Cover assembly

Abstract

Cover assembly provided. [Solution] The cover assembly of the present invention comprises a housing, a cover, and a cover pusher. The housing has a housing opening and defines a first raceway groove with height and depth directions. The cover is connected to the housing through the first raceway groove and is configured to open and close the housing opening by moving between a closed position and an open position along the height and depth directions guided by the first raceway groove. The cover pusher comprises an operating mechanism and is operably connected to the cover through the operating mechanism and pushes the cover to move between a closed position and an open position in accordance with the drive of a drive device. The first raceway groove includes a first limiting groove portion configured to prevent the cover from moving in the height direction of the housing when the cover is in the closed position due to external force. The operating mechanism is configured to prevent the cover from moving in the depth direction of the housing when the cover is in the closed position due to external force.

Description

Technical Field

[0001] [Cross - reference to Related Applications] This application claims priority to Chinese Patent Application No. 202411505443.6, entitled "Cover Assembly", filed on October 25, 2024, which is hereby incorporated by reference in its entirety and made a part of this application (this specification).

[0002] This application relates to a cover assembly, particularly a cover assembly for use in a vehicle.

Background Art

[0003] A cover assembly for a vehicle is used, for example, for a vehicle's fuel filler or charging port. The cover of the cover assembly closes or opens the vehicle's opening as required. In some existing cover assemblies, the cover of the cover assembly rotates between a closed position and an open position to close or open the vehicle's opening. Further, in some existing cover assemblies, the cover assembly includes a base (such as a charging socket) for connecting to an external device (such as a charging gun).

Summary of the Invention

[0004] Through long - term observation and research, the inventor of this application has found that when the cover of the cover assembly is in the closed position, there is a possibility that the cover may undergo an undesirable movement due to an external force, and as a result, the cover may not be able to remain in the closed position. Further, the inventor of this application has also found that the base of the cover assembly (such as a charging socket) is fixedly arranged within the cover assembly and is immovable, and its position is usually at a specific distance from the vehicle's opening. This makes it inconvenient to connect an external device (such as a charging gun) to the base.

[0005] To at least partially solve these technical problems, a cover assembly comprising a housing, a cover, and a cover pusher is provided according to a first aspect of the present application. The housing has a housing opening having a height direction and a depth direction. The housing defines a first raceway groove. The cover is connected to the housing via the first raceway groove and is configured to move between a closed position and an open position along the height direction and the depth direction, guided by the first raceway groove, to close or open the housing opening. The cover pusher is provided with an operating mechanism which is operably connected to the cover via the operating mechanism and is driven by a drive mechanism to push the cover and move it between a closed position and an open position. The first raceway groove includes a first limiting groove portion (segment) configured to prevent the cover from moving along the height direction of the housing by external force when the cover is in the closed position. The operating mechanism is configured to prevent the cover from moving along the depth direction of the housing by external force when the cover is in the closed position.

[0006] In some embodiments, the first raceway groove is connected to a first restricting groove portion and further comprises a first guide groove portion configured to guide the cover and rotate it relative to the housing.

[0007] In some embodiments, the first limiting groove portion extends substantially along the depth direction of the housing, and the first guide groove portion is an arc-shaped groove.

[0008] In some embodiments, the cover comprises a mounting portion through which the cover is operably connected to the operating structure of the cover pusher, and a main body portion connected to the mounting portion and having a shape that matches the housing opening.

[0009] In some embodiments, the housing is provided with a support shaft through which a cover pusher is rotatably supported in the housing. The mounting portion of the cover is provided with a receiving groove that receives the support shaft internally. The receiving groove extends for a specific length in the radial direction of the support shaft, allowing the cover to move relative to the housing.

[0010] In some embodiments, the cover mounting portion is further provided with a cover guide pin. The cover guide pin is received in a first raceway groove and is operably connected to the operating structure of the cover pusher. When the cover is in the closed position, the cover guide pin is located in the first limiting groove portion of the housing, and when the cover is in the open position, the cover guide pin is located in the first guide groove portion of the housing.

[0011] In some embodiments, the operating structure includes a second raceway groove. The second raceway groove has a second restricting groove portion and a second guide groove portion that receive and connect to each other, respectively, a cover guide pin. When the cover is in the closed position, the cover guide pin is located within the second restricting groove portion, and when the cover is in the open position, the cover guide pin is located within the second guide groove portion.

[0012] In some embodiments, the second limiting groove portion extends substantially along the height direction of the housing. The second guide groove portion extends from the second limiting groove portion away from the housing opening, allowing the cover guide pin to move from the first limiting groove portion of the housing toward the first guide groove portion of the housing in accordance with the drive of the drive unit.

[0013] In some embodiments, the operating mechanism includes an operating lever. The operating lever is rotatably connected to a cover pusher via a connecting pin and fixedly connected to a cover guide pin. When the cover is in the closed position, the central axes of the support shaft, connecting pin, and cover guide pin are substantially at the same position in the height direction of the housing, preventing the cover from moving along the depth direction of the housing under external force.

[0014] In some embodiments, the cover assembly further comprises a base that is rotatably mounted to the housing around a base axis so as to have an extended position and a retracted position relative to the housing opening.

[0015] In some embodiments, the cover assembly is operably connected to a drive unit and a base, and further comprises a base pusher that rotates relative to the housing simultaneously with the cover pusher in accordance with the drive unit's operation, pushing and rotating the base.

[0016] In some embodiments, the base pusher is provided with a third raceway groove having a drive groove portion, and the base is provided with a base guide pin. The base guide pin is received in the third raceway groove and cooperates with the drive groove portion to enable the base pusher to push and rotate the base.

[0017] In some embodiments, the third raceway groove further comprises a third limiting groove portion connected to one end of the drive groove portion. The third limiting groove portion is configured to prevent the base from rotating relative to the housing when the base is in the extended position due to external forces.

[0018] In some embodiments, when the base is in the extended position, the extension direction of the third limiting groove portion substantially passes through the central axes of the base guide pin and the base shaft.

[0019] In some embodiments, the third raceway groove further comprises a third guide groove portion connected to the other end of the drive groove portion. The third guide groove portion is configured to guide the base guide pin and allow it to slide within it when the base pusher is rotationally driven by the drive device while the base remains stationary relative to the housing.

[0020] In some embodiments, the cover assembly includes a drive unit mounted on the housing.

