CN211287167U

CN211287167U - Simple furniture upturning device

Info

Publication number: CN211287167U
Application number: CN201921806654.8U
Authority: CN
Inventors: 伍志勇
Original assignee: Guangdong DTC Hardware Precision Manufacturing Co Ltd
Current assignee: Guangdong DTC Hardware Precision Manufacturing Co Ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-08-18
Anticipated expiration: 2029-10-24

Abstract

The utility model provides a simple and easy furniture turns over device on, including the thrust element, the link arm subassembly, fixed component and damping subassembly, the thrust element is articulated each other with fixed component through the link arm subassembly, the last pressure spring that is provided with of fixed component, the thrust element passes through pressure spring elasticity upset switching on fixed component, the thrust element is the U-shaped, and by metal material integrated into one piece, its front portion is provided with preceding breach portion, preceding breach portion top is provided with middle switching portion, and articulated with the link arm subassembly through middle switching portion, the thrust element rear portion is provided with back breach portion, be provided with the effect portion in the back breach portion, and through effect portion and damping subassembly interact. The utility model discloses an above-mentioned structure's improvement has simple structure rationally, safe and reliable, easy production, and easy the realization is adjusted swiftly, convenient operation, and the location is accurate, long service life, switching process smoothness, smooth and easy, laborsaving, the collision is little, the noise is low and application range characteristics such as wide, and the practicality is strong.

Description

Simple furniture upturning device

Technical Field

The utility model relates to a simple furniture upturning device.

Background

Chinese patent document No. CN202039710U discloses an upturned door hinge at 11/16/2011, in which a curved end of a first rotating arm is rotatably connected to a base plate, a curved end of a second rotating arm is rotatably connected to the base plate, two ends of a connecting arm, which can be simultaneously overlapped with respective straight ends of the first rotating arm and the second rotating arm, are rotatably connected to respective straight ends of the first rotating arm and the second rotating arm, the connecting arm is located between the first rotating arm and the second rotating arm, the curved end of the first rotating arm is hinged to a free end of a movable rod of an air rod, a fixed rod of the air rod is movably connected to the base plate, and the base plate is further provided with an elastic component having a collision portion, which elastically collides with the corner portion after the second rotating arm rotates. The structure can reduce noise, the closing movement or the opening movement of the cabinet door is more flexible, and the cabinet door moves integrally in a translational manner in the movement process, so that the condition that the common cabinet door can collide the head can be avoided; however, this upturning door hinge only realizes the damping through elastic component, and is bulky, and high in production cost also can occupy cabinet body inside more space when using, and the parking position that leads to the cabinet body is less, and the power that elastic component produced can't reach even effect when closed motion or opening movement, and this elastic component frictional force is big when the articulated switching of upturning door, the noise is high, and the phenomenon of displacement appears very easily in the use of reality, lead to the damping inefficacy, the damping force of buffering still does not have regulatory function simultaneously, can not satisfy user's user demand. Therefore, further improvements are necessary.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure is reasonable, safe and reliable, easy production, and easy the realization is adjusted swiftly, convenient operation, and the location is accurate, long service life, switching process level and smooth and easy, laborsaving, the collision is little, the noise is low and application range is wide simple and easy furniture turns over the device on to overcome the weak point among the prior art.

According to a simple and easy furniture of this purpose design device that turns over on, including pushing element, connection arm subassembly and fixed component, pushing element is articulated each other through connecting arm subassembly and fixed component, is provided with the pressure spring on the fixed component, and pushing element passes through the switching of pressure spring elasticity on fixed component, its characterized in that: the damping device also comprises a damping component; the pushing element is U-shaped and integrally formed by metal materials, a front notch portion is arranged at the front portion of the pushing element, a middle switching portion is arranged above the front notch portion and hinged with the connecting arm assembly through the middle switching portion, a rear notch portion is arranged at the rear portion of the pushing element, and an acting portion is arranged on the rear notch portion and interacts with the damping assembly through the acting portion.

The pushing element comprises a left side wall, a right side wall and a bottom wall, wherein the left side wall, the right side wall and the bottom wall are integrally formed by bending metal materials and mutually form a U shape; the front notch part is arranged at the front part of the bottom wall, and the middle adapter part is positioned above the front notch part and is arranged at the middle position of the left side wall and the right side wall; the front end of the left side wall and the right side wall is provided with a front switching part and is hinged with a hinge element through the front switching part, and the rear end of the left side wall and the right side wall is provided with a rear switching part and is hinged with the connecting arm assembly through the rear switching part.

