CN218970943U - Multipurpose cabinet door hinge - Google Patents

Abstract

The utility model discloses a multipurpose cabinet door hinge, a damping shaft pin is inserted through a shaft pin insertion hole, the left end and the right end of the rear part of a third straight arm part are respectively and rotatably connected to the front upper ends of two rear mounting plates, the left end and the right end of the middle part of a fourth folding arm part are respectively and rotatably connected to the inner sides of the upper parts of the two rear mounting plates, the left end and the right end of a torsion spring are respectively and fixedly connected to the two rear mounting plates, a torsion spring is sleeved outside the torsion spring, one end of the torsion spring extends backwards from the upper part of the torsion spring and is fixedly connected to the rear lower part of the fourth folding arm part, the other end of the torsion spring extends backwards from the lower part of the torsion spring and is hooked with the rear end of a tension spring, the front end of the tension spring passes through a mounting hole and is fixedly connected with the rear part of the second folding arm part, and a frame arm connecting seat can be detached and is fixedly mounted on the top of a frame hinge base. The utility model can flexibly install various hinge installation modes, is flexible and convenient to use, has good hinge opening and closing buffering performance, and reduces the damage of the door leaf caused by collision.

Description

Multipurpose cabinet door hinge

Technical Field

The utility model relates to the field of furniture accessories, in particular to a multipurpose cabinet door hinge.

Background

The hinge is installed in the door cabinet in three modes, namely a full cover, a half cover and an inner cover. The hinges on the market are generally only suitable for one of the modes, lack of flexibility in use, and meanwhile, the existing hinges are poor in buffering performance in the opening and closing process, so that the door leaves are easy to damage.

Disclosure of Invention

The utility model aims at: a multipurpose cabinet door hinge is provided to solve the above problems.

The technical scheme of the utility model is realized as follows:

the utility model provides a multipurpose cabinet door hinge, including door page or leaf base, frame page or leaf base, door page or leaf preceding arm, door page or leaf back arm, frame page or leaf preceding arm, frame page or leaf back arm, frame page or leaf arm connecting seat, door page or leaf arm connecting seat, attenuator, damping pivot, tension spring, torsion spring and torsional spring round pin, door page or leaf arm connecting seat include two front mounting panels that trend and vertical place, two front mounting panels alternate side by side fixed mounting in the top of door page or leaf base, door page or leaf preceding arm includes first straight arm and from the first arm that bends forward and downward bending of the front end of first straight arm extends, door page or leaf back arm includes second straight arm and from the second arm that bends backward and downward bending of the rear end of second straight arm extends, door page or leaf preceding arm includes third straight arm and from the first arm that bends forward and downward bending of the front end of third straight arm extends, the middle part of the third straight arm part is provided with a mounting notch for allowing the tension spring to pass through, the rear end of the mounting notch penetrates through the rear end of the third straight arm part, the frame page rear connecting arm comprises a fourth straight arm part and a fourth folding arm part which bends and extends backwards and downwards from the rear end of the fourth straight arm part, the frame page arm connecting seat comprises two rear mounting plates which extend forwards and backwards and are vertically arranged and a rear connecting top plate, the left end and the right end of the rear connecting top plate are respectively fixedly connected with the rear ends of the tops of the two rear mounting plates, the front end of the first folding arm part is rotationally connected with the front ends of the two front mounting plates, the front end of the second straight arm part is rotationally connected with the rear ends of the two front mounting plates, the front end of the third folding arm part is rotationally connected with the rear end of the first straight arm part through a damping shaft pin, the cylinder body swivelling joint of attenuator is in two the front portion of front mounting panel in between first arm and the straight arm of second, the output shaft of attenuator stretches out backward, just the rear end of the output shaft of attenuator is seted up and is gone towards left and right sides's pivot jack, damping pivot inserts and establishes and pass the pivot jack, the rear portion of the straight arm of second with the front portion swivelling joint of the straight arm of third, the rear end of the arm of second with the front end swivelling joint of the straight arm of fourth, the left and right sides at the rear portion of the arm of third respectively swivelling joint in two the front upper end of rear mounting panel, the left and right sides at the middle part of the arm of fourth respectively swivelling joint in between the upper portion inboard of rear connection roof and the straight arm of second, the left and right sides of torsional spring pin respectively rigid coupling in the below of the rear end of the straight arm of second, the torsional spring hook is located in the torsion sleeve the rear portion of the straight arm, the torsional spring hook is located the spring hook portion of the rear portion of the spring hook and the front end of the spring frame, the front end of the spring hook can be removed from the front end of the spring frame.