[0021] A second aspect of the present application provides a cover assembly comprising a housing, a base, and a base pusher. The housing has a housing opening. The base is rotatably mounted to the housing around a base axis so as to have an extended position and a retracted position relative to the housing opening. The base pusher is operably connected to the base so as to push and rotate the base in accordance with the drive of a drive device.

[0022] In some embodiments, the base pusher is provided with a third raceway groove having a drive groove portion, and the base is provided with a base guide pin. The base guide pin is received in the third raceway groove and cooperates with the drive groove portion to enable the base pusher to push and rotate the base.

[0023] In some embodiments, the third raceway groove further comprises a third limiting groove portion connected to one end of the drive groove portion. The third limiting groove portion is configured to prevent the base from rotating relative to the housing when the base is in the extended position due to external forces.

[0024] In some embodiments, when the base is in the extended position, the extension direction of the third limiting groove portion substantially passes through the central axes of the base guide pin and the base shaft.

[0025] According to the structure of the cover assembly of the present application, undesirable movement of the cover when receiving an external force in its closed position is avoided, thereby enabling the cover to continue to be in its closed position. The term "external force" when used in the present application refers to a force that can be applied to the cover in any direction other than from a driving device, such as being pushed by hand.

[0026] In the cover assembly of the present application, the base is movable between an extended position and a retracted position. When it is necessary to connect an external device to the base, the base is driven to its extended position to facilitate the connection with the external device. When it is not necessary to connect an external device to the base, the base is driven back to its retracted position.

Brief Description of the Drawings

[0027] [Figure 1A] It is a schematic perspective view of a cover assembly according to an exemplary embodiment of the present application. [Figure 1B] It is a schematic exploded view of the cover assembly of FIG. 1A, in which the driving device is omitted. [Figure 1C] It is a schematic rear perspective view of the cover pusher shown in FIG. 1B. [Figure 2A] It is a schematic side view of the cover assembly of FIG. 1A in a first state where the cover pusher is not rotationally driven and the cover is in a closed position. [Figure 2B] It is a schematic side view of the cover assembly of FIG. 1A in a second state where the cover pusher is rotationally driven and the cover is in an intermediate position. [Figure 2C] It is a schematic side view of the cover assembly of FIG. 1A in a third state where the cover pusher is further rotationally driven and the cover has reached an open position. [Figure 3] It is a schematic perspective view of a cover pusher according to another exemplary embodiment of the present application. [Figure 4A]Figure 3 is a schematic side view of the cover assembly in a first state where the cover pusher is not rotated and the cover is in the closed position, according to another exemplary embodiment utilizing the cover pusher shown in Figure 3. [Figure 4B] Figure 4A is a schematic side view of the cover assembly in a second state where the cover pusher is rotated and the cover is in an intermediate position. [Figure 4C] Figure 4A is a schematic side view of the cover assembly in a third state where the cover pusher is further rotated and the cover has reached the open position. [Figure 5A] This is a schematic front perspective view of a cover assembly according to yet another exemplary embodiment of the present application. [Figure 5B] Figure 5A is a schematic rear perspective view of the cover assembly, with the housing omitted in the figure. [Figure 5C] Figure 5A is a schematic exploded view of the cover assembly, and the drive mechanism is omitted in the figure. [Figure 6A] Figure 5A is a schematic side view of the cover assembly in the first state, where the base pusher is not rotated and the base is in the retracted position. [Figure 6B] Figure 5A is a schematic side view of the cover assembly in a second state where the base pusher is rotated, but the base remains in the retracted position. [Figure 6C] Figure 5A is a schematic side view of the cover assembly in a third state where the base pusher is further rotated and the base has reached the extended position. [Figure 6D] Figure 5A is a schematic side view of the cover assembly in a fourth state, where the base pusher is further rotated and the base remains in the extended position. [Modes for carrying out the invention]

[0028] Various specific embodiments of the present invention are described below with reference to the accompanying drawings which form part of this specification. While terms indicating direction, such as “front,” “rear,” “up,” “down,” “left,” and “right,” are used in this application to describe various exemplary structural components and elements, it should be understood that these terms are used in this application solely for explanatory purposes, based on the exemplary orientation shown in the drawings. Since the embodiments disclosed in this application can be positioned in different orientations, these terms indicating direction are illustrative only and should not be construed as limiting. Where possible, the same or similar reference numerals used in this application refer to the same component.

[0029] Figures 1A to 2C relate to a cover assembly 100 according to an exemplary embodiment of the present application. Figures 1A to 1C show the schematic overall structure of the cover assembly 100. Figures 2A to 2C schematically show the process by which the cover 120 of the cover assembly 100 moves from the closed position to the open position.

[0030] Figure 1A is a schematic perspective view of the cover assembly 100. Figure 1B is a schematic exploded view of the cover assembly 100, in which the drive unit 130 is omitted. Figure 1C is a schematic rear perspective view of the cover pusher 150 of the cover assembly 100.

[0031] As shown in Figures 1A and 1B, the cover assembly 100 comprises a housing 110, a cover 120, a drive unit 130, a base 140, a cover pusher 150, a support shaft 160, and a drive shaft 170. The housing 110 has a housing opening 114, which has depth (X), width (Y), and height (Z) directions. The cover 120 is connected to the housing 110 and is movable between a closed position and an open position along the height and depth directions of the housing to close or open the housing opening 114. The drive unit 130 is attached to the housing 110 to drive and move the cover 120. In other embodiments, the drive unit 130 may not be attached to the housing 110 and may be provided independently of the cover assembly 100. The base 140 is mounted inside the housing 110. The base 140 shown in the figure is a charging socket for connecting to a charging gun. In other embodiments, the base 140 may be other components for connecting to other external devices. The cover pusher 150 is operably connected to the cover 120. A support shaft 160 is fixedly positioned in the housing 110, and the cover pusher 150 is rotatably supported in the housing 110 via the support shaft 160. The support shaft 160 shown in the figure is in the form of a pin. A drive shaft 170 is connected at one end to a drive unit 130 and rotates in accordance with the drive of the drive unit 130. Since the drive shaft 170 is fixedly connected to the cover pusher 150 at the other end, the cover pusher 150 pushes the cover 120 in accordance with the drive of the drive unit 130, moving it between the closed and open positions.

