CN209908204U - Automatic turn-over door buffering hinge of opening and close - Google Patents

Abstract

The utility model provides an automatic opening and closing up-turning door buffer hinge, which comprises a door bracket and a hinge seat. A transmission assembly is hinged between the hinge seat and the door bracket, and the transmission assembly includes a first connecting rod and a second connecting rod. Rod, rotating cam, bearing assembly; the central point shaft of the rotating cam shaft is connected to the hinge seat, the first connecting rod and the second connecting rod cross each other and their ends are hinged on the rotating cam and the door bracket respectively; the bearing assembly The hinge is oscillatingly connected to the hinge seat, the hinge seat is provided with an elastic assembly, the positioning end of the elastic assembly is fastened on the hinge seat, and the connecting end of the elastic assembly is installed on the bearing assembly; and the second connecting rod is provided with a bidirectional The buffer device can not only realize automatic opening and closing, labor-saving and convenient, but also realize two-way buffering, reduce noise, strong protection effect, increase transmission bearing capacity, improve structural stability and reliability, and ensure product quality.

Description

An automatic opening and closing up-turning door buffer hinge

technical field

The utility model relates to the field of flip-up door hinges, in particular to a flip-up door buffer hinge that can be automatically opened and closed.

Background technique

The existing flip-up door hinge includes a main body, a spring, a hook lock and a hook; the spring, the hook lock and the hook are respectively installed on the main body; the hook and the spring are respectively connected with the hook lock. The elastic force of the spring is used to open the support of the flip door without hanging down, and the flip door can be prevented from rebounding at any angle.

In actual operation, the above-mentioned flip-up door hinge has the following shortcomings:

1. The bearing capacity is poor. When the weight of the door body is large, the hinge is easily deformed, which affects the normal use of the flip door.

2. When the flip door is opened upwards, it is necessary to overcome the weight of the door body first, which is heavy, laborious, and inconvenient to use.

3. It cannot be closed automatically, and it needs to use external force to achieve the closing effect.

4. The flip door can only open the door body 90°, which limits the opening range of the door body. At the same time, the traditional flip-up door hinge can only drive the flip door to rotate upward to open or close, that is, it can only be fully opened or completely closed. , the use status is limited, which affects the use effect.

5. Under the action of gravity or supporting elastic force, the upturned door rotates to close or rotate to open too fast, which makes the door body and the cabinet body, the door body and the transmission parts collide easily and generate noise, which is easy to damage the door body and the cabinet body. And transmission parts, reduce the stability of the hinge, shorten the service life of the hinge, and affect the service life of the product.

Therefore, the traditional up-turn door hinge still needs to be further improved.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an automatic opening and closing up-turning door buffer hinge, which has a simplified structure, can realize automatic opening and closing, is labor-saving and convenient, and can also realize two-way buffering, reduce noise, protect Strong effectiveness, increase transmission bearing capacity, improve structural stability and reliability, and ensure product quality.

The purpose of the utility model of the present invention is achieved as follows: an automatic opening and closing up-turning door buffer hinge, including a door bracket fixedly installed with the door body, and a hinge seat fixedly installed with the cabinet body, the hinge seat and the door bracket are fixedly installed. A transmission assembly for driving the door body to open and close on the cabinet is hinged between the connections, and the transmission assembly includes a first connecting rod, a second connecting rod, a rotating cam, and a bearing assembly;

The central axis of the rotating cam is connected to the hinge seat, the first connecting rod and the second connecting rod intersect each other and their ends are hinged on the rotating cam and the door bracket respectively;

The bearing assembly is oscillatingly connected to the hinge seat, and the hinge seat is provided with an elastic assembly that makes the rotating cam and the bearing assembly tangentially and rollingly connected under the action of elasticity, and at the same time generates a power to push the door bracket to open and close. The positioning of the elastic assembly The end buckle is installed on the hinge seat, and the connecting end of the elastic assembly is installed on the bearing assembly;

The second link is provided with a two-way buffer device, the positioning buffer end of the two-way buffer device is connected to the hinge of the door bracket and the second link, and the connection buffer end of the two-way buffer device is connected to the first link and the second link. the intersection of the rods.

