Wiper drive arm assembly structure

Abstract

To provide a wiper driving arm assembly structure.SOLUTION: The wiper driving arm assembly structure according to the present invention comprises an adapting member and a driving arm. The fitting member includes a head portion, a body and a pair of resilient arms. The main body is connected to the head portion, and the elastic arm is disposed on opposite sides of the head portion and the main body. The elastic arm includes a pressing portion disposed on the head and a positioning portion extending to the body. The positioning portion comprises a bump located at a distal end of the resilient arm. The driving arm includes an arm and a cover connected to the arm. The cover is provided with a position limiting slot corresponding to the elastic arm, and the driving arm is coupled to the fitting member by the mutual engagement of the position limiting slot and the bump. In this way, the drive arm is rigidly connected to the adapter.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to wipers, and more particularly to a windshield wiper driving arm assembly structure. [Background technology]

[0002] Automotive wipers are attached to the exterior of a vehicle's windshield and connected to a drive arm that drives the wiper to repeatedly move across the windshield, removing rainwater, dirt, and other debris from the windshield.

[0003] Furthermore, automobile wipers typically have a wiper drive arm connected to an accessory holder, with a metal elastic plate and a scraper attached to the bottom of the accessory holder. The wiper drive arm drives the accessory holder and presses against the metal elastic plate and the scraper to clean the vehicle's windshield. A separate mating member is used to connect the wiper drive arm and the accessory holder. The wiper drive arm and the mating member are connected by a position-limiting slot provided on the drive arm and a corresponding elastic button installed on the mating member, which is then mated with the position-limiting slot. Summary of the Invention [Problem to be solved by the invention]

[0004] However, since the fitting member is usually made of a plastic member, after a certain period of use, the elastic button easily deteriorates over time or loses its elastic restoring force, causing it to come off the position limiting slot, making the wiper drive arm inoperable. Therefore, an improvement is needed.

[0005] As a result of extensive research, the present inventors have found that the above object can be achieved by a wiper drive arm assembly structure.

[0006] The present invention was made in consideration of the above problems through intensive research by the inventor, and its purpose is to provide a wiper drive arm assembly structure that is firmly connected by reliably connecting the wiper drive arm to an adaptable member and preventing it from loosening. [Means for solving the problem]

[0007] To achieve the above object, one aspect of the present invention provides a wiper drive arm assembly structure comprising an accommodating member and a drive arm. The accommodating member includes a head portion, a body, and a pair of resilient arms. The body is connected to the head portion, and the resilient arms are installed on opposite sides of the head portion and the body. The resilient arms have a pressing portion provided on the head portion and a positioning portion extending to the body. The positioning portion consists of a bump located at the end of the resilient arm. The drive arm includes an arm and a cover connected to the arm. The cover is provided with a position limiting slot corresponding to the resilient arm, and the drive arm is connected to the accommodating member by mutual engagement between the position limiting slot and the bump.

[0008] According to one aspect of the present invention, the body is connected to the head, and a step exists between the body and the head. The step includes a front engagement portion and two arcuate portions connected to the front engagement portion. The cover has a top and two side walls connected to the top, one side of the top abuts against the front engagement portion, and the two side walls abut against the two arcuate portions, respectively.

[0009] According to one aspect of the present invention, each arcuate portion includes a middle arcuate surface provided on each elastic arm, and upper and lower arcuate surfaces located on either side of the middle arcuate surface. The middle arcuate surface is located between the pressing portion and the positioning portion, and a fitting groove is formed between the middle arcuate surface and the bump. The side wall of the cover has an engagement plate on one side of the position limiting slot, and the engagement plate is located in the fitting groove.

[0010] According to one aspect of the present invention, the main body has a support rib located on one side of each bump, and the side wall of the cover has an abutment plate formed on the other side of the position limiting slot, and the abutment plate abuts against the support rib.

[0011] According to one aspect of the present invention, one end of the support rib extends toward the head portion so as to be connected to the lower arcuate surface.

