TWM499348U - Adaptor of wiper and wiper assembly thereof - Google Patents

Abstract

This invention discloses an adaptor of wiper and a wiper assembly thereof. The adaptor is detachably coupled between a first wiper arm or a second wiper arm, and a wiper having a pivot, and comprising an adaptor body and a first coupling element. The first wiper arm and the second wiper arm have connected spaces respectively, openings of the connected spaces have maintenance edges, and protrusion parts that are mounted on the maintenance edges, and the protrusion parts of the two wiper arms are disposed at different edges of the maintenance edges. The adaptor body is comprised a top portion and two side portions downwardly extending from two sides of the top portion respectively, and the two sides of the top portion are transversely opposite with each other. An accommodating space is formed between the two side portions. When the adaptor body is inserted into the connected space of the first or the second wiper arm, the maintenance edges are blocked at lower edges of the two side parts. The first coupling element is disposed in the accommodating space, and goes beyond the two side portions, and includes a shaft cavity having a gap. The pivot is disposed in the shaft cavity thought the gap. The distances between the outer surfaces of each side and the side wall of the first coupling element are a larger than the protrusion parts to concurrently correspond with the protrusion parts that are respectively displaced opposite at the first and the second wiper arms so as to resolve technical problem concerning that an adaptor of wiper is unable to be displaced at the first and the second wiper arms simultaneously.

Description

Wiper blade adapter and wiper blade assembly

This creation is related to the technique of wiper blades (wipers), and in particular to the technique of coupling a wiper arm to a wiper blade with an adapter.

Vehicles usually use a wiper to scrape rain, snow and debris attached to the windshield to improve the visibility of the windshield, thereby improving visibility and increasing driving safety. The wiper includes a wiper blade and a wiper arm. The wiper blade can be detachably connected to a certain form of wiper arm by means of an adapter. When the wiper blade is worn to a certain extent, the wiper blade can be removed from the adapter and the new wiper blade can be easily replaced. However, when the adapter cannot be reliably fixed to the wiper blade, the wiper blade may not be maintained in a preset posture for wiping, thereby affecting the performance of the wiper.

In addition, conventional wipers used in vehicles are often arranged with two wiper blades. Since the two wiper arms on the same vehicle are not in the same configuration, the user cannot install it simply and intuitively during installation, and the adapter must be selected to match the adapter. Install on the wiper blade. Further, the two wiper arms are at the U-shaped shape and have a protrusion at the adapter for accommodating the wiper blade, but the protrusions of the two wiper arms are respectively set. On the different side walls, for example, the protrusion of the wiper arm adjacent to the driver's seat is disposed on the right side of the U-shaped shape, and adjacent to the vice The protrusion of the wiper arm of the driver's seat is provided with the U-shaped left side, so the wiper arm adjacent to the driver's seat must use the first wiper blade adapter corresponding to the right side of the U-shaped shape. The wiper arm adjacent to the passenger's seat must use the second wiper blade adapter corresponding to the left side of the U-shaped shape, and the wiper adapter of the same structure cannot be used. It is also suitable for the wiper arm installed in the adjacent driver's seat or passenger's seat. This situation causes many inconveniences for the user to install. In addition, for the wiper blade manufacturers, there are also many additional costs for mold design and production, material storage and other costs.

As mentioned above, the creator of this creation thinks about and designs a wiper blade adapter and its wiper blade assembly. After years of painstaking research, it has improved the lack of existing technology to enhance the industrial use.

In view of the above-mentioned problems of the prior art, the purpose of the present invention is to provide an adapter for a wiper blade and a wiper blade assembly thereof, so as to solve the problem that the existing adapter for the wiper blade cannot be simultaneously applied to the same mobile vehicle. The problem of poor installation convenience caused by each of the wiper arms.