According to the above optimization, the tangent point between the bearing assembly and the outer edge of the rotating cam is below the line connecting the bearing assembly and the center point of the rotating cam, and at the same time, a door closing torque that pushes the rotating cam to rotate is formed;

When the tangent point of the bearing assembly and the outer edge of the rotating cam is above the line connecting the center point of the bearing assembly and the rotating cam, a door opening torque that pushes the rotating cam to rotate is formed.

According to the above optimization, the two-way buffer device includes a buffer inner rail, a buffer outer rail, and a buffer damper, the buffer inner rail is slidably installed in the inner cavity of the buffer outer rail, and the positioning end of the buffer inner rail is connected to the second connection At the hinge joint of the rod and the door bracket, the intersection of the first link and the second link is provided with a directional sliding piece that is slidably connected to the buffer outer rail and the buffer inner rail; the buffer damper is installed on the buffer inner rail and has two of its The ends are respectively provided with a positioning sliding block and a connecting sliding block which are slidably connected to the buffer inner rail.

According to the above optimization, the buffer outer rail is provided with a positioning pin for fixing the positioning slider, the upper and lower ends of the connecting slider are provided with a convex edge, and the buffer inner rail is provided with a limit for sliding connection with the positioning pin and the convex edge. Chute.

According to the above optimization, the directional sliding member includes a directional sliding block and a directional sliding pin, the directional sliding block is slidably connected to the connecting end of the buffer inner rail and is fixedly installed with the directional sliding pin, and the directional sliding pin is fixedly installed on the first link At the same time, it is slidably connected with the second link with the opening and closing of the door bracket.

According to the above optimization, the bearing assembly includes a bearing that is tangentially and rollingly connected to the rotating cam, and a swing seat connected to the hinge seat shaft. The bearing is installed on the upper swing end of the swing seat, and the lower swing end of the swing seat is installed with an adjustment elastic The elastic force adjustment device for the force arm of the assembly is installed in a matched manner with the adjustment end of the elastic force adjustment device and the connection end of the elastic assembly.

According to the above optimization, the elastic force adjustment device includes an adjustment screw and an adjustment block, the adjustment screw is installed on the lower swing end of the swing seat, and the adjustment block is fixedly installed at the connection end of the elastic assembly and is threadedly connected with the adjustment screw.

According to the above optimization, the elastic assembly includes a spring, a front buckle block, and a rear buckle block. One end of the spring is buckled with the front buckle block, and the front buckle block is fixedly installed with the adjustment block of the elastic force adjustment device. The other end is buckled and mounted on the rear buckle block, and the rear buckle block is fixedly mounted on the hinge seat.

According to the above optimization, the first link is provided with a guide block, and the hinge seat is provided with a guide groove for sliding connection with the guide block;

The hinge seat is provided with a support rod for restricting the opening position of the door bracket, and the connecting end of the first connecting rod is provided with a support recess installed with the support rod;

The rotating cam is provided with a limiting recess for limiting the closed position of the door bracket, and the guide block is connected with the limiting recess along with the swing of the first link.

According to the above optimization, the hinge seat is provided with a support seat for the rotary cam to swing and swing, and two sides of the rotary cam are respectively provided with reinforcing cams that are tangentially and rollingly connected to the bearing of the bearing assembly.

The advantages of the present utility model are:

1) Using the structural cooperation of the first connecting rod, the second connecting rod and the rotating cam which are cross-connected to each other, the transmission stability is improved, the transmission performance of the transmission assembly is improved, the bearing strength is increased, and the deformation probability is reduced.

2) Affected by the spring tension of the elastic assembly, the bearing is closely tangent to the rotating cam, and when the tangent point between the bearing and the rotating cam is below or above the bearing and the rotating cam, a push-rotating cam can be generated. Rotating door closing torque or door opening torque realizes automatic door closing or opening, labor-saving, convenient operation, and strengthens the stability of the structure; at the same time, during door closing or opening, when the rotating torque is consistent with the weight of the door, the door can hover at any position. One location, adapting to the needs of use, with strong applicability.

