Automobile wiper with elastic connection structure
By introducing elastic components and detachable connection structures into the windshield wipers, the adaptability and vibration damping issues of the integral frame structure are solved, enabling flexible adaptation and efficient wiping of different curved glass surfaces, reducing maintenance costs, and improving the lifespan and wiping effect of the wipers.
Patent Information
- Application Number
- CN202521548154.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-23
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-23
AI Technical Summary
The existing integrated frame structure of automotive windshield wipers is prone to wear and tear and is difficult to adapt to different curved glass surfaces, resulting in poor wiping performance and high maintenance costs. In addition, the connection method lacks flexible adjustment and cannot effectively buffer vibration and impact.
The wiper blade frame is connected by an elastic component. The elastic component applies a force to the wiper blade frame to conform to the windshield surface, enabling it to adapt to glass surfaces with different curvatures. Combined with a detachable connection structure and rubber wiper blades, it achieves flexible adaptation and vibration damping.
It improves the adaptability and lifespan of the windshield wipers, reduces maintenance costs, ensures uniform pressure distribution and wiping effect on the glass surface, and enhances the driving experience.
Smart Images
Figure CN224676058U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, specifically to an automotive windshield wiper with an elastic connection structure. Background Technology
[0002] As a key component ensuring clear visibility while driving, windshield wipers play an irreplaceable role in adverse weather conditions. Their core function is to remove rainwater, snow, dust, and other obstructions by adhering to the windshield with the wiper blade. In existing technologies, the structural design of windshield wipers significantly impacts wiping performance and ease of maintenance, particularly the connection and fit between the wiper blade frame and the wiper arm, where numerous optimization issues remain.
[0003] Currently, most conventional automotive windshield wiper blade frames are of a single, continuous structure, meaning the frame is formed in a single, continuous shape and assembled to the wiper arm via direct or simple connection. While this single-piece structure can achieve basic wiping function initially, its drawbacks become increasingly apparent as usage scenarios expand and long-term operation continues. On the one hand, due to factors such as road bumps and motor vibrations, the single-piece frame is prone to localized stress concentration. Once a part wears, deforms, or breaks, the single-piece design limits its ability to adapt, requiring the replacement of the entire wiper blade and frame assembly, significantly increasing the owner's subsequent maintenance costs and wasting materials. On the other hand, different car models, and even different locations on the same model (such as the front and rear windshields), have varying curvatures and arcs due to design differences. The single-piece frame cannot flexibly adapt to diverse curved surfaces, easily resulting in loose fits in certain areas, leading to problems such as wiping residue and abnormal noise. This reduces the wiper's adaptability to complex operating conditions, affecting driving visibility and the driving experience.
[0004] Meanwhile, existing methods of connecting the wiper arm and wiper blade frame, such as simple pivot connections, lack an elastic adjustment mechanism and cannot effectively buffer vibrations and impacts during wiping. This exacerbates component wear and makes it difficult to ensure uniform pressure distribution on glass surfaces with different curvatures, further limiting the wiping effect and lifespan of the wiper. Therefore, overcoming the limitations of the integral frame structure, optimizing the connection and adaptation scheme, and developing a car wiper that combines low-cost maintenance and high surface curvature adaptability has become an urgent need to improve wiper performance and meet market demands. It also points the way for the technological upgrading and innovative development of automotive wiper systems. Utility Model Content
[0005] To address the aforementioned issues, a car windshield wiper with an elastic connection structure is provided. The elastic component applies a force to the wiper blade frame to conform to the windshield surface, enabling it to conform to windshield surfaces with different curvatures, thus solving the problem of low adaptability of traditional wiper arms.
