Riveting-free windshield wiper connecting device

Abstract

The riveting-free windshield wiper connecting device comprises a fixed connecting base and a windshield wiper rubber strip, a mounting groove extending downwards is formed in the middle of the top face of the fixed connecting base, and the lower portion of an iron supporting base is inserted into the mounting groove and clamped and fixed; clamping grooves extending upwards are formed in the front portion and the rear portion of the bottom face of the fixed connecting base, an inner through groove penetrating left and right is formed in the middle of the bottom face of the fixed connecting base, and an upper mounting through groove penetrating left and right is formed in the middle of the top face of the inner through groove; protruding positioning parts are formed on the left portion and the right portion of the front inner side wall and the rear inner side wall of the middle of the clamping groove, and clamping protruding parts are formed on the inner side walls of the bottom ends of the protruding positioning parts. The iron supporting base and the long elastic piece are fixed through the fixed connecting base made of plastic, the elastic effect of the long elastic piece is guaranteed, meanwhile, the connecting effect of the iron supporting base and the long elastic piece is guaranteed, operation is stable in the rainwater brushing process, the problems of shaking, scraping missing and the like are avoided, and the using effect is guaranteed.

Description

Technical fields:

[0001] This invention relates to the field of windshield wiper equipment technology, and more specifically to a riveted-free windshield wiper connection device. Background technology:

[0002] Windshield wipers, also known as wipers, are devices used to remove rain, snow, and dust from a vehicle's windshield to improve the driver's visibility and increase driving safety. They work in conjunction with the wiper arms in a reciprocating motion to clear rain, snow, and dust from the glass.

[0003] In existing frameless wipers, the steel blades are fixed to the iron support base and the curved steel blades by pneumatic or stamping riveting. This can easily damage the original curvature and rebound force of the curved spring, resulting in large changes in the height and pressure of the steel blades and unstable quality. This can easily cause shaking, missed wiping, and abnormal noise during the wiping process, affecting the wiping function and posing a driving safety hazard. Summary of the Invention:

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a riveted-free wiper connection device. Its iron support base and elongated spring are fixed by a plastic fixing connector, which ensures the elasticity of the elongated spring and the connection between the iron support base and the spring. This makes the wiper stable during the wiping process and prevents problems such as shaking and missed wiping, thus ensuring the performance.

[0005] The solution of the present invention to the aforementioned technical problem is:

[0006] A riveting-free wiper connection device includes a fixed connecting seat and a wiper blade. The top surface of the fixed connecting seat has a downwardly extending mounting groove formed in the middle. The lower part of the iron support seat is inserted into the mounting groove and locked in place.

[0007] The bottom surface of the fixed connecting seat has upwardly extending slots at the front and rear, and the bottom surface of the fixed connecting seat has a through-hole groove that runs from left to right at the middle, and the top surface of the through-hole groove has an upper mounting groove that runs from left to right at the middle.

[0008] The left and right sides of the front and rear inner sidewalls of the middle part of the slot are formed with protruding positioning parts. The inner sidewall of the bottom end of the protruding positioning part is formed with a locking protrusion. The middle part of the elongated spring is inserted into the upper mounting slot. The top surface of the middle part of the elongated spring is close to or near the top surface of the upper mounting slot. The left and right sidewalls of the elongated spring are close to the inner sidewall of the upper mounting slot. The protruding positioning part is inserted into the positioning hole formed on the front and rear sidewalls of the middle part of the elongated spring and cooperates with it. The top surface of the locking protrusion presses against or is close to the bottom edge of the elongated spring.

[0009] The elongated spring has a central locking groove extending to the left and right in the middle. The upper part of the wiper blade is locked in the central locking groove, and the bottom shaving part of the wiper blade is located below the elongated spring.

[0010] The left and right sides of the elongated spring are fitted with elastic decorative protective strips, the inner ends of which are fitted into corresponding slots, and the inner end face of the elastic decorative protective strip is close to or in close contact with the inner end face of the corresponding slot.

[0011] The lower inner end of the elastic decorative protective strip is formed with an outwardly extending elongated slot. The bottom surface of the middle part of the elongated slot is formed with a lower through groove. The elongated spring is inserted into the elongated slot. The middle through groove of the elongated spring is aligned with the lower through groove. The wiper blade is inserted into the lower through groove. The outer end face of the elongated spring is pressed against the inner end face of the corresponding outer end of the elongated slot.

[0012] The top surface of the elastic decorative protective strip is formed with an elongated protrusion, which is engaged in a strip-shaped groove formed in the middle of the top surface of the corresponding groove.