According to the purpose of the present invention, an adapter for a wiper blade is provided for detachably coupling between a first wiper arm or a second wiper arm and a wiper blade having a pivot . The first wiper arm and the second wiper arm are respectively disposed in the connection space, and the connection space has a front opening at a longitudinal front side and a lower opening at a lower lateral direction, and opposite sides of the lower opening of the connection space are respectively provided with a retaining edge, The inner side of one of the retaining edges is provided with a projection protruding in the downward opening, and the projection of the first wiper arm and the second wiper arm is disposed on a different side of the retaining edge thereof. The wiper blade adapter includes an adapter body and a first coupling member. The adapter body includes a top portion and two side portions extending downward from the laterally opposite sides of the top portion, and a receiving space having a downward opening is formed between the two side portions. The adapter body can be inserted into the connection space of the first wiper arm or the second wiper arm via the front opening. When the adapter body is inserted in the connection space, The first coupling member protrudes from the middle portion of the top portion and protrudes downward from the middle portion of the two side portions and extends downwardly from the two side portions, and the first coupling member has a shaft cavity provided with the first notch, and the pivot shaft passes through the first The gap is inserted into the shaft cavity, and the lateral distance between the outer surface of each side portion and the side wall adjacent to the first coupling member is greater than the lateral inner edge of the protrusion of the first wiper arm and the second wiper arm to The distance of the inner side of the same side of the connection space.

Preferably, the wiper blade adapter further comprises a second coupling member; the second coupling member limiting adapter when the adapter body is inserted into the connection space of the first wiper arm or the second wiper arm The displacement of the body in the longitudinal direction of the first wiper arm or the second wiper arm.

Preferably, the top end of the adapter body has a second notch adjacent to the adapter body, the second coupling member is disposed on the second notch, and the second coupling member can include a resilient arm and a latching portion. The elastic arm extends from the edge of the second notch of the adapter body toward the middle of the notch. The buckle portion is disposed at a free end of the elastic arm, and a connecting portion of the first wiper arm or the second wiper arm is provided with a fastening portion. When the adapter body is inserted into the connection space of the first wiper arm or the second wiper arm, the buckle portion is fastened to the first wiper arm or the second wiper arm by elastic deformation of the elastic arm unit.

Preferably, the two side portions respectively protrude from the first coupling member to the limiting portion, and the lateral distance of the limiting portion to the first coupling member is less than or equal to 5.3 mm, and is not less than the first wiper arm or the second wiper The distance from the lateral inner edge of the projection of the arm to the inner side of the same side of its connection space.

Preferably, the diameter of the shaft cavity can correspond to the diameter of the pivot axis, and the width of the first notch can be smaller than the diameter of the shaft cavity; the first coupling member elastically deforms the pivot shaft into the shaft cavity, And limit the displacement of the adapter body in the up and down direction.

Preferably, the adapter body is respectively provided with a retaining groove on both sides of the first coupling member in the longitudinal direction.

Preferably, the positions of the two side portions axially opposite to the axial cavity may be respectively provided with notches. When the adapter body is inserted and positioned in the connection space of the first wiper arm or the second wiper arm, the protrusion is located below the notch.

Preferably, each of the limiting portions includes at least two spaced apart reinforcing ribs extending in the up and down direction, and the reinforcing ribs are integrally connected to the side portions.

According to the purpose of the present invention, there is further provided a wiper blade assembly comprising a wiper blade and an adapter for the above-mentioned wiper blade. The wiper blade adapter is detachably coupled between the wiper blade and the first wiper arm or the second wiper arm, and the first wiper arm or the second wiper arm is disposed on the same mobile vehicle on.

Preferably, the wiper blade may comprise a connector which is integrally bent upwardly from the laterally opposite sides to extend out of the two fixed walls, and the pivot shaft is fixed to the two fixed walls through the fixing wall. When the wiper blade adapter is mounted to the wiper, the two fixed walls of the connector are respectively inserted between the side portions and the first coupling member, and the lateral limit connector and the wiper blade adapter are laterally oriented. Relative displacement.