[0006] To address the problems of existing technologies, this utility model provides a car windshield wiper with an elastic connection structure, including a power drive system and a wiper that reciprocates and oscillates in conjunction with the power drive system. The wiper can rub against the windshield. The wiper includes a wiper arm assembly, wiper blade frames, a rubber wiper blade, and an elastic component. Several sets of wiper blade frames are rotatably connected to the wiper arm assembly, and adjacent wiper blade frames form a relative rotational fit. The rubber wiper blade is connected to multiple wiper blade frames and moves synchronously with them. The elastic component is disposed between the gaps of adjacent wiper blade frames, and its two ends are respectively connected to two adjacent wiper blade frames. The elastic component can apply a force to the wiper blade frames to make them rub against the windshield.
[0007] Preferably, the wiper blade frame includes an I-beam bracket, connecting lugs, and locking blocks. The I-beam bracket is connected to the wiper arm assembly. Connecting lugs are provided at both ends of the I-beam bracket. Adjacent wiper blade frames are rotatably connected to a pin through connecting lugs. Two locking blocks are provided opposite to each other on the bottom surface of the I-beam bracket, and the rubber wiper blade is restricted between the two locking blocks.
[0008] Preferably, the wiper arm assembly includes a main connecting arm, an adapter, a secondary connecting arm, and an auxiliary connecting arm. The two ends of the main connecting arm are respectively connected to the secondary connecting arm via the adapter, and the two ends of the secondary connecting arm are respectively connected to the auxiliary connecting arm via the adapter. The two ends of the auxiliary connecting arm are provided with buckles, and the I-beam bracket is detachably connected to the buckles.
[0009] Preferably, the elastic component includes a torsion spring, an adjusting arm, and an adjusting member. Two torsion arms extend from both ends of the torsion spring, and the two torsion arms are respectively connected to the I-beam brackets of two adjacent wiper blade frames. An adjusting arm extends from the end of the torsion arm away from the torsion spring. The adjusting arm extends in a direction parallel to the central axis of the torsion spring, and the adjusting member is movably connected to the adjusting arm.
[0010] Preferably, the outer wall of the adjusting arm is provided with an external thread, the inner wall of the adjusting member is provided with an internal thread, the end of the adjusting member away from the torsion spring is defined as the front end, the outer wall of the adjusting member has a gradually tapering shape from front to back, and the adjusting member can be screwed onto the adjusting arm.
[0011] Preferably, the outer surface of the adjusting member is provided with an anti-slip structure.
[0012] Preferably, the elastic component is detachably connected to the wiper blade frame.
[0013] Preferably, the adjusting member is constrained on the adjusting arm and can move axially along the adjusting arm. The end of the adjusting member away from the torsion spring is defined as the front end, and the outer wall of the adjusting member has a stepped, gradually tapering structure from the front end to the rear end.
[0014] The advantages of this utility model compared to the prior art are:
[0015] 1. When the elastic component is connected between the two wiper blade frames, it can apply a pressing force to the wiper blade frame towards the windshield. Since the rubber wiper blade has a certain deformation capability, it can make the device fit the windshield surface better. The device has strong adaptability to windshield surfaces with different curvatures. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of a windshield wiper arm assembly with an elastic connection structure for a car windshield wiper according to the present invention.
[0017] Figure 2 This is a schematic diagram of the split structure of a windshield wiper arm assembly with an elastic connection structure according to the present invention.
[0018] Figure 3 This is a schematic diagram of the structure of a windshield wiper blade skeleton with an elastic connection structure according to the present invention.
[0019] Figure 4 This is a schematic diagram of the connection structure between the adjacent wiper blade skeletons and the elastic component of a car windshield wiper with an elastic connection structure according to this utility model.
[0020] Figure 5 yes Figure 4 The large sample diagram of node A.
[0021] Figure 6 This is a schematic diagram of the overall structure of the elastic component of a car windshield wiper with an elastic connection structure according to the present invention.
[0022] Figure 7 This is a schematic diagram of the split structure of the elastic component of a car windshield wiper with an elastic connection structure according to the present invention.
