CN113085786A

CN113085786A - Connecting structure of metal plate stamping arm seat and arm plate of wiper system

Info

Publication number: CN113085786A
Application number: CN201911344422.XA
Authority: CN
Inventors: 罗斌; 袁辉; 熊全芹
Original assignee: Guiyang Wanjiang Aviation Electromechanical Co ltd
Current assignee: Guiyang Wanjiang Aviation Electromechanical Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2021-07-09
Anticipated expiration: 2039-12-23

Abstract

The utility model provides a connection structure of wiper system panel beating punching press arm seat and arm board, includes arm seat part (100) and arm board (300), its characterized in that: the arm seat component (100) comprises an arm seat main body (110), wherein a raising structure (112) is arranged at the head of the arm seat main body (110), and the raising structure (112) is used for enabling the arm plate (300) to lean against the front end sharp edge of the arm seat main body (110) for limiting, namely the surface contact of the two parts is changed into line contact; the tail part of the arm seat main body (110) is provided with a sinking groove (111), and the locking nut (200) is sunk into the sinking groove (111); the small rivets (120) are ground or punched and riveted on the front ends of the arm seat main bodies (110), and the small rivets (120) are bent into an arc shape; the arm plate (300) is connected with the arm seat part (100) in a matched mode through the hook (400) and the rivet (500), the arm plate (300) and the arm seat part (100) rotate around the rivet (500) relatively, and the hook (400) is hung in the middle of the small rivet (120) of the arm seat part (100).

Description

Connecting structure of metal plate stamping arm seat and arm plate of wiper system

Technical Field

The invention relates to a connecting structure of a metal plate stamping arm seat and an arm plate of a windscreen wiper system, which is suitable for arm seat parts of the windscreen wiper system.

Background

The arm seat of the wiper system has two processing modes, namely aluminum alloy or zinc alloy die-casting forming and galvanized steel plate punch forming.

The performance, the processing method and the outline modeling of the punch forming arm seat relative to the die-casting forming arm seat are compared as follows: the existing wiper arm seat is mostly made of die-casting parts, and the die-casting arm seat has porosity. Porosity can reduce the strength of the die-cast arm socket, and in severe cases can lead to part fracture failure. The metal plate stamping arm seat is formed by plastic deformation processing of a steel plate, porosity cannot be generated, and the arm seat cannot be broken when the arm seat is locked on a transmission shaft of the windscreen wiper system. And secondly, after the die-casting arm seat is die-cast, the generated flash and burr need to be removed through a deburring process. Because of manual operation, the die-casting arm seat is easy to generate obvious appearance defects such as contusion, meat deficiency and the like. The metal plate stamping arm seat only has a stamping process, the machining process is completed by equipment, and the state difference cannot occur. The die-casting arm seat has more processes than a metal plate stamping arm seat, and the tolerance accumulation and the rejection rate increase geometrically. The sheet metal stamping arm seat has concise and elegant appearance and concise and attractive internal structure.

The existing stamping arm seat in the automobile market also has a large perfect space, such as: the existing sheet metal stamping arm seat is simple in shape, has large requirements on the space of the automobile body compared with a press casting arm seat, and does not meet the requirement of compact internal structure of the automobile body. Secondly, when the existing sheet metal stamping arm seat is matched with an arm plate part, the contact area is large. The non-spraying area is large after the arm seat and the arm plate steel plate are integrally sprayed, and the wiper system faces huge corrosion risk. And thirdly, in the wiper system, the hook part is hung on the small rivet of the arm seat part, and the small rivet of the arm seat part needs to limit the hook part at the middle position of the arm seat part due to the structural limitation of the sheet metal stamping arm seat part. The existing small rivet processing method is to machine an annular groove in the middle of a small rivet, so that a hook is fixed on the position of the annular groove, the machining cost of the machining process is high, stress concentration is easily formed in the annular groove in the middle of the small rivet, the risk of fracture is generated, and the wiper system fails.

To improve the above problems, the present inventors have made improvements to the arm seat member.

Disclosure of Invention

The invention aims to provide a connecting structure of a metal plate stamping arm seat and an arm plate of a windscreen wiper system, which is additionally provided with a metal plate stamping arm seat sinking groove, so that a locking nut matched with an arm seat part is hidden in the arm seat, and the requirement of the arm seat part on the space of a vehicle body is reduced; the corrosion resistance of the product of the wiper system is improved by improving the matching mode of the arm seat part and other parts in the wiper system; the part shape of the arm seat part is changed, and the processing cost of the arm seat part is reduced when the same product function is realized.

The technical scheme of the invention is as follows:

a connecting structure of a metal plate stamping arm seat and an arm plate of a wiper system comprises an arm seat part 100 and the arm plate 300, wherein the arm seat part 100 comprises an arm seat main body 110, a raising structure 112 is arranged at the head of the arm seat main body 110, and the raising structure 112 is used for limiting the arm plate 300 by leaning against the front end sharp edge of the arm seat main body 110, namely the surface contact of two parts is changed into line contact; the tail part of the arm seat main body 110 is provided with a sinking groove 111, and the locking nut 200 sinks into the sinking groove 111; the small rivets 120 are ground or impact riveted on the front end of the arm base main body 110, and the small rivets 120 are bent into an arc shape;

the arm plate 300 is connected with the arm seat part 100 through the hook 400 and the rivet 500 in a matching way, the arm plate 300 and the arm seat part 100 rotate relatively around the rivet 500, and the hook 400 is hung in the middle of the small rivet 120 of the arm seat part 100.

