CN211524480U - Automatic reset hinge - Google Patents

Abstract

An automatic reset hinge, comprising: the frame body connecting piece, a first shaft body assembly connected with the frame body connecting piece, a second shaft body assembly coaxially arranged with the first shaft body assembly, a fan body connecting piece connected with the second shaft body assembly, and reset elastic pieces respectively connected with the first shaft body assembly and the second shaft body assembly; the second shaft body component is freely and rotatably arranged relative to the first shaft body component, and the fan body connecting piece rotates along with the second shaft body component; the reset elastic piece is used for providing a driving force for the second shaft body assembly to deflect relative to the first shaft body assembly in a preset direction; when the door plate is in a closed state, a preset angle is kept between the fan body connecting piece and the frame body connecting piece, when the door plate is rotated to be opened, the second shaft body component deflects relative to the first shaft body component in a direction opposite to the preset direction, and after the door plate is separated from the push-pull of a hand, the reset elastic piece drives the second shaft body component to deflect in the preset direction.

Description

Automatic reset hinge

Technical Field

The utility model relates to a fitting technical field for the door and window especially relates to an automatic hinge resets.

Background

Along with the social development, people's standard of living is constantly improved, most families and units have installed air conditioner, heating installation, in order to prevent indoor outer heat exchange, the energy saving, need door plant or casement to keep the closed state, in addition, door plant or casement keep closed can also prevent outdoor harmful mosquito from flying into indoor, can ensure the disguise and the security in space, therefore the importance of the random door closing or closing of window can be seen, but the random door closing or closing of window is inconvenient or troublesome, also can not avoid people's carelessness to forget occasionally, current door and window hinge generally does not have the angle reset function, lead to under the condition that people do not have random door closing or close the window, the hinge can't drive door plant or casement automatic closing.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an automatic reset hinge for solving the problem that the existing door hinge cannot drive the door panel to automatically close.

An automatic reset hinge, comprising: the frame body connecting piece comprises a first shaft body assembly connected with the frame body connecting piece, a second shaft body assembly coaxially arranged with the first shaft body assembly, a fan body connecting piece connected with the second shaft body assembly, and a reset elastic piece respectively connected with the first shaft body assembly and the second shaft body assembly; the second shaft body assembly is freely and rotatably arranged relative to the first shaft body assembly, and the fan body connecting piece rotates along with the second shaft body assembly; the reset elastic piece is used for providing a driving force for the second shaft body assembly to deflect relative to the first shaft body assembly in a preset direction.

The automatic reset hinge is connected with a door frame or a window frame through the frame body connecting piece, the sash body connecting piece is connected with the door panel or the window sash, when the door panel is in a closed state, a preset angle is kept between the sash body connecting piece and the frame body connecting piece, when the door panel is rotated to be opened, the second shaft body assembly deflects relative to the first shaft body assembly in a direction opposite to the preset direction, after the door panel is separated from the push-pull of a hand, the reset elastic piece drives the second shaft body assembly to deflect in the preset direction, and the sash body connecting piece rotates along with the second shaft body assembly, so that the door panel can be.

In one embodiment, the frame connector comprises a first connecting plate, a first side brace connected with the first connecting plate, and a second side brace connected with the first connecting plate; the first side branch sleeve and the second side branch sleeve are coaxially arranged, and a gap is arranged between the first side branch sleeve and the second side branch sleeve; the first shaft body assembly is connected with the first side supporting sleeve; the fan body connecting piece comprises a second connecting plate and a middle supporting sleeve connected with the second connecting plate; the middle supporting sleeve is arranged between the first side supporting sleeve and the second side supporting sleeve; the middle supporting sleeve and the first side supporting sleeve are coaxially arranged; the first shaft body assembly is movably arranged in the middle supporting sleeve in a penetrating mode; the second shaft body assembly is connected with the middle supporting sleeve and movably penetrates through the second side supporting sleeve; the reset elastic piece comprises a deformation part accommodated in the middle support sleeve; the deformation portion is located between the first shaft body assembly and the second shaft body assembly; when the second shaft body component rotates relative to the first shaft body component in the opposite direction of the preset direction, the elastic deformation amount of the deformation part is increased; thereby realizing the rotation of the fan body connecting piece along the first shaft body component or the second shaft body component.