[0023] The components in the diagram are labeled as follows: wiper arm assembly 1, main connecting arm 10, adapter 11, secondary connecting arm 12, auxiliary connecting arm 13, buckle 130, wiper blade frame 2, I-beam bracket 20, connecting ear 21, locking block 22, elastic component 3, torsion spring 30, adjusting arm 31, and adjusting piece 32. Detailed Implementation
[0024] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.
[0025] like Figures 1-7 As shown, this utility model provides a car windshield wiper with an elastic connection structure, including a power drive system and a wiper that reciprocates and oscillates in conjunction with the power drive system. The wiper can rub against the windshield. The wiper includes a wiper arm assembly 1, a wiper blade frame 2, a rubber wiper blade, and an elastic component 3. Several sets of wiper blade frames 2 are rotatably connected to the wiper arm assembly 1, and adjacent wiper blade frames 2 form a relative rotational fit. The rubber wiper blade is connected to multiple wiper blade frames 2 and moves synchronously with them. The elastic component 3 is disposed between the gaps of adjacent wiper blade frames 2, and both ends of the elastic component 3 are connected to the adjacent wiper blade frames 2 respectively. The elastic component 3 can apply a force to the wiper blade frames 2 to make them rub against the windshield.
[0026] The rubber wiper blade consists of several wiper blade frames 2 connected together. Adjacent wiper blade frames 2 can rotate. When the elastic component 3 is connected between two wiper blade frames 2, it can apply a pressing force to the wiper blade frame 2 towards the windshield. The magnitude of this force can be adjusted according to the elastic coefficient and deformation degree of the elastic component 3 to adapt to the fitting requirements of windshields with different curvatures. Since the rubber wiper blade has a certain deformation capability, it can make the device fit the windshield surface better. The device has strong adaptability to windshield surfaces with different curvatures.
[0027] The power drive system can use an electric motor in conjunction with a linkage transmission mechanism to provide stable power output for the reciprocating oscillation of the wipers. Its power transmission is precise and can ensure that the wipers move along a preset trajectory.
[0028] The wiper blade frame 2 includes an I-beam bracket 20, connecting lugs 21, and locking blocks 22. The I-beam bracket 20 is connected to the wiper arm assembly 1. Connecting lugs 21 are provided at both ends of the I-beam bracket 20. Adjacent wiper blade frames 2 are rotatably connected to a pin shaft via the connecting lugs 21. Two locking blocks 22 are provided opposite each other on the bottom surface of the I-beam bracket 20, and the rubber wiper blade is restrained between the two locking blocks 22. Figure 3 As shown, the rubber wiper blade can be connected to the retaining plates on each wiper blade frame 2. When the rubber wiper blade needs to be replaced, pull one end of the rubber wiper blade and pull it out from between the retaining plates. It should be noted that the rubber wiper blade and the retaining plate are interference fit, so the rubber wiper blade is not easy to fall off the wiper blade frame 2.
[0029] The wiper arm assembly 1 includes a main connecting arm 10, an adapter 11, a secondary connecting arm 12, and an auxiliary connecting arm 13. The two ends of the main connecting arm 10 are connected to the secondary connecting arm 12 via the adapter 11. The two ends of the secondary connecting arm 12 are connected to the auxiliary connecting arm 13 via the adapter 11. The auxiliary connecting arm 13 has clips 130 at both ends, and an I-beam bracket 20 is detachably connected to the clips 130. Figure 2 As shown, the wiper arm assembly 1 can adapt to windshields with different curvatures through the cooperation of multiple connecting arms. It should also be noted that the adapter 11 is directly and rotatably snapped onto both ends of the main connecting arm 10 and both ends of the secondary connecting arm 12. The secondary connecting arm 12 and the auxiliary connecting arm 13 are directly and rotatably snapped onto the main connecting arm 10 and the secondary connecting arm 12 through the adapter 11. The design of the adapter 11 can avoid the inconvenience of disassembly and replacement caused by using pins, bolts and other structures. Compared with traditional pin and bolt connections, the snap-fit method of the adapter 11 can be quickly disassembled and assembled without tools, which is convenient for maintenance and replacement of parts.