3) By adding a two-way buffer device, the door bracket pulls the buffer inner rail of the two-way buffer device to move, and the first link pulls the buffer outer rail to move in the opposite direction relative to the buffer inner rail, so as to compress the buffer damper, so that the upturn door can be closed or moved. When opening the door, it has a two-way buffer effect, reducing noise, effectively protecting the hinge, door and cabinet, and ensuring the quality of use.

4) Under the action of the elastic force adjustment device, the spring force arm can be adjusted only by adjusting the adjusting screw, so as to realize the adjustment of the opening width and adapt to the user's requirements.

5) Cooperate with the structure of the reinforced cam, strengthen the bearing performance of the rotating cam, improve the transmission stability, reduce the probability of deformation, and prolong the service life of the hinge.

Description of drawings

FIG. 1 is a front view of a preferred embodiment of the present invention in a closed state.

FIG. 2 is a partial cross-sectional view of the preferred embodiment of the present invention in a closed state.

FIG. 3 is a cross-sectional view of the preferred embodiment of the present utility model in a closed state.

FIG. 4 is a front view of the preferred embodiment of the present invention in an open state.

FIG. 5 is a partial cross-sectional view of the preferred embodiment of the present invention in an open state.

FIG. 6 is a cross-sectional view of the preferred embodiment of the present invention in an open state.

FIG. 7 is a perspective view of a two-way buffer device according to a preferred embodiment of the present invention.

FIG. 8 is a cross-sectional view of a two-way buffer device according to a preferred embodiment of the present invention.

FIG. 9 is an exploded view of a two-way buffer device according to a preferred embodiment of the present invention.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1 to 6, the automatic opening and closing up-turning door buffer hinge of the present invention includes a door bracket 1 fixedly installed with the door body, and a hinge base 2 fixedly installed with the cabinet body. The hinge base 2 and the door bracket 1 are hingedly connected with a transmission assembly for driving the door body to open and close on the cabinet body.

The transmission assembly includes a first connecting rod 3, a second connecting rod 4, a rotating cam 5, and a bearing assembly 6. The central axis of the rotating cam 5 is connected to the hinge base 2, and the first connecting rod 3 , The second connecting rods 4 cross each other and their ends are hinged on the rotating cam 5 and the door bracket 1 respectively. The first connecting rod 3, the second connecting rod 4 and the rotating cam 5, which are cross-connected, are used for structural cooperation to improve the transmission stability, improve the transmission performance of the transmission assembly, increase the bearing strength, and reduce the deformation probability.

In practical application, the first link 3 is provided with a guide block 10 , and the hinge base 2 is provided with a guide groove 11 for sliding connection with the guide block 10 . The rotation track of the door bracket 1 is controlled by the guide block 10 of the first link 3 and the guide groove 11 of the hinge base 2 in cooperation. Ensure that the door body rotates smoothly and stably, and improve the quality of the product.

At the same time, the hinge base 2 is provided with a support rod 12 for restricting the opening position of the door bracket 1 , and the connecting end of the first link 3 is provided with a support recess 31 which is installed with the support rod 12 . The rotating cam 5 is provided with a restricting recess 51 for restricting the closed position of the door bracket 1 , and the guide block 10 is connected to the restricting recess 51 as the first link 3 swings. The structural cooperation between the support rod 12 and the support recess 31 and the limiting recess 51 and the guide block 10 limits the opening and closing position of the door body, improves the support strength, and ensures the use quality of the opening and closing of the door body.

Referring to Figures 1 to 6, the bearing assembly 6 is oscillatingly connected to the hinge seat 2, and the hinge seat 2 is provided with a tangential rolling connection between the rotating cam 5 and the bearing assembly 6 under the action of elasticity to generate a push door. The bracket 1 has an elastic assembly 7 for opening and closing power.