In one embodiment, the first shaft body assembly comprises a first rotating shaft connected with the first side supporting sleeve, a second rotating shaft movably arranged in the first side supporting sleeve in a penetrating way, and a first hinge shaft movably arranged in the first side supporting sleeve in a penetrating way; a plurality of first clamping teeth are annularly distributed at one end of the first rotating shaft facing the second rotating shaft; the first rotating shaft is also provided with an outer through hole which penetrates through the first rotating shaft; a plurality of second clamping teeth are annularly distributed at one end of the second rotating shaft facing the first rotating shaft, and correspond to the first clamping teeth; the end part of the second rotating shaft is meshed with the end part of the first rotating shaft through the second clamping tooth and the first clamping tooth; one end of the second rotating shaft, which faces the first rotating shaft, is also provided with an adjusting hole; the adjusting holes are arranged corresponding to the outer through holes; the first hinge shaft and the second rotating shaft synchronously rotate; the first hinge shaft is movably arranged in the middle support sleeve in a penetrating way; the second shaft body assembly comprises a second hinge shaft connected with the middle support sleeve, and the second hinge shaft penetrates through the second side support sleeve; the deformation part is of a compression spring structure and is positioned between the first hinge shaft and the second hinge shaft; therefore, the size of the resetting force on the second shaft body assembly and the second connecting plate is changed by adjusting the deformation amount of the resetting elastic piece.

In one embodiment, a first positioning groove is arranged on the outer side of the first hinge shaft, and the extending direction of the first positioning groove corresponds to the axial direction of the first hinge shaft; the first hinge shaft is also provided with an annular groove surrounding the outer side; the first shaft body assembly further comprises a first limiting piece arranged on the first side supporting sleeve in a penetrating mode; the end part of the first limiting piece extends into the annular groove; the reset elastic piece also comprises a first torsion arm extending from one end of the deformation part; the first torsion arm is accommodated in the first positioning groove; the first torsion arm extends into the annular groove, and the tail end of the first torsion arm penetrates through the first hinge shaft; thereby restricted the control range of deformation portion, avoided the reset power of door plant too big, or caused the elastic component that resets impaired.

In one embodiment, a second positioning groove is arranged on the second hinge shaft; the extending direction of the second positioning groove corresponds to the axial direction of the second hinge shaft; the reset elastic piece also comprises a second torsion arm extending from the other end of the deformation part; the second torque arm is accommodated in the second positioning groove; thereby driving the deformation part to generate elastic deformation.

In one embodiment, a first lug part extends from one end of the first hinge shaft facing the second hinge shaft; a second convex pin part extends from one end of the second hinge shaft facing the first hinge shaft; two ends of the deformation part are respectively sleeved on the first convex pin part and the second convex pin part; therefore, the torsion of the first torsion arm or the second torsion arm caused by unbalanced stress can be avoided.

In one embodiment, a boss part extends from one end of the second rotating shaft facing the first hinge shaft; one end of the first hinge shaft facing the second rotating shaft is provided with a sleeve hole corresponding to the boss part in shape; the boss part is arranged in the sleeve hole in a penetrating mode; thereby conveniently change the second pivot of different sizes, adapt to the first side support cover of different length.

In one embodiment, a first clamping hole is formed in the outer side of the first rotating shaft; the first shaft assembly further comprises a first locking member mounted on the first side brace; the first locking piece penetrates through the first clamping hole; so that the first rotating shaft can be locked in the first side support sleeve.

In one embodiment, a second clamping hole is formed in the outer side of the second hinge shaft; the second shaft assembly further comprises a second locking member mounted on the intermediate boss; the second locking piece penetrates through the second clamping hole; so that the second hinge shaft can be locked in the middle support sleeve.

