Hinge with force relief function

Abstract

The application provides a hinge with a force relieving function, comprising a fixing base, a base and a transmission assembly, wherein 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 a swing hinge of the transmission assembly, the locating end and the elastic end of the power source are connected to the transmission assembly and the power cam respectively, a force relieving cam part is arranged on the transmission assembly, the force relieving cam part is arranged between the power cam and the power source, and the force relieving cam part rotates to the elastic end of the power source under the elastic action of itself and separates the power source from the power cam at the same time, or the force relieving cam part rotates away from the elastic end of the power source under the action of external force and re-connects the power source and the power cam at the same time. The hinge has the advantages of simple structure, uniform transmission stress, stable transmission, self-help door closing function, power assembly force relieving function, convenient assembly and maintenance and ensured use quality of the product.

Description

TECHNICAL FIELD

[0001] The present application relates to the hinge technical field, specifically to a hinge with force unloading function. BACKGROUND

[0002] The existing hinge is widely used in furniture and electrical appliances, especially in refrigerator, the hinge is used between the cabinet and the door. The structure of the existing hinge generally comprises a fixed seat for fixing the cabinet, a base for fixing the door, and a transmission assembly hinged between the fixed seat and the base. In order to automatically close the door after a certain angle, a power source is installed on the hinge, which is convenient to use, especially suitable for large load furniture or electrical appliances.

[0003] However, the hinge with the above structure has the following disadvantages in practical application:

[0004] 1. The existing hinge is not uniform in transmission force, and is prone to shaking and noise;

[0005] 2. In the process of assembly production or maintenance, the elastic force of the power source acts on the transmission assembly, it is difficult to unload the power source, which is not convenient for assembly and maintenance, affects the use of the product, and reduces the service life of the product. SUMMARY

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

[0007] The purpose of the present application is achieved by a hinge with force unloading function, comprising a fixed seat installed on a cabinet, a base installed on a door, and a transmission assembly hinged between the fixed seat and the base, wherein the transmission assembly is provided with a power assembly for automatic closing of the base relative to the fixed seat, the power assembly comprises 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 an unloading cam piece that can act the elastic force of the power source on the power cam or not, the unloading cam piece is arranged between the power cam and the power source, and the unloading cam piece rotates to the elastic end of the power source while separating the power source from the power cam under its own elastic force, or the unloading cam piece rotates away from the elastic end of the power source while reconnecting the power source and the power cam under external force.

[0008] According to the optimization, the force relief cam piece comprises a force relief cam and a torsion spring, the force relief cam is rotationally connected to the transmission assembly, and one elastic end of the torsion spring is connected to the transmission assembly and the other elastic end is connected to the force relief cam.

[0009] According to the optimization, the transmission assembly comprises 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 to the fixed seat, the swing ends of the main beam are respectively hinged to the connecting ends 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 swing end of the main beam, the power source is arranged in the connecting arm, the positioning end and the elastic end of the power source are respectively hinged to the swing end and the connecting end of the connecting arm, the connecting end of the connecting arm is rotationally connected with the force relief cam, and the force relief cam is automatically rotationally connected to the power source through the torsion spring.

[0011] According to the optimization, the power source comprises a power spring shaft, a power spring seat and a roller, the power spring shaft is arranged in the connecting arm, 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 in the opening and closing state, and the power spring seat is provided with a force relief groove for the force relief cam to rotate in or out so as to separate or rollingly connect the roller and the power cam.

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

[0013] According to the optimization, the connecting arm is provided with a limiting swing rod for limiting the expansion 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 is connected to the power spring seat.

[0014] According to the optimization, the connecting end of the connecting arm is provided with a through hole for compressing the power spring seat by a tool in the fully open state to rotate the force relief cam onto the power spring seat.

[0015] The advantages of the present application are:

[0016] 1) Through the structural cooperation of the transmission component, power source and unloading cam component, when the hinge is open, the unloading cam component rotates onto the unloading groove of the power source, thereby pressing against the power spring seat of the power source and preventing the roller from contacting the power cam, thus unloading the power component, facilitating hinge assembly and maintenance, and improving the quality of product use.

[0017] 2) The transmission components using this structure are simple in structure, with uniform transmission force and smooth transmission. Under the action of the automatic closing force of the power source, the door closes more smoothly, reducing noise generation and ensuring the product's performance. Attached Figure Description

[0018] Appendix Figure 1 This is a structural schematic diagram of the unloading state in a preferred embodiment of the present invention.

[0019] Appendix Figure 2 This is a cross-sectional view of the unloading state in a preferred embodiment of the present invention.

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

[0021] Appendix Figure 4 This is a structural schematic diagram of a preferred embodiment of the present invention, showing the state of canceling the unloading force.

[0022] Appendix Figure 5 This is a cross-sectional view of the preferred embodiment of the present invention with the unloading state cancelled.

[0023] Appendix Figure 6 This is a structural diagram of a preferred embodiment of the present invention with the unloading state removed (connecting arm omitted).

[0024] Appendix Figure 7 This is a schematic diagram of the structure for restoring the unloading state according to a preferred embodiment of the present invention.

[0025] Appendix Figure 8 This is a cross-sectional view of the preferred embodiment of the present invention showing the restoration of the unloading state.

[0026] Appendix Figure 9 This is a structural diagram of the preferred embodiment of the present invention for restoring the unloading state (connecting arm omitted). Detailed Implementation

[0027] The present invention will now be further described with reference to the accompanying drawings.

[0028] According to the appendix Figures 1 to 9As shown in the figure, the hinge with force relieving function of the present application comprises a fixed seat 1 mounted on a cabinet body, 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 automatic closing of the base 2 relative to the fixed seat 1. 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 at 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 a force relieving cam member 6 which can act the elastic force of the power source 4 on or off the power cam 3. The force relieving cam member 6 is arranged between the power cam 3 and the power source 4, and under the elastic action of the force relieving cam member 6 itself, the force relieving cam member 6 rotates to the elastic end of the power source 4 while separating the power source 4 from the power cam 3, or under the action of external force, the force relieving cam member 6 rotates away from the elastic end of the power source 4 while re-connecting the power source 4 to the power cam 3.

[0029] When the force relieving cam member 6 rotates to the power source 4 and lifts the power source 4, the power source 4 is prevented from contacting the power cam 3, so that the power assembly of the hinge is relieved of force, which facilitates assembly and maintenance and ensures the use quality of the product. When the force relieving cam member 6 rotates away from the power source 4, the power source 4 is re-connected to the cam, ensuring normal opening and closing of the hinge.

[0030] Referring to Figures 1 to 9 As shown in the figure, the force relieving cam member 6 is further refined and comprises a force relieving cam 61 and a torsion spring 62. The force relieving 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 force relieving cam 61.

[0031] The transmission assembly 5 comprises a large beam 51, a connecting arm 52, a small beam arm 53 and a cantilever 54. The positioning ends of the large beam 51 and the small beam arm 53 are respectively hinged to the fixed seat 1, the swing ends of the large beam 51 are 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 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 adaptively mounted at the swing end of the large 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 swing end and the connecting end of the connecting arm 52. The connecting end of the connecting arm 52 is rotatably connected with the force relieving cam 61, and the force relieving cam 61 can be automatically rotatably connected to the power source 4 through the torsion spring 62.

[0032] The transmission assembly 5 with the above structure is simple in structure, uniform in transmission stress, stable in transmission, and stable in door closing under the automatic closing force of the power source 4, which reduces noise and ensures the use effect of the product.

[0033] In the optimization scheme, 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, and 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 in opening and closing.

[0034] Further, the power spring seat 42 is provided with a force relief cam 61 that is turned in to separate the roller 43 from the power cam 3, or is turned out to make the roller 43 rollingly connected with the power cam 3.

[0035] In addition, the force relief cam 61 is installed with a rotating shaft 63 that is rotatably connected to the connecting end of the connecting arm 52, and the end of the rotating shaft 63 is provided with a control groove 64 that facilitates external force control of the rotation of the force relief cam 61.

[0036] Further, the connecting arm 52 is provided with a limiting swing rod 8 that limits the expansion 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, the connecting end of the connecting arm 52 is provided with a through hole 9 that can be used to compress the power spring seat 42 with a tool in a fully open state to make the force relief cam 61 rotate onto the power spring seat 42.

[0038] That is, in the force relief state, the force relief cam 61 is rotated onto the force relief groove 7, so that the force relief cam 61 presses against the power spring seat 42, and the roller 43 does not contact the power cam 3, and the power assembly is relieved of force.

[0039] When the force relief state is released, the rotating shaft 63 is twisted on the control groove 64 with a tool, so that the force relief cam 61 is rotated clockwise, the force relief cam 61 is rotated away from the force relief groove 7, the force relief cam 61 is separated from the power spring seat 42, so that the roller 43 is in contact with the power cam 3, and the hinge is ensured to work normally in opening and closing.

[0040] When the force relief 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 force relief cam 61 is tightly attached to the power spring seat 42 under the action of the torsional spring 62. Then, a working flat screwdriver is inserted into the through hole 9 to lift the power spring seat 42, and the force relief cam 61 is reset to rotate onto the force relief groove 7 under the action of the torsional spring 62, and the power assembly is restored to relieve force.

[0041] By adding the force relieving cam 6, the force relieving of the power assembly is effectively realized, the hinge assembly and maintenance are facilitated, the operation is easy, the product assembly efficiency is improved, and the product use quality is ensured.

[0042] The above specific embodiments are only preferred specific embodiments of the present application, and any structure identical or equivalent to the hinge with the force relieving function of the present application is within the protection scope of the present application.

Claims

1. A hinge with a force-dissipating function, comprising a fixed base (1) mounted on a cabinet, a base (2) mounted on a door, and a transmission assembly (5) hinged between the fixed base (1) and the base (2), wherein the transmission assembly (5) is provided with a power component for automatically closing the base (2) relative to the fixed base (1), characterized in that: The power assembly includes a power cam (3) and a power source (4). The power cam (3) is located at the swing hinge of the transmission assembly (5). The positioning end of the power source (4) is hinged to 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-relieving cam (6) that can apply the elastic force of the power source (4) to the power cam (3) or not apply it to the power cam (3). The force-relieving cam (6) is located between the power cam (3) and the power source (4). The force-relieving cam (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). Alternatively, the force-relieving cam (6) rotates away from the elastic end of the power source (4) under the action of an external force, while resetting the connection between the power source (4) and the power cam (3). The unloading cam component (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). 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 to the fixed base (1). The swinging end of the main beam (51) is respectively hinged to the connecting end of the connecting arm (52) and the cantilever (54). The swinging ends of the connecting arm (52) and the cantilever (54) are respectively hinged to the base (2). 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 swing end of the main beam (51), and the power source (4) is located inside the connecting arm (52). The positioning end and elastic end of the power source (4) are respectively hinged to the swing end and the connecting end of the connecting arm (52). The connecting end of the connecting arm (52) is rotatably connected to the unloading cam (61). The unloading cam (61) can be automatically rotatably connected to the power source (4) through the torsion spring (62).

2. The hinge with force-dissipating function according to claim 1, characterized in that: 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 located inside 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 rolled on the power spring seat (42) and is rolled on the power cam (3) as it opens and closes. The power spring seat (42) is provided with a relief groove (7) for the relief cam (61) to rotate in so that the roller (43) is separated from the power cam (3), or for the relief cam (61) to rotate out so that the roller (43) is rolled on the power cam (3).

3. The hinge with force-dissipating function according to claim 1, characterized in that: The unloading cam (61) is equipped with a rotating shaft (63) that is rotatably connected to the connecting end of the connecting arm (52). 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).

4. The hinge with force-dissipating function according to claim 2, characterized in that: The connecting arm (52) is provided with a limiting swing rod (8) for limiting the extension and retraction 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).

5. The hinge with force-dissipating function according to claim 2, characterized in that: The connecting end of the connecting arm (52) has a through hole (9) that allows the power spring seat (42) to be compressed by a tool in the fully open state so that the unloading cam (61) can rotate onto the power spring seat (42).

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