The bearing assembly 6 includes a bearing 61 that is tangentially and rollingly connected to the rotating cam 5 , and a swinging seat 62 that is axially connected to the hinge seat 2 . The bearing 61 is installed on the upper swinging end of the swinging seat 62, and the lower swinging end of the swinging seat 62 is installed with an elastic force adjusting device 9 for adjusting the force arm of the elastic assembly 7, and the adjusting end of the elastic force adjusting device 9 is connected with the elastic assembly 7. Matching installation.

In practical application, the elastic force adjustment device 9 includes an adjustment screw 91 and an adjustment block 92. The adjustment screw 91 is installed on the lower swing end of the swing seat 62, and the adjustment block 92 is fixedly installed at the connection end of the elastic assembly 7 and is connected with the adjustment screw 91 threaded connection.

And, the elastic assembly 7 includes a spring 71 , a front buckling block 72 and a rear buckling block 73 . One end of the spring 71 is buckled with the front buckle block 72, the front buckle block 72 is fixedly installed with the adjustment block 92 of the elastic force adjustment device 9, and the other end of the spring 71 is buckled with the rear buckle block 73, and the rear buckle block 73 is fixed Installed on hinge base 2.

That is, as the door bracket 1 is closed, under the influence of the pulling force of the spring 71, when the tangent point 16 of the rotating cam 5 and the bearing 61 is below the line 17 connecting the center point of the bearing 61 and the rotating cam 5, a rotating thrust can be generated to close the door. The torque pushes the rotating cam 5 to rotate to realize automatic door closing.

As the door bracket 1 opens, under the influence of the pulling force of the spring 71, when the tangent point 16 of the rotating cam 5 and the bearing 61 is above the line 17 connecting the center points of the bearing assembly 6 and the rotating cam 5, a rotating thrust can be generated to open the door torque. When the door opening torque is consistent with the weight of the door body, the door body can hover at any position in the middle. When the rotational torque of the door body is increased, the rotating cam 5 can be pushed to rotate, so as to realize the automatic door opening.

When the door is opened, only the adjusting block 92 needs to be adjusted, and the adjusting block 92 can move up and down along the adjusting screw 91 to adjust the opening range of the door to meet the needs of users and enhance the use effect of the product.

In addition, the hinge seat 2 is provided with a support seat 13 for the rotary cam 5 to rotate and swing, and two sides of the rotary cam 5 are respectively provided with reinforcing cams 14 tangentially and rollingly connected to the bearing 61 of the bearing assembly 6 . The bearing performance of the rotating cam 5 is further strengthened, the rotation stability is improved, the deformation of the rotating cam 5 is avoided, and the door body is ensured to open and close normally.

Referring to FIG. 1 to FIG. 9 , the second connecting rod 4 is provided with a two-way buffer device 8 . The positioning buffer end of the two-way buffer device 8 is connected to the hinge of the door bracket 1 and the second link 4 , and the connection buffer end of the two-way buffer device 8 is connected to the intersection of the first link 3 and the second link 4 .

In practical application, the two-way buffer device 8 includes a buffer inner rail 81 , a buffer outer rail 82 , and a buffer damper 83 . The buffer inner rail 81 is slidably mounted in the inner cavity of the buffer outer rail 82 , and the positioning end of the buffer inner rail 81 is connected to the hinge joint of the second link 4 and the door bracket 1 . The intersection of the first connecting rod 3 and the second connecting rod 4 is provided with a directional sliding member that is slidably connected to the buffer outer rail 82 and the buffer inner rail 81, and the buffer damper 83 is installed on the buffer inner rail 81 and has two parts. A positioning slider 84 and a connecting slider 85 are respectively installed on the ends of the buffer inner rail 81 .

The buffer outer rail 82 is provided with a positioning pin 86 for fixing the positioning slider 84, the upper and lower ends of the connecting slider 85 are provided with a convex edge 87, and the buffer inner rail 81 is provided with the positioning pin 86 and the convex edge. 87 Sliding connection defines chute 88.

When the door body is turned up, the door bracket 1 pulls the buffer inner rail 81 to move to the right, so as to push the positioning pin 86 to move to the left along the limiting chute 88, and simultaneously push the positioning slider 84 to move to the left. During this period, the first link 3 pulls the buffer outer rail 82 to move to the left, so that the connecting slider 85 runs along the limiting chute 88 to the right. In this way, when the distance between the connecting slider 85 and the positioning slider 84 is getting smaller and smaller, the buffer damper 83 is compressed, so that the door opening has a buffer effect.

