Hinge

Abstract

The utility model discloses a hinge, which comprises a first hinge seat, a second hinge seat, a piston, a boosting elastic piece and a connecting shaft, and is characterized in that the piston comprises a central hole, the piston is sleeved on the connecting shaft through the central hole, the connecting shaft comprises a matching section which is in sliding contact with the central hole, and the boosting elastic piece is sleeved on the matching section. At least the cross section of the matching section of the connecting shaft is in a non-circular shape, and the shape of the center hole is matched with that of the matching section. The hinge is small in size and convenient to install and use.

Description

Technical Field

[0001] The utility model relates to the field of door body rotating connectors, in particular to a hinge. Background Art

[0002] A door hinge is a device installed on a door body to realize the opening and closing of the door body. For example, the door hinge installed on a freezer. In the Chinese patent with the application number 201710586360.8, the door hinge includes a fixed seat connected to a cabinet body, a rotating seat connected to the door body, and a core shaft passing through the fixed seat and the rotating seat. It also includes an assisting elastic member and a piston installed in the fixed seat. By the rotational cooperation between the rotating seat and the piston, the assisting elastic member is compressed, so as to provide assistance for opening or closing the door.

[0003] Among them, the axial sliding between the piston and the fixed seat is realized by the cooperation of a guiding groove and a guiding block on the contact surface between the two. However, the structures of the guiding groove and the guiding block occupy space, resulting in a large volume of the hinge. Summary of the Utility Model

[0004] The utility model provides a hinge with a small volume, which is convenient for installation and use, and is realized through the following technical solutions:

[0005] A hinge includes a first hinge seat, a second hinge seat, a piston, an assisting elastic member and a connecting shaft. It is characterized in that: the piston includes a central hole, the piston is sleeved on the connecting shaft through the central hole, the connecting shaft includes a matching section that is in sliding contact with the central hole, the cross-sectional shape of at least the matching section of the connecting shaft is non-circular, and the shape of the central hole is adapted to the matching section.

[0006] Further, the cross-sectional shape of the matching section is a regular polygon or an ellipse.

[0007] Further, the connecting shaft is a regular polygonal prism or an elliptic cylinder.

[0008] Further, first limiting members and second limiting members are arranged at both ends of the connecting shaft to axially limit the first hinge seat and the second hinge seat.

[0009] Further, a first clamping groove is arranged at one end of the connecting shaft, the first limiting member is a first gasket, and the first gasket is clamped with the first clamping groove and abuts against the end of the first hinge seat.

[0010] Further, the first clamping groove is a first annular groove, the first gasket includes a first connecting hole and a first opening communicating with the first connecting hole, and the first gasket is sleeved on the first annular groove through the first opening.

[0011] Further, a first deformation groove communicating with the first connection hole is provided on the inner side of the first gasket along the first connection hole.

[0012] Further, a second clamping groove is provided at the other end of the connecting shaft, the second limiting member is a second gasket, and the second gasket is clamped with the second clamping groove and abuts against the end of the second hinge seat.

[0013] Further, the second clamping groove is a second annular groove, the second gasket includes a second connection hole and a second opening communicating with the second connection hole, and the second gasket is sleeved on the second annular groove through the second opening.

[0014] Further, a second deformation groove communicating with the second connection hole is provided on the inner side of the second gasket along the second connection hole.

[0015] Further, the first limiting member and the second limiting member and the connecting shaft are of an integrally formed structure.

[0016] Further, the first hinge seat includes a first hinge portion and a first mounting portion, and the first mounting portion is used for connecting with the door body of the opening and closing device;

[0017] The second hinge seat includes a second hinge portion and a second mounting portion, the second hinge portion is rotatably connected with the first hinge portion, the second mounting portion is used for connecting with the box body of the opening and closing device, and a strengthening hole is further provided on the second hinge portion, and the strengthening hole is butted against a strengthening protrusion on the box body of the opening and closing device.

