Electric folding frame

Abstract

An electric folding frame comprises a frame, a driving cover plate and a follow-up cover plate, the driving cover plate and the follow-up cover plate are arranged side by side, a switching part is arranged on the front side of the driving cover plate, the frame is provided with a guide rail from front to back, and when the switching part moves along the guide rail from front to back, the driving cover plate and the follow-up cover plate are changed into a folded state from an unfolded state; the driving mechanism comprises a connecting rod and a linear driver, the linear driver is provided with a driving part, one end of the connecting rod is rotationally connected to the driving part, and the other end of the connecting rod is rotationally connected to the adapter part; and the jacking mechanism comprises a transmission piece and a jacking piece, and the transmission piece is pushed by the driving part to push the jacking piece upwards, so that the jacking piece applies upward thrust to the junction position of the driving cover plate and the follow-up cover plate. According to the scheme, the jacking mechanism is additionally arranged, the linear driver can pass through the dead zone state only through small driving force, the power needed by the linear driver is effectively reduced, and overall miniaturization is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile components, in particular to an electric folding frame. Background Art

[0002] Car trunks are often equipped with folding coat racks. These racks consist of two covers that, when unfolded, create a compartment within the trunk, making it easy to store different items. When more space is needed, the covers can be folded to create a larger storage area. Folding racks clearly offer enhanced storage capabilities, leading to their increasing popularity.

[0003] Traditional folding racks require the user to manually adjust the cover's folding position, which is cumbersome. Consequently, electric folding racks have emerged in recent years, utilizing electric actuators such as screw-type motors to fold the cover. However, during the initial transition from the unfolded to the folded state, nearing the dead zone, the electric actuator often requires significant driving force, resulting in high power requirements. Summary of the Invention

[0004] The present invention aims to solve the problem that the electric actuator of the existing electric folding frame requires a large driving force at the beginning of the cover changing from the unfolded state to the folded state, which leads to a large power requirement of the electric actuator.

[0005] In order to solve the above problems, the present invention provides an electric folding stand, comprising: a frame, and an active cover plate and a follower cover plate arranged side by side, the follower cover plate being rotatably connected to the frame at its rear side and being rotatably connected to the rear side of the active cover plate at its front side, a transition portion being provided on the front side of the active cover plate, the frame being provided with a guide rail extending from front to rear, the transition portion being slidably engaged with the guide rail, and when the transition portion moves from front to rear along the guide rail, the active cover plate and the follower cover plate change from an unfolded state to a folded state; A driving mechanism comprising a connecting rod and a linear actuator, wherein the linear actuator has a driving portion that can reciprocate in a front-to-rear direction, one end of the connecting rod is rotatably connected to the driving portion and the other end is rotatably connected to the adapter portion; The lifting mechanism includes a transmission member and a lifting member. The transmission member is located above the front of the linear drive. The lower end of the lifting member is connected to the transmission member and the upper end is directed toward the intersection of the active cover plate and the follower cover plate. When the adapter moves from front to back along the guide rail, the transmission member is pushed by the driving part to push the lifting member upward, so that the lifting member applies an upward thrust to the intersection of the active cover plate and the follower cover plate.

[0006] Compared with the existing technology, the above scheme adds a lifting mechanism. When the driving part of the linear drive moves from front to back, on the one hand, the connecting rod will drive the adapter backward, that is, the active cover plate is subjected to a backward force. On the other hand, the transmission part of the lifting mechanism is pushed by the driving part to push the lifting part upward, so that the lifting part applies an upward thrust to the intersection position of the active cover plate and the follower cover plate. At this time, the active cover plate can be more easily rotated and folded relative to the follower cover plate, so that the linear drive only needs a smaller driving force to pass through the dead zone state, effectively reducing the power required by the linear drive, and the lifting part is pushed upward by the action of the linear drive of the driving mechanism, without the need to add another power source, which is conducive to overall miniaturization.