Similarly, when the door body is turned down, the door bracket 1 pulls the buffer inner rail 81 to move to the left, so as to push the positioning pin 86 to move to the right along the limiting chute 88, and simultaneously push the positioning slider 84 to move to the right. . During this period, the first connecting rod 3 pulls the buffer outer rail 82 to move to the right, so that the connecting slider 85 moves to the left along the limiting chute 88 . When the distance between the connecting slider 85 and the positioning slider 84 is getting smaller and smaller, the buffer damper 83 is compressed, so that the door closing has a buffer effect.

Furthermore, the directional sliding member includes directional sliding blocks 89 and directional sliding pins 810 . The orientation slider 89 is slidably connected to the connecting end of the buffer inner rail 81 and is fixedly installed with the orientation slide pin 810. The orientation slide pin 810 is fixedly installed on the first link 3 and is connected to the second connection with the opening and closing of the door bracket 1. Rod 4 is slidingly connected. In this optimized solution, the second connecting rod 4 is provided with a directional sliding groove 15 which is matched and slidably connected with the directional sliding pin 810 .

In this way, during the opening and closing of the door body, the buffer outer rail 82 and the buffer inner rail 81 can move stably and smoothly with the first link 3 and the second link 4 to ensure the buffer effect of the two-way buffer device 8 .

The above-mentioned specific embodiments are only specific implementations with better effects of the present invention, and all structures that are the same or equivalent to the automatically opening and closing up-turning door buffer hinge of the present invention are within the protection scope of the present invention.

Claims (10)

1. The utility model provides an automatic turn over a buffering hinge on opening and close, includes with door body fixed mounting's door support (1), with cabinet body fixed mounting's hinge seat (2), its characterized in that: a transmission assembly for driving the door body to open and close on the cabinet body is hinged between the hinge seat (2) and the door support (1), and the transmission assembly comprises a first connecting rod (3), a second connecting rod (4), a rotating cam (5) and a bearing assembly (6);

the central point shaft of the rotating cam (5) is connected to the hinge base (2), the first connecting rod (3) and the second connecting rod (4) are mutually crossed, and the ends of the first connecting rod and the second connecting rod are respectively hinged to the rotating cam (5) and the door bracket (1);

the bearing assembly (6) is connected to the hinge seat (2) in a swinging mode, the hinge seat (2) is provided with an elastic assembly (7) which enables the rotary cam (5) to be in tangential rolling connection with the bearing assembly (6) under the elastic action and generates power for pushing the door bracket (1) to open and close at the same time, the positioning end of the elastic assembly (7) is buckled on the hinge seat (2), and the connecting end of the elastic assembly (7) is installed on the bearing assembly (6);

the door is characterized in that a bidirectional buffer device (8) is arranged in the second connecting rod (4), the positioning buffer end of the bidirectional buffer device (8) is connected to the hinged position of the door support (1) and the second connecting rod (4), and the connecting buffer end of the bidirectional buffer device (8) is connected to the crossed position of the first connecting rod (3) and the second connecting rod (4).

2. The automatically opened and closed upward-turning door buffering hinge according to claim 1, characterized in that: a tangent point (16) of the bearing assembly (6) and the outer edge of the rotating cam (5) is positioned below a central point connecting line (17) of the bearing assembly (6) and the rotating cam (5) and forms a door closing torque for pushing the rotating cam (5) to rotate;

and a tangent point (16) of the bearing assembly (6) and the outer edge of the rotating cam (5) is positioned above a central point connecting line (17) of the bearing assembly (6) and the rotating cam (5) and simultaneously forms door opening torque for pushing the rotating cam (5) to rotate.

