Cabinet opening structure and refrigeration equipment

Abstract

The cabinet opening structure comprises a clamping plate and insertion pins, the clamping plate is in a step shape and comprises a first connecting plate, a second connecting plate, a third connecting plate and a fourth connecting plate which are connected in sequence, the first connecting plate and the third connecting plate are arranged in the first direction, and the second connecting plate and the fourth connecting plate are arranged in the second direction; a clamping groove is formed in the inner side of the clamping plate; the inserting corners are provided with first connecting ends and second connecting ends, the ends of the clamping plates are inserted into the connecting ends of the inserting corners to connect and fix the adjacent clamping plates, the number of the inserting corners is matched with the number of the clamping plates, and first inserting plates, third inserting plates and second inserting plates are arranged in the inserting corners, the locking part is arranged at the rear end of the second inserting plate, the convex ball type particle structure is arranged in the locking part, the inserting corner and the clamping plate are fixedly connected through the convex ball type particle structure, other connecting structures do not need to be additionally designed, and the overall assembly efficiency of a production line is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cabinet openings, and particularly to a cabinet opening structure and a refrigeration device. Background Art

[0002] Traditional refrigerator extrusion cabinet openings mostly use straight plug - type buckles or bolts for fixation, which have the following defects: Due to the complex structure of the extruded part of the cabinet body, such as special - shaped grooves, multi - curved surfaces, etc., manual alignment takes time and is prone to deviations of more than ±2 mm; conventional plastic buckles are prone to embrittlement and fracture in low - temperature environments, and metal bolts are prone to loosening, resulting in a decline in sealing performance and poor connection stability; special connectors need to be customized for different models of cabinet openings, with insufficient adaptability and increased mold development costs. Summary of the Invention

[0003] To solve the problems existing in the prior art, the first object provided by the present invention is to provide a cabinet opening structure, including:

[0004] A clamping plate, there are multiple clamping plates, which enclose to form a frame - like structure. The clamping plate is in a stepped shape and includes a first connecting plate, a second connecting plate, a third connecting plate, and a fourth connecting plate connected in sequence. The first connecting plate and the third connecting plate are arranged along a first direction, the second connecting plate and the fourth connecting plate are arranged along a second direction. A clamping groove is arranged inside the clamping plate, and the clamping groove includes a first clamping groove extending along the side wall of the first connecting plate, a second clamping groove extending along the side wall of the second connecting plate, and a third clamping groove extending along the side wall of the third connecting plate;

[0005] An insertion corner, the insertion corner has a first connection end and a second connection end. The end of the clamping plate is inserted into the connection end of the insertion corner to connect and fix adjacent clamping plates. The number of insertion corners matches the number of clamping plates. The insertion corner is provided with a first insertion plate and a third insertion plate arranged along the first direction, and a second insertion plate arranged along the second direction. A locking part is arranged at the rear end of the second insertion plate, and a convex - ball - type particle structure is arranged in the locking part.

[0006] Specifically, guiding inclined surfaces are arranged at the front ends of the first insertion plate, the second insertion plate, and the third insertion plate.

[0007] Specifically, the first insertion plate, the second insertion plate, and the third insertion plate are connected in a support frame. The support frame is in an "L" shape. The top end of the support frame is connected to the middle of the first insertion plate, the bottom end of the support frame is connected to the middle of the third insertion plate. The support frame is provided with a second insertion plate on the side facing the third insertion plate, and the second insertion plate is in a "T" - shaped structure.

[0008] Specifically, the first insertion plate, the second insertion plate, and the support frame enclose to form a first stress - dispersion cavity, and the second insertion plate, the third insertion plate, and the support frame enclose to form an "L" - shaped second stress - dispersion cavity.

[0009] Specifically, a hollow structure is provided on the contact surface between the inserted corner and the clamping plate.

[0010] Specifically, the hollow structure is provided in the first insertion plate outside the first stress dispersion cavity and the second insertion plate outside the second stress dispersion cavity.

[0011] Specifically, the area of a single part of the hollow structure is 5%-20% of the area of the surface where the hollow structure is located.