[0013] The elongated spring has positioning grooves formed on the front and rear sidewalls near its end, and the elongated slot has positioning parts formed on the front and rear inner sidewalls near its end. The positioning parts are inserted into the corresponding positioning grooves.

[0014] The upper front and rear side walls of the wiper blade are formed with side grooves extending to the left and right, and the front and rear wall panels of the middle through groove are nested in the corresponding side grooves.

[0015] The front and rear sidewalls of the intermediate locking slot near the left and right ends are formed with lateral expansion grooves extending forward or backward. The side of the lateral expansion groove at the left end and the lateral expansion groove at the right end that are close to each other is an inclined wall. The right ends of the inclined walls of the two lateral expansion grooves on the left side are close to each other and the left ends are far apart. The left ends of the inclined walls of the two lateral expansion grooves on the right end are close to each other and the right ends are far apart.

[0016] The bottom surface of the mounting groove is formed with a central support protrusion extending forward and backward. The middle of the left and right side walls of the central support protrusion is formed with an extension. The front and rear ends of the central support protrusion are formed on the front and rear inner side walls of the mounting groove. The top surfaces of the front and rear ends of the central support protrusion are formed with circular locking parts. The circular locking parts are formed on the inner side walls of the front or rear of the mounting groove.

[0017] Side positioning grooves are formed on the front and rear inner walls of the mounting grooves on the left and right sides of the middle support protrusion. A downwardly extending side connecting part is formed in the middle of the top surface of the side positioning groove. A locking protrusion is formed on the opposite wall surface of the corresponding front and rear side connecting parts.

[0018] The iron support base includes two side fixing plates, front and rear. The bottom surfaces of the left and right sides of the two side fixing plates are formed with the same bottom plate extending from front to back. The middle of the left and right sides of the side fixing plates are formed with positioning through holes. The bottom surface of the bottom plate presses against the bottom surface of the mounting groove. The outer side wall of the side fixing plate is in close contact with the corresponding inner side wall of the mounting groove. The locking protrusion is locked in the corresponding positioning through hole.

[0019] The bottom surface of the middle part of the two side fixing plates is formed with an upward extending through groove, and the top surface of the extending through groove is formed with a circular locking through hole with a diameter greater than the distance between the left and right side walls of the extending through groove. The end of the middle support protrusion is located in the corresponding extending through groove, and the circular locking part is locked in the corresponding circular locking through hole.

[0020] The outstanding effects of this invention are:

[0021] Its iron support base and elongated spring are fixed by a plastic fixing connector to ensure the elasticity of the elongated spring and the connection between the iron support base and the spring. This ensures stable operation during the rain-wiping process, without any shaking or missed scraping, thus guaranteeing the best performance. Attached image description:

[0022] Figure 1 This is a partial structural diagram of the windshield wiper arm installed in this invention;

[0023] Figure 2 yes Figure 1 A partial structural diagram showing the components, including the plastic wiper head, removed;

[0024] Figure 3 yes Figure 1 A partial sectional view;

[0025] Figure 4 yes Figure 2 A partial sectional view;

[0026] Figure 5 This is a partial structural diagram of the elongated spring and the fixed connecting seat;

[0027] Figure 6 yes Figure 5 A schematic diagram of the local structure from a different angle;

[0028] Figure 7 This is a partial structural diagram of the elastic decorative protective strip;

[0029] Figure 8 This is a partial structural diagram of the fixed connector;

[0030] Figure 9 yes Figure 8 A schematic diagram of the local structure from a different angle;

[0031] Figure 10 This is a partial structural diagram of the iron support base;

[0032] Figure 11 yes Figure 10 A schematic diagram of the local structure from a different angle;

[0033] Figure 12 This is a partial structural diagram of the area between the elastic decorative protective strip and the elongated spring clip;

[0034] Figure 13 This is a schematic diagram of the connection structure between the fixed connecting seat and the first type of automotive windshield wiper arm;

[0035] Figure 14 This is a partial sectional view of the first type of automotive windshield wiper arm being installed;

[0036] Figure 15 This is a schematic diagram of the connection structure between the fixed connecting seat and the second type of automotive wiper arm;

[0037] Figure 16 This is a schematic diagram of the connection structure between the fixed connecting seat and the third type of automotive wiper arm;

[0038] Figure 17 yes Figure 16 A partial sectional view;

[0039] Figure 18 yes Figure 16 A partial structural diagram of the plastic wiper head used in this application;

[0040] Figure 19 This is a schematic diagram of the connection structure between the fixed connecting seat and the fourth type of automotive wiper arm;