[0018] The design has the following advantages: Since the cross-sectional shape of the fitting section of the connecting shaft is set to be non-circular, and the central hole of the piston is correspondingly non-circular, the connecting shaft can directly limit the rotation of the piston, ensuring that the piston only slides along the axial direction of the connecting shaft, thus eliminating the guide block and guide groove structure between the piston and the second hinge seat in the traditional hinge, reducing the volume of the hinge, and facilitating the installation and use of the hinge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of an embodiment of the hinge of the present invention;

[0020] Figure 2 is Figure 1 a schematic exploded view of the hinge;

[0021] Figure 3 is Figure 1 a schematic diagram of the structure of the connecting shaft of the hinge;

[0022] Figure 4 is Figure 1 a schematic diagram of the structure of the piston of the hinge;

[0023] Figure 5 is Figure 1 Schematic structural diagram of the first gasket and the second gasket of the hinge;

[0024] Figure 6 is Figure 1 Schematic structural diagram of the hinge installed on the opening and closing device;

[0025] Figure 7 is Figure 6 Partial structural diagram of the box body of the opening and closing device;

[0026] Figure 8 is Figure 1 Partial structural diagram of the hinge installed on the opening and closing device.

[0027] Meanings of the reference numerals in the figure: 1. First hinge seat; 11. First hinge part; 12. First mounting part; 2. Second hinge seat; 21. Second hinge part; 211. Reinforcing hole; 22. Second mounting part; 3. Piston; 31. Central hole; 4. Boosting elastic member; 5. Connecting shaft; 51. First card slot; 52. Second card slot; 6. First gasket; 61. First connection hole; 62. First opening; 63. First deformation groove; 7. Second gasket; 71. Second connection hole; 72. Second opening; 73. Second deformation groove; 8. Opening and closing device; 81. Box body; 811. Reinforcing protrusion; 82. Door body. Detailed implementation manners

[0028] The following further elaborates in detail the content of the present utility model in conjunction with the accompanying drawings and specific implementation manners.

[0029] As Figures 1 to 4 shown, this embodiment provides a hinge, including a first hinge seat 1, a second hinge seat 2, a piston 3, a boosting elastic member 4 and a connecting shaft 5, characterized in that: the piston 3 includes a central hole 31, the piston 3 is sleeved on the connecting shaft 5 through the central hole 31, the connecting shaft 5 includes a matching section that is in sliding contact with the central hole 31, the cross-sectional shape of at least the matching section of the connecting shaft 5 is non-circular, and the shape of the central hole 31 is adapted to the matching section.

[0030] Specifically, the first hinge seat 1 is a rotating seat, and the second hinge seat 2 is a fixed seat. The hinge can be connected between the door body and the box body of an opening and closing device (such as a freezer), so that the door body and the box body are hinged. The first hinge seat 1, the second hinge seat 2, the piston 3, and the boosting elastic member 4 are all sleeved on the connecting shaft 5. The first hinge seat 1 is provided with a first spiral surface, and the piston 3 is provided with a second spiral surface. When the first hinge seat 1 and the second hinge seat 2 rotate relative to each other, through the spiral cooperation between the first hinge seat 1 and the piston 3, the piston 3 slides axially and compresses the boosting elastic member 4, thereby forming a boost for opening or closing the door.

[0031] In this embodiment, since the cross-sectional shape of the mating section of the connecting shaft 5 is set to be non-circular, and the central hole 31 of the piston 3 is correspondingly non-circular, the connecting shaft 5 can directly restrict the rotation of the piston 3 and ensure that the piston 3 slides axially along the connecting shaft 5. Thus, the guide block and guide groove structure between the piston 3 and the second hinge seat 2 in the traditional hinge is omitted, reducing the volume of the hinge and facilitating the installation and use of the hinge.

[0032] Please refer to Figures 3 - 4 , further, the cross-sectional shape of the mating section is a regular polygon or an ellipse. Preferably, the cross-sectional shape of the mating section is a regular hexagon. Correspondingly, the central hole 31 of the piston 3 is also a regular hexagon. In this embodiment, the fit between the connecting shaft 5 and the piston 3 is more stable.

