces of the head forming a part, a through opening 261 is formed on the base side, and a convex piece 262 is formed on the top of the inner wall. In order to connect the yoke member 1 and the yoke member with the connecting member 26, first, the base portion of the connecting member 26 is expanded and engaged with the through opening 261 so as to surround the arm portion 23 of the yoke member 2. At this time, the convex piece 262 provided in the through opening 261 is engaged so as to be seated in the concave portion 24 of the arm portion 23. Next, the head of the connecting tool 26 is attached to the opening hole 13 of the yoke member 1. At this time, the protruding piece 131 of the opening hole portion 13 is fitted into the vertical groove 263 formed in the head of the connector 26 while being mounted, and the opening portion 12 of the end surface 11 of the yoke member 1 is widened while being mounted. The base of the second arm 23 is fitted.

When the yoke member 1 and the yoke member 2 are connected by the connecting tool 26 in this way, the base of the arm portion 23 of the yoke member 2 is loosely fitted in the opening 12. Since the convex piece 262 of the through opening 261 of the connector 26 is seated in the concave portion 24 formed in the arm portion 23 of the yoke member 2, only the taper width of the concave portion 24 in which the convex piece 262 is seated. The second yoke member 2 can be tilted with respect to the first yoke member 1. Further, as shown in FIG. 4, while lifting the front end of the yoke member 2, the protruding piece 131 fitted in the vertical groove 263 is removed, and the linking tool 26 is slid with a finger or a screwdriver to slide the other vertical groove 263. By fitting the protrusion 131 into the groove, the mounting position of the connector 26 can be changed by the pitch of the groove. If the position where the convex piece 262 of the connector 26 is seated in the recess 24 is changed in this way, the taper width of the recess 24 at the seating position is also changed, so that the yoke member 1 and the yoke member 2 are not moved. The tilt range can be changed and adjusted.

In the embodiment, the yoke member 3 is further connected to the yoke member 2, but as shown in FIG. 5, it is connected to the holder 34 of the yoke member 3 at the opening 20 of the end surface 21 of the yoke member 2. The support arm 33 is fitted. As shown in the enlarged view of FIG. 6, the supporting arm portion 33 has a raised portion 33a formed on the periphery thereof in contact with the inner peripheral surface of the opening portion 20, so that the yoke member 3 is raised relative to the yoke member 2. It can be rotated or slid back and forth on the inner peripheral surface of the opening 20 in contact with.

As described above, the wiper assembled in this manner tilts the second yoke member 2 with respect to the first yoke member 1 by the taper width of the concave portion 24 on which the convex piece 262 is seated. As shown in FIGS. 7 to 9, the yoke member 2 which supports the blade rubber 5 in accordance with the friction generated on the contact surface between the blade rubber 5 and the window glass due to the reciprocating swing of the arm (not shown) is also shown in FIGS. Tilt. Since the yoke member 2 tilts in accordance with the reciprocating swing of the arm and acts so as to reduce the frictional force, the abrasion of the blade rubber 5 can be suppressed as much as possible.

When the blade rubber 5 is worn out, the tilting angle of the yoke member 2 can be adjusted as described above. Therefore, if the contact surface is adjusted appropriately, The life of the blade rubber 5 can be extended. Further, since the yoke member 3 can also be rotated or slid back and forth with respect to the yoke member 2, the force applied by the reciprocating swing of the arm can be adjusted to be uniform. Figure 10 shows the movement of each part.

[0015]

[Effect of device]

 According to the wiper assembly structure of the present invention, the second yoke member supporting the blade rubber is tilted with respect to the first yoke member in accordance with the reciprocating swing of the arm, and the contact surface between the blade rubber and the windshield is moved. Since it acts so as to reduce the frictional force at, it is possible to suppress the wear of the blade rubber as much as possible. Also, since the tilt angle can be adjusted, the curved surface of the blade rubber can be adjusted so as to be in close contact with the wind glass, and the wiping function can be fully exerted.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external configuration of a wiper according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the configuration of each disassembled part before assembly.

FIG. 3 is a perspective view showing an enlarged configuration of a main part.

FIG. 4 is a diagram illustrating adjustment of a tilt angle of a yoke member.

FIG. 5 is a partial side sectional view showing the assembled wiper.

FIG. 6 is a cross-sectional view showing a connected state of a second yoke member and a third yoke member.

FIG. 7 is a diagram showing a state in which a yoke member tilts.

FIG. 8 is a diagram showing a state in which the yoke member tilts.

FIG. 9 is a view showing a state in which the yoke member tilts.

FIG. 10 is a diagram illustrating the movement of each unit.

[Explanation of symbols]

 1 1st yoke member 2 2nd yoke member 3 3rd yoke member 4 Backing 5 Blade rubber 11 End face 12 Opening 13 Opening hole 23 Arm 24 Recess 26 Connecting tool 131 Projection piece 261 Through opening 262 Convex Single 263 vertical groove

Claims (1)

[Scope of utility model registration request] 1. A second yoke member having holders for holding and supporting a blade rubber attached to both ends of a first yoke member having a substantially U-shaped cross section and having an end face wall. A structure for assembling a wiper according to claim 1, wherein an opening for loosely fitting an arm supporting a holder of the second yoke member is formed in an end surface wall of the first yoke member, and a top wall surface near the end is formed. An opening hole is formed and a projection piece is provided on a side wall of the opening hole, and a concave portion that expands in a taper shape is formed in an arm portion that supports the holder of the second yoke member. A head is attached to the opening hole of the second connector, and a through opening formed in the base surrounds the arm of the second yoke member, and a connecting tool is provided to engage with the head. Is a vertical length with which the protruding piece of the opening hole of the first yoke member can be selectively fitted. Together with a plurality of forming, on the inner wall top portion of the through opening of the base said second assembly structure of the wiper convex pieces are formed to be seated on arms recess formed in the yoke member.