JPS60104438A - Assembling head for wiper piece - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of the invention disclosed in Japanese Patent Application No. 58-55321.

The object of this original patent application is to provide an assembly head for stamping wiper pieces, which provides a reliable connection between the output shaft of the drive mechanism and the mounting of the wiper arm, as well as an assembly head for stamping such a stamping head and the like. The manufacturing method includes a wiper piece with a god-shaped head.

The connection between the rotary output shaft of a drive mechanism for wipers of a motor vehicle and the support strip for each one of these wipers is provided in a mounting fixed to said output shaft and integral with the wiper arm supporting a corresponding support east bank. This may be ensured by means of a wiper part with an assembled head adapted to be pivotally mounted on the wiper part (known in the art).

The purpose of the original patent application is to avoid conventional mold assembly heads, which are expensive not only because of the molding method and relatively expensive materials used, but also because several pieces must be attached to the molded part. It was an attempt to remove the accompanying obstacles.

For this reason, the original patent specification proposes a stamping head that is moderately priced and relatively easy to implement (-) that can be obtained from a flat metal plate by a stamping method. a fastening area for the output shaft, a pivot area for the camping and wiper arms, and an elastic piece applied to the stamping head and the fixture, said fastening area being approximately in the shape of a bean paste. a generally trapezoidal collar having a cross-section of this groove-shaped web portion, and said pivot area is an extension of each wing of said anchoring area to an extension of the groove-shaped web portion of said anchoring area. It has two lateral wings of increased height which are joined to each other by a bottom part located at the bottom, and through these wings two holes are passed through which the fitting (d) is pivotally attached to the main body of the head. It is configured by a stamping head to cut out two approximately coaxial holes, and in the fixing area and the pivoting area, a fastener for the elastic piece is arranged.

However, according to original Patent Application Specification 1W, an assembled head of this type is obtained in the form of a conventional forming head and is arranged and used in the same manner as this forming head. That is, the groove-shaped cross section of the fixed area and the bottom and two lateral wings of the pivot area are:
It opens toward the output shaft. The bottom of the pivoting area, which is located in the extension of the bead-shaped web part of the fixing area, has a curved shape with two rounded sections bent in opposite directions (Xb). This necessitates the use of bent and stamped IC-compatible G-J molds, complicating manufacturing.

The present application seeks to modify the assembly head according to the original patent application so that it derives maximum benefit from stamping and avoids unnecessary similarities in shape to conventional molded assembly heads. be. According to the invention, the stamping and assembly head as described in the original patent application has a substantially lattice-shaped cross-section of said fixing area, a bottom part of said pivoting area and a substantially lattice-like section separated by two side wings. The miso-shaped shape is characterized in that when a cap covering the assembly head is placed on the head, the opening opens upward toward the cap.

In this case, the web part of the groove-shaped fixing area and the bottom of the pivot area, which are arranged in extension of each other, are advantageously constructed by a common flat web part. In this case, manufacture is simplified and it is possible to make it economical to obtain a bottom connecting the two lateral wings of the pivot area with curved opposites.

A fastening for the elastic piece can then be formed in a very practical manner by means of a simple hole drilled in the common web section approximately between the fixation area and the pivot area.

Advantageously, a slot is arranged in the bottom of the pivoting area, this slot opening at the end of this bottom located opposite the fastening area and allowing the end of the elastic piece to pass through. be.

One wire end of this elastic piece is hooked into the fastener, that is, the hole, as in the case of the original 11th patent application specification.
The other wire end "11b" is preferably constituted by a tension spring hooked to a wiper arm fixed to the fixture.

By analogy with the embodiment of the original patent application, the trapezoidal conical collar provided on the groove-shaped web part of the fixing area has the smaller base of the conical truncated in the inwardly deformed part of the groove-shaped web part of the fixing area. It can also be installed with the help of 1. However, according to a simpler embodiment, this approximately trapezoidal collar is attached via its larger base to the serpentine web part of the fastening area and extends in the direction of the opening of the serpentine part of this area. The collar can also be connected to the fixing area via a rim formed by a bead-shaped fold of a sheet metal. This rim protrudes in the direction away from the bezel-shaped opening of the assembly head. When the joint is effected by its large base, the small base projecting in the direction of the fixing area can be surrounded by a flange approximately parallel to this fixing area. According to this patent, a simple method is provided for obtaining a collar with folded rims as described above.