[0041] Figure 20 This is a schematic diagram of the connection structure between the fixed connecting seat and the fifth type of automotive wiper arm;

[0042] Figure 21 yes Figure 20 A partial sectional view;

[0043] Figure 22 This is a partial structural diagram of the fifth type of automotive windshield wiper arm;

[0044] Figure 23 This is a partial structural diagram of the plastic wiper connector of the fifth type of automotive wiper arm;

[0045] Figure 24 This is a schematic diagram of the connection structure between the fixed connecting seat and the sixth type of automotive windshield wiper arm;

[0046] Figure 25 yes Figure 24 A schematic diagram of the local structure from a different angle;

[0047] Figure 26 yes Figure 24 A partial structural diagram of a plastic wiper head;

[0048] Figure 27 This is a partial structural diagram of the sixth type of automotive windshield wiper arm;

[0049] Figure 28 This is a partial structural diagram of the fixed connecting seat and the seventh type of automotive windshield wiper arm;

[0050] Figure 29 yes Figure 28 A partial structural diagram of a plastic wiper head;

[0051] Figure 30 This is a partial structural diagram of the seventh type of automotive windshield wiper arm;

[0052] Figure 31 This is a schematic diagram of the connection structure between the fixed connecting seat and the eighth type of automotive windshield wiper arm;

[0053] Figure 32 yes Figure 31 A partial sectional view;

[0054] Figure 33 This is a partial structural diagram of the eighth type of automotive windshield wiper arm;

[0055] Figure 34 This is a schematic diagram of the connection structure between the fixed connecting seat and the ninth type of automotive windshield wiper arm;

[0056] Figure 35 yes Figure 34 A partial structural diagram of a plastic wiper head;

[0057] Figure 36 This is a schematic diagram of the connection structure between the fixed connecting seat and the tenth type of automotive windshield wiper arm;

[0058] Figure 37 This is a schematic diagram of the connection structure between the fixed connecting seat and the eleventh type of automotive windshield wiper arm;

[0059] Figure 38 yes Figure 37 A partial sectional view;

[0060] Figure 39 This is a partial structural diagram of the eleventh type of automotive windshield wiper arm;

[0061] Figure 40 This is a schematic diagram of the connection structure between the fixed connecting seat and the twelfth type of automotive windshield wiper arm;

[0062] Figure 41 yes Figure 40 A partial sectional view;

[0063] Figure 42 This is a partial structural diagram of the twelfth type of car wiper arm and plastic wiper connector with the top cover removed.

[0064] Figure 43 This is a schematic diagram of the connection structure between the fixed connecting seat and the thirteenth type of automotive windshield wiper arm.

[0065] Figure 44 This is a partial structural diagram of the thirteenth type of automotive windshield wiper arm;

[0066] Figure 45 This is a partial structural diagram of the plastic wiper connector for the thirteenth type of automotive wiper arm connection.

[0067] Figure 46 This is a schematic diagram of the connection structure between the fixed connecting seat and the fourteenth type of automotive windshield wiper arm;

[0068] Figure 47 yes Figure 46 A partial sectional view;

[0069] Figure 48 yes Figure 46 A partial structural diagram of a plastic wiper head;

[0070] Figure 49 yes Figure 48 A partial sectional view;

[0071] Figure 50 yes Figure 48 Another partial sectional view. Detailed implementation method:

[0072] For example, see below. Figures 1 to 50 As shown, a riveting-free wiper connection device includes a fixed connecting seat 10 and a wiper blade 90. The fixed connecting seat 10 has a downwardly extending mounting groove 11 formed in the middle of its top surface. The lower part of the iron support seat 20 is inserted into the mounting groove 11 and locked in place. In this embodiment, the fixed connecting seat 10 is a plastic part made by plastic injection molding.

[0073] The bottom surface of the fixed connecting seat 10 has upwardly extending slots 12 formed at the front and rear. The bottom surface of the fixed connecting seat 10 has a through-hole 13 formed in the middle. The top surface of the through-hole 13 has an upper mounting through-hole 14 formed in the middle.

[0074] The left and right sides of the front and rear inner sidewalls of the middle part of the slot 12 are formed with protruding positioning parts 15. The inner sidewall of the bottom end of the protruding positioning part 15 is formed with a locking protrusion 151. The middle part of the elongated spring piece 30 is inserted into the upper mounting through groove 14. The top surface of the middle part of the elongated spring piece 30 is close to or near the top surface of the upper mounting through groove 14. The left and right sidewalls of the elongated spring piece 30 are close to the inner sidewall of the upper mounting through groove 14. The protruding positioning part 15 is inserted into the positioning hole formed on the front and rear sidewalls of the middle part of the elongated spring piece 30 and cooperates with it. The top surface of the locking protrusion 151 presses against or is close to the bottom surface of the edge of the elongated spring piece 30.