The connecting arm assembly comprises a first connecting arm, a second connecting arm and a third connecting arm; one end of the first connecting arm is hinged with the middle part of the hinge element, the other end of the first connecting arm is hinged with one end of the second connecting arm, the middle part of the second connecting arm is hinged with the middle switching part, the other end of the second connecting arm is hinged with the fixed element, one end of the third connecting arm is hinged with the rear switching part, the middle part of the third connecting arm interacts with the pressure spring, and the other end of the third connecting arm is hinged with the fixed element; the hinge element is elastically turned over and opened on the fixed element through the matching of the pushing element, the first connecting arm, the second connecting arm, the third connecting arm and the pressure spring, and is turned over and closed on the fixed element through damping of the damping assembly when the hinge element is turned over and closed at a certain position.

The first connecting arm and the second connecting arm are hinged in the U-shaped pushing element, and the hinged positions of the first connecting arm and the second connecting arm extend out of the U-shaped pushing element through the front notch when the hinged element is elastically hinged to open and close.

The action part is integrally formed on the bottom wall, or the action part is separately arranged between the left side wall and the right side wall; a tubular rear gap part is formed among the rear adapter part, the left side wall, the right side wall and the action part; the damping assembly at least comprises a damper and a lever element, one end of the damper is rotatably arranged on the fixed element, the other end of the damper is rotatably connected with one end of the lever element, the middle of the lever element is rotatably arranged on the fixed element, and the other end of the lever element is provided with a closing action matching part.

When the hinged element is turned over relative to the fixed element and closed to a certain position, the lever element extends into the rear notch part and interacts with the action part through the closing action matching part, the lever element rotates on the fixed element through the action of the action part and drives the damper to compress and generate buffering force when rotating, so that the hinged element is damped to turn over and close on the fixed element.

The damper is a resettable damper or a non-resettable damper, a sleeve piece is further sleeved on the damper, and the damper is rotationally connected with the fixed element and/or the lever element through the sleeve piece; the lever element is also provided with an opening action matching part which is positioned above the closing action matching part.

When the hinge element is turned over relative to the fixed element to open a certain position, the rear adapter part acts on the opening action matching part and drives the lever element to rotate on the fixed element, and the lever element drives the damper to reset to an initial position when rotating.

The lever element is disengaged from the rear notch portion when the damper is reset to the initial position.

The end part of the lever element is also provided with a guide part and is guided to extend into the rear gap part when the hinge element is turned over and closed to a certain position through the guide part; the closing action matching part and/or the opening action matching part are/is provided with a zigzag position and interact with the action part and/or the rear adapter part through the zigzag position; the zigzag position is at least composed of circular arc sections.

The connecting arm assembly further comprises a fourth connecting arm, the fourth connecting arm is hinged with the third connecting arm and provided with a connecting arm positioning portion, and the lever element is separated from the rear notch portion and/or is positioned with the connecting arm positioning portion when extending into the rear notch portion.

The connecting arm assembly further comprises a fourth connecting arm and a fifth connecting arm, one end of the fourth connecting arm is hinged with the middle part of the third connecting arm, the other end of the fourth connecting arm is hinged with one end of the fifth connecting arm, and the middle part of the fifth connecting arm is hinged with the fixed element; the damper is positioned behind the fifth connecting arm; one end of the pressure spring is elastically positioned and rotated on the fixed element, and the other end of the pressure spring is elastically positioned and rotated on the fifth connecting arm.

The fifth connecting arm is also provided with an elastic force adjusting component; the pressure spring is elastically positioned and rotated on the fifth connecting arm through the elastic force adjusting component, and the elastic force of the pressure spring is adjusted through the elastic force adjusting component.

