CN112196389A

CN112196389A - Lifting device assisting hinge to turn upwards and stop at will

Info

Publication number: CN112196389A
Application number: CN202011198471.XA
Authority: CN
Inventors: 刘卫星; 梁大伟; 吴辉; 张堂梁; 张钦
Original assignee: Guangdong Shunde Keyue Precision Hardware Manufacturing Co ltd
Current assignee: Guangdong Shunde Keyue Precision Hardware Manufacturing Co ltd
Priority date: 2020-10-31
Filing date: 2020-10-31
Publication date: 2021-01-08

Abstract

The invention discloses a lifting device for assisting a hinge to turn upwards and stop at will, which is applied to furniture and comprises a device main body fixed on a cabinet body, a fixed support fixed on a cabinet door, a lever and a connecting rod, wherein the lever and the connecting rod are connected with the device main body and the fixed support, two ends of the connecting rod are respectively movably hinged with the fixed support and one end of the lever, the other end of the lever is rotatably hinged with the device main body through a first rotating shaft, a cam is arranged at the hinged position of the lever and the device main body, the cam is fixedly connected with the lever, a roller is rotatably hinged on the device main body, the cam is abutted against the roller, and a force adjusting mechanism is also arranged on the device main body and is abutted against the roller. The lifting device is used for connecting the cabinet body and the cabinet door, the cabinet door can be stopped randomly in the opening process, and the structure of the lifting device is simpler.

Description

Lifting device assisting hinge to turn upwards and stop at will

Technical Field

The invention relates to the field of hinges, in particular to a lifting device for assisting a hinge to be turned upwards and stopped at will.

Background

In the furniture industry, in order to save the installation space of furniture, the cabinet door of the furniture is generally set to be an upturned door, and then the cabinet body and the cabinet door are connected through an upturned door hinge. In order to control the cabinet door to stop at will in the process of opening or closing, auxiliary devices are generally arranged on the cabinet body and the cabinet door and used for assisting the hinge to use, and the cabinet door can be stopped at will.

Taiwan patent publication No. TW201814129A discloses an actuating device for a lifting system, the actuating device comprising a fixed plate connected to a furniture body, a support lever for connection to a door leaf, the support lever being connected to the fixed plate at a fulcrum so that the support lever can swing, the support lever being provided at the fulcrum with a connection point, the connection point being connected with a connection lever, one end of the connection lever being coupled to a resilient mechanism, one end of the connection lever being provided with a cam, the support lever being connected to the door leaf via an arm.

Although the door leaf can be stopped freely in the process of opening or closing the door leaf, the door leaf can be connected with the elastic mechanism only through the arm part, the supporting lever, the connecting lever and the cam, the structure is complex, and the acting force of the actuating device on the door leaf can act on the door leaf only through the cam, the connecting lever, the supporting lever and the arm part.

Disclosure of Invention

The invention aims to provide a lifting device for assisting a hinge to be turned upwards and stopped randomly.

The technical scheme is as follows:

the utility model provides a lifting device who stops at will turns over on supplementary hinge, is applied to furniture, including being fixed in the device main part on the cabinet body, being fixed in the fixed bolster on the cabinet door, still including connecting the lever and the connecting rod of device main part and fixed bolster, the both ends of connecting rod respectively with the one end activity hinge joint of fixed bolster and lever, the other end of lever through first rotation axis with the device main part is rotatory articulated, the lever with the articulated department of device main part is provided with the cam, the cam with lever fixed connection, rotatory hinge joint has the gyro wheel in the device main part, the cam with the gyro wheel offsets, still be equipped with dynamics adjustment mechanism in the device main part, dynamics adjustment mechanism with the gyro wheel offsets.

The force adjusting mechanism comprises an elastic adjusting assembly and a pushing assembly, the pushing assembly is connected with the elastic adjusting assembly, the roller is connected with the elastic adjusting assembly, and the elastic adjusting assembly is connected with the device main body in a sliding mode.