[0012] Specifically, a first claw is provided on one side of the first connecting plate facing the third connecting plate; on one side of the second connecting plate facing the first claw, a second "L"-shaped claw is provided near one end of the first connecting plate. There is a gap groove between the second claw and the first connecting plate, and the second claw is flush with the first claw. The gap groove and the first claw form a first clamping groove in combination; at the corner of the second connecting plate and the third connecting plate, on one side of the second connecting plate facing the first claw, a third "L"-shaped claw opposite to the second claw is provided, and the second claw and the third claw form a second clamping groove in combination; at the corner where the second connecting plate and the third connecting plate are connected, a fourth "L"-shaped claw is provided on the side of the third connecting plate away from the first connecting plate; a fifth claw is provided on one side of the fourth connecting plate facing the second connecting plate, and the fourth claw and the fifth claw are arranged opposite to each other and form a third clamping groove in combination.

[0013] Specifically, the friction coefficient between the second insertion plate and the second connecting plate is 6.4.

[0014] Specifically, it includes a cabinet body, and the cabinet opening structure according to any one of claims 1-9 is provided at the cabinet opening of the cabinet body.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The present invention provides a cabinet opening structure, which is made by inserting a clamping plate into a corner insert. In the corner insert, a plurality of stress dispersion cavities are formed by enclosing with a support frame, a first insertion plate, a second insertion plate, and a third insertion plate, so as to disperse the stress on the insertion plate in the state of inserting the clamping claws, and reduce the fracture risk in a low-temperature environment; a guiding inclined surface is designed at the insertion plate of the insertion pin to guide the insertion process of the clamping plate 1, and it is not necessary to be completely aligned during insertion. Moreover, a locking part is arranged at the rear end of the second insertion plate, and the corner insert and the clamping plate are fixedly connected through a convex ball type particle structure, which can withstand an axial tension of ≥800 N, and there is no need to design other connecting structures additionally. This not only effectively solves the problem of poor connection stability of the existing connecting mechanism in a low-temperature environment, but also significantly improves the overall assembly efficiency of the production line; at the contact surface between the corner insert and the clamping plate, a hollow structure is arranged in the corner insert, so that the injected foaming material forms an anchoring point after curing, and the firmness of the connection between the corner insert and the clamping plate during the connection process is improved through physical embedding, and the stability of the connection between the corner insert and the clamping plate is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a schematic diagram of the structure of the clamping plate of the present invention;

[0019] Figure 3 is an enlarged view of part A of the present invention;

[0020] Figure 4 is a first schematic diagram of the structure of the corner insert of the present invention;

[0021] Figure 5 is a second schematic diagram of the structure of the corner insert of the present invention;

[0022] Figure 6 is a schematic diagram of the cross-sectional structure of the clamping plate of the present invention;

[0023] Figure 7 is a schematic diagram of the cross-sectional structure of the assembled state of the clamping plate and the corner insert of the present invention.

[0024] Reference numerals: 1, clamping plate; 101, first connecting plate; 102, second connecting plate; 103, third connecting plate; 104, fourth connecting plate; 105, first clamping groove; 106, second clamping groove; 107, third clamping groove; 108, first clamping claw; 109, second clamping claw; 110, third clamping claw; 111, fourth clamping claw; 112, fifth clamping claw; 113, clearance groove; 2, corner insert; 201, support frame; 202, first insertion plate; 203, second insertion plate; 204, third insertion plate; 205, first stress dispersion cavity; 206, second stress dispersion cavity; 207, guiding inclined surface; 208, locking part; 209, through hole; 210, hollow structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further describes the embodiments of the present invention in detail in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0026] In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, terms such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] As Figures 1-7 shown, the present invention provides a cabinet opening structure, including a plurality of clamping plates 1 that enclose to form a frame structure and a plurality of corner joints 2 that are inserted at the ends of the clamping plates 1 to connect and fix adjacent clamping plates 1. The clamping plates 1 and the corner joints 2 are both integrally formed structures, and the connection and fixation of the clamping plates 1 are realized through the corner joints 2.