The utility model discloses an improvement of above-mentioned structure has following advantage:

1. the hinge component can be elastically turned over to be opened and closed on the fixed component by utilizing the matching of the connecting arm component and the pressure spring; when the hinged element is turned over and closed to a certain position, the lever element extends into the rear notch part of the pushing element, and the pushing element drives the lever element to drive the damper to compress through the action part and generate a buffering force, so that the effect of damping, buffering and closing can be really achieved between the hinged element and the fixed element; when the hinge element is turned over and opened at a certain position, the pushing element drives the lever element to drive the damper to reset to the initial position through the rear adapter part, and meanwhile, due to the positioning action of the fixed positioning part and the connecting arm positioning part, no matter the hinge element changes from an opening state to a closing state or from the closing state to the opening state, the lever element and the damper can forcibly move on the fixed element according to the expected position of a factory, so that the problem that the lever element and the damper are easy to displace when the hinge element is turned over and opened and closed to cause the hinge element to be incapable of being used normally is effectively avoided, and meanwhile, the problem that the pushing element suddenly acts on the lever element when the hinge element is closed to cause the pushing element and the lever element to be easy to damage or the hinge element to have high closing noise is effectively solved, the service life of a product is, so as to improve the safety and the use experience of the product.

2. The pushing element is U-shaped, and by metal material integrated into one piece, can improve its structural stability and life, simultaneously be provided with preceding breach portion on the pushing element, first linking arm and second linking arm are at the U-shaped internalization of pushing element, and can stretch out outside the U-shaped of pushing element through preceding breach portion when articulated component elastic hinge opens and closes, thereby reduce the link arm subassembly, the pushing element occupies fixed element's space, fixed element can corresponding reduction production volume, and therefore, the production cost is reduced, simultaneously, the furniture inside position that the device that turns over on the furniture occupied after the assembly can also be reduced, the inside parking space of messenger's furniture is bigger.

3. The closing action matching part and/or the opening action matching part are/is provided with a zigzag position formed by arc sections, and the zigzag position can achieve uniform acceleration, uniform deceleration or uniform opening and closing of the hinge element on the fixed element when interacting with the action part and/or the rear switching part, so that the hinge element is more labor-saving and smooth to open and close, has small collision and low noise.

4. The sleeving piece is sleeved on the damper, so that the problem that the damper is easy to deform during working can be effectively solved, the stress of the damper is more uniform, the damper is more stable during working, the service life is longer, and the generated damping buffering effect is better;

5. the lever element is separated from the rear notch part of the pushing element when the damper is reset to the initial position, so that the problem that the stability of the product structure is influenced due to rigid connection between the pushing element and the lever element is effectively solved, the service lives of the damper and the lever element are effectively prolonged, and the stability of the product structure is further improved.

6. The fifth connecting arm is provided with an elastic force adjusting assembly capable of adjusting the elastic force of the pressure spring, a user can adjust the elastic force generated by the pressure spring at will according to actual use requirements, and finally the adjustment of the opening and closing force of the hinged element is realized, so that the effect of controlling the opening and closing speed and force of the hinged element is achieved, the collision among all components is smaller, the noise is lower, the hinged element can hover at will under the action of the pressure spring when turning on and off a certain position, namely, the turning on and off hovering and the hovering position adjustment of the hinged element can be realized through the elastic force adjustment of the pressure spring, and the use of the hinged elements with different installation heights and the users with different stature heights is greatly met.

Comprehensively, it has simple structure reasonable, safe and reliable, easy production, easy realization, adjusts swiftly, convenient operation, and the location is accurate, long service life, switching process smoothness, smooth and easy, laborsaving, the collision is little, the noise is low and application range characteristics such as wide, and the practicality is strong.

Drawings

Fig. 1 is an exploded schematic view of a first embodiment of the present invention.

Fig. 2 and 3 are schematic views of an assembly structure according to a first embodiment of the present invention.

Fig. 4 to 7 are schematic views illustrating the process of turning the hinge member to open and close according to the first embodiment of the present invention.

Fig. 8 is a schematic view of an assembly structure according to a second embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

First embodiment

Referring to fig. 1-7, the simple furniture upturning device comprises a pushing element 1, a connecting arm assembly, a fixing element 2 and a damping assembly, wherein the pushing element 1 is hinged to the fixing element 2 through the connecting arm assembly, a pressure spring 3 is arranged on the fixing element 2, the pushing element 1 is elastically turned over and opened and closed on the fixing element 2 through the pressure spring 3, the pushing element 1 is U-shaped and integrally formed by a metal material, a front notch portion 4 is arranged at the front of the pushing element, a middle switching portion 5 is arranged above the front notch portion 4 and hinged to the connecting arm assembly through the middle switching portion 5, a rear notch portion 6 is arranged at the rear of the pushing element 1, an action portion 7 is arranged on the rear notch portion 6, and the pushing element and the damping assembly interact through the action portion 7.