The elastic adjusting assembly comprises a first spring sleeve, a second spring sleeve and at least one spring, the first spring sleeve, the second spring sleeve and the at least one spring are oppositely arranged, the spring is located between the first spring sleeve and the second spring sleeve, the spring is respectively abutted against one end of the first spring sleeve and one end of the second spring sleeve, and the roller is rotatably hinged to the other end, opposite to the spring, of the first spring sleeve through a second rotating shaft.

The promotion subassembly is including adjusting seat, adjusting bolt and regulating block, adjust the seat with device main part fixed connection, be equipped with a circle tooth on adjusting bolt's the nut, the nut rotation set up in on the regulation seat, adjusting bolt with regulating block threaded connection, the regulating block with the second spring housing links to each other, be equipped with on the regulation seat with the outside communicating regulation hole of device main part, the tooth of nut is located one side of regulation hole.

The promotion subassembly includes adjusting seat, adjusting bolt, regulating block and worm, adjust the seat with device main part fixed connection, be equipped with a circle of tooth on adjusting bolt's the nut, the nut rotatory set up in on adjusting the seat, adjusting bolt with regulating block threaded connection, the regulating block with the second spring housing links to each other, the one end activity of worm set up in the device main part, the spiral tooth of worm with the tooth meshes mutually.

The spring is two, be equipped with the first holding tank of two relative settings on the first spring housing, be equipped with the second holding tank of two relative settings on the second spring housing, two the both ends of spring hold respectively in relative first holding tank, second holding tank.

The device is characterized in that a damping mechanism is further arranged on the device main body and comprises a damper, a damping seat and a damping stop block, the damper is fixed on the damping seat, the damping stop block is arranged opposite to the damping seat, one end of an oil cylinder shaft of the damper is fixed on the damping stop block, and the lever abuts against the damping seat in the closing process of the cabinet door.

The damping seat is provided with a first groove, the inner wall of one side of the first groove is an inclined plane, one end of the inclined plane inclines from the opening part of the first groove to the bottom of the first groove, and at least part of the cam is positioned in the first groove.

The one end of connecting rod is equipped with fast-assembling subassembly, fast-assembling subassembly includes slider and first elastic component at least, the one end of connecting rod is equipped with the joint breach, the slider with connecting rod sliding connection, first elastic component is fixed in on the connecting rod, first elastic component with the slider offsets, the one end of slider is equipped with the buckle, be equipped with first dead lever on the fixed bolster, first dead lever is located the buckle with between the bottom of joint breach.

The slider at least comprises a first side plate and a second side plate, the connecting rod is located between the first side plate and the second side plate, the first side plate and the second side plate are respectively provided with a limiting groove which is arranged oppositely, a limiting rod is fixed on the connecting rod, the slider is movably connected with the connecting rod through the limiting groove and the limiting rod, and a pushing part is arranged on the first side plate of the slider.

The following illustrates the advantages or principles of the invention:

when the lifting device is applied to furniture, the lever swings along with the cabinet door in the process of opening or closing the cabinet door relative to the cabinet body, the lever drives the cam to rotate in the swinging process, and the roller runs along the track of the cam surface and generates a moment which is increased or decreased along with the change of the track of the cam surface in the rotating process of the cam. When the cabinet door is opened, the moment generated by the roller to the cam can be increased, and when the cabinet door is closed, the moment generated by the roller to the cam can be reduced. Simultaneously because the effect of gravity, when the cabinet door upwards opened, the moment of lifting can increase, and when the cabinet door was closed, the moment of lifting can reduce. The moment generated by the roller to the cam is transmitted to the lever, the moment of the lever is the lifting moment, and the lifting moment is balanced or equal to the moment of the cabinet door sinking due to gravity through the force adjusting device, so that the cabinet door can be stopped at any angle. The lifting device is simple in structure, and the cabinet door can be stopped at any angle.