[0007] In an improved solution, the transmission member includes a lifting guide rail and a sliding member, the lifting guide rail is arranged on the frame from front to back and the rear end of the lifting guide rail is higher than the front end, the sliding member is slidably connected to the lifting guide rail, and the sliding member is connected to the lifting member, when the sliding member is located at the front end of the lifting guide rail, the lower end of the sliding member is lower than the driving part, and the lifting member is in a low position; when the sliding member is located at the rear end of the lifting guide rail, the lower end of the sliding member is higher than the driving part, and the lifting member is pushed upward by the sliding member, so that the driving part moves from front to back. During the process, the sliding part at the front end of the jacking guide rail is first in contact with the driving part and moves backward under the drive of the driving part. At this time, the jacking part gradually rises from a low position and applies an upward thrust to the junction of the active cover plate and the follower cover plate. When the sliding part moves to the rear end of the jacking guide rail, the sliding part disengages from the relative driving part. At this time, the active cover plate has rotated a certain angle. The driving part only needs a smaller driving force to drive the active cover plate to continue to rotate through the connecting rod, and the jacking part returns to its original position due to gravity. At the same time, the sliding part returns to the front end of the jacking guide rail.

[0008] In an improved solution, the lifting member includes a lifting rod and a transfer rod. The lifting rod is connected to the frame along a vertical sliding manner, and the upper end of the lifting rod is toward the intersection position of the active cover plate and the follower cover plate. The lower end of the transfer rod is rotatably connected to the sliding member and the upper end is rotatably connected to the lifting rod, thereby ensuring that when the sliding member slides from front to back along the lifting guide rail, the transfer rod can drive the lifting rod to rise vertically, thereby achieving a better upward push on the intersection position of the active cover plate and the follower cover plate.

[0009] In an improved solution, the sliding member includes a block, a limit bar and a limit spring, the block is provided with a sliding connection portion that is slidably connected to the jacking guide rail, the rear portion of the limit bar is rotatably connected to the lower side of the block by a transfer pin and the axis of the transfer pin is along the left and right directions, the upper end of the limit spring is connected to the block and the lower end is connected to the front of the limit bar, when the limit spring is extended, the front end of the limit bar is lower than the driving part, and when the limit spring is compressed, the front end of the limit bar is higher than the driving part, so that when the driving part of the linear actuator resets forward, the driving part pushes the front end of the limit bar to rotate upward, and the compression of the limit spring makes the limit bar make space to avoid interference with the driving part. After the driving part moves to the front of the limit bar, the limit spring drives the front end of the limit bar to rotate downward again, so as to abut the next time the driving part moves forward.

[0010] In an improved solution, the front portion of the limiting strip has a bent portion that gradually bends downward from the back to the front, and the bent portion can provide more stable abutment for the driving portion.

[0011] In an improved solution, the transmission member further includes a return spring, one end of which is connected to the frame and the other end acts on the sliding member and applies a forward force to the sliding member, thereby helping the sliding member to return forward through the return spring.

[0012] In an improved solution, the linear drive includes a screw, a motor and a screw base. The screw base is the driving part. The screw is rotatably connected to the frame and its axis is along the front-to-back direction. The motor is used to drive the screw to rotate. The screw base is screwed to the screw and is driven by the screw to move forward and backward. The operation is reliable and stable.

[0013] In an improved solution, when the adapter is located at the front end of the guide rail, the active cover plate and the follower cover plate are in a flush state, and the front part of the guide rail has an inclined section that gradually bends upward from front to back. Since the inclined section gradually bends upward from front to back, the adapter will be subjected to an oblique upward force applied by the inclined section when moving backward from the front end of the guide rail, which helps the active cover plate to transform from a flush state to a folded state.

[0014] In an improved solution, the frame has a fixed supporting cover plate, which is located behind the follower cover plate. The rear side of the follower cover plate is rotatably connected to the front side of the supporting cover plate. When the adapter moves to the rear end of the guide rail, the active cover plate and the follower cover plate are folded onto the supporting cover plate, thereby forming a three-fold structure of the active cover plate, the follower cover plate and the supporting cover plate, which can cover a larger area. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 An overall diagram of an electric folding frame Figure 1 ; Figure 2 It is a top view schematic diagram of an electric folding stand; Figure 3 An overall diagram of an electric folding frame Figure 2 (The housing of the linear actuator is hidden); Figure 4 For the Figure 2 Schematic cross-sectional view of the AA section line; Figure 5 for Figure 3 A partial enlarged schematic diagram of area B in the middle; Figure 6 for Figure 4 A partial enlarged schematic diagram of the middle C area.

[0016] Description of reference numerals: 1. Frame; 11. Active cover; 111. Adapter; 12. Follower cover; 13. Support cover; 14. Guide rail; 14a. Inclined section; 15. Housing; 2. Linear drive; 21. Screw; 22. Motor; 23. Screw stage; 3. Connecting rod; 4. Transmission member; 41. Lifting rail; 42. Sliding member; 421. Block; 421a. Sliding portion; 421b. Mounting portion; 422. Limiting strip; 422a. Adapter pin; 422b. Bending portion; 423. Limiting spring; 5. Lifting member; 51. Push rod; 52. Adapter rod; 6. Return spring. DETAILED DESCRIPTION

[0017] It should be understood by those skilled in the art that the following embodiments are merely intended to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific applications.

