Top-up door hinge combined thrust adjusting mechanism

Abstract

An upturning door hinge combined type thrust adjusting mechanism comprises a base fixed on a cabinet body and a connecting rod seat installed on a cabinet door, the base and the connecting rod seat are connected through a multi-connecting-rod mechanism, the multi-connecting-rod mechanism swings relative to the base and the connecting rod seat to achieve opening and closing of a hinge, a driving plate is further installed in the base in a hinged mode, and the driving plate is connected with the connecting rod seat. The driving plate is hinged to the multi-connecting-rod mechanism through a second pulling arm. A power assisting device is further arranged in the base, one end of the power assisting device is hinged to the base, the other end of the power assisting device is hinged to the driving plate, thrust generated by the power assisting device is always applied to the driving plate, the driving plate and the second pull arm are used for pushing the multi-connecting-rod mechanism to move, and power is provided for hinge opening.

Description

Technical Field

[0001] The invention relates to a household hardware accessory, in particular to a combined thrust regulating mechanism for an upward-flipping door hinge. Background Art

[0002] The hinge mechanism of the flip door has been widely used in the fields of furniture, home appliances, etc., especially in the door structure of cabinets, wardrobes and smart home appliances. This type of hinge connects the door body to the cabinet body through a multi-link mechanism to achieve the flip opening and closing of the door body. However, the existing hinge mechanism of the flip door generally has the following problems: 1. Unable to accurately adapt to the weight of the door panel: Existing hinge mechanisms for flip doors usually use fixed boosters, such as gas springs, torsion springs, etc., which require pre-set thrust values ​​during the design process. However, due to the diversity of door panel weights and materials, such as solid wood, glass or composite materials, the weights of different door panels vary greatly, and it is difficult for fixed boosters to dynamically adjust according to changes in door panel weight. As a result, in actual applications, the opening and closing speed of the door panel will be affected by excessive or insufficient thrust: When the thrust is too great, the door opens too quickly, which may cause safety hazards during use or even damage the door or hinge mechanism. When the thrust is insufficient, the door opens slowly, resulting in a poor user experience and the door may not be fully opened.

[0003] 2. Limited adjustment range of the power assist device: Some existing technologies attempt to solve the above problems through spring adjustment devices, but their adjustment range is often limited, and the adjustment process is complicated, which may even lead to improper adjustment, further affecting the performance. In addition, the power assist after adjustment cannot maintain consistency, and the power assist effect is easy to decay after long-term use, so it is necessary to make further improvements. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a combined thrust adjustment mechanism for an upward-flipping door hinge that is simple in structure, easy to use, and can adjust the strength of the assisting device according to the weight of the cabinet door to match the door weight, so that the cabinet door can be opened and closed stably and smoothly.

[0005] The objective of the present invention is achieved in the following manner: a combined thrust adjustment mechanism for an upward-flipping door hinge, comprising a base fixed on a cabinet body, and a connecting rod seat installed on the cabinet door, wherein the base and the connecting rod seat are connected via a multi-link mechanism, and the multi-link mechanism swings relative to the base and the connecting rod seat to realize the opening and closing of the hinge, and a drive plate is also hingedly installed in the base, and the drive plate is hinged to the multi-link mechanism via a second pull arm; a power assist device is also provided in the base, one end of the power assist device is hinged to the base, and the other end is hinged to the drive plate, and the thrust generated by the power assist device is always applied to the drive plate, and the drive plate and the second pull arm are used to push the multi-link mechanism to move, thereby providing power assist for the hinge to open.

[0006] Furthermore: the power-assisting device includes a spring fixing tube and a spring telescopic tube, the spring telescopic tube is sleeved in the spring fixing tube, one end of the spring telescopic tube is hinged to the driving plate through a spring bracket, the tail of the spring fixing tube is connected to the base through an elastic force adjustment device, the power-assisting spring is sleeved on the cylindrical surface of the spring fixing tube and the spring telescopic tube, and the power-assisting spring pushes the driving plate to swing through the spring bracket.

