JPS58199252A - Connector pivotally fitting wiper arm to wiper blade - 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 in a connector for pivotally connecting a wiper arm to a wiper blade.

The provision of a single connector that can pivotally connect different types of wiper arm ends to different types of wiper blades has proven commercially advantageous.

Most wiper arm ends can be divided into 1a# type and hook type. The straight type is a flat steel bar of nominally rectangular cross section with a small locking protrusion on the top surface (also known as the bayonet type).

The hook type is also a flat steel bar of nominally rectangular cross section, but with an upper straight section that is continuous with the main section of the arm and a lower section that is parallel to the upper section and connected to the upper section by a 180 bent intermediate section. have. The lower straight sections are separated by apertures or slots that engage the launches, such as in a U-hook type, and are separated by a Ducellier.
It has two side-by-side curved tips that are characteristic of the hook shape.

Each of these straight and hooked shapes of the arm end can be a pivot pin that spans the central opening of the main yoke of the wiper blade as in a straight mounting, or extends laterally from the wiper blade as in a lateral mounting. It is pivotally connected to the pivot pin by a suitable intermediate connector.

Additionally, each of the arm ends of the 5 types may or may not be cranked downward, i.e.
They are classified according to whether they have ends that are parallel to the adjacent main part of the frame or that are sloping downward. The need for the end of the arm to be cranked downwards occurs, particularly for straight ends, for overlapping onto a suitable wiper blade. The downward cranking provides adequate machining clearance for rotation between the wiper blade and the arm.

Patent application GB2073583A, published in the United Kingdom, discloses a connector having a selective bearing that receives a pivot pin across an aperture in a wiper blade.

One of these bearings is higher than the other and is used when the connector can be applied to a hook-type arm. This connector then occupies a lower working position in the clearing defining the opening. Nevertheless, there is adequate clearance between the main body of the arm and the blade to allow rotation during machining without the need to crank the end of the arm downwards. The underside of the bearing is useful for lifting the connector into a machining upright position that protrudes far enough above the wiper blade to allow the straight arm to turn during machining without having to crank the arm end downwards. Ru.

However, the first one-point connector of the present invention for pivotally connecting the wiper arm end to the wiper blade is
a bearing for receiving a pivot pin supported by the wiper blade; and a first mating surface for engaging a first launch means for positioning and retractably securing each hook-shaped wiper arm end. and a second guide having a second mating surface for engaging a second launch means for positioning and releasably attaching each linear wiper arm end; 2
The first guide is inclined with respect to the first guide.

Therefore, the first aspect of the present invention is to make the connector compact in size during construction, and in addition, the one-layered wiper blade has a straight arm end and is curved downward in a crank shape. The connector can be provided with the above-mentioned processing +1J11II even when it is not present.

In addition, it is possible to provide a single connector that can be fixed to a wiper arm end of a certain size, especially a rod having a certain width, and hook shapes of different sizes, where the curved part of the hook has a correspondingly different radius of curvature. It is also known to have commercial advantages.

Patent application GB2076586A, published in the United Kingdom, discloses a connector for stacking onto wiper blades to which different sizes of hook-type wiper arm ends can be applied. Two latch pawls are formed opposite each other on the elastically deformable measuring part of the connector.

During the first stage of assembly, the curved part of the hook passes between the pawls and pushes the pawl and the first wound part into a regular position. Due to the elasticity of the side parts, the pawl locks with the outer curved surface of the hook when the hook moves to its final upright position on the connector. The connector is then rotated into the processing position between the walls of the blade opening, so that the connector is rotated into the blade opening until the side parts are released from the blade and are freely bent outwards by the hooks before assembly with the arm. must be rotated within.

However, a connector for pivotally connecting a wiper arm end to a wiper blade according to a second aspect of the invention includes a bearing for receiving a pivot pin supported by the wiper blade, and a pair of bearings in a plane parallel to the longitudinal axis of the bearing. and another set of mating surfaces in a plane perpendicular to the longitudinal axis of the bearing, and the two sets of mating surfaces are stepped and Ducellier hook-shaped wiper arm ends of different sizes. It is combined with a launch means for positioning and removably accommodating a selected one of
ellier) characterized by a pair of fingers having lateral elasticity for snapping launch engagement with the side-by-side tips of the farm end.

A second aspect of the invention is therefore convenient for assembly, in that the pair of resilient fingers are deflected outwards even when the connector occupies a normal force-retracting device between the side walls or flanges of the wiper blade. The key is to design the connector in such a way.

Preferably, not only different types but also different sizes of arm ends can be accommodated by a single connector, and to this end each of the first and second aspects of the invention is combined with the other aspects of the invention. It is embodied in a connector that further embodies the classified feature or characteristic point.

