Covering cap buffering device, covering cap assembly and vehicle

Abstract

The invention discloses a covering cap buffering device, a covering cap assembly and a vehicle, and relates to the technical field of automobile covering caps. The first end of the hinge arm is rotationally connected into the covering cap base, and the second end of the hinge arm is connected with the covering cap upper cover; the clamping piece is fixed at the first end of the hinge arm; and the buffer piece is connected in the clamping piece in a sleeved mode and penetrates through the hinge arm, and the two ends of the buffer piece extend out of the two side faces of the hinge arm respectively. The buffer piece is installed on the hinge arm through the clamping piece, the two ends of the buffer piece extend out of the two side faces of the hinge arm respectively, when the covering cap upper cover is opened, the buffer piece rotates along with the hinge arm, when the covering cap upper cover is opened or closed to the maximum position, the end of the buffer piece abuts against the inner surface of the covering cap base, and the supporting effect is achieved; and direct collision between the hinge arm and the covering cap base is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of automobile flaps, and in particular to a flap buffer device, a flap assembly and a vehicle. Background Art

[0002] At present, the buffer structure of the car fuel port or charging port mostly plays a buffering role between the cover and the base. However, when the cover is opened or closed, the hinge arm of the cover and the base of the cover are prone to collision, producing abnormal noise, affecting the user experience.

[0003] The Chinese patent document with the publication number CN205951706U discloses a fuel filler cap buffer optimization structure, including a fuel filler cap, a fuel filler box adapted to the fuel filler cap, a clamping member arranged on the inner side of the fuel filler cap, a buffer pad fixedly mounted on the clamping member, and a cable locking switch. One side of the fuel filler cap is pivotally mounted on the fuel filler box, a buckle portion is protruding downward on the lower surface of the other side of the fuel filler cap, a platform is arranged in the fuel filler box corresponding to the buffer pad, a clamping column connected to the cable is movably arranged at the front end of the cable locking switch, a clamping slot is provided through the middle part of the buckle portion corresponding to the clamping column, and the clamping column of the cable locking switch is buckled in the clamping slot to fix the fuel filler cap on the fuel filler box. The fuel filler cap of the utility model is provided with a clamping member on the inner side, and the buffer pad is fixedly mounted on the clamping member. When the fuel filler cap is closed on the fuel filler box, the buffer pad abuts against the platform to play a role of buffering protection and limiting the fuel filler cap, and is not easy to fall off. This patent only provides a buffering protection for the fuel filler cap and only works during the process of closing the cap.

[0004] The Chinese patent document with publication number CN203237299U discloses a vehicle fuel filler cap assembly, including: a fuel filler cap plate, the edge of which is provided with a boss formed by an overall inward bulge for installing a buffer block; a fuel filler hinge arm, fixedly connected to the fuel filler cap plate; a fuel filler hinge bracket, pivotally connected to the fuel filler hinge arm, for installation on the vehicle body. Using the boss as the buffer block installation point not only strengthens the support strength but also improves the matching accuracy of the buffer block. The utility model also provides a tongue extending inward on the fuel filler cap plate for locking the fuel filler cap plate, the tongue plate is provided with a locking opening for the cable head to pass through for locking, and the two side edges of the tongue plate have a flange structure; the flange structure increases the rigidity of the tongue plate, making it less likely to deform. The patent also sets the buffer block on the fuel filler cap plate, and there is no structure for buffering the hinge arm. Summary of the invention

[0005] The object of the present invention is to provide a flap buffer device, a flap assembly and a vehicle, which solves the defect in the prior art that when the flap is opened or closed, there is no buffer structure between the flap hinge arm and the flap base, and collision is easy to occur between the flap hinge arm and the flap base, resulting in abnormal noise.

[0006] The present invention provides the following scheme:

[0007] In a first aspect, the present invention discloses a mouth cover buffer structure, comprising:

[0008] Mouth cover base;

[0009] A hinge arm, wherein a first end of the hinge arm is rotatably connected to the mouth cover base, and a second end of the hinge arm is connected to the mouth cover upper cover;

[0010] A clamping member, wherein the clamping member is fixed to the first end of the hinge arm;

[0011] A buffer is sleeved inside the clamp and passes through the hinge arm, and two ends of the buffer extend out of two side surfaces of the hinge arm respectively.

[0012] Preferably, two ends of the buffer are respectively provided with a buffer hole or a neck.

[0013] Preferably, a first through hole is formed at the first end of the hinge arm, and the clamping member is clamped in the first through hole.

