Embedded spring hinge

Abstract

According to the technical scheme, the embedded spring hinge is characterized by comprising a first connecting base and a second connecting base which are matched with each other and movably connected with each other through a first connecting arm, a second connecting arm, a third connecting arm and a fourth connecting arm; the second connecting seat comprises a first connecting block and a second connecting block, a first connecting flange and a second connecting flange are arranged on the left side and the right side of the first connecting block respectively, a third connecting flange is fixedly connected to the second connecting block, and a spring assembly is arranged between the second connecting arm and the third connecting arm; a torsional spring assembly is arranged between the first connecting base and the first connecting arm. The refrigerator door has the advantages that the structure is simple, the second connecting base is arranged in a split mode, the second connecting base is prevented from being broken, normal opening and closing of the refrigerator door are guaranteed, and the second connecting base can be conveniently machined and produced.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, specifically to an embedded spring hinge. Background Technology

[0002] Currently, Chinese patent CN 218265521 U discloses an embedded refrigerator hinge, which includes a first connecting seat, a second connecting seat, and a connecting mechanism. The connecting mechanism includes first, second, third, and fourth connecting arms. An elastic mechanism is also provided between the connecting mechanism and the first or second connecting seat. The first connecting arm includes a receiving groove. The second and third connecting arms are rotatably disposed inside the receiving groove. A window is opened on the outer side of the first connecting arm corresponding to the bottom wall of the receiving groove. One end of the second connecting arm has a pivot connecting part, which movably passes through the window. A pin passes through the receiving groove of the first connecting arm. At least one side wall of the window has an outwardly extending protrusion, which is positioned close to the pin. This embedded refrigerator hinge of the present invention has a simple and compact structure, high reliability, and a large range of motion.

[0003] In this patent, the other ends of the second and third connecting arms are pivotally connected to the second connecting seat. Therefore, the second connecting seat is stamped in the middle to form a flange to ensure normal connection with the second and third connecting arms. However, the stamped flange also greatly reduces the overall mechanical strength of the second connecting seat, causing the refrigerator hinge to break easily at the stamped flange after long-term use, thus affecting the normal opening and closing of the refrigerator door.

[0004] Therefore, it is essential to improve the existing refrigerator hinges. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an embedded spring hinge, which has the advantages of simple structure, separate design of the second connecting seat to prevent breakage of the second connecting seat, ensuring normal opening and closing of the refrigerator door, and facilitating the processing and production of the second connecting seat.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an embedded spring hinge, comprising a first connecting seat and a second connecting seat adapted to each other, the first connecting seat and the second connecting seat being fixedly connected to the refrigerator body and the refrigerator door respectively, the first connecting seat and the second connecting seat being movably connected to each other by providing a first connecting arm, a second connecting arm, a third connecting arm and a fourth connecting arm, the second connecting seat being hinged to the second connecting arm and the third connecting arm respectively by providing a first connecting rivet and a second connecting rivet, the second connecting seat comprising a first connecting block and a second connecting block adapted to the first connecting block, the first connecting block and the second connecting block being fixedly connected to each other by the first connecting rivet and the second connecting rivet, the left and right sides of the first connecting block being respectively provided with an integral first connecting flange and a second connecting flange, the second connecting block being fixedly connected with a third connecting flange adapted to the second connecting flange, the third connecting flange being integrally structured with the second connecting block, a spring assembly being provided between the second connecting arm and the third connecting arm, and a torsion spring assembly being provided between the first connecting seat and the first connecting arm.

[0007] By adopting the above technical solution, the embedded spring hinge forms a second connecting seat through the first connecting block and the second connecting block, which ensures the overall mechanical strength of the second connecting seat. This avoids the problem in the prior art where the stamped flange reduces the overall mechanical strength of the second connecting seat, causing the refrigerator hinge to easily break at the flange after long-term use. This ensures the normal opening and closing of the refrigerator door and extends its service life.

[0008] The present invention is further configured such that: the first connecting flange, the second connecting flange and the third connecting flange are respectively provided with a first connecting through hole and a second connecting through hole adapted to the first connecting rivet and the second connecting rivet.