Drawings

FIG. 1 is a first schematic structural diagram of a lifting device according to a first embodiment;

FIG. 2 is a second schematic structural view of the lifting apparatus of the first embodiment;

FIG. 3 is an exploded view of the lifting device of the first embodiment;

FIG. 4 is a schematic view of the lifting device of the first embodiment in a closed state;

FIG. 5 is a schematic view of the lifting device of the first embodiment in a closed 18 position;

FIG. 6 is a schematic view showing an opened state of the lifting device of the first embodiment;

FIG. 7 is a schematic view of the lifting device of the first embodiment in a state where the cabinet door is opened when in use;

FIG. 8 is a schematic view of the first embodiment of the lifting device when the cabinet door is closed in use;

FIG. 9 is a schematic view of the combination of the adjusting bolt and the adjusting block of the first embodiment;

FIG. 10 is an exploded view of the link and quick mount assembly of the first embodiment;

FIG. 11 is a schematic structural view of a damper base of the first embodiment;

FIG. 12 is a schematic structural view of a cam and a roller of the first embodiment;

FIG. 13 is a schematic view showing the internal structure of a lifting apparatus of the second embodiment;

description of reference numerals:

10. a device main body; 20. fixing a bracket; 30. a lever; 40. a connecting rod; 11. an upper housing; 12. a lower housing; 13. a first cushion block; 14. a second cushion block; 31. a first rotating shaft; 32. a first connecting plate; 33. a second connecting plate; 50. a cam; 60. a roller; 70. an elastic adjustment assembly; 80. a pushing assembly; 71. a first spring housing; 72. a second spring housing; 73. a spring; 711. a first accommodating groove; 721. a second accommodating groove; 712. a roller accommodating cavity; 81. adjusting the bolt; 82. an adjusting block; 83. a first adjusting seat; 84. a second adjusting seat; 841. a second bolt receiving cavity; 85. a gear; 86. an adjustment hole; 90. a damping mechanism; 91. a damper; 92. a damping seat; 93. a damping stop block; 921. a first groove; 922. a bevel; 100. fast assembly; 101. a slider; 102. a first elastic member; 1011. a first side plate; 1012. a second side plate; 1013. a limiting groove; 103. a limiting rod; 1014. a pushing part; 104. fixing grooves; 105. a first bushing; 106. a second bushing; 107. clamping the notch; 1018. buckling; 21. a first fixing lever; 15. an observation tank; 16. a scale; 110. a worm.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "middle", "inner", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

The first embodiment:

as shown in fig. 1 to 12, the present invention discloses a lifting device for assisting a hinge to be turned up and stopped freely in this embodiment, which is generally applied to furniture. The lifting device comprises a device main body 10 fixed on the cabinet body, a fixed bracket 20 fixed on the cabinet door, a lever 30 and a connecting rod 40 for connecting the device main body 10 and the fixed bracket 20. The device main part 10 includes upper casing 11 and lower casing 12, and upper casing 11 and lower casing 12 equipment cooperation, go up casing 11 and lower casing 12 equipment back, go up and form between casing 11 and the lower casing 12 and hold the cavity.

One end of the connecting rod 40 is movably hinged with the fixed bracket 20, and the other end of the connecting rod 40 is movably hinged with one end of the lever 30. A first cushion block 13 and a second cushion block 14 are fixed in the accommodating cavity, wherein the first cushion block 13 can be fixedly connected with the upper shell 11 through screws and the like, and the second cushion block 14 can be fixedly connected with the lower shell 12 through screws and the like. The other end of the lever 30 is rotatably hinged to the first cushion block 13 and the second cushion block 14 through a first rotating shaft 31, and the lever 30 is located between the first cushion block 13 and the second cushion block 14.

The lever 30 includes a first connecting plate 32 and a second connecting plate 33, the first connecting plate 32 and the second connecting plate 33 are disposed opposite to each other, and a gap is provided between the first connecting plate 32 and the second connecting plate 33. One end of the lever 30 is fixedly connected with a cam 50, the cam 50 is located between the first connecting plate 32 and the second connecting plate 33, and the cam 50 is also rotatably hinged with the first cushion block 13 and the second cushion block 14 through the first rotating shaft 31.

