Box door buffering hinge set

Abstract

A box door buffering hinge set comprises a first hinge mechanism A and a second hinge mechanism B. The first hinge mechanism A and the second hinge mechanism B each comprise a main body and a trigger hinged to the main body, a mounting groove is formed in each main body, a pull arm is mounted in each mounting groove, one end of each pull arm is hinged to the corresponding trigger through a connecting rod, and the other end of each pull arm is hinged to the corresponding trigger through a connecting rod. The other end of the pull arm is connected with a tension spring installed in the installation groove, and the tension spring generates tension to always pull the trigger to move in the closing direction through the pull arm and the connecting rod. The hinge has the advantages that in the two hinge mechanisms in the scheme, only one hinge mechanism is provided with the damper, the hinge mechanism on the other side is in the follow-up state, it is ensured that when a box door is closed, the hinge can achieve the even buffering effect, and the hinge is not prone to falling off. The problem of box door distortion caused by uneven stress of double buffers in the prior art is avoided.

Description

Technical Field

[0001] The utility model relates to a hardware hinge, in particular to a buffer hinge group for a box door. Background Art

[0002] In modern household appliances, such as ovens, smokers, microwave ovens, etc., the stability of the door opening and closing and the quietness when closing are important indicators of product quality. In order to achieve this effect, two sets of hinges are usually used to connect the door to the box body, and a buffer is set in the hinge. However, the existing technical solutions have the following problems:

[0003] 1. In the current technical solution, a buffer is usually set in each hinge mechanism to ensure that the door can be buffered when closing to avoid impact noise. However, since the buffers on both sides are stressed at the same time, the buffers are often unevenly stressed during actual use. This uneven stress may cause the door to twist when closing, affecting the sealing and aesthetics of the door and the box body.

[0004] 2. Although the design of using two sets of buffers can achieve a certain buffering effect, it increases the complexity of manufacturing and installation, resulting in higher production costs. This is obviously not economical for household appliances that need to be produced in large quantities.

[0005] 3. In the existing hinge design, the hinge trigger is usually a flat plate structure. When this structure is installed with the door or box body, the contact area is small and the force point is concentrated, which easily leads to deformation of the connection point. Especially when the door is opened and closed frequently, the deformation will significantly affect the service life of the hinge and the stability of the door, so it is necessary to make further improvements. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a door buffer hinge group with simple structure and easy use, which can achieve consistency of buffering effect through reasonable structural design, reduce production costs, and enhance the stability of the connection between the hinge and the door or box body.

[0007] The utility model aims to achieve the following objectives: a door buffer hinge assembly, comprising a first hinge mechanism A and a second hinge mechanism B, wherein the first hinge mechanism A and the second hinge mechanism B both comprise a main body and a trigger hingedly mounted therewith, a mounting slot is provided in the main body, a pull arm is mounted in the mounting slot, one end of the pull arm is hingedly connected to the trigger through a connecting rod, and the other end is connected to a tension spring mounted in the mounting slot, and the tension spring generates a tension force through the pull arm and the connecting rod to always pull the trigger to move in the closing direction;

[0008] A locking wheel is installed in the connecting rod in a forward and backward sliding manner. The locking wheel is pushed by the push spring to always move in the direction of the trigger. Correspondingly, a concave locking groove is provided on the trigger. When the trigger is closed, the locking wheel is snapped into the locking groove, locking the trigger in a closed state:

[0009] In the first hinge mechanism A, a damper is also installed in the installation groove, and the damper is connected to the pull arm. When the trigger is closed, the damper interacts with the pull arm to slow down the closing speed of the trigger;

[0010] The trigger includes a support portion hinged to the main body, the other end of the support portion extends laterally outward to form a connecting portion, and the other end of the connecting portion extends in a form to form a mounting portion. The support portion, connecting portion and mounting portion are distributed in a "Z" shape.

[0011] Furthermore: the triggers installed on the first hinge mechanism A and the second hinge mechanism B are arranged in a horizontal mirror image.

[0012] Furthermore: a connecting plate is provided on the connecting portion and the mounting portion of the trigger, and a mounting hole is provided on the connecting plate.

[0013] Furthermore: the trigger is formed by integrally bending a metal plate.

[0014] Furthermore: the main body is arranged in an open slot shape, and a mounting seat extends to both sides of the slot opening.

[0015] The beneficial effects of the utility model are: 1. Simple structure, low production cost and improved market competitiveness.

[0016] Among the two hinge mechanisms in this case, the damper is installed in only one of the hinge mechanisms, and the hinge mechanism on the other side is in a follow-up state. The present invention ensures that the hinge can achieve a uniform buffering effect when closing the door, avoiding the door distortion problem caused by uneven force on the double buffers in the prior art.

[0017] The trigger of the present invention adopts a "Z"-shaped distribution design. Compared with the traditional flat trigger, it increases the contact area with the box door or box body, disperses the force points, significantly enhances the stability of the connection, and reduces the possibility of deformation. This design improves the durability of the hinge and extends the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 , 2 This is the general assembly effect diagram of the utility model.

[0019] Figure 3 This is an exploded view of the first hinge mechanism structure in the utility model.

[0020] Figure 4This is an exploded view of the second hinge mechanism structure in the present utility model.

[0021] Figure 5 It is a schