Hinge with force unloading function

Abstract

The hinge with the force unloading function comprises a fixing base, a base and a transmission assembly, the transmission assembly is provided with a power assembly, the power assembly comprises a power cam and a power source, the power cam is arranged at the swing hinge position of the transmission assembly, and the positioning end and the elastic end of the power source are connected to the transmission assembly and the power cam correspondingly. The transmission assembly is provided with a force unloading cam piece, the force unloading cam piece is arranged between the power cam and the power source, and the force unloading cam piece enables the power source to be separated from the power cam while rotating to the elastic end of the power source under the elastic effect of the force unloading cam piece. Or when the force unloading cam piece rotates away from the elastic end of the power source under the action of external force, the power source is in reset connection with the power cam. The self-service door closing device is simple in structure, uniform in transmission stress and stable in transmission, has a self-service door closing function, and has a power assembly force unloading function, so that assembly and maintenance are convenient, and the use quality of products is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of hinges, in particular to a hinge with a force unloading function. Background Art

[0002] Existing hinges are widely used in furniture and electrical appliances, especially refrigerators, where the cabinet and the door are hinged. The structure of the existing hinge generally includes a fixed seat for fixing the cabinet and a base for fixing the door, and a transmission component hinged between the fixed seat and the base. In order to automatically close the door after the door is closed at a certain angle, a power source is installed on the hinge, which is convenient to use and is particularly suitable for furniture or electrical appliances with large loads.

[0003] However, the hinge of the above structure has the following shortcomings in practical applications:

[0004] 1. The existing hinges are unevenly stressed during transmission, which can easily cause shaking and noise;

[0005] 2. During the assembly or maintenance process of the existing hinge, it is difficult to unload the power source due to the elastic force of the power source acting on the transmission component, which makes assembly and maintenance inconvenient, affects the assembly and use of the product, and reduces the service life of the product. Summary of the invention

[0006] The purpose of the invention is to overcome the shortcomings of the prior art and provide a hinge with a force unloading function, which has a simple structure, uniform transmission force, smooth transmission, a self-service door closing function, and a power component force unloading function to facilitate assembly and maintenance and ensure the quality of product use.

[0007] The inventive object of the present invention is achieved as follows: a hinge with a force unloading function, comprising a fixed seat installed on a cabinet body, a base installed on a door body and a transmission assembly hinged between the fixed seat and the base, the transmission assembly is provided with a power assembly for the base and the fixed seat to automatically close relative to each other, wherein the power assembly includes a power cam and a power source, the power cam is arranged at the swing hinge of the transmission assembly, the positioning end of the power source is hinged on the swing end of the transmission assembly, the elastic end of the power source is movably connected to the power cam, the transmission assembly is provided with a force unloading cam member for allowing the elastic force of the power source to act on the power cam or not act on the power cam, the force unloading cam member is arranged between the power cam and the power source, and the force unloading cam member rotates to the elastic end of the power source under its own elastic action to separate the power source from the power cam, or the force unloading cam member rotates away from the elastic end of the power source under the action of an external force to reset the power source and the power cam.

[0008] According to the above optimization, the unloading cam member includes an unloading cam and a torsion spring, the unloading cam is rotatably connected to the transmission assembly, one elastic end of the torsion spring is connected to the transmission assembly, and the other elastic end of the torsion spring is connected to the unloading cam.

[0009] According to the above optimization, the transmission assembly includes a main beam, a connecting arm, a small beam arm, and a cantilever. The positioning ends of the main beam and the small beam arm are respectively hinged on the fixed seat, the swing end of the main beam is respectively hinged to the connecting end of the connecting arm and the cantilever, the swing ends of the connecting arm and the cantilever are respectively hinged to the base, and the connecting end of the small beam arm is hinged to the connecting end of the cantilever;

[0010] The power cam is adapted to be installed at the swinging end of the beam, the power source is arranged in the connecting arm, and the positioning end and the elastic end of the power source are respectively hinged on the swinging end and the connecting end of the connecting arm, and the connecting end of the connecting arm is rotatably connected to a unloading cam, and the unloading cam can be automatically rotated and connected to the power source through a torsion spring.

[0011] According to the above optimization, the power source includes a power spring shaft, a power spring seat, and a roller. The power spring shaft is arranged in the connecting arm, and the swing end of the power spring shaft is hinged to the base. The connecting end of the power spring shaft is installed on the power spring seat. The roller is rollingly connected to the power spring seat and is rollingly connected with the power cam as it opens and closes. The power spring seat is provided with a unloading groove for allowing the unloading cam to rotate in to separate the roller from the power cam, or for allowing the unloading cam to rotate out to allow the roller to be rollingly connected to the power cam.

[0012] According to the above optimization, the unloading cam is equipped with a rotating shaft rotatably connected to the connecting end of the connecting arm, and the end of the rotating shaft is provided with a control groove for facilitating external force to control the rotation of the unloading cam.

[0013] According to the above optimization, the connecting arm is provided with a limiting swing rod for limiting the expansion and contraction range of the power spring seat under the elastic action of the power spring shaft, one end of the limiting swing rod is positioned and connected to the connecting end of the connecting arm, and the other end of the limiting swing rod is connected to the power spring seat.

[0014] According to the above optimization, the connecting end of the connecting arm is provided with a through hole which can be used to compress the power spring seat by a tool in the fully open state so as to allow the unloading cam to rotate onto the power spring seat.

[0015] The advantages of the present invention are:

[0016] 1) Through the structural coordination of the transmission component, the power source and the unloading cam, when the hinge is opened, the unloading cam rotates to the unloading groove of the power source, thereby supporting the power spring seat of the power source and preventing the roller from contacting the power cam, thereby unloading the power component, facilitating the assembly and maintenance of the hinge, and improving the quality of product use.

[0017] 2) The transmission component adopting this structure has a simple structure, uniform transmission force, and smooth transmission. Under the automatic closing force of the power source, the door closes more smoothly, reducing the generation of noise and ensuring the use effect of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 It is a structural schematic diagram of the unloading state of a preferred embodiment of the present invention.

[0019] Attached Figure 2 It is a cross-sectional view of a preferred embodiment of the present invention in a force-releasing state.

[0020] Attached Figure 3 This is a structural diagram of a preferred embodiment of the present invention in a force-releasing state (connecting arm omitted).

[0021] Attached Figure 4 It is a schematic structural diagram of canceling the unloading state in a preferred embodiment of the present invention.

[0022] Attached Figure 5 This is a cross-sectional view of a preferred embodiment of the present invention in a state where the force release is cancelled.

[0023] Attached Figure 6 This is a structural diagram of a preferred embodiment of the present invention in which the unloading state is canceled (the connecting arm is omitted).

[0024] Attached Figure 7 It is a schematic structural diagram of the preferred embodiment of the present invention to restore the unloading state.

[0025] Attached Figure 8 It is a cross-sectional view of a preferred embodiment of the present invention in the restored unloading state.

[0026] Attached Fig. 9 This is a structural diagram of a preferred embodiment of the present invention when restoring the unloading state (connecting arm omitted). DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] According to the attached Figures 1 to 9As shown in the figure, the hinge with unloading function of the present invention comprises a fixed seat 1 installed on the cabinet body, a base 2 installed on the door body and a transmission assembly 5 hinged between the fixed seat 1 and the base 2, wherein the transmission assembly 5 is provided with a power assembly for the base 2 and the fixed seat 1 to be automatically closed relative to each other. Among them, the power assembly comprises a power cam 3 and a power source 4. The power cam 3 is arranged at the swing hinge of the transmission assembly 5, the positioning end of the power source 4 is hinged on the swing end of the transmission assembly 5, and the elastic end of the power source 4 is movably connected to the power cam 3. The transmission assembly 5 is provided with an unloading cam member 6 for allowing the elastic force of the power source 4 to act on the power cam 3 or not act on the power cam 3. The unloading cam member 6 is arranged between the power cam 3 and the power source 4, and the unloading cam member 6 rotates to the elastic end of the power source 4 under its own elastic action, while separating the power source 4 from the power cam 3, or the unloading cam member 6 rotates away from the elastic end of the power source 4 under the action of external force, while resetting the connection between the power source 4 and the power cam 3.

[0029] When the unloading cam 6 rotates to the power source 4, the power source 4 is lifted up to prevent the power source 4 from contacting the power cam 3, so that the hinge power assembly can be unloaded, which is convenient for assembly and maintenance and ensures the quality of product use. When the unloading cam 6 rotates away from the power source 4, the power source 4 is reset to contact and connect with the cam, ensuring the normal opening and closing of the hinge.

[0030] Reference Figures 1 to 9 As shown, in further detail, the unloading cam member 6 includes an unloading cam 61 and a torsion spring 62. The unloading cam 61 is rotatably connected to the transmission assembly 5, one elastic end of the torsion spring 62 is connected to the transmission assembly 5, and the other elastic end of the torsion spring 62 is connected to the unloading cam 61.

[0031] The transmission assembly 5 includes a main beam 51, a connecting arm 52, a small beam arm 53, and a cantilever 54. The positioning ends of the main beam 51 and the small beam arm 53 are respectively hinged on the fixed seat 1, the swinging end of the main beam 51 is respectively hinged to the connecting ends of the connecting arm 52 and the cantilever 54, the swinging ends of the connecting arm 52 and the cantilever 54 are respectively hinged on the base 2, and the connecting end of the small beam arm 53 is hinged to the connecting end of the cantilever 54. The power cam 3 is adapted to be installed at the swinging end of the main beam 51, the power source 4 is arranged in the connecting arm 52, and the positioning end and the elastic end of the power source 4 are respectively hinged to the swinging end and the connecting end of the connecting arm 52, and the connecting end of the connecting arm 52 is rotatably connected with a force unloading cam 61, and the force unloading cam 61 can be automatically rotatably connected to the power source 4 through a torsion spring 62.

[0032] The transmission assembly 5 of this structure is simple in structure, has uniform transmission force, and is stable in transmission. Under the automatic closing force of the power source 4, the door closes more smoothly, reduces noise generation, and ensures the use effect of the product.

[0033] In the optimized solution, the power source 4 includes a power spring shaft 41, a power spring seat 42, and a roller 43. The power spring shaft 41 is arranged in the connecting arm 52, and the swing end of the power spring shaft 41 is hinged to the base 2, the connecting end of the power spring shaft 41 is installed on the power spring seat 42, and the roller 43 is rollingly connected to the power spring seat 42 and rollingly connected with the power cam 3 as it opens and closes.

[0034] Moreover, the power spring seat 42 is provided with a unloading groove 7 for the unloading cam 61 to rotate in to separate the roller 43 from the power cam 3, or for the unloading cam 61 to rotate out to make the roller 43 and the power cam 3 rollingly connected.

[0035] Furthermore, the unloading cam 61 is provided with a rotating shaft 63 rotatably connected to the connecting end of the connecting arm 52 , and the end of the rotating shaft 63 is provided with a control slot 64 for controlling the rotation of the unloading cam 61 by external force.

[0036] Furthermore, the connecting arm 52 is provided with a limiting swing rod 8 for limiting the extension and contraction range of the power spring seat 42 under the elastic action of the power spring shaft 41. One end of the limiting swing rod 8 is positioned and connected to the connecting end of the connecting arm 52, and the other end of the limiting swing rod 8 is connected to the power spring seat 42.

[0037] In addition, a through hole 9 is formed at the connecting end of the connecting arm 52 , which can be used to compress the power spring seat 42 by a tool in the fully opened state so as to allow the unloading cam 61 to rotate onto the power spring seat 42 .

[0038] That is, in the unloading state, the unloading cam 61 rotates to the unloading groove 7, so that the unloading cam 61 presses against the power spring seat 42, and the roller 43 is prevented from contacting the power cam 3, thereby realizing the unloading of the power component.

[0039] When the unloading state is released, a tool is used to twist the rotating shaft 63 on the control slot 64, thereby controlling the unloading cam 61 to rotate clockwise, so that the unloading cam 61 turns away from the unloading groove 7, and the unloading cam 61 is separated from the power spring seat 42, so that the roller 43 touches the power cam 3, ensuring the normal opening and closing of the hinge.

[0040] When the unloading state is restored, the hinge is opened to the maximum, the power cam 3 lifts the power spring seat 42 through the roller 43, and the unloading cam 61 is tightly attached to the power spring seat 42 under the action of the torsion spring 62. Then, a working flat screwdriver is inserted into the through hole 9 to lift the power spring seat 42, and the unloading cam 61 is reset and rotated to the unloading groove 7 under the action of the torsion spring 62, so that the power assembly can restore the unloading.

[0041] By adding the unloading cam member 6, the unloading of the power component is effectively achieved, the assembly and maintenance of the hinge are convenient, the operation is easy, the assembly efficiency of the product is improved, and the quality of the product is ensured.