In the wiper blade assembly of the wiper blade adapter according to the present invention, since the first coupling member is disposed on the adapter body to be pivotally connected to the pivot on the connector of the wiper blade And the fixing wall of the connector is embedded in the limiting portion, so that a stable fixing in multiple directions can be provided between the adapter and the wiper blade. In addition, since the wiper arm is disposed on the adapter body in a covering manner, and the buckle portion of the second coupling member is engaged with the fastening portion of the wiper arm, the adapter and the wiper arm can also be used. A stable fixation between the multiple directions. With the above configuration, the wiper blade assembly can be easily mounted by the wiper blade adapter. In addition, since the wiper blade adapter is disposed in a symmetrical manner as a whole, it does not cause the problem of the pairing (direction) at the time of installation, and is directly applied to the two wiper arms of the vehicle without It will interfere with the protrusions on the different sides of the two wiper arms, such as the wiper arm on the driver's seat or the wiper arm on the passenger seat, thus providing the user with the installation. Convenience.

100‧‧‧ wiper blade assembly

1‧‧‧wiping plate adapter

11‧‧‧Adapter body

111‧‧‧ top

1111‧‧‧ second gap

112, 112a, 112b‧‧‧ side

1121‧‧ ‧ gap

113‧‧‧ accommodating space

114‧‧‧Limited

1141‧‧‧Strengthened ribs

115‧‧‧Let the slot

12‧‧‧First coupling

121‧‧‧Axis cavity

1211‧‧‧ first gap

13‧‧‧Second coupling

131‧‧‧Flexible arm

132‧‧‧Snap Department

2‧‧‧ wiper blade

21‧‧‧Connector

211‧‧‧ pivot

212‧‧‧Fixed wall

3‧‧‧First wiper arm

31‧‧‧ front opening

32‧‧‧ opening

33‧‧‧ Keeping the edge

34‧‧‧First protrusion

35‧‧‧Deduction Department

4‧‧‧Second wiper arm

41‧‧‧second protrusion

Fig. 1 is a first schematic view of the wiper adapter of the present invention.

Fig. 2 is a second schematic view of the adapter for the wiper blade of the present invention.

Figure 3 is a schematic diagram of the explosion of the wiper blade assembly of the present invention.

Figure 4 is a schematic cross-sectional view of the wiper blade assembly of the present invention.

Figure 5 is a schematic view of the first wiper arm to which the wiper blade assembly of the present invention is attached.

Figure 6 is a schematic view of the wiper blade assembly of the present invention attached to the first wiper arm.

Figure 7 is a schematic view showing the bottom surface of the wiper blade assembly of the present invention connected to the first wiper arm.

Figure 8 is a schematic view showing the bottom surface of the wiper blade assembly of the present invention connected to the second wiper arm.

In order to understand the technical characteristics, content and advantages of the creation and the effects that can be achieved by the examiner, the author will use the drawings in detail and explain the following in the form of the examples, and the drawings used therein The subject matter is only for the purpose of illustration and supplementary instructions. It is not necessarily the true proportion and precise configuration after the implementation of the original creation. Therefore, the proportions and configuration relationships of the attached drawings should not be interpreted or limited in the actual implementation scope. First described.

Hereinafter, the embodiment of the wiper blade adapter and the wiper blade assembly thereof according to the present invention will be described with reference to the related drawings. For ease of understanding, the same components in the following embodiments are denoted by the same reference numerals. .

