Embedded hinge for sliding door

Abstract

The present invention provides an embedded hinge for a sliding door, comprising a fixed seat, a base, and a transmission component for enabling the fixed seat and the base to open and close relative to each other. The transmission component comprises a six-link assembly and a self-closing power assembly. The fixed end and the swing end of the six-link assembly are respectively hinged to the fixed seat and the base. The automatic closing power assembly comprises a cam and a leaf spring. The cam is mounted on the base, the leaf spring is mounted on the swing end of the six-link assembly, and the two elastic ends of the leaf spring are respectively connected to the six-link assembly and the cam. The cam is provided with a sliding convex arc surface for generating a rotational closing force arm with the leaf spring under the elastic force of the leaf spring. One elastic end of the leaf spring is always slidably connected to the sliding convex arc surface as the base closes. The structure is simplified, the stability is high, the installation is convenient, and it has an automatic door closing function. It is easy to use, the experience is good, and the quality of use is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of hinges, in particular to an embedded hinge for a sliding door. Background Art

[0002] Embedded hinges can be used on furniture products and electrical appliances to allow doors to be opened and closed on the cabinet body, which is easy to operate and saves space.

[0003] Existing Chinese patent number: ZL201410188238.1, a built-in refrigerator door hinge and built-in refrigerator, discloses a fixed hinge base, a movable hinge base, a long swing arm, a first short swing arm, a second short swing arm, and a third short swing arm. The long swing arm is hinged at one end to the fixed hinge base; the first and second short swing arms are each hinged at one end to the long swing arm and at the other end to the movable hinge base; the third short swing arm is hinged at one end to the fixed hinge base and at the other end to the second short swing arm. Thus, the fixed hinge base, movable hinge base, long swing arm, and three short swing arms form a six-link mechanism, enabling the built-in refrigerator door to open and close.

[0004] However, the above hinge structure has the following deficiencies in practical applications:

[0005] Although the above-mentioned hinge structure is equipped with a door opening and closing assist mechanism, and although it has a certain degree of closing assist, achieving the goal of effortless door closing, the six-bar linkage is prone to generate rotational torque during rotation. Under the influence of radial stress, the six-bar linkage is prone to uneven force, resulting in door closing jerking, or even failure to assist in opening and closing the door. Especially when used on doors with large loads, manual assistance is still required to close the door, the transmission performance is poor, and the quality of use still needs to be improved.

[0006] The power assist mechanism installed with the above hinge structure is complex in structure, high in cost, large in size, occupies installation space, and has great limitations in use.

[0007] 3) The hovering opening angle of the above hinge structure cannot reach the maximum design angle, and its use is greatly limited. Summary of the Invention

[0008] The purpose of the invention is to overcome the shortcomings of the existing technology and provide an embedded hinge for a sliding door, which has a simplified structure, high stability, easy installation, and an automatic door closing function. It is easy to use, has a better experience, and ensures the quality of use.

[0009] The object of the present invention is achieved as follows: an embedded hinge for a sliding door, comprising a fixed seat, a base and a transmission component for relative opening and closing of the fixed seat and the base, wherein the transmission component comprises a six-link assembly and an automatic closing power assembly, the fixed end and the swing end of the six-link assembly are hinged on the fixed seat and the base respectively, the automatic closing power assembly comprises a cam and a leaf spring, the cam is mounted on the base, the leaf spring is mounted on the swing end of the six-link assembly, and the two elastic ends of the leaf spring are respectively connected to the six-link assembly and the cam, the cam is provided with a sliding convex arc surface for generating a rotating closing force arm with the leaf spring under the elastic force of the leaf spring, and one elastic end of the leaf spring is always slidably connected to the sliding convex arc surface as the base closes.

[0010] According to the above optimization, the elastic force of the leaf spring passes through the tangent point between the leaf spring and the sliding convex arc surface and acts on the cam, so that a rotating closing force arm is formed between the base and the fixed seat during the closing period.