[0032] Referring to Figure 1B, the housing 110 comprises a main housing 111, a first side cover plate 112, and a second side cover plate 113. The first side cover plate 112 is connected to the side of the main housing 111. The second side cover plate 113 is positioned outside the first side cover plate 112. The first side cover plate 112 is spaced apart from the main housing 111 (not shown) to rotatably accommodate a mounting portion 122 of a cover 120 in between, thereby preventing the cover 120 from moving along the width direction of the housing 110. The first side cover plate 112 is spaced apart from the second side cover plate 113, with a cover pusher 150 rotatably positioned between them. The second side cover plate 113 is provided with a drive shaft hole 117, and a drive shaft 170 is connected to a drive unit 130 through the drive shaft hole 117. In other embodiments, it should be understood that the main housing 111, the first side cover plate 112, and the second side cover plate 113 may be constructed integrally.

[0033] The first side cover plate 112 is provided with a support shaft hole 116. The support shaft 160 passes through the support shaft hole 116 and the first side cover plate 112 and is connected to the cover pusher 150. The first side cover plate 112 defines a first raceway groove 115. The cover 120 is connected to the housing 110 through the first raceway groove 115 and is movable between a closed position and an open position along the height and depth directions of the housing 110 according to the guidance of the first raceway groove 115.

[0034] The first raceway groove 115 extends between a first end 115a and a second end 115c and includes a first limiting groove portion 118 and a first guide groove portion 119 connected to each other at a connection point 115b. The first limiting groove portion 118 extends substantially in the depth direction of the housing 110 so that when the cover 120 is in the closed position, the first limiting groove portion 118 can prevent the cover 120 from moving along the height direction of the housing 110 due to external forces. In the embodiment shown in the figure, the first limiting groove portion 118 is a linear groove that extends substantially in the depth direction of the housing 110. It should be understood that in other embodiments, the first limiting groove portion 118 may have other shapes, such as an arc-shaped groove. The first guide groove portion 119 guides the rotation of the cover 120 relative to the housing 110. In the embodiment shown in the figure, the first guide groove portion 119 is an arc-shaped groove.

[0035] Referring to Figure 1B, the cover 120 comprises a main body portion 121 and a mounting portion 122. The main body portion 121 is shaped to match the housing opening 114 so that it can close the housing opening 114. In the embodiment shown in the figure, the main body portion 121 is substantially a rectangular plate. The mounting portion 122 is connected to the main body portion 121 and is rotatably positioned between the main housing 111 of the housing 110 and the first side cover plate 112.

[0036] Continuing to refer to Figure 1B, the mounting portion 122 is provided with a receiving groove 126, and the support shaft 160 is received within the receiving groove 126. The receiving groove 126 extends for a specific length in the radial direction of the support shaft 160 and thus has a first end 126a and a second end 126b, allowing the cover 120 to move relative to the housing 110 along the depth direction of the housing 110. As the cover 120 moves along the depth direction of the housing 110 following the guidance of the first limiting groove portion 118 of the first raceway groove 115, the receiving groove 126 moves relative to the support shaft 160, causing the support shaft 160 to move between the first end 126a and the second end 126b of the receiving groove 126. In the embodiment shown in the figure, the receiving groove 126 is shown as a linear groove and extends substantially in the depth direction of the housing 110 when the cover 120 is in the closed position. In other embodiments, it should be understood that the receiving groove 126 may have a different shape, as long as the shape of the receiving groove 126 matches the first limiting groove portion 118 of the housing 110 and allows the cover 120 to move from the first limiting groove portion 118 to the first guide groove portion 119 of the housing 110 in accordance with the drive of the drive device 130. For example, when the first limiting groove portion 118 is configured as an arc shape, the receiving groove 126 is also configured as an arc shape. The support shaft 160 can also rotate relative to the receiving groove 126, allowing the cover 120 to rotate around the support shaft 160 relative to the housing 110 in accordance with the guidance of the first guide groove portion 119 of the housing 110.

[0037] Continuing to refer to Figure 1B, the mounting portion 122 is further provided with a cover guide pin 125. The cover guide pin 125 is received in the first raceway groove 115 of the housing 110 and is operably connected to the cover pusher 150. When the cover 120 is in the closed position, the cover guide pin 125 is located in the first limiting groove portion 118 of the first raceway groove 115, and when the cover 120 is in the open position, the cover guide pin 125 is located in the first guide groove portion 119 of the first raceway groove 115.

[0038] Referring to Figures 1B and 1C, the cover pusher 150 is fixedly connected to the drive shaft 170 at one end and rotates in accordance with the drive of the drive unit 130. As shown in Figure 1C, the cover pusher 150 has a hole 156 on the other side. The hole 156 is aligned coaxially with the drive shaft 170 and rotatably receives the support shaft 160, so that the cover pusher 150 can rotate relative to the support shaft 160 in accordance with the drive of the drive unit 130.

[0039] Referring to Figure 1B, the cover pusher 150 is further provided with an operating structure 154 which is operably connected to the cover 120 through the operating structure 154, and pushes the cover 120 to move it between a closed position and an open position in accordance with the drive of the drive device 130. Furthermore, when the cover 120 is in the closed position, the operating structure 154 can prevent the cover 120 from moving along the depth direction of the housing 110 due to external forces. As shown in the figure, the operating structure 154 is provided with a second raceway groove 155 for receiving the cover guide pin 125. The second raceway groove 155 extends from its first end 155a to its second end 155c and has a second limiting groove portion 158 and a second guide groove portion 159 which are connected to each other at the connection point 155b of the second raceway groove 155. When the cover 120 is in the closed position, the cover guide pin 125 is located within the second limiting groove portion 158, and when the cover 120 is in the open position, the cover guide pin 125 is located within the second guide groove portion 159.

[0040] To prevent the cover 120 from moving along the depth direction of the housing 110 due to external forces when the cover 120 is in the closed position, the second limiting groove portion 158 extends substantially along the height direction of the housing 110. In the embodiments shown in the figures, the second limiting groove portion 158 is a straight groove extending along the height direction of the housing 110. It should be understood that in other embodiments, the second limiting groove portion 158 may be configured to have other shapes, such as an arc-shaped groove. In some embodiments, the magnitude of the external force required to drive the cover 120 away from its closed position is determined by setting the angle between the second limiting groove portion 158 of the second raceway groove 155 and the first limiting groove portion 118 of the first raceway groove 115. In some embodiments, when the cover 120 is in the closed position, the angle between the second limiting groove portion 158 of the second raceway groove 155 and the first limiting groove portion 118 of the first raceway groove 115 is between 70 and 110 degrees. In some embodiments, when the cover 120 is in the closed position, the angle between the second limiting groove portion 158 of the second raceway groove 155 and the first limiting groove portion 118 of the first raceway groove 115 is 90 degrees.

