Lifting cabinet

Abstract

A lifting cabinet comprises a fixed cabinet body and a movable cabinet body, the fixed cabinet body and the movable cabinet body are connected through a lifting mechanism, the lifting mechanism comprises a base installed in the fixed cabinet body, the base is connected with a sliding plate through a guide device, and the sliding plate slides front and back relative to the base; a first swing arm and a second swing arm are installed on the sliding plate in a hinged mode, and the other end of the first swing arm and the other end of the second swing arm are hinged to the movable cabinet. A driving arm is further installed on the sliding plate in a hinged mode, a linkage device is arranged at the other end of the driving arm and connected with the base, and the sliding plate has the advantage that the hinged point of the first swing arm and the second swing arm can move front and back along with movement of the sliding plate. By means of the design, interference between the bottom of the movable cabinet and the bottom of the fixed cabinet can be avoided, and it can be guaranteed that the movable cabinet can move more stably and flexibly during lifting. The bottom of the movable cabinet can be better attached to the fixed cabinet by adjusting the position of the hinge point, and therefore the gap between the movable cabinet and the fixed cabinet is obviously reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen cabinets, and specifically to a lifting cabinet. Background Art

[0002] With the continuous improvement of people's requirements for space utilization rate, various furniture with flexible storage functions have gradually entered the market. Among them, the lifting cabinet, as a kind of furniture that realizes the functions of storage and item retrieval through the lifting method, has been widely used. Existing lifting cabinets usually connect a movable cabinet and a fixed cabinet through a lifting mechanism and realize the lifting movement of the movable cabinet. However, in the prior art, a four-bar linkage structure is generally adopted as the lifting mechanism to connect the fixed cabinet and the movable cabinet. Although this design can realize the lifting movement of the movable cabinet, there are some significant drawbacks in practical applications.

[0003] For example, the four-bar linkage structure in the prior art usually uses fixed hinge points and realizes the lifting function of the movable cabinet through the movement of four linkages. However, there is an obvious problem in the use of this structure: since the hinge points are fixed, in order to ensure that the movable cabinet can avoid the bottom of the fixed cabinet during the lifting process, the length of the linkages must be relatively long, so that there must be a certain gap between the bottom of the movable cabinet after it is closed and the fixed cabinet. Although this design can solve the collision problem between the movable cabinet and the fixed cabinet, it also leads to a non-negligible problem of space waste.

[0004] Specifically, when the movable cabinet is closed, the bottom gap between the fixed cabinet and the movable cabinet is relatively large, and this gap cannot be effectively utilized, resulting in space waste. Especially in occasions where space is tight or there are high requirements for space utilization, the existence of this gap becomes a drawback in the design. Although the existing four-bar linkage structure can realize the movement of the movable cabinet, it cannot fully optimize the space layout, thus affecting the practicability and space utilization efficiency of the lifting cabinet. Therefore, it is necessary to make further improvements to it. Summary of the Invention

[0005] The purpose of the present invention is to overcome the drawbacks of the prior art and provide a lifting cabinet with a simple structure, convenient use, which can ensure the movement function and stability of the lifting cabinet while reducing the gap between the movable cabinet and the fixed cabinet and improving the space utilization rate.

[0006] The purpose of the present invention is realized in the following way: A lifting cabinet includes a fixed cabinet and a movable cabinet. The fixed cabinet and the movable cabinet are connected through a lifting mechanism, and the lifting mechanism drives the movable cabinet to move relative to the fixed cabinet, so as to realize that the movable cabinet is stored into the fixed cabinet or is moved out downward from the fixed cabinet. The lifting mechanism includes a base installed in the fixed cabinet. The base is connected with a sliding plate through a guiding device, and the sliding plate slides back and forth relative to the base. A first swing arm and a second swing arm are hingedly mounted on the sliding plate, and the other ends of the first swing arm and the second swing arm are hinged to the movable cabinet. A drive arm is also hingedly mounted on the sliding plate. A linkage device is provided at the other end of the drive arm and is connected to the base. An outer guide groove is provided on the drive arm, and an inner guide groove is provided on the sliding plate. A guide post is provided on the first swing arm and extends into the outer guide groove after passing through the inner guide groove. When the first swing arm swings, the sliding plate is driven to slide relative to the base by the extrusion of the guide post with the inner guide groove and the outer guide groove.