Preferably, the multipurpose cabinet door hinge further comprises a first front-rear fixing screw, the middle part of the frame page base is provided with a guide convex rail in a front-rear trend in an upward protruding mode, the frame page arm connecting seat is sleeved on the guide convex rail in a front-rear sliding mode through two rear mounting plates, a first front-rear fixing screw hole is formed in the guide convex rail, a rear connecting top plate is provided with a long first front-rear adjusting through hole extending in a front-rear direction above the first front-rear fixing screw hole, and the first front-rear fixing screw is inserted through the first front-rear adjusting through hole and is screwed and fixedly inserted into the first front-rear fixing screw hole.

Preferably, the multipurpose cabinet door hinge further comprises a tightening guide screw, the front part of the guide convex rail is recessed downwards to form a limit groove, the rear end of the limit groove is communicated with the lower part of the guide convex rail, the guide convex rail is provided with a guide groove hole extending front and back at the rear of the limit groove, the front end of the guide groove hole is hollowed out to form a guide opening communicated with the limit groove, the rear connecting top plate is provided with a guide nail screw hole at the front of the first front and back adjusting through hole, the lower part of the tightening guide screw is recessed inwards along the radial direction to form a guide clamping part, the diameter of the guide clamping part is consistent with the width of the guide groove hole, the tightening guide screw is rotatably inserted into the guide nail screw hole, and the guide clamping part can be inserted into the guide groove hole from a clamp moving back and forth of the guide opening.

Preferably, the multipurpose cabinet door hinge further comprises a tension spring pin, the rear connecting arm of the door leaf comprises two second straight arm blocks, two second folding arm blocks and a second connecting plate, the left end and the right end of the second connecting plate are respectively fixedly connected with the tops of the two second straight arm blocks to form the second straight arm parts, the two second folding arm blocks are respectively bent and extended backwards and downwards from the corresponding rear ends of the second straight arm blocks to form the second folding arm parts, the left end and the right end of the front part of the fourth straight arm parts are respectively connected with the rear ends of the two second folding arm blocks in a rotating mode, the left end and the right end of the tension spring pin are respectively fixedly connected with the front ends of the two second folding arm blocks, and the front ends of the tension spring are hooked on the tension spring pin.

Preferably, the fourth folding arm comprises a fourth left folding arm block and a fourth right folding arm block, the front end of the fourth left folding arm block is fixedly connected with the left rear end of the fourth straight arm, the front end of the fourth right folding arm block is fixedly connected with the right rear end of the fourth straight arm, the middle part of the fourth left folding arm block and the middle part of the fourth right folding arm block are respectively and rotatably connected between the upper inner sides of the two rear mounting plates and the third straight arm, the lower part of the right side wall of the fourth left folding arm block is provided with a left spring abutting block in a protruding mode to the right, the lower part of the left side wall of the fourth right folding arm block is provided with a right spring abutting block in a protruding mode to the left, the torsion spring comprises a left torsion spring and a right torsion spring, the left torsion spring and the right torsion spring are respectively sleeved on the left side and the right side of the torsion spring pin, one end of the left torsion spring extends backwards from the upper part of the left torsion spring and is connected with the upper part of the rear connecting top plate and the third straight arm block, the lower part of the torsion spring strip is formed by the left side of the hook strip is in a bending mode, and the lower part of the torsion spring is bent downwards from the left side of the hook strip is formed.

Preferably, a first included angle is formed between the second straight arm part and the second folded arm part, and the first included angle is 130-150 degrees; and a second included angle is formed between the third straight arm part and the third folding arm part, and the second included angle is equal to the first included angle.

Preferably, the damper is a hydraulic tension damper.