As in the original patent specification, the outside of this assembled head is provided with a groove in the longitudinal edge of at least one lateral wing of the pivot area. It is adapted to receive a gripping link fitting located on the corresponding inside side of one of the wings.However, according to a feature specific to the invention, this miso is adapted to connect the corresponding lateral wing to said pivoting fitting. extending from the longitudinal edge adjoining the bottom of the area. In this way, the elastic gripping connection of the cap to the head allows a better fixation, since this miso This is because it is placed in a highly rigid head portion.

Also, by analogy with the assembled head of 43, each one of the lateral wings of the assembled head can also be pivoted to this head with a gap pivot ()' aligned with the axis gland. Separate the semicircular misohole. It extends into the L-shaped knotweed. However, according to a feature specific to the invention, each one of these slots is located not at the bottom edge of the pivoting area by means of a corresponding knot, but at the edge of the corresponding wing located opposite the anchoring area. It is separated by The edge of each tab located opposite the corresponding slot extends approximately 16 degrees to the bottom of the pivot area. In this way, the inner part is relatively wide, ensuring a connection with the bottom of the pivoting area, and the tabs give good stiffness to each tab? 4) It will be done. What is this:?
It is particularly advantageous if the free end of each tab is folded back at right angles to form a bevel against the inside of the fitting, as in the original patent specification.

In order to facilitate the installation of the pivot pin, as in the case of the specification of the original application No. 1.71, a pivot pin is provided in each of the substantially coaxial holes arranged in each individual part of the pivot area. A collar with an inner diameter slightly larger than 1/2 inch is provided. The collar preferably forms a spacer between the cap and the assembled head at the level of the pivot point towards the outside of the head.

The object of the invention is also to provide two transverse holes in each wing of the pivoting area as well as a hole corresponding to the collar of the assembly head fixing area and possibly also a The workpiece is made from a ductile metal or alloy material by stamping with a punching operation to produce a held tab, and then the formation of the collar of said fastening area and possibly the collar of this fastening area. said collars provided on each wing of said pivot area after inverting the workpiece, such that said collars are formed by metal whirling when said collars are external; The collar of the pivot area is shaped into a suitable conical shape by rotating the workpiece, and the workpiece is then bent with a jig so that a general assembled head shape with a groove-shaped cross section is obtained. , a method for producing an assembly spatula 1 for a wiper part, which comprises performing a punching operation with the jig between the fixing area and the pivoting area to form a catch for the spring. According to the characteristics of this manufacturing method, the tip is directed towards the inside of the assembly head between the bottom of the pivoting area and the web part of the fixing area.
It will form a glyph-shaped notch, so do not set it to 5. This manufacturing method involves punching holes in the "reason web" part of the assembly head.
It is characterized in that the fastener is formed by punching a through hole in the web part for the wire end of the spring.

If the collars provided on the side wings are internal collars, these internal collars are formed by bending the workpiece with a jig having a horizontal hole of an appropriate diameter and then bending the workpiece as described in the original patent specification. It can be formed as follows.

Similarly, as described in the main patent specification, in a preferred embodiment of the process of the present invention, two workpieces are cut out of the stock with the "-" inverted relative to each other, and at the end of the forming operation. The two workpieces are then separated by cutting the workpiece connection area formed by the end of each tab of the pivot joint area of the assembly head thus formed. consists of things.

It is an object of the present invention to provide a wiper arm mount which has the effect of reliably connecting the output shaft of a drive mechanism and a wiper support strip, and which is fixed to the output shaft and supports the wiper support strip. In the wiper part having an assembled head pivotally attached to the wiper part, the assembled head is provided on the wiper part constituted by the above-mentioned head.

Embodiments of a wiper piece assembly head according to the present invention will be described in detail below with reference to the accompanying drawings.