[0028] The corner joint 2 has a first connection end and a second connection end. The ends of the clamping plates 1 are inserted into the connection ends of the corner joint 2 to connect and fix adjacent clamping plates 1. The number of corner joints 2 matches the number of clamping plates 1. As an embodiment of the present application, each cabinet opening structure includes four corner joints 2 and four clamping plates 1. The first connection end and the second connection end of the corner joint 2 are vertically arranged, so that the clamping plates enclose to form a rectangular frame structure.

[0029] The clamping plate 1 is made by injection molding in one piece, and its structure is in a stepped shape, including a first connecting plate 101, a second connecting plate 102, a third connecting plate 103 and a fourth connecting plate 104 that are connected in sequence. The first connecting plate 101 and the third connecting plate 103 are arranged along the first direction, the second connecting plate 102 and the fourth connecting plate 104 are arranged along the second direction, and the first direction is perpendicular to the second direction. It can be understood that the first direction is the horizontal direction and the second direction is the vertical direction. A card slot is provided on the inner side of the clamping plate 1. The card slot includes a first card slot 105 extending along the side wall of the first connecting plate 101, a second card slot 106 extending along the side wall of the second connecting plate 102, and a third card slot 107 extending along the side wall of the third connecting plate 103.

[0030] On one side of the first connecting plate 101 facing the third connecting plate 103, a first claw 108 is provided; on one side of the second connecting plate 102 facing the first claw 108, at one end close to the first connecting plate 101, an "L"-shaped second claw 109 is provided. There is a clearance groove 113 between the second claw 109 and the first connecting plate 101. The second claw 109 is flush with the first claw 108. The clearance groove 113 and the first claw 108 form a first card slot 105; at the corner where the second connecting plate 102 is connected to the third connecting plate 103, on one side of the second connecting plate 102 facing the first claw 108, an "L"-shaped third claw 110 opposite to the second claw 109 is provided. The second claw 109 and the third claw 110 form a second card slot 106; at the corner of the second connecting plate 102 and the third connecting plate 103, on the side of the third connecting plate 103 away from the first connecting plate 101, an "L"-shaped fourth claw 111 is provided; on one side of the fourth connecting plate 104 facing the second connecting plate 102, a fifth claw 112 is provided. The fourth claw 111 and the fifth claw 112 are opposite to each other and form a third card slot 107.

[0031] The insertion corner 2 is injection molded by a mold using a modified ABS material with high elasticity and low temperature resistance, and includes a support frame 201, a first insertion plate 202, a second insertion plate 203, and a third insertion plate 204. Among them, the first insertion plate 202 and the third insertion plate 204 are arranged along the first direction, and the second insertion plate 203 is arranged along the second direction. The support frame 201 is in an "L" shape. The top end of the support frame 201 is connected to the middle of the first insertion plate 202, and the bottom end of the support frame 201 is connected to the middle of the third insertion plate 204. On the side of the support frame 201 facing the third insertion plate 204, a second insertion plate 203 is provided, and the second insertion plate 203 is in a "T" shape. There is a gap for fixing the second claw 109 between the first insertion plate 202 and the second insertion plate 203, and there is a gap for fixing the third claw 110 and the fourth claw 111 between the second insertion plate 203 and the third insertion plate 204. The first insertion plate 202 is inserted into the first card slot 105, the second insertion plate 203 is inserted into the second card slot 106, and the third insertion plate 204 is inserted into the third card slot 107.

[0032] The insertion plates enclose to form multiple stress dispersion cavities. Among them, the first insertion plate 202, the second insertion plate 203, and the support frame 201 enclose to form a first stress dispersion cavity 205, and the second insertion plate 203, the third insertion plate 204, and the support frame 201 enclose to form an "L"-shaped second stress dispersion cavity 206. The first stress dispersion cavity 205 and the second stress dispersion cavity 206 disperse the load, disperse the stress on the insertion plates in the state of inserting the claws into the support frame 201, and absorb energy through the local deformation of the support frame 201, reducing the fracture risk in a low-temperature environment.