Please refer to Figures 1 to 8. The wiper blade adapter 1 of the present invention is for detachably coupling between the wiper blade 2 having the pivot 211 and the first wiper arm 3 or the second wiper arm 4. Specifically, the first wiper arm 3 and the second wiper arm 4 may be the wiper arms on the same mobile vehicle. For example, the first wiper arm 3 is a scraper adjacent to the driver's seat. a water arm, and the second wiper arm 4 is adjacent to the passenger seat The wiper arm; or alternatively, the aforementioned opposite arrangement. Wherein, the first wiper arm 3 and the second wiper arm 4 are provided with a connection space at the place for accommodating the wiper blade adapter 1 , and the connection space has a front opening 31 located in the longitudinal direction and a lateral direction The lower opening 32 is lower, and the opposite sides of the lower opening 32 are respectively provided with the retaining edges 33, and the inner side of one of the retaining edges 33 is provided with a first protrusion 34 and a second protrusion 41 protruding in the downward opening 32. The first protrusion 34 of the first wiper arm 3 and the second protrusion 41 of the second wiper arm 4 are provided with retaining edges 33 on different sides thereof. In brief, when the first wiper arm 3 and the second wiper arm 4 are viewed from the same angle of view, the first protrusion 34 and the second protrusion 41 are respectively disposed on different side walls, such as the first wiper arm. The first protrusion 34 of the third wiper arm 4 is disposed on the right side of the connection space, and the second protrusion 41 of the second wiper arm 4 is disposed on the left side of the empty space. The structure of the first portion of the first wiper arm 3 and the second wiper arm 4 is only exemplified by the first wiper arm 3, that is, the difference between the first wiper arm 3 and the second wiper arm 4 lies in The arrangement of the first protrusion 34 and the second protrusion 41 is substantially the same. That is to say, the present invention provides a wiper blade adapter 1 which can be simultaneously applied to different structural shapes and is provided with a second wiper arm adjacent to the driver's seat and adjacent to the passenger's seat on a mobile vehicle. In the following embodiments, the first wiper arm 3 is mainly provided as an exemplary embodiment (for the connection between the wiper blade 2 and the first wiper arm 3 and the second wiper arm 4, please refer to the respective 7, 8 shows), but not as a limitation.

The adapter 1 for a wiper blade according to a specific embodiment includes an adapter body 11 and a first coupling member 12. In another preferred embodiment, the wiper blade adapter 1 includes an adapter body 11, a first coupling member 12, and a second coupling member 13.

Please refer to Figures 1 and 2. The adapter body 11 includes a top portion 111 and two side portions 112 extending downwardly from laterally opposite sides of the top portion 111 to form a receiving space 113 having a downward opening between the two side portions 112. At this time, when the adapter main body 11 is inserted into the first wiper arm 3 via the front opening 31, the first wiper arm 3 covers the outer surface of the portion of the top portion 111 and the two side portions 112. Of course, when switching When the main body 11 is inserted into the second wiper arm 4 via the front opening, the second wiper arm 4 is also an outer surface of a portion covering the top portion 111 and the two side portions 112. The first protrusion 34 and the second protrusion 41 of the first wiper arm 3 and the second wiper arm 4 are protruded in opposite directions of the two side portions 112, so when the first wiper arm 3 is partially wrapped When the adapter body 11 is covered, the first protrusion 34 is located below one side portion 112a, and when the second wiper arm 4 partially covers the adapter body 11, the second protrusion 41 is located on the other side thereof Below portion 112b (as shown in Figures 7 and 8).

The first coupling member 12 is disposed in the receiving space 113 from the middle of the top portion. The first coupling member 12 extends substantially downwardly from the bottom of the receiving space 113 and is disposed beyond the two side portions 112, and is first. The coupling member 12 has a shaft cavity 121 in which a first notch 1211 is disposed. Therefore, the pivot 211 of the wiper blade 2 can be loaded into the shaft cavity 121 through the first notch 1211. In addition, a limiting portion 114 is respectively disposed between the two side portions 112 and the first coupling member 12 , that is, the two side portions 112 respectively protrude from the first coupling member 12 to form the limiting portion 114 . With the above configuration, when the adapter main body 11 is attached to the wiper blade 2, it can be firmly fixed in a plurality of directions.

The installation of the wiper blade adapter 1 with the wiper blade 2 and the wiper arm will be further described below.