The pushing element 1 comprises a left side wall, a right side wall and a bottom wall, wherein the left side wall, the right side wall and the bottom wall are integrally formed by bending metal materials and mutually form a U shape; the front notch part 4 is arranged at the front part of the bottom wall, and the middle adapter part 5 is positioned above the front notch part 4 and is arranged at the middle position of the left side wall and the right side wall; the front end of the left side wall and the right side wall is provided with a front adapter part 8 and is hinged with a hinge element 9 through the front adapter part 8, and the rear end of the left side wall and the right side wall is provided with a rear adapter part 10 and is hinged with the connecting arm assembly through the rear adapter part 10.

The connecting arm assembly comprises a first connecting arm 11, a second connecting arm 12 and a third connecting arm 13; one end of the first connecting arm 11 is hinged with the middle part of the hinge element 9, the other end of the first connecting arm 11 is hinged with one end of the second connecting arm 12, the middle part of the second connecting arm 12 is hinged with the middle switching part 5, the other end of the second connecting arm 12 is hinged with the fixed element 2, one end of the third connecting arm 13 is hinged with the rear switching part 10, the middle part of the third connecting arm 13 interacts with the pressure spring 3, and the other end of the third connecting arm 13 is hinged with the fixed element 2; the hinge element 9 is elastically turned over and opened and closed on the fixed element 2 through the matching of the pushing element 1, the first connecting arm 11, the second connecting arm 12, the third connecting arm 13 and the pressure spring 3, and is turned over and closed on the fixed element 2 through damping of the damping assembly when the hinge element is turned over and closed at a certain position.

First connecting arm 11 and second connecting arm 12 are hinged inside the U-shape of pusher element 1, and the hinged position of the two arms extends outside the U-shape of pusher element 1 through front notch 4 when hinge element 9 is elastically hinged to open and close.

The action part 7 is integrally formed on the bottom wall, and specifically, the action part 7 is integrally protruded on the bottom wall; a tubular rear gap part 6 is formed among the rear adapter part 10, the left side wall, the right side wall and the action part 7; the damping component at least comprises a damper 14 and a lever element 15, one end of the damper 14 is rotatably arranged on the fixed element 2, the other end of the damper 14 is rotatably connected with one end of the lever element 15, the middle part of the lever element 15 is rotatably arranged on the fixed element 2, and the other end of the lever element 15 is provided with a closing action matching part 16.

When the hinge element 9 is turned over and closed to a certain position relative to the fixing element 2, the lever element 15 extends into the rear notch portion 6 and interacts with the acting portion 7 through the closing action matching portion 16, the lever element 15 rotates on the fixing element 2 through the action of the acting portion 7, and the damper 14 is driven to compress and generate a buffering force during rotation, so that the hinge element 9 is damped to be turned over and closed on the fixing element 2.

The damper 14 is a resettable damper or a non-resettable damper, a sleeve 17 is further sleeved on the damper 14, and the damper 14 is rotationally connected with the fixed element 2 and/or the lever element 15 through the sleeve 17; the lever element 15 is also provided with an opening action engagement portion 18, which opening action engagement portion 18 is located above the closing action engagement portion 16.

When the hinge element 9 is pivoted open into a position relative to the fastening element 2, the rear adapter part 10 acts on the opening action counter-part 18 and drives the lever element 15 in rotation on the fastening element 2, the lever element 15 driving the damper 14 in rotation returning to the initial position.

The lever member 15 is disengaged from the rear notch portion 6 when the damper 14 is returned to the initial position.

The end of the lever element 15 is also provided with a guide part and is guided by the guide part to extend into the rear notch part 6 when the hinge element 9 is turned over and closed to a certain position; the closing action matching part 16 and/or the opening action matching part 18 are/is provided with a zigzag position and interact with the action part 7 and/or the rear adapter part 10 through the zigzag position; the zigzag position is at least composed of circular arc sections.