[0033] To achieve the rapid assembly of the pallet 1 and the insertion corner 2, a guiding inclined surface 207 with an inclination angle of 15° - 25° is provided at the front ends of the first insertion plate 202, the second insertion plate 203, and the third insertion plate 204 of the insertion corner 2. The thickness of the front end of the insertion plate is about 3 mm, and the thickness of the rear end is about 5 mm. The guiding inclined surface 207 guides the insertion process of the pallet 1, and complete alignment is not required during insertion, which improves the assembly efficiency. A locking portion 208 is provided at the rear end of the second insertion plate 203. A convex ball type particle structure is provided in the locking portion 208. The friction coefficient between the second insertion plate 203 and the second connecting plate 102 is 6 - 7, and the preferred friction coefficient is 6.4. The pallet 1 is fixed by the high friction force of the convex ball type particle structure. The convex ball type particle structure can withstand an axial tension of ≥800 N, and the pallet 1 can be prevented from sliding or loosening after insertion during long-term use, and no other additional structures such as buckles or bolts are required to fix the pallet 1.

[0034] Through the guiding of the pallet 1 by the guiding inclined surface 207, no additional auxiliary tools are required during the plugging process, which reduces the manual adjustment time. The single-point assembly time is reduced from 7 - 8 seconds in the traditional solution to ≤3 seconds. At the same time, the convex ball type particle structure is used to fix the pallet 1 by virtue of the friction force. Compared with fixing the pallet 1 by bolts in the traditional process, the overall assembly efficiency of the production line is increased by 26%.

[0035] After the refrigerator is assembled, foaming material needs to be filled between the housing and the inner liner of the refrigerator to fill the voids by the expansion of the foaming material. To facilitate the flow of the foaming material, a through hole 209 is provided at the corner position of the insertion corner 2. The foaming material infiltrates from the through hole 209 and fills the stress dispersion cavity, so that the insertion corner 2 and the pallet 1 form an integral structure after the foaming material is cured. To further enhance the degree of integration between the insertion corner 2 and the pallet 1 after the foaming material is cured, a hollow structure 210 is provided at the contact surface between the insertion corner 2 and the pallet 1. After the foaming material is injected into the hollow structure 210 and cured, an anchoring point is formed, and the firmness of the connection between the insertion corner 2 and the pallet 1 is improved through physical fitting.

[0036] On the premise of ensuring the overall strength, the area of a single hollow structure 210 is preferably 5% - 20% of the overall area of the surface where it is located. An overly large hollow structure 210 may weaken the support, but appropriately increasing the hollow area such as modular distribution can promote the flow of the foaming agent and enhance the integration effect after the foaming material is cured. When fully considering the reasonable area of the hollow structure 210, the hollow structure 210 can be designed in multiple multi-dimensional spaces, such as designing the hollow structure 210 in at least one of the first insertion plate 202, the second insertion plate 203, and the third insertion plate 204, expanding the contact surface to increase the bonding area with the foaming agent, and avoiding stress concentration at the same time.

[0037] As a preferred embodiment of the present invention, a hollow structure 210 is provided in the first insertion plate 202 outside the first stress dispersion cavity 205 and in the second insertion plate 203 outside the second stress dispersion cavity 206. The foaming glue contacts the first connecting plate 101 and the third connecting plate 103 respectively at the hollow structure 210. Without the need to additionally use other structures such as bolts and buckles, the insertion angle 2 and the clamping plate 1 are firmly connected together only through the convex ball type particle structure and the anchoring effect after the foaming glue is cured.

[0038] The clamping plate 1 adopts a standardized cross-section design, covering more than 95% of the same-profile cabinet openings through size modularization, supporting die reuse, reducing the demand for customized dies, and reducing the material loss rate from 12% to 4%.

[0039] The present invention also provides a refrigeration device, including a cabinet body and the above-mentioned cabinet opening structure provided at the cabinet opening of the cabinet body. This cabinet opening structure is particularly suitable for a variety of commercial and medical refrigerators, effectively improving the sealing performance and structural stability of the refrigerator cabinet opening, being easy to install, having good low-temperature resistance, and ensuring the refrigeration efficiency and long-term service performance of the refrigerator.