Preferably, the door leaf base is provided with a first front-rear adjusting hole in a shape of front-rear extending and a first left-right adjusting hole in a shape of left-right extending on the left side and the right side of the door leaf arm connecting seat, and the frame leaf base is provided with a second front-rear adjusting hole in a shape of front-rear extending and a second left-right adjusting hole in a shape of left-right extending on the left side and the right side of the frame leaf arm connecting seat.

Preferably, the multipurpose cabinet door hinge further comprises a frame page seat installation adjusting block, a second front-rear fixing screw and a second left-right fixing screw, the periphery of the frame page seat is downwards convexly arranged to form a frame page seat surrounding edge, the frame page seat installation adjusting block is detachably and fixedly arranged at the bottom of the frame page seat in the frame page seat surrounding edge, the frame page seat installation adjusting block is right opposite to the second front-rear adjusting hole and provided with a second front-rear fixing screw hole, the frame page seat installation adjusting block is right opposite to the second left-right adjusting hole and provided with a second left-right fixing screw hole, the second front-rear fixing screw penetrates through the second front-rear adjusting hole and is screwed and inserted into the second front-rear fixing screw hole, and the second left-right fixing screw penetrates through the second left-right adjusting hole and is screwed and inserted into the second left-right fixing screw hole.

Compared with the prior art, the multipurpose cabinet door hinge can flexibly install various hinge installation modes, is flexible and convenient to use, and meanwhile, the hinge is better in opening and closing buffering performance, so that door leaf damage caused by collision is effectively avoided.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a view showing the structure of the hinge of the multipurpose cabinet door according to the present utility model in an opened state at an angle.

Fig. 2 is an exploded view of fig. 1.

FIG. 3 is a view showing a second angle of the hinge open state of the multipurpose cabinet door of the present utility model.

Fig. 4 is a view showing a third angle of the hinge open state of the multipurpose cabinet door according to the present utility model.

Fig. 5 is an exploded view of fig. 4.

Fig. 6 is a block diagram of a tightening guide screw of the multipurpose cabinet door hinge of the present utility model.

Fig. 7 is a schematic structural view of a torsion spring of the multipurpose cabinet door hinge of the present utility model.

Fig. 8 is a partial block diagram of a multipurpose cabinet door hinge according to the present utility model.

Fig. 9 is a view showing a structure of the hinge of the multipurpose cabinet door of the present utility model in a closed state at an angle.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 9, the present utility model provides the following technical solutions: the multipurpose cabinet door hinge comprises a door leaf base 10, a frame leaf base 20, a door leaf front connecting arm 30, a door leaf rear connecting arm 40, a frame leaf front connecting arm 50, a frame leaf rear connecting arm 60, a frame leaf arm connecting seat 70, a door leaf arm connecting seat 80, a damper 90, a damping shaft pin 91, a tension spring 92, a torsion spring 94 and a torsion spring pin 95.

The hinge arm connecting seat 80 includes two front mounting plates 81 running back and forth and vertically disposed, and the two front mounting plates 81 are fixedly mounted on the top of the hinge base 10 in a left-right opposite manner.

The door leaf front link arm 30 includes a first straight arm portion 31 and a first hinge portion 32 extending from a front end of the first straight arm portion 31 to be bent forward and downward.

The door leaf rear link arm 40 includes a second straight arm portion 41 and a second folded arm portion 42 bent and extended backward and downward from a rear end of the second straight arm portion 41.

The frame front arm 50 includes a third straight arm portion 51 and a third hinge portion 52 extending from a front end of the third straight arm portion 51 to be bent downward. The middle part of the third straight arm part 51 is provided with a mounting notch 511 for allowing the tension spring 92 to pass through, and the rear end of the mounting notch 511 penetrates through the rear end of the third straight arm part 51.

The frame rear link arm 60 includes a fourth straight arm portion 61 and a fourth folded arm portion 62 extending from the rear end of the fourth straight arm portion 61 to be bent downward.

