Hinge with small-angle bidirectional buffering function

Abstract

The utility model provides a hinge with a small-angle two-way buffering function, which comprises a hinge cup, a hinge seat and a hinge transmission group hinged between the hinge cup and the hinge seat, the hinge seat is provided with a power torsion spring, the hinge cup is provided with a reset spring and a two-way buffering component, the two-way buffering component comprises a buffer and a buffering connecting plate, the buffering connecting plate is movably connected in the hinge cup, and the buffering connecting plate is connected with the hinge cup. The two elastic ends of the reset spring are connected to the buffer connecting plate and the hinge cup respectively, the buffer is installed on one side of the hinge cup, a push rod of the buffer is connected with the buffer connecting plate, the buffer connecting plate is provided with a connecting boss, and the connecting boss is connected with or separated from the hinge transmission set along with opening and closing of the hinge cup. The bidirectional buffer device is simple in structure, high in transmission stability, applicable to products with small space and high in applicability, the buffer is externally arranged, the bidirectional buffer function can be achieved by small-angle opening and closing, and the using effect of the products is ensured.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, specifically a hinge with a small-angle bidirectional buffer function. Background Technology

[0002] Hinges are widely used in doors, windows, furniture, and home appliances, especially microwave ovens and ovens. The structure of a typical hinge generally includes a hinge cup mounted on the door, a hinge seat mounted on the door housing, and a hinge transmission assembly connecting the hinge cup and the hinge seat. This hinge transmission assembly powers the hinge cup to open and close on the hinge seat, thus opening and closing the door on the door housing.

[0003] During opening and closing, especially under heavy loads, the door may collide with the hinge housing, generating noise and potentially damaging the product. To address this, existing hinges incorporate a damper to provide a buffering effect during closing.

[0004] However, the above-mentioned buffer hinge has the following shortcomings in practical applications:

[0005] 1) Existing buffer hinges, traditional buffers are generally installed inside the hinge seat, resulting in a complex structure and large size, which is not suitable for products with limited space and has great limitations in use.

[0006] 2) Existing buffer hinges generally only have a buffering function when closed, which is a single function. If they have a two-way buffering function, the structure is complex, which will also lead to complex transmission and poor stability. At the same time, it is difficult to achieve a two-way buffering function by opening and closing at a small angle, which reduces the product's performance. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hinge with a small-angle bidirectional buffer function. It has a simple structure, an external buffer, and can achieve bidirectional buffer function by opening and closing at a small angle. It has high transmission stability, is suitable for use in products with limited space, has wide applicability, and ensures the product's performance.

[0008] The objective of this invention is achieved as follows: A hinge with a small-angle bidirectional buffer function includes a hinge cup installed on the door body, a hinge seat installed on the cabinet body, and a hinge transmission assembly hinged between the hinge cup and the hinge seat. The hinge seat is equipped with a power torsion spring for the hinge cup to automatically close on the hinge seat. The hinge cup is provided with a return spring and a bidirectional buffer component. The bidirectional buffer component includes a buffer and a buffer connecting plate. The buffer connecting plate is movably connected inside the hinge cup. The two elastic ends of the return spring are respectively connected to the buffer connecting plate and the hinge cup. The buffer is installed on one side of the hinge cup, and its push rod is connected to the buffer connecting plate. The buffer connecting plate is provided with a connecting boss for keeping the buffer in a working state during the small-angle opening and closing of the hinge cup, or for keeping the buffer in an initial state during the large-angle opening to full opening of the hinge cup. The connecting boss is connected to or separated from the hinge transmission assembly as the hinge cup opens and closes.

[0009] Based on the above optimization, the hinge cup is provided with a limiting plate for restricting the installation position of the buffer connecting plate. The limiting plate can be detached and installed inside the hinge cup and forms a limiting guide groove with the hinge cup to restrict the movement of the buffer connecting plate.

[0010] Based on the above optimization, the outer edge of the limiting plate is provided with snap-fit ​​protrusions, and the side wall of the hinge cup is provided with snap-fit ​​holes corresponding to the snap-fit ​​protrusions. The snap-fit ​​protrusions are engaged with the snap-fit ​​holes so that the limiting plate can be detached and installed above the buffer connecting plate.