[0041] The second guide groove portion 159 extends from the second limiting groove portion 158 toward the housing opening 114, and in accordance with the drive of the drive device 130, it allows the cover guide pin 125 to move from the first limiting groove portion 118 toward the first guide groove portion 119 of the housing 110. In the embodiment shown in the figure, the second guide groove portion 159 is a straight groove inclined with respect to the depth direction of the housing 110. It should be understood that the second guide groove portion 159 may be configured in other shapes, such as a straight groove extending parallel to the depth direction of the housing, or an arc-shaped groove.

[0042] The process by which the cover 120 of the cover assembly 100 moves from the closed position to the open position will be described below with reference to Figures 2A to 2C. Figure 2A is a schematic side view of the cover assembly 100 in a first state where the cover pusher 150 is not rotated and the cover 120 is in the closed position. Figure 2B is a schematic side view of the cover assembly 100 in a second state where the cover pusher 150 is rotated and the cover 120 is in an intermediate position. Figure 2C is a schematic side view of the cover assembly 100 in a third state where the cover pusher 150 is further rotated and the cover 120 has reached the open position.

[0043] As shown in Figure 2A, when the cover 120 is in the closed position, the support shaft 160 is near the first end 126a of the receiving groove 126 of the cover 120, and the cover guide pin 125 is within the first limiting groove portion 118 of the first raceway groove 115 of the housing 110, and within the second limiting groove portion 158 of the second raceway groove 155 of the cover pusher 150. The figure illustrates that the cover guide pin 125 is located at the first end 115a of the first raceway groove 115 and the first end 155a of the second raceway groove 155.

[0044] From Figure 2A to Figure 2B, the cover pusher 150 is driven to rotate around the support shaft 160 relative to the housing 110 in a counterclockwise direction (arrow R) as shown in Figure 2A. The rotation process of the cover pusher 150 from Figure 2A to Figure 2B can be divided into two stages.

[0045] In the first stage, the cover pusher 150 rotates and rises relative to the housing 110 around the support shaft 160, raising the second limiting groove portion 158 of the second raceway groove 155 relative to the cover guide pin 125. This moves the cover guide pin 125 from the first end 155a of the second raceway groove 155 to the connection point 155b of the second raceway groove 155. During this first stage, the position of the cover guide pin 125 relative to the housing 110 remains unchanged, and the cover guide pin 125 remains at the first end 115a of the first raceway groove 115 of the housing 110. As a result, the cover 120 remains stationary relative to the housing 110 and remains in its closed position. Correspondingly, the position of the support shaft 160 in the receiving groove 126 also remains unchanged, remaining near the first end 126a of the receiving groove 126.

[0046] After the cover guide pin 125 reaches the connection point 155b of the second raceway groove 155, the cover pusher 150 begins a second stage of rotation. In the second stage, the cover pusher 150 continues to rotate and rise relative to the housing 110 around the support shaft 160, causing the second guide groove portion 159 of the second raceway groove 155 to rise relative to the cover guide pin 125, as a result the cover guide pin 125 gradually approaches the second end portion 155c of the second raceway groove 155. This moves the cover guide pin 125 along the first limiting groove portion 118 of the first raceway groove 115 toward the connection point 115b of the first raceway groove 115. Thus, the cover 120 moves into the interior of the housing 110 along the depth direction of the housing 110, guided by the first limiting groove portion 118. Correspondingly, the receiving groove 126 of the cover 120 moves relative to the support shaft 160, causing the support shaft 160 to gradually move closer to the second end 126b of the receiving groove 126.

[0047] When the cover pusher 150 rotates to the position shown in Figure 2B, the cover guide pin 125 reaches the connection point 115b of the first raceway groove 115 and is near the second end 155c of the second raceway groove 155. The cover 120 moves inward a certain distance along the depth direction of the housing 110 relative to its closed position and reaches an intermediate position. Correspondingly, the support shaft 160 reaches a position near the second end 126b of the receiving groove 126.

[0048] From Figure 2B to Figure 2C, the cover pusher 150 is continuously driven to rotate counterclockwise (arrow R) relative to the housing 110 around the support shaft 160, as shown in Figure 2B. As the cover pusher 150 rotates, the cover guide pin 125 moves along the first guide groove portion 119 of the first raceway groove 115 of the housing 110, causing the cover 120 to rotate relative to the housing 110. During this process, the position of the cover guide pin 125 in the second raceway groove 155 of the cover pusher 150 remains unchanged, as does the position of the support shaft 160 in the receiving groove 126.

[0049] When the cover pusher 150 rotates to the position shown in Figure 2C, the cover 120 reaches the open position. At this time, the cover guide pin 125 is located within the first guide groove portion 119 of the first raceway groove 115 of the housing 110 and within the second guide groove portion 159 of the second raceway groove 155 of the cover pusher 150. The figure illustrates the cover guide pin 125 located near the second end 115c of the first raceway groove 115 and near the second end 155c of the second raceway groove 155. The support shaft 160 is located near the second end 126b of the receiving groove 126.

[0050] As shown in Figures 2A to 2C, the process of the cover 120 moving from the closed position to the open position involves movement in two directions, including movement along the depth direction of the housing 110 and rotation relative to the housing 110, guided by the first limiting groove portion 118 and the first guide groove portion 119 of the first raceway groove 115 of the housing 110, respectively. In the embodiments shown in the figures, since the first limiting groove portion 118 of the first raceway groove 115 is a linear groove along the depth direction of the housing 110, the movement of the cover 120 along the depth direction of the housing 110 is translational motion. It should be understood that in other embodiments, the cover 120 may perform different forms of movement along the depth direction of the housing 110. For example, if the first raceway groove 115 is an arc-shaped groove along the depth direction of the housing 110, the movement of the cover 120 along the depth direction of the housing 110 takes the form of rotation relative to the housing 110.

[0051] It should be understood that when the cover assembly 100 performs the operation process from Figure 2C to Figure 2A, the cover 120 moves from the open position to the closed position.

[0052] Figures 3 to 4C relate to a cover assembly 300 according to another exemplary embodiment of the present application. The cover assembly 300 differs from the aforementioned cover assembly 100 only in the operating structure 354 of the cover pusher 350. Figure 3 shows a schematic perspective view of the cover pusher 350 of the cover assembly 300. Figures 4A to 4C schematically show the process by which the cover 120 of the cover assembly 300 moves from the closed position to the open position. For brevity, only the structural difference between the cover assembly 300 and the cover assembly 100, namely the operating structure 354 of the cover pusher 350, will be described.