[0007] Furthermore: a spring base is installed at the tail of the spring fixing tube, one end of the assist spring is pressed on the spring base, a support pin is arranged on the spring base, and both ends of the support pin extend into adjustment slots arranged on the base.

[0008] Further: the elastic force adjustment device is a support column arranged in the base, and a first elastic force adjustment screw hole is arranged on the support column. A first elastic force adjustment bolt is threaded in the first elastic force adjustment screw hole, and the end of the first elastic force adjustment bolt is connected to the spring base. Rotating the first elastic force adjustment bolt drives the spring base to slide to adjust the elastic force of the assisting spring.

[0009] Furthermore: an elastic guide groove is provided on the driving plate, and the spring bracket is slidably installed in the elastic guide groove through an elastic guide column. A second elastic force adjustment screw hole is also provided on the driving plate, and a second elastic force adjustment bolt is threaded in the second elastic force adjustment screw hole. The other end of the second elastic force adjustment bolt is connected to the spring bracket or the elastic guide column, and the second elastic force adjustment bolt is rotated to drive the elastic guide column to slide in the elastic guide groove.

[0010] Furthermore, the elastic guide groove is extended in a direction away from the hinge point between the driving plate and the base.

[0011] Furthermore: a guide hole is provided on the cylindrical surface of the spring base and penetrates through the body thereof, and the support pin is inserted and installed in the guide hole.

[0012] Furthermore: both ends of the support pin are flat platforms, and the flat platforms extend into the adjustment slot.

[0013] Furthermore: a concave limiting hole is arranged at the tail of the spring base, and the end of the first elastic force adjusting bolt extends into the limiting hole.

[0014] The beneficial effects of the present invention are: 1. Simple structure, low production cost and improved market competitiveness.

[0015] The present invention introduces an elastic force adjustment device, such as a first elastic force adjustment bolt, which can accurately adjust the elastic force range of the booster spring according to the weight of the door panel. The spring base is linked with the base structure through the adjustment bolt to achieve compression or release of the booster spring, thereby effectively changing the thrust size.

[0016] The present invention is also provided with a second elastic force adjustment bolt, by rotating the second elastic force adjustment bolt, the force position of the driving plate is changed to adjust the length of the driving plate's thrust lever, thereby achieving a second adjustment of the magnitude of the assist force. This design not only expands the adjustment range, but also enables fine adjustment, so that the assist force device can accurately match door panels of different weights.

[0017] 4. The design of the drive plate and the multi-link mechanism fully considers the coordination of the motion trajectory. Through the linkage structure of the drive plate and the second pull arm, the thrust generated by the power assist device can be smoothly transmitted to the multi-link mechanism, ensuring that the opening and closing process of the door panel is smoother and more stable. Even when the door panel is heavy, it can avoid shaking or jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the present invention being assembled with the cabinet door and cabinet body and in an open state.

[0019] Figure 2 This is a schematic diagram of the present invention and the cabinet door being assembled and in a closed state.

[0020] Figure 3 It is a schematic diagram of the general assembly structure of the present invention.

[0021] Figure 4-6 This is a schematic diagram of the structure of the present invention after the housing is hidden.

[0022] Figure 7 It is a schematic diagram of the structure of the present invention in a closed state.

[0023] Figure 8 It is a schematic diagram of the structure of the elastic force adjustment device in the present invention. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings. A combined thrust adjustment mechanism for an upward-flipping door hinge includes a base 6 fixed on a cabinet body 1 and a connecting rod seat 5 installed on a cabinet door 2. The base 6 and the connecting rod seat 5 are connected via a multi-link mechanism 3. The multi-link mechanism 3 swings relative to the base 6 and the connecting rod seat 5 to realize the opening and closing of the hinge. A driving plate 8 is also hingedly installed in the base 6. The driving plate 8 is hinged to the multi-link mechanism 3 via a second pull arm 81. A power assist device 9 is also provided in the base 6. One end of the power assist device 9 is hinged to the base 6, and the other end is hinged to the driving plate 8. The thrust generated by the power assist device 9 is always applied to the driving plate 8. The driving plate 8 and the second pull arm 81 are used to push the multi-link mechanism 3 to move, thereby providing power assist for the hinge to open.

