Connecting piece for wiper blade and wiper arm

Abstract

The utility model belongs to the technical field of automobile parts, and particularly relates to a connecting piece of a wiper blade and a wiper arm, which comprises a plastic part and a metal frame embedded in the plastic part, and the plastic part and the metal frame are integrally formed in an injection molding mode. The metal frame is embedded in the plastic part, so that the structural strength of the connecting piece is improved, and the situation that the connecting piece is subjected to plastic deformation or accidental breakage after being scraped for a long time and normal use of the wiper blade is affected can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts, in particular to a connecting piece of a wiper blade and a wiper arm. Background Art

[0002] The existing connecting structure between automobile wiper blades and wiper arms is made of pure plastic material. Due to the reciprocating wiping motion of the wiper blades, the wiper arms will directly impact the connecting parts. After long-term reciprocating use, the plastic connecting structure will undergo plastic deformation or abnormal fracture, which will affect the stability and use effect of the wiper blades, affecting the wiping experience and causing safety hazards in use.

[0003] In addition, connectors made of pure plastic will gradually age during long-term outdoor use under wind, sun and rain. Especially since these parts are used to enhance vision and involve driving safety during driving, they have higher requirements for product structural strength. If plastic parts age, it will cause serious personal safety problems. Utility Model Content

[0004] In order to solve the problems in the above-mentioned background technology, the utility model provides a connecting piece between a wiper blade and a wiper arm. By embedding a metal frame in a plastic part, the structural strength of the connecting piece is improved, so as to prevent the connecting piece from being plastically deformed or accidentally broken after long-term wiping, thereby affecting the normal use of the wiper blade.

[0005] The utility model adopts the following technical solutions:

[0006] A connecting piece for a wiper blade and a wiper arm comprises a plastic piece and a metal frame embedded in the plastic piece. The plastic piece and the metal frame are integrally formed by injection molding.

[0007] Furthermore, the plastic part is a hollow structure, including a first side wall and a second side wall arranged oppositely, and a connecting shaft is fixed between the first side wall and the second side wall; the metal frame includes a first frame and a second frame arranged oppositely, the first frame is embedded in the first side wall, and the second frame is embedded in the second side wall;

[0008] A first slot step is provided on the inner side of the first side wall, and a second slot step is provided on the inner side of the second side wall; a first positioning slot matching the first slot step is provided on the first frame, and a second positioning slot matching the second slot step is provided on the second frame.

[0009] Furthermore, the metal frame also includes a third frame connected between the first frame and the second frame, the upper surface of the third frame is a first positioning surface, and a second positioning surface matching the first positioning surface is provided in the hollow structure of the plastic part.

[0010] Furthermore, a first buckle structure is provided on the inner side surface of the first frame, and a second buckle structure is provided on the inner side surface of the second frame; the first buckle structure and the second buckle structure are buckled together to keep the distance between the first frame and the second frame constant; the first buckle structure and the second buckle structure are both embedded in the connecting shaft.

[0011] Furthermore, the first buckle structure is a first connecting plate perpendicular to the first frame, and a plug-in groove is provided at the end of the first connecting plate; the second buckle structure is a second connecting plate perpendicular to the second frame, and a plug-in block is provided at the end of the second connecting plate; or a plug-in block is provided at the end of the first connecting plate, and a plug-in groove is provided at the end of the second connecting plate; the plug-in block is fixedly plugged into the plug-in groove; the plug-in groove and the plug-in block are both structures that are wide on the outside and small on the inside.

[0012] Furthermore, the first buckle structure is a first connecting plate perpendicular to the first frame, a first slot is provided on the upper end surface of the first connecting plate, and a first bending portion is provided on the lower end surface; the second buckle structure is a second connecting plate perpendicular to the second frame, a second bending portion is provided on the upper end surface of the second connecting plate, and a second slot is provided on the lower end surface; the first bending portion is buckled on the second slot, and the second bending portion is buckled on the first slot.

[0013] Furthermore, the first buckle structure is a first connecting plate perpendicular to the first frame, and a snap-in groove is provided on the upper end surface of the first connecting plate; the second buckle structure is a second connecting plate perpendicular to the second frame, and a snap-in block is provided on the second connecting plate to be snapped into the snap-in groove.

[0014] Furthermore, a first connecting hole is provided on the first frame, and a second connecting hole is provided on the second frame. Rivets pass through the first connecting hole and the second connecting hole to fix the first frame and the second frame into one body.