Please refer to Figures 3 and 4 together. Further, the wiper blade 2 includes a connector 21 that is integrally bent upwardly from the two opposite lateral sides to extend out of the two fixed walls 212, and the pivot 211 is fixed to the two fixed walls 212 through the fixed wall 212. between. In addition, the circular-diameter dimension of the axial cavity 121 of the first coupling member 12 corresponds to the circular-diameter dimension of the pivot shaft 211. For example, the circular-diameter dimension of the axial cavity 121 is equal to or slightly larger than the circular-diameter dimension of the pivot 211, so the axial cavity 121 is just A pivot 211 can be received therein to pivot the pivot 211 in the axial cavity 121. The width of the first notch 1211 is smaller than the circular diameter of the shaft cavity 121. Preferably, the first notch 1211 may be a notch of a V-shape. The adapter body 11 is divided on both sides of the first coupling member 12 in the longitudinal direction. Do not set a bit slot 115. Therefore, when the wiper blade adapter 1 is attached to the wiper blade 2, the pivot 211 generates a pressing force at the first notch 1211, so that the first notch 1211 elastically deforms to increase the width of the first notch 1211, Thereby, the pivot 211 can smoothly enter the shaft cavity 121. After the pressing force is removed, the first notch 1211 is restored to the original state, so that the pivot 211 can be appropriately and stably fixed in the shaft cavity 121, and the displacement of the adapter body 11 in the up-and-down direction and the longitudinal direction is restricted. That is as shown in Figure 5. In addition, when the wiper blade adapter 1 is attached to the wiper blade 2, the two fixing walls 212 of the connector 21 are respectively inserted between the side portions 112 and the first coupling member 12 to be separated by the two sides. 112 and the first coupling member 12 limit the relative displacement of the connector 21 and the wiper blade adapter 1 in the lateral direction.

It should be noted that the two side portions 112 may be provided with a notch to prevent the fixed structure of the pivot 211 fixed to the fixed wall 212 and the two side portions 112 after the wiper blade adapter 1 is mounted to the wiper blade 2 . The problem of interference. Preferably, the two side portions 112 are respectively provided with a U-shaped notch 1121 corresponding to the first notch 1211 and the shaft cavity 121. In addition, at least two spaced apart reinforcing ribs 1141 are further disposed in each of the limiting portions 114. The reinforcing ribs 1141 extend in the up and down direction and are integrally connected to the side portions 112. By the arrangement of the reinforcing ribs 1141, the structural strength of the side portions 112 can be increased to strengthen the top end of the side portions 112 against the fixed walls 212, and does not need to be manufactured with expensive materials and processes, and can be used at a lower cost. The plastic is formed in one piece. The distance between the end of the reinforcing rib 1141 not connected to the side portion 112 and the first coupling member 12 may correspond to the thickness of the fixed wall 212. For example, the distance between one end of the reinforcing rib 1141 and the first coupling member 12 may be equal to or slightly larger than the thickness of the fixing wall 212, so that the wiper blade adapter 1 is prevented from being excessively installed after being attached to the wiper blade 2 The problem of shaking is to further increase the stability of the adapter 1 for the wiper blade. Incidentally, the wiper blade 2 also includes elements such as a wiper strip, a flow guide, a spring leaf, etc., which are well known to those of ordinary skill in the art and will not be further described herein.

Please refer to Figures 1, 2, 5, 6, 7, and 8. The second coupling member 13 is substantially a snap structure disposed on the top portion 111 of the adapter body 11. In detail, the top portion 111 may have a second notch 1111 adjacent to one end of the adapter body 11 and a second coupling member 13 disposed on the second notch 1111. The second coupling member 13 includes a resilient arm 131 and a latching portion 132. The resilient arm 131 extends from the edge of the second notch 1111 of the adapter body 11 toward the middle of the notch, that is, in the second notch 1111. One end of the adapter body 11 extends toward the other end, and the latching portion 132 is disposed at the free end of the elastic arm 131. A fastening portion 35 is provided in the connection space of the first wiper arm 3 (the second wiper arm 4 also has a fastening portion). Therefore, when the adapter body 11 is inserted into the connection space of the first wiper arm 3, the first wiper arm 3 exerts a pressing force on the buckle portion 132, so that the elastic arm 131 is deformed by the elastic arm 131. The buckle portion 132 is elastically deformed to be engaged with the engaging portion 35 of the wiper arm 3 corresponding to the position of the hook portion 132. The buckle portion 132 is fastened to the fastening portion 35 (as shown in FIG. 5), so that the displacement between the wiper blade adapter 1 and the first wiper arm 3 in the longitudinal direction can be stably restricted. .

