A central damping closing mechanism with embedded hinge

Abstract

The present invention discloses a central damping closing mechanism with an embedded hinge, comprising a fixed seat and a base, wherein the fixed seat and the base are provided with a transmission assembly; the transmission assembly comprises a main beam, a connecting arm and a small beam arm, a door-closing spring for damping the rotating connecting arm is installed in the main beam, a cam is provided at the left end of the connecting arm, and a roller for slidingly connecting with the cam is provided at the telescopic end of the roller; a damper is installed in the base through a torsion spring, and a clamping opening for sliding clamping of the damper is opened in the middle position of the damping connecting block; the present invention cooperates with the door-closing spring and the damper, so that the transmission assembly is subjected to more uniform force at multiple points during the door closing process, reduces the overall jitter and noise of the transmission assembly, and is more stable and quiet at the moment of door closing, and auxiliary damping is not achieved throughout the entire process, and the damping effect is only achieved within a small closed angle range.

Description

Technical Field

[0001] The invention relates to the technical field of hinge devices, in particular to a damping closing mechanism with an embedded hinge center. Background Art

[0002] The door panel and the cabinet body are usually connected by a hinge assembly. At present, many products directly set damping devices between the door body and the cabinet body to reduce the impact during the opening and closing of the door. However, the full-range damping action makes the opening and closing of the door difficult, affecting the user experience. In addition, for many hinges with built-in damping mechanisms, a single-point buffering method is mostly adopted. When the hinge itself is subjected to impact force, the force on the damping mechanism is uneven during the opening and closing process of the hinge, which will cause a large mechanical impact on the single damping mechanism, the noise is large, and the service life of the damping mechanism is not high. Therefore, we need to improve a damping hinge device based on the general damping hinge to further improve the damping service life, reduce noise and balance the force.

[0003] Based on this, the present invention designs a center-point embedded hinge damping closing mechanism to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a central damping closing mechanism with an embedded hinge to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A central damping closing mechanism with an embedded hinge comprises a fixing seat installed on a cabinet body, a base installed on a door body, and a transmission assembly hinged between the fixing seat and the base;

[0007] The transmission assembly comprises a main beam, a connecting arm and a small beam arm, the left ends of the main beam and the small beam arm are respectively hinged on the fixing seat at intervals, the main beam is hinged to the middle position of the base through the connecting arm, the main beam and the connecting arm are hinged to each other, the base and the connecting arm are hinged to each other, the right end of the small beam arm is hinged to the middle section of the connecting arm, a damping connecting block is hinged at the middle section of the small beam arm, and the right end of the damping connecting block is hinged to the left section of the base;

[0008] A damper is installed in the base through a torsion spring frame, and a locking opening is opened in the middle position of the damping connecting block. When the fixed seat and the base are kept vertically closed, the telescopic end of the damper is provided with a damping rod that normally extends outward, and the non-telescopic end of the damper is coaxially hinged with the right end of the connecting arm at the middle position of the base. The damping rod of the damper is against the locking opening and the damping rod is in a maximum compression state. When the base is flipped open from the above-mentioned fixed seat, the damping rod gradually extends out and disengages from the locking opening.

[0009] Preferably, a door closing spring for providing closing force to the rotating connecting arm is installed in the beam, a cam is provided at the left end of the connecting arm, and a roller for slidingly connecting with the cam is provided at the telescopic end of the door closing spring, and before the base is about to be completely closed onto the fixed seat, the cam protrusion section rolls in contact with the roller.

[0010] Preferably, the cam is hook-shaped, and when the base is completely closed onto the conveying fixed seat, the roller is clamped in the hook-shaped position of the cam.

[0011] Preferably, the damping connecting block is integrally covered in the damping connecting arm, and the left and right ends of the damping connecting arm and the left and right ends of the damping connecting block are coaxially hinged at the middle section of the small beam arm and the base respectively.

[0012] Preferably, the damping connecting block is in the shape of an arc surface convex outwardly toward the base and the side wall of the damper.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention sets the stress point of the damper at the center between the main beam and the small beam arm, so that the transmission component is more evenly stressed at multiple points during the door closing process, reducing the overall vibration and noise of the transmission component, and the door closing moment is smoother and quieter;

[0015] 2. The damper provided in the present invention does not realize auxiliary damping throughout the entire process, but only realizes the damping effect within a small closed angle range, thereby preventing the door from being closed with difficulty throughout the entire process, and does not affect the normal closing speed. In addition, it can reduce the mechanical loss of the door closing spring itself, and increase the service life of the entire transmission assembly between the fixing seat and the base;

[0016] 3. The door closing spring provided in the present invention provides an automatic door closing force for closing the base 2 through the cooperation of the cam and the roller, and can cooperate well with the damping action of the central damper to achieve the effect of automatic silent closing. At the same time, the cooperation of the hook-shaped cam and the roller can also achieve a certain self-locking function. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention from a front side perspective;

[0019] Figure 2 for Figure 1 Cross-section of the state;