The frame arm connection base 70 comprises two front and rear mounting plates 71 and a rear connection top plate 72, wherein the rear mounting plates 71 are vertically arranged in a front-back direction. The left and right ends of the rear connecting top plate 72 are fixedly connected to the rear ends of the tops of the two rear mounting plates 71, respectively. The front ends of the first folding arm portions 32 are rotatably connected to the front ends of the two front mounting plates 81, the front ends of the second straight arm portions 41 are rotatably connected to the rear ends of the two front mounting plates 81, and the front ends of the third folding arm portions 52 are rotatably connected to the rear ends of the first straight arm portions 31 via the damper shaft pins 91. The cylinder 901 of the damper 90 is rotatably connected to the front portions of the two front mounting plates 81 between the first folded arm portion 32 and the second straight arm portion 41. The output shaft 902 of the damper 90 extends backward, the rear end of the output shaft 902 of the damper 90 is provided with a left-right shaft pin insertion hole 903, and the damping shaft pin 91 is inserted through the shaft pin insertion hole 903. The rear part of the second straight arm 41 is rotatably connected to the front part of the third straight arm 51, the rear end of the second folded arm 42 is rotatably connected to the front end of the fourth straight arm 61, the left and right ends of the rear part of the third straight arm 51 are rotatably connected to the front upper ends of the two rear mounting plates 71, the left and right ends of the middle part of the fourth folded arm 62 are rotatably connected between the rear connecting top plate 72 and the third straight arm 51 inside the upper parts of the two rear mounting plates 71, the left and right ends of the torsion spring pin 95 are fixedly connected to the two rear mounting plates 71 below the rear ends of the third straight arm 51, the torsion spring 94 is sleeved outside the torsion spring pin 95, one end of the torsion spring 94 extends rearward from the upper part of the torsion spring 94 and is fixedly connected to the rear lower part of the fourth folded arm 62, the other end of the torsion spring 94 extends rearward from the lower part of the torsion spring 94 and is fixedly connected to the rear end 92 of the rear hinge plate, the tension hook 92 can be connected to the front end of the front frame 20, and the front frame can be detached from the front frame base and the front end of the torsion spring 92 is fixedly connected to the front frame 20.

Specifically, the fourth folding arm 62 includes a fourth left folding arm block 621 and a fourth right folding arm block 622, the front end of the fourth left folding arm block 621 is fixedly connected with the left rear end of the fourth straight arm 61, the front end of the fourth right folding arm block 622 is fixedly connected with the right rear end of the fourth straight arm 61, the middle part of the fourth left folding arm block 621 and the middle part of the fourth right folding arm block 622 are respectively rotatably connected between the rear connecting top plate 72 and the third straight arm 51 on the inner side of the upper part of the two rear mounting plates 71, a left spring abutment 6211 is convexly provided to the right on the rear lower part of the right side wall of the fourth left folding arm block 621, and a right spring abutment 6221 is convexly provided to the left on the rear lower part of the left side wall of the fourth right folding arm block 622. The torsion spring 94 includes a left torsion spring 941 and a right torsion spring 942, the left torsion spring 941 and the right torsion spring 942 are respectively sleeved on the left side and the right side of the torsion spring pin 95, one end of the left torsion spring 941 extends backwards from the upper portion of the left torsion spring 941 and is in pressing connection with the bottom of the left spring supporting block 6211, the other end of the left torsion spring 941 extends backwards from the lower portion of the left torsion spring 941 to form a left hook 9411, one end of the right torsion spring 942 extends backwards from the upper portion of the right torsion spring 942 and is in pressing connection with the bottom of the right spring supporting block 6221, the other end of the right torsion spring 94 extends backwards from the lower portion of the right torsion spring 942 to form a right hook 9421, the left hook 9411 is integrally connected with the right hook 9421 to form a tension spring hook 943, and the rear portion of the tension spring hook 943 is bent upwards.

Preferably, the multipurpose cabinet door hinge further includes a first front-rear fixing screw 75, a guide protruding rail 21 extending forward and backward is protruding upward from the middle of the frame base 20, the frame arm connecting seat 70 is sleeved on the guide protruding rail 21 by two front-rear mounting plates 71 in a sliding manner, a first front-rear fixing screw hole 211 is formed in the guide protruding rail 21, a long first front-rear adjusting through hole 721 extending forward and backward is formed above the first front-rear fixing screw hole 211 in the rear connecting top plate 72, and the first front-rear fixing screw 75 is inserted through the first front-rear adjusting through hole 721 and screwed and fixedly inserted into the first front-rear fixing screw hole 211.