[0075] The elongated spring 30 has a centrally extending slot 31 formed in the middle, the upper part of the wiper blade 90 is inserted into the centrally extending slot 31, and the bottom wiper blade of the wiper blade 90 is located below the elongated spring 31.

[0076] Furthermore, the left and right sides of the elongated spring sheet 30 are fitted with elastic decorative protective strips 40, the inner ends of the elastic decorative protective strips 40 are fitted in the corresponding slots 12, and the inner end face of the elastic decorative protective strips 40 is close to or in close contact with the inner end face of the corresponding slots 12.

[0077] Furthermore, the lower inner end of the elastic decorative protective strip 40 is formed with an outwardly extending elongated slot 41, and the bottom surface of the middle part of the elongated slot 41 is formed with a lower through groove. The elongated spring piece 30 is inserted into the elongated slot 41, and the middle through groove 31 of the elongated spring piece 30 faces the lower through groove. The wiper blade 90 is inserted into the lower through groove, and the outer end face of the elongated spring piece 30 presses against the inner end face of the corresponding outer end of the elongated slot 41.

[0078] The top surface of the elastic decorative protective strip 40 is formed with an elongated protruding strip, which is engaged in the strip-shaped slot formed in the middle of the top surface of the corresponding slot 12.

[0079] Furthermore, the elongated spring 30 has positioning grooves 32 formed on the front and rear sidewalls near its end, and the elongated slot 41 has positioning parts 42 formed on the front and rear inner sidewalls near its end, with the positioning parts 42 inserted into the corresponding positioning grooves 32.

[0080] Furthermore, the front and rear side walls of the upper part of the wiper blade 90 are formed with side grooves extending to the left and right, and the front and rear wall panels of the middle through groove 31 are nested in the corresponding side grooves.

[0081] Furthermore, the front and rear sidewalls of the intermediate locking groove 31 near the left and right ends are formed with forward or backward extending side expansion grooves 33. The side of the side expansion groove 33 at the left end and the side expansion groove 33 at the right end that are close to each other are inclined walls. The right ends of the inclined walls of the two side expansion grooves 33 on the left side are close to each other and the left ends are far apart. The left ends of the inclined walls of the two side expansion grooves 33 on the right end are close to each other and the right ends are far apart.

[0082] The extended groove 33 on this side facilitates the installation of the wiper blade 90 into the elongated spring 30 after it extends along the extended groove 33 on this side.

[0083] Furthermore, the bottom surface of the mounting groove 11 is formed with a central support protrusion 111 extending forward and backward. The middle of the left and right side walls of the central support protrusion 111 is formed with an extension portion. The front and rear ends of the central support protrusion 111 are formed on the front and rear inner side walls of the mounting groove 111. The top surfaces of the front and rear ends of the central support protrusion 111 are formed with circular locking portions 112. The circular locking portions 112 are formed on the inner side walls of the front or rear of the mounting groove 111.

[0084] Furthermore, the mounting grooves 11 on the left and right sides of the middle support protrusion 111 are formed with side positioning grooves 113 on the front and rear inner walls, and the top surface of the side positioning groove 113 is formed with a downwardly extending side connecting part 114. The corresponding side connecting parts 114 on the front and rear sides are formed with locking protrusions 115 on their opposite walls.

[0085] Furthermore, the iron support base 20 includes two side fixing plates 21, one at the front and one at the back. The bottom surfaces of the left and right sides of the two side fixing plates 21 are formed with the same bottom plate 22 extending from front to back. The middle of the left and right sides of the side fixing plates 21 are formed with positioning through holes 23. The bottom surface of the bottom plate 22 is pressed against the bottom surface of the mounting groove 11. The outer side wall of the side fixing plate 21 is in close contact with the corresponding inner side wall of the mounting groove 11. The locking protrusion 115 is locked in the corresponding positioning through hole 23.

[0086] Furthermore, the bottom surface of the middle part of the two side fixing plates 21 is formed with an upward extending through groove 24, and the top surface of the extending through groove 24 is formed with a circular locking through hole 25 with a diameter greater than the distance between the left and right side walls of the extending through groove 24. The end of the middle support protrusion 111 is located in the corresponding extending through groove 24, and the circular locking part 112 is locked in the corresponding circular locking through hole 25.