In the embodiments of FIGS. 1, 2, 6 and 4, the same reference numerals are used for similar or corresponding parts of the drawings of the original patent application. The assembly head 1 according to the invention comprises a fixing area 2 for the axis of the wiper morph and a pivoting area 3, in which the fork-shaped end of the wiper member 4 and the head 1 are provided. It is designed so that it is pivoted to cover the character f5. The fixation zone 2 is substantially groove-shaped in its transverse plane and opens towards the camp 5, that is to say upwards in FIGS. 1 and 3. This square-shaped web portion is provided with a conical trapezoidal collar 6 on its inside. color 6
is connected to the groove-shaped web part via its larger bottom side and extends towards the cap 5. The height of the collar 6 is lower than the height of the rounded edge of the fastening area 2. The pivot area 3
is located in the extension of the fixed j area 2 and has two lateral wings 7.7. Each of the wing parts 7 has a part L and a main part slightly sandwiched in front, a part almost parallel to each other, and is joined to each other by a flat wafer γ-IX part 8. The web part 8 constitutes at the same time the groove-shaped web part of the rigid section 2 and the bottom of the pivot area 3. The pivot area 3 is also groove-shaped and formed by two lateral wings and its base. A circular hole 7 a % 7 b is arranged in each one of the side wings 7 . Each hole 7a, 7b is circumferentially terminated by a collar 22 which projects outwardly from the head 1 and is coaxial with a corresponding outer 13 collar 22 provided on the other wing 7. Each wing 7 is extended by a tab 9 having right angle bends 9), 9b at its ends. Each support tab 9 has a semi-circular slot 23 centered on the common axis of each outer collar 22, with the edges 20 of the offset lateral wings 7 opposite the fixation area 7. The edge of each comb 9 opposite the slot 23 is perpendicular to the flattened web portion 8 and extends each tab 9 to its upper end via a corresponding portion to the wafer portion 8 and at a corresponding right angle. The longitudinal edge 10 joining each one of the wings 7 to the web part 8 has a groove 10a arranged on the outside of the corresponding wing 7. Yes. Groove 10a is cap 5
When the cap 5 is in a position covering the assembly spatula 11,
It is designed to receive an elastic grip interlocking fastener A5a provided on the corresponding inner wall. A hole 11 is drilled in the flat web part 8 between the fixing area 2 and the pivoting area 3. The hole 11 is designed so that the wire end 16a can be hooked onto the tension spring 16. The other wire end 16b of the spring 16 is adapted to be hooked into a hole 17a provided at the end of the wiper arm 17. The wiper arm 17 is fixed to the web portion of the fixture 4 with a rivet 17b. A longitudinal slot 18 is cut out in the flat web portion 8 to allow the wire end 16a of the spring 16 to pass through. are doing.

The assembly head 1 is obtained by stamping a ductile metal material. Cut out two workpieces of appropriate shapes upside down. These workpieces are punched out at the same time with connecting areas placed between them, and these workpieces are cut out for each tab 9 of the two assembly heads to be made; Pivotal attachment of spatulas r [each wing part 702 horizontal holes 7as in area 3]
7b and a hole corresponding to the collar 6 of the fastening area 2 of each assembly head and K to form a flattened web portion 8.
1. - the cutting out of two head holes 11 and slots 18 in the workpiece part. The collar 6 of the fastening area 2 is then shaped by metal whirling. Collar 6 will have a suitable conical shape. The two workpieces are then turned upside down and fitted with external collars 22 provided on each wing 7 of the pivot area 3.
is formed by rotating metal. Next, bend each workpiece with a jig so that the assembled head 10 has a dog-shaped groove shape. The connection of the two workpieces held until the end of the forming operation (areas cut at each tab 9 of the pivot area 3 of the two 5-stand heads thus formed)
constitutes the end of the

The assembly head 1 assembles the cap 5 and the locking tool 4 using the pivot pin 12. The pivot pin 12 is connected to the external collar 22
It fits inside and is fixed by crimp action. Each external color 2
2 constitutes a spacer between the cap 5 and the head 1 at the height of the pivot portion. Then the two ends of the spring 16 are
Pull the wire end 16a of the spring 16 into the hole 11 and the hole 17a of the arm 1γ, being careful to pass it through the longitudinal slot 18. The pressure for positioning this fiber piece on the car is
A shaft 1 which is press-fitted via a collar 6 of a fastening area 2 onto the threaded part 13a of a shaft 13 for driving the assembly head 1 by means of a wipermorph and fitted with a fastening nut 14.
The threaded end 131) of 3 is made to protrude from the assembly head 1. It has been found that during the mounting of the shaft 13 of the assembly head 1, the cap 5 can be deflected aside by pivoting about the pivot pin 12. The reason may be that the cap edge closest to the pin 12 slides in a semicircular slot 23 partitioned between the tab 9 and the edge 20 of the side wing 7. This movement of the cap 5 also occurs when the fitting 4 is rotated 5 about the pin 12 to remove the wiper solade from the windshield.

Figures 5, 6, and 7 show the fixed 1st area color ~ 6.
Two variants are shown. Figure 5 is a cross-sectional view similar to Figure 4. As shown in FIG. 5, the FgI defined area 102 cooperates with a trapezoidal collar 106. The collar 106 has a fixed area 102 attached to the collar 10.
6 through the small bottom surface (~.This connection is
Rim 140 protruding from the side of the miso-shaped hole of the assembly head
This is done by forming a The rim 140 is constituted in this case by folding a sheet with a womb-shaped cross section. Filed by the inventor on August 4, 1986, French Patent Application No. 8, No. 1
No. 2,815 describes an easy way to install such a collar with a rim. The can 106 extends toward the larger bottom surface beyond the plane of the seat forming the fixation area.