In one embodiment, a plurality of first mounting holes are formed in the first connecting plate; a plurality of second mounting holes are formed in the second connecting plate; therefore, the installation and application of the automatic reset hinge can be realized.

Drawings

Fig. 1 is a schematic perspective view of an automatic reset hinge according to an embodiment of the present invention;

FIG. 2 is a perspective view of the self-righting hinge of FIG. 1 at another angle;

FIG. 3 is an exploded view of the self-righting hinge shown in FIG. 1;

FIG. 4 is an exploded view of the self-righting hinge of FIG. 1 at another angle;

FIG. 5 is a perspective view of the self-righting hinge of FIG. 1, wherein the frame and fan connectors are hidden;

FIG. 6 is a perspective view of the self-righting hinge of FIG. 1 at another angle with the frame connectors, the fan connectors, and the backing ring hidden;

FIG. 7 is an exploded view of the self-righting hinge of FIG. 6, wherein the frame connectors, the fan connectors, and the backing ring are hidden;

FIG. 8 is an exploded view of the self-righting hinge of FIG. 6 at another angle with the frame connectors, the fan connectors, and the backing ring hidden;

FIG. 9A is an enlarged view of the self-righting hinge of FIG. 7 at location A;

fig. 9B is an enlarged view of the self-return hinge shown in fig. 8 at B.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully below. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 9B, an automatic reset hinge 100 according to an embodiment of the present invention is used for connecting a door panel and a door frame, or connecting a window sash and a window frame. The automatic reset hinge 100 comprises a frame connecting piece 20, a first shaft body assembly 30 connected with the frame connecting piece 20, a second shaft body assembly 40 coaxially arranged with the first shaft body assembly 30, a fan body connecting piece 50 connected with the second shaft body assembly 40, and reset elastic pieces 60 respectively connected with the first shaft body assembly 30 and the second shaft body assembly 40; the second shaft body assembly 40 is freely and rotatably arranged relative to the first shaft body assembly 30, and the fan body connecting piece 50 rotates along with the second shaft body assembly 40; the return spring 60 serves to provide a driving force to the second shaft assembly 40 to deflect in a predetermined direction with respect to the first shaft assembly 30.

The door frame or the window frame is connected through the frame body connecting piece 20, the sash body connecting piece 50 is connected with the door panel or the window sash, when the door panel is in a closed state, a preset angle is kept between the sash body connecting piece 50 and the frame body connecting piece 20, when the door panel is rotated to be opened, the second shaft body assembly 40 deflects relative to the first shaft body assembly 30 in a direction opposite to the preset direction, after the door panel is separated from the push and pull of a hand, the reset elastic piece 60 drives the second shaft body assembly 40 to deflect in the preset direction, and the door panel can be driven to be automatically closed due to the fact that the sash body connecting piece 50 rotates along with.

Referring to fig. 3, the frame connector 20 includes a first connecting plate 21, a first side support sleeve 22 connected to the first connecting plate 21, and a second side support sleeve 23 connected to the first connecting plate 21; the first side branch sleeve 22 and the second side branch sleeve 23 are coaxially arranged with a gap therebetween; the first connecting plate 21 is provided with a plurality of first mounting holes 211.

Referring to fig. 3, 8 and 9B, the first shaft assembly 30 is connected to the first side support sleeve 22; the first shaft body assembly 30 is movably arranged in the middle support sleeve 52 in a penetrating way; the first shaft body assembly 30 comprises a first rotating shaft 31 connected with the first side support sleeve 22, a second rotating shaft 32 movably arranged in the first side support sleeve 22 in a penetrating way, and a first hinge shaft 33 movably arranged in the first side support sleeve 22 in a penetrating way; a plurality of first latch teeth 311 are annularly distributed at one end of the first rotating shaft 31 facing the second rotating shaft 32; the first shaft 31 is further provided with an outer through hole 312, and the outer through hole 312 penetrates through the first shaft 31.