[0018] In the following descriptions of the embodiments, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0019] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] See also Figures 1-6 , an embodiment of the present invention provides an electric folding stand, comprising: The frame 1 includes an active cover plate 11 and a follower cover plate 12 arranged side by side. The follower cover plate 12 is rotatably connected to the frame 1 at its rear side and is rotatably connected to the rear side of the active cover plate 11 at its front side. The active cover plate 11 is provided with a transition portion 111 at its front side. The frame 1 is provided with a guide rail 14 extending from front to rear. The transition portion 111 slidably engages with the guide rail 14. When the transition portion 111 moves from front to rear along the guide rail 14, the active cover plate 11 and the follower cover plate 12 change from an unfolded state to a folded state. The driving mechanism includes a connecting rod 3 and a linear actuator 2. The linear actuator 2 has a driving portion that can reciprocate in the front-back direction. One end of the connecting rod 3 is rotatably connected to the driving portion and the other end is rotatably connected to the adapter 111. The lifting mechanism includes a transmission member 4 and a lifting member 5. The transmission member 4 is located above the front of the linear drive 2. The lower end of the lifting member 5 is connected to the transmission member 4 and the upper end is directed toward the intersection of the active cover plate 11 and the follower cover plate 12. When the adapter 111 moves from front to back along the guide rail 14, the transmission member 4 is pushed by the driving part to push the lifting member 5 upward, so that the lifting member 5 applies an upward thrust to the intersection of the active cover plate 11 and the follower cover plate 12.

[0022] Compared with the prior art, the above scheme adds a lifting mechanism. When the driving part of the linear actuator 2 moves from front to back, on the one hand, the connecting rod 3 will drive the adapter 111 backward, that is, the active cover plate 11 is subjected to a backward force. On the other hand, the transmission part 4 of the lifting mechanism is pushed by the driving part to push the lifting part 5 upward, so that the lifting part 5 applies an upward thrust to the intersection position of the active cover plate 11 and the follower cover plate 12. At this time, the active cover plate 11 can be more easily rotated and folded relative to the follower cover plate 12, so that the linear actuator 2 only needs a smaller driving force to pass through the dead zone state, effectively reducing the power required by the linear actuator 2, and the lifting part 5 is pushed upward by the action of the linear actuator 2 of the driving mechanism, without the need to add another power source, which is conducive to the overall miniaturization.

[0023] like Figure 1 As shown, in this embodiment, the frame 1 is concave in shape and its opening faces forward, the active cover plate 11 and the follower cover plate 12 are respectively located at the front and middle of the frame 1, and the guide rail 14, the driving mechanism and the lifting mechanism are all located on the right side of the frame 1.

[0024] In this embodiment, the linear actuator 2 includes a screw 21, a motor 22, and a screw base 23. The screw base 23 is the driving unit. The screw 21 is rotatably connected to the frame 1, with its axis extending in the fore-aft direction. The motor 22 is used to drive the screw 21 to rotate. The screw base 23 is screwed to the screw 21 and is driven by the screw 21 to move forward and backward, resulting in reliable and stable operation. Of course, the linear actuator 2 can also be other devices, such as a cylinder arranged in the fore-aft direction. In this case, the driving unit is the end of the cylinder rod.

[0025] In this embodiment, the adapter 111 is a short axis-shaped structure protruding from the right side of the active cover plate 11. When the adapter 111 is located at the front end of the guide rail 14, the active cover plate 11 and the follower cover plate 12 are in a flush state. The front part of the guide rail 14 has an inclined section 14a that gradually bends upward from front to back. Since the inclined section 14a gradually bends upward from front to back, the adapter 111 will be subjected to an oblique upward force exerted by the inclined section 14a when it moves backward from the front end of the guide rail 14, which helps the active cover plate 11 to change from a flush state to a folded state.

[0026] Furthermore, the rear part of the frame 1 has a fixed supporting cover plate 13, which is located behind the follower cover plate 12. The rear side of the follower cover plate 12 is rotatably connected to the front side of the supporting cover plate 13. When the adapter 111 moves to the rear end of the guide rail 14, the active cover plate 11 and the follower cover plate 12 are folded onto the supporting cover plate 13, thereby forming a three-fold structure of the active cover plate 11, the follower cover plate 12 and the supporting cover plate 13, which can cover a larger area.