FIG. 6 shows another variant of the collar of the fixation area.

The fixed area 202 is provided with a trapezoidal conical sash 206 that joins the area 202 through the bottom surface of the larger collar. The collar 2 ("6) projects in the direction of the serpentine-shaped opening of the assembly head. The collar 206 terminates at the level of its smaller bottom side in a peripheral flange 240. The plane of the flange 240 almost parallel to the plane.

FIG. 7 shows a modification to FIG. In this variant, the fixation area 302 is provided with a trapezoidal collar 306 having a smaller base on the side of the wrench-shaped opening that constitutes the assembly head. The area around the collar 306 is as follows.
A rim 340 is configured with an upper side generally parallel to the seat of the fixation area 302. The cross section of this sheet at the height of the rim 340 has a miso-shaped shape. The outside of this miso shape is
Almost perpendicular to the womb-shaped web portion, the inner side is slightly inclined so that its ends rest on the outside.

In the three variants shown in Figures 5 to 7, Nut 1
The depressed collar portion of No. 4 is widened by forming the space A 140, or by forming the flange 240, or by forming the rim 340, so that the nut can be applied to the collar over a wide area. be. This is favorable in terms of efficiency in some cases. Furthermore, the rim 140 or rim 340 is used to prevent the nut from loosening.
Alternatively, the sushi may be attached to the flange 21O.

Although the present invention has been described above in detail with respect to its embodiments, it goes without saying that the seed lines of the present invention can be modified without departing from its spirit.

4. The invention according to the additional related original patent application is that the assembly head 1 is formed by a stamping head, the fixing area 2 of the assembly head 1 has a substantially groove-shaped cross section, and this groove-shaped web has a substantially truncated shape. A cone] 1 corner 6 is provided, and the pivot 1 or 3 of the assembly head 1 is provided with a 2-pin side flange 7 and a fixing structure collapse 11 for the elastic device 16 at the extension of the flange of the fixing area 2, and these The side flanges 7 are interconnected by means of a l-bottom phase which increases gradually in height and are arranged in the abrasive lengths of the groove-shaped webs of the fastening zone 2, and furthermore the wipers are assembled together with the wiper members 4 in these side flanges. Two substantially concentric holes 7a17b are cut through which pins 12 for the head 1 to pivot, and the fixing structure 11
In contrast, the present invention provides an assembly head for a windscreen wiper member characterized in that this is disposed between the fixed area 2 and the pivot area 3.
゜202.302 almost groove-shaped cross section and pivot area, area 3
The bottom part and the substantially groove-shaped shape partitioned by the two side wing parts 7 open toward the cap 5 when the collar 7°5 which covers the assembled head body 1 is attached to the head body. There is a wiper part assembly head characterized in that the wiper part assembly head is characterized in that
It satisfies the provisions of the subparagraph.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the assembly head of the present invention;
The figure is a reduced plan view of the assembly head in Figure 1, and the figure 2 is the
The assembly head shown in the figure works together with the 9479 pieces to cap 0.
A vertical cross-sectional view showing the 4th Pl is IV- in FIG. 2.
■It is an enlarged sectional view along the line. Figures 5, 6 and 7
The figures are cross-sectional views of different variations of the collar of FIG. 4. 1... Assembly head, 2, 102, 202, 3
02. Fixed area, 3. Pivot area, 4. Mounting tool, 5
・Cap, 6, 106, 206, 306...Collar, 7.. Wing part, 7 a + 7 b-. Hole, i i- hole, 12.. IJ'n, 13.. Output shaft, 16.・Tension spring, 17 wiper arm. Procedure amendment 1! ((Method) Filed on December 18, 1980 ¥ [Director General of the Office 1, Indication of the case 1980 Patent Application No. 161441 3 Person making the amendment Relationship to the case Patent application Artificial Kipman, Automobile, Marchal 4th Director 5 Yumi-Tameike Tokyu Building, 1-14 Akasaka E-chome, Minato-ku, Tokyo Date of amendment order: November 7, 1980 (November 27, 1980)
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Claims (9)