[0033] Please refer to Figures 3 - 4 , further, for the convenience of manufacturing the connecting shaft 5, the connecting shaft 5 has a uniform thickness structure, that is, the shape of the remaining section of the connecting shaft 5 is the same as the shape of the mating section. Specifically, the connecting shaft 5 is a regular polygonal prism or an elliptic cylinder. Preferably, the connecting shaft 5 is a regular hexagonal prism.

[0034] Please refer to Figure 2 , further, the two ends of the connecting shaft 5 are provided with a first limiting member and a second limiting member to axially limit the first hinge seat 1 and the second hinge seat 2. The first limiting member and the second limiting member respectively abut against the ends of the first hinge seat 1 and the second hinge seat 2, so that the first hinge seat 1, the second hinge seat 2 and the internal piston 3 and the boosting elastic member 4 are assembled into one body.

[0035] Please refer to Figure 5 , further, one end of the connecting shaft 5 is provided with a first card slot 51, the first limiting member is a first gasket 6, and the first gasket 6 is clamped with the first card slot 51 and abuts against the end of the first hinge seat 1. Specifically, the first card slot 51 is a first annular groove, the first gasket 6 includes a first connection hole 61 and a first opening 62 communicating with the first connection hole 61, and the first gasket 6 is sleeved on the first annular groove through the first opening 62. The outer diameter of the first gasket 6 is larger than the outer diameter of the connecting shaft 5. By sleeving the first gasket 6 in the first card slot 51 of the connecting shaft 5, a block is formed on the first hinge seat 1 to achieve the stopping effect.

[0036] Please refer to Figure 5, Further, a first deformation groove 63 communicating with the first connection hole 61 is provided on the first gasket 6. The first gasket 6 can be deformed through the first opening 62 and the first deformation groove 63, facilitating the sleeving of the first gasket 6 on the first card slot 51. After the first gasket 6 is sleeved on the first card slot 51, the shape of the first gasket 6 is restored and it is clamped on the first card slot 51.

[0037] Please refer to Figure 5 , Further, a second card slot 52 is provided at one end of the connecting shaft 5. The second limiting member is a second gasket 7. The second gasket 7 is clamped with the second card slot 52 and abuts against the end of the second hinge seat 2. Specifically, the second card slot 52 is a second annular groove. The second gasket 7 includes a second connection hole 71 and a second opening 72 communicating with the second connection hole 71. The second gasket 7 is sleeved on the second annular groove through the second opening 72. The outer diameter of the second gasket 7 is larger than the outer diameter of the connecting shaft 5. By sleeving the second gasket 7 into the second card slot 52 of the connecting shaft 5, a blocking effect is formed on the second hinge seat 2 to achieve the stopping effect.

[0038] Please refer to Figure 5 , Further, a second deformation groove 73 communicating with the second connection hole 71 is provided on the second gasket 7. The second gasket 7 can be deformed through the second opening 72 and the second deformation groove 73, facilitating the sleeving of the second gasket 7 on the second card slot 52. After the second gasket 7 is sleeved on the second card slot 52, the shape of the second gasket 7 is restored and it is clamped on the second card slot 52.

[0039] In one embodiment, the first limiting member and the second limiting member and the connecting shaft are of an integrally formed structure, that is, a rivet structure with both ends riveted, and the shaft part of the rivet is non-cylindrical. This can simplify the production and installation processes of the first limiting member, the second limiting member and the connecting shaft.

[0040] In one embodiment, please refer to Figure 1 , 6 -8, the first hinge seat 1 includes a first hinge portion 11 and a first mounting portion 12. The first mounting portion 12 is used for connecting with the door body 82 of the opening and closing device 8;

[0041] The second hinge seat 2 includes a second hinge portion 21 and a second mounting portion 22. The second hinge portion 21 is rotatably connected with the first hinge portion 11. The second mounting portion 22 is used for connecting with the box body 81 of the opening and closing device 8. A reinforcing hole 211 is further provided on the second hinge portion 21. The reinforcing hole 211 is docked with a reinforcing protrusion 811 on the box body 81 of the opening and closing device 8.