A roller 60 is provided on one side of the cam surface of the cam 50, and the roller 60 abuts against the cam 50. A force adjusting mechanism is also provided on the device body 10, and the force adjusting mechanism abuts against the roller 60.

The force adjusting mechanism comprises an elastic adjusting component 70 and a pushing component 80, the roller 60 is connected with the elastic adjusting component 70, the pushing component 80 is connected with the elastic adjusting component 70, and the elastic adjusting component 70 is connected with the roller 60. The elastic adjustment assembly 70 includes a first spring housing 71, a second spring housing 72, and two springs 73, which are disposed oppositely, the two springs 73 are respectively disposed between the first spring housing 71 and the second spring housing 72, and the two springs 73 respectively abut against one end of the first spring housing 71 and one end of the second spring housing 72.

In order to fix the two springs 73, two first receiving grooves 711 are formed in the first spring housing 71, two second receiving grooves 721 are formed in the second spring housing 72, and two ends of the two springs 73 are received in the first receiving grooves 711 and the second receiving grooves 721. Because the two springs 73 are fixed by the first receiving groove 711 and the second receiving groove 721, the two springs 73 can be guaranteed to always abut against the first spring sleeve 71 and the second spring sleeve 72, and meanwhile, in the process of adjusting the spring elasticity of the pushing assembly 80, the two springs 73 cannot be separated from the first spring sleeve 71 and the second spring sleeve 72.

In order to realize the connection between the roller 60 and the first spring housing 71, the other end of the first spring housing 71 opposite to the spring 73 is provided with a roller accommodating cavity 712, the roller 60 is rotatably hinged on the first spring housing 71 through a second rotating shaft, and the roller 60 is located in the roller accommodating cavity 712.

The first spring housing 71 and the second spring housing 72 of the present embodiment are slidably disposed between the pushing assembly 80 and the cam 50, and the first spring housing 71 and the second spring housing 72 are not fixedly connected to the upper housing 11 and the lower housing 12.

The pushing assembly 80 includes an adjusting seat, an adjusting bolt 81 and an adjusting block 82. Wherein, adjust the seat and include first regulation seat 83 and second regulation seat 84, first regulation seat 83 sets up with second regulation seat 84 is relative. The first adjusting seat 83 and the second adjusting seat 84 are respectively fixedly connected with the upper shell 11 and the lower shell 12 through screws and positioning sleeves.

The nut of the adjusting bolt 81 and at least a part of the head of the adjusting bolt 81 are rotatably disposed on the first adjusting seat 83 and the second adjusting seat 84. In order to realize the connection between the nut of the adjusting bolt 81 and at least a portion of the head of the adjusting bolt 81 and the first adjusting seat 83 and the second adjusting seat 84, a first bolt accommodating cavity is formed in the first adjusting seat 83, and a second bolt accommodating cavity 841 is formed in the corresponding position of the second adjusting seat 84. The first bolt accommodating cavity and the second bolt accommodating cavity 841 are identical in structure, the first bolt accommodating cavity and the second bolt accommodating cavity 841 are approximately in a T-shaped structure, and the nut of the adjusting bolt 81 and at least part of the head of the adjusting bolt 81 are respectively arranged in the first bolt accommodating cavity and the second bolt accommodating cavity 841.

When the first adjusting seat 83, the second adjusting seat 84 and the adjusting bolt 81 are fixedly connected, the first adjusting seat 83 is fixed with the upper shell 11 through the locating sleeve, then the nut of the adjusting bolt 81 and at least part of the head of the adjusting bolt 81 are arranged in the first bolt accommodating cavity, then the second adjusting seat 84 is arranged on the second adjusting seat 84, the nut of the adjusting bolt 81 and at least part of the head of the adjusting bolt 81 are arranged in the second bolt accommodating cavity 841 and are fixed through the locating sleeve, and then the first adjusting seat 83, the second adjusting seat and the upper shell 11 are fixedly connected with the lower shell 12 through screws.