[0015] Furthermore, a plurality of through holes are provided on the side wall of the metal frame.

[0016] Furthermore, ribs extending along the length direction of the metal frame are provided on the outer sides of the first frame and the second frame.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The connecting piece of the utility model is composed of a plastic piece and a metal frame embedded in the plastic piece, and the metal frame and the plastic piece are integrally formed, thereby improving the structural strength of the connecting piece and preventing the connecting piece from being plastically deformed or accidentally broken after long-term scraping and wiping, thereby affecting the normal use of the wiper blade.

[0019] (2) The metal frame of the utility model includes a first frame and a second frame that are arranged opposite to each other. The bottom of the first frame is provided with a first positioning slot, the bottom of the second frame is provided with a second positioning slot, and the top of the third frame is provided with a first positioning surface, so that the metal frame can be fixed inside the mold cavity to ensure that it does not move during the injection molding process.

[0020] (3) The utility model provides rib structures on both sides of the metal frame to improve the structural strength of the connecting piece; and provides a plurality of circular holes on the side wall of the metal frame to ensure that the plastic part and the metal frame can be tightly connected together after injection molding.

[0021] (4) The utility model is provided with a first buckle structure on the first frame, and a second buckle structure on the second frame. The first buckle structure and the second buckle structure are located in the connecting shaft of the plastic part to enhance the structural strength of the connecting shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is the structural diagram of the plastic part (I);

[0024] Figure 2 This is the structural diagram of the plastic part (II);

[0025] Figure 3 This is a metal frame structure diagram of the first embodiment of the utility model;

[0026] Figure 4 It is a side view of the metal frame of the first embodiment of the utility model;

[0027] Figure 5 This is a metal frame structure diagram (I) of the second embodiment of the present utility model;

[0028] Figure 6 This is a metal frame structure diagram (II) of the second embodiment of the present utility model;

[0029] Figure 7 This is a metal frame structure diagram of the third embodiment of the present utility model;

[0030] Figure 8 It is a side view of the metal frame of the third embodiment of the utility model;

[0031] Fig. 9 This is a metal frame structure diagram of the fourth embodiment of the present utility model;

[0032] Wherein: 1-plastic part, 11-first side wall, 111-first slot step, 12-second side wall, 121-second slot step, 13-connecting shaft, 14-second positioning surface, 2-metal frame, 21-first frame, 211-first positioning slot, 22-second frame, 221-second positioning slot, 23-third frame, 231-first positioning surface, 24-first buckle structure, 241-first connecting plate, 2411-plug-in slot, 2412-first slot, 2413-first bending portion, 2414-clamping slot, 25-second buckle structure, 251-second connecting plate, 2511-plug-in block, 2512-second slot, 2513-second bending portion, 2514-clamping block, 3-rivet, 4-through hole, 5-rib. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the utility model.

[0034] The following is combined with Figure 1 To Attachment Fig. 9 And specific embodiments describe the present invention in detail.

[0035] like Figure 1-9 As shown, the utility model provides a connection piece for a wiper blade and a wiper arm, comprising a plastic part 1 and a metal frame 2 embedded in the plastic part 1, wherein the plastic part 1 and the metal frame 2 are integrally formed by injection molding. In the present application, the metal frame 2 is embedded in the plastic part 1, thereby improving the overall structural strength of the connection piece, and preventing the connection piece from being plastically deformed or accidentally broken after long-term scraping and wiping, thereby affecting the normal use of the wiper blade.

[0036] Specifically, the plastic part 1 is a hollow structure, including a first side wall 11 and a second side wall 12 arranged opposite to each other, a connecting shaft 13 is fixedly provided between the first side wall 11 and the second side wall 12, and a connecting seat of the wiper blade is rotatably connected to the connecting shaft 13. The connecting seat is not a protection scheme of the present application and is not described here; the metal frame 2 includes a first frame 21 and a second frame 22 arranged opposite to each other, the first frame 21 is embedded in the first side wall 11, and the second frame 22 is embedded in the second side wall 12; a first card slot step 111 is provided on the inner side surface of the first side wall 11, and a second card slot step 121 is provided on the inner side surface of the second side wall 12; a first positioning card slot 211 is provided on the first frame 21 to cooperate with the first card slot step 111, and a second positioning card slot 221 is provided on the second frame 22 to cooperate with the second card slot step 121. The metal frame 2 also includes a third frame 23 connected between the first frame 21 and the second frame 22. The upper surface of the third frame 23 is a first positioning surface 231. The hollow structure of the plastic part 1 is provided with a second positioning surface 14 that matches the first positioning surface 231. The present application ensures that the metal frame 2 will not be impacted by the molten plastic resin and move during the injection molding process, thereby ensuring that the metal frame 2 is embedded in the plastic part 1 according to the predetermined position after the injection molding is completed, through the matching positioning of the first positioning slot 211 and the first slot step 111, the second positioning slot 221 and the second slot step 121, and the first positioning surface 231 and the second positioning surface 14.