[0014] Preferably, the edge of the first through hole of the hinge arm is configured as a slot, and both ends of the clamping member are provided with clamping columns for clamping with the slot.

[0015] Preferably, the clamping member is provided with a second through hole, and after the buffer member is sleeved in the second through hole, it passes through the first through hole and extends out of two side surfaces of the hinge arm.

[0016] Preferably, a plurality of ridges are disposed on the outer surface of the buffer component, and a plurality of grooves engaged with the ridges are disposed on the inner wall of the second through hole of the clamping component.

[0017] Preferably, the buffer is made of plastic material.

[0018] Preferably, the buffer is made of EPDM.

[0019] In a second aspect, the present invention describes a mouth cover assembly, including the mouth cover buffer device.

[0020] In a third aspect, the present invention describes a vehicle comprising at least one flap assembly as described above.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. The mouth cover buffer device provided by the present invention has a buffer component installed on the hinge arm through a clamping component, and the two ends of the buffer component extend out of the two side surfaces of the hinge arm respectively. When the mouth cover is opened, the buffer component rotates with the hinge arm. When it is opened or closed to the maximum position, the end of the buffer component abuts against the inner surface of the mouth cover base to play a supporting role and avoid direct collision between the hinge arm and the mouth cover base.

[0023] 2. The mouth cover buffer device provided by the present invention has one end of the buffer member playing a buffering role when the mouth cover is opened, and the other end of the buffer member playing a buffering role when the mouth cover is closed, thus playing a bidirectional buffering role. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of the mouth cover buffer device according to an embodiment of the present invention;

[0026] Figure 2 A side view of the mouth cover buffer structure according to an embodiment of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the hinge arm of the mouth cover buffer structure according to an embodiment of the present invention;

[0028] Figure 4 It is a structural schematic diagram of a retaining member of a mouth cover buffer structure according to an embodiment of the present invention;

[0029] Figure 5 It is a structural schematic diagram of a buffer member of a mouth cover buffer structure according to an embodiment of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the mouth cover buffer structure after the clamping member and the buffer member are assembled according to the embodiment of the present invention;

[0031] Figure 7 It is a structural schematic diagram of the mouth cover assembly described in an embodiment of the present invention.

[0032] Among them: 1- lid base;

[0033] 2-hinge arm; 21-first through hole; 22-slot; 23-first connecting portion; 24-second connecting portion; 25-third connecting portion; 26-fourth connecting portion;

[0034] 3-holder; 31-pin; 32-second through hole; 33-groove;

[0035] 4-buffer; 41-buffer hole; 42-neck; 43-convex edge; 44-convex structure; 45-groove;

[0036] 5-Lid the lid;

[0037] 6- Hinge axis. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0039] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0040] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0041] It should be understood that although the terms first, second, third, etc. may be used to describe in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, without departing from the scope of the embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0042] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0043] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0044] It should be particularly noted that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.

[0045] Example 1

[0046] See also Figure 1-Figure 6 As shown, a mouth cover buffer device provided in an embodiment of the present application includes a hinge arm 2, a first end of the hinge arm 2 is rotatably connected in a mouth cover base 1 adapted thereto, and a second end is connected to a mouth cover upper cover 5; a clamping member 3, the clamping member 3 is fixed to the first end of the hinge arm 2; a buffer member 4, the buffer member 4 is sleeved on the clamping member 3 and then passes through the hinge arm 1, and both ends of the buffer member 4 extend out of two side surfaces of the hinge arm 1 respectively.

[0047] The opening cover can be a fuel filler port, a charging port, or other parts of the vehicle where an opening is required. The opening cover base 1 is installed on the vehicle body, and the hinge arm 2 is adapted to the opening cover base 1. The hinge arm 2 rotates at the first end to drive the opening cover connected to the second end to open or close.