[0012] According to one aspect of the present invention, the support rib extends parallel to the direction of the elastic arm and is arranged to present an L-shape.

[0013] According to one aspect of the invention, each side wall has a curved side edge away from the top to form a track, the main body is inserted between the tracks of the two side walls, and the track abuts against one end of the support rib.

[0014] According to one aspect of the present invention, the main body is provided with grooves at the outer ends of the resilient arms.

[0015] According to one aspect of the present invention, a plurality of anti-slip ribs are provided on the surface of the pressing portion.

[0016] According to one aspect of the present invention, the wiper drive arm assembly structure further comprises an accessory holder including a pivot shaft, and the body of the adaptable member is provided with a shaft hole, and the accessory holder and the adaptable member are coupled together by mutual engagement of the pivot shaft and the shaft hole. [Effects of the Invention]

[0017] The wiper drive arm assembly structure of the present invention includes a resilient arm mounted on an accommodating member, the resilient arm having a pressing portion and a positioning portion, and a bump mounted on the positioning portion. The cover of the drive arm is provided with a position limiting slot corresponding to the resilient arm, and the drive arm is coupled to the accommodating member by the inter-engagement of the position limiting slot and the bump. This simplifies the wiper drive arm assembly structure and achieves the objective of a firm coupling by reliably coupling the wiper drive arm to the accommodating member without loosening.

[0018] Other objects, configurations and effects of the present invention will become apparent from the following detailed description of the preferred embodiments of the present invention. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a perspective view showing an external appearance of a wiper drive arm assembly structure according to an embodiment of the present invention; [Figure 2] 1 is a schematic exploded view showing a wiper drive arm assembly structure according to an embodiment of the present invention; [Figure 3] 1 is a perspective view showing an external appearance of a fitting member according to an embodiment of the present invention; [Figure 4] FIG. 1 is a front view of a drive arm and compliant member combination according to one embodiment of the present invention. [Figure 5] FIG. 5 is a cross-sectional view taken along line 5-5 in FIG. [Figure 6] FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. [Figure 7] FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. [Figure 8] FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 4. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0021] FIG. 1 is an external perspective view showing a wiper drive arm assembly structure according to one embodiment of the present invention. The wiper drive arm assembly structure 1 according to the present invention comprises an adapting member 10, a drive arm 20, and an accessory holder 30. The drive arm 20 is fitted onto the adapting member 10 so as to be integrally connected, and the adapting member 10 is fitted into the accessory holder 30, thereby completing the wiper drive arm assembly structure 1. Incidentally, a wiper kit is formed by further connecting a member such as wiper adhesive tape 2 to the bottom of the accessory holder 30. The wiper drive arm assembly structure 1 will be described in detail later.

[0022] FIG. 2 is a schematic exploded view showing an assembly structure of a wiper drive arm according to one embodiment of the present invention. FIG. 3 is an external perspective view of an adapting member according to one embodiment of the present invention. FIG. 4 is a front view of the combined drive arm and adapting member according to one embodiment of the present invention. The adapting member 10 according to the present invention comprises a head portion 11, a body 12, and a pair of elastic arms 13. The body 12 is connected to the head portion 11, and the pair of elastic arms 13 are installed on opposite sides of the head portion 11 and the body 12. Each elastic arm 13 includes a pressing portion 131 provided on the head portion 11 and a positioning portion 132 extending to the body 12. The positioning portion 132 has a bump 133 located at the end of the elastic arm 13. In this embodiment, the body 12 has a groove 120 at the outer end of the elastic arm 13. The pressing portion 131 has a plurality of anti-slip ribs 130 on the surface of the pressing portion 131. The anti-slip ribs 130 are provided as anti-slip members and press the pressing portion 131 to drive the positioning portion 132 to deform.

