Foldable labor-saving cover plate

Abstract

The utility model relates to the technical field of cover plate, especially a folding labor-saving cover plate, including sheet metal frame, first hinge block that sets up on sheet metal frame, first cover plate that rotates and sets up first hinge block top, and counterweight hammer that rotates and sets up first hinge block bottom, first gear is equipped with in first cover plate and first hinge block junction, counterweight hammer and first hinge block junction are equipped with second gear, first gear and second gear are engaged, wherein through second gear and first gear and first cover plate engagement, when first cover plate is pulled up, counterweight hammer and first cover plate keep symmetrical state counterweight hammer will rotate downward under the action of gravity, and assist first cover plate to rotate, first cover plate is more labor-saving when rotating and standing up, compared with the original structure, and the cover plate will be more labor-saving to pull up, solve the problem that the existing size big telescopic framework weight is heavy, and needs manual to pull up telescopic framework when using, lead to the problem of manual pulling up laborious.

Description

Technical Field

[0001] This utility model relates to the field of cover plate technology, and in particular to a folding, labor-saving cover plate. Background Technology

[0002] Currently, Chinese Patent Publication No. CN115162918B discloses an openable lifting port cover and its working method, including a support frame, a cover plate rotatably disposed on both sides of the support frame, and a telescopic frame rotatably disposed on both sides of the cover plate in the vertical direction on the support frame. The telescopic frame includes a first connecting rod hinged to the support frame and a telescopic frame connected to the first connecting rod. The telescopic frame includes a first hinge rod hinged to one longitudinal side of the first connecting rod, a long rod disposed on the other longitudinal side of the first connecting rod, a hinge plate disposed on the side of the first hinge rod opposite to the first connecting rod, a second hinge rod disposed on the side of the hinge plate opposite to the first hinge rod, and a second connecting rod. The two longitudinal sides of the second connecting rod are rotatably connected to the long rod and the second connecting rod, respectively. The middle part of the long rod is rotatably connected to the hinge plate. However, the existing large telescopic frame is heavy, and manual lifting of the telescopic frame is required during use, which is laborious. Utility Model Content

[0003] Therefore, in response to the above problems, this utility model proposes a folding labor-saving cover plate, which solves the technical problem that the existing large telescopic frame is heavy and requires manual lifting of the telescopic frame during use, resulting in laborious manual lifting.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a folding labor-saving cover plate, including a sheet metal frame, a first hinge block disposed on the sheet metal frame, a first cover plate rotatably disposed on the top of the first hinge block, and a counterweight hammer rotatably disposed on the bottom of the first hinge block. A first gear is provided at the connection between the first cover plate and the first hinge block, and a second gear is provided at the connection between the counterweight hammer and the first hinge block. The first gear and the second gear mesh with each other.

[0005] Furthermore, the first cover plate is provided with a folding hinge at its top, and the first cover plate is rotatably connected to a second cover plate through the folding hinge. The inner side of the sheet metal frame is provided with an inner protrusion for the first cover plate and the second cover plate to close on their front and rear sides.

[0006] Furthermore, the second cover plate is rotatably connected to pulleys on both the front and rear sides, which are slidably connected to the inner protrusion.

[0007] Furthermore, the folding hinge includes a second hinge block disposed at the bottom of the second cover plate, and a connecting plate rotatably disposed on the second hinge block and connected to the second cover plate, wherein the connecting plate is in contact with the bottom surface of the second cover plate and a side surface near the second cover plate.

[0008] Furthermore, a stepped recess is provided between the top surface of the sheet metal frame and the inner protrusion, and a side guardrail is provided at the stepped recess of the sheet metal frame.

[0009] Furthermore, a first perforated plate is provided in the middle of the top surface of the first cover plate and the second cover plate. After the side guardrail covers the top surface of the first cover plate and the second cover plate, it covers the area outside the first perforated plate.

[0010] Furthermore, the sheet metal frame is provided with a second perforated plate for covering the space between the edge of the sheet metal frame and the first cover plate.