[0009] By adopting the above technical solution, the first connecting through hole and the second connecting through hole facilitate the riveting of the first connecting rivet and the second connecting rivet to the two sides of the second connecting seat, thereby improving the fixing effect at the connection between the first connecting block and the second connecting block.

[0010] The present invention is further configured such that the second connecting flange and the third connecting flange are also fixedly connected to each other by arc welding.

[0011] By adopting the above technical solution, the fixing effect of the first connecting block and the second connecting block is further improved, the overall mechanical strength of the second connecting seat is increased, and the second connecting seat is prevented from breaking at the connection between the second connecting flange and the third connecting flange during long-term use.

[0012] The present invention is further configured such that: the second connecting block is provided with two door connecting parts adapted to the refrigerator door on the side away from the third connecting flange; the door connecting parts are provided with a number of interconnected reinforcing steps; the number of steps of the reinforcing steps is set to at least two; the reinforcing steps are made by integral stamping; the outermost reinforcing step of the door connecting part is provided with a door fixing hole adapted to the refrigerator door; the second connecting block is fixedly connected to the refrigerator door by setting fixing bolts and door fixing holes.

[0013] By adopting the above technical solution and using a multi-stage reinforcing step, the mechanical strength of the door connection is greatly improved, thereby extending the service life of the embedded spring hinge. The door fixing hole facilitates the fixed connection between the second connecting seat and the refrigerator door.

[0014] The present invention is further configured such that: the spring assembly includes a first support rod and a second support rod inserted through the first support rod, the second support rod and the first support rod are movably connected to each other, and the first support rod and the second support rod are respectively provided with matching movable grooves and guide chamfers, the first support rod and the second support rod are fitted with compression springs, the ends of the first support rod and the second support rod are respectively provided with a first support block and a second support block, the first support block and the second support block are respectively abutting and connected to the two ends of the compression spring, the first support block and the second support block are respectively hinged to the second connecting arm and the third connecting arm by providing spring pins, and the second connecting arm and the third connecting arm are each provided with pin through holes adapted to the spring pins.

[0015] By adopting the above technical solution, the positioning effect of the embedded spring hinge in the open and closed state can be improved by the cooperation of the first support rod, the second support rod and the compression spring, thereby improving the opening and closing effect of the refrigerator door and making it easier for users to use. The guide chamfer facilitates the movement of the second support rod in the movable groove, and the spring assembly facilitates the linkage between the second connecting arm and the third connecting arm, thereby improving the reliability of the second connecting seat in the open and closed state.

[0016] The present invention is further configured such that: the torsion spring assembly includes a rolling bushing and a limiting torsion spring sleeved outside the rolling bushing; a third connecting rivet is inserted through the rolling bushing and movably connected thereto; the third connecting rivet passes through the first connecting arm and is fixedly connected to both ends of the first connecting seat; a limiting pin adapted to the limiting torsion spring is also inserted through the first connecting seat; one end of the limiting torsion spring cooperates with the first connecting arm, and the other end cooperates with the limiting pin.

[0017] By adopting the above technical solution, the positioning effect of the embedded spring hinge in the open and closed state can be improved through the cooperation between the limiting torsion spring, the first connecting arm and the limiting pin, thus making it easier for users to use.

[0018] The present invention is further configured such that: a support block adapted to the connecting part of the box door is provided between the connecting parts of the box door, the support block includes a support base plate and support side plates located on both sides of the support base plate, the support side plates are arranged in a right-angled triangular structure, and the support base plate is fixedly connected to the second connecting block by arc welding.

[0019] By adopting the above technical solution, the support base plate and the support side plate cooperate with each other to form a solid triangle between the second connecting block and the third connecting flange, thereby improving the overall mechanical strength of the second connecting seat, preventing deformation during use, and extending its service life.

[0020] The present invention is further configured such that: a connecting side plate adapted to the third connecting flange extends from the supporting side plate, and the connecting side plate is riveted to the third connecting flange by setting a fourth connecting rivet.