The fixing element 2 is provided with a fixing and positioning part 19, the damper 14 is positioned with the fixing and positioning part 19 when being reset to the initial position, and/or the connecting arm assembly further comprises a fourth connecting arm 20, the fourth connecting arm 20 is hinged with the third connecting arm 13 and provided with a connecting arm positioning part 21, and the lever element 15 is positioned with the connecting arm positioning part 21 when being separated from the rear notch part 6 and/or extending into the rear notch part 6.

The connecting arm assembly further comprises a fourth connecting arm 20 and a fifth connecting arm 22, one end of the fourth connecting arm 20 is hinged with the middle part of the third connecting arm 13, the other end of the fourth connecting arm 20 is hinged with one end of the fifth connecting arm 22, and the middle part of the fifth connecting arm 22 is hinged with the fixed element 2; the damper 14 is positioned behind the fifth connecting arm 22; one end of the pressure spring 3 is elastically positioned and rotated on the fixed element 2, and the other end of the pressure spring is elastically positioned and rotated on the fifth connecting arm 22.

The fifth connecting arm 22 is also provided with an elastic force adjusting component 23; the pressure spring 3 is elastically positioned and rotated on the fifth connecting arm 22 through the elastic force adjusting component 23, and the elastic force of the pressure spring is adjusted through the elastic force adjusting component 23.

Second embodiment

Referring to fig. 8, the simple furniture upturning device is different from the first embodiment in that: the action portion 7 is provided as a separate body between the left and right side walls, and specifically, the action portion 7 is an action shaft and is interposed between the left and right side walls.

The other parts not described are the same as those of the first embodiment.

The drawings are for illustrative purposes only and are presented in the form of illustrations only, not illustrations as physical or logical, and should not be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Moreover, like or similar reference numerals in the drawings of the embodiments of the present invention correspond to like or similar parts; in the description of the present invention, it should be understood that, if there are any terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "longitudinal", "top", "bottom", "inner", "outer", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, the description is for convenience and simplicity, and it is not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, the terms describing the positional relationships in the drawings are used for illustrative purposes only and are not to be construed as limiting the present patent.

Claims

1. The utility model provides a simple and easy furniture turns over device on, includes pusher element (1), link arm subassembly and fixed component (2), pusher element (1) is articulated each other with fixed component (2) through link arm subassembly, is provided with pressure spring (3) on fixed component (2), and pusher element (1) passes through pressure spring (3) elasticity upset switching on fixed component (2), its characterized in that: the damping device also comprises a damping component; the pushing element (1) is U-shaped and integrally formed by a metal material, a front notch portion (4) is arranged at the front portion of the pushing element, a middle switching portion (5) is arranged above the front notch portion (4) and is hinged with the connecting arm assembly through the middle switching portion (5), a rear notch portion (6) is arranged at the rear portion of the pushing element (1), an acting portion (7) is arranged on the rear notch portion (6), and the pushing element and the damping assembly interact through the acting portion (7).

2. The simple furniture flip-up device of claim 1, wherein: the pushing element (1) comprises a left side wall, a right side wall and a bottom wall, wherein the left side wall, the right side wall and the bottom wall are integrally formed by bending metal materials and mutually form a U shape; the front notch part (4) is arranged at the front part of the bottom wall, and the middle adapter part (5) is positioned above the front notch part (4) and is arranged at the middle position of the left side wall and the right side wall; the front end of the left side wall and the right side wall is provided with a front switching part (8) and is hinged with a hinge element (9) through the front switching part (8), and the rear end of the left side wall and the right side wall is provided with a rear switching part (10) and is hinged with the connecting arm assembly through the rear switching part (10).

3. The plain furniture flip-up device of claim 2, wherein: the connecting arm assembly comprises a first connecting arm (11), a second connecting arm (12) and a third connecting arm (13); one end of the first connecting arm (11) is hinged with the middle of the hinged element (9), the other end of the first connecting arm (11) is hinged with one end of the second connecting arm (12), the middle of the second connecting arm (12) is hinged with the middle switching part (5), the other end of the second connecting arm (12) is hinged with the fixed element (2), one end of the third connecting arm (13) is hinged with the rear switching part (10), the middle of the third connecting arm (13) interacts with the pressure spring (3), and the other end of the third connecting arm (13) is hinged with the fixed element (2); the hinge element (9) is elastically turned over and opened and closed on the fixed element (2) through matching of the pushing element (1), the first connecting arm (11), the second connecting arm (12), the third connecting arm (13) and the pressure spring (3), and is turned over and closed on the fixed element (2) through damping of the damping assembly when the hinge element is turned over and closed at a certain position.