[0048] The buffer member 4 is installed at the middle part of the first end of the hinge arm 2 through the clamping member 3, which reduces the difficulty of assembly. In the present embodiment, in order to facilitate the installation of the buffer 4 into the clamping member 3, the buffer 4 is set to a conical structure with one end larger than the other end, and the middle part is cylindrical, the large head end extends out of the first side surface of the first end of the hinge arm 2, and the small head end extends out of the second side surface of the first end of the hinge arm 2. When the upper cover 5 of the mouth cover is opened, the buffer 4 rotates with the hinge arm 2. When it is opened to the maximum position, the first side surface of the first end of the hinge arm 2 rotates to a position where it may collide with the inner surface of the mouth cover base 2. At this time, the large head end of the buffer 4 will abut against the inner surface of the mouth cover base 2 to play a supporting role and avoid direct collision between the hinge arm 1 and the mouth cover base 2; when the upper cover 5 of the mouth cover is closed, the buffer 4 rotates in the other direction with the hinge arm 2. When it is completely closed, the second side surface of the first end of the hinge arm 2 rotates to a position where it may collide with the inner surface of the mouth cover base 2. At this time, the small head end of the buffer 4 will abut against the inner surface of the mouth cover base 2 to play a supporting role and avoid direct collision between the hinge arm 1 and the mouth cover base 2.

[0049] By adopting the above scheme, the buffer member 4 plays a bidirectional buffering role when the mouth cover 5 is opened and closed, which solves the defect of no buffer structure between the hinge arm and the mouth cover base in the prior art, and the hinge arm and the mouth cover base are prone to collision and abnormal noise.

[0050] Furthermore, when the two ends of the buffer 4 extend more out of the side of the hinge arm 2, or when the deformation of the buffer 4 is insufficient, it may hinder the opening or closing of the mouth cover 5. In this embodiment, the large end of the buffer 4 is provided with a protruding structure 44 and a groove 45 in sequence from the end, and the first end of the clamp 3 is placed in the groove 45 to provide support for the deformation of the large end of the buffer 4. In addition, the first end of the clamp 3 is spaced a certain distance from the end face of the protruding structure 44, and the large end of the buffer 4 is provided with a buffer hole 41, which is far away from the protruding structure 44. The buffer hole 41 is set to an elliptical shape, so that when the large end of the buffer 4 abuts against the inner surface of the hinge arm 1, the buffer 4 is more likely to deform, avoiding affecting the opening and closing degree of the mouth cover, and the distance between the clamp 3 and the protruding structure 44 provides space for the deformation of the buffer 4.

[0051] The small end of the buffer member 4 is configured as a neck 42 . The neck 42 makes it easier for the buffer member 4 to deform when the small end of the buffer member 4 abuts against the inner surface of the hinge arm 1 .

[0052] Furthermore, a first through hole 21 is formed at the first end of the hinge arm 2 , and the clamping member 3 is clamped in the first through hole 21 .

[0053] In this embodiment, the first through hole 21 is set to be square at one end and semicircular at the other end, mainly to match the internal structure shape of the first end of the hinge arm 2 to a greater extent, and the shape of the clamping member 3 matches the shape of the first through hole 21. The first through hole 21 is set in the middle part of the first end of the hinge arm 2, so that the buffer 4 after installation is located in the middle part of the first end of the hinge arm 1. The second end of the clamping member 3 enters the first through hole 21 from the first side of the hinge arm 2 and is sleeved in the first through hole 21. The clamping member 3 is fixed to the first end of the hinge arm 2 through the first through hole 21, providing a foundation for the installation of the buffer 4 on the hinge arm 2. The first end of the clamping member 3 is exposed outside the first side of the hinge arm 2 and is installed in the groove 45 of the large end of the buffer, providing support for the pressure deformation of the large end of the buffer 4. At the same time, the first through hole 21 provides space for the small end of the buffer 4 to extend out of the side of the hinge arm 2.

[0054] Furthermore, the edge of the first through hole 21 of the hinge arm 2 is set as a slot 22, and the two ends of the clamping member 3 are provided with clamping columns 31 for clamping with the slot 22. The slot 22 is T-shaped, and the clamping column 31 is matched with the shape thereof. The clamping member 3 is fixed to the hinge arm 2 through the slot 22 and the clamping column 31.

[0055] Furthermore, the clamping member 3 is provided with a second through hole 32 , and after the buffer member 4 is sleeved in the second through hole 32 , it passes through the first through hole 21 and extends out of two side surfaces of the hinge arm 2 .

[0056] The buffer 4 is installed on the holder 3 through the second through hole 32. Specifically, the small end of the buffer 4 enters the second through hole 32 from the first end of the holder 3, passes through the second through hole 32 and the first through hole 21 in sequence, and then extends out of the second side surface of the hinge arm 2.

[0057] Furthermore, a plurality of ridges 43 are provided on the outer surface of the cylinder in the middle of the buffer 4, and the ridges 43 are arranged circumferentially around the cylinder, and a plurality of grooves 33 engaged with the ridges are provided on the inner wall of the second through hole 32 of the clamp 3. The buffer 4 is fixed to the clamp 3 by the ridges 43 and the grooves 33 engaged together.