[0040] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A cabinet opening structure, characterized in that, Including: Pallets (1), a plurality of the pallets (1) enclose to form a frame structure, the pallets (1) are stepped, including a first connecting plate (101), a second connecting plate (102), a third connecting plate (103) and a fourth connecting plate (104) connected in sequence, the first connecting plate (101) and the third connecting plate (103) are arranged along a first direction, the second connecting plate (102) and the fourth connecting plate (104) are arranged along a second direction, a card slot is arranged inside the pallet (1), the card slot includes a first card slot (105) extending along the side wall of the first connecting plate (101), a second card slot (106) extending along the side wall of the second connecting plate (102) and a third card slot (107) extending along the side wall of the third connecting plate (103); Corner inserts (2), the corner inserts (2) have a first connection end and a second connection end, the ends of the pallets (1) are inserted into the connection ends of the corner inserts (2) to connect and fix adjacent pallets (1), the number of the corner inserts (2) matches the number of the pallets (1), a first insertion plate (202) and a third insertion plate (204) arranged along the first direction, and a second insertion plate (203) arranged along the second direction are arranged in the corner inserts, a locking part (208) is arranged at the rear end of the second insertion plate (203), and a convex ball type particle structure is arranged in the locking part (208).

2. The cabinet opening structure according to claim 1, wherein Guide inclined surfaces (207) are arranged at the front ends of the first insertion plate (202), the second insertion plate (203) and the third insertion plate (204).

3. The cabinet opening structure according to claim 1, characterized in that, The first insertion plate (202), the second insertion plate (203) and the third insertion plate (204) are connected in a support frame (201), the support frame (201) is in an "L" shape, the top end of the support frame (201) is connected to the middle of the first insertion plate (202), the bottom end of the support frame (201) is connected to the middle of the third insertion plate (204), a second insertion plate (203) is arranged on the side of the support frame (201) facing the third insertion plate (204), and the second insertion plate (203) is in a "T" shape structure.

4. The cabinet opening structure according to claim 3, wherein, The first insertion plate (202), the second insertion plate (203) and the support frame (201) enclose to form a first stress dispersion cavity (205), and the second insertion plate (203), the third insertion plate (204) and the support frame (201) enclose to form an "L" shaped second stress dispersion cavity (206).

5. The cabinet opening structure according to claim 4, characterized in that, A hollow structure (210) is arranged on the contact surface between the corner insert (2) and the pallet (1).

6. The cabinet opening structure according to claim 5, characterized in that, The hollow structure (210) is arranged in the first insertion plate (202) outside the first stress dispersion cavity (205) and in the second insertion plate (203) outside the second stress dispersion cavity (206).

7. The cabinet opening structure according to any one of claims 5 or 6, characterized in that The single area of the hollow structure (210) is 5% - 20% of the area of the surface where the hollow structure is located.

8. The cabinet opening structure according to claim 1, characterized in that On one side of the first connecting plate (101) facing the third connecting plate (103), a first claw (108) is provided; on one side of the second connecting plate (102) facing the first claw (108), near one end of the first connecting plate (101), an "L"-shaped second claw (109) is provided. There is a clearance groove (113) between the second claw (109) and the first connecting plate (101). The second claw (109) is flush with the first claw (108). The clearance groove (113) and the first claw (108) are combined to form a first card slot (105); at the corner of the second connecting plate (102) and the third connecting plate (103), on one side of the second connecting plate (102) facing the first claw (108), an "L"-shaped third claw (110) opposite to the second claw (109) is provided. The second claw (109) and the third claw (110) are combined to form a second card slot (106); at the corner where the second connecting plate (102) and the third connecting plate (103) are connected, on the side of the third connecting plate (103) away from the first connecting plate (101), an "L"-shaped fourth claw (111) is provided; on one side of the fourth connecting plate (104) facing the second connecting plate (102), a fifth claw (112) is provided. The fourth claw (111) and the fifth claw (112) are opposite to each other and combined to form a third card slot (107).

9. The cabinet opening structure according to claim 1, wherein, The coefficient of friction between the second insertion plate (203) and the second connecting plate (102) is 6 - 7.

10. A refrigeration device, characterized in that, It includes a cabinet body, and at the cabinet opening of the cabinet body, the cabinet opening structure according to any one of claims 1 - 9 is provided.

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