[0053] The operating structure 354 of the cover pusher 350 includes an operating lever 355. The operating lever 355 is rotatably connected to the cover pusher 350, and the cover pusher 350 is operably connected to the cover 120 via the operating lever 355. Specifically, as shown in Figure 3, the cover pusher 350 comprises a body 351 and an operating lever 355. The operating lever 355 is rotatably connected at one end to the body 351 of the cover pusher 350 via a connecting pin 358, and fixedly connected at the other end to a cover guide pin 125 of the cover 120. When the cover pusher 350 is rotationally driven around the support shaft 160, the cover 120 moves relative to the housing 110 through the cooperation of the cover guide pin 125 and the operating lever 355 with the first raceway groove 115 of the housing 110.

[0054] The process by which the cover 120 of the cover assembly 300 moves from the closed position to the open position will be explained with reference to Figures 4A to 4C. Figure 4A is a schematic side view of the cover assembly 300 in a first state where the cover pusher 350 is not rotated and the cover 120 is in the closed position. Figure 4B is a schematic side view of the cover assembly 300 in a second state where the cover pusher 350 is rotated and the cover 120 is in an intermediate position. Figure 4C is a schematic side view of the cover assembly 300 in a third state where the cover pusher 350 is further rotated and the cover 120 has reached the open position. For brevity, the differences between the movement processes shown in Figures 4A to 4C and those shown in Figures 2A to 2C will be explained primarily. Only a brief explanation of the details of Figures 4A to 4C that are the same as those shown in Figures 2A to 2C will be given, and for omitted explanations of Figures 4A to 4C, please refer to the explanation for Figures 2A to 2C.

[0055] As shown in Figure 4A, when the cover 120 is in the closed position, the central axes of the support shaft 160, the connecting pin 358, and the cover guide pin 125 are substantially located at the same position in the height direction of the housing 110. This prevents the cover 120 from moving along the depth direction of the housing 110 when subjected to external forces.

[0056] During the process from Figure 4A to Figure 4B, as the cover pusher 350 is rotationally driven, the body 351 of the cover pusher 350 rotates counterclockwise (arrow R) around the support shaft 160 as shown in the figure. Through the cooperation of the cover guide pin 125 and the first limiting groove portion 118 of the first raceway groove 115, the rotation of the body 351 of the cover pusher 350 causes the operating lever 355 of the cover pusher 350 to rotate around the connecting pin 358 relative to the body 351, thereby pushing the cover guide pin 125 and moving it along the first limiting groove portion 118. As a result, the cover 120 moves inward along the depth direction of the housing 110, following the guidance of the first limiting groove portion 118. Correspondingly, the support shaft 160 moves within the receiving groove 126 of the cover 120.

[0057] Figure 4B shows that the cover guide pin 125 has reached the connection point 115b of the first raceway groove 115, the support shaft 160 is near the second end 126b of the receiving groove 126, and the cover 120 has moved a certain distance toward the interior of the housing 110 and reached an intermediate position.

[0058] From Figure 4B to Figure 4C, the body 351 of the cover pusher 350 is continuously driven to rotate counterclockwise around the support shaft 160. As the body 351 of the cover pusher 350 continues to rotate, the operating lever 355 rotates relative to the housing 110, following the guidance of the first guide groove portion 119 of the first raceway groove 115, pushing the cover guide pin 125 and moving it along the first guide groove portion 119. As a result, the cover 120 rotates relative to the housing 110 and reaches the open position as shown in Figure 4C. During the process from Figure 4B to Figure 4C, the operating lever 355 of the cover pusher 350 does not rotate around the connecting pin 358 and therefore remains stationary relative to the body 351. Furthermore, during the process from Figure 4B to Figure 4C, the position of the support shaft 160 in the receiving groove 126 remains unchanged.

[0059] As described above, in the cover assembly 300, during the process in which the cover 120 moves from its closed position to its open position in the order shown in Figures 4A to 4C, the cover 120 undergoes movement in two directions similar to that in the movement process shown in Figures 2A to 2C.

[0060] It should be understood that when the cover assembly 300 performs the operation process from Figure 4C to Figure 4A, the cover 120 moves from the open position to the closed position.

[0061] Figures 5A to 6D relate to a cover assembly 500 according to yet another exemplary embodiment of the present application. Figures 5A to 5C show the schematic overall structure of the cover assembly 500. Figures 6A to 6C schematically show the process in which the cover 520 of the cover assembly 500 moves from the closed position to the open position, while the base 540 of the cover assembly 500 moves from the retracted position to the extended position.

[0062] Figure 5A is a schematic front perspective view of the cover assembly 500. Figure 5B is a schematic rear perspective view of the cover assembly 500, in which the housing 510 of the cover assembly 500 is omitted. Figure 5C is a schematic exploded view of the cover assembly 500, in which the drive unit 130 is omitted.

[0063] The mechanism by which the cover 520 of cover assembly 500 is driven to move between a closed position and an open position is similar to that of the cover 120 in cover assembly 100, and the structure of cover assembly 500 for achieving the movement of cover 520 is similar to the structure of cover assembly 100 for achieving the movement of cover 120. The substantial difference between cover assembly 500 and cover assembly 100 is that the base 540 of cover assembly 500 is rotatable between a retracted position and an extended position, and correspondingly, a base pusher 580 is added for driving the rotation of the base 540. For brevity, the following description will mainly focus on the substantial structural and movement differences between cover assembly 500 and cover assembly 100, while similarities and non-substantial differences will be omitted or only briefly described. For omitted or briefly described content, refer to the description of cover assembly 100.

[0064] Referring to Figures 5A to 5C, the cover assembly 500 comprises a housing 510, a cover 520, a drive unit 130, a base 540, a cover pusher 550, a support shaft 560, a drive shaft 570, and a base pusher 580.

[0065] The housing 510 defines a housing opening 514 and comprises a main housing 511. A first side cover plate 512 is connected to the main housing 511. The housing 510 further comprises a second side cover plate 513 positioned outside the first side cover plate 512. The first side cover plate 512 defines a first raceway groove 115 identical to that of the first side cover plate 112 of the housing 110 of the cover assembly 100, which is used to guide the cover 520 to move between a closed position and an open position, based on the same principle and method as that of the cover assembly 100. The main housing 511 is provided with mounting legs 511a, which define mounting holes 511b for rotatably mounting the base 540.