[0030] The elastic component 3 includes a torsion spring 30, an adjusting arm 31, and an adjusting member 32. Two torsion arms extend from both ends of the torsion spring 30, and these arms are respectively connected to the I-beam brackets 20 of two adjacent wiper blade frames 2. An adjusting arm 31 extends from the end of each torsion arm away from the torsion spring 30, and the adjusting arm 31 extends parallel to the central axis of the torsion spring 30. The adjusting member 32 is movably connected to the adjusting arm 31. Figures 5-7 As shown, two torsion arms of the torsion spring 30 are connected to two adjacent I-beam brackets 20. The torsion spring 30 applies a force to the adjacent wiper blade frames 2 to press them firmly against the windshield. Figure 5 As shown, two torsion arms are connected to the ends of two adjacent wiper blade frames 2. The torsion spring 30 applies a force to the end of the wiper blade frame 2 away from the windshield. Since each wiper blade frame 2 is an integral structure, the end away from the torsion arm will apply a force to press against the windshield. Using the principle of mechanical lever, the other end of the wiper blade frame 2 generates pressure on the windshield. The pressure can be adjusted by the adjusting component 32. The adjusting component 32 adjusts the elastic force of the torsion spring 30 by changing the relative position with the adjusting arm 31 or its own structural shape, thereby changing the contact pressure of the wiper blade frame 2.
[0031] It should be noted that the torsion spring 30 is made of high-quality spring steel and undergoes heat treatment, resulting in stable elasticity and strong durability. The torsion arm and the torsion spring 30 are integrally formed, ensuring reliable strength. The adjusting arm 31 is made of metal and is integrally machined or welded to the torsion arm to ensure structural strength and provide an installation base for the adjusting component 32.
[0032] The adjusting arm 31 has an external thread on its outer wall, and the adjusting member 32 has an internal thread on its inner wall. The end of the adjusting member 32 furthest from the torsion spring 30 is defined as the front end. The outer wall of the adjusting member 32 gradually tapers from front to back, and the adjusting member 32 can be screwed onto the adjusting arm 31. Figures 6-7 As shown, the adjusting member 32 is screwed onto the adjusting arm 31. By rotating the adjusting member 32, the adjusting member 32 can move on the adjusting arm 31. Since the outer wall of the adjusting member 32 has a contracting structure from front to back, the outer wall of the adjusting member 32 directly contacts the I-beam bracket 20, which can drive the included angle between the two torsion arms to gradually decrease or increase, thereby achieving the effect of adjusting the magnitude of the force applied by the torsion arms to the wiper blade frame 2.
[0033] The outer surface of the adjusting member 32 is provided with an anti-slip structure. The anti-slip structure allows the operator to easily rotate the adjusting member 32 and facilitates its movement on the adjusting arm 31.
[0034] The elastic component 3 is detachably connected to the wiper blade frame 2. When the existing wiper arm assembly 1, wiper blade frame 2, and rubber wiper blade can meet the requirements, the elastic component 3 may not be required. The elastic component 3 between two adjacent wiper blade frames 2 can be freely disassembled, further increasing the adaptability of the device.
[0035] The adjusting member 32 is confined to the adjusting arm 31 and can move axially along the adjusting arm 31. The end of the adjusting member 32 away from the torsion spring 30 is defined as the front end. The outer wall of the adjusting member 32 has a stepped, gradually tapering structure from the front end to the rear end. The adjusting arm 31 can be configured as a square tubular structure. The adjusting member 32 is confined to the adjusting arm 31 and cannot rotate. By adjusting the position of the adjusting member 32 on the adjusting arm 31, the I-beam bracket 20 can contact the stepped structure of different heights on the outer wall of the adjusting member 32, thereby adjusting the angle between the two torsion arms. After the angle is adjusted, the elastic force of the torsion spring 30 changes, thereby adjusting the contact pressure of the wiper blade frame 2 to meet diverse usage needs.