[0011] According to the above optimization, one end of the sliding convex arc surface is connected to a groove position for generating a self-locking closing force between the base and the fixed seat under the action of the elastic force of the leaf spring, and one elastic end of the leaf spring slides into or out of the groove position as the base opens and closes.

[0012] According to the above optimization, the cam is provided with a sliding arc surface which is slidably connected to the leaf spring and forms a three-point collinear position with the contact point of the leaf spring to realize the suspension of the base. The sliding arc surface is connected to the sliding convex arc surface, and one elastic end of the leaf spring is always slidably connected to the sliding arc surface as the base opens.

[0013] According to the above optimization, the cam is clamped on the base, the base is equipped with a connecting pin hinged to the six-link assembly, the cam is provided with a through hole for the connecting pin to pass through, and the through hole is concentric with the sliding arc surface.

[0014] According to the above optimization, the six-link assembly includes a transmission arm, a connecting arm, a connecting rod, and a rocker arm. The swing ends of the connecting arm and the connecting rod are respectively hinged on the base, and the connecting ends of the connecting arm and the connecting rod are hinged front and back to the swing end of the transmission arm. The positioning end of the transmission arm is hinged on the fixed seat. The cam is connected to the hinge point between the connecting arm and the base. The connecting arm is equipped with a fixed shaft for fixing the leaf spring and a positioning pin connected to an elastic end of the leaf spring.

[0015] According to the above optimization, the connection point between the sliding arc surface and one elastic end of the leaf spring, the connection point between the other elastic end of the leaf spring and the fixed axis, and the hinge point between the connecting arm and the base are in a colinear position to form a hovering state between the base and the fixed seat during opening.

[0016] According to the above optimization, the base is provided with a mounting seat with a mounting hole, the mounting seat is spliced ​​on one side of the base, and the upper mounting seat is provided with a connecting block fixed on the upper surface of the base.

[0017] The advantages of the present invention are:

[0018] The cam and the leaf spring cooperate with each other to generate a rotating closing force arm when the leaf spring slides to the sliding convex arc surface during closing, thereby realizing the automatic closing function, facilitating operation, simplifying the structure, reducing the size and making installation easier.

[0019] After the hinge is closed, the leaf spring acts to make the hinge self-locking, thus preventing it from opening by mistake and making it safer to use.

[0020] By utilizing the structural coordination of the automatic closing power assembly and the six-link assembly, the structural characteristics of the automatic closing power assembly can avoid the generation of rotational torsional force and uneven force when the six-link assembly swings, thereby improving the stability and smoothness of the six-link assembly transmission and ensuring the quality of product use.

[0021] By adding a mounting base, the assembly of the base and the door body is facilitated, holes need not be drilled on the base, the compressive strength is enhanced, the assembly stability is ensured, and the quality of the product is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a preferred embodiment of the present invention in a closed state.

[0023] Figure 2 It is a cross-sectional view of a preferred embodiment of the present invention in a closed state.

[0024] Figure 3 A preferred embodiment of the present invention Figure 2 A magnified view of the middle panel.

[0025] Figure 4 This is a structural diagram of a preferred embodiment of the present invention in an open state.

[0026] Figure 5 This is a cross-sectional view of a preferred embodiment of the present invention in an opened state.

[0027] Figure 6 A preferred embodiment of the present invention Figure 5 Magnified view of B.

[0028] Figure 7 This is a schematic structural diagram of a cam in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] According to the attached Figures 1 to 7 As shown, an embedded hinge for a sliding door includes a fixed seat 1, a base 2 and a transmission component for relative opening and closing of the fixed seat 1 and the base 2, wherein the transmission component includes a six-link assembly 3 and an automatic closing power assembly, the fixed end and the swing end of the six-link assembly 3 are hinged on the fixed seat 1 and the base 2 respectively, the automatic closing power assembly includes a cam 4 and a leaf spring 5, the cam 4 is mounted on the base 2, the leaf spring 5 is mounted on the swing end of the six-link assembly 3, and the two elastic ends of the leaf spring 5 are respectively connected to the six-link assembly 3 and the cam 4, the cam 4 is provided with a sliding convex arc surface 41 for generating a rotating closing force arm with the leaf spring 5 under the elastic force of the leaf spring 5, and one elastic end of the leaf spring 5 is always slidably connected to the sliding convex arc surface 41 as the base 2 is closed.