[0007] Further: Two sets of lifting mechanisms are provided and are respectively installed between the two inner side walls of the fixed cabinet and the two outer side walls of the movable cabinet.

[0008] Further: The guiding device is a linear guide rail installed on the inner side wall of the base, and a plurality of guiding wheels on the outer side wall of the sliding plate extend into the linear guide rail and slide back and forth.

[0009] Further: The guiding device is a sliding groove provided on the base, and a guiding wheel is correspondingly provided on the sliding plate and extends into the sliding groove to slide.

[0010] Further: The sliding groove is arranged in a "C" shape with higher sides and lower middle.

[0011] Further: The inner guide groove is provided with a C-shaped groove around the hinge point of the first swing arm and the sliding plate, and the C-shaped groove penetrates through the sliding plate.

[0012] Further: The outer guide groove is an "S" - shaped groove penetrating through the drive arm.

[0013] Further: The linkage device is a linkage rod hingedly mounted on the sliding plate, and the other end of the linkage rod is hinged to the drive arm.

[0014] Further: The linkage device is a linkage track provided on the sliding plate, and a linkage pulley is provided on the drive arm and extends into the linkage track to slide.

[0015] The beneficial effects of the present invention are: 1. Simple structure, low production cost, and improved market competitiveness.

[0016] The hinge point of the first swing arm and the second swing arm can move back and forth with the movement of the sliding plate. This design can not only avoid the interference between the bottom of the movable cabinet and the bottom of the fixed cabinet, but also ensure that the movable cabinet can move more smoothly and flexibly during lifting. By adjusting the position of the hinge point, the bottom of the movable cabinet can fit the fixed cabinet more closely, thus significantly reducing the gap between the two.

[0017] 3. This design of the articulation point that can be adjusted back and forth greatly improves the space utilization rate. When the movable cabinet is closed, the gap between the bottom and the fixed cabinet is reduced, thus making more effective use of the limited space. Especially in an environment where space is relatively tight, it can significantly enhance the usage efficiency of the lifting cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 、 2 FIG. is a schematic diagram showing the opening process of the movable cabinet according to the first embodiment of the present invention.

[0019] Figure 3 FIG. is a schematic structural diagram of the movable cabinet after being closed according to the first embodiment of the present invention.

[0020] Figure 4 FIG. is a schematic structural diagram after hiding the fixed cabinet in the first embodiment of the present invention.

[0021] Figure 5 FIG. is an exploded view of the structure according to the first embodiment of the present invention.

[0022] Figure 6 、 7 FIG. is a schematic diagram showing the opening process of the movable cabinet according to the second embodiment of the present invention.

[0023] Figure 8 FIG. is a schematic structural diagram after hiding the fixed cabinet in the second embodiment of the present invention.

[0024] Figure 9 FIG. is an exploded view of the structure according to the second embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present invention will be further described in detail below with reference to the accompanying drawings. A lifting cabinet includes a fixed cabinet 1 and a movable cabinet 2. The fixed cabinet 1 and the movable cabinet 2 are connected by a lifting mechanism. The lifting mechanism drives the movable cabinet 2 to move relative to the fixed cabinet 1, so that the movable cabinet 2 can be received into the fixed cabinet 1 or be moved out downward from the fixed cabinet 1; The lifting mechanism includes a base 3 installed in the fixed cabinet 1. The base 3 is connected to a sliding plate 4 through a guiding device, and the sliding plate 4 slides back and forth relative to the base 3; A first swing arm 5 and a second swing arm 6 are hingedly installed on the sliding plate 4, and the other ends of the first swing arm 5 and the second swing arm 6 are hinged to the movable cabinet 2; A drive arm 7 is also hingedly installed on the sliding plate 4. The other end of the drive arm 7 is provided with a linkage device connected to the base 3. An outer guide groove 71 is provided on the drive arm 7, and an inner guide groove 41 is provided on the sliding plate 4. A guide post 51 is provided on the first swing arm 5 and extends into the outer guide groove 71 after passing through the inner guide groove 41. When the first swing arm 5 swings, the sliding plate 4 is driven to slide relative to the base 3 by the extrusion of the guide post 51 with the inner guide groove 41 and the outer guide groove 71.

