A safety structure for preventing wipers from detaching
The wiper structure, designed with a self-locking mechanism, solves the problem of insufficient connection strength between the wiper blade and the connecting arm, achieving double self-locking between the blade and the connecting plate, ensuring the firmness and safety of the connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG WEILONG AUTO PARTS CO LTD
- Filing Date
- 2025-09-08
- Publication Date
- 2026-07-31
AI Technical Summary
The existing wiper blade rubber strip and connecting arm have insufficient connection strength, which makes them prone to loosening or falling off after high-speed or long-term use, posing a safety hazard.
The system employs two self-locking mechanisms. Through the insertion of the rod into the slot and the design of the self-locking groove, it achieves dual horizontal and vertical self-locking between the rubber strip body, the fixing plate, and the connecting plate. Combined with the elastic pressure of the spring and the wedge-shaped self-locking block, it ensures the firmness of the connection.
It achieves a self-locking connection for the windshield wipers, making installation convenient and ensuring a secure connection that prevents loosening or detachment, thus improving service life and safety.
Smart Images
Figure CN224576602U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of windshield wiper technology, specifically to a safety structure for preventing wipers from detaching. Background Technology
[0002] Windshield wipers are essential cleaning devices on the windshields of vehicles, high-speed trains, airplanes, and other transportation vehicles. They are used to remove rainwater, dust, and other contaminants, ensuring clear visibility for the driver. Windshield wipers typically consist of wiper blades and connecting arms, among other components. The reliability of the connection between the wiper blade and the connecting arm directly affects the wiper's lifespan and safety. Especially under high-speed operating conditions, wiper blades are prone to detachment due to vibration or wind impact, posing a safety hazard.
[0003] In existing technologies, the connection between the wiper blade and the connecting arm often uses a simple snap-fit or plug-in structure, which lacks sufficient strength and is prone to loosening or detachment after high-speed or prolonged use. Therefore, there is an urgent need for a simple, easy-to-install, and secure anti-detachment safety structure. Utility Model Content
[0004] To overcome the technical deficiencies in the prior art and effectively solve the technical problems in the background art, this utility model provides the following technical solution: A safety structure for preventing wiper detachment includes a rubber strip body, a connecting plate, and a mounting base. A fixing plate is provided on the upper surface of the rubber strip body, and an insert rod is provided on the upper surface of the fixing plate. The upper surface of the connecting plate has slots that correspond to the insert rod for vertical insertion. Two ends of the upper surface of the connecting plate are respectively provided with a self-locking mechanism one corresponding to the two ends of the insert rod. The mounting base is located on the upper surface of the connecting plate, and the two ends of the mounting base are detachably and self-lockingly connected to the self-locking mechanism one through a second self-locking mechanism.
[0005] As a preferred technical solution of this utility model, the self-locking mechanism includes a self-locking groove, a sliding groove, a T-shaped slider, a spring, a wedge-shaped self-locking block, a wedge-shaped groove, a U-shaped bracket, an auxiliary slider, and an auxiliary sliding groove. The left and right ends of the upper surface of the connecting plate are respectively provided with self-locking grooves communicating with the left and right ends of the slot. Sliding grooves are respectively provided on the front and rear side walls of the self-locking groove. The two sliding grooves are slidably connected to the front and rear ends of the horizontal end of the inverted T-shaped slider. A spring is provided between the outer side of the T-shaped slider and the inner wall of the sliding groove to provide elastic pressure for self-locking. A wedge-shaped self-locking block is provided on the inner side of the T-shaped slider. Wedge-shaped grooves are respectively provided on the left and right ends of the insertion rod. The wedge-shaped self-locking block is movably inserted into the corresponding wedge-shaped groove. An inverted U-shaped bracket is provided at the top of the vertical end of the T-shaped slider extending above the connecting plate. Auxiliary sliders are respectively provided on the lower inner sides of the two arms of the U-shaped bracket. Auxiliary sliding grooves are respectively provided on the front and rear sides of the connecting plate, corresponding to and slidably connected to the auxiliary sliders.
[0006] As a preferred embodiment of this utility model, the self-locking mechanism includes a second slide groove, a second spring, a movable block, a groove, a third spring, and a trapezoidal self-locking block. The lower portions of the left and right ends of the mounting base are respectively provided with second slide grooves. A movable block is slidably connected within the second slide groove. A second spring is provided between the inner end of the movable block and the inner wall of the second slide groove. The outer end of the movable block passes through the gap groove formed between the U-shaped bracket and the T-shaped slider. A groove is provided on the upper surface of the movable block at the outer position of the U-shaped bracket. A third spring is provided at the bottom of the groove to provide elastic pressure for self-locking. A trapezoidal self-locking block is provided at the top of the third spring. A guide slope is provided on the outer end of the trapezoidal self-locking block. The inner end of the trapezoidal self-locking block abuts and locks against the outer side of the U-shaped bracket.