The nut of the adjusting bolt 81 is provided with a ring of teeth, the adjusting bolt 81 is in threaded connection with the adjusting block 82, and the adjusting bolt 81 is also in threaded connection with the second spring sleeve 72. The adjusting block 82 is located between the adjusting base and the other end of the second spring housing 72, and the adjusting block 82 is connected with the second spring housing 72. The first adjusting seat 83 and the second adjusting seat 84 are respectively provided with an adjusting hole 86 communicated with the outer parts of the upper shell 11 and the lower shell 12, and the teeth of the screw cap are positioned at one side of the adjusting hole 86.

The teeth are directly arranged on the nut of the adjusting bolt 81 and are integrated with the adjusting bolt 81. The pushing assembly 80 may further include a gear 85, teeth are provided on the gear 85, and the gear 85 is fixed to a nut of the bolt.

When the elastic force of the spring 73 needs to be adjusted, a tool such as a screwdriver is inserted through the adjustment hole 86 to drive the teeth on the nut of the adjustment bolt 81, so as to drive the adjustment bolt 81 to rotate, and the adjustment bolt 81 drives the adjustment block 82 and the second spring sleeve 72 to move during the rotation process. Thereby adjusting the elastic force of the two springs 73 through the adjusting block 82 and the second spring housing 72.

In order to slow down the closing speed of the cabinet door, the damping mechanism 90 is further provided on the apparatus main body 10 in this embodiment. The damping mechanism 90 includes a damper 91, a damping seat 92 and a damping stopper 93, the damper 91 is fixed on the damping seat 92, the damping stopper 93 is arranged opposite to the damping seat 92, and one end of a cylinder shaft of the damper 91 is fixed on the damping stopper 93. The damping seat 92 is provided with a first groove 921, one side inner wall of the first groove 921 is an inclined plane 922, one end of the inclined plane 922 inclines from the opening part of the first groove 921 to the bottom of the first groove 921, at least part of the cam 50 is located in the first groove 921, and the interference of the damping seat 92 on the cam 50 is avoided due to the arrangement of the first groove 921 and the inclined plane 922.

In the closing stage of the cabinet door, the lever 30 is pressed against the damping seat 92 in the closing process, the damper 91 is a press-in type damper, and the closing speed of the cabinet door is reduced by the damper 91.

In order to achieve quick assembly of the connecting rod 40 with the fixing bracket 20, one end of the connecting rod 40 is provided with a quick assembly 100. The package assembly 100 at least comprises a slider 101 and a first elastic element 102, the slider 101 at least comprises a first side plate 1011 and a second side plate 1012, the connecting rod 40 is located between the first side plate 1011 and the second side plate 1012, the first side plate 1011 and the second side plate 1012 are respectively provided with a limiting groove 1013 which are oppositely arranged, a limiting rod 103 is fixed on the connecting rod 40, the slider 101 is slidably connected with the connecting rod 40 through the limiting groove 1013 and the limiting rod 103, and a pushing part 1014 is arranged on the first side plate 1011 of the slider 101. The link 40 is provided with a fixing groove 104, the first elastic member 102 is fixed in the fixing groove 104, the first elastic member 102 abuts against the slider 101, and preferably, the first elastic member 102 is a spring.

The package assembly 100 further includes a first bushing 105 and a second bushing 106, the first bushing 105 and the second bushing 106 are respectively connected to the connecting rod 40, the first bushing 105 and the second bushing 106 are used for sleeving the slide block 101 therein, and the pushing portion 1014 of the slide block 101 is located outside the first bushing 105 and the second bushing 106.

One end of the connecting rod 40, one end of the first bushing 105, and one end of the second bushing 106 are respectively provided with a corresponding clamping gap 107, one end of the slider 101 is provided with a buckle 1018, the fixing bracket 20 is provided with a first fixing rod 21, and the first fixing rod 21 is located between the buckle 1018 and the bottom of the clamping gap 107.