[0066] A cover 520 is shown that has a different shape from that of cover 120 of cover assembly 100. Nevertheless, it is provided with the same cover guide pins 125 and receiving grooves 126 as cover 120 and is driven to move between the closed and open positions based on the same principles and methods as cover 120.

[0067] The cover pusher 550 is provided with the same second raceway groove 155 as that of the cover pusher 150 of the cover assembly 100, and drives the cover 520 to move between the closed and open positions in accordance with the drive of the drive unit 130, based on the same principle and method as the cover pusher 150. The cover pusher 550 differs from the cover pusher 150 only in that the cover pusher 550 is provided with only a shaft hole 552 for fixed connection to the drive shaft 570, and does not have a hole for connection to the support shaft 560.

[0068] In the cover assembly 500, the front portion 571 of the drive shaft 570 is located outside the main housing 511 and is fixedly connected to the drive unit 130. It is inserted into the shaft hole 552 of the cover pusher 550 and is fixedly connected to the cover pusher 550. The rear portion 572 of the drive shaft 570 extends inside the main housing 511 and is fixedly connected to the base pusher 580. The support shaft 560 is in the form of a sleeve fitted between the front portion 571 and the rear portion 572 of the drive shaft 570, making the drive shaft 570 rotatable relative to the support shaft 560. The support shaft 560 is fixedly supported by the main housing 511. The drive unit 130 rotates the drive shaft 570, thereby simultaneously rotating the cover pusher 550 and the base pusher 580 relative to the housing 510. In this configuration, when the cover 520 is driven to move toward the open position, the base 540 is driven to move toward the extended position, and when the cover 520 is driven to move toward the closed position, the base 540 is driven to move toward the retracted position. Therefore, when the cover 520 is in the open position, the base 540 is in the extended position, and when the cover 520 is in the retracted position, the base 540 is in the retracted position.

[0069] The base 540 is provided with a base shaft 542 for insertion into the mounting holes 511b of the mounting legs 511a of the housing 510, and the base 540 can be rotatably mounted on the housing 510 around the base shaft 542. The base 540 is also provided with a base guide pin 541 for operational connection with the base pusher 580.

[0070] The base pusher 580 is located inside the main housing 511. The base pusher 580 is provided with a shaft hole 582 for receiving the rear portion 572 of the drive shaft 570 and for fixed connection with the drive shaft 570. The base pusher 580 is further provided with a third raceway groove 581 for receiving the base guide pin 541 of the base 540. The base pusher 580 pushes the base 540 and rotates it between a retracted position and an extended position in accordance with the drive of the drive unit 130.

[0071] The third raceway groove 581 of the base pusher 580 comprises a third limiting groove portion 588, a drive groove portion 587, and a third guide groove portion 589. The third limiting groove portion 588 and the third guide groove portion 589 are connected to the two ends of the drive groove portion 587, respectively.

[0072] The drive groove portion 587 is used in cooperation with the base guide pin 541 so that, in accordance with the drive of the drive unit 130, the base pusher 580 pushes the base 540 and becomes rotatable relative to the housing 510. In the embodiment shown in the figure, the drive groove portion 587 is substantially a straight groove. In other embodiments, the drive groove portion 587 may be configured in other shapes, such as an arc-shaped groove, as long as the base pusher 580 can push the base 540 and rotate relative to the housing 510 through the cooperation of the drive groove portion 587 and the base guide pin 541.

[0073] When the base 540 is in the extended position, the base guide pin 541 is located within the third limiting groove portion 588. The third limiting groove portion 588 can prevent the base 540 from rotating around the base shaft 542 under external force. In the embodiment shown in the figure, when the base 540 is in the extended position, the extending direction of the third limiting groove portion 588 substantially passes through the respective central axes of the base guide pin 541 and the base shaft 542 (see Figure 6D). In the embodiment shown in the figure, when the base guide pin 541 slides within the third limiting groove portion 588, the base 540 remains stationary relative to the housing 510. In other embodiments, when the base guide pin 541 slides within the third limiting groove portion 588, the base 540 may be pushed by the base pusher 580 and rotated relative to the housing 510.

[0074] When the base 540 is in the retracted position, the base guide pin 541 is located within the third guide groove portion 589. The third guide groove portion 589 is configured such that when the base pusher 580 is rotationally driven by the drive unit 130, the third guide groove portion 589 guides the base guide pin 541 and allows it to slide within it, so that the base 540 remains stationary relative to the housing 510. This prevents interference between the base 540 and the cover 520 during their simultaneous movement.

[0075] The process by which the base 540 moves from the retracted position to the extended position will be described with reference to Figures 6A to 6D. During this process, the cover 520 is driven from the closed position to the open position in the same manner as shown in Figures 2A to 2C. For brevity, the movement of the cover 520 will not be described repeatedly in the following explanation.

[0076] Figure 6A is a schematic side view of the cover assembly 500 in a first state where the base pusher 580 is not rotated and the base 540 is in the retracted position. Figure 6B is a schematic side view of the cover assembly 500 in a second state where the base pusher 580 is rotated, but the base 540 remains in the retracted position. Figure 6C is a schematic side view of the cover assembly 500 in a third state where the base pusher 580 is further rotated and the base 540 has reached the extended position. Figure 6D is a schematic side view of the cover assembly 500 in a fourth state where the base pusher 580 is further rotated and the base 540 remains in the extended position.

[0077] As shown in Figure 6A, when the base 540 is in the retracted position, the base 540 is located inside the housing 510, away from the housing opening 514. The base guide pin 541 is located at the starting point of the third guide groove portion 589 in the third raceway groove 581. Figure 6A shows that when the base 540 is in the retracted position, the cover 520 is correspondingly in the closed position, closing the housing opening 514.

[0078] From Figure 6A to Figure 6B, the base pusher 580 rotates in the counterclockwise direction shown in the figure (arrow R). As a result, the third raceway groove 581 moves relative to the base guide pin 541, causing the base guide pin 541 to slide within the third guide groove portion 589 of the third raceway groove 581. When the state shown in Figure 6B is reached, the base guide pin 541 is just within the drive groove portion 587 of the third raceway groove 581. During the process from Figure 6A to Figure 6B, the base pusher 580 does not push or rotate the base 540, and therefore the base 540 remains stationary relative to the housing 510. Thus, in the state shown in Figure 6B, the base 540 is still in its retracted position.