Referring to fig. 7 and fig. 9A, a plurality of second latches 321 are annularly distributed on one end of the second rotating shaft 32 facing the first rotating shaft 31, and the second latches 321 correspond to the first latches 311; the end part of the second rotating shaft 32 is meshed with the end part of the first rotating shaft 31 through the second latch 321 and the first latch 311; one end of the second rotating shaft 32 facing the first rotating shaft 31 is also provided with an adjusting hole 322; the adjusting hole 322 is arranged corresponding to the outer through hole 312; the first hinge shaft 33 rotates synchronously with the second rotation shaft 32.

Referring to fig. 7, a first positioning groove 331 is disposed at an outer side of the first hinge shaft 33, and an extending direction of the first positioning groove 331 corresponds to an axial direction of the first hinge shaft 33; the first hinge shaft 33 is further provided with an annular groove 332 around the outside.

Referring to fig. 3 and 5, the first shaft assembly 30 further includes a first limiting member 34 disposed on the first side supporting sleeve 22; the end of the first retaining member 34 extends into the annular groove 332.

Referring to fig. 7 and 8, a boss portion 326 extends from one end of the second rotating shaft 32 facing the first hinge shaft 33; one end of the first hinge shaft 33 facing the second rotating shaft 32 is provided with a sleeve hole 334 with a shape corresponding to the boss part 326; the boss portion 326 is inserted into the trepan 334; specifically, the opening of the sleeve hole 334 is polygonal or star-shaped, so that the first hinge shaft 33 and the second hinge shaft 32 can rotate synchronously, and the second hinge shaft 32 can be conveniently mounted on the first hinge shaft 33.

Referring to fig. 3, a first locking hole 315 is disposed at an outer side of the first rotating shaft 31; the first shaft assembly 30 further includes a first locking member 35 mounted on the first side brace 22; the first locking member 35 is inserted into the first locking hole 315; specifically, the first locking member 35 is a screw member, and after the first rotating shaft 31 is inserted into the first side support sleeve 22, the first rotating shaft 31 is rotated to make the first locking hole 315 correspond to a screw hole on the first side support sleeve 22, where the first locking member 35 is installed, and after the first locking member 35 is inserted into the first locking hole 315, the first rotating shaft 31 can be locked in the first side support sleeve 22.

Referring to fig. 6 and 8, the second shaft assembly 40 is connected to the middle supporting sleeve 52, and the second shaft assembly 40 is movably inserted into the second side supporting sleeve 23; the second hinge shaft 41 is provided with a second positioning slot 411; the extending direction of the second positioning slot 411 corresponds to the axial direction of the second hinge shaft 41; a first lug part 333 extends from one end of the first hinge shaft 33 facing the second hinge shaft 41; a second lug part 412 extends from one end of the second hinge shaft 41 facing the first hinge shaft 33; the outer side of the second hinge shaft 41 is provided with a second locking hole 413.

Referring to fig. 1 and 3, the fan connecting member 50 includes a second connecting plate 51 and a middle supporting sleeve 52 connected to the second connecting plate 51; intermediate brace 52 is disposed between first side brace 22 and second side brace 23; the middle branch sleeve 52 is coaxially arranged with the first side branch sleeve 22; the first hinge shaft 33 is movably arranged in the middle support sleeve 52 in a penetrating way; the second shaft body assembly 40 comprises a second hinge shaft 41 connected with the middle support sleeve 52, and the second hinge shaft 41 is arranged in the second side support sleeve 23 in a penetrating mode.

Referring again to fig. 3, the second shaft assembly 40 further includes a second locking member 42 mounted on the intermediate support 52; the second locking member 42 is inserted into the second engaging hole 413; specifically, the second locking member 42 is a screw member, when the second hinge shaft 41 is inserted into the intermediate support 52, the second hinge shaft 41 is rotated to make the second locking hole 413 correspond to the screw hole of the intermediate support 52 for installing the second locking member 42, and after the second locking member 42 is inserted into the second locking hole 413, the second hinge shaft 41 can be locked in the intermediate support 52.

The second connecting plate 51 is provided with a plurality of second mounting holes 511; on the first connection plate 21, a screw member is connected to the door frame or the window frame after passing through the first installation hole 211; on the second connection plate 51, a screw member is connected to the door panel or the window sash through the second mounting hole 511.