[0058] Furthermore, the material of the buffer 4 is a plastic material. It provides a good deformation basis for the buffer. It is preferably EPDM. EPDM is made of high-quality EPDM rubber and has excellent elastic properties. It also has excellent wear resistance and pressure resistance: the wear resistance of EPDM is less than 2.5%, and it will not fail to restore elasticity due to multiple pressures.

[0059] Example 2

[0060] See also Figure 1-Figure 7 As shown, this embodiment provides a mouth cover assembly, including the above-mentioned mouth cover buffer device, and the hinge arm 2 is connected to the mouth cover base 2 through the hinge shaft 6.

[0061] In this embodiment, the internal structure of the first end of the hinge arm 2 includes a first connecting part 23, a second connecting part 24, a third connecting part 25 and a fourth connecting part 26 which are arranged in four positions and connected together. The four connecting parts are all provided with weight-reducing holes, and reinforcing ribs are connected inside the weight-reducing holes. The clamping part 3 and the buffer part 4 are arranged at the middle connecting parts of the four connecting parts.

[0062] The buffer member 4 is installed at the middle part of the first end of the hinge arm 2 through the clamping member 3, which reduces the difficulty of assembly. In the present embodiment, in order to facilitate the installation of the buffer 4 into the clamping member 3, the buffer 4 is set to a conical structure with one end larger than the other end, and the middle part is cylindrical, the large head end extends out of the first side surface of the first end of the hinge arm 2, and the small head end extends out of the second side surface of the first end of the hinge arm 2. When the upper cover 5 of the mouth cover is opened, the buffer 4 rotates with the hinge arm 2. When it is opened to the maximum position, the first side surface of the first end of the hinge arm 2 rotates to a position where it may collide with the inner surface of the mouth cover base 2. At this time, the large head end of the buffer 4 will abut against the inner surface of the mouth cover base 2 to play a supporting role and avoid direct collision between the hinge arm 1 and the mouth cover base 2; when the upper cover 5 of the mouth cover is closed, the buffer 4 rotates in the other direction with the hinge arm 2. When it is completely closed, the second side surface of the first end of the hinge arm 2 rotates to a position where it may collide with the inner surface of the mouth cover base 2. At this time, the small head end of the buffer 4 will abut against the inner surface of the mouth cover base 2 to play a supporting role and avoid direct collision between the hinge arm 1 and the mouth cover base 2.

[0063] By adopting the above scheme, the buffer member 4 plays a bidirectional buffering role when the mouth cover 5 is opened and closed, which solves the defect of no buffer structure between the hinge arm and the mouth cover base in the prior art, and the hinge arm and the mouth cover base are prone to collision and abnormal noise.

[0064] Furthermore, when the two ends of the buffer 4 extend more out of the side of the hinge arm 2, or when the deformation of the buffer 4 is insufficient, it may hinder the opening or closing of the mouth cover 5. In this embodiment, the large end of the buffer 4 is provided with a protruding structure 44 and a groove 45 in sequence from the end, and the first end of the clamp 3 is placed in the groove 45 to provide support for the deformation of the large end of the buffer 4. In addition, the first end of the clamp 3 is spaced a certain distance from the end face of the protruding structure 44, and the large end of the buffer 4 is provided with a buffer hole 41, which is far away from the protruding structure 44. The buffer hole 41 is set to an elliptical shape, so that when the large end of the buffer 4 abuts against the inner surface of the hinge arm 1, the buffer 4 is more likely to deform, avoiding affecting the opening and closing degree of the mouth cover, and the distance between the clamp 3 and the protruding structure 44 provides space for the deformation of the buffer 4.

[0065] The small end of the buffer member 4 is configured as a neck 42 . The neck 42 makes it easier for the buffer member 4 to deform when the small end of the buffer member 4 abuts against the inner surface of the hinge arm 1 .

[0066] Furthermore, a first through hole 21 is formed at the first end of the hinge arm 2 , and the clamping member 3 is clamped in the first through hole 21 .