In addition, since the first wiper arm 3 has a mouth-shaped shape (similar to a U-shape) having openings (front opening and lower opening), the partial covering is installed outside the adapter for the wiper blade 1 The surface is provided with a retaining edge 33 inwardly of the opening, and the first projection 34 is further inwardly protruded from the retaining edge 33. Therefore, when the adapter body 11 is inserted and positioned in the connection space of the first wiper arm 3 (or the second wiper arm 4), the retaining edge 33 will be positioned below the side portion 112, and the first protrusion (or The second protrusion 41) is located below the notch 1121. The displacement between the wiper blade adapter 1 and the first wiper arm 3 in the lateral direction and the up-and-down direction is also restricted, so that the adapter body 11 can be mounted to the first wiper arm 3 Stable fixation in multiple directions. For the relationship between the adapter body 11 and the second wiper arm 4, as before, it will not be described again.

It is particularly worthwhile to note that the lateral distance between the outer surface of each side portion 112 and the side wall adjacent to the first coupling member 12 is greater than the first protrusion 34 or the second wiper arm 4 of the first wiper arm 3 . The distance from the lateral inner edge of the second projection 41 to the inner side of the same side of the connection space. In addition, the limiting portion 114 protruding from the two side portions 112 to the first coupling member 12 has a lateral distance to the first coupling member 12 of less than or equal to 5.3 mm, which is not less than the first scraping arm 3. The lateral inner edge of one of the projections 34 is connected to the inner side of the same side of the space. Therefore, the first protrusion 34 can be appropriately positioned under the notch 1121 of the one side portion 112a to further prevent the pivot 211 from being detached from the first notch 1211. Of course, the second wiper arm 4 and the adapter body 11 are similar to the foregoing after installation, except that the second protrusion 41 is located below the notch 1121 of the other side portion 112b. Since the adapter body 11 is disposed substantially in a symmetrical manner in the lateral direction, the first wiper arm 3 and the second wiper arm 4 do not have the problem of pairing at the time of installation, but directly It is suitable for the first wiper arm 3 and the second wiper arm 4 on the same vehicle, thereby providing the user with convenience in installation. Moreover, the two-in-one application method enables the wiper blade adapter 1 to be manufactured, and can effectively reduce the number of different types of wiper adapter 1 molds to be combined with the wiper arm. Costs such as design, production or warehousing can effectively reduce the cost of scraping manufacturers.

It should be noted that those skilled in the art can understand that in the present specification, "top", "bottom", "upper", "lower", "longitudinal", and "lateral" are used for convenience of description. The term, which merely denotes a relative positional relationship, does not mean an absolute spatial position. For example, the orientation terms "top" and "upper" refer to the opposite directions of "bottom" and "lower", while the orientation term "longitudinal" refers to the length direction of the object, and "lateral" refers to the "longitudinal" phase. Vertical and usually perpendicular to the up and down direction.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of this creation shall be included in the scope of the appended patent application.

1‧‧‧wiping plate adapter

11‧‧‧Adapter body

111‧‧‧ top

112‧‧‧ side

1121‧‧ ‧ gap

113‧‧‧ accommodating space

114‧‧‧Limited

1141‧‧‧Strengthened ribs

115‧‧‧Let the slot

12‧‧‧First coupling

121‧‧‧Axis cavity

1211‧‧‧ first gap

Claims (10)