In fact, the recommended connectors are one size straight type at the end of the arm, as well as two different sized Du'cellier hook types at other times.
Applicable to U-hook shapes of three different sizes.

The connector according to one or both of the first and second aspects of the invention is preferably integrally molded from a plastic material.

Two connectors will now be described by way of example with reference to the accompanying drawings.

Before describing the two connectors, it is convenient to draw attention to the salient features of the various types of wiper arm ends and wiper blades that are pivotally connected by the two connectors.

The straight wiper arm end (FIG. 1) has a small arm protrusion B on the top surface of a flat steel bar of nominally rectangular cross section. The broken line shows a configuration in which the arm end is cranked downward, ie, inclined downward from the adjacent main portion A of the wiper arm. In the case of a hook-shaped arm end (Fig. 2).

(Fig. 6), the nominal rectangular cross section is the straight part T at the top.

This is a hook with a lower straight portion parallel to curved portions C and T. The lower straight section is provided with an opening O, in the form of a U-hook (Fig. 2), or the downwardly curved side-by-side tips are separated by longitudinal slots S, as in the Ducellier hook form. (Figure 6).

The stackable type wiper blade (FIG. 4) has an inverted channel main yoke Ye with a pivot bin Fff spanning the central opening between the uprights.

The side-sealing type wiper blades (not shown) are the same as the stacking type, but the pivot bins extend laterally from the outside of the main yoke.

The connector 10 according to the first aspect of the invention is integrally molded from a plastic material (FIGS. 85-8). Connector 1
0 can be considered as having block-shaped woody plants 12. The bearing 14 extends from the l+111 surface of the main body 12 to the side surface and has a gearing 16 located above the pivot pin of the wiper blade.

The top, left side, and bottom of body 12 are adjacent abutment surfaces 18 that lie in a plane parallel to longitudinal axis 20 of bearing 14 (as seen in FIG. 6). The joint surface 18 is in contact with the yellow flange 22, which is the opposing joint surface 24 in a plane perpendicular to the anatomy 2U.

The groove formed by the joint surface 18, 24 constitutes a first guide that allows the U-hook type wiper arm 4k receiver of a specific size to be inserted and firmly fixed to the connector.

The very top and left side of the body 12 (as shown in FIG. 6) is recessed with an abutment surface 26 lying in a plane parallel to the longitudinal axis 20 of the bearing 14. The IJ 26 is adjacent to the opposing joint surface 28 in a plane perpendicular to the axis 20. Joint surfaces 18, 24, 26.28
As a group, they form a 1'4 step shape. The straight and curved portions of the smaller sized U-hook type wiper arm end portion 1flA are positioned snugly in the grooves formed by the abutment surfaces 26, 28 which optionally constitute the first guide.

The U-hook type wiper arm end of either size is positioned by a recess 62 in the body 12 and has a resiliently deflectable tongue 60 which engages a projection 64 that snaps into an opening in the lower straight portion of the arm end. By means of the latching means consisting of, as described above, the samurai, which is perfectly positioned, can be removed from the costa 1U and attached to the machi sushi.

When the connector 10 is assembled to the connector 10, the lower right end of the arm end shown in FIG. 2 engages with the inclined lower surface of the protrusion 64 shown in FIG. When pulled, it deflects the tongue upwardly from its unstressed position into the recess 62 of the body 12. The protrusion 64 snaps into launch engagement with the opening O in the arm when the arm is seated in the final position of the connector.

The connector also includes a second guide suitable for receiving and positioning the sized straight arm end. This second guide consists of a passage of rectangular cross-section extending through the body 12 at an angle to the alternatively selected first guide as shown in FIG. M6. This passage is defined by opposed parallel abutment surfaces 66 in a plane parallel to the longitudinal axis 2U of the bearing 14 as well as by opposed parallel abutment surfaces 1IIi, 58 in a plane perpendicular to the longitudinal axis 20 of the bearing 14. l/Ihy, has been done. The opening 40 extends from a portion of the body 12 (as shown in FIG. 6) and opens into the passageway facing the upper 11Ill junction 66. Two thrifts 42 (Fig. 47) extend from the bottom of the body 12 (as seen in Fig. 6) and extend from the bottom of the body 12 (as seen in Fig. 6) to one outlet through the lower abutment surface 66 to form a tongue 44. . During assembly with a wiper arm having a straight end, this tongue piece 44 is elastically deflected from an unstressed position in the direction F (as shown in FIG. 6).

When the arm is moved to the final position of the connector, the projection snaps into launch engagement with the aperture 40 and the tongue returns to its unstressed position, retaining the projection in the aperture.

The second guide defined by the joint surfaces 66 and 68 is
It is important to note that the abutment surfaces 18.24° forming the groove are inclined relative to the guide constituted by 26.28°.