[0026] In one embodiment: Two sets of the lifting mechanisms are provided and are respectively installed between the two inner side walls of the fixed cabinet 1 and the two outer side walls of the movable cabinet 2.

[0027] In one embodiment: The guiding device is a linear guide rail 31 installed on the inner side wall of the base 3, and a plurality of guide wheels 42 on the outer side wall of the sliding plate 4. The guide wheels 42 extend into the linear guide rail 31 and slide back and forth.

[0028] In one embodiment: The guiding device is a sliding groove 32 provided on the base 3, and a corresponding guide wheel 42 is provided on the sliding plate 4. The guide wheel 42 extends into the sliding groove 32 and slides.

[0029] In one embodiment: The sliding groove 32 is arranged in a "C" shape with higher sides and lower middle.

[0030] In one embodiment: The inner guide groove 41 is provided with a C-shaped groove around the hinge point of the first swing arm 5 and the sliding plate 4, and the C-shaped groove penetrates through the sliding plate 4.

[0031] In one embodiment: The outer guide groove 71 is an "S" - shaped groove penetrating through the drive arm 7.

[0032] In one embodiment: The linkage device is a linkage rod 43 hingedly installed on the sliding plate 4, and the other end of the linkage rod 43 is hinged to the drive arm 7.

[0033] In one embodiment: The linkage device is a linkage track 44 provided on the sliding plate 4, and a linkage pulley 72 is provided on the drive arm 7. The linkage pulley 72 extends into the linkage track 44 and slides.

[0034] Working principle: The lifting cabinet of the present invention realizes the lifting movement between the fixed cabinet and the movable cabinet through a set of innovative lifting mechanisms. The lifting mechanism mainly consists of a base, a sliding plate, a swing arm, a drive arm, a linkage device, etc.

[0035] Specifically: The lifting mechanism includes a base 3 installed inside the fixed cabinet. The base is connected to a sliding plate 4 through a guiding device, and the sliding plate 4 can slide back and forth relative to the base 3. When the lifting mechanism is activated, the driving arm 7 drives the sliding plate 4 to slide back and forth through a linkage device, such as a linkage rod or a linkage pulley, thereby driving the movable cabinet 2 to move back and forth in the horizontal direction of the fixed cabinet 1.

[0036] Specifically: A first swing arm 5 and a second swing arm 6 are hingedly installed on the sliding plate 4, and the other ends of both are hinged to the movable cabinet 2. When the sliding plate 4 moves back and forth, the first swing arm 5 and the second swing arm 6 drive the movable cabinet 2 to lift up and down. Particularly, the hinge points of the first swing arm 5 and the second swing arm 6 can move back and forth along with the movement of the sliding plate 4. This design enables the bottom of the movable cabinet to better avoid the bottom structure of the fixed cabinet during the lifting process, avoiding the problem of wasted gaps caused by the fixed hinge point design.

[0037] Among them, since the hinge points of the first swing arm and the second swing arm can move back and forth along with the sliding plate 4, when the movable cabinet 2 is lifted, its bottom can be perfectly avoided from the fixed cabinet 1. When the movable cabinet 2 is completely stored in the fixed cabinet 1, the bottom gap becomes very small, thus greatly improving the space utilization rate. Especially in an environment where a compact space design is required, the advantages of this structure are particularly prominent.

[0038] Among them, the driving arm 7 is connected to the base 3 through a linkage device. The outer guiding groove 71 on the driving arm cooperates with the inner guiding groove 41 on the sliding plate to ensure smooth movement between the sliding plate 4 and the base 3. The guiding column 51 is fixed on the first swing arm 5, passes through the inner guiding groove 41, and extends into the outer guiding groove 71, ensuring that when the first swing arm 5 swings, the sliding plate 4 is driven to slide relative to the base 3 through the extrusion of the guiding column 51 with the inner and outer guiding grooves. Thus, when the movable cabinet is lifted, it can also move horizontally back and forth relative to the fixed cabinet, enabling the bottom of the movable cabinet to avoid misalignment with the bottom of the fixed cabinet. Therefore, compared with the traditional four-link lifting mechanism, the first swing arm and the second swing arm in this case can be designed shorter, so that after the movable cabinet enters the fixed cabinet, the gap between its bottom and the fixed cabinet is smaller, thereby improving the space utilization rate.

