CN209870334U - Connecting rod structure of windscreen wiper - Google Patents
Connecting rod structure of windscreen wiper Download PDFInfo
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- CN209870334U CN209870334U CN201920443697.8U CN201920443697U CN209870334U CN 209870334 U CN209870334 U CN 209870334U CN 201920443697 U CN201920443697 U CN 201920443697U CN 209870334 U CN209870334 U CN 209870334U
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- shaped groove
- ball bowl
- injection molding
- middle section
- molding part
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Abstract
The utility model provides a wiper connecting rod structure that bending resistance is stronger relates to wiper technical field. The utility model provides a wiper connecting rod structure, includes the body of rod by panel punching press integrated into one piece, the body of rod includes the interlude and sets up the ball bowl portion of moulding plastics at the interlude both ends, the interlude cross-section is the U-shaped, ball bowl portion of moulding plastics is the plane, ball bowl portion of moulding plastics is equipped with the U-shaped groove, and ball bowl portion of moulding plastics U-shaped groove is the same with interlude U-shaped groove direction. The utility model provides high wiper life.
Description
Technical Field
The utility model relates to a wiper technical field especially relates to a wiper connecting rod structure.
Background
In the motor and connecting rod mechanism assembly, the connecting rod assembly is matched with a universal ball of the scraping arm shaft assembly through a ball bowl, and the connecting rod assembly is completed by injection molding of the ball bowl after holes are formed in two ends of the connecting rod in the machining process. As shown in fig. 1, the connecting rod assembly of the existing windscreen wiper comprises a rod body, the rod body is integrally formed by stamping plates, the rod body comprises an intermediate section 11 and ball bowl injection molding parts 12 arranged at two ends of the intermediate section, the cross section of the intermediate section is formed by stamping the intermediate section into a U shape, the ball bowl injection molding parts are planes, U-shaped grooves with two ends in the same size are formed in the ball bowl injection molding parts, and injection molding holes are formed in the ball bowl injection molding parts. The cross section between the ball bowl injection molding part and the middle section of the connecting rod of the windscreen wiper is greatly changed, so that a large corner transition is inevitably formed at the transition part of the ball bowl injection molding part and the middle section of the connecting rod of the windscreen wiper in the process of punch forming of the connecting rod of the windscreen wiper, when a windscreen wiper system (a wiping arm component) is braked by an external force F, stress concentration is easily generated at the transition part of the corner, although a U-shaped groove formed in the existing ball bowl injection molding can play a certain reinforcing role, the reinforcing role is limited, the connecting rod still has the problem of local stress concentration at the transition part, and therefore the bending resistance and the fracture risk of the connecting rod of the windscreen.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a wiper connecting rod structure that bending resistance is stronger is provided.
The utility model provides a technical scheme that its technical problem adopted is: a connecting rod structure of a windscreen wiper comprises a rod body integrally formed by stamping a plate, wherein the rod body comprises a middle section and ball bowl injection molding parts arranged at two ends of the middle section, the cross section of the middle section is U-shaped, the ball bowl injection molding parts are planes, the ball bowl injection molding parts are provided with U-shaped grooves, and the directions of the U-shaped grooves of the ball bowl injection molding parts and the U-shaped grooves of the middle section are the same; the U-shaped groove of the ball bowl injection molding part is a big end close to the middle section end and a small end far away from the middle section end, the opening width of the big end is larger than that of the U-shaped groove of the middle section, and the opening width of the small end is smaller than that of the big end; the small end of the U-shaped groove of the ball bowl injection molding part is in smooth transition to the large end, and the large end of the U-shaped groove of the ball bowl injection molding part is communicated with the U-shaped groove of the middle section and is in smooth transition.
Furthermore, reinforcing ribs are stamped on two sides of the small end of the U-shaped groove of the ball bowl injection molding part.
Furthermore, the opening width of the big end of the U-shaped groove of the ball bowl injection molding part is 2-2.5 times of the opening width of the middle section U-shaped groove.
The utility model has the advantages that: the utility model discloses a wiper connecting rod structure through set up the little U-shaped groove of the big one end opening of one end opening in the ball bowl portion of moulding plastics, can prevent that the ball bowl portion of moulding plastics from to the stress concentration of interlude transition department to the antitorque performance of wiper connecting rod has been strengthened, wiper life has been improved.