[0011] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0012] This folding, labor-saving cover plate utilizes a counterweight. The counterweight is located at the bottom of the first cover plate and meshes with it via a second gear and a first gear. When the first cover plate is pulled upwards, the counterweight maintains a symmetrical position with the first cover plate. Under gravity, the counterweight rotates downwards, assisting the first cover plate in rotating upwards. This makes it easier to lift the first cover plate. After the first cover plate stands upright on the sheet metal frame, the counterweight also stands upright at the bottom of the sheet metal frame. When the first cover plate needs to be closed, pushing it forward causes the counterweight to rotate upwards, assisting in closing the cover plate. Compared to the original structure, lifting the cover plate requires significantly less effort. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a front view schematic diagram of the structure of this utility model;

[0015] Figure 3 This is a partial front view schematic diagram of the structure of this utility model;

[0016] Figure 4 This is a partial structural schematic diagram of the present invention;

[0017] Figure 5 This is a partially enlarged structural schematic diagram of the present invention;

[0018] Figure 6 This is a schematic diagram of the first and second cover plates of this utility model in use.

[0019] Figure 7 This is a schematic diagram of the structure of the first cover plate and the second cover plate of this utility model in the closed state. Detailed Implementation

[0020] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0021] refer to Figures 1 to 7This embodiment provides a folding labor-saving cover plate, including a sheet metal frame 1, a first hinge block 2 disposed on the sheet metal frame 1, a first cover plate 3 rotatably disposed on the top of the first hinge block 2, and a counterweight 4 rotatably disposed on the bottom of the first hinge block 2. A first gear 5 is provided at the connection between the first cover plate 3 and the first hinge block 2, and a second gear 6 is provided at the connection between the counterweight 4 and the first hinge block 2. The first gear 5 and the second gear 6 mesh with each other.

[0022] With the counterweight 4 positioned at the bottom of the first cover plate 3 and meshing with it via the second gear 6 and the first gear 5, the counterweight 4 maintains a symmetrical state with the first cover plate 3 when the first cover plate 3 is pulled up. Under the influence of gravity, the counterweight 4 rotates downwards to assist the first cover plate 3 in rotating upwards, making it easier to lift the first cover plate 3. After the first cover plate 3 stands upright on the sheet metal frame 1, the counterweight 4 will also stand upright at the bottom of the sheet metal frame 1. When the first cover plate 3 needs to be closed, push the first cover plate 3 forward, and the counterweight 4 will rotate upwards to assist the first cover plate 3 in closing. Compared with the original structure, it is easier to lift the cover plate.

[0023] The first cover plate 3 is provided with a folding hinge 7 at its top. The first cover plate 3 is rotatably connected to a second cover plate 8 through the folding hinge 7. The inner side of the sheet metal frame 1 is provided with an inner protrusion 9 for the first cover plate 3 and the second cover plate 8 to cover each other on the front and rear sides.

[0024] When the first cover plate 3 is pushed forward to cover the sheet metal frame 1, the folding hinge 7 will automatically unfold and flatten the first cover plate 3 and the second cover plate 8 under the action of the folding hinge 7; when the first cover plate 3 is pulled up, the second cover plate 8 will be folded and attached to one side of the first cover plate 3 through the folding hinge 7.

[0025] The second cover plate 8 is rotatably connected to pulleys 10 on both the front and rear sides, which are slidably connected to the inner protrusion 9. During the movement and rotation of the second cover plate 8, the pulleys 10 on both sides are always in contact with the top surface of the inner protrusion 9 of the sheet metal frame 1. The second cover plate 8 contacts the sheet metal frame 1 through the pulleys 10. Pushing the second cover plate 8 has low resistance, and the small and medium-sized cover plate can be automatically unfolded through the folding hinge 7. Compared with the original telescopic frame, it is more labor-saving and the installation is faster and more convenient.

[0026] The folding hinge 7 includes a second hinge block 701 disposed at the bottom of the second cover plate 8, and a connecting plate 702 rotatably disposed on the second hinge block 701 and connected to the second cover plate 8. The connecting plate 702 is in contact with the bottom surface of the second cover plate 8 and a side surface near the second cover plate 8.

[0027] After the first cover plate 3 and the second cover plate 8 are unfolded parallel, one side of the connecting plate 702 is connected to the second hinge block 701, and the other side is located in the gap between the first cover plate 3 and the second cover plate 8. The bottom surface of the second cover plate 8 and the side closest to the second cover plate 8 are in contact. This structure is stable and safe, and provides good support for the second cover plate 8.