[0025] In one of the embodiments: the power-assisting device 9 includes a spring fixing tube 91 and a spring telescopic tube 92, the spring telescopic tube 92 is sleeved in the spring fixing tube 91, one end of the spring telescopic tube 92 is hinged to the driving plate 8 through a spring bracket 93, the tail of the spring fixing tube 91 is connected to the base 6 through an elastic force adjustment device, the power-assisting spring 94 is sleeved on the cylindrical surfaces of the spring fixing tube 91 and the spring telescopic tube 92, and the power-assisting spring 94 pushes the driving plate 8 to swing through the spring bracket 93.

[0026] In one of the embodiments: a spring base 95 is installed at the tail of the spring fixing tube 91, one end of the assist spring 94 is pressed against the spring base 95, a support pin 96 is provided on the spring base 95, and both ends of the support pin 96 extend into an adjustment slot 97 provided on the base 6.

[0027] In one of the embodiments: the elastic force adjustment device is a support column 61 arranged in the base 6, and a first elastic force adjustment screw hole 62 is arranged on the support column 61. A first elastic force adjustment bolt 63 is threaded in the first elastic force adjustment screw hole 62, and an end of the first elastic force adjustment bolt 63 is connected to the spring base 95. Rotating the first elastic force adjustment bolt 63 drives the spring base 95 to slide to adjust the elastic force of the assist spring 94.

[0028] In one of the embodiments: the driving plate 8 is provided with an elastic guide groove 82, and the spring bracket 93 is slidably installed in the elastic guide groove 82 through the elastic guide column 83. The driving plate 8 is also provided with a second elastic force adjustment screw hole 84, and a second elastic force adjustment bolt 85 is threaded in the second elastic force adjustment screw hole 84. The other end of the second elastic force adjustment bolt 85 is connected to the spring bracket 93 or the elastic guide column 83, and the second elastic force adjustment bolt 85 is rotated to drive the elastic guide column 83 to slide in the elastic guide groove 82.

[0029] In one embodiment, the elastic guide groove 82 is extended in a direction away from the hinge point between the driving plate 8 and the base 6 .

[0030] In one embodiment, a guide hole 98 is provided on the cylindrical surface of the spring base 95 and penetrates through the body thereof, and the support pin 96 is inserted and installed in the guide hole 98 .

[0031] In one embodiment, the two ends of the support pin 96 are flat platforms 99 , and the flat platforms 99 extend into the adjustment slot 97 .

[0032] In one embodiment, a concave limiting hole 910 is provided at the tail of the spring base 95 , and the end of the first elastic force adjustment bolt 63 extends into the limiting hole 910 .

[0033] Working principle: The combined thrust adjustment mechanism for the upturned door hinge provided by the present invention realizes the smooth opening and closing of the upturned door through the coordinated action of the multi-link mechanism, the drive plate and the power-assisting device, and accurately adjusts the power-assisting force through the elastic force adjustment device, so that the mechanism can adapt to door panels of different weights.

[0034] Specifically: The opening and closing of the flip door is completed by a multi-link mechanism. The base is fixed on the cabinet, the connecting rod seat is installed on the door panel, and the multi-link mechanism connects the base and the connecting rod seat. When the door panel is opened or closed, the multi-link mechanism swings relative to the base and the connecting rod seat to ensure that the door panel moves along the predetermined trajectory. Through the carefully designed connecting rod geometry, the multi-link mechanism can provide a smooth motion trajectory and avoid jamming or shaking with the cooperation of the power assist device. In addition, the motion trajectory of the multi-link mechanism is coordinated with the thrust direction of the power assist device, so that the mechanism always remains stable and impact-free during the opening and closing process.

