Head rod structure of windscreen wiper

Abstract

The invention relates to the technical field of windscreen wipers, in particular to a windscreen wiper head rod structure, which comprises a fixed end, a head rod main body and a connecting end, the head rod main body comprises a first part and a second part, the fixed end is integrally formed at the left end of the first part, the connecting end is integrally formed at the right end of the second part, and the first part and the second part are integrally formed. The second part can be driven by a driving part to reciprocate close to or far away from the first part, so that the wiper strip connected to the connecting end can reciprocate in the length direction of the wiper strip. The whole windscreen wiper strip can be driven by the driving part to reciprocate in the length direction of the windscreen wiper strip, so that the windscreen wiper strip not only can generate a transverse scraping effect on the front glass of the automobile, but also can generate a longitudinal wiping effect on the front glass of the automobile relative to the transverse scraping effect; therefore, the whole windscreen wiper can more efficiently clean impurities adhered to the front glass of the automobile.

Description

Technical Field

[0001] The invention relates to the technical field of windshield wipers, and in particular to a windshield wiper head rod structure. Background Art

[0002] The windshield wiper is a tool used to clean the front glass of a motor vehicle to prevent rain and other dirt from affecting the vision. The head rod is an important part of the windshield wiper, and its function is to connect the windshield wiper with the drive device so that the entire windshield wiper can be used normally.

[0003] The current wiper head rod can only play a connecting role and its functionality is poor. For example, the current head rod can only transmit the driving force of the driving device to the wiper strip of the wiper, so that the wiper strip rotates at a certain angle to scrape rain or dust on the front glass. Once there are a lot of impurities adhering to the front glass, the performance of the current wiper head rod cannot effectively remove the impurities. Summary of the invention

[0004] The object of the present invention is to provide a wiper head rod structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wiper head rod structure, comprising a fixed end, a head rod body and a connecting end, the head rod body comprising a first part and a second part, wherein the fixed end is integrally formed and arranged at the left end of the first part, and the connecting end is integrally formed and arranged at the right end of the second part, and the second part can be driven by a driving unit to reciprocate towards or away from the first part, so that the wiper strip connected to the connecting end can reciprocate along its own length direction.

[0006] Preferably, a first groove is formed on the lower surface of the first part; a second groove is formed on the lower surface of the second part; a slide bar is fixedly connected inside the second groove, and the left end of the slide bar is slidably connected inside the first groove.

[0007] Preferably, the driving part comprises a bracket, a rotating shaft, a roller and a slanted plate, the rotating shaft passes through the roller and is fixedly connected to the roller, and the rotating shaft and the roller are eccentrically arranged; The bracket is elastically connected to the lower surface of the first part through an elastic component; The slide bar is provided with an inclined groove, and the inclined plate is slidably inserted in the inclined groove.

[0008] Preferably, the bracket includes a U-shaped seat and a top column fixed on the top of the U-shaped seat, the inclined plate is fixedly connected to the top of the top column, and the rotating shaft is rotatably connected to the U-shaped seat.

[0009] Preferably, the elastic member includes two fixed seats and two straight springs. The fixed seats are fixedly connected to the first part, and the lower surface of the slide bar is slidably connected to the upper surface of the fixed seats. Two ends of each straight spring are respectively fixedly connected to the fixed seat and the U-shaped seat, and the two straight springs are respectively arranged on the left and right sides of the top column.

[0010] Preferably, sliding grooves are formed on both the front and rear side surfaces of the slide bar, and sliders are slidably connected inside the sliding grooves. The sliders are fixedly connected to the inner wall surface of the first groove.

[0011] Preferably, the roller includes a wheel body and a rubber sleeve sleeved outside the wheel body; the rotating shaft penetrates through the wheel body and is fixedly connected to the wheel body, and the rotating shaft is eccentrically arranged with respect to the wheel body.

[0012] Preferably, a plurality of driving parts are provided, and every two adjacent rotating shafts are fixedly connected by a synchronizing shaft.

[0013] Preferably, a baffle is fixed to the right end of the first part. The baffle is U-shaped, and the right end of the baffle wraps around the left end of the second part.