[0028] A stepped recess 11 is provided between the top surface of the sheet metal frame 1 and the inner protrusion 9, and a side guardrail 12 is provided at the stepped recess 11 of the sheet metal frame 1.

[0029] When the first cover plate 3 and the second cover plate 8 are closed on the sheet metal frame 1, the top surfaces of the first cover plate 3 and the second cover plate will be parallel to the top surface of the inner protrusion 9, and the height of the stepped recess 11 will be higher than that of the inner protrusion 9. At this time, the flip side guardrail 12 will be closed on the stepped recess 11, the first cover plate 3 and the second cover plate 8.

[0030] The side guardrail 12 is connected to the sheet metal frame 1. After covering the top surface of the first cover plate 3 and the second cover plate 8, it can enhance the load-bearing performance of the first cover plate 3 and the second cover plate 8, and further enhance the safety during use.

[0031] A first perforated plate 13 is provided in the middle of the top surface of the first cover plate 3 and the second cover plate 8. After the side guardrail 12 covers the top surface of the first cover plate 3 and the second cover plate 8, it covers the area outside the first perforated plate 13.

[0032] After the side guardrail 12 covers the top surface of the first cover plate 3 and the second cover plate 8, the first perforated plate 13 is parallel to the top surface of the side guardrail 12. The first perforated plate 13, the side guardrail 12 and the second perforated plate 14 will cover the top surface of the sheet metal frame 1, which is aesthetically pleasing and safe to use.

[0033] The sheet metal frame 1 is provided with a second perforated plate 14 for covering the space between the edge of the sheet metal frame 1 and the first cover plate 3.

[0034] Since the first cover plate 3 is connected to the sheet metal frame 1 through the first hinge block 2, after the first cover plate 3 is closed on the sheet metal frame 1, there will be a gap between the first cover plate 3 at the position of the first hinge block 2 and the sheet metal frame 1. The gap is covered by the second perforated plate 14.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A folding, labor-saving cover plate, characterized in that, It includes a sheet metal frame (1), a first hinge block (2) disposed on the sheet metal frame (1), a first cover plate (3) rotatably disposed on the top of the first hinge block (2), and a counterweight (4) rotatably disposed on the bottom of the first hinge block (2). A first gear (5) is provided at the connection between the first cover plate (3) and the first hinge block (2), and a second gear (6) is provided at the connection between the counterweight (4) and the first hinge block (2). The first gear (5) and the second gear (6) mesh with each other.

2. The folding, labor-saving cover plate according to claim 1, characterized in that: The first cover plate (3) is provided with a folding hinge (7) at the top. The first cover plate (3) is rotatably connected to a second cover plate (8) through the folding hinge (7). The inner side of the sheet metal frame (1) is provided with an inner protrusion (9) for the first cover plate (3) and the second cover plate (8) to cover the front and rear sides.

3. A folding, labor-saving cover plate according to claim 2, characterized in that: The second cover plate (8) is rotatably connected to pulleys (10) that are slidably connected to the inner protrusion (9) on both the front and rear sides.

4. A folding, labor-saving cover plate according to claim 3, characterized in that: The folding hinge (7) includes a second hinge block (701) disposed at the bottom of the second cover plate (8) and a connecting plate (702) rotatably disposed on the second hinge block (701) and connected to the second cover plate (8). The connecting plate (702) is in contact with the bottom surface of the second cover plate (8) and a side surface near the second cover plate (8).

5. A folding, labor-saving cover plate according to claim 3, characterized in that: A stepped recess (11) is provided between the top surface of the sheet metal frame (1) and the inner protrusion (9), and a side guardrail (12) is provided at the stepped recess (11) of the sheet metal frame (1).

6. A folding, labor-saving cover plate according to claim 5, characterized in that: The first cover plate (3) and the second cover plate (8) are provided with a first perforated plate (13) in the middle of their top surfaces. After the side guardrail (12) covers the top surfaces of the first cover plate (3) and the second cover plate (8), it covers the area outside the first perforated plate (13).

7. A folding, labor-saving cover plate according to claim 6, characterized in that: The sheet metal frame (1) is provided with a second perforated plate (14) for covering the space between the edge of the sheet metal frame (1) and the first cover plate (3).

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