The advantage of tilting the guide (Fig. 8) is that even when the end of the wiper arm is straight and not bent downward in a crank shape, an appropriate machining allowance W is provided, and the wiper arm A
The main part of the wiper blade of the overlapping type can be rotated relative to the main yoke Y (t7) of the wiper blade, its pivot pin R is inserted into the bearing 14, and its upright flange F is especially 46 to provide lateral support when chamfered and to largely hide the connector 10.

It should also be noted that both hook-type and straight-four type arm ends can be applied to the connector using only one bearing.

This factor and the slope of the guide allow the connector to be made compact. Furthermore, the second guide does not intersect with the bearing 14, but the straight portion of the first guide? The tongue 60 can be easily compacted by orienting the second guide so that it is open and the tongue 60 is positioned between the bearing 14 and the second guide.

In order to improve the stability of the smaller sized hook-shaped arm end positioned in the groove formed by the abutment surface 26,28, the abutment surface 28 is of larger size closer to the main part of the wiper arm. This means that the joint surface 18
This is achieved by slanting the joint surface 18 upwards, as shown in FIG. 6, as it approaches the chamfered surface 46. When assembling a larger size U-hook type arm end into the groove formed by the joint surfaces 18 and 24, the top and lower straight portion of the wiper arm end may be slightly widened.
Ru.

The connector 5u according to the first and second aspects of the present invention (FIGS. 9 to 11) is also molded from a single piece of plastic material. In fact, connector 50 has all of the features described above with reference to connector 10. In addition to the aforementioned uses, the connector 5 is used to position and removably attach a selected one of two differently sized arm ends of the Ducellier hook type to the connector 50.
0 further includes latching means 1c constituted by a pair of fingers 52 having transverse elasticity. Each finger 52 snaps into latching engagement with a respective tip P of a Ducellier hook-type (illustrated in phantom) arm end. The protrusion 64 is received in a longitudinal slot separating the tips P of the arm ends. Each finger 52
is L-shaped, its body 54 is integral with the main body 12, and the L-shaped
The arm of the profile has a free end 56 extending away from the area of the bearing 14 and sloping towards the corresponding arm of the other finger 52, with the body and arm of the valley finger has transverse elasticity. The resilient fingers 52 are bent outwardly by the lower arm of the Ducellier hook end when the connector 50 is moved to its final position, even when the connector 50 occupies the working position of the wiper blade 10, thereby preventing assembly. Attachment becomes more convenient.

Obviously, modifications can be made to the connectors described above, for example, the connectors may be of a less skeletal construction so as to provide a uniform mating surface, and indeed some of the surfaces described above may be modified or curved. It can be omitted if sufficient positioning can be achieved by the joint surface.

Any of the previously described connectors must be formed with a thicker flange 22 to withstand the lateral loads imposed by wiper arm operation if lateral mounting is to be used with a wiper blade of the type. Furthermore, horizontal mounting is possible with a shaped wiper blade, but a more convenient way to hold the connector in line with the wiper blade is by turning over the pivot pin 4, so that the bearing 14 is a cylindrical hole. Safety is improved by eliminating the guying 16 in each connector.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the end of a linear wiper arm. FIG. 2 is a perspective view of the end of a U-hook type wiper arm. FIG. 6 is a perspective view of the end of a Ducellier hook type wiper arm. FIG. 4 is a perspective view of the central portion of the wiper blade with overlapping type. FIG. 5 is a top plan view of a connector embodying the first aspect of the invention. FIG. 6 is a longitudinal sectional view taken along the line Vl-Vl in FIG. 5. @Figure 7 is a lower plan view of the connector in Figure 5. FIG. 8 is a schematic diagram of the connector of FIG. 5, shown in longitudinal section, for fixing the wiper arm of ti, @l, which is fixed to the wiper blade of the overlapping type and cannot be cranked downward; FIG. 9 shows a connector embodying the first and second aspects of the present invention,
Top plan view of Kuta. FIG. 10 is a longitudinal sectional view taken along the line XX of the FIG. FIG. 11 is a bottom plan view of the connector of FIG. 9; 10, 50... Connector, 12... Main body, 14.
...Bearing, 16...Gap, 18.2
4, 26, 28, 36. 68... Joint surface 20... Shaft, 22... Flange 60... Tongue piece, 62... Hollow, 64
...Protrusion, 40...Opening, 42...
Slit, 44... tongue piece, 46... chamfer,
52...Finger. Patent applicant Trif Forbers Ltd.
given name)

Claims (1)