[0087] The upper middle part of the left and right side walls of the mounting groove 11 is formed with a middle locking part 116, and the two bottom plates 22 are located below the corresponding middle locking part 116 at opposite ends.

[0088] In this embodiment, the iron support base 20 is installed on the fixed connecting base 10 by a snap-fit ​​method. It can be flipped and installed as needed, that is, the left and right ends can be flipped 180° before installation, so that it can be used as needed. For example, when installing the left connecting arm of the car wiper, the snap-fit ​​shaft part 26 of the iron support base 20 can be in the middle right side. When installing the right connecting arm of the car wiper, the iron support base 20 can be flipped 180° so that its snap-fit ​​shaft part 26 is in the middle left side. This embodiment can be installed on the left or right connecting arm of the car wiper, and the application effect is good.

[0089] In this embodiment, the iron support base 20 is fixed by the positioning through hole 23 of the side fixing plate 21 and the locking protrusion 115 of the fixed connecting base 10, and the circular locking part 112 is locked in the corresponding circular locking through hole 25 to achieve connection and fixation. The fixation is firm. The elongated spring piece 30 is installed in the fixed connecting base 10. The iron support base 20 and the elongated spring piece 30 are not directly contacted and fixedly connected. Instead, they are fixedly connected by the fixed connecting base 10 made of plastic parts. This reduces the riveting process, and the elongated spring piece 30 will not be damaged, thus ensuring its elastic effect.

[0090] The long spring 30 is protected and fixed by two elastic decorative protective strips 40. The long spring 30 does not use riveting or other processes, which makes it more elastic and allows the bottom wiper part to fit in close to the car's glass surface. This makes it less prone to vibration and abnormal noise during wiping, and also prevents missed wiping. The absence of riveting saves on manufacturing processes and product costs.

[0091] Furthermore, a front-to-back extending locking shaft portion 26 is formed between the upper parts of the two side fixing plates 21, and the plastic wiper connector 50 is locked onto the locking shaft portion 26.

[0092] The plastic wiper connector 50 has an upwardly extending upper locking groove formed in the middle of its bottom surface. The upper locking groove communicates with the side slots formed on the front and rear sides of the middle of the bottom surface of the plastic wiper connector 50. The upper parts of the two side fixing plates 21 are inserted into the corresponding side slots, the locking shaft part 26 is locked in the upper locking groove, and the corresponding car wiper arm 60 is installed on the plastic wiper connector 50.

[0093] like Figures 13 to 14As shown, the end of this car wiper arm 60 (the first type of car wiper arm) is an arc-shaped hook (this embodiment has two types of car wiper arms 60 with arc-shaped hooks), which is inserted into the plastic wiper connector 50. Its bottom bent part is located in the middle of the bottom surface of the plastic wiper connector 50 and below the locking shaft part 26. The arc-shaped part of the arc-shaped hook is inserted into the middle through groove of the plastic wiper connector 50. The plastic wiper connector 50 is covered with a locking outer cover. The vertical part 61 formed in the middle of the outer cover is inserted into the middle through groove and is located outside the arc-shaped part of the arc-shaped hook, thus achieving positioning.

[0094] like Figure 15 As shown, the front and rear walls of the plastic wiper connector 50 are formed with through holes extending forward and backward. The through holes are aligned with and correspond to the arc-shaped grooves formed on the top surfaces of the two side fixing plates 21 of the iron support base 20. The end side wall of the corresponding car wiper arm 60 (the second type of car wiper arm) is closely attached to the outer side wall of the front or rear side plate of the plastic wiper connector 50. The connecting shaft formed on it is inserted into the corresponding through hole and fitted into the corresponding arc-shaped groove. A bent part is formed on the end side wall of the car wiper arm 60. The end of the bent part is formed with a vertical bent part, which presses against the outer side wall of the rear or front side plate of the plastic wiper connector 50, thereby fixing it to the plastic wiper connector 50.

[0095] like Figures 16 to 18 As shown, the top surface of the plastic wiper connector 50 from the middle to the right is formed with a slot, and the front and rear sides of the slot are formed with downwardly extending side slots. The bottom right side of the slot is formed with a through hole, and the middle right side wall of the through hole is formed with an extension. The end of the extension is formed with an upwardly extending elastic locking part 51. The end of the corresponding car wiper arm 60 (the third type of car wiper arm) is formed with a groove-shaped mounting part that is inserted into the slot and the side slot. The elastic locking part 51 is inserted into the middle through hole of the top plate of the groove-shaped mounting part to achieve connection.

[0096] like Figure 19 As shown, the difference between the third type of windshield wiper arm 60 and the fourth type of windshield wiper arm 60 is that the latter has a bend. The rest of the structure is basically the same as the third type of windshield wiper arm, and will not be described in detail here.