[0021] By adopting the above technical solution, the connection strength between the support block and the second connecting block is improved by connecting the side plate, thereby improving the structural strength of the connection between the second connecting block and the third connecting flange, preventing deformation after long-term use, which would affect the normal opening and closing of the refrigerator door.

[0022] In summary, this utility model has the following beneficial effects:

[0023] 1. The embedded spring hinge forms a second connecting seat through the first connecting block and the second connecting block, which ensures the overall mechanical strength of the second connecting seat. This avoids the problem in the prior art where the stamped flange reduces the overall mechanical strength of the second connecting seat, causing the refrigerator hinge to break easily at the flange after long-term use. This ensures the normal opening and closing of the refrigerator door and extends its service life.

[0024] 2. The cooperation of the first support rod, the second support rod, and the compression spring improves the positioning effect of the embedded spring hinge in the open and closed state, thereby improving the opening and closing effect of the refrigerator door and making it easier for users to use. The guide chamfer facilitates the movement of the second support rod within the movable groove, while the spring assembly facilitates the linkage between the second and third connecting arms, thereby improving the reliability of the second connecting seat in the open and closed state. The cooperation of the support base plate and the support side plate forms a solid triangle between the second connecting block and the third connecting flange, thereby improving the overall mechanical strength of the second connecting seat, preventing deformation during use, and extending its service life. Attached Figure Description

[0025] Figure 1 This is a perspective view of Embodiment 1 of the present utility model.

[0026] Figure 2These are two perspective views of Embodiment 1 of this utility model.

[0027] Figure 3 This is a top view of Embodiment 1 of the present utility model.

[0028] Figure 4 for Figure 3 A cross-sectional view at point AA.

[0029] Figure 5 for Figure 4 A magnified view of a portion of point B in the middle.

[0030] Figure 6 for Figure 1 A three-dimensional view of the second connecting seat.

[0031] Figure 7 for Figure 6 A diagram illustrating the disassembled state of the second connector.

[0032] Figure 8 for Figure 6 Two diagrams illustrating the split state of the second connector.

[0033] Figure 9 This is a schematic diagram of the support block in Embodiment 2 of this utility model.

[0034] Reference numerals: 1. First connecting seat; 2. Second connecting seat; 21. First connecting rivet; 22. Second connecting rivet; 23. First connecting block; 231. First connecting flange; 2311. First connecting through hole; 2312. Second connecting through hole; 232. Second connecting flange; 24. Second connecting block; 241. Third connecting flange; 242. Door connecting part; 2421. Reinforcing step; 2422. Door fixing hole; 3. First connecting arm; 4. Second connecting arm; 5. 6. Third connecting arm; 7. Fourth connecting arm; 8. Spring assembly; 9. First support rod; 10. Movable groove; 11. First support block; 12. Second support rod; 13. Guide chamfer; 14. Second support block; 15. Compression spring; 16. Spring pin; 17. Torsion spring assembly; 18. Rolling bushing; 19. Limiting torsion spring; 10. Third connecting rivet; 11. Limiting pin; 12. Support block; 13. Support base plate; 14. Support side plate; 15. Connecting side plate. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the accompanying drawings.

[0036] This embodiment discloses an embedded spring hinge, such as Figures 1 to 3As shown, it includes a first connecting seat 1 and a second connecting seat 2 that are adapted to each other. The first connecting seat 1 and the second connecting seat 2 are fixedly connected to the refrigerator body and the refrigerator door, respectively. The first connecting seat 1 and the second connecting seat 2 are movably connected to each other by setting a first connecting arm 3, a second connecting arm 4, a third connecting arm 5 and a fourth connecting arm 6. The first connecting arm 3, the second connecting arm 4, the third connecting arm 5 and the fourth connecting arm 6 cooperate with each other so that the first connecting seat 1 and the second connecting seat 2 can swing relative to each other, so that the second connecting seat 2 can be closed or opened relative to the first connecting seat 1.