4. The plain furniture flip-up device of claim 3, wherein: the first connecting arm (11) and the second connecting arm (12) are hinged in the U-shaped pushing element (1), and the hinged positions of the first connecting arm and the second connecting arm extend out of the U-shaped pushing element (1) through the front notch part (4) when the hinged element (9) is elastically hinged to open and close.

5. The plain furniture flip-up device of claim 3, wherein: the action part (7) is integrally formed on the bottom wall, or the action part (7) is separately arranged between the left side wall and the right side wall; a tubular rear gap part (6) is formed among the rear adapter part (10), the left side wall, the right side wall and the action part (7); the damping assembly at least comprises a damper (14) and a lever element (15), one end of the damper (14) is rotatably arranged on the fixed element (2), the other end of the damper (14) is rotatably connected with one end of the lever element (15), the middle of the lever element (15) is rotatably arranged on the fixed element (2), and the other end of the lever element (15) is provided with a closing action matching part (16);

when the hinge element (9) is turned over relative to the fixing element (2) to close a certain position, the lever element (15) extends into the rear notch part (6) and interacts with the action part (7) through the closing action matching part (16), the lever element (15) rotates on the fixing element (2) through the action of the action part (7) and drives the damper (14) to compress and generate buffering force when rotating, so that the hinge element (9) is damped to be turned over and closed on the fixing element (2).

6. The simple furniture flip-up device of claim 5, wherein: the damper (14) is a resettable damper or a non-resettable damper, a sleeve piece (17) is further sleeved on the damper, and the damper (14) is rotatably connected with the fixed element (2) and/or the lever element (15) through the sleeve piece (17); the lever element (15) is also provided with an opening action matching part (18), and the opening action matching part (18) is positioned above the closing action matching part (16);

when the hinge element (9) is turned over relative to the fixed element (2) to open a certain position, the rear adapter part (10) acts on the opening action matching part (18) and drives the lever element (15) to rotate on the fixed element (2), and the lever element (15) drives the damper (14) to reset to an initial position when rotating;

the lever element (15) is disengaged from the rear notch portion (6) when the damper (14) is returned to the initial position.

7. The plain furniture flip-up device of claim 6, wherein: the end part of the lever element (15) is also provided with a guide part and is guided to extend into the rear gap part (6) through the guide part when the hinge element (9) is turned over and closed to a certain position; the closing action matching part (16) and/or the opening action matching part (18) are/is provided with a zigzag position and interact with the action part (7) and/or the rear adapter part (10) through the zigzag position; the zigzag position is at least composed of circular arc sections.

8. The plain furniture flip-up device of claim 6, wherein: the damper is characterized in that a fixing and positioning portion (19) is arranged on the fixing element (2), the damper (14) is positioned with the fixing and positioning portion (19) when being reset to an initial position, and/or the connecting arm assembly further comprises a fourth connecting arm (20), the fourth connecting arm (20) is hinged to the third connecting arm (13) and provided with a connecting arm positioning portion (21), and the lever element (15) is separated from the rear notch portion (6) and/or positioned with the connecting arm positioning portion (21) when extending into the rear notch portion (6).

9. The simple furniture flip-up device of claim 5, wherein: the connecting arm assembly further comprises a fourth connecting arm (20) and a fifth connecting arm (22), one end of the fourth connecting arm (20) is hinged with the middle part of the third connecting arm (13), the other end of the fourth connecting arm (20) is hinged with one end of the fifth connecting arm (22), and the middle part of the fifth connecting arm (22) is hinged with the fixed element (2); the damper (14) is positioned behind the fifth connecting arm (22); one end of the pressure spring (3) is elastically positioned and rotated on the fixed element (2), and the other end of the pressure spring is elastically positioned and rotated on the fifth connecting arm (22).

10. The plain furniture flip-up device of claim 9, wherein: the fifth connecting arm (22) is also provided with an elastic force adjusting component (23); the pressure spring (3) is elastically positioned and rotated on the fifth connecting arm (22) through the elastic force adjusting component (23), and the elastic force of the pressure spring is adjusted through the elastic force adjusting component (23).