CN109677361B

CN109677361B - Adjustable mixed material wiper arm

Info

Publication number: CN109677361B
Application number: CN201910116541.3A
Authority: CN
Inventors: 应徐永
Original assignee: Ningbo Ikd Precision Parts Co ltd
Current assignee: Ningbo Ikd Precision Parts Co ltd
Priority date: 2019-02-13
Filing date: 2019-02-13
Publication date: 2022-07-12
Anticipated expiration: 2039-02-13
Also published as: CN109677361A

Abstract

The invention discloses an adjustable mixed material wiper arm, which comprises a connector and an arm part, wherein the left end part of the connector is provided with a connecting hole, the connecting hole is in a conical shape with a larger upper diameter and a smaller lower diameter, and the connecting hole is lined with a protective sleeve; the arm part comprises a left arm and a right arm which are connected together, and the left end of the left arm is fixed at the right part of the connector; the left end face of the left arm is provided with a jack extending leftwards, the cross section of the jack is rectangular, the longitudinal section of the jack is trapezoidal with a narrower left end and a wider right end, the left part of the side wall of the jack is screwed with a clamping screw, and the upper side wall and the lower side wall of the right part of the jack are respectively provided with an adjusting screw hole; the left part of the right arm is inserted into the jack, the inner end of the clamping screw is matched with the side surface of the left part of the right arm, and at least one adjusting screw hole is screwed with an adjusting screw; the right end of the right arm is fixed with a U-shaped hook in an inserting way. The invention has the advantages that: light weight and long service life.

Description

Adjustable mixed material wiper arm

Technical Field

The invention relates to the technical field of automobile accessories, in particular to an adjustable mixed material wiper arm.

Background

The wiper (WINDSHIELD WIPER) is installed in front of the windshield, and is composed of a motor, a speed reducer, a four-bar mechanism, a wiper arm, a wiper blade assembly and the like, and mainly used for sweeping rain, snow and dust which obstruct the view on the windshield. Wherein, be equipped with the extension spring on the windscreen wiper arm to make the laminating that the wiper blade can be better on windshield. However, after a period of use, as the elastic force of the tension spring is reduced, the wiper blade cannot be attached to the windshield, and the wiping effect is greatly reduced. Meanwhile, the existing windscreen wipers are all made of iron materials, and the development direction of light weight is not met.

Disclosure of Invention

The invention aims to provide an adjustable mixed material wiper arm which has the characteristics of light weight and long service life.

The technical scheme adopted by the invention is as follows: an adjustable mixed material wiper arm comprises a connector and an arm part, wherein the left end of the arm part is fixedly connected with the connector, the left end part of the connector is provided with a connecting hole,

the connector is made of plastic, an iron reinforcing plate is arranged in the connector, meanwhile, the connecting hole is in a conical shape with a larger upper diameter and a smaller lower diameter, and a protective sleeve is lined in the connecting hole;

The arm part comprises a left arm and a right arm which are connected together, wherein the left end of the left arm is fixed at the right part of the connector;

the left end surface of the left arm is provided with a jack extending leftwards, the cross section of the jack is rectangular, the longitudinal section of the jack is trapezoidal with a narrower left end and a wider right end, the left part of the side wall of the jack is screwed with a clamping screw, and the upper side wall and the lower side wall of the right part of the jack are respectively provided with an adjusting screw hole;

and (c) a second step of,

the left part of the right arm is inserted into the jack, the inner end of the clamping screw is matched with the side surface of the left part of the right arm, and at least one adjusting screw hole is internally screwed with an adjusting screw;

the protective sleeve is made of magnesium-aluminum alloy material;

the left arm is made of an aluminum alloy material, and the right arm is made of a magnesium alloy material;

the right end of the right arm is fixed with a U-shaped hook in an inserting way.

The magnesium-aluminum alloy adopted by the protective sleeve comprises the following raw materials in percentage by weight: 20-30% of magnesium, 1-1.5% of titanium, 2-3% of manganese, 3-4% of copper, 2-3% of iron, 2-4% of silicon, 0.2-0.5% of lanthanum, and the balance of aluminum and inevitable impurities.

The left arm comprises the following raw materials in percentage by weight: 8-10% of silicon, 5-10% of magnesium, 0.08-1% of copper, 0.16-0.5% of strontium and the balance of aluminum and inevitable impurities, wherein the content of the impurities is higher than 0.15%.

The right arm comprises the following raw material components in percentage by weight: 3 to 4 percent of tin, 0.2 to 0.6 percent of bismuth, 0.08 to 0.1 percent of dysprosium, 0.05 to 0.08 percent of La0, and the balance of Mg and inevitable impurities.