[0011] Based on the above optimization, one end of the buffer connecting plate extends upward and is bent to form a connecting boss.

[0012] Based on the above optimization, the articulated transmission assembly includes a hinge arm and a swing arm. One end of the hinge arm and the swing arm are respectively hinged to the hinge arm via U-shaped pins. The other end of the hinge arm and the swing arm are respectively hinged to the hinge seat via a connecting shaft and a swing shaft. The power torsion spring is mounted on the connecting shaft and its two elastic ends are respectively connected to the hinge seat and the swing arm. The hinge arm slides and separates from the connecting boss as the hinge cup opens and closes.

[0013] Based on the above optimization, a groove is provided on one side of the hinge cup for external placement of the buffer. The buffer is installed in the groove, and the push rod of the buffer passes through the hinge cup and connects to the buffer connecting plate.

[0014] Based on the above optimization, the groove is provided with a fixing plate for fixing the buffer.

[0015] The advantages of this utility model are:

[0016] 1) Through the structural cooperation of the buffer, buffer connecting plate, hinge cup, and hinge transmission assembly in the bidirectional buffer component, when the hinge cup begins to close to a small angle, the hinge transmission assembly initially connects with the connecting boss of the buffer connecting plate. As it continues to close to the fully open state, the buffer and the power torsion spring achieve a uniform and slow closing. When the hinge cup opens from fully closed to a certain small angle, the buffer connecting plate remains connected to the hinge transmission assembly under the action of the return spring, and the buffer remains operational to achieve a buffering function during opening. When the hinge cup is fully open, the hinge transmission assembly separates from the boss of the buffer connecting plate, and the buffer ceases to function. This design is simple, achieves bidirectional buffering function with small-angle opening and closing, has high transmission stability, and is suitable for products with limited space, ensuring optimal product performance.

[0017] 2) The structure of the buffer with the buffer externally mounted on the hinge cup simplifies the structure, expands the usable space of the main body of the product, and has a wide range of applications. Attached Figure Description

[0018] Appendix Figure 1 This is a schematic diagram of the structure in the open state of a preferred embodiment of the present invention.

[0019] Appendix Figure 2 This is a cross-sectional view of the preferred embodiment of the present invention in its open state.

[0020] Appendix Figure 3 This is a cross-sectional view of the preferred embodiment of the present invention during the small-angle closure period.

[0021] Appendix Figure 4 This is a cross-sectional view of the preferred embodiment of the present invention in its fully closed state.

[0022] Appendix Figure 5 This is a schematic diagram showing the relationship between the hinged transmission assembly and the buffer connecting plate in a preferred embodiment of the present invention.

[0023] Appendix Figure 6 This is a partial exploded view of a preferred embodiment of the present invention. Detailed Implementation

[0024] The present invention will now be further described with reference to the accompanying drawings.

[0025] According to the appendix Figures 1 to 6As shown in the figure, the hinge of this utility model with small-angle bidirectional buffer function includes a hinge cup 1 installed on the door body, a hinge seat 2 installed on the cabinet body, and a hinge transmission assembly 3 hinged between the hinge cup 1 and the hinge seat 2. The hinge seat 2 is equipped with a power torsion spring 4 for the hinge cup 1 to automatically close in the hinge seat 2. The hinge cup 1 is provided with a return spring 5 and a bidirectional buffer component, which includes a buffer 6 and a buffer connecting plate 7. The buffer connecting plate 7 is movably connected inside the hinge cup 1. The two elastic ends of the return spring 5 are respectively connected to the buffer connecting plate 7 and the hinge cup 1. The buffer 6 is installed on one side of the hinge cup 1, and its push rod is connected to the buffer connecting plate 7. The buffer connecting plate 7 is provided with a connecting boss 71 for keeping the buffer 6 in a working state during the small-angle opening and closing of the hinge cup 1, or for keeping the buffer 6 in an initial state during the large-angle opening to full opening of the hinge cup 1. The connecting boss 71 connects to or separates from the hinge transmission assembly 3 as the hinge cup 1 opens and closes.