[0031] Reference Figures 1 to 7 As shown, in further detail, the six-link assembly 3 includes a transmission arm 31, a connecting arm 32, a connecting rod 33, and a rocker arm 34. The swing ends of the connecting arm 32 and the connecting rod 33 are respectively hinged on the base 2, and the connecting ends of the connecting arm 32 and the connecting rod 33 are hinged front and back to the swing end of the transmission arm 31. The positioning end of the transmission arm 31 is hinged on the fixed seat 1, and the cam 4 is connected to the hinge point between the connecting arm 32 and the base 2. The connecting arm 32 is equipped with a fixed shaft 6 for fixing the leaf spring 5 and a positioning pin 7 connected to an elastic end of the leaf spring 5.

[0032] By utilizing the structural coordination between the automatic closing power assembly and the six-link assembly 3, the structural characteristics of the automatic closing power assembly can avoid the generation of rotational torsional force and uneven force when the six-link assembly 3 swings, thereby improving the stability and smoothness of the transmission of the six-link assembly 3 and ensuring the quality of product use.

[0033] Furthermore, during the closing period, when the leaf spring 5 rotates with the six-link assembly 3 and slides to the sliding convex arc surface 41 of the cam 4, the elastic force of the leaf spring 5 passes through the intersection of the leaf spring 5 and the sliding convex arc surface 41 and acts on the cam 4, so that a rotating closing force arm is formed between the base 2 and the fixed base 1 during the closing period, so as to realize the automatic closing function, facilitate operation, and at the same time simplify the structure, small size, and easy installation.

[0034] Reference Figures 1 to 7 As shown, one end of the sliding convex arc surface 41 is connected to a groove position 42 for generating a self-locking closing force between the base 2 and the fixed base 1 under the elastic force of the leaf spring 5. One elastic end of the leaf spring 5 slides into or out of the groove position 42 as the base 2 opens and closes.

[0035] Cooperating with the structure of the groove position 42, when the hinge is closed, the leaf spring 5 is clamped on the groove position 42, and under the action of the leaf spring 5, the hinge has a self-locking function to avoid accidental opening, and is safe to use.

[0036] Reference Figures 1 to 7 As shown in the figure, the cam 4 is further refined, and is provided with a sliding arc surface 43 that is slidably connected to the leaf spring 5 and forms a three-point collinear position with the contact point of the leaf spring 5 to achieve the hovering of the base 2. The sliding arc surface 43 is connected to the sliding convex arc surface 41, and one elastic end of the leaf spring 5 is always slidably connected to the sliding arc surface 43 as the base 2 opens.

[0037] At the same time, the cam 4 is clamped on the base 2, and the base 2 is equipped with a connecting pin hinged to the six-link assembly 3. The cam 4 is provided with a through hole 44 for the connecting pin to pass through, and the through hole 44 is concentric with the sliding arc surface 43.

[0038] During the opening of the hinge, when one elastic end of the leaf spring 5 slides to the sliding arc surface 43, the connection point between the sliding arc surface 43 and one elastic end of the leaf spring 5, the connection point between the other elastic end of the leaf spring 5 and the fixed shaft 6, and the hinge point between the connecting arm 32 and the base 2 are in a collinear position between the base 2 and the fixed seat 1 during the opening period, and no opening force arm or closing force arm is generated, thereby realizing the hinge opening hovering function.

[0039] In addition, the base 2 is provided with a mounting seat 8 with a mounting hole. The mounting seat 8 is spliced ​​on one side of the base 2 , and the mounting seat 8 is provided with a connecting block 9 fixed on the upper surface of the base 2 .