[0014] Preferably, a piston sleeve is sleeved on the left end of the slide bar; A bottom plate is fixed to the lower surface of the first part. The bottom plate and the left end of the first groove form a chamber. The piston sleeve is slidably and sealingly arranged inside the chamber, and the one-way valve is in one-way communication with the chamber; A gap is formed between the upper surface of the slide bar and the inner top wall of the first groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Since the driving part of the present invention can drive the second part to perform reciprocating motion along its own length direction, and then can drive the entire wiper strip to perform reciprocating movement along its own length direction. In this way, the wiper strip can not only produce a lateral scraping effect on the front glass of the vehicle, but also produce a longitudinal wiping effect relative to the lateral scraping effect on the front glass of the vehicle, so that the entire wiper can more efficiently clean the impurities adhered to the front glass of the vehicle.

[0016] 2. By arranging the rotating shaft eccentrically with respect to the roller in the present invention, the roller can produce undulations during rolling, and then by cooperating with the inclined groove and the inclined plate, the reciprocating motion of the slide bar and even the entire wiper strip can be realized. The overall structure is designed ingeniously and reasonably, occupies a small space, and the entire driving part can be well hidden between the first part and the front glass of the vehicle. While being practical, it does not affect the overall aesthetics. Description of the Drawings

[0017] Figure 1Schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the structure of the present invention; Figure 3 Front view schematic diagram of the structure of the present invention; Figure 4 Schematic diagram of the structure of the first part of the present invention; Figure 5 Schematic diagram of the sectional three-dimensional structure of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the partial structure; Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at position A in the present invention; Figure 8 Front view schematic diagram of the slide bar of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of the partial structure in the present invention; Figure 10 Left view schematic diagram of the roller of the present invention; Figure 11 Front view partial sectional schematic diagram of the structure of the present invention.

[0018] In the figure: 11, fixed end; 12, head rod main body; 121, first part; 1211, first groove; 1212, slider; 122, second part; 1221, second groove; 13, connection end; 2, slide bar; 21, chute; 22, inclined chute; 23, piston sleeve; 3, driving part; 31, U-shaped seat; 32, rotating shaft; 33, roller; 331, wheel body; 332, rubber sleeve; 34, top column; 35, fixed seat; 36, straight spring; 37, inclined plate; 38, synchronizing shaft; 41, bottom plate; 42, one-way valve; 43, chamber; 44, gap; 5, baffle. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0020] Please refer to Figures 1-11 , the present invention provides a technical solution: A wiper head rod structure includes a fixed end 11, a head rod main body 12, and a connection end 13. The fixed end 11 is used to connect with the driving device of the wiper, and the connection end 13 is used to connect with the secondary rod of the wiper. The above are all prior arts and will not be elaborated here.

[0021] Different from the prior art, in the present invention, the head rod main body 12 is divided into two parts. Specifically, as Figures 1-5 shown, the head rod main body 12 includes a first part 121 and a second part 122. Among them, the fixed end 11 is integrally formed at the left end of the first part 121, and the connection end 13 is integrally formed at the right end of the second part 122. The second part 122 can be driven by a driving part 3 to perform a reciprocating movement closer to or farther from the first part 121, so that the wiper strip connected to the connection end 13 can reciprocate along its own length direction; specifically, since the driving part 3 can drive the second part 122 to perform a reciprocating movement along its own length direction, and then can drive the entire wiper strip to reciprocate along its own length direction. In this way, the wiper strip can not only produce a lateral scraping effect on the front windshield, but also produce a longitudinal erasing effect on the front windshield relative to the lateral scraping effect, so that the entire wiper can clean the impurities adhered to the front windshield more efficiently.

[0022] The sliding connection method between the first part 121 and the second part 122 is as follows: A first groove 1211 is formed on the lower surface of the first part 121. The formation of the first groove 1211 can reduce the weight of the first part 121 and save materials at the same time; a second groove 1221 is formed on the lower surface of the second part 122. Similarly, the formation of the second groove 1221 can reduce the weight of the second part 122 and save materials at the same time; A slide bar 2 is fixedly connected inside the second groove 1221, and the left end of the slide bar 2 is slidably connected inside the first groove 1211; further, sliding grooves 21 are formed on the front and rear side surfaces of the slide bar 2, and sliders 1212 are slidably connected inside the sliding grooves 21. The sliders 1212 are fixedly connected to the inner wall surface of the first groove 1211. On the one hand, the sliding grooves 21 cooperate with the sliders 1212 to reduce the friction between the slide bar 2 and the first part 121, making the sliding smoother. On the other hand, the sliding grooves 21 cooperate with the sliders 1212 to prevent the slide bar 2 from falling out of the first groove 1211.