[0007] As a preferred embodiment of this utility model, the upper surface of the insertion rod is provided with insertion posts arranged linearly, and the bottom of the mounting base is provided with insertion holes arranged linearly to correspond to the insertion posts for vertical insertion.
[0008] Compared with the prior art, the beneficial effects of this utility model are: the anti-detachment safety structure on this windshield wiper, through the self-locking function of self-locking mechanism one and self-locking mechanism two, facilitates the self-locking connection of the wiper blade rubber strip, making installation convenient, connection firm, and connection strength good, so that it is not easy to loosen or fall off after high-speed or long-term use.
[0009] Specifically, during use, pulling the U-shaped bracket outward compresses the spring, moving the T-shaped slider to the outside of the slot. Then, the insertion rod is inserted into the slot from bottom to top. Releasing the U-shaped bracket allows the spring to elastically return inward, causing the T-shaped slider to slide inward and press against the end of the insertion rod. This causes the wedge-shaped self-locking block to insert into the wedge-shaped groove, forming a lock. This achieves dual self-locking both horizontally and vertically between the adhesive strip body, the fixing plate, and the connecting plate. Pressing the movable block compresses the spring, shortening the movable block for easier insertion. The U-shaped bracket passes through a gap groove (when passing through the gap groove, the inner side of the U-shaped bracket presses against the guide slope of the trapezoidal self-locking block, causing the spring three to compress and the trapezoidal self-locking block to be housed in the groove). When the spring two elastically returns to its original position, the front end of the movable block passes through the U-shaped bracket, and the groove on the movable block is located on the outside of the U-shaped bracket. The trapezoidal self-locking block in the groove is pushed out as the spring three returns to its original position, and it abuts against the outside of the U-shaped bracket to lock. This achieves self-locking between the connecting plate and the mounting base. In summary, it can play a good role in preventing detachment and safety protection, and is convenient for installation, disassembly and maintenance. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model.
[0011] Figure 2 This is a structural diagram showing the disassembled parts of this utility model.
[0012] Figure 3 This is a schematic diagram of the structure of the fixing plate and the insertion rod of this utility model.
[0013] Figure 4 This is a schematic diagram of the connecting plate of this utility model.
[0014] Figure 5 This is a partial structural schematic diagram of the self-locking mechanism of this utility model.
[0015] Figure 6 This is a partial side view of the self-locking mechanism of this utility model.
[0016] Figure 7 This is a schematic diagram of the structure of the spring and the movable block of this utility model.
[0017] Figure 8 This is a schematic diagram of the structure of the spring triple trapezoidal self-locking block of this utility model.
[0018] Figure 9 This is a bottom view of the mounting base of this utility model.
[0019] In the diagram: 1. Adhesive strip body; 2. Fixing plate; 3. Connecting plate; 4. Self-locking mechanism one; 4. Self-locking groove; 41. Slide groove; 42. T-shaped slider; 43. Spring one; 44. Wedge-shaped self-locking block; 45. Wedge-shaped groove; 46. U-shaped bracket; 47. Auxiliary slider; 48. Auxiliary slide groove; 49. Mounting base; 5. Self-locking mechanism two; 6. Slide groove two; 61. Spring two; 62. Movable block; 63. Groove; 64. Spring three; 65. Trapezoidal self-locking block; 66. Insert rod; 7. Slot; 8. Insert post; 9. Insert hole; 10. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-9This utility model provides a technical solution: a safety structure for preventing wiper detachment, including a rubber strip body 1, a connecting plate 3, and a mounting base 5. A fixing plate 2 is provided on the upper surface of the rubber strip body 1, and an insertion rod 7 is provided on the upper surface of the fixing plate 2. The upper surface of the connecting plate 3 has slots 8 that are inserted into the insertion rod 7. The two ends of the upper surface of the connecting plate 3 are respectively provided with self-locking mechanisms 4 corresponding to the two ends of the insertion rod 7. The mounting base 5 is located on the upper surface of the connecting plate 3. Specifically, the mounting base 5 is connected to the connecting arm of the wiper body. The principle is a mature existing technology, and its principle will not be further described here. The two ends of the mounting base 5 are detachably self-locked to the self-locking mechanism 4 through the second self-locking mechanism 6.