[Claims] 1. The bearing circle supported by the wiper blade and receiving the telescopic pivot pin and the end of the hook-shaped wiper arm are respectively positioned and removably attached.
A first guide (18, 24; 26, 28), consisting of a first joint surface engaged with a launching means (3Ll; b2),!
:, second latching means (40, 44) for positioning and removably attaching the straight fIs type wiper arm ends, respectively.
) and a second guide (
56, 38), wherein the second guide is inclined with respect to the first guide. 2. The connector according to claim 1, wherein the second guide extends in a direction that does not intersect the bearing. 6. A connector according to claim 1 or 2, characterized in that the launch means engaging the first guide is positioned between the bearing and the second guide. 4. The connector according to any one of claims 1 to 6, wherein the second guide comprises a passage that opens through the straight portion of the first guide. 5. The first guide has a pair of first joint surfaces (18, 26) that are in a plane parallel to the bearing's longitudinal axis (2G) and a pair of first joint surfaces (18, 26) that are in a plane perpendicular to the bearing's longitudinal axis (zl). The other set of first joint surfaces (24, 21:I) are provided, and the two sets of first joint surfaces collectively position a selected one of hook-shaped wiper arm ends of different sizes in a step-like manner. 6. The connector according to any one of claims 1 to 4, characterized in that: 6. the first joint of the set of ponds that contacts the end of a relatively small hook-shaped wiper arm; D1i (281 is a connector as described in Patent 1. Acceptance range IQ 5, characterized in that it has a larger size near the main four parts of the wiper arm. Z The launch means that engages with the first guide is a U hook a resiliently deflectable tongue (1301) snap-launching into an opening (0) in the wiper arm end of the mold;
Claims page 11-'
The connector according to any one of item 6. 8. The launch means that engages the first guide is the deuse 1
A pair of fingers (52) having lateral elasticity that snap into launch engagement with the horizontally arranged tips P) of the end of the fiber arm.
111j out of claims 1 to 7, which include the following: 111j] The connector according to claim 1. 97 seven fingers are inclined toward each other at the free ends (
b6) The connector according to claim 8, characterized in that the connector has the following features: 10. Connector according to claim 88 or 9, characterized in that the fingers have free ends (56) extending over the bearings. 11. The fingers have an L-shaped part, a body (54) of the L-shaped part integral with the connector, and a free end extending away from the region of the bearing and inclined towards the corresponding arm part of the other finger. 9. A connector according to claim 8, characterized in that the body of each finger and the arm have lateral elasticity, including an arm of the L-shaped part having a section (56). 1, the launch means that engages with the second guide are each formed by a pair of opposing second mating surfaces located in parallel planes parallel to the longitudinal axis tZO of the bearing, and are formed by an elastic force within the plane. It has a tongue I and a south opening 1 that can be deflected, and this tongue has a protrusion (B) on the end of the straight wiper arm.
k - The connector according to any one of claims 1 to 11, characterized in that it can be snapped into place. 15. The connector according to any one of claims 1 to 412, characterized in that it is made of a single piece of plastic material. 14. Bearing Q4J that receives the pivot bin supported by the wiper blade, and a pair of joint surfaces (18, 26) in a plane parallel to the bearing's vertical axis (spring).
and another set of joint surfaces (24, 28) in a plane perpendicular to the longitudinal axis (A) of the bearing, the two sets of joint surfaces forming a step shape with a group of -, and a Ducell.
ier) positioning and removably engaging a selected one of the different sized wiper arm ends of the hook type and releasably engaging the launching means (52), the launching means locating and removably engaging a selected one of the different sized wiper arm ends; A connector for pivotally connecting an end of a wiper arm to a wiper blade, the connector comprising a pair of laterally resilient fingers (52) for snapping launch engagement with side-by-side tips of the wiper arm. 15. Connector according to claim 14, characterized in that the fingers have free ends (56) that are inclined towards each other. 16. Claim 1, characterized in that the fingers extend away from the region of the bearing.
The connector according to item 4 or item 15. The 1Z finger has an L-shaped part, a body (54) of the L-shaped part integral with the connector, and a free end (56) extending away from the region of the bearing and inclined towards the corresponding arm part of the other finger. )? 15. The connector according to claim 14, wherein the connector comprises an arm portion having an L-shaped portion, and wherein the body portion of each finger and the arm portion have a lateral elastic force. 18. Patent claim characterized in that the joint surface (2B) of the set of ponds that contacts the relatively small size wiper arm end of the Oucellier hook type is of a larger size closer to the main pupil of the wiper arm The connector according to any one of the ranges 14 to 17. The latching means also includes a resiliently deflectable tongue (130) that snaps into latching engagement with an opening in the U-hook shaped wiper arm end. 19. A connector according to any one of claims 14 to 18, characterized in that the connector comprises: 20. The connector according to any one of claims 14 to 19, characterized in that it is integrally formed of a plastic material.