[0023] In this embodiment, the specific structure of the driving part 3 is as follows: The driving part 3 includes a bracket, a rotating shaft 32, a roller 33 and an inclined plate 37. The rotating shaft 32 penetrates through the roller 33 and is fixedly connected to the roller 33, and the rotating shaft 32 and the roller 33 are eccentrically arranged. The rotating shaft 32 is rotatably connected to the bracket, and the way of the rotating connection between the rotating shaft 32 and the bracket is not limited here; the bracket is elastically connected to the lower surface of the first part 121 through an elastic member. Therefore, under the elastic force of the elastic member, the roller 33 can keep in contact with the surface of the windshield, and the friction between the roller 33 and the windshield is relatively large; an inclined groove 22 is formed on the sliding bar 2, and the inclined plate 37 is slidably inserted into the inside of the inclined groove 22.

[0024] The working principle of the above driving part 3 is as follows: The roller 33 keeps in contact with the windshield under the elastic force of the elastic member. When the entire first part 121 and the second part 122 rotate around the fixed end 11 under the drive of the wiper drive device, the roller 33 itself will also roll. Since the rotating shaft 32 and the roller 33 are eccentrically arranged, there will be height fluctuations during the rolling of the roller 33, that is, the entire bracket will have height fluctuations. This height fluctuation will be converted into a reciprocating telescopic movement of the sliding bar 2 along its own length direction through the cooperation between the inclined groove 22 and the inclined plate 37. In this way, the entire wiper strip can be driven to reciprocate along its own length direction; in the above solution, by the eccentric arrangement of the rotating shaft 32 and the roller 33, the roller 33 can generate height fluctuations during rolling, and then by cooperating with the inclined groove 22 and the inclined plate 37, the reciprocating movement of the sliding bar 2 and even the entire wiper strip can be realized. The overall structure design is ingenious and reasonable, occupies a small space, and the entire driving part 3 can be well hidden between the first part 121 and the windshield. While being practical, it does not affect the overall aesthetics.

[0025] As Figures 8-9 shown, the bracket includes a U-shaped seat 31 and a top column 34 fixed on the top of the U-shaped seat 31. Both the U-shaped seat 31 and the top column 34 can be made of stainless steel. The inclined plate 37 is fixedly connected to the top of the top column 34, and the rotating shaft 32 is rotatably connected to the U-shaped seat 31.

[0026] Furthermore, the elastic member includes two fixed seats 35 and two straight springs 36. The fixed seats 35 are fixedly connected to the first part 121. The fixed seats 35 are in the shape of long rods, and the cross-sectional shape thereof can be circular or square as shown in the figure. And the lower surface of the sliding bar 2 is slidably connected to the upper surface of the fixed seat 35. The fixed seat 35 can not only limit the position of the sliding bar 2, but also support the straight spring 36. The two ends of the straight spring 36 are respectively fixedly connected to the fixed seat 35 and the U-shaped seat 31. The two straight springs 36 are respectively arranged on the left and right sides of the top column 34, so as to stably support the bracket.

[0027] Furthermore, the driving parts 3 in this embodiment are provided with several, for example, three as shown in the figure, so that a greater driving force can be generated to drive the slide 2 to reciprocate. Each two adjacent rotating shafts 32 are fixedly connected by a synchronization shaft 38. The function of the synchronization shaft 38 is to enable multiple rollers 33 to rotate synchronously.

[0028] In order to increase the friction between the roller 33 and the front glass, the specific structure of the roller 33 in this embodiment is as follows: the roller 33 includes a wheel body 331 and a rubber sleeve 332 mounted on the outside of the wheel body 331. The outer peripheral surface of the rubber sleeve 332 is rough, and its contact with the front glass can generate a large friction force to ensure that the roller 33 can roll when the first part 121 rotates; the rotating shaft 32 passes through the wheel body 331 and is fixedly connected to the wheel body 331, and the rotating shaft 32 is eccentrically arranged with the wheel body 331.