[0039] Compared with the traditional technology, the present invention solves the problem of a large gap between the bottom of the movable cabinet and the fixed cabinet in the prior art by setting swing arm hinge points that can be adjusted back and forth. During the lifting process of the movable cabinet, the hinge points of the first swing arm and the second swing arm can be adjusted along with the back-and-forth movement of the sliding plate, so that the bottom of the movable cabinet can be more closely stored in the fixed cabinet, minimizing the gap to the greatest extent. This design significantly improves the space utilization rate, especially suitable for a compact space environment, reducing the problems caused by space waste.

[0040] Through the detailed description of the above working principle, it can be clearly seen that the present invention is not only innovative in the lifting function, but also greatly improves the space utilization efficiency through the design of the swing arm hinge points that can be adjusted back and forth, avoiding the common space waste problems in the prior art. These technical advantages make the present invention have broad application prospects and significant market value.

[0041] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the claims of the present invention.

Claims

1. A lifting cabinet, comprising a fixed cabinet (1) and a movable cabinet (2), characterized in that: The fixed cabinet (1) and the movable cabinet (2) are connected via a lifting mechanism, and the lifting mechanism drives the movable cabinet (2) to move relative to the fixed cabinet (1), so that the movable cabinet (2) can be stored in the fixed cabinet (1), or can be moved downward from the fixed cabinet (1); The lifting mechanism comprises a base (3) installed in the fixed cabinet (1), the base (3) is connected to the sliding plate (4) through a guide device, and the sliding plate (4) slides back and forth relative to the base (3); A first swing arm (5) and a second swing arm (6) are hingedly mounted on the sliding plate (4), and the other ends of the first swing arm (5) and the second swing arm (6) are hingedly connected to the movable cabinet (2); The sliding plate (4) is also hingedly mounted with a driving arm (7), the other end of the driving arm (7) is provided with a linkage device connected to the base (3), the driving arm (7) is provided with an outer guide groove (71), the sliding plate (4) is provided with an inner guide groove (41), and a guide column (51) is provided on the first swing arm (5) and passes through the inner guide groove (41) and then extends into the outer guide groove (71); when the first swing arm (5) swings, the sliding plate (4) is driven to slide relative to the base (3) through the extrusion of the guide column (51) and the inner guide groove (41) and the outer guide groove (71).

2. A lifting cabinet according to claim 1, characterized in that: The lifting mechanism is provided in two sets, which are respectively installed between the two inner side walls of the fixed cabinet (1) and the two outer side walls of the movable cabinet (2).

3. The lifting cabinet according to claim 1, characterized in that: The guide device is a linear guide rail (31) installed on the inner wall of the base (3), and a plurality of guide wheels (42) on the outer wall of the sliding plate (4). The guide wheels (42) extend into the linear guide rail (31) and slide back and forth.

4. The lifting cabinet according to claim 1, characterized in that: The guide device is a sliding groove (32) arranged on the base (3), and a guide wheel (42) is correspondingly arranged on the sliding plate (4), and the guide wheel (42) extends into the sliding groove (32) to slide.

5. A lifting cabinet according to claim 4, characterized in that: The sliding groove (32) is arranged in a "C" shape with high sides and a low middle.

6. The lifting cabinet according to claim 1, characterized in that: The inner guide groove (41) is a C-shaped groove arranged around the hinge point between the first swing arm (5) and the sliding plate (4), and the C-shaped groove is arranged through the sliding plate (4).

7. The lifting cabinet according to claim 1, characterized in that: The outer guide groove (71) is an "S"-shaped groove that passes through the driving arm (7).

8. The lifting cabinet according to claim 1, characterized in that: The linkage device is a linkage rod (43) hingedly mounted on the sliding plate (4), and the other end of the linkage rod (43) is hingedly connected to the driving arm (7).

9. The lifting cabinet according to claim 1, characterized in that: The linkage device is a linkage track (44) arranged on the sliding plate (4), and a linkage pulley (72) is arranged on the driving arm (7), and the linkage pulley (72) extends into the linkage track (44) to slide.

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