[0035] In order to facilitate the power transmission of the power-assisting device and the arrangement of the internal components of the door opening mechanism, a drive plate is provided in this case for power transfer. Specifically, the drive plate is hinged in the base, and one end of the drive plate is hinged to the multi-link mechanism through the second pull arm. When the power-assisting device generates thrust, the drive plate swings in the base, and the power of the drive plate transmits the power to the multi-link mechanism through the second pull arm, pushing the multi-link mechanism to move, thereby realizing the upward flipping and opening of the door panel. Conversely, during the closing process, the drive plate applies force to the power-assisting device through the second pull arm, and the thrust of the power-assisting device balances the weight of the door panel to ensure the smoothness of the closing process.

[0036] In this technical solution, the design of the drive plate enables the thrust of the power-assisting device to act on the multi-link mechanism, reducing transmission energy loss, improving power-assisting efficiency, facilitating the arrangement of related mechanisms, and helping to reduce the size of the equipment.

[0037] Specifically, the booster device in this case is composed of a spring fixing tube, a spring telescopic tube, a booster spring and an elastic force adjustment device. When the door panel is opened, the elastic thrust generated by the booster spring is applied to the drive plate through the spring bracket, pushing the drive plate to swing. When the drive plate swings, the second pull arm pushes the multi-link to achieve the booster for opening the door panel; during the closing process, the closing force pushes the booster spring to retract and store energy, providing stored power for opening the door again.

[0038] When the device is used for doors of different weights, the first elastic force adjustment bolt 63 is rotated to push the spring base to slide left and right, thereby adjusting the preload on the power-assisting spring 94, and adjusting the power-assisting size. In order to facilitate the user to check the power-assisting size, a support pin 96 is provided on the spring base 95 in this case, and flat platforms 99 are provided at both ends of the support pin 96, and the flat platforms 99 extend into the adjustment slot 97. The connection between the flat platforms 99 and the adjustment slot 97 supports and guides the spring base, and the user can understand the current power-assisting value by observing the position of the flat platforms 99 in the adjustment slot 97, so that the user can quickly determine how to adjust the power-assisting size.

[0039] It should be noted that: in order to further expand the range of elastic force adjustment of the device, the drive plate 8 described in this case is provided with an elastic force guide groove 82, and the spring bracket 93 is slidably installed in the elastic force guide groove 82 through the elastic force guide column 83. The drive plate 8 is also provided with a second elastic force adjustment screw hole 84, and the second elastic force adjustment screw hole 84 is threaded with a second elastic force adjustment bolt 85. The other end of the second elastic force adjustment bolt 85 is connected to the spring bracket 93 or the elastic force guide column 83, and the second elastic force adjustment bolt 85 is rotated to drive the elastic guide column 83 to slide in the elastic force guide groove 82. The elastic force guide groove 82 is extended in the direction away from the hinge point of the drive plate 8 and the base 6. Therefore, when the second elastic force adjustment bolt 85 is rotated to drive the elastic guide column 83 to slide in the elastic force guide groove 82 to different positions, the force points applied by the spring 94 to the drive plate are different, thereby changing the length of the spring thrust power arm. When the resistance arm of the drive plate pushing the second pull arm remains unchanged, the length of the power arm directly affects the force of the spring 94 pushing the multi-link mechanism.

[0040] Compared with traditional technology, in this case, through the cooperation of the first adjusting bolt and the second adjusting bolt, the assisting force of the assisting device in the hinge can be adjusted over a large range and accurately, so that the mechanism can perfectly adapt to door panels of different weights, thereby improving its scope of application and avoiding the problems of insufficient or excessive thrust in the prior art. Therefore, it can be widely promoted and used.