[0026] Reference Figures 1 to 6 As shown in the figure, further detailed, the hinged transmission assembly 3 includes a hinge arm 31 and a swing arm 32. One end of the hinge arm 31 and the swing arm 32 are respectively hinged to the hinge arm 31 by a U-shaped pin. The other end of the hinge arm 31 and the swing arm 32 are respectively hinged to the hinge seat 2 by a connecting shaft and a swing shaft. The power torsion spring 4 is fitted on the connecting shaft and its two elastic ends are respectively connected to the hinge seat 2 and the swing arm 32. The hinge arm 31 slides and connects or separates from the connecting boss 71 as the hinge cup 1 opens and closes.

[0027] When the hinge cup 1 begins to close to a small angle, such as when it closes to the range of 35-45 degrees, the front end plane of the hinge arm 31 begins to contact and connect with the connecting boss 71. As the hinge cup 1 rotates, the front end of the hinge arm 31 slides and connects with the connecting boss 71. When the hinge cup 1 continues to close to the fully closed state, the hinge arm 31 automatically closes towards the hinge seat 2 under the action of the power torsion spring 4. The buffer connecting plate 7 moves inward accordingly and pushes the buffer 6 to work, thereby achieving the purpose of the door closing slowly and uniformly.

[0028] When the hinge cup 1 is opened to a large angle or in the fully open state, the hinge arm 31 slides away from the connecting boss 71 of the buffer connecting plate 7, and the buffer connecting plate 7 is in the initial position under the action of the return spring 5, and the buffer 6 does not work.

[0029] When the hinge cup 1 opens from the fully closed position to a certain small angle, such as when the hinge cup 1 opens to a position of approximately ≥5 degrees, under the action of the return spring 5, the connecting boss 71 of the buffer connecting plate 7 is always in contact with the hinge arm 31, and the buffer 6 is always in working condition so as to achieve the buffering function when the hinge opens at a small angle.

[0030] Under the action of the buffer 6 and the power torsion spring 4, a uniform and slow closing is achieved. When the hinge cup 1 opens from fully closed to a certain small angle, the buffer connecting plate 7 is always connected to the hinge transmission assembly 3 under the action of the return spring 5, and the buffer 6 remains in working condition at all times to achieve a buffering function during opening. When the hinge cup 1 is fully open, the hinge transmission assembly 3 separates from the boss of the buffer connecting plate 7, and the buffer 6 stops working. The structure is simple, can achieve bidirectional buffering function by opening and closing at a small angle, has high transmission stability, is suitable for products with limited space, and ensures the product's performance.

[0031] Reference Figures 1 to 6 As shown, in further detail, the hinge cup 1 is provided with a limiting plate 8 for limiting the installation position of the buffer connecting plate 7. The limiting plate 8 can be detached and installed inside the hinge cup 1 and forms a limiting guide groove with the hinge cup 1 to limit the movement of the buffer connecting plate 7.

[0032] Furthermore, the outer edge of the limiting plate 8 is provided with snap-fit ​​protrusions 81, and the side wall of the hinge cup 1 is provided with snap-fit ​​holes 11 corresponding to the snap-fit ​​protrusions 81. The snap-fit ​​protrusions 81 are engaged and snapped into the snap-fit ​​holes 11 so that the limiting plate 8 can be detached and installed above the buffer connecting plate 7.

[0033] In practical applications, one end of the buffer connecting plate 7 extends upward and is bent to form a connecting boss 71.

[0034] The limiting plate 8 and buffer connecting plate 7 adopted in this structure are simple in structure, effectively restrict the guiding movement of the buffer connecting plate 7, prevent the buffer connecting plate 7 from detaching during use, improve the structural connection stability, and ensure the buffering effect. At the same time, it is convenient to disassemble and assemble, and easy to maintain and replace.