[0027] In this embodiment, the frame 1 includes a shell 15 on the right side, and the lifting mechanism is installed inside the shell 15. The transmission member 4 includes a lifting guide rail 41 and a sliding member 42. The lifting guide rail 41 is arranged in the shell 15 of the frame 1 from front to back, and the rear end of the lifting guide rail 41 is higher than the front end. The sliding member 42 is slidably connected to the lifting guide rail 41, and the sliding member 42 is connected to the lifting member 5. When the sliding member 42 is located at the front end of the lifting guide rail 41, the lower end of the sliding member 42 is lower than the high point of the screw platform 23, and the lifting member 5 is in a low position; when the sliding member 42 is located at the rear end of the lifting guide rail 41, the lower end of the sliding member 42 is higher than the high point of the screw platform 23, and the lifting member 5 is pushed upward by the sliding member 42, so that during the movement of the screw platform 23 from front to back, In the process, the sliding member 42 at the front end of the jacking guide rail 41 is first in contact with the screw platform 23 and moves backward under the drive of the screw platform 23. At this time, the jacking member 5 gradually rises from the low position and applies an upward thrust to the junction of the active cover plate 11 and the follower cover plate 12. When the sliding member 42 moves to the rear end of the jacking guide rail, the sliding member 42 disengages from the screw platform 23. At this time, the active cover plate 11 has rotated a certain angle, and the screw platform 23 only needs a smaller driving force to drive the active cover plate 11 to continue to rotate through the connecting rod 3. The jacking member 5 is reset downward due to gravity, and the sliding member 42 is reset to the front end of the jacking guide rail 41.

[0028] The lifting member 5 includes a lifting rod 51 and a transfer rod 52. A vertical sliding hole is opened on the upper side of the shell 15 of the frame 1. The lifting rod 51 is connected to the sliding hole along the vertical sliding, and the upper end of the lifting rod 51 is toward the intersection of the active cover plate 11 and the follower cover plate 12. The lower end of the transfer rod 52 is rotatably connected to the sliding member 42 and the upper end is rotatably connected to the lifting rod 51, so as to ensure that when the sliding member 42 slides from front to back along the lifting guide rail 41, the transfer rod 52 can drive the lifting rod 51 to rise vertically, thereby achieving a better upward push on the intersection of the active cover plate 11 and the follower cover plate 12.

[0029] The sliding member 42 includes a block 421, a limit bar 422 and a limit spring 423. The block 421 is provided with a sliding portion 421a that is slidably connected to the jacking guide rail 41. In this embodiment, the sliding portion 421a is hole-shaped, and a mounting portion 421b is provided on the lower side of the block 421. In this embodiment, the mounting portion 421b is a groove opened from front to back, and the bottom of the groove is the lower side of the block 421. The rear part of the limit bar 422 is rotatably connected to the groove on the lower side of the block 421 through the transfer pin 422a, and the axis of the transfer pin 422a is along the left and right direction. The upper end of the limit spring 423 is connected to the block 421 and the lower end is connected to When the screw platform 23 is moved forward, the front end of the limit bar 422 is rotated upward, and the limit spring 423 is compressed to make space for the limit bar 422 to avoid interfering with the screw platform 23. After the screw platform 23 moves to the front of the limit bar 422, the limit spring 423 drives the front end of the limit bar 422 to rotate downward again, so as to abut against the screw platform 23 when the screw platform 23 moves forward next time.

[0030] In an improved solution, the front portion of the limiting strip 422 has a bent portion 422b that gradually extends downward from the back to the front, and the bent portion 422b can provide a more stable abutment for the screw platform.

[0031] As an improvement to this embodiment, the transmission member 4 also includes a return spring 6, the front end of the return spring 6 is connected to the front side of the shell 15 of the frame 1, and the rear end of the return spring 6 is connected to the sliding member 42 and applies a forward force to the sliding member 42, thereby helping the sliding member 42 to reset forward through the return spring 6.