Drawings
Fig. 1 is a schematic diagram of a prior art structure:
fig. 2 is a schematic perspective view of the present invention;
FIG. 3 is a top view of FIG. 2;
shown in the figure: 11. the middle section 12. the ball bowl injection molding part 111. the middle section U-shaped groove 121. the ball bowl injection molding part U-shaped groove 122. the reinforcing rib.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 2 and 3, a connecting rod structure of a wiper comprises a rod body integrally formed by punching a plate, wherein the rod body comprises a middle section 11 and ball bowl injection molding parts 12 arranged at two ends of the middle section 11, the cross section of the middle section 11 is U-shaped, and the ball bowl injection molding parts 12 are planes. The ball bowl injection molding part 12 is provided with a U-shaped groove, the U-shaped groove 121 of the ball bowl injection molding part has the same direction with the U-shaped groove 111 at the middle section, namely the extending direction and the opening direction of the U-shaped groove 121 of the ball bowl injection molding part are the same as the extending direction and the opening direction of the U-shaped groove 111 at the middle section; the U-shaped groove 121 of the ball bowl injection molding part is a big end close to the middle section 11 and a small end far away from the middle section 11, the opening width of the big end is larger than that of the U-shaped groove 111 of the middle section, and the opening width of the small end is smaller than that of the big end; the small end of the U-shaped groove 121 of the ball bowl injection molding part is in smooth transition to the large end, and the large end of the U-shaped groove 121 of the ball bowl injection molding part is communicated with the middle section U-shaped groove 111 and is in smooth transition. The above-mentioned mode is equivalent to the portion 12 of moulding plastics at the ball bowl, the strengthening rib has been add to transition department between the portion 12 of moulding plastics of ball bowl and interlude 11, and mould plastics a U-shaped groove 121 tip through the ball bowl and to the mode of big end smooth transition and ball bowl a U-shaped groove 121 main aspects and interlude U-shaped groove 111 intercommunication and smooth transition, make the strengthening rib of addding be bracket form, when the strengthening rib of addding receives the yawing force, internal stress distributes evenly, its anti yawing force F's ability is stronger, can bear most external force that the portion 12 of moulding plastics of ball bowl received, thereby can prevent that the stress from too concentrating in the ball bowl a certain department of transition department that the portion 12 of moulding plastics to interlude 11 transitions, therefore the utility model discloses a wiper connecting rod structure has strengthened the bending resistance of wiper connecting rod, can improve wiper life.
As shown in fig. 2, reinforcing ribs 122 are stamped on two sides of the small end of the U-shaped groove 121 of the ball bowl injection molding part; the opening width of the big end of the U-shaped groove 121 of the ball bowl injection molding part is 2-2.5 times of the opening width of the middle section U-shaped groove 111. The mode can all increase the intensity of ball bowl portion of moulding plastics 12, also is more favorable to the transmission to interlude 11 with the dispersed transmission of the effort that ball bowl portion of moulding plastics 12 received.
Through contrast test, the utility model discloses a bending resistance of wiper connecting rod has promoted about 20%, and local principal stress reduces more than 50%.
Claims (3)
1. The utility model provides a wiper connecting rod structure, includes the body of rod by panel punching press integrated into one piece, the body of rod includes interlude (11) and sets up the ball bowl portion of moulding plastics (12) at interlude (11) both ends, interlude (11) cross-section is the U-shaped, ball bowl portion of moulding plastics (12) are the plane, ball bowl portion of moulding plastics (12) are equipped with U-shaped groove, its characterized in that: the direction of the U-shaped groove (121) of the ball bowl injection molding part is the same as that of the middle section U-shaped groove (111); the end, close to the middle section (11), of the U-shaped groove (121) of the ball bowl injection molding part is a large end, the end, far away from the middle section (11), of the U-shaped groove is a small end, the opening width of the large end is larger than that of the U-shaped groove (111) of the middle section, and the opening width of the small end is smaller than that of the large end; the small end of the U-shaped groove (121) of the ball bowl injection molding part is in smooth transition to the large end, and the large end of the U-shaped groove (121) of the ball bowl injection molding part is communicated with the middle section U-shaped groove (111) and is in smooth transition.
2. The wiper blade link structure of claim 1, wherein: reinforcing ribs (122) are stamped on two sides of the small end of the U-shaped groove (121) of the ball bowl injection molding part.
3. The wiper blade link structure as recited in claim 1 or 2, wherein: the opening width of the big end of the U-shaped groove (121) of the ball bowl injection molding part is 2-2.5 times that of the middle section U-shaped groove (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920443697.8U CN209870334U (en) | 2019-04-02 | 2019-04-02 | Connecting rod structure of windscreen wiper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920443697.8U CN209870334U (en) | 2019-04-02 | 2019-04-02 | Connecting rod structure of windscreen wiper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209870334U true CN209870334U (en) | 2019-12-31 |
Family
ID=68958075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920443697.8U Active CN209870334U (en) | 2019-04-02 | 2019-04-02 | Connecting rod structure of windscreen wiper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209870334U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022150898A1 (en) * | 2021-01-12 | 2022-07-21 | Valeo Sistemas Automotivos Ltda. | Connecting rod for a windscreen wiper actuating linkage |
-
2019
- 2019-04-02 CN CN201920443697.8U patent/CN209870334U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022150898A1 (en) * | 2021-01-12 | 2022-07-21 | Valeo Sistemas Automotivos Ltda. | Connecting rod for a windscreen wiper actuating linkage |
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