[0037] In some embodiments, in order to ensure the structural strength of the metal frame 2 itself, a first buckle structure 24 is provided on the inner side of the first frame 21, and a second buckle structure 25 is provided on the inner side of the second frame 22; the first buckle structure 24 and the second buckle structure 25 are buckled and connected, so that the distance between the first frame 21 and the second frame 22 is fixed and unchanged, and at the same time, it can ensure that the metal frame 2 is firmly connected and does not deform under the high-pressure impact of the molten liquid in the plastic mold cavity. The first buckle structure 24 and the second buckle structure 25 are both embedded in the connecting shaft 13, which can improve the structural strength of the connecting shaft 13 on the plastic part. The present application does not limit the specific overlapping and fixing form of the first buckle structure 24 and the second buckle structure 25. As long as the two can be firmly connected, they all belong to the protection scope of the present application.

[0038] See also Figure 3 , Figure 4In the first embodiment shown, the first buckle structure 24 is a first connecting plate 241 perpendicular to the first frame 21, and an insertion groove 2411 is provided on the end of the first connecting plate 241 away from the first frame 21; the second buckle structure 25 is a second connecting plate 251 perpendicular to the second frame 22, and an insertion block 2511 is provided on the end of the second connecting plate 251 away from the second frame 22; or a plug-in block is provided on the end of the first connecting plate 241 away from the first frame 21, and an insertion groove is provided on the end of the second connecting plate 251 away from the second frame 22; the first connecting plate 241 and the second connecting plate 251 can be fixedly connected by plugging the plug-in block 2511 into the plug-in groove 2411; and the plug-in groove 2411 and the plug-in block 2511 are both structures with a wide outside and a small inside, ensuring that the first buckle structure 24 and the second buckle structure 25 will not become loose after being buckled together.

[0039] See also Figure 5 , Figure 6 In the second embodiment shown, the first buckle structure 24 is a first connecting plate 241 perpendicular to the first frame 21, a first slot 2412 is provided on the upper end surface of the first connecting plate 241, and a first bent portion 2413 is provided on the lower end surface; the second buckle structure 25 is a second connecting plate 251 perpendicular to the second frame 22, a second bent portion 2513 is provided on the upper end surface of the second connecting plate 251, and a second slot 2512 is provided on the lower end surface; the first bent portion 2413 is buckled on the second slot 2512, and the second bent portion 2513 is buckled on the first slot 2412. That is, the above structure is a double-layer buckle structure, the first connecting plate and the second connecting plate are fixed together by overlapping each other, and after the buckle docking is completed, it can ensure that the connection is firm and not loose.

[0040] See also Figure 7 , Figure 8 In the third embodiment shown, the first buckle structure 24 is a first connecting plate 241 perpendicular to the first frame 21, and a clamping groove 2414 is provided on the upper end surface of the first connecting plate 241; the second buckle structure 25 is a second connecting plate 251 perpendicular to the second frame 22, and a clamping block 2514 is provided on the second connecting plate 251 to be clamped in the clamping groove 2414. This structure is a structural feature of the upper and lower buckles, which can also ensure the reliability of the buckle connection and will not loosen during the injection molding process.

[0041] See also Fig. 9 In the fourth embodiment shown, a first connection hole is provided on the first frame 21, and a second connection hole is provided on the second frame 22. The rivet 3 passes through the first connection hole and the second connection hole to fix the first frame 21 and the second frame 22 as a whole. The first frame 21 and the second frame 22 can also be connected as a whole by rivet connection, and the firmness of the connection can be effectively ensured.