[0036] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.
Claims
1. A car windshield wiper with an elastic connection structure, comprising a power drive system and a wiper that reciprocates and oscillates in conjunction with the power drive system, the wiper being able to rub against the windshield, characterized in that, The wiper includes a wiper arm assembly (1), a wiper blade frame (2), a rubber wiper blade, and an elastic component (3). Several sets of wiper blade frames (2) are rotatably connected to the wiper arm assembly (1). Adjacent wiper blade frames (2) form a relative rotational fit. The rubber wiper blade is connected to multiple wiper blade frames (2) and moves synchronously with them. The elastic component (3) is disposed between the gaps of adjacent wiper blade frames (2). The two ends of the elastic component (3) are respectively connected to the two adjacent wiper blade frames (2). The elastic component (3) can apply a force to the wiper blade frames (2) to make them adhere to the windshield side.
2. A car windshield wiper with an elastic connection structure according to claim 1, characterized in that, The wiper blade frame (2) includes an I-beam bracket (20), connecting lugs (21), and locking blocks (22). The I-beam bracket (20) is connected to the wiper arm assembly (1). Connecting lugs (21) are provided at both ends of the I-beam bracket (20). Adjacent wiper blade frames (2) are rotatably connected to a pin shaft through connecting lugs (21). Two locking blocks (22) are provided opposite to each other on the bottom surface of the I-beam bracket (20). The rubber wiper blade is restricted between the two locking blocks (22).
3. A car windshield wiper with an elastic connection structure according to claim 2, characterized in that, The wiper arm assembly (1) includes a main connecting arm (10), an adapter (11), a secondary connecting arm (12), and an auxiliary connecting arm (13). The two ends of the main connecting arm (10) are respectively connected to the secondary connecting arm (12) through the adapter (11). The two ends of the secondary connecting arm (12) are respectively connected to the auxiliary connecting arm (13) through the adapter (11). The two ends of the auxiliary connecting arm (13) are provided with buckles (130), and the I-beam bracket (20) is detachably connected to the buckles (130).
4. A car windshield wiper with an elastic connection structure according to claim 2, characterized in that, The elastic component (3) includes a torsion spring (30), an adjusting arm (31), and an adjusting member (32). Two torsion arms extend from both ends of the torsion spring (30), and the two torsion arms are respectively connected to the I-beam brackets (20) of two adjacent wiper blade frames (2). An adjusting arm (31) extends from the end of the torsion arm away from the torsion spring (30). The adjusting arm (31) extends in a direction parallel to the central axis of the torsion spring (30), and the adjusting member (32) is movably connected to the adjusting arm (31).
5. A car windshield wiper with an elastic connection structure according to claim 4, characterized in that, The outer wall of the adjusting arm (31) is provided with an external thread, and the inner wall of the adjusting member (32) is provided with an internal thread. The end of the adjusting member (32) away from the torsion spring (30) is defined as the front end. The outer wall of the adjusting member (32) gradually shrinks from front to back. The adjusting member (32) can be screwed onto the adjusting arm (31).
6. A car windshield wiper with an elastic connection structure according to claim 5, characterized in that, The outer surface of the adjusting component (32) is provided with an anti-slip structure.
7. A car windshield wiper with an elastic connection structure according to claim 1, characterized in that, The elastic component (3) is detachably connected to the wiper blade frame (2).
8. A car windshield wiper with an elastic connection structure according to claim 4, characterized in that, The adjusting member (32) is restricted on the adjusting arm (31) and can move axially along the adjusting arm (31). The end of the adjusting member (32) away from the torsion spring (30) is defined as the front end. The outer wall of the adjusting member (32) has a stepped gradually tapering structure from the front end to the rear end.