[0022] Furthermore, such as Figure 3 , 4 As shown in Figures 5 and 6, the self-locking mechanism 4 includes a self-locking groove 41, a sliding groove 42, a T-shaped slider 43, a spring 44, a wedge-shaped self-locking block 45, a wedge-shaped groove 46, a U-shaped bracket 47, an auxiliary slider 48, and an auxiliary sliding groove 49. The left and right ends of the upper surface of the connecting plate 3 are respectively provided with self-locking grooves 41 that communicate with the left and right ends of the slot 8. Sliding grooves 42 are respectively provided on the front and rear side walls of the self-locking grooves 41. The two sliding grooves 42 are slidably connected to the front and rear ends of the horizontal end of the inverted T-shaped slider 43. The outer side of the T-shaped slider 43 is connected to the sliding groove. A spring 44 for providing elastic pressure for self-locking is provided (welded or bonded) between the inner walls of the groove 42. A wedge-shaped self-locking block 45 is provided (integral or welded) on the inner side of the T-shaped slider 43. Wedge-shaped grooves 46 are respectively opened at the left and right ends of the insertion rod 7. The wedge-shaped self-locking block 45 is movably inserted into the corresponding wedge-shaped groove 46. An inverted U-shaped bracket 47 is provided at the top of the vertical end of the T-shaped slider 43 extending above the connecting plate 3 (specifically, the center of the horizontal bottom of the inverted U-shaped bracket 47 is aligned with the center of the inverted T-shaped slider 43). The top of the vertical end of the T-shaped slider 43 is welded or glued. During use, by pulling the U-shaped bracket 47 outward, the spring 44 is compressed outward, moving the T-shaped slider 43 to the outside of the slot 8. Then, the insertion rod 7 is inserted into the slot 8 from bottom to top. Releasing the U-shaped bracket 47 causes the spring 44 to elastically return inward, causing the T-shaped slider 43 to slide inward, pressing the end of the insertion rod 7, and causing the wedge-shaped self-locking block 45 to insert into the wedge-shaped groove 46 to form a lock. In summary, this achieves the fixing of the adhesive strip body 1. The horizontal and vertical double self-locking between plate 2 and connecting plate 3 can play a good role in preventing detachment and safety protection, and facilitate disassembly and maintenance. The lower part of the inner side of the two arms of the U-shaped bracket 47 is respectively provided with auxiliary sliders 48 (integrated or welded). The front and rear sides of the connecting plate 3 are respectively provided with auxiliary slide grooves 49 that are slidably connected to the auxiliary sliders 48. In use, the movement of the auxiliary sliders 48 in the auxiliary slide grooves 49 plays an auxiliary limiting and guiding role in the movement of the U-shaped bracket 47.
[0023] Furthermore, such as Figure 7 , 8 As shown in Figure 9, the self-locking mechanism 26 includes a slide groove 261, a spring 262, a movable block 63, a groove 64, a spring 365, and a trapezoidal self-locking block 66. The lower parts of the left and right ends of the mounting base 5 are respectively provided with slide groove 261. A movable block 63 is slidably connected within the slide groove 261. A spring 262 is provided (welded or bonded) between the inner end of the movable block 63 and the inner wall of the slide groove 261. The outer end of the movable block 63 passes through the gap groove formed between the U-shaped bracket 47 and the T-shaped slider 43. A groove 64 is provided on the upper surface of the movable block 63 at the position outside the U-shaped bracket 47. A spring 365 for providing elastic pressure for self-locking is located at the bottom (welded or bonded) of the groove 64. A trapezoidal self-locking block 66 is located at the top (welded or bonded) of the spring 365. Specifically, guides are provided on the outer ends of the movable block 63 and the trapezoidal self-locking block 66. The inclined surface serves as an auxiliary guide during use. The outer end of the trapezoidal self-locking block 66 has a guide inclined surface, and the inner end of the trapezoidal self-locking block 66 abuts and locks against the outer side of the U-shaped bracket 47. During use, by pressing the movable block 63, the second spring 62 is compressed, which can shorten the movable block 63 and facilitate its passage through the gap groove (when passing through the gap groove, the inner side of the U-shaped bracket 47 presses the guide inclined surface of the trapezoidal self-locking block 66, which compresses the third spring 65, and the trapezoidal self-locking block 66 is housed in the groove 64). When the second spring 62 elastically returns to its original position, the front end of the movable block 63 passes through the U-shaped bracket 47, and the groove 64 on the movable block 63 is located outside the U-shaped bracket 4. The trapezoidal self-locking block 66 in the groove 64 is pushed out as the third spring 65 returns to its original position and abuts and locks against the outer side of the U-shaped bracket 47, thereby realizing the self-locking between the connecting plate 3 and the mounting base 5.