[0037] like Figure 1 , 2 As shown in Figures 6 to 8, the second connecting seat 2 is hinged to the second connecting arm 4 and the third connecting arm 5 by means of a first connecting rivet 21 and a second connecting rivet 22, respectively. The second connecting seat 2 includes a first connecting block 23 and a second connecting block 24 adapted to the first connecting block 23. The first connecting block 23 and the second connecting block 24 are fixedly connected to each other by the first connecting rivet 21 and the second connecting rivet 22. The left and right sides of the first connecting block 23 are respectively provided with an integral first connecting flange 231 and a second connecting flange 232. The second connecting block 24 is fixedly connected with a third connecting flange adapted to the second connecting flange 232. 241, the third connecting flange 241 and the second connecting block 24 are integrated into a single structure. In the current technology, the second connecting seat 2 is formed by stamping a flange in its middle to achieve the effect of pivotally connecting the other ends of the second connecting arm 4 and the third connecting arm 5 to the second connecting seat 2. The embedded spring hinge forms the second connecting seat 2 through the first connecting block 23 and the second connecting block 24, which ensures the overall mechanical strength of the second connecting seat 2 and avoids the flange formed by stamping reducing the overall mechanical strength of the second connecting seat 2, which would cause the refrigerator hinge to break easily at the flange after long-term use. This ensures the normal opening and closing of the refrigerator door and extends its service life.

[0038] like Figures 6 to 8 As shown, the first connecting flange 231, the second connecting flange 232 and the third connecting flange 241 are respectively provided with a first connecting through hole 2311 and a second connecting through hole 2312 that are adapted to the first connecting rivet 21 and the second connecting rivet 22. The first connecting through hole 2311 and the second connecting through hole 2312 facilitate the riveting connection of the first connecting rivet 21 and the second connecting rivet 22 with the two sides of the second connecting seat 2, thereby improving the fixing effect at the connection between the first connecting block 23 and the second connecting block 24.

[0039] like Figure 6As shown, the second connecting flange 232 and the third connecting flange 241 are also fixedly connected to each other by arc welding, which further improves the fixing effect of the first connecting block 23 and the second connecting block 24, improves the overall mechanical strength of the second connecting seat 2, and prevents the second connecting seat 2 from breaking at the connection between the second connecting flange 232 and the third connecting flange 241.

[0040] like Figures 1 to 8 As shown, the second connecting block 24 has two door connecting parts 242 adapted to the refrigerator door on the side away from the third connecting flange 241. The door connecting parts 242 are provided with several interconnected reinforcing steps 2421. The number of steps of the reinforcing steps 2421 is set to at least two. The reinforcing steps 2421 are made by integral stamping. Compared with the connection between the second connecting seat 2 and the refrigerator door in the prior art, the mechanical strength of the door connecting part 242 can be greatly improved by the multi-step reinforcing steps 2421, thereby extending the service life of the embedded spring hinge. The outermost reinforcing step 2421 of the door connecting part 242 is provided with a door fixing hole 2422 adapted to the refrigerator door. The second connecting block 24 is fixedly connected to the refrigerator door by setting fixing bolts and door fixing holes 2422.

[0041] like Figure 4 and 5 As shown, a spring assembly 7 is provided between the second connecting arm 4 and the third connecting arm 5. The spring assembly 7 includes a first support rod 71 and a second support rod 72 inserted into the first support rod 71. The second support rod 72 is movably connected to the first support rod 71. The second support rod 72 extends and retracts within the first support rod 71 as the second connecting arm 4 and the third connecting arm 5 move. The first support rod 71 and the second support rod 72 are respectively provided with a matching movable groove 711 and a guide chamfer 721. The guide chamfer 721 facilitates the movement of the second support rod 72 within the movable groove 711. A compression spring 73 is sleeved on the first support rod 71 and the second support rod 72. The ends of the first support rod 71 and the second support rod 72 are... The refrigerator door is provided with a first support block 9712 and a second support block 9722. The first support block 9712 and the second support block 9722 are respectively connected to the two ends of the compression spring 73. The first support block 9712 and the second support block 9722 are respectively hinged to the second connecting arm 4 and the third connecting arm 5 by setting spring pins 74. The second connecting arm 4 and the third connecting arm 5 are provided with pin through holes that are adapted to the spring pins 74. By improving the positioning effect of the embedded spring hinge in the open and closed state through the spring assembly 7, the opening and closing effect of the refrigerator door is improved, which makes it easier for users to use. At the same time, the spring assembly 7 facilitates the mutual linkage between the second connecting arm 4 and the third connecting arm 5, thereby improving the reliability of the second connecting seat 2 in the open and closed state.