[Claims] (1) a fixing area for the output shaft of the drive mechanism, a pivoting area for the cap and wiper arm in some cases, and an elastic piece that rests on the assembly head body and the fitting, the fixing area being approximately This groove-shaped ouaizo portion having a groove-shaped cross section is provided with a generally trapezoidal collar that presses down onto the sushi-attached portion of the shaft, and the pivot area is attached to an extension of each wing of the fixed area. This fastening area has two lateral wings of increased height joined together by a bottom part located in the extension of the ouezo part of groove-shaped cross section, to which the said fittings are assembled and pivoted to the head body. a stamping head for cutting out two substantially coaxial holes through which pins are adapted to be fitted, and a fastener for the elastic piece is disposed in the fixing area and the pivoting area; In the assembly head of the wiper part, which provides a reliable connection between the output shaft of the drive mechanism and the support strip of the wiper, the substantially dovetail-shaped cross-section of the fastening area and the bottom of the pivoting area and the A substantially groove-shaped shape partitioned by two side wings opens toward the cap when the cap covering the assembled head body is attached to the head body. Wiper piece assembly head. (2) Claim No. 1 characterized in that the bottom part of the fixing area and the pivoting area, which are arranged in mutually extending parts, are constituted by a flat common wafer part.
) Assembled head described in section. (3) The assembly head according to claim (2), wherein the fastener is formed by a hole drilled in a flat common wafer portion between the dowel fixing area and the pivot area. (4) The elastic member, preferably one end of the tension spring, is passed through a slot located at the bottom of the pivoting area and opening at the end opposite the fixing area of this bottom, and the wire end of this spring is Claims (1) to (3) characterized in that one end of the wire is hooked on a fastener, while the other wire end is hooked on a wire arm fixed to a fixture.
) The assembly head described in any of the above items. (5) A semi-conical trapezoidal collar is joined via its larger base to the groove-shaped web portion of the fixation area and extends in the direction of the opening of said fixation area. The assembly head according to any one of paragraph (4). (6) A conical trapezoidal collar is joined to the groove-shaped web part of the fixing area by cutting the bottom side of the collar on its smaller side, and this joining is performed through a peripheral rim projecting above the fixing area. An assembly head according to any one of claims (1) to (4). (7) Assembly head according to claim (5), characterized in that the small bottom surface of the collar is extended by a flange in a plane approximately parallel to the plane of the fixing area. (8) At least on the outside of one of the lateral wings of the pivoting area, from the longitudinal edge of the connecting part of this wing to the bottom of the said pivoting area, and in this miso, the wing of the cap Claims (1) to (7) are characterized in that the grip-related device is arranged inside one of the grips.
The assembly head described in any of the paragraphs. (9) Each one of the lateral wings of the assembled head is bounded by a corresponding edge of said wing opposite the fixation area with a semicircular slot centered on a pivot pin to which the cap can be pivoted. The tab is extended substantially perpendicularly to the bottom of the pivot area at the edge opposite the corresponding slot of the tab. The assembly head according to any of paragraph (8). GO) A collar with an inner diameter slightly larger than the pivot pin and preferably directed toward the outside of the head is provided in each of the holes that are approximately coaxial with each other. A (↑ vertical head) according to any one of claims 11 to (8), characterized in that a spacer is formed at a height position of the pivot area from a ductile metal or alloy material by stamping with a stamping operation to produce two transverse holes in each wing of the assembly head, as well as a hole corresponding to the collar of the assembly head fixing area and possibly a rad tab for the assembly head. make processed products,
Next, the collar of said fastening area and possibly also each collar provided on each wing of said pivoting area, preferably externally, after the formation of said fastening area collar, after inverting said workpiece, are then attached. The collars in the pivot area are shaped into a suitable conical shape by whirling into the workpiece, so that each collar is formed by whirling metal when the collars are external, and then Then bend the workpiece with a jig so that the general assembly head shape with a groove-shaped cross section is obtained, and perform a punching operation with the jig between the fixing area and the pivoting area to insert a fastener for the spring. consisting of forming
In the method for manufacturing a wiper piece assembly-C head according to claim (4) as claimed in claim (2), the spring fastener is attached to a common web of the assembly head P. 1. A method of manufacturing an assembled head, comprising: punching a hole in the common web portion; and punching a slotted hole through the common web portion for passing the wire end of the spring. (1) An assembly head is provided which is fixed to the output shaft of the drive mechanism, and this assembly head is attached to the output shaft of the drive mechanism which is pivotally connected to the J tool. The use of the head according to any one of claims (1) to (9) as an assembled head in the wiper part connecting between the wiper support strip j″l Characteristic wiper piece.