[0079] During the process from Figure 6A to Figure 6B, the cover 520 is driven away from its closed position. That is, the cover 520 is driven to move in front of the base 540. Referring to the structure shown in Figure 6A, if the cover 520 and the base 540 move simultaneously, their movements will interfere with each other. As described in relation to Figures 6A and 6B, the present invention provides a third guide groove portion 589 in the third raceway groove 581 so that during the process from Figure 6A to Figure 6B, the cover 520 is driven to move while the base 540 remains stationary, thereby avoiding interference between the movements of the cover 520 and the base 540. Furthermore, this method of avoiding interference does not require an increase in the space of the housing 510. It should be understood that the third guide groove portion 589 is provided as needed. For example, in other embodiments where it is not necessary to prevent interference between the movements of the cover 520 and the base 540, the third guide groove portion 589 may not be provided.

[0080] From Figure 6B to Figure 6C, the base pusher 580 continues to rotate counterclockwise (arrow R) as shown in the figure. As a result, the third raceway groove 581 continues to move relative to the base guide pin 541, causing the base guide pin 541 to slide within the drive groove portion 587 of the third raceway groove 581. The cooperation between the base guide pin 541 and the drive groove portion 587 causes the base pusher 580 to push the base 540, rotating it around the base axis 542 relative to the housing 510 toward the extended position. When the state shown in Figure 6C is reached, the base guide pin 541 reaches the junction between the drive groove portion 587 and the third limiting groove portion 588 of the third raceway groove 581, and the base 540 reaches the extended position, close to the housing opening 514. During the process from Figure 6B to Figure 6C, the cover 520 is driven further away from its closed position.

[0081] From Figure 6C to Figure 6D, the base pusher 580 continues to rotate counterclockwise (arrow R) as shown in the figure. As a result, the third raceway groove 581 moves relative to the base guide pin 541, causing the base guide pin 541 to slide within the third limiting groove portion 588 of the third raceway groove 581. When the state shown in Figure 6D is reached, the base guide pin 541 reaches the end of the third limiting groove portion 588. During the process from Figure 6C to Figure 6D, the base 540 remains stationary relative to the housing 510. Therefore, in the state shown in Figure 6D, the base 540 remains in the extended position. During the process from Figure 6C to Figure 6D, the cover 520 is further driven to its open position. Therefore, when the cover 520 reaches the open position, the base 540 has already reached the extended position. It should be understood that the third limiting groove portion 588 may be provided as needed. In other embodiments, it should also be understood that the third limiting groove portion 588 may be configured to rotate the base 540 relative to the housing 510 such that the base 540 reaches the extended position at the same time that the cover 520 reaches the open position.

[0082] It should be understood that when the cover assembly 500 performs the movement process from Figure 6D to Figure 6A, the base 540 moves from the extended position to the retracted position and the cover 520 moves from the open position to the closed position. It should also be understood that the cover assembly 300 may utilize a rotatable base 540 and base pusher 580, as used in the cover assembly 500.

[0083] In this invention, the cooperation between the first raceway groove of the housing and the operating structure of the cover pusher prevents the cover from moving along the height and depth directions of the housing when the cover is in the closed position due to external forces. Furthermore, the cover is positioned within the housing so that it cannot move along the width direction of the housing. Therefore, in the cover assembly according to this invention, the cover can remain in the closed position and is virtually impossible to move away from the closed position due to undesirable external forces in any direction. In this invention, the base can extend or retract relative to the housing opening. When it is necessary to connect an external device to the base, the base moves to the extended position to facilitate connection with the external device.

[0084] In this invention, the movement of the base and the cover is driven by the same drive mechanism. Therefore, when the cover moves between the closed and open positions, the base moves correspondingly between the retracted and extended positions. Consequently, when the cover is in the open position, the base is in the extended position, or when the cover is in the closed position, the base is in the retracted position.

[0085] While this disclosure has been described in relation to the examples of embodiments outlined above, various alternatives, modifications, variations, improvements, and / or substantially equivalents may be apparent to those skilled in the art, whether known, unforeseeable, or potentially unforeseeable. In addition, the technical effects and / or problems described in this specification are illustrative and not limiting. Therefore, the disclosure may be used to address other technical problems and may have other technical effects. Correspondingly, various changes may be made without departing from the spirit or scope of this disclosure. Accordingly, this disclosure is intended to include all known or previously developed alternatives, modifications, variations, improvements, and / or substantially equivalents. [Explanation of Symbols]

[0086] 100 / 300 / 500 Cover Assembly 110 / 510 Housing 111 / 511 Main Housing 112 / 512 First side cover plate 113 / 513 Second side cover plate 114 / 514 Housing opening 115 First track groove 115a First end of the first track groove 115b Connection point of the first track groove 115c Second end of the first track groove 116 Support shaft hole 117 Drive shaft hole 118 First limiting groove portion of the first track groove 119 First guide groove portion of the first track groove 120 / 520 cover 121 Main body 122 Mounting part 125 Cover guide pins 126 Receiving groove 126a First end of the receiving groove 126b Second end of the receiving groove 130 Drive unit 140 / 540 base 150, 350 / 550 Cover Pusher 154 / 354 Operation structure part 155 Second track groove 155a First end of the second track groove 155b Connection point of the second track groove 155c Second end of the second track groove 156 holes 158 Second limiting groove portion of the second track groove 159 Second guide groove portion of the second track groove 160 / 560 support shaft 170 / 570 drive shaft 351 Main Unit 355 Operating lever 358 connection pins 511a Mounting leg 511b Mounting holes 541 Base guide pin 542 Base axis 552 Shaft hole of cover pusher 571 Front of the drive shaft 572 Rear of the drive shaft 580 Base Pusher 581 Third orbital groove 587 Drive groove section 588 Third limiting groove section 589 Third guide groove section

Claims

1. A cover assembly, A housing (110, 510) having housing openings (114, 514), having a height direction and a depth direction, and defining a first raceway groove (115), A cover (120, 520) connected to the housing (110, 510) via the first raceway groove (115), wherein the cover (120, 520) is configured to move between a closed position and an open position along the height direction and the depth direction guided by the first raceway groove (115) to close or open the housing opening (114, 514), A cover pusher (150, 350, 550) is provided with an operating structure (154, 354), and is operably connected to the cover (120, 520) via the operating structure (154, 354), and pushes the cover (120, 520) so that it moves between the closed position and the open position when driven by a drive device (130), and It is equipped with, The first raceway groove (115) includes a first limiting groove portion (118) configured to prevent the cover (120, 520) from moving along the height direction of the housing (110, 510) due to external force when the cover (120, 520) is in the closed position. The operating structure (154, 354) is configured to prevent the cover (120, 520) from moving along the depth direction of the housing (110, 510) due to external force when the cover (120, 520) is in the closed position. A cover assembly characterized by the following features.