[0035] Reference Figures 1 to 6 As shown in the diagram, further details are provided: a recessed position 12 is provided on one side of the hinge cup 1 for external mounting of the buffer 6; the buffer 6 is mounted in the recessed position 12, and the push rod of the buffer 6 passes through the hinge cup 1 and connects to the buffer connecting plate 7. The recessed position 12 is provided with a fixing plate 13 for fixing the buffer 6.

[0036] The structure of the buffer 6, which is externally mounted on the hinge cup 1, simplifies the structure, is suitable for products with limited space, and has wide applicability.

[0037] The above specific embodiments are only specific implementations of the present utility model with better effects. All structures that are the same as or equivalent to the hinge with small-angle bidirectional buffer function of the present utility model are within the protection scope of the present utility model.

Claims

1. A hinge with a small-angle bidirectional buffer function, comprising a hinge cup (1) installed on a door body, a hinge seat (2) installed on a cabinet body, and a hinge transmission assembly (3) hinged between the hinge cup (1) and the hinge seat (2), wherein the hinge seat (2) is equipped with a power torsion spring (4) for the hinge cup (1) to automatically close in the hinge seat (2), characterized in that: The hinge cup (1) is provided with a return spring (5) and a bidirectional buffer component. The bidirectional buffer component includes a buffer (6) and a buffer connecting plate (7). The buffer connecting plate (7) is movably connected inside the hinge cup (1). The two elastic ends of the return spring (5) are respectively connected to the buffer connecting plate (7) and the hinge cup (1). The buffer (6) is installed on one side of the hinge cup (1) and its push rod is connected to the buffer connecting plate (7). The buffer connecting plate (7) is provided with a connecting boss (71) for keeping the buffer (6) in a working state during the small angle opening and closing of the hinge cup (1), or for keeping the buffer (6) in an initial state during the large angle opening to full opening of the hinge cup (1). The connecting boss (71) is connected to or separated from the hinge transmission assembly (3) as the hinge cup (1) opens and closes.

2. The hinge with small-angle bidirectional buffering function according to claim 1, characterized in that: The hinge cup (1) is provided with a limiting plate (8) for limiting the installation position of the buffer connecting plate (7). The limiting plate (8) can be installed and removed inside the hinge cup (1) and forms a limiting guide groove with the hinge cup (1) to limit the movement of the buffer connecting plate (7).

3. The hinge with small-angle bidirectional buffering function according to claim 2, characterized in that: The outer edge of the limiting plate (8) is provided with snap-fit ​​protrusions (81), and the side wall of the hinge cup (1) is provided with snap-fit ​​holes (11) corresponding to the snap-fit ​​protrusions (81). The snap-fit ​​protrusions (81) are matched and snapped into the snap-fit ​​holes (11) so that the limiting plate (8) can be disassembled and installed above the buffer connecting plate (7).

4. The hinge with small-angle bidirectional buffering function according to claim 1, characterized in that: One end of the buffer connecting plate (7) extends upward and is bent to form a connecting boss (71).

5. The hinge with small-angle bidirectional buffering function according to claim 1, characterized in that: The hinge transmission assembly (3) includes a hinge arm (31) and a swing arm (32). One end of the hinge arm (31) and the swing arm (32) are respectively hinged to the hinge arm (31) by a U-shaped pin. The other end of the hinge arm (31) and the swing arm (32) are respectively hinged to the hinge seat (2) by a connecting shaft and a swing shaft. The power torsion spring (4) is mounted on the connecting shaft and its two elastic ends are respectively connected to the hinge seat (2) and the swing arm (32). The hinge arm (31) slides and connects or separates from the connecting boss (71) as the hinge cup (1) opens and closes.

6. The hinge with small-angle bidirectional buffering function according to claim 1, characterized in that: The hinge cup (1) has a groove (12) on one side for the external mounting of the buffer (6). The buffer (6) is mounted in the groove (12), and the push rod of the buffer (6) passes through the hinge cup (1) and is connected to the buffer connecting plate (7).

7. The hinge with small-angle bidirectional buffering function according to claim 6, characterized in that: The groove (12) is provided with a fixing plate (13) for fixing the buffer (6).

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