[0042] like Figure 4 As shown, a torsion spring assembly 8 is provided between the first connecting seat 1 and the first connecting arm 3. The torsion spring assembly 8 includes a rolling bushing 81 and a limiting torsion spring 82 sleeved outside the rolling bushing 81. A third connecting rivet 83 is inserted through the rolling bushing 81 and is movably connected to it. The third connecting rivet 83 passes through the first connecting arm 3 and is fixedly connected to both ends of the first connecting seat 1. A limiting pin 84 adapted to the limiting torsion spring 82 is also inserted through the first connecting seat 1. One end of the limiting torsion spring 82 cooperates with the first connecting arm 3, and the other end cooperates with the limiting pin 84. The limiting torsion spring 82 can improve the positioning effect of the embedded spring hinge in the open and closed state, that is, the opening and closing effect of the refrigerator door, so as to facilitate user use.

[0043] Example 2, this example is based on Example 1, such as... Figure 9 As shown, a support block 9 is also provided between the two door connecting parts 242. The support block 9 includes a support base plate 91 and support side plates 92 located on both sides of the support base plate 91. The support side plates 92 are arranged in a right-angled triangular structure. The support base plate 91 is fixedly connected to the second connecting block 24 by arc welding. The cooperation between the support base plate 91 and the support side plates 92 makes the second connecting block 24 and the third connecting flange 241 form a strong triangle, thereby improving the overall mechanical strength of the second connecting seat 2, preventing deformation during use, and extending the service life. A connecting side plate 93 adapted to the third connecting flange 241 extends from the support side plate 92. The connecting side plate 93 is riveted to the third connecting flange 241 by a fourth connecting rivet. The connecting side plate 93 improves the connection strength between the support block 9 and the second connecting block 24, thereby improving the structural strength of the connection between the second connecting block 24 and the third connecting flange 241, preventing deformation after long-term use, which would affect the normal opening and closing of the refrigerator door.

[0044] In summary, this utility model has the following beneficial effects:

[0045] 1. The embedded spring hinge forms the second connecting seat 2 through the first connecting block 23 and the second connecting block 24, which ensures the overall mechanical strength of the second connecting seat 2. This avoids the problem that the stamped flange in the prior art reduces the overall mechanical strength of the second connecting seat 2, causing the refrigerator hinge to break easily at the flange after long-term use. This ensures the normal opening and closing of the refrigerator door and extends its service life.

[0046] 2. The cooperation of the first support rod 71, the second support rod 72, and the compression spring 73 improves the positioning effect of the embedded spring hinge in the open and closed state, thereby improving the opening and closing effect of the refrigerator door and making it easier for users to use. The guide chamfer 721 facilitates the movement of the second support rod 72 in the movable groove 711. At the same time, the spring assembly 7 facilitates the linkage between the second connecting arm 4 and the third connecting arm 5, thereby improving the reliability of the second connecting seat 2 in the open and closed state. The cooperation of the support base plate 91 and the support side plate 92 forms a solid triangle between the second connecting block 24 and the third connecting flange 241, thereby improving the overall mechanical strength of the second connecting seat 2, preventing deformation during use, and extending its service life.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An embedded spring hinge, comprising a first connecting seat (1) and a second connecting seat (2) adapted to each other, the first connecting seat (1) and the second connecting seat (2) being fixedly connected to a refrigerator body and a refrigerator door respectively, the first connecting seat (1) and the second connecting seat (2) being movably connected to each other by providing a first connecting arm (3), a second connecting arm (4), a third connecting arm (5) and a fourth connecting arm (6), characterized in that: The second connecting seat (2) is hinged to the second connecting arm (4) and the third connecting arm (5) by setting a first connecting rivet (21) and a second connecting rivet (22) respectively. The second connecting seat (2) includes a first connecting block (23) and a second connecting block (24) adapted to the first connecting block (23). The first connecting block (23) and the second connecting block (24) are fixedly connected to each other by the first connecting rivet (21) and the second connecting rivet (22). The left and right sides of the first connecting block (23) The two sides are respectively provided with a first connecting flange (231) and a second connecting flange (232) integrated with it. The second connecting block (24) is fixedly connected with a third connecting flange (241) that is compatible with the second connecting flange (232). The third connecting flange (241) and the second connecting block (24) are integrated. A spring assembly (7) is provided between the second connecting arm (4) and the third connecting arm (5). A torsion spring assembly (8) is provided between the first connecting seat (1) and the first connecting arm (3).