[0020] Figure 3 This is a schematic diagram of the structure when the damper intervenes during the base closing process;

[0021] Figure 4 for Figure 3 Cross-section of the state;

[0022] Figure 5 An exploded view of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure when the base is closed on the fixed base;

[0024] Figure 7 for Figure 6 Cross-section of the state;

[0025] Figure 8 It is a structural schematic diagram of a torsion spring frame;

[0026] Fig. 9 It is a structural schematic diagram when the damper is installed on the torsion spring frame and contacts and cooperates with the damping connecting block;

[0027] Fig.10 It is a schematic cross-sectional diagram of different states a to f when the base is opened from the maximum opening angle to closed on the fixed seat.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] Fixed seat 1, base 2, beam 3, connecting arm 4, cam 40, door closing spring 5, roller 50, small beam arm 6, damping connecting arm 7, damping connecting block 8, positioning opening 80, damper 9, torsion spring frame 90, damping rod 91. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-10 , the present invention provides a technical solution:

[0032] A central damping closing mechanism with an embedded hinge comprises a fixing seat 1 installed on a cabinet, a base 2 installed on a door body, and a transmission assembly hinged between the fixing seat 1 and the base 2;

[0033] The transmission assembly includes a main beam 3, a connecting arm 4 and a small beam arm 6, the left ends of the main beam 3 and the small beam arm 6 are respectively hinged on the fixing seat 1 at intervals, the main beam 3 is hinged to the middle position of the base 2 through the connecting arm 4, the main beam 3 and the connecting arm 4 are hinged to each other, the base 2 and the connecting arm 4 are hinged to each other, the right end of the small beam arm 6 is hinged to the middle section of the connecting arm 4, the middle section of the small beam arm 6 is hinged with a damping connecting block 8, and the right end of the damping connecting block 8 is hinged to the left section of the base 2;

[0034] A damper 9 is installed in the base 2 through a torsion spring frame 90, and a locking opening 80 is opened in the middle position of the damping connecting block 8. When the fixed seat 1 and the base 2 are kept vertically closed, the telescopic end of the damper 9 is provided with a damping rod 91 that normally extends outward. The non-telescopic end of the damper 9 is coaxially hinged with the right side end of the connecting arm 4 at the middle position of the base 2. The damping rod 91 of the damper 9 is against the locking opening 80 and the damping rod 91 is in a maximum compression state. When the base 2 is flipped open from the above-mentioned fixed seat 1, the damping rod 91 gradually extends out and disengages from the locking opening 80.

[0035] When working, Fig.10 As shown, when the base 2 is in the process of being turned over to the closed state, when it is about to be closed, the damping rod 91 of the damper 9 will hit the locking opening 80 of the damping connecting block 8 during the rotation of the base 2. At this time, the damping rod 91 begins to compress and provide a damping buffering effect on the rotation and closing of the base 2 until the base 2 is completely attached to the fixed seat 1. In this process, since the damping connecting block 8 itself is also rotating, in order to ensure that there is a risk of disengagement between the damping rod 91 and the locking opening 80, the right side of the non-telescopic end of the damper 9 is also hinged to the middle section of the base 2 together with the right side end of the connecting arm 4, and cooperates with the torsion spring frame 90 to realize the rotation support of the damper 9 and the reset action of the damper 9 as a whole after the damping rod 91 is disengaged from the locking opening 80.

[0036] Therefore, the present invention shares the buffering force point through the base 2, the small beam arm 6, the large beam 3 and the connecting arm 4 through the damper 9 arranged at the center position, and is not limited to the single-point force on the two components. During the closing process of the base 2, the transmission component is subjected to multiple force points at different points, so that the transmission component is subjected to force more evenly during the door closing process, reducing the overall jitter and noise of the transmission component, and the door closing moment is smoother and quieter. In addition, auxiliary damping is not achieved throughout the entire process, and the damping effect is only achieved within a small closing angle range, thereby preventing the door from being difficult to close throughout the entire process and not affecting the normal door closing speed.

[0037] A closing spring 5 for providing a closing force to the rotating connecting arm 4 is installed in the beam 3, a cam 40 is provided at the left end of the connecting arm 4, and a roller 50 for slidingly connecting with the cam 40 is provided at the telescopic end of the closing spring 5. Before the base 2 is about to be completely closed onto the fixed seat 1, the raised section of the cam 40 is in rolling contact with the roller 50;

[0038] During operation, when the base 2 rotates, the beam 3 and the connecting arm 4 also rotate accordingly, and the connecting arm 4 will come into contact with the roller 50 of the door closing spring 5 through the cam 40. When the cam 40 contacts the circular arc section, the roller 50 does not generate compression deformation on the door closing spring 5. Fig.10 In the middle state a, the force value of the door closing spring 5 is the largest at this time, but the tangent point of the roller 50 and the cam 40 just passes through the line connecting the two circle centers, so no door closing force is generated at this time. When the base 2 is about to close to the fixed base 1, as shown in FIG. Fig.10 In the middle e state, the door-closing spring 5 reaches the critical value of the compression state. When the base 2 is closed toward the fixed base 1 again, the roller 50 bypasses the protruding point of the cam 40, and the door-closing force begins to be generated after the intersection point passes through the line connecting the centers of the circles. The door-closing spring 5 will generate a rotational door-closing force on the base 2 toward the fixed base 1, so that the base 2 automatically closes to the fixed base 1.