The arm seat body 110 has smooth transition.

The invention has the characteristics that:

1. the tail part of the arm seat main body is provided with a sinking groove, and the locking nut is sunk into the arm seat main body, so that the exposed height of the locking nut is reduced, and the overall dimension of a product is reduced; although the sink groove structure improves the difficulty of die design, the requirement of the arm seat on the surrounding space environment is reduced, and the density of parts of the automobile body is favorably improved.

2. The front end of the arm seat main body is designed with a raising structure, so that the arm plate is limited by the front end sharp edge of the arm seat, the process of punching convex points at the front end of the metal plate punching arm seat main body is cancelled, and the defects of fine convex points and die loss in punching are eliminated.

3. The cooperation of arm seat part and arm board is: the arm plate and the arm seat part rotate around the rivet relatively, and the arm plate is limited by the structural shape of the arm seat part, so that the limitation of the arm plate is accurate and reliable. When the arm seat part is limited to the arm plate, the surface contact of the two parts is changed into line contact, and the key size of the arm seat structure is stable and easy to detect.

4. Due to the requirement of product work, the hook needs to be fixed on the small rivet of the sheet metal stamping arm seat part in the middle. The existing solution is to machine an annular groove in the middle of the small rivet, and use the annular groove of the small rivet to limit the axial movement of the hook. This patent is through rolling the riveting or punching the riveting back on the arm seat main part with little rivet, and crooked frock is reused, and is curved into the arc with little rivet, makes the couple hang all the time in the middle of the little rivet of arm seat part. The processing method has the advantages of high economical efficiency, stable size and easy detection.

5. The appearance of the arm seat main body is smooth in transition, and the appearance image of the product is favorably improved.

Drawings

Fig. 1 is a schematic structural view of an arm seat part 100;

FIG. 2 is a schematic illustration of the parts engaged with arm seat member 100;

fig. 3 is an external view of the arm base body 110;

fig. 4 is a partial sectional view of sink 111;

FIG. 5 is a schematic view of the arm seat body 110 mated with the lock nut 200;

FIG. 6 is a schematic view of the arm seat member 100 engaged with the arm plate 300;

FIG. 7 is a schematic view of the kick-up structure 112 of the arm base body 110;

fig. 8 is a schematic view of the small rivet 120 of the arm-seating member 100 engaged with the hook 400.

In the figure: an arm base member 100; an arm base main body 110; a sink tank 111; a raised structure 112; a small rivet 120; an arm plate 300; a hook 400 and a rivet 500.

Detailed Description

The following detailed description of embodiments, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1-8, a connecting structure of a metal plate stamping arm seat and an arm plate of a wiper system comprises an arm seat part 100 and an arm plate 300, wherein the arm seat part 100 comprises an arm seat main body 110, a raising structure 112 is arranged at the head of the arm seat main body 110, and the raising structure 112 is used for limiting the arm plate 300 by leaning against the front sharp edge of the arm seat main body 110, namely, the surface contact of the two parts is changed into line contact; the tail part of the arm seat main body 110 is provided with a sinking groove 111, and the locking nut 200 sinks into the sinking groove 111; the small rivets 120 are ground or impact riveted on the front end of the arm base main body 110, and the small rivets 120 are bent into an arc shape;

The arm seat body 110 has smooth transition.

The invention has the characteristics that:

It will be apparent to those skilled in the art that the present invention can be modified in many other specific forms without departing from the spirit and scope of the invention. Accordingly, the present examples and embodiments, therefore, are to be considered in all respects as illustrative and not restrictive, and the invention is not to be limited to the details given herein, but may be modified within the scope and equivalents of the appended claims.

Claims

1. The utility model provides a connection structure of wiper system panel beating punching press arm seat and arm board, includes arm seat part (100) and arm board (300), its characterized in that: the arm seat component (100) comprises an arm seat main body (110), wherein a raising structure (112) is arranged at the head of the arm seat main body (110), and the raising structure (112) is used for enabling the arm plate (300) to lean against the front end sharp edge of the arm seat main body (110) for limiting, namely the surface contact of the two parts is changed into line contact; the tail part of the arm seat main body (110) is provided with a sinking groove (111), and the locking nut (200) is sunk into the sinking groove (111); the small rivets (120) are ground or punched and riveted on the front ends of the arm seat main bodies (110), and the small rivets (120) are bent into an arc shape;

the arm plate (300) is connected with the arm seat part (100) in a matched mode through the hook (400) and the rivet (500), the arm plate (300) and the arm seat part (100) rotate around the rivet (500) relatively, and the hook (400) is hung in the middle of the small rivet (120) of the arm seat part (100).

2. The connecting structure of a wiper system sheet metal stamping armlet and an armplate of claim, wherein: the shape of the arm seat main body (110) is smooth in transition.