[0041] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A combined thrust adjustment mechanism for an upward-flipping door hinge, comprising a base (6) fixed on a cabinet body (1), and a connecting rod seat (5) mounted on a cabinet door (2), wherein the base (6) and the connecting rod seat (5) are connected via a multi-link mechanism (3), and the multi-link mechanism (3) swings relative to the base (6) and the connecting rod seat (5) to realize the opening and closing of the hinge, characterized in that: A driving plate (8) is also hingedly mounted in the base (6), and the driving plate (8) is hingedly connected to the multi-link mechanism (3) via a second pull arm (81); a power assist device (9) is also provided in the base (6), and one end of the power assist device (9) is hingedly connected to the base (6), and the other end is hingedly connected to the driving plate (8). The thrust generated by the power assist device (9) is always applied to the driving plate (8), and the multi-link mechanism (3) is pushed to move by the driving plate (8) and the second pull arm (81), thereby providing power assist for the hinge to open.

2. The combined thrust adjustment mechanism for an upward-flipping door hinge according to claim 1, characterized in that: The booster device (9) comprises a spring fixing tube (91) and a spring telescopic tube (92), wherein the spring telescopic tube (92) is sleeved inside the spring fixing tube (91), one end of the spring telescopic tube (92) is hinged to the drive plate (8) via a spring bracket (93), the tail of the spring fixing tube (91) is connected to the base (6) via an elastic force adjustment device, and a booster spring (94) is sleeved on the cylindrical surfaces of the spring fixing tube (91) and the spring telescopic tube (92), and the booster spring (94) pushes the drive plate (8) to swing via the spring bracket (93).

3. The combined thrust adjustment mechanism for an upward-flipping door hinge according to claim 2, characterized in that: A spring base (95) is installed at the rear of the spring fixing tube (91), one end of the assist spring (94) is pressed against the spring base (95), a support pin (96) is provided on the spring base (95), and both ends of the support pin (96) extend into an adjustment slot (97) provided on the base (6).

4. The combined thrust adjustment mechanism for an upward-flipping door hinge according to claim 2, characterized in that: The elastic force adjustment device is a support column (61) arranged in the base (6), the support column (61) is provided with a first elastic force adjustment screw hole (62), a first elastic force adjustment bolt (63) is threadedly connected in the first elastic force adjustment screw hole (62), the end of the first elastic force adjustment bolt (63) is connected to the spring base (95), and the first elastic force adjustment bolt (63) is rotated to drive the spring base (95) to slide, so as to adjust the elastic force of the assist spring (94).

5. The combined thrust adjustment mechanism for an upward-flipping door hinge according to claim 1, characterized in that: The drive plate (8) is provided with an elastic guide groove (82), and the spring bracket (93) is slidably mounted in the elastic guide groove (82) via the elastic guide column (83). The drive plate (8) is also provided with a second elastic force adjustment screw hole (84), and a second elastic force adjustment bolt (85) is screwed into the second elastic force adjustment screw hole (84). The other end of the second elastic force adjustment bolt (85) is connected to the spring bracket (93) or the elastic guide column (83), and the second elastic force adjustment bolt (85) is rotated to drive the elastic guide column (83) to slide in the elastic guide groove (82).

6. The combined thrust adjustment mechanism for an upward-flipping door hinge according to claim 5, characterized in that: The elastic guide groove (82) is extended in a direction away from the hinge point between the drive plate (8) and the base (6).

7. The combined thrust adjustment mechanism for an upward-flipping door hinge according to claim 3, characterized in that: A guide hole (98) is provided on the cylindrical surface of the spring base (95) and penetrates through the body thereof, and the support pin (96) is inserted and installed in the guide hole (98).

8. The combined thrust adjustment mechanism for an upward-flipping door hinge according to claim 7, characterized in that: Both ends of the support pin (96) are flat platforms (99), and the flat platforms (99) extend into the adjustment slot (97).

9. The combined thrust adjustment mechanism for an upward-flipping door hinge according to claim 4, characterized in that: The rear portion of the spring base (95) is provided with a concave limiting hole (910), and the end of the first elastic force adjustment bolt (63) extends into the limiting hole (910).

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