Preferably, the multipurpose cabinet door hinge further includes a tightening guide screw 97, the front portion of the guide protruding rail 21 is recessed downward to form a limit groove 212, the rear end of the limit groove 212 is connected with the lower portion of the guide protruding rail 21, a guide slot 213 extending front and back is formed in the rear of the guide protruding rail 21 in the limit groove 212, a guide opening 2131 connected with the limit groove 212 is formed in the front hollow of the guide slot 213, a guide screw hole 722 is formed in the front of the first front and rear adjusting through hole in the rear connecting top plate 72, a guide clamping portion 971 is formed in the lower portion of the tightening guide screw 97 in a recessed manner along the radial direction, the diameter of the guide clamping portion 971 is consistent with the width of the guide slot 213, the tightening guide screw 97 is rotatably inserted into the guide screw hole 722, and the guide clamping portion 971 can be blocked and inserted into the guide slot 213 from the guide opening 2131.

Preferably, the multipurpose cabinet door hinge further includes a tension spring pin 93, the door hinge rear connecting arm 40 includes two second straight arm blocks 401, two second folding arm blocks 402 and a second connecting plate 403, the left and right ends of the second connecting plate 403 are respectively fixedly connected with the tops of the two second straight arm blocks 401 to form the second straight arm portions 41, the two second folding arm blocks 402 respectively bend and extend backwards and downwards from the corresponding rear ends of the second straight arm blocks 401 to form the second folding arm portions 42, the left and right ends of the front portion of the fourth straight arm portion 61 are respectively rotatably connected with the rear ends of the two second folding arm blocks 402, the left and right ends of the tension spring pin 93 are respectively fixedly connected with the front ends of the two second folding arm blocks 402, and the front ends of the tension spring 92 are hooked on the tension spring pin 93. In this embodiment, the middle portion of the second connecting plate 403 is recessed downward to form a torsion spring limiting slot 4031.

Preferably, the fourth folding arm portion 62 includes two fourth folding arm blocks 621, the two fourth folding arm blocks 621 respectively extend from the rear left end and the rear right end of the fourth straight arm portion 61 in a backward and downward bending manner, the middle portions of the two fourth folding arm blocks 621 are respectively rotatably connected to the inner sides of the upper portions of the two rear mounting plates 71, the inner side walls of the rear lower portions of the fourth folding arm blocks 621 are respectively provided with torsion spring supporting blocks 6211 protruding inwards above the torsion spring pins 95, and one end of the torsion spring 94 is elastically pressed against the bottom of the torsion spring supporting blocks 9211.

Preferably, a first included angle is formed between the second straight arm portion and the second folded arm portion 42, and the first included angle is 130 degrees to 150 degrees; a second included angle is formed between the third straight arm portion 51 and the third folded arm portion 52, and the second included angle is equal to the first included angle.

Preferably, the damper 90 is a hydraulic tension damper.

Preferably, the door leaf base 10 has a first front-rear adjusting hole 11 in a shape of a front-rear extension and a first left-right adjusting hole 12 in a shape of a left-right extension on the left and right sides of the door leaf arm connecting base 80, and the frame leaf base 20 has a second front-rear adjusting hole 22 in a shape of a front-rear extension and a second left-right adjusting hole 23 in a shape of a left-right extension on the left and right sides of the frame leaf arm connecting base 70.

Preferably, the multipurpose cabinet door hinge further includes a frame seat mounting adjusting block 96, a second front-rear fixing screw 98, and a second left-right fixing screw (not shown), the periphery of the frame seat base 20 is downward protruded to form a frame seat surrounding edge 24, the frame seat mounting adjusting block 96 is detachably and fixedly mounted at the bottom of the frame seat base 20 in the frame seat surrounding edge 24, the frame seat mounting adjusting block 96 is opposite to the second front-rear adjusting hole 22 and is provided with a second front-rear fixing screw hole 961, and the frame seat mounting adjusting block 96 is opposite to the second left-right adjusting hole 23 and is provided with a second left-right fixing screw hole 962. The second front-rear fixing screw 98 passes through the second front-rear adjusting hole 22 and is screwed into the second front-rear fixing screw hole 961, and the second left-right fixing screw passes through the second left-right adjusting hole 23 and is screwed into the second left-right fixing screw hole 962.