2. An embedded spring hinge according to claim 1, characterized in that: The first connecting flange (231), the second connecting flange (232) and the third connecting flange (241) are respectively provided with a first connecting through hole (2311) and a second connecting through hole (2312) that are adapted to the first connecting rivet (21) and the second connecting rivet (22).

3. An embedded spring hinge according to claim 2, characterized in that: The second connecting flange (232) and the third connecting flange (241) are also fixedly connected to each other by arc welding.

4. An embedded spring hinge according to claim 3, characterized in that: The second connecting block (24) has two door connecting parts (242) adapted to the refrigerator door on the side away from the third connecting flange (241). The door connecting parts (242) are provided with several interconnected reinforcing steps (2421). The number of steps of the reinforcing steps (2421) is set to at least two. The reinforcing steps (2421) are made by integral stamping. The outermost reinforcing step (2421) of the door connecting part (242) is provided with a door fixing hole (2422) adapted to the refrigerator door. The second connecting block (24) is fixedly connected to the refrigerator door by setting fixing bolts and door fixing holes (2422).

5. An embedded spring hinge according to claim 4, characterized in that: The spring assembly (7) includes a first support rod (71) and a second support rod (72) inserted into the first support rod (71). The second support rod (72) is movably connected to the first support rod (71). The first support rod (71) and the second support rod (72) are respectively provided with matching movable grooves (711) and guide chamfers (721). The first support rod (71) and the second support rod (72) are sleeved with compression springs (73). The ends of the first support rod (71) and the second support rod (72) are respectively provided with... A first support block (9)(712) and a second support block (9)(722) are provided. The first support block (9)(712) and the second support block (9)(722) are respectively connected to the two ends of the compression spring (73). The first support block (9)(712) and the second support block (9)(722) are respectively hinged to the second connecting arm (4) and the third connecting arm (5) by setting a spring pin (74). The second connecting arm (4) and the third connecting arm (5) are each provided with a pin through hole that matches the spring pin (74).

6. An embedded spring hinge according to claim 5, characterized in that: The torsion spring assembly (8) includes a rolling bushing (81) and a limiting torsion spring (82) sleeved outside the rolling bushing (81). A third connecting rivet (83) is inserted through the rolling bushing (81) and is movably connected thereto. The third connecting rivet (83) passes through the first connecting arm (3) and is fixedly connected to both ends of the first connecting seat (1). A limiting pin (84) adapted to the limiting torsion spring (82) is also inserted through the first connecting seat (1). One end of the limiting torsion spring (82) cooperates with the first connecting arm (3), and the other end cooperates with the limiting pin (84).

7. An embedded spring hinge according to any one of claims 4-6, characterized in that: A support block (9) adapted to the door connecting part (242) is also provided between them. The support block (9) includes a support base plate (91) and support side plates (92) located on both sides of the support base plate (91). The support side plates (92) are arranged in a right-angled triangular structure. The support base plate (91) is fixedly connected to the second connecting block (24) by arc welding.

8. An embedded spring hinge according to claim 7, characterized in that: The supporting side plate (92) also extends a connecting side plate (93) adapted to the third connecting flange (241). The connecting side plate (93) is riveted to the third connecting flange (241) by setting a fourth connecting rivet.

Images