[0039] It is defined here that before the base 2 is about to be completely closed onto the fixed base 1, the raised section of the cam 40 is in rolling contact with the roller 50, mainly for the following reasons: in the process of the base 2 being closed by a large angle, the arc surfaces of the cam 40 and the roller 50 are in contact with each other and will not cause compression deformation to the door closing spring 5, so that in most of the closing process, the door closing action is relatively easy and can be easily completed. Only at the moment of closing the door will the door closing spring 5 release its elastic potential energy, thereby increasing the door closing force applied by the roller 50 and the cam 40 to the base 2, so that the door body is automatically closed tightly.

[0040] The cam 40 is hook-shaped, and when the base 2 is completely closed onto the conveying fixed seat 1, the roller 50 is clamped in the hook-shaped position of the cam 40. The hook-shaped cam 40 cooperates with the roller 50 to achieve a certain self-locking function.

[0041] The damping connecting block 8 is integrally covered in the damping connecting arm 7, and the left and right ends of the damping connecting arm 7 and the left and right ends of the damping connecting block 8 are coaxially hinged at the middle section of the small beam arm 6 and the base 2 respectively;

[0042] During operation, the damping connecting arm 7 provided here, on the one hand, limits the damping connecting block 8, and on the other hand, limits the end of the damping rod 91 to a certain extent, so as to facilitate the docking and disengagement of the damping rod 91 and the positioning opening 80, and prevent the contact dislocation between the damping rod 91 and the positioning opening 80 during repeated contact or disengagement.

[0043] The side wall of the damping connecting block 8 facing the base 2 and the damper 9 is in an outwardly convex arc shape;

[0044] During operation, the convex arc surface of the damping connecting block 8 can conveniently guide the damping rod 91 to abut against the locking opening 80 .

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A central damping closing mechanism with an embedded hinge, comprising a fixing seat (1) mounted on a cabinet, a base (2) mounted on a door body, and a transmission assembly hinged between the fixing seat (1) and the base (2), characterized in that: The transmission assembly comprises a main beam (3), a connecting arm (4) and a small beam arm (6); the left ends of the main beam (3) and the small beam arm (6) are respectively hinged on the fixing seat (1) at intervals; the main beam (3) is hinged to the middle position of the base (2) through the connecting arm (4); the main beam (3) and the connecting arm (4) are hinged to each other; the base (2) and the connecting arm (4) are hinged to each other; the right end of the small beam arm (6) is hinged to the middle section of the connecting arm (4); a damping connecting block (8) is hinged at the middle section of the small beam arm (6); and the right end of the damping connecting block (8) is hinged to the left section of the base (2); A damper (9) is installed in the base (2) via a torsion spring frame (90); a locking opening (80) is provided in the middle of the damping connecting block (8); when the fixing seat (1) and the base (2) are kept vertically closed, the telescopic end of the damper (9) is provided with a damping rod (91) which normally extends outward; the non-telescopic end of the damper (9) is coaxially hinged with the right end of the connecting arm (4) at the middle section of the base (2); the damping rod (91) of the damper (9) abuts against the locking opening (80) and the damping rod (91) is in a maximum compression state; when the base (2) is flipped open from the fixing seat (1), the damping rod (91) gradually extends out and disengages from the locking opening (80).

2. A central damping closing mechanism with an embedded hinge according to claim 1, characterized in that: A door closing spring (5) for providing a closing force to the rotating connecting arm (4) is installed in the beam (3); a cam (40) is provided at the left end of the connecting arm (4); a roller (50) for slidingly connecting with the cam (40) is provided at the telescopic end of the door closing spring (5); and before the base (2) is about to be completely closed onto the fixed seat (1), the raised section of the cam (40) is in rolling contact with the roller (50).

3. A central damping closing mechanism with embedded hinge according to claim 2, characterized in that: The cam (40) is hook-shaped, and when the base (2) is completely closed onto the conveying fixed seat (1), the roller (50) is clamped at the hook-shaped position of the cam (40).

4. A central damping closing mechanism with embedded hinge according to claim 1, characterized in that: The damping connecting block (8) is integrally covered in the damping connecting arm (7), and the left and right ends of the damping connecting arm (7) and the left and right ends of the damping connecting block (8) are coaxially hinged at the middle section of the small beam arm (6) and the base (2), respectively.

5. The central damping closing mechanism with embedded hinge according to claim 1, characterized in that: The side wall of the damping connecting block (8) facing the base (2) and the damper (9) is in the shape of an outwardly protruding arc surface.

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