[0023] The drive arm 20 includes an arm 21 and a cover 22 connected to the arm 21. The cover 22 is provided with a pair of position limiting slots 23 corresponding to the pair of elastic arms 13. The drive arm 20 is coupled to the compliant member 10 by the mutual engagement between the position limiting slots 23 and the bumps 133.

[0024] Furthermore, the accessory holder 30 includes a base 31 and a pivot shaft 32 installed on the base 31. Furthermore, a shaft hole 14 is provided in the body 12 of the adapting member 10. The accessory holder 30 and the adapting member 10 are connected by mutual engagement between the pivot shaft 32 and the shaft hole 14. In this way, the drive arm 20 is fixed to the accessory holder 30 via the adapting member 10.

[0025] Specifically, the body 12 is connected to the head portion 11, and a step portion 100 exists between the body 12 and the head portion. The step portion 100 includes a front engagement portion 101 and two arcuate portions 102 connected to the front engagement portion 101. Each arcuate portion 102 includes an intermediate arcuate surface 103 provided on each elastic arm 13, and an upper arcuate surface 104 and a lower arcuate surface 105 located on both sides of the intermediate arcuate surface 103. The intermediate arcuate surface 103 is located between the pressing portion 131 and the positioning portion 132, and a fitting groove 106 is formed between the intermediate arcuate surface 103 and the bump 133. It should be noted that the fitting groove 106 is provided to increase the elasticity of the positioning portion 132 and facilitate the displacement of the bump 133 located at the end of the elastic arm 13.

[0026] In this embodiment, the cover 22 includes a top 221 and two side walls 222 connected to the top 221. One side of the top 221 abuts against the front engaging portion 101, and the two side walls 222 abut against the two arcuate portions 102, respectively. In addition, the side walls 222 have an engaging plate 223 formed on one side of the position limiting slot 23, and the engaging plate 223 is positioned in the fitting groove 106.

[0027] In one embodiment of the present invention, the body 12 includes a support rib 15 located on one side of each of the bumps 133. A contact plate 224 is formed on the side wall 222 of the cover 22 on the other side of the position limiting slot 23. The contact plate 224 is in contact with the support rib 15. One end of the support rib 15 extends toward the head portion 11 so as to connect to the lower arc surface 105. The support rib 15 extends parallel to the elastic arm 13 and is arranged to form an L shape.

[0028] More specifically, each side wall 222 has a curved side edge away from the top 221 to form a track 225. The body 12 is penetrated between two tracks 225, and the track 225 abuts against one end of the support rib 15. It should be noted that the support rib 15 is provided to support the abutment plate 224 so as to prevent excessive pressure from being generated during operation of the drive arm 20, causing the abutment plate 224 to deform and the bump 133 to be disengaged from the position limiting slot 23.

[0029] Figure 5 is a cross-sectional view taken along line 5-5 in Figure 4. Figure 6 is a cross-sectional view taken along line 6-6 in Figure 4. Figure 7 is a cross-sectional view taken along line 7-7 in Figure 4. Figure 8 is a cross-sectional view taken along line 8-8 in Figure 4. As shown in Figure 5, the drive arm 20 according to the present invention is coupled to the compliant member 10 by the mutual engagement of the position limiting slot 23 and the bump 133. Similarly, the compliant member 10 compresses the pressing portion 131 and drives the positioning portion 132 to deform, thereby disengaging the bump 133 from the position limiting slot 23. In this way, the drive arm 20 is removed from the compliant member 10.

[0030] 6, the drive arm 20 according to the present invention has a track 225 formed by curving the bottom of the side wall 222. The body 12 of the adaptable member 10 is provided with a pair of support ribs 15, and the track 225 abuts against one end of the support ribs 15.

[0031] 7, the cover 22 of the driving arm 20 according to the present invention has an abutment plate 224 formed on one side of the position limiting slot 23 of the side wall 222. When the driving arm 20 is coupled to the fitting member 10, the abutment plate 224 abuts against the support rib 15.