[0042] Specifically, in some embodiments, a plurality of through holes 4 are provided on the side wall of the metal frame 2. The present application does not specifically limit the size, shape and number of the through holes 4. The sizes and shapes of the plurality of through holes 4 may be the same or different. Because the metal frame 2 is connected to the plastic part 1 by injection molding, in order to ensure the tightness of the connection between the two, a plurality of through holes 4 are provided on the metal frame 2, which can ensure that after the injection molding of the product is completed, the metal frame 2 and the plastic part 1 can be completely combined into one, further strengthening the firmness of the connection.

[0043] Specifically, in some embodiments, the outer sides of the first frame 21 and the second frame 22 are provided with ribs 5 extending along the length direction of the metal frame 2. The provision of the ribs 5 can enhance the strength of the first frame 21 and the second frame 22, thereby indirectly enhancing the overall strength of the connector.

[0044] The utility model is further described above with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the utility model. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the utility model.

Claims

1. A connecting piece for a wiper blade and a wiper arm, characterized in that: It comprises a plastic part and a metal frame embedded in the plastic part, wherein the plastic part and the metal frame are integrally formed by injection molding; The plastic part is a hollow structure, including a first side wall and a second side wall arranged opposite to each other; the metal frame includes a first frame and a second frame arranged opposite to each other, the first frame is embedded in the first side wall, and the second frame is embedded in the second side wall.

2. The connecting piece of the wiper blade and the wiper arm according to claim 1, characterized in that: A connecting shaft is fixed between the first side wall and the second side wall, a first slot step is provided on the inner side surface of the first side wall, and a second slot step is provided on the inner side surface of the second side wall; a first positioning slot matching with the first slot step is provided on the first frame, and a second positioning slot matching with the second slot step is provided on the second frame.

3. The connecting piece of the wiper blade and the wiper arm according to claim 2, characterized in that: The metal frame further includes a third frame connected between the first frame and the second frame, the upper surface of the third frame is a first positioning surface, and a second positioning surface matching the first positioning surface is provided in the hollow structure of the plastic part.

4. The connecting piece of the wiper blade and the wiper arm according to claim 2, characterized in that: A first buckle structure is provided on the inner side surface of the first frame, and a second buckle structure is provided on the inner side surface of the second frame; the first buckle structure and the second buckle structure are buckled together to keep the distance between the first frame and the second frame constant; the first buckle structure and the second buckle structure are both embedded in the connecting shaft.

5. The connecting piece of the wiper blade and the wiper arm according to claim 4, characterized in that: The first buckle structure is a first connecting plate perpendicular to the first frame, and a plug-in slot is provided at the end of the first connecting plate; the second buckle structure is a second connecting plate perpendicular to the second frame, and a plug-in block is provided at the end of the second connecting plate; or a plug-in block is provided at the end of the first connecting plate, and a plug-in slot is provided at the end of the second connecting plate; the plug-in block is fixedly plugged into the plug-in slot; the plug-in slot and the plug-in block are both structures with a wide outside and a small inside.

6. The connecting piece of the wiper blade and the wiper arm according to claim 4, characterized in that: The first buckle structure is a first connecting plate perpendicular to the first frame, with a first slot on the upper end surface of the first connecting plate and a first bent portion on the lower end surface; the second buckle structure is a second connecting plate perpendicular to the second frame, with a second bent portion on the upper end surface of the second connecting plate and a second slot on the lower end surface; the first bent portion is buckled on the second slot, and the second bent portion is buckled on the first slot.

7. The connecting piece of the wiper blade and the wiper arm according to claim 4, characterized in that: The first buckle structure is a first connecting plate perpendicular to the first frame, and a snap-in groove is provided on the upper end surface of the first connecting plate; the second buckle structure is a second connecting plate perpendicular to the second frame, and a snap-in block is provided on the second connecting plate that is snap-into the snap-in groove.

8. The connecting piece of the wiper blade and the wiper arm according to claim 2, characterized in that: The first frame is provided with a first connection hole, the second frame is provided with a second connection hole, and rivets pass through the first connection hole and the second connection hole to fix the first frame and the second frame into one body.

9. The connecting piece of the wiper blade and the wiper arm according to claim 1, characterized in that: A plurality of through holes are arranged on the side wall of the metal frame.

10. The connecting piece of the wiper blade and the wiper arm according to claim 2, characterized in that: Ribs extending along the length direction of the metal frame are provided on the outer sides of the first frame and the second frame.

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