[0024] Furthermore, such as Figure 3 As shown, the upper surface of the insertion rod 7 is linearly arranged with insertion posts 9 (welded or bonded), such as... Figure 9 As shown, the bottom of the mounting base 5 has linearly arranged insertion holes 10 that correspond to the insertion post 9 and can be movably inserted into it. In use, the insertion post 9 and the insertion hole 10 can be movably inserted into each other, which facilitates the installation and disassembly of the mounting base 5 and the insertion rod 7, and can also play an auxiliary guiding and positioning role.
[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A rain wiper anti-off safety structure, comprising a rubber strip main body (1), a connecting plate (3) and a mounting seat (5), characterized in that: The upper surface of the adhesive strip body (1) is provided with a fixing plate (2), the upper surface of the fixing plate (2) is provided with a plug rod (7), the upper surface of the connecting plate (3) is provided with a slot (8) corresponding to the plug rod (7) for insertion, the two ends of the upper surface of the connecting plate (3) are respectively provided with a self-locking mechanism one (4) corresponding to the two ends of the plug rod (7), the mounting seat (5) is located on the upper surface of the connecting plate (3), and the two ends of the mounting seat (5) are respectively detachably self-locked to the self-locking mechanism one (4) through the self-locking mechanism two (6).
2. The anti-detachment safety structure on the windshield wiper according to claim 1, characterized in that: The self-locking mechanism 1 (4) includes a self-locking groove (41), a sliding groove (42), a T-shaped slider (43), a spring 1 (44), a wedge-shaped self-locking block (45), a wedge-shaped groove (46), a U-shaped bracket (47), an auxiliary slider (48), and an auxiliary sliding groove (49). The left and right ends of the upper surface of the connecting plate (3) are respectively provided with self-locking grooves (41) that communicate with the left and right ends of the slot (8). The front and rear side walls of the self-locking groove (41) are respectively provided with sliding grooves (42). The two sliding grooves (42) are respectively slidably connected to the front and rear ends of the horizontal end of the inverted T-shaped slider (43). The outer side of the T-shaped slider (43) is connected to the inner wall of the sliding groove (42). A spring (44) is provided to provide elastic pressure for self-locking. A wedge-shaped self-locking block (45) is provided on the inner side of the T-shaped slider (43). Wedge-shaped grooves (46) are respectively opened at the left and right ends of the insertion rod (7). The wedge-shaped self-locking block (45) is movably inserted into the corresponding wedge-shaped groove (46). An inverted U-shaped bracket (47) is provided at the top of the vertical end of the T-shaped slider (43) extending above the connecting plate (3). An auxiliary slider (48) is provided on the lower part of the inner side of the two arms of the U-shaped bracket (47). An auxiliary sliding groove (49) corresponding to the auxiliary slider (48) is opened on the front and rear sides of the connecting plate (3).
3. The anti-detachment safety structure on the windshield wiper according to claim 2, characterized in that: The self-locking mechanism two (6) includes a slide groove two (61), a spring two (62), a movable block (63), a groove (64), a spring three (65), and a trapezoidal self-locking block (66). The lower parts of the left and right ends of the mounting base (5) are respectively provided with slide groove two (61). The movable block (63) is slidably connected in the slide groove two (61). The inner end of the movable block (63) is provided with spring two (62) between the inner end of the movable block (63) and the inner wall of the slide groove two (61). The outer end of the movable block (63) passes through the U-shaped bracket (4). 7) The gap groove formed between the movable block (63) and the T-shaped slider (43) is provided with a groove (64) on the upper surface of the movable block (63) located outside the U-shaped bracket (47). A spring three (65) for providing elastic pressure for self-locking is provided at the bottom of the groove (64). A trapezoidal self-locking block (66) is provided at the top of the spring three (65). A guide slope is provided at the outer end of the trapezoidal self-locking block (66). The inner end of the trapezoidal self-locking block (66) abuts and locks against the outer side of the U-shaped bracket (47).
4. The anti-detachment safety structure on the windshield wiper according to claim 3, characterized in that: The upper surface of the insertion rod (7) is provided with insertion posts (9) arranged linearly, and the bottom of the mounting base (5) is provided with insertion holes (10) that are movably inserted into the insertion posts (9) in a linear arrangement.