Referring to fig. 3 and 5, the elastic restoring element 60 includes a deformation portion 61 accommodated in the middle support 52; the deformation portion 61 is located between the first shaft body assembly 30 and the second shaft body assembly 40; when the second shaft body assembly 40 rotates in the opposite direction to the predetermined direction relative to the first shaft body assembly 30, the amount of elastic deformation of the deformation portion 61 is increased; when in use, the first connecting plate 21 is fixedly connected with a door frame or a window frame, and the second connecting plate 51 is fixedly connected with a door panel or a window sash; the second connecting plate 51 can swing along the first shaft body assembly 30 or the second shaft body assembly 40 relative to the frame body connecting piece 20 under the limitation of the first shaft body assembly 30 and the second shaft body assembly 40; the door panel drives the second shaft assembly 40 to rotate through the second connecting plate 51 and the middle support 52, and the door panel is driven to reset in the closing direction through the second shaft assembly 40 and the second connecting plate 51 when the elastic potential energy of the reset elastic member 60 is released.

The deformation part 61 is of a compression spring structure and is positioned between the first hinge shaft 33 and the second hinge shaft 41; because the deformation part 61 of the elastic restoring element 60 is a compression spring structure, the deformation part 61 pushes the first hinge shaft 33 and the second rotating shaft 32 in the axial direction of the first hinge shaft 33, and the second rotating shaft 32 is attached to the first rotating shaft 31, so that the first latch 311 is fully engaged with the second latch 321; because the outer through hole 312 is arranged on the first rotating shaft 31, the end part of the adjusting handle penetrates through the first rotating shaft 31 through the outer through hole 312 and then penetrates into the adjusting hole 322 with a polygonal opening, the deformation part 61 is compressed by pressing the adjusting handle, the second rotating shaft 32 is far away from the first rotating shaft 31 to move, the meshing between the second latch 321 and the first latch 311 can be removed, then the second rotating shaft 32 and the first hinge shaft 33 actively rotate relative to the second hinge shaft 41, the deformation amount of the deformation part 61 is increased or reduced, and the size of the reset force of the door panel or the window sash is changed.

Referring to fig. 9A and 9B, to facilitate adjustment of the restoring force, one side of the first latch 311 is a first inclined surface 313, and the other side of the first latch 311 is a first abutting surface 314; the first abutment surface 314 is provided in parallel with the extending direction of the first rotation shaft 31; one side of the second latch 321 is a second inclined surface 323, and the other side of the second latch 321 is a second abutting surface 324; the second abutting surface 324 is disposed parallel to the extending direction of the second rotating shaft 32; the first inclined surface 313 corresponds to the second inclined surface 323, and the first contact surface 314 corresponds to the second contact surface 324; when the door panel deflects in the opening direction, the first abutting surface 314 blocks the second abutting surface 324, so that the second rotating shaft 32 and the first hinge shaft 33 are prevented from rotating along with the second hinge shaft 41, and the deformation part 61 is prevented from being deformed by the relative rotation of the second hinge shaft 41 and the first hinge shaft 33; when the adjusting handle rotates the second rotating shaft 32 relative to the first rotating shaft 31 in the direction of increasing the reset force, the second abutting surface 324 is away from the first abutting surface 314, and under the angle matching between the first inclined surface 313 and the second inclined surface 323, the second rotating shaft 32 and the first hinge shaft 33 push the deformation portion 61, so that the deformation portion 61 is contracted in the axial direction, and the relative angle change between the second rotating shaft 32 and the first rotating shaft 31 can be timely locked by the abutting between the second abutting surface 324 and the next first abutting surface 314.