Compared with the prior art, the invention has the advantages that: light weight and long service life. After the adjustable mixed material wiper arm is used for a period of time, the wiper blade connected with the right arm can be still tightly attached to a windshield by adjusting the included angle between the left arm and the right arm, and the service life of the wiper is prolonged. Meanwhile, according to different stress conditions, the connector is made of plastic, the left arm is made of aluminum alloy, and the right arm is made of magnesium alloy, so that the use requirement is met, the overall weight is greatly reduced, and the anti-corrosion performance is good.

Drawings

The invention is further illustrated with reference to the following figures and examples:

FIG. 1 is a front cross-sectional view of an adjustable hybrid material wiper arm according to an embodiment of the present invention in an exploded state.

In the figure:

10. a connector 11, a connecting hole 12 and a reinforcing plate;

20. the device comprises an arm part, 21, a left arm, 211, an inserting hole, 212, a clamping screw, 213, an adjusting screw hole, 214, an adjusting screw, 22, a right arm, 221, a blind hole, 222 and a jacking screw;

30. A protective sleeve;

40. a U-shaped hook 41 and an insertion part.

Detailed Description

Example, see figure 1: an adjustable mixed material wiper arm includes a connector 10 and an arm portion 20 having a left end to which the connector 10 is fixedly connected. Wherein, the left end of the connector 10 is provided with a connecting hole 11.

Further speaking:

the connector 10 is made of plastic and has an iron reinforcing plate 12 disposed therein. Therefore, the connector 10 has better corrosion resistance and higher strength. Meanwhile, the connection hole 11 has a conical shape with a larger upper diameter and a smaller lower diameter, and the connection hole 11 is lined with a protective cover 30. I.e. after the bolt is passed through the protective sleeve 30, the connection head 10 is connected with the power system of the wiper. Obviously, the protection sleeve 30 is also conical to increase the strength of the connection hole 11 and to facilitate the connection of the connector 10 after the bolt is gradually tightened.

The arm portion 20 includes a left arm 21 and a right arm 22 connected together. Wherein the left end of the left arm 21 is fixed to the right portion of the connector 10.

The right end surface of the left arm 21 is provided with a jack 211 extending leftwards. The cross section of the insertion hole 211 is rectangular, and the longitudinal section of the insertion hole 211 is trapezoidal with a narrow left end and a wide right end. A clamping screw 212 is screwed on the left part of the side wall of the insertion hole 211, and an adjusting screw hole 213 is arranged on the upper side wall and the lower side wall of the right part of the insertion hole 211.

More specifically:

the left part of the right arm 22 is inserted into the insertion hole 211, the inner end of the clamping screw 212 is matched with the left side surface of the right arm 22, and at least one adjusting screw hole 213 is internally screwed with an adjusting screw 214. That is, when the fastening screw 212 is tightened, the inner end of the fastening screw 212 is pressed against the left side surface of the right arm 22, and the left portion of the right arm 22 is fixed in the insertion hole 211. Thereafter, an adjustment screw 214 may be employed. For example, when the adjusting screw 214 is screwed into the adjusting screw hole 213 of the upper side wall of the insertion hole 211, the right end of the right arm 22 tends to be relatively downward; conversely, when the adjusting screw 214 is screwed into the adjusting screw hole 213 of the lower sidewall of the insertion hole 211, the right end of the right arm 22 is inevitably relatively upward. That is, the angle between the left arm 21 and the right arm 22 can be easily adjusted so that the wiper blade fixed to the right end of the right arm 22 is always in close contact with the windshield. Of course, it is also possible to use 2 adjusting screw holes 213 screwed with the adjusting screws 214 to adjust the angle between the left arm 21 and the right arm 22 more precisely.

And (3) optimizing:

the protective sheath 30 is made of magnesium-aluminum alloy material. In the embodiment, the magnesium-aluminum alloy comprises the following raw materials in percentage by weight: 20-30% of magnesium, 1-1.5% of titanium, 2-3% of manganese, 3-4% of copper, 2-3% of iron, 2-4% of silicon, 0.2-0.5% of lanthanum, and the balance of aluminum and inevitable impurities. Proved by verification, the protective sleeve 30 not only has higher strength, but also has better wear resistance, and is extremely suitable for preparing the protective sleeve 30.

The left arm 21 is made of an aluminum alloy material. In this embodiment, the left arm 21 comprises the following raw materials in percentage by weight: 8-10% of silicon, 5-10% of magnesium, 0.08-1% of copper, 0.16-0.5% of strontium, and the balance of aluminum and inevitable impurities, wherein the content of the impurities is higher than 0.15%. The verification proves that the aluminum alloy has better plasticity, high strength and better tensile strength. Since the left arm 21 receives a large supporting force, such an aluminum alloy is not only light in weight but also extremely suitable as the most important supporting member.