[0029] In order to improve the heat dissipation capacity of the entire device and reduce actual wear, this embodiment is also provided with the following structure: The left end of the slide bar 2 is sleeved with a piston sleeve 23; a bottom plate 41 is fixed to the lower surface of the first part 121, and the bottom plate 41 cooperates with the left end of the first groove 1211 to form a chamber 43, the piston sleeve 23 is slidingly sealed and arranged inside the chamber 43, and the one-way valve 42 is in one-way communication with the chamber 43; a gap 44 is formed between the upper surface of the slide bar 2 and the inner top wall of the first groove 1211. The working principle of the above scheme is: when the slide bar 2 moves back and forth, further, as Figure 11 As shown, when the piston sleeve 23 moves to the left, the gas in the chamber 43 cannot be discharged through the one-way valve 42, but will be discharged through the gap 44. Therefore, the gas flowing through the gap 44 can take away the heat generated by the sliding of the slide bar 2, and can also take away the heat generated by the sliding of the inclined groove 22 and the inclined plate 37. When the piston sleeve 23 moves to the right, since the air intake of the one-way valve 42 is greater than the air intake of the gap 44, the gap 44 cannot meet the air intake demand of the chamber 43, so a large amount of external cold air will enter the interior of the chamber 43 through the one-way valve 42. Moreover, although the gap 44 cannot meet the air intake demand of the chamber 43, a part of the gas will still flow back along the gap 44. At this time, Figure 11 As shown, the chute 22 is inclined to the upper right, so a part of the refluxed gas will flow into the interior of the chute 22, thereby enhancing the air exchange efficiency at the top of the chute 22 and achieving a better heat dissipation effect.

[0030] A baffle 5 is fixed to the right end of the first part 121, the baffle 5 is U-shaped, and the right end of the baffle 5 is wrapped around the left end of the second part 122; the baffle 5 can prevent foreign matter from entering between the first part 121 and the second part 122, and can also limit the relative position of the first part 121 and the second part 122 to prevent the first part 121 and the second part 122 from tilting.

[0031] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wiper head rod structure, characterized in that: It includes a fixed end, a head rod body and a connecting end, wherein the head rod body includes a first part and a second part, wherein the fixed end is integrally formed and arranged at the left end of the first part, and the connecting end is integrally formed and arranged at the right end of the second part, and the second part can be driven by a driving unit to reciprocate towards or away from the first part, so that the wiper strip connected to the connecting end can reciprocate along its own length direction.

2. A wiper head rod structure according to claim 1, characterized in that: A first groove is formed on the lower surface of the first part; a second groove is formed on the lower surface of the second part; a slide bar is fixedly connected inside the second groove, and the left end of the slide bar is slidably connected inside the first groove.

3. A wiper head rod structure according to claim 2, characterized in that: The driving part comprises a bracket, a rotating shaft, a roller and a sloping plate, the rotating shaft passes through the roller and is fixedly connected to the roller, and the rotating shaft and the roller are eccentrically arranged; The bracket is elastically connected to the lower surface of the first part through an elastic component; The slide bar is provided with an inclined groove, and the inclined plate is slidably inserted in the inclined groove.

4. The wiper head rod structure according to claim 1, characterized in that: The bracket comprises a U-shaped seat and a top column fixed on the top of the U-shaped seat, the inclined plate is fixedly connected to the top of the top column, and the rotating shaft is rotatably connected to the U-shaped seat.

5. A wiper head rod structure according to claim 4, characterized in that: The elastic component includes two fixing seats and two straight springs. The fixing seats are fixedly connected to the first part, and the lower surface of the slide bar is slidably connected to the upper surface of the fixing seats. The two ends of the straight springs are respectively fixedly connected to the fixing seats and the U-shaped seats. The two straight springs are respectively arranged on the left and right sides of the top column.

6. The wiper head rod structure according to claim 2, characterized in that: The front and rear sides of the slide bar are both provided with slide grooves, the interior of the slide groove is slidably connected with a slider, and the slider is fixedly connected to the inner wall surface of the first groove.

7. The wiper head rod structure according to claim 3, characterized in that: The roller comprises a wheel body and a rubber sleeve sleeved on the outside of the wheel body; the rotating shaft penetrates the wheel body and is fixedly connected to the wheel body, and the rotating shaft is eccentrically arranged with respect to the wheel body.

8. The wiper head rod structure according to claim 3, characterized in that: The driving parts are provided in plurality, and every two adjacent rotating shafts are fixedly connected via a synchronous shaft.

9. The wiper head rod structure according to claim 1, characterized in that: A baffle is fixed to the right end of the first part, the baffle is U-shaped, and the right end of the baffle is wrapped around the left end of the second part.

10. The wiper head rod structure according to claim 2, characterized in that: The left end of the slide bar is sleeved with a piston sleeve; A bottom plate is fixed to the lower surface of the first part, and the bottom plate cooperates with the left end of the first groove to form a chamber, the piston sleeve is slidingly sealed inside the chamber, and the one-way valve is in one-way communication with the chamber; A gap is formed between the upper surface of the slide bar and the inner top wall of the first groove.

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