[0040] By adding the mounting seat 8, the assembly of the base 2 and the door body is facilitated, and holes in the base 2 are avoided, thereby enhancing the compressive strength, ensuring assembly stability, and ensuring the quality of product use.

[0041] The above specific embodiments are only specific implementation methods with better effects of the present invention. Any structure that is the same or equivalent to the embedded hinge for the sliding door of the present invention is within the protection scope of the present invention.

Claims

1. An embedded hinge for a sliding door, comprising a fixed seat (1), a base (2) and a transmission component for enabling the fixed seat (1) and the base (2) to open and close relative to each other, characterized in that: The transmission component comprises a six-link assembly (3) and an automatic closing power assembly, wherein the fixed end and the swing end of the six-link assembly (3) are hinged on the fixed seat (1) and the base (2) respectively, and the automatic closing power assembly comprises a cam (4) and a leaf spring (5), wherein the cam (4) is mounted on the base (2), and the leaf spring (5) is mounted on the swing end of the six-link assembly (3), and the two elastic ends of the leaf spring (5) are respectively connected to the six-link assembly (3) and the cam (4), and the cam (4) is provided with a sliding convex arc surface (41) for generating a rotational closing force arm with the leaf spring (5) under the elastic force of the leaf spring (5), and one elastic end of the leaf spring (5) is always slidably connected to the sliding convex arc surface (41) as the base (2) closes; The elastic force of the leaf spring (5) passes through the tangent point between the leaf spring (5) and the sliding convex arc surface (41) and acts on the cam (4), so that a rotating closing force arm is formed between the base (2) and the fixed seat (1) during the closing period; One end of the sliding convex arc surface (41) is connected to a groove position (42) for generating a self-locking closing force between the base (2) and the fixed base (1) under the elastic force of the leaf spring (5), and one elastic end of the leaf spring (5) slides into the groove position (42) or slides out of the groove position (42) as the base (2) opens and closes; The cam (4) is provided with a sliding arc surface (43) which is slidably connected to the leaf spring (5) and forms a three-point collinear position with the contact point of the leaf spring (5) to realize the suspension of the base (2). The sliding arc surface (43) is connected to the sliding convex arc surface (41). An elastic end of the leaf spring (5) is always slidably connected to the sliding arc surface (43) as the base (2) opens.

2. The embedded hinge for a sliding door according to claim 1, characterized in that: The cam (4) is mounted on the base (2). The base (2) is provided with a connecting pin hinged to the six-link assembly (3). The cam (4) is provided with a through hole (44) for the connecting pin to pass through. The through hole (44) and the sliding arc surface (43) are concentric circles.

3. The embedded hinge for a sliding door according to claim 1, characterized in that: The six-link assembly (3) comprises a transmission arm (31), a connecting arm (32), a connecting rod (33), and a rocking rod (34). The swinging ends of the connecting arm (32) and the connecting rod (33) are respectively hinged on the base (2). The connecting ends of the connecting arm (32) and the connecting rod (33) are hinged to the swinging end of the transmission arm (31) in a front-back manner. The positioning end of the transmission arm (31) is hinged to the fixed seat (1). The cam (4) is connected to the hinge point between the connecting arm (32) and the base (2). The connecting arm (32) is equipped with a fixed shaft (6) for fixing a leaf spring (5) and a positioning pin (7) connected to an elastic end of the leaf spring (5).

4. The embedded hinge for a sliding door according to claim 3, characterized in that: The connection point between the sliding arc surface (43) and one elastic end of the leaf spring (5), the connection point between the other elastic end of the leaf spring (5) and the fixed shaft (6), and the hinge point between the connecting arm (32) and the base (2) are in a collinear position for forming a hovering state between the base (2) and the fixed seat (1) during the opening period.

5. The embedded hinge for a sliding door according to claim 1, characterized in that: The base (2) is provided with a mounting seat (8) with a mounting hole, the mounting seat (8) is spliced ​​on one side of the base (2), and the mounting seat (8) is provided with a connecting block (9) fixed on the upper surface of the base (2).

Images