2. The cover assembly according to claim 1, characterized in that the first raceway groove (115) further comprises a first guide groove portion (119) connected to the first limiting groove portion (118), the first guide groove portion (119) configured to guide the cover (120, 520) and rotate it relative to the housing (110, 510).

3. The first limiting groove portion (118) extends substantially along the depth direction of the housing (110, 510), The first guide groove portion (119) is an arc-shaped groove. The cover assembly according to claim 2, characterized in that...

4. The aforementioned cover (120, 520) Mounting portion (122), wherein the cover (120, 520) is operably connected to the operating structure portion (154, 354) of the cover pusher (150, 350, 550) via the mounting portion (122), A main body portion (121) connected to the mounting portion (122), the main body portion (121) having a shape that matches the housing opening (114, 514), The cover assembly according to claim 3, characterized by comprising:

5. A support shaft (160) is provided in the housing (110, 510), and the cover pushers (150, 350, 550) are rotatably supported in the housing (110, 510) via the support shaft (160). A receiving groove (126) is provided in the mounting portion (122) of the cover (120, 520), and the support shafts (160, 560) are received within the receiving groove (126). The receiving groove (126) extends a specific length in the radial direction of the support shafts (160, 560), allowing the cover (120, 520) to move relative to the housing (110, 510). The cover assembly according to claim 4, characterized in that

6. A cover guide pin (125) is further provided on the mounting portion (122) of the cover (120, 520), and the cover guide pin (125) is received in the first raceway groove (115) and is operably connected to the operating structure portion (154, 354) of the cover pusher (150, 350, 550). When the cover (120, 520) is in the closed position, the cover guide pin (125) is located within the first limiting groove portion (118) of the housing (110, 510), and when the cover (120, 520) is in the open position, the cover guide pin (125) is located within the first guide groove portion (119) of the housing (110, 510). The cover assembly according to claim 5, characterized in that

7. The aforementioned operating structure (154, 354) is provided with a second raceway groove (155), the second raceway groove (155) receiving the cover guide pin (125) and having a second limiting groove portion (158) and a second guide groove portion (159) connected to each other, When the cover (110) is in the closed position, the cover guide pin (125) is located within the second limiting groove portion (158), and when the cover (110) is in the open position, the cover guide pin (125) is located within the second guide groove portion (159). The cover assembly according to claim 6, characterized in that

8. The second limiting groove portion (158) extends substantially along the height direction of the housing (110), The second guide groove portion (159) extends from the second limiting groove portion (158) in a direction away from the housing opening (114), so that the cover guide pin (125) can move from the first limiting groove portion (118) of the housing (110) toward the first guide groove portion (119) of the housing (110) by the drive device (130). The cover assembly according to claim 7, characterized in that...

9. The aforementioned operating structure (354) is equipped with an operating lever (355), the operating lever (355) is rotatably connected to the cover pusher (350) via a connecting pin (358), and is fixedly connected to the cover guide pin (125). When the cover (120) is in the closed position, the central axes of the support shaft (160), the connecting pin (358), and the cover guide pin (125) are substantially located at the same position in the height direction of the housing (110), preventing the cover (120) from moving along the depth direction of the housing (110) due to external forces. The cover assembly according to claim 6, characterized in that

10. The cover assembly according to claim 1, further comprising a base (540), wherein the base (540) is rotatably mounted on the housing (510) so as to have an extended position and a retracted position relative to the housing opening (514).

11. The cover assembly according to claim 10, further comprising a base pusher (580), wherein the base pusher (580) is operably connected to the drive unit (130) and the base (540), and rotates relative to the housing (510) simultaneously with the cover pusher (550) when driven by the drive unit (130), and pushes the base (540) to rotate.

12. The base pusher (580) is provided with a third raceway groove (581) having a drive groove portion (587), A base guide pin (541) is provided on the base portion (540), and the base guide pin (541) is received in the third raceway groove (581) and cooperates with the drive groove portion (587) to allow the base pusher (580) to push the base portion (540) to rotate. The cover assembly according to claim 11, characterized in that...

13. The cover assembly according to claim 12, wherein the third raceway groove (581) further comprises a third restricting groove portion (588) connected to one end of the drive groove portion (587), and the third restricting groove portion (588) is configured to prevent the base portion (540) from rotating relative to the housing (510) due to external force when the base portion (540) is in the extended position.

14. The cover assembly according to claim 13, characterized in that when the base portion (540) is in the extended position, the extending direction of the third limiting groove portion (588) substantially passes through the central axis of the base guide pin (541) and the base shaft (542).

15. The cover assembly according to claim 13, wherein the third raceway groove (581) further comprises a third guide groove portion (589) connected to the other end of the drive groove portion (587), and the third guide groove portion (589) is configured to guide the base guide pin (541) and allow it to slide inside when the base pusher (580) is rotationally driven by the drive device (130) while the base portion (540) remains stationary relative to the housing (510).

16. The cover assembly according to claim 1, characterized in that the cover assembly (100, 300, 500) comprises the drive unit (130) attached to the housing (110, 510).

17. A cover assembly, A housing (510) having a housing opening (514), A base (540) is rotatably attached to the housing (510) around a base shaft (542) so as to have an extended position and a retracted position relative to the housing opening (514), A base pusher (580) is operably connected to the base (540) so as to push and rotate the base (540) when driven by a drive device (130), A cover assembly characterized by having the following features.

18. The base pusher (580) is provided with a third raceway groove (581) having a drive groove portion (587), A base guide pin (541) is provided on the base portion (540), and the base guide pin (541) is received in the third raceway groove (581) and cooperates with the drive groove portion (587) to allow the base pusher (580) to push the base portion (540) to rotate. The cover assembly according to claim 17, characterized in that...

19. The cover assembly according to claim 18, wherein the third raceway groove (581) further comprises a third restricting groove portion (588) connected to one end of the drive groove portion (587), and the third restricting groove portion (588) is configured to prevent the base portion (540) from rotating relative to the housing (510) due to external force when the base portion (540) is in the extended position.

20. The cover assembly according to claim 19, characterized in that when the base portion (540) is in the extended position, the extending direction of the third limiting groove portion (588) substantially passes through the central axis of the base guide pin (541) and the base shaft (542).

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