Specifically, in order to conveniently release the engagement between the first latch 311 and the second latch 321 and recover the reset force added by the deformation portion 61, the first rotating shaft 31 is further provided with an unlocking hole 325, the unlocking hole 325 is located inside the adjusting hole 322, an opening of the unlocking hole 325 is circular, a shaft rod with a circular end portion is inserted into the unlocking hole 325 and pushes the second rotating shaft 32, so that the first latch 311 and the second latch 321 can be separated, meanwhile, the second rotating shaft 32 can freely rotate relative to the first rotating shaft 31, and under the driving of the deformation portion 61, the second rotating shaft 32 and the first hinge shaft 33 deflect in the direction that the reset force is reduced.

Referring to fig. 7, the restoring elastic member 60 further includes a first torsion arm 62 extending from one end of the deformation portion 61; the first torsion arm 62 is received in the first positioning groove 331; the first torsion arm 62 extends into the annular groove 332, and the end of the first torsion arm 62 is inserted into the first hinge shaft 33; due to the limitation of the first positioning groove 331, when the reset force is adjusted by the adjusting handle, the first torsion arm 62 and the outer side of the first hinge shaft 33 deflect synchronously, and after the first torsion arm 62 deflects to a certain angle, the first limiting member 34 blocks the rotation of the first torsion arm 62, so that the adjusting range of the deformation portion 61 is limited, and the phenomenon that the reset force of the door panel is too large or the reset elastic member 60 is damaged is avoided.

Referring to fig. 8, the elastic restoring member 60 further includes a second torsion arm 63 extending from the other end of the deformation portion 61; the second torsion arm 63 is accommodated in the second positioning slot 411; when the door panel or the window sash drives the second hinge shaft 41 to rotate, the second torsion arm 63 deflects along with the surface of the second hinge shaft 41, so as to drive the deformation part 61 to generate elastic deformation, thereby providing a reset force for the door panel.

Two ends of the deformation part 61 are respectively sleeved on the first convex pin part 333 and the second convex pin part 412; the first boss pin part 333 and the second boss pin part 412 limit the position of the deformation part 61, and prevent the first torque arm 62 or the second torque arm 63 from being twisted due to unbalanced stress caused by the deviation of the deformation part 61.

Referring to fig. 3, in order to reduce the friction between the fan connecting element 50 and the frame connecting element 20, the self-righting hinge 100 further includes a cushion ring 70 disposed between the first side support sleeve 22 and the middle support sleeve 52, or between the middle support sleeve 52 and the second side support sleeve 23.

In the embodiment, the door frame or the window frame is connected through the frame body connecting piece, the sash body connecting piece is connected with the door panel or the window sash, when the door panel is in a closed state, a preset angle is kept between the sash body connecting piece and the frame body connecting piece, when the door panel rotates to be opened, the second shaft body assembly deflects relative to the first shaft body assembly in a direction opposite to the preset direction, after the door panel is separated from the push and pull of a hand, the reset elastic piece drives the second shaft body assembly to deflect in the preset direction, and the sash body connecting piece rotates along with the second shaft body assembly, so that the door panel can be.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides an automatic hinge resets which characterized in that includes: the frame body connecting piece comprises a first shaft body assembly connected with the frame body connecting piece, a second shaft body assembly coaxially arranged with the first shaft body assembly, a fan body connecting piece connected with the second shaft body assembly, and a reset elastic piece respectively connected with the first shaft body assembly and the second shaft body assembly; the second shaft body assembly is freely and rotatably arranged relative to the first shaft body assembly, and the fan body connecting piece rotates along with the second shaft body assembly; the reset elastic piece is used for providing a driving force for the second shaft body assembly to deflect relative to the first shaft body assembly in a preset direction.

2. The automatic-return hinge according to claim 1, wherein said frame connecting member comprises a first connecting plate, a first side bushing connected to said first connecting plate, and a second side bushing connected to said first connecting plate; the first side branch sleeve and the second side branch sleeve are coaxially arranged, and a gap is arranged between the first side branch sleeve and the second side branch sleeve; the first shaft body assembly is connected with the first side supporting sleeve; the fan body connecting piece comprises a second connecting plate and a middle supporting sleeve connected with the second connecting plate; the middle supporting sleeve is arranged between the first side supporting sleeve and the second side supporting sleeve; the middle supporting sleeve and the first side supporting sleeve are coaxially arranged; the first shaft body assembly is movably arranged in the middle supporting sleeve in a penetrating mode; the second shaft body assembly is connected with the middle supporting sleeve and movably penetrates through the second side supporting sleeve; the reset elastic piece comprises a deformation part accommodated in the middle support sleeve; the deformation portion is located between the first shaft body assembly and the second shaft body assembly; when the second shaft body component rotates relative to the first shaft body component in the opposite direction of the preset direction, the elastic deformation amount of the deformation part is increased.