The right arm 22 is made of magnesium alloy material. In this embodiment, the right arm 22 comprises the following raw materials in percentage by weight: 3 to 4 percent of tin, 0.2 to 0.6 percent of bismuth, 0.08 to 0.1 percent of dysprosium, 0.05 to 0.08 percent of La0, and the balance of Mg and inevitable impurities. The practical verification proves that the magnesium alloy has lighter weight, better tensile capacity and easy processing, and is suitable for serving as a terminal supporting component.

And (4) continuing optimization:

the right end of the right arm 22 is fixed with a U-shaped hook 40 in a plugging manner. For example, the right end of the right arm 22 is provided with a blind hole 221 extending leftwards, the cross section of the blind hole 221 is square, and the side wall of the blind hole 221 is screwed with a tightening screw 222; the U-shaped hook 40 has an insertion portion 41 extending leftward and having a square cross section, and the insertion portion 41 is inserted into the blind hole 221 from right to left, and then the tightening screw 222 is tightened to detachably connect the U-shaped hook 40 and the right arm 22. Thus, after a period of use, even if the angle between the left arm 21 and the right arm 22 is adjusted by the adjusting screw 214, if the angle may not meet the requirement, the inserting direction of the right arm 22 can be turned by 180 °, and the maximum angle that can be achieved between the left arm 21 and the right arm 22 tends to be larger by means of the bending deformation that is inevitably generated when the right arm 22 is used for a long time. In this case, it is necessary to simultaneously rotate the "U" shaped hook 40 by 180 ° to satisfy the correct orientation of the attached wiper blade.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. Adjustable mixed material arm of scraping, including connector (10) and left end link firmly arm (20) of this connector (10), wherein, the left end of this connector (10) is equipped with connecting hole (11), its characterized in that:

the connector (10) is made of plastic, an iron reinforcing plate (12) is arranged in the connector, meanwhile, the connecting hole (11) is conical, the upper part of the connecting hole is larger in diameter, the lower part of the connecting hole is smaller in diameter, and a protective sleeve (30) is lined in the connecting hole (11);

the arm part (20) comprises a left arm (21) and a right arm (22) which are connected together, wherein the left end of the left arm (21) is fixed at the right part of the connecting head (10);

the right end face of the left arm (21) is provided with a jack (211) extending leftwards, the cross section of the jack (211) is rectangular, the longitudinal section of the jack (211) is trapezoidal with a narrower left end and a wider right end, and the left part of the side wall of the jack (211) is screwed with a clamping screw (212), and the upper right side wall and the lower side wall are respectively provided with an adjusting screw hole (213);

And (c) a second step of,

the left part of the right arm (22) is inserted into the jack (211), the inner end of the clamping screw (212) is matched with the side surface of the left part of the right arm (22), and at least one adjusting screw hole (213) is internally screwed with an adjusting screw (214);

the protective sleeve (30) is made of magnesium-aluminum alloy material;

the left arm (21) is made of an aluminum alloy material, and the right arm (22) is made of a magnesium alloy material;

the right-hand member of this right arm (22) is fixed with "U" type hook (40) through the mode of pegging graft, and the right-hand member of this right arm (22) is equipped with blind hole (221) that extend left, and the transversal personally submitting square of blind hole (221), and the spiro union has a holding screw (222) on the lateral wall of blind hole (221), after using a period, can 180 transfers the direction of insertion of this right arm (22), with the weight percentage, the raw materials component of right arm (22) is: 3 to 4 percent of tin, 0.2 to 0.6 percent of bismuth, 0.08 to 0.1 percent of dysprosium, 0.05 to 0.08 percent of La0, and the balance of Mg and inevitable impurities.

2. The adjustable hybrid material wiper arm as defined in claim 1 wherein: the magnesium-aluminum alloy adopted by the protective sleeve (30) comprises the following raw materials in percentage by weight: 20-30% of magnesium, 1-1.5% of titanium, 2-3% of manganese, 3-4% of copper, 2-3% of iron, 2-4% of silicon, 0.2-0.5% of lanthanum, and the balance of aluminum and inevitable impurities.

3. The adjustable hybrid material wiper arm as defined in claim 1 wherein: the left arm (21) comprises the following raw materials in percentage by weight: 8-10% of silicon, 5-10% of magnesium, 0.08-1% of copper, 0.16-0.5% of strontium, and the balance of aluminum and inevitable impurities, wherein the content of the impurities is higher than 0.15%.