When the connecting rod 40 is connected with the fixing support 20, firstly, the slider 101 is pushed, the buckle 1018 on the slider 101 is moved towards the direction far away from the clamping gap 107, then the first fixing rod 21 is placed in the clamping gap 107, the slider 101 is loosened, the slider 101 moves under the action of the elastic force of the first elastic piece 102, the buckle 1018 moves towards the middle of the clamping gap 107, and therefore the first fixing rod 21 is fixed between the bottom of the clamping gap 107 and the buckle 1018, and the connecting rod 40 and the fixing support 20 are quickly connected and fixed. When the connecting rod 40 is separated from the fixing bracket 20, the sliding block 101 is pushed again.

In this embodiment, the upper housing 11 and/or the lower housing 12 are further provided with an observation slot 15, a scale 16 is provided on one side of the observation slot 15, and the moving distance of the second spring housing 72 can be observed through the observation slot 15 and the scale 16.

The lifting device of the embodiment is generally applied to furniture together with a hinge, during the process of opening or closing the cabinet door relative to the cabinet body, the lever 30 swings with the cabinet door, the lever 30 drives the cam 50 to rotate during the swinging, and during the rotation of the cam 50, the roller 60 runs along the track of the surface of the cam 50 and generates a moment which is increased or decreased along with the change of the track of the surface of the cam 50. When the cabinet door is opened, the moment generated by the roller 60 to the cam 50 can be increased, and when the cabinet door is closed, the moment generated by the roller 60 to the cam 50 can be reduced. Simultaneously because the effect of gravity, when the cabinet door upwards opened, the moment of lifting can increase, and when the cabinet door was closed, the moment of lifting can reduce. The moment generated by the roller 60 to the cam 50 is transmitted to the lever 30, the moment of the lever 30 is the lifting moment, and the lifting moment and the moment of the cabinet door sinking due to gravity are balanced or equal through the force adjusting device, so that the cabinet door can be stopped at any angle. The lifting device of the embodiment has a simple structure, and can realize that the cabinet door stops at any angle.

Second embodiment:

the present embodiment is explained below with reference to fig. 1 to 12.

This embodiment also discloses a lifting device for an auxiliary hinge to be turned up and stopped freely, as shown in fig. 13, which is different from the first embodiment in that:

the pushing assembly 80 of this embodiment includes an adjusting base, an adjusting bolt 81, an adjusting block 82 and a worm 110, the adjusting base and the adjusting block 82 are the same as those of the first embodiment, the adjusting base is fixedly connected with the device main body 10, a ring of teeth are arranged on the outer wall of a nut of the adjusting bolt 81, the nut is movably arranged on the adjusting base, the adjusting bolt 81 is in threaded connection with the adjusting block 82 and the second spring sleeve 72, the adjusting block 82 is fixedly connected with the second spring sleeve 72, one end of the worm 110 is movably arranged on the device main body 10, and spiral teeth of the worm 110 are meshed with the teeth.

When the elastic force of the spring 73 needs to be adjusted, the worm 110 is rotated to drive the adjusting bolt 81 to rotate, and the adjusting bolt 81 drives the adjusting block 82 and the second spring sleeve 72 to move in the rotating process, so that the elastic force of the spring 73 is adjusted.

The embodiments of the present invention are not limited thereto, and according to the above-mentioned contents of the present invention, the present invention can be modified, substituted or combined in other various forms without departing from the basic technical idea of the present invention.

Claims

1. The utility model provides a lifting device who stops at will turns over on supplementary hinge, be applied to on the furniture, including being fixed in the device main part on the cabinet body, be fixed in the fixed bolster on the cabinet door, its characterized in that still including connecting the lever and the connecting rod of device main part and fixed bolster, the both ends of connecting rod respectively with the one end activity hinge joint of fixed bolster and lever, the other end of lever through first rotation axis with the device main part is rotatory articulated, the lever with the articulated department of device main part is provided with the cam, the cam with lever fixed connection, rotatory articulated gyro wheel in the device main part, the cam with the gyro wheel offsets, still be equipped with dynamics adjustment mechanism in the device main part, dynamics adjustment mechanism with the gyro wheel offsets.