[0097] like Figures 20 to 23As shown, the top surface of the plastic wiper connector 50 has two downwardly extending side slots formed from the middle to the right end. The right end of the side slots extends out of the right side wall of the plastic wiper connector 50. The front and rear parts of the right end of the plastic wiper connector 50, located between the two side slots, are both formed with rightward extending portions 52. The outer end of the extending portion 52 is formed with an elastic locking portion 53. The top plate of the left end of the fifth type of car wiper arm 60 has downwardly extending side insertion portions formed from the front and rear. The bottom surface of the middle part and the bottom surface of the left end of the side insertion portion are both formed with extension portions. The extension portions are inserted into and locked in the downwardly extending lower slot formed on the bottom surface of the left end of the corresponding side slot and the downwardly extending through groove formed on the bottom surface of the middle part of the side slot, thus achieving connection. The left end face of the two elastic locking portions 53 rests against the right end face of the side insertion portion, thus achieving connection.

[0098] like Figures 24 to 27 As shown, the top surface of the plastic wiper connector 50 from the middle to the right side has a slot formed, and the front and rear sides of the slot have downwardly extending side slots formed. The left end of the slot has a leftward extending insertion hole 55. The end of the corresponding car wiper arm 60 (sixth type of car wiper arm) has a groove-shaped mounting part that is inserted into the slot and the side slot. The middle left end of the top plate of the groove-shaped mounting part has a leftward extending bending part that is inserted into the insertion hole 55. The inner side of the front and rear wall plates of the right end of the plastic wiper connector 50 has a right extension part. The outer side wall of the right end of the right extension part has an elastic protrusion part. The bottom right end of the front and rear side plates of the car wiper arm 60 has an extension locking part 55, which is located in the right extension part and is clamped between the right end of the front or rear side plate of the plastic wiper connector 50 and the extension locking part 55.

[0099] like Figures 28 to 30 As shown, the top surface of the plastic wiper connector 50 has a slot extending to the left and right in the middle. The inner sidewalls of the slot have a locking part. The bottom left of the slot has an elastic part extending upward. The top of the elastic part has a top plate positioning part 56. The top right of the plastic wiper connector 50 has a slot that extends from front to back. The connecting block of the end of the seventh type of car wiper arm 60 is hinged and inserted into the slot. The cover is closed and locked in the slot. The top plate positioning part 56 is inserted into the positioning hole in the middle of the top cover plate of the cover to achieve fixation.

[0100] like Figures 31 to 33As shown, the upper right end of the plastic wiper connector 50 has an upper horizontal slot extending to the left, the top left end of the upper horizontal slot has a downward extending extension, the top surface of the upper horizontal slot has an upward extending central through groove, and the top right end of the upper horizontal slot has a protruding locking part. The rod of the eighth type of car wiper arm 60 is inserted into the upper horizontal slot, and its end is bent downward and then horizontally extended to the left to form a left extension. The extension is located at the top surface of the left extension, and the protruding locking part is inserted into the positioning through hole formed on the rod.

[0101] like Figures 34 to 35 As shown, the top surface of the plastic wiper connector 50 from the middle to the right is formed with a slot, and the front and rear sides of the slot are formed with downwardly extending side slots. The bottom surface of the middle of the side slot is formed with an upwardly extending side groove, the top surface of the side groove is formed with a downwardly extending extension, the outer side wall of the extension is formed with a positioning and locking part, and the left side wall of the side slot is formed with a protrusion. The end of the ninth type of car wiper arm 60 is formed with a groove-shaped mounting part that is inserted into the slot and the side slot. The positioning and locking part is inserted into the positioning hole in the middle of the bottom surface of the front and rear side plates of the groove-shaped mounting part, and the protrusion is inserted into the slot in the middle of the left side wall of the front and rear side plates of the groove-shaped mounting part, thereby achieving connection.

[0102] like Figure 36 As shown, this is the tenth type of car wiper arm 60. Its structure is similar to the fourth type of car wiper arm 60 installation structure. The difference is that the left side wall of the corresponding side slot is formed with an extension positioning part that extends to the right.

[0103] like Figures 37 to 39 As shown, the left bottom surface of the front and rear wall panels of the plastic wiper connector 50 has an extension portion formed. The eleventh type of automotive wiper arm 60 is fitted onto the plastic wiper connector 50. The left and right bottom surfaces of the front and rear wall panels have bending and positioning portions formed. The right side wall of the bending and positioning portion on the left side presses against the left side wall of the extension portion, and the bending and positioning portion on the right side presses against the right side wall of the corresponding side panel of the plastic wiper connector 50.