[0042] The first hinge seat 1 is connected to the door body 82 of the opening and closing device 8 through the first mounting portion 12, and the second hinge seat 2 is connected to the box body 81 of the opening and closing device 8 through the second mounting portion 22, so that the door body 82 and the box body 81 are hinged. Among them, the reinforcing protrusion 811 on the box body 81 of the opening and closing device 8 is adapted to the reinforcing hole 211 on the second hinge portion 21. When the second mounting portion 22 is connected to the box body 81, the reinforcing protrusion 811 is inserted into the reinforcing hole 211. Through the cooperation of the reinforcing hole 211 and the reinforcing protrusion 811, the connection strength between the second hinge seat 2 and the box body 81 can be further enhanced. In this way, when the opening and closing device 8 opens the door, the protrusion of the box body 81 can play a limiting role on the second hinge seat 2 through the reinforcing hole 211, so that the hinge will not tilt backward after being stressed, achieving the anti-backward-tilting effect, making the hinge structure stable and reliable and not loosening.

[0043] The above detailed description is a specific description of the feasible embodiments of the present invention, and this embodiment is not intended to limit the protection scope of the present invention. Any equivalent implementation or modification made without departing from the present invention shall be included in the protection scope of the present invention.

Claims

1. A hinge, comprising a first hinge seat (1), a second hinge seat (2), a piston (3), a booster elastic member (4) and a connecting shaft (5), characterized in that: The piston (3) comprises a center hole (31), and the piston (3) is sleeved on the connecting shaft (5) through the center hole (31). The connecting shaft (5) comprises a matching section that is in sliding contact with the center hole (31). The cross-sectional shape of at least the matching section of the connecting shaft (5) is non-circular, and the shape of the center hole (31) is adapted to the matching section.

2. The hinge according to claim 1, characterized in that: The cross-sectional shape of the matching section is a regular polygon or an ellipse; or, the connecting shaft (5) is a regular polygonal prism or an elliptical cylinder.

3. The hinge according to claim 1, characterized in that: A first limiting member and a second limiting member are provided at both ends of the connecting shaft (5) to limit the first hinge seat (1) and the second hinge seat (2) in the axial direction.

4. The hinge according to claim 3, characterized in that: A first clamping groove (51) is provided at one end of the connecting shaft (5); the first limiting member is a first gasket (6); the first gasket (6) is clamped with the first clamping groove (51) and fits the end of the first hinge seat (1).

5. The hinge according to claim 4, characterized in that: The first clamping groove (51) is a first annular groove, the first gasket (6) comprises a first connecting hole (61) and a first opening (62) connected to the first connecting hole (61), and the first gasket (6) is sleeved in the first annular groove through the first opening (62).

6. The hinge according to claim 5, characterized in that: The first gasket (6) is also provided with a first deformation groove (63) along the inner side of the first connection hole (61) and connected to the first connection hole (61).

7. The hinge according to claim 3, characterized in that: The other end of the connecting shaft (5) is provided with a second clamping groove (52), the second limiting member is a second gasket (7), and the second gasket (7) is clamped with the second clamping groove (52) and fits the end of the second hinge seat (2).

8. The hinge according to claim 7, characterized in that: The second clamping groove (52) is a second annular groove, the second gasket (7) comprises a second connecting hole (71) and a second opening (72) communicating with the second connecting hole (71), and the second gasket (7) is sleeved in the second annular groove through the second opening (72).

9. The hinge according to claim 8, characterized in that: The second gasket (7) is also provided with a second deformation groove (73) along the inner side of the second connection hole (71) and connected to the second connection hole (71).

10. The hinge according to claim 3, characterized in that: The first limiting member, the second limiting member and the connecting shaft (5) are an integrally formed structure.

11. The hinge according to claim 1, characterized in that: include: The first hinge seat (1) comprises a first hinge portion (11) and a first mounting portion (12), wherein the first mounting portion (12) is used to be connected to a door body (82) of an opening and closing device (8); The second hinge seat (2) comprises a second hinge part (21) and a second mounting part (22); the second hinge part (21) is rotatably connected to the first hinge part (11); the second mounting part (22) is used to be connected to a box body (81) of the opening and closing device; the second hinge part (21) is also provided with a reinforcement hole (211); the reinforcement hole (211) is connected to a reinforcement protrusion (811) on the box body (81) of the opening and closing device (8).

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