[0067] In this embodiment, the first through hole 21 is set to be square at one end and semicircular at the other end, mainly to match the internal structure shape of the first end of the hinge arm 2 to a greater extent, and the shape of the clamping member 3 matches the shape of the first through hole 21. The first through hole 21 is set in the middle part of the first end of the hinge arm 2, so that the buffer 4 after installation is located in the middle part of the first end of the hinge arm 1. The second end of the clamping member 3 enters the first through hole 21 from the first side of the hinge arm 2 and is sleeved in the first through hole 21. The clamping member 3 is fixed to the first end of the hinge arm 2 through the first through hole 21, providing a foundation for the installation of the buffer 4 on the hinge arm 2. The first end of the clamping member 3 is exposed outside the first side of the hinge arm 2 and is installed in the groove 45 of the large end of the buffer, providing support for the pressure deformation of the large end of the buffer 4. At the same time, the first through hole 21 provides space for the small end of the buffer 4 to extend out of the side of the hinge arm 2.

[0068] Furthermore, the edge of the first through hole 21 of the hinge arm 2 is set as a slot 22, and the two ends of the clamping member 3 are provided with clamping columns 31 for clamping with the slot 22. The slot 22 is T-shaped, and the clamping column 31 is matched with the shape thereof. The clamping member 3 is fixed to the hinge arm 2 through the slot 22 and the clamping column 31.

[0069] Furthermore, the clamping member 3 is provided with a second through hole 32 , and after the buffer member 4 is sleeved in the second through hole 32 , it passes through the first through hole 21 and extends out of two side surfaces of the hinge arm 2 .

[0070] The buffer 4 is installed on the holder 3 through the second through hole 32. Specifically, the small end of the buffer 4 enters the second through hole 32 from the first end of the holder 3, passes through the second through hole 32 and the first through hole 21 in sequence, and then extends out of the second side surface of the hinge arm 2.

[0071] Furthermore, a plurality of ridges 43 are provided on the outer surface of the cylinder in the middle of the buffer 4, and the ridges 43 are arranged circumferentially around the cylinder, and a plurality of grooves 33 engaged with the ridges are provided on the inner wall of the second through hole 32 of the clamp 3. The buffer 4 is fixed to the clamp 3 by the ridges 43 and the grooves 33 engaged together.

[0072] Furthermore, the material of the buffer 4 is plastic material, which provides a good deformation foundation for the buffer, and is preferably EPDM.

[0073] Example 3

[0074] This embodiment provides a vehicle, comprising at least one of the above-mentioned cover assemblies, which may be a fuel filler cap or a charging port cap, or other parts of the vehicle where an opening is required to be provided, or all the covers on the vehicle may be the above-mentioned cover assemblies.

[0075] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0076] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A mouth cover buffer device, characterized in that: include: A hinge arm (2), wherein a first end of the hinge arm (2) is rotatably connected to a mouth cover base (1) adapted to the hinge arm (2), and a second end is connected to a mouth cover upper cover (5); A clamping member (3), wherein the clamping member (3) is fixed to the first end of the hinge arm (2); A buffer component (4) is sleeved on the clamping component (3) and then passes through the hinge arm (1), with two ends of the buffer component (4) extending out of two side surfaces of the hinge arm (1) respectively.

2. The mouth cover buffer device according to claim 1, characterized in that: The two ends of the buffer member (4) are respectively provided with a buffer hole (41) or a neck (42).

3. The mouth cover buffer device according to claim 1, characterized in that: A first through hole (21) is formed at the first end of the hinge arm (2), and the clamping member (3) is clamped in the first through hole (21).

4. The mouth cover buffer device according to claim 3, characterized in that: The edge of the first through hole (21) of the hinge arm (2) is arranged as a clamping slot (22), and clamping columns (31) for clamping with the clamping slot (22) are arranged at both ends of the clamping member (3).

5. The mouth cover buffer device according to claim 4, characterized in that: The clamping member (3) is provided with a second through hole (32), and the buffer member (4) is sleeved in the second through hole (32), passes through the first through hole (21) and extends out of two side surfaces of the hinge arm (2).

6. The mouth cover buffer device according to claim 5, characterized in that: The outer surface of the middle part of the buffer (4) is provided with a plurality of ridges (43), and the inner wall of the second through hole (32) of the clamping member (3) is provided with a plurality of grooves (33) clamped with the ridges (43).

7. The mouth cover buffer device according to claim 1, characterized in that: The buffer component (4) is made of plastic material.

8. The mouth cover buffer device according to claim 7, characterized in that: The material of the buffer component (4) is EPDM.

9. A cover assembly, characterized in that: The invention comprises the mouth cover buffer device according to any one of claims 1 to 8.

10. A vehicle, characterized in that: Comprising at least one cover assembly according to claim 9.

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