[0104] A slot is formed on the top surface from the middle to the right. Side slots extending downward are formed on the front and rear sides of the slot. A side through groove extending upward is formed on the bottom surface of the middle of the side slot. An extension extending downward is formed on the middle of the top surface of the side through groove. A positioning and locking part is formed on the middle of the outer side wall of the extension. A protrusion is formed on the middle of the left side wall of the side slot. The end of the ninth type of car wiper arm 60 is formed with a groove-shaped mounting part that is inserted into the slot and the side slot. The positioning and locking part is inserted into the positioning hole in the middle of the bottom surface of the front and rear side plates of the groove-shaped mounting part. The protrusion is inserted into the slot in the middle of the left side wall of the front and rear side plates of the groove-shaped mounting part to achieve connection.

[0105] like Figures 40 to 42As shown, multiple side positioning parts are formed on the middle outer side walls of the front and rear wall panels of the plastic wiper connector 50. A left clamping block is formed on the left side of the plastic wiper connector 50. Vertical protrusions are formed on the front and rear wall surfaces of the left clamping block. The twelfth type of car wiper arm 60 is fitted onto the plastic wiper connector 50 and the left clamping block. The vertical protrusions and side positioning parts are inserted into the corresponding positioning holes formed on the front and rear side panels of the twelfth type of car wiper arm 60. Then, the upper cover is fitted onto the corresponding car wiper arm 60 and the left clamping block. Extensions are formed on the bottom surfaces of the front and rear side panels of the upper cover. The extensions are located at the bottom surfaces of the front and rear side panels of the corresponding car wiper arm 60, thus achieving fixed installation.

[0106] like Figures 43 to 45 As shown, the top surface of the plastic wiper connector 50 from the middle to the right is formed with a slot, and the front and rear sides of the slot are formed with downwardly extending side slots. The side wall of the middle of the side slot is formed with a protruding positioning part. The end of the thirteenth type of car wiper arm 60 is formed with a groove-shaped mounting part that is inserted into the slot and the side slot. The protruding positioning part is engaged in the positioning through hole of the front and rear wall plates of the groove-shaped mounting part to achieve connection.

[0107] like Figures 46 to 50 As shown, the upper part of the right end face of this plastic wiper connector 50 is formed with an upper slot extending to the left. The fourteenth type of car wiper arm 60 is a straight rod that is inserted into the upper slot. A groove is formed on the front side wall of the left part of the rod. The upper slot has an upper through hole formed on the top surface corresponding to the groove, and a downward-extending through groove formed on the corresponding bottom surface. A bending plate portion 66 extending forward and downward is formed on the inner side wall of the through groove. An elastic extension portion 67 is formed on the top surface of the front end of the bending plate portion 66. A pressing portion 68 is formed on the top of the elastic extension portion 67. The pressing portion 68 is inserted into the upper slot and is located above the groove. A protrusion is formed on the inner side wall of the elastic extension portion 67. The protruding part 69 is inserted into the corresponding groove to limit and fix the rod body. The right side wall of the protruding part 69 is an inclined wall extending to the left and back. This ensures that when the fourteenth type of car wiper arm 60 is inserted, the protruding part 69 and the elastic extension part 67 are automatically pushed forward and installed in place. After the elastic extension part 67 elastically returns, the protruding part 69 is inserted into the groove and fixed. When disassembly is required, simply press the actuating part 68 to deform the elastic extension part 67 forward and downward, so that the protruding part 69 is moved out of the groove, and the insertion end of the fourteenth type of car wiper arm 60 can be removed. It is easy to install.

[0108] The above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the present invention, and the patent protection scope of the present invention should be defined by the claims.

Claims

1. A riveting-free wiper connection device, comprising a fixed connecting base (10) and a wiper blade (90), characterized in that: The top surface of the fixed connecting seat (10) is formed with a downwardly extending mounting groove (11), and the lower part of the iron support seat (20) is inserted into the mounting groove (11) and fixed in place. The bottom surface of the fixed connecting seat (10) is formed with an upwardly extending slot (12) at the front and rear. The bottom surface of the fixed connecting seat (10) is formed with a through inner groove (13) that runs from left to right. The top surface of the through inner groove (13) is formed with an upper mounting groove (14) that runs from left to right. The left and right sides of the front and rear inner sidewalls of the middle part of the slot (12) are formed with protruding positioning parts (15), and the inner sidewall of the bottom end of the protruding positioning part (15) is formed with a locking protrusion (151). The middle part of the elongated spring (30) is inserted into the upper mounting through groove (14). The top surface of the middle part of the elongated spring (30) is close to or near the top surface of the upper mounting through groove (14). The left and right sidewalls of the elongated spring (30) are close to the inner sidewall of the upper mounting through groove (14). The protruding positioning part (15) is inserted into the positioning hole formed on the front and rear sidewalls of the middle part of the elongated spring (30) and cooperates with it. The top surface of the locking protrusion (151) presses against or is close to the bottom surface of the edge of the elongated spring (30). The elongated spring (30) has a left-right extending central locking groove (31) formed in the middle. The upper part of the wiper blade (90) is locked in the central locking groove (31), and the bottom shaving part of the wiper blade (90) is located below the elongated spring (31).