[0042] The above specific embodiments are only specific implementation methods with better effects of the present invention. Any structure that is the same or equivalent to the hinge with force unloading function of the present invention is within the protection scope of the present invention.

Claims

1. A hinge with a force unloading function, comprising a fixed seat (1) mounted on a cabinet, a base (2) mounted on a door body, and a transmission assembly (5) hinged between the fixed seat (1) and the base (2), wherein the transmission assembly (5) is provided with a power assembly for the base (2) and the fixed seat (1) to automatically close relative to each other, characterized in that: The power assembly comprises a power cam (3) and a power source (4). The power cam (3) is arranged at a swing hinge of a transmission assembly (5). The positioning end of the power source (4) is hinged on the swing end of the transmission assembly (5). The elastic end of the power source (4) is movably connected to the power cam (3). The transmission assembly (5) is provided with a force unloading cam member (6) for allowing the elastic force of the power source (4) to act on the power cam (3) or not act on the power cam (3). The force unloading cam member (6) is arranged between the power cam (3) and the power source (4). The force unloading cam member (6) rotates to the elastic end of the power source (4) under its own elastic action, and separates the power source (4) from the power cam (3). Alternatively, the force unloading cam member (6) rotates away from the elastic end of the power source (4) under the action of an external force, and resets the power source (4) to the power cam (3).

2. The hinge with force unloading function according to claim 1, characterized in that: The unloading cam member (6) comprises an unloading cam (61) and a torsion spring (62); the unloading cam (61) is rotatably connected to the transmission assembly (5); one elastic end of the torsion spring (62) is connected to the transmission assembly (5); and the other elastic end of the torsion spring (62) is connected to the unloading cam (61).

3. The hinge with force unloading function according to claim 1, characterized in that: The transmission assembly (5) comprises a main beam (51), a connecting arm (52), a small beam arm (53), and a cantilever (54); the positioning ends of the main beam (51) and the small beam arm (53) are respectively hinged on a fixed seat (1); the swing end of the main beam (51) is respectively hinged to the connecting ends of the connecting arm (52) and the cantilever (54); the swing ends of the connecting arm (52) and the cantilever (54) are respectively hinged to a base (2); and the connecting end of the small beam arm (53) is hinged to the connecting end of the cantilever (54); The power cam (3) is adapted to be mounted on the swing end of the beam (51); the power source (4) is arranged in the connecting arm (52); and the positioning end and the elastic end of the power source (4) are respectively hinged on the swing end and the connecting end of the connecting arm (52); the connecting end of the connecting arm (52) is rotatably connected to a force unloading cam (61); and the force unloading cam (61) can be automatically rotatably connected to the power source (4) via a torsion spring (62).

4. The hinge with force unloading function according to claim 3, characterized in that: The power source (4) comprises a power spring shaft (41), a power spring seat (42), and a roller (43); the power spring shaft (41) is arranged in the connecting arm (52), and the swing end of the power spring shaft (41) is hinged to the base (2); the connecting end of the power spring shaft (41) is mounted on the power spring seat (42); the roller (43) is rollingly connected to the power spring seat (42) and is rollingly connected to the power cam (3) as it opens and closes; the power spring seat (42) is provided with a force unloading groove (7) for the unloading cam (61) to rotate in so that the roller (43) is separated from the power cam (3), or for the unloading cam (61) to rotate out so that the roller (43) is rollingly connected to the power cam (3).

5. The hinge with force unloading function according to claim 3, characterized in that: The unloading cam (61) is provided with a rotating shaft (63) rotatably connected to the connecting end of the connecting arm (52), and the end of the rotating shaft (63) is provided with a control slot (64) for facilitating external force control of the rotation of the unloading cam (61).

6. The hinge with force unloading function according to claim 4, characterized in that: The connecting arm (52) is provided with a limiting swing rod (8) for limiting the extension and contraction range of the power spring seat (42) under the elastic action of the power spring shaft (41); one end of the limiting swing rod (8) is positioned and connected to the connecting end of the connecting arm (52), and the other end of the limiting swing rod (8) is connected to the power spring seat (42).

7. The hinge with force unloading function according to claim 4, characterized in that: The connecting end of the connecting arm (52) is provided with a through hole (9) for compressing the power spring seat (42) by a tool in a fully open state so as to allow the unloading cam (61) to rotate onto the power spring seat (42).

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