[0032] It should be noted that, in the description of this application, the terms "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application. All directional indications (such as up, down, left, right, front, back, inside and outside) are only used to explain the relative positional relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0033] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0034] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An electric folding stand, characterized in that: include: A frame (1), and an active cover plate (11) and a follower cover plate (12) arranged side by side, wherein the rear side of the follower cover plate (12) is rotationally connected to the frame (1) and the front side is rotationally connected to the rear side of the active cover plate (11), the front side of the active cover plate (11) is provided with a transition portion (111), the frame (1) is provided with a guide rail (14) from front to back, the transition portion (111) is slidably engaged with the guide rail (14), and when the transition portion (111) moves from front to back along the guide rail (14), the active cover plate (11) and the follower cover plate (12) change from an unfolded state to a folded state; A driving mechanism comprising a connecting rod (3) and a linear driver (2), wherein the linear driver (2) has a driving portion that can reciprocate in a front-back direction, one end of the connecting rod (3) is rotatably connected to the driving portion and the other end is rotatably connected to the adapter portion (111); The lifting mechanism comprises a transmission member (4) and a lifting member (5), wherein the transmission member (4) is located above the front of the linear drive (2), the lower end of the lifting member (5) is connected to the transmission member (4) and the upper end faces the intersection position of the active cover plate (11) and the follower cover plate (12), and when the adapter (111) moves from front to back along the guide rail (14), the transmission member (4) is pushed by the driving part to push the lifting member (5) upward, so that the lifting member (5) applies an upward thrust to the intersection position of the active cover plate (11) and the follower cover plate (12).

2. The electric folding stand according to claim 1, characterized in that: The transmission member (4) includes a lifting guide rail (41) and a sliding member (42), wherein the lifting guide rail (41) is arranged on the frame (1) from front to back and the rear end of the lifting guide rail (41) is higher than the front end, and the sliding member (42) is slidably connected to the lifting guide rail (41), and the sliding member (42) is connected to the lifting member (5), when the sliding member (42) is located at the front end of the lifting guide rail (41), the lower end of the sliding member (42) is lower than the driving part, and the lifting member (5) is in a low position; when the sliding member (42) is located at the rear end of the lifting guide rail (41), the lower end of the sliding member (42) is higher than the driving part, and the lifting member (5) is pushed upward by the sliding member (42).

3. The electric folding stand according to claim 2, characterized in that: The lifting member (5) includes a lifting rod (51) and a transfer rod (52), wherein the lifting rod (51) is connected to the frame (1) in a vertical sliding manner, and the upper end of the lifting rod (51) faces the intersection position of the active cover plate (11) and the follower cover plate (12), and the lower end of the transfer rod (52) is rotatably connected to the sliding member (42) and the upper end is rotatably connected to the lifting rod (51).

4. The electric folding stand according to claim 2, characterized in that: The sliding member (42) includes a block (421), a limit bar (422) and a limit spring. The block (421) is provided with a sliding portion (421a) slidably connected to the jacking guide rail (41). The rear portion of the limit bar (422) is rotatably connected to the lower side of the block (421) through a transfer pin (422a), and the axis of the transfer pin (422a) is along the left-right direction. The upper end of the limit spring is connected to the block (421) and the lower end is connected to the front portion of the limit bar (422). When the limit spring is extended, the front end of the limit bar (422) is lower than the driving portion. When the limit spring is compressed, the front end of the limit bar (422) is higher than the driving portion.

5. The electric folding stand according to any one of claims 2 to 4, characterized in that: The front portion of the limiting strip (422) has a bending portion (422b) that gradually extends downward from the back to the front.

6. The electric folding stand according to any one of claims 2 to 5, characterized in that: The transmission member (4) further comprises a return spring (6), one end of which is connected to the frame (1) and the other end of which acts on the sliding member (42) and applies a forward force to the sliding member (42).

7. The electric folding stand according to claim 1, characterized in that: The linear drive (2) comprises a screw rod (21), a motor (22) and a screw base (23), wherein the screw base (23) is a driving part, the screw rod (21) is rotatably connected to the frame (1) and its axis is along the front-back direction, the motor (22) is used to drive the screw rod (21) to rotate, and the screw base (23) is screwed to the screw rod (21) and is driven by the screw rod (21) to move forward and backward.

8. The electric folding stand according to claim 1, characterized in that: When the transition portion (111) is located at the front end of the guide rail (14), the active cover plate (11) and the follower cover plate (12) are in a flush state, and the front portion of the guide rail (14) has an inclined section (14a) that gradually bends upward from front to back.

9. The electric folding stand according to claim 1 or 8, characterized in that: The frame (1) has a fixed support cover (13), the support cover (13) is located behind the follower cover (12), the rear side of the follower cover (12) is rotatably connected to the front side of the support cover (13), and when the adapter (111) moves to the rear end of the guide rail (14), the active cover (11) and the follower cover (12) are folded onto the support cover (13).

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