3. The automatically opened and closed upward-turning door buffering hinge according to claim 1, characterized in that: the bidirectional buffer device (8) comprises a buffer inner rail (81), a buffer outer rail (82) and a buffer damper (83), the buffer inner rail (81) is slidably mounted in an inner cavity of the buffer outer rail (82), a positioning end of the buffer inner rail (81) is connected to a hinge joint of the second connecting rod (4) and the door bracket (1), and a directional sliding part which is slidably connected to the buffer outer rail (82) and the buffer inner rail (81) is arranged at a cross position of the first connecting rod (3) and the second connecting rod (4); the buffer damper (83) is arranged on the buffer inner rail (81), and the two ends of the buffer damper are respectively provided with a positioning slide block (84) and a connecting slide block (85) which are connected to the buffer inner rail (81) in a sliding way.

4. The automatically opened and closed upward-turning door buffering hinge according to claim 3, characterized in that: the buffer outer rail (82) is provided with a positioning pin (86) for fixing and positioning the sliding block (84), the upper end and the lower end of the connecting sliding block (85) are provided with convex edges (87), and the buffer inner rail (81) is provided with a limiting sliding groove (88) which is connected with the positioning pin (86) and the convex edges (87) in a sliding manner.

5. The automatically opened and closed upward-turning door buffering hinge according to claim 3, characterized in that: the directional sliding piece comprises a directional sliding block (89) and a directional sliding nail (810), the directional sliding block (89) is connected to the connecting end of the buffering inner rail (81) in a sliding mode and fixedly mounted with the directional sliding nail (810), and the directional sliding nail (810) is fixedly mounted on the first connecting rod (3) and is connected with the second connecting rod (4) in a sliding mode along with the opening and closing of the door support (1).

6. The automatically opened and closed upward-turning door buffering hinge according to claim 1, characterized in that: the bearing assembly (6) comprises a bearing (61) which is in tangential rolling connection with the rotating cam (5) and a swinging seat (62) which is connected with the hinge seat (2) in a shaft mode, the bearing (61) is installed at the upper swinging end of the swinging seat (62), an elastic force adjusting device (9) for adjusting the force arm of the elastic assembly (7) is installed at the lower swinging end of the swinging seat (62), and the adjusting end of the elastic force adjusting device (9) is installed in a matching mode with the connecting end of the elastic assembly (7).

7. The automatically opened and closed upward-turning door buffering hinge according to claim 6, characterized in that: the elasticity adjusting device (9) comprises an adjusting screw rod (91) and an adjusting block (92), the adjusting screw rod (91) is installed at the lower swinging end of the swinging seat (62), and the adjusting block (92) is fixedly installed at the connecting end of the elastic assembly (7) and is in threaded connection with the adjusting screw rod (91).

8. The automatically opened and closed upward-turning door buffering hinge according to claim 6, characterized in that: the elastic assembly (7) comprises a spring (71), a front buckling block (72) and a rear buckling block (73), one end of the spring (71) is buckled with the front buckling block (72), the front buckling block (72) is fixedly installed with an adjusting block (92) of the elastic force adjusting device (9), the other end of the spring (71) is buckled with the rear buckling block (73), and the rear buckling block (73) is fixedly installed on the hinge seat (2).

9. The automatically opened and closed upward-turning door buffering hinge according to claim 1, characterized in that: the first connecting rod (3) is provided with a guide block (10), and the hinge seat (2) is provided with a guide groove (11) which is connected with the guide block (10) in a sliding manner;

the hinge seat (2) is provided with a supporting rod (12) for limiting the opening position of the door bracket (1), and the connecting end of the first connecting rod (3) is provided with a supporting concave position (31) installed with the supporting rod (12);

the rotating cam (5) is provided with a limiting concave position (51) for limiting the closing position of the door bracket (1), and the guide block (10) is connected with the limiting concave position (51) along with the swinging of the first connecting rod (3).

10. The automatically opened and closed upward-turning door buffering hinge according to claim 1, characterized in that: a supporting seat (13) for rotating and swinging the rotating cam (5) is arranged in the hinge seat (2), and reinforcing cams (14) which are in tangential rolling connection with a bearing (61) of the bearing assembly (6) are respectively arranged on two sides of the rotating cam (5).

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