When the multipurpose cabinet door hinge is used, the door leaf base 10 is fixedly arranged on the inner side wall of the door, the frame leaf base 20 is fixedly arranged on the inner side wall of the cabinet, and the door can be rotated to be opened and closed by pulling the door. The front and rear positions of the hinge arm connecting base 70 with respect to the hinge base 20 can be flexibly adjusted by unscrewing the first front and rear fixing screws 75, so that various hinge mounting modes, such as full cover, half cover or inner cover, can be flexibly mounted. Meanwhile, since the frame arm connecting seat 70 is detachably and fixedly mounted on the top of the frame base 20, the frame base 20 can be mounted to the inner side wall of the cabinet, and then the frame arm connecting seat 70 is fixedly mounted on the frame base 20, so that the assembly and the disassembly are flexible and convenient. In addition, the damper 90 combines the tension spring 92 and the torsion spring 94 to enable the hinge to be better in opening and closing buffering performance, and door leaf damage caused by collision is effectively avoided.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a multi-purpose cabinet door hinge which characterized in that: the door leaf connecting seat comprises two front mounting plates which run forwards and backwards and are vertically arranged, the two front mounting plates are fixedly arranged at the top of the door leaf base left and right, the door leaf front connecting arm comprises a first straight arm part and a first folding arm part which extends forwards and downwards in a bending mode from the front end of the first straight arm part, the door leaf rear connecting arm comprises a second straight arm part and a second folding arm part which extends downwards in a bending mode from the rear end of the second straight arm part, the frame leaf front connecting arm comprises a third straight arm part and a third folding arm part which extends downwards in a bending mode from the front end of the third straight arm part, the middle part of the third straight arm part is provided with a mounting notch which is used for allowing the tension spring to pass through, the rear end of the mounting notch penetrates through the front end of the first straight arm part and is connected with the front end of the fourth folding arm part, the front end of the frame is connected with the front mounting plate in a bending mode from the front end of the second straight arm part, the front end of the frame leaf rear connecting arm part is connected with the front end of the fourth straight arm part, the front end of the frame leaf connecting arm part is connected with the front end of the fourth folding arm part, the front end of the frame connecting arm part is connected with the front end of the fourth folding arm part is connected with the front end of the front mounting plate, the front end of the fourth folding arm part is connected with the front end of the front panel, the front end of the front panel is connected with the front end of the front panel, the front panel is connected with front end of the front panel, and the front panel is connected with front and the front panel, and the front panel is connected with front and is connected with front. The cylinder body swivelling joint of attenuator is in two the front portion of front mounting panel in between first arm and the straight arm of second, the output shaft of attenuator stretches out backward, just the rear end of the output shaft of attenuator is seted up and is gone towards left and right sides's pivot jack, damping pivot inserts and establishes and pass the pivot jack, the rear portion of the straight arm of second with the front portion swivelling joint of the straight arm of third, the rear end of the arm of second with the front end swivelling joint of the straight arm of fourth, the left and right sides at the rear portion of the arm of third respectively swivelling joint in two the front upper end of rear mounting panel, the left and right sides at the middle part of the arm of fourth respectively swivelling joint in between the upper portion inboard of rear connection roof and the straight arm of second, the left and right sides of torsional spring pin respectively rigid coupling in the below of the rear end of the straight arm of second, the torsional spring hook is located in the torsion sleeve the rear portion of the straight arm, the torsional spring hook is located the spring hook portion of the rear portion of the spring hook and the front end of the spring frame, the front end of the spring hook can be removed from the front end of the spring frame.

2. The multipurpose cabinet door hinge of claim 1, wherein: the novel hinge comprises a hinge body, and is characterized by further comprising a first front-rear fixing screw, wherein the middle of the hinge body is provided with a guide convex rail in a protruding mode, the front-rear trend of the guide convex rail is upwards protruding, the hinge body is sleeved on the guide convex rail in a sliding mode through two rear mounting plates, a first front-rear fixing screw hole is formed in the guide convex rail, a long-shaped first front-rear adjusting through hole extending forwards and backwards is formed in the upper portion of the first front-rear fixing screw hole, and the first front-rear fixing screw is inserted and penetrates through the first front-rear adjusting through hole and is screwed and fixedly inserted into the first front-rear fixing screw hole.