3. The automatic reset hinge according to claim 2, wherein the first shaft assembly comprises a first rotating shaft connected to the first side supporting sleeve, a second rotating shaft movably inserted into the first side supporting sleeve, and a first hinge shaft movably inserted into the first side supporting sleeve; a plurality of first clamping teeth are annularly distributed at one end of the first rotating shaft facing the second rotating shaft; the first rotating shaft is also provided with an outer through hole which penetrates through the first rotating shaft; a plurality of second clamping teeth are annularly distributed at one end of the second rotating shaft facing the first rotating shaft, and correspond to the first clamping teeth; the end part of the second rotating shaft is meshed with the end part of the first rotating shaft through the second clamping tooth and the first clamping tooth; one end of the second rotating shaft, which faces the first rotating shaft, is also provided with an adjusting hole; the adjusting holes are arranged corresponding to the outer through holes; the first hinge shaft and the second rotating shaft synchronously rotate; the first hinge shaft is movably arranged in the middle support sleeve in a penetrating way; the second shaft body assembly comprises a second hinge shaft connected with the middle support sleeve, and the second hinge shaft penetrates through the second side support sleeve; the deformation part is of a compression spring structure and is positioned between the first hinge shaft and the second hinge shaft.

4. The automatic reset hinge according to claim 3, wherein a first positioning groove is formed on the outer side of the first hinge shaft, and the extending direction of the first positioning groove corresponds to the axial direction of the first hinge shaft; the first hinge shaft is also provided with an annular groove surrounding the outer side; the first shaft body assembly further comprises a first limiting piece arranged on the first side supporting sleeve in a penetrating mode; the end part of the first limiting piece extends into the annular groove; the reset elastic piece also comprises a first torsion arm extending from one end of the deformation part; the first torsion arm is accommodated in the first positioning groove; the first torsion arm extends into the annular groove, and the tail end of the first torsion arm penetrates through the first hinge shaft.

5. The automatic reset hinge according to claim 4, wherein the second hinge shaft is provided with a second positioning groove; the extending direction of the second positioning groove corresponds to the axial direction of the second hinge shaft; the reset elastic piece also comprises a second torsion arm extending from the other end of the deformation part; the second torque arm is accommodated in the second positioning groove.

6. The automatic reset hinge according to claim 5, wherein a first boss portion extends from one end of the first hinge shaft toward the second hinge shaft; a second convex pin part extends from one end of the second hinge shaft facing the first hinge shaft; the two ends of the deformation part are respectively sleeved on the first convex pin part and the second convex pin part.

7. The self-return hinge according to claim 3, wherein said second hinge shaft has a boss portion extending toward one end of said first hinge shaft; one end of the first hinge shaft facing the second rotating shaft is provided with a sleeve hole corresponding to the boss part in shape; the boss portion is arranged in the sleeve hole in a penetrating mode.

8. The automatic reset hinge according to claim 3, wherein a first locking hole is formed at the outer side of the first rotating shaft; the first shaft assembly further comprises a first locking member mounted on the first side brace; the first locking piece penetrates through the first clamping hole.

9. The automatic reset hinge according to claim 3, wherein a second locking hole is provided on the outer side of the second hinge shaft; the second shaft assembly further comprises a second locking member mounted on the intermediate boss; the second locking piece penetrates through the second clamping hole.

10. The automatic reset hinge according to claim 2, wherein the first connecting plate is provided with a plurality of first mounting holes; and a plurality of second mounting holes are formed in the second connecting plate.

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