An adapter for a wiper blade for detachably coupling between a first wiper arm or a second wiper arm and a wiper blade having a pivot, the first wiper arm Providing a connection space with the second wiper arm, the connection space has a front opening in the longitudinal direction and a lower opening in the lateral direction, and the opposite sides of the lower opening of the connection space are respectively provided with a holding edge, the two holdings The inner side of one of the edges is provided with a protrusion protruding into the lower opening, and the protrusion of the first wiper arm and the second wiper arm is disposed on a different side of the retaining edge thereof, which comprises: a transfer The main body includes a top portion and two side portions extending downwardly from opposite lateral sides of the top portion, and a receiving space having a downward opening is formed between the two side portions, and the adapter body can pass through The front opening is inserted into the connection space of the first wiper arm or the second wiper arm, and when the adapter body is inserted into the connection space, the retaining edge is blocked at the lower edge of the two side portions; a coupling member protruding from the middle portion of the top portion to the receiving space And extending downwardly from the two side portions, and the first coupling member has a shaft cavity provided with a first notch, the pivot shaft can be loaded into the shaft cavity through the first notch, and the outer surface of each side portion a lateral distance between the side walls adjacent to the first coupling member is greater than a lateral inner edge of the first wiper arm and the second wiper arm to the inner side of the same side of the connection space thereof distance. The adapter for a wiper blade according to claim 1, further comprising a second coupling member, when the adapter body is inserted into the connection space of the first wiper arm or the second wiper arm The second coupling member limits displacement of the adapter body in the longitudinal direction of the first wiper arm or the second wiper arm. The adapter for a wiper blade according to claim 2, wherein the top portion is adjacent to One end of the adapter body has a second notch, and the second coupling member is disposed on the second notch, wherein the second coupling member comprises a resilient arm and a buckle portion, and the elastic arm is rotated by the rotation An edge of the second notch extends toward the middle of the notch, and the fastening portion is disposed at a free end of the elastic arm, and the connection space of the first wiper arm or the second wiper arm is provided with a fastening When the adapter body is inserted into the connection space of the first wiper arm or the second wiper arm, the buckle portion is fastened to the first wiper arm by elastic deformation of the elastic arm Or a fastening portion of the second wiper arm. The adapter for a wiper blade according to claim 1, wherein the two side portions respectively protrude from the first coupling member with a limiting portion, and the lateral distance of the limiting portion to the first coupling member Less than or equal to 5.3 mm, and not less than the distance from the lateral inner edge of the first wiper arm or the second wiper arm to the inner side of the same side of its connection space. The adapter for a wiper blade according to claim 1, wherein a diameter of the shaft cavity corresponds to a circular diameter of the pivot, and a width of the first notch is smaller than a circle of the axial cavity. The diameter of the first coupling member elastically deforms the pivot shaft in the shaft cavity and limits the displacement of the adapter body in the up and down direction. The adapter for a wiper blade according to claim 5, wherein the adapter body is provided with a retaining groove on each side of the first coupling member in the longitudinal direction. The adapter for a wiper blade according to claim 1, wherein a position of the two side portions opposite to the axial direction of the shaft cavity is respectively provided with a notch, and when the adapter body is inserted and positioned in the first When a wiper arm or a connection space of the second wiper arm is located, the protrusion is located below the notch. The adapter for a wiper blade according to claim 4, wherein each of the limiting portions includes at least two spaced apart reinforcing ribs extending in an up-and-down direction, the reinforcing ribs being integrally connected to the side portions. A wiper blade assembly comprising: a wiper blade; and an adapter for a wiper blade according to any one of claims 1 to 8, which is detachably coupled to the wiper blade The water piece is between a first wiper arm or a second wiper arm. The wiper blade assembly of claim 9, wherein the wiper blade comprises a connector that is integrally bent upwardly from two opposite lateral sides to extend out of the two fixed walls, and the pivot extends through the Fixing the wall and fixing to the two fixed walls, when the wiper blade adapter is mounted to the wiper blade, the two fixed walls of the connector are respectively inserted between the side portions and the first coupling member Each of the side portions limits relative displacement of the connector and the wiper blade adapter in a lateral direction.