2. The lift device as claimed in claim 1, wherein the force adjusting mechanism comprises an elastic adjusting member and a pushing member, the pushing member is connected to the elastic adjusting member, the roller is connected to the elastic adjusting member, and the elastic adjusting member is slidably connected to the device body.

3. The lifting device for stopping at will when the auxiliary hinge is turned up as claimed in claim 2, wherein the elastic adjustment assembly comprises a first spring housing, a second spring housing and at least one spring, the first spring housing, the second spring housing and the at least one spring are oppositely arranged, the spring is located between the first spring housing and the second spring housing, the spring respectively abuts against one end of the first spring housing and one end of the second spring housing, and the roller is rotatably hinged to the other end of the first spring housing, which is opposite to the spring, through a second rotating shaft.

4. The lifting device for assisting the hinge to upturn and stop at will as claimed in claim 2, wherein the pushing assembly comprises an adjusting seat, an adjusting bolt and an adjusting block, the adjusting seat is fixedly connected with the device body, a ring of teeth is arranged on a nut of the adjusting bolt, the nut is rotatably arranged on the adjusting seat, the adjusting bolt is in threaded connection with the adjusting block, the adjusting block is connected with the second spring sleeve, an adjusting hole communicated with the outside of the device body is arranged on the adjusting seat, and the teeth of the nut are positioned at one side of the adjusting hole.

5. The lifting device for assisting the hinge to upturn and stop at will as claimed in claim 2, wherein the pushing assembly comprises an adjusting seat, an adjusting bolt, an adjusting block and a worm, the adjusting seat is fixedly connected with the device body, a ring of teeth are arranged on a nut of the adjusting bolt, the nut is rotatably arranged on the adjusting seat, the adjusting bolt is in threaded connection with the adjusting block, the adjusting block is connected with the second spring sleeve, one end of the worm is movably arranged on the device body, and spiral teeth of the worm are meshed with the teeth.

6. The device as claimed in claim 2, wherein the number of the springs is two, the first spring housing is provided with two first receiving slots disposed oppositely, the second spring housing is provided with two second receiving slots disposed oppositely, and two ends of the two springs are received in the first receiving slots and the second receiving slots respectively.

7. The lifting device for stopping freely the upward turning of the auxiliary hinge as claimed in any one of claims 1 to 6, wherein a damping mechanism is further provided on the device body, the damping mechanism comprises a damper, a damping seat and a damping stop, the damper is fixed on the damping seat, the damping stop is arranged opposite to the damping seat, one end of the damper cylinder shaft is fixed on the damping stop, and the lever abuts against the damping seat during the closing process of the cabinet door.

8. The lift device as claimed in claim 7, wherein the damping seat is provided with a first groove, one side of the inner wall of the first groove is an inclined slope, one end of the inclined slope is inclined from the opening of the first groove to the bottom of the first groove, and at least a part of the cam is located in the first groove.

9. The lifting device for stopping at will the hinge upturning as claimed in any one of claims 1 to 6, wherein one end of the connecting rod is provided with a quick assembly, the quick assembly comprises at least a sliding block and a first elastic member, one end of the connecting rod is provided with a clamping notch, the sliding block is slidably connected with the connecting rod, the first elastic member is fixed on the connecting rod, the first elastic member abuts against the sliding block, one end of the sliding block is provided with a buckle, the fixing bracket is provided with a first fixing rod, and the first fixing rod is located between the buckle and the bottom of the clamping notch.

10. The lifting device for assisting in freely stopping the hinge upward turning as claimed in claim 9, wherein the sliding block comprises at least a first side plate and a second side plate, the connecting rod is located between the first side plate and the second side plate, the first side plate and the second side plate are respectively provided with a limiting groove oppositely arranged, a limiting rod is fixed on the connecting rod, the sliding block is movably connected with the connecting rod through the limiting groove and the limiting rod, and the first side plate of the sliding block is provided with a pushing portion.