[0032] 8, the drive arm 20 according to the present invention has a track 225 formed by curving the bottom of the side wall 222. When the drive arm 20 is engaged with the adaptable member 10, the cover 22 of the drive arm 20 is placed over the adaptable member 10. In this case, the body 12 of the adaptable member 10 is inserted between the two tracks 225 of the cover 22.

[0033] The above-described embodiments are intended to facilitate understanding of the present invention and are not intended to limit the present invention. The present invention may be modified or improved without departing from the spirit thereof, and it goes without saying that the present invention includes equivalents thereof. [Explanation of symbols]

[0034] 1. Wiper drive arm assembly structure 2 wiper adhesive tape 10 Compatible materials 100 Step 101 Front engagement part 102 Arc section 103 Intermediate arc surface 104 Upper arc surface 105 Lower arc surface 106 Fitting groove 11 Head 12 Main Unit 120 Groove 13 Elastic Arm 130 Anti-slip rib 131 Pressing part 132 Positioning part 133 Bump 14 shaft hole 15 Support rib 20 Drive arm 21 Arm 22 Cover 221 Top 222 Side wall 223 Engagement plate 224 Contact plate 225 trucks 23 Position Restriction Slots 30 Accessory Holder 31 Pedestal 32 Pivot axis

Claims

1. a head portion, a body, and a pair of elastic arms, the body being connected to the head portion, the pair of elastic arms being disposed on opposite sides of the head portion and the body, each elastic arm including a pressing portion provided on the head portion and a positioning portion extending to the body, the positioning portion being an accommodating member including a bump located at an end of the elastic arm; A wiper drive arm assembly structure comprising: an arm; a cover connected to the arm, the cover having a pair of position limiting slots corresponding to a pair of the resilient arms; and a drive arm coupled to the compliant member by mutual engagement of the position limiting slots with the bumps.

2. 2. The wiper drive arm assembly structure of claim 1, wherein the main body is connected to the head portion, and a step portion is formed between the main body and the head portion, the step portion having a front engagement portion and two arc portions connected to the front engagement portion, and the cover includes a top portion and two side walls connected to the top portion, one side of the top portion abutting against the front engagement portion, and the two side walls abut against the two arc portions, respectively.

3. 3. The wiper drive arm assembly structure according to claim 2, wherein each arcuate portion includes an intermediate arcuate surface provided on each elastic arm, and an upper arcuate surface and a lower arcuate surface located on both sides of the intermediate arcuate surface, the intermediate arcuate surface being located between the pressing portion and the positioning portion, a fitting groove being formed between the intermediate arcuate surface and the bump, and a side wall of the cover having an engaging plate formed on one side of the position limiting slot, the engaging plate being located in the fitting groove.

4. 4. The wiper drive arm assembly structure according to claim 3, wherein the main body has a support rib located on one side of each of the bumps, and the side wall of the cover has an abutment plate formed on the other side of the position limiting slot, the abutment plate abutting against the support rib.

5. 5. The wiper drive arm assembly structure according to claim 4, wherein one end of the support rib is connected to the lower arc surface so as to extend toward the head portion.

6. 5. The wiper drive arm assembly structure according to claim 4, wherein the support rib extends parallel to the direction of the elastic arm and is arranged to present an L-shape.

7. 5. The wiper drive arm assembly structure according to claim 4, wherein each side wall has a track formed by curving a side edge away from the top, the main body is disposed between the tracks of the two side walls, and the track abuts against one end of the support rib.

8. 2. The wiper drive arm assembly structure according to claim 1, wherein the main body has a groove formed at an outer end of the elastic arm.

9. 2. The wiper drive arm assembly structure according to claim 1, wherein a plurality of anti-skid ribs are provided on the surface of the pressing portion.

10. 2. The wiper drive arm assembly structure according to claim 1, further comprising an accessory holder including a pivot shaft, wherein the body of the adaptable member is provided with an axial hole, and the accessory holder and the adaptable member are connected by mutual engagement of the pivot shaft and the axial hole.

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