3. The multipurpose cabinet door hinge of claim 2, wherein: the novel guide screw tightening device is characterized by further comprising a tightening guide screw, the front part of the guide convex rail is recessed downwards to form a limit groove, the rear end of the limit groove is communicated with the lower part of the guide convex rail, the guide convex rail is provided with a guide groove hole extending front and back at the rear of the limit groove, the front end of the guide groove hole is hollowed out to form a guide opening communicated with the limit groove, a guide screw hole is formed in the front of the first front-rear adjusting through hole, the lower part of the tightening guide screw is recessed inwards in the radial direction to form a guide clamping part, the diameter of the guide clamping part is consistent with the width of the guide groove hole, the tightening guide screw is screwed and inserted into the guide screw hole, and the guide clamping part can be inserted into the guide groove hole from a clamp moving back and forth of the guide opening.

4. The multipurpose cabinet door hinge of claim 1, wherein: the door leaf rear connecting arm comprises a first straight arm block, a first connecting plate, a second straight arm block, a second connecting plate, a tension spring pin and a tension spring.

5. The multipurpose cabinet door hinge of claim 1, wherein: the four-folding arm comprises a fourth left-folding arm block and a fourth right-folding arm block, the front end of the fourth left-folding arm block is fixedly connected with the left rear end of the fourth straight arm, the front end of the fourth right-folding arm block is fixedly connected with the right rear end of the fourth straight arm, the middle part of the fourth left-folding arm block and the middle part of the fourth right-folding arm block are respectively and rotatably connected between the two rear connecting top plates and the third straight arm, the lower rear part of the right side wall of the fourth left-folding arm block is provided with a left spring abutting block in a protruding mode, the lower rear part of the left side wall of the fourth right-folding arm block is provided with a right spring abutting block in a protruding mode in a left mode, the torsion spring comprises a left torsion spring and a right torsion spring, one end of the left torsion spring extends backwards from the upper part of the left torsion spring and is connected with the bottom of the left spring abutting block, the other end of the torsion spring is pressed downwards from the left side of the hook strip to the right side of the hook strip, and the hook strip is formed downwards from the other end of the left side of the hook strip to the right side of the hook strip.

6. The multipurpose cabinet door hinge of claim 1, wherein: a first included angle is formed between the second straight arm part and the second folded arm part, and the first included angle is 130-150 degrees; and a second included angle is formed between the third straight arm part and the third folding arm part, and the second included angle is equal to the first included angle.

7. The multipurpose cabinet door hinge of claim 1, wherein: the damper is a hydraulic tension damper.

8. The multipurpose cabinet door hinge of claim 1, wherein: the door leaf base is provided with a first front-back adjusting hole and a first left-right adjusting hole, wherein the first front-back adjusting hole is in a shape of a front-back extending rod, the first left-right adjusting hole is in a shape of a left-right extending rod, the door leaf base is provided with a second front-back adjusting hole and a second left-right adjusting hole are in a shape of a left-right extending rod, the second front-back adjusting hole is in a shape of a front-back extending rod, and the second left-right adjusting hole is in a shape of a left-right extending rod, the second front-back adjusting hole is in a shape of a left-right extending rod, and the left-right adjusting hole is in a shape of the frame leaf arm connecting seat.

9. The multipurpose cabinet door hinge of claim 8, wherein: the frame page seat mounting adjusting block is arranged at the bottom of the frame page seat base in the surrounding edge of the frame page seat, the frame page seat mounting adjusting block is opposite to the second front-rear adjusting hole, a second front-rear fixing screw hole is arranged at the second front-rear adjusting hole, the second front-rear fixing screw penetrates through the second front-rear adjusting hole and is inserted into the second front-rear fixing screw hole in a screwing mode, and the second left-right fixing screw penetrates through the second left-right adjusting hole and is inserted into the second left-right fixing screw hole in a screwing mode.

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