2. The riveting-free wiper connection device according to claim 1, characterized in that: The left and right sides of the elongated spring (30) are fitted with elastic decorative protective strips (40), the inner end of the elastic decorative protective strip (40) is fitted in the corresponding slot (12), and the inner end face of the elastic decorative protective strip (40) is close to or in close contact with the inner end face of the corresponding slot (12).

3. The riveting-free wiper connection device according to claim 1, characterized in that: The lower inner end of the elastic decorative protective strip (40) is formed with an outwardly extending elongated slot (41). The bottom surface of the elongated slot (41) is formed with a lower through groove. The elongated spring piece (30) is inserted in the elongated slot (41). The middle through groove (31) of the elongated spring piece (30) faces the lower through groove. The wiper blade (90) is inserted in the lower through groove. The outer end face of the elongated spring piece (30) presses against the inner end face of the corresponding outer end of the elongated slot (41).

4. The riveting-free wiper connection device according to claim 3, characterized in that: The top surface of the elastic decorative protective strip (40) is formed with an elongated protrusion, which is engaged in the strip-shaped groove formed in the middle of the top surface of the corresponding groove (12).

5. The riveting-free wiper connection device according to claim 1, characterized in that: The elongated spring (30) has a positioning groove (32) formed on the front and rear side walls near the end, and the elongated slot (41) has a positioning part (42) formed on the front and rear inner side walls near the end. The positioning part (42) is inserted into the corresponding positioning groove (32).

6. The riveting-free wiper connection device according to claim 1, characterized in that: The upper front and rear side walls of the wiper blade (90) are formed with side grooves extending to the left and right, and the front and rear wall panels of the middle through groove (31) are nested in the corresponding side grooves.

7. The riveting-free wiper connection device according to claim 1, characterized in that: The bottom surface of the mounting groove (11) is formed with a central support protrusion (111) extending forward and backward. The middle of the left and right side walls of the central support protrusion (111) is formed with an extension. The front and rear ends of the central support protrusion (111) are formed on the front and rear inner side walls of the mounting groove (11). The top surfaces of the front and rear ends of the central support protrusion (111) are formed with circular locking parts (112). The circular locking parts (112) are formed on the inner side walls of the front or rear of the mounting groove (11). Side positioning grooves (113) are formed on the front and rear inner walls of the mounting grooves (11) on the left and right sides of the intermediate support protrusion (111). A downwardly extending side connecting part (114) is formed in the middle of the top surface of the side positioning groove (113). A locking protrusion (115) is formed on the opposite wall surface of the corresponding front and rear side connecting parts (114). The iron support base (20) includes two side fixing plates (21) at the front and back. The bottom surfaces of the left and right sides of the two side fixing plates (21) are formed with the same bottom plate (22) extending from front to back. The middle of the left and right sides of the side fixing plates (21) are formed with positioning through holes (23). The bottom surface of the bottom plate (22) is pressed against the bottom surface of the mounting groove (11). The outer side wall of the side fixing plate (21) is close to the corresponding inner side wall of the mounting groove (11). The locking protrusion (115) is locked in the corresponding positioning through hole (23).

8. The riveting-free wiper connection device according to claim 7, characterized in that: The bottom surface of the middle part of the two side fixing plates (21) is formed with an upward extending through groove (24). The top surface of the extending through groove (24) is formed with a circular locking through hole (25) with a diameter greater than the distance between the left and right side walls of the extending through groove (24). The end of the middle support protrusion (111) is located in the corresponding extending through groove (24), and the circular locking part (112) is locked in the corresponding circular locking through hole (25).

9. A riveting-free wiper connection device according to claim 7, characterized in that: A locking shaft portion (26) extending forward and backward is formed between the upper parts of the two side fixing plates (21), and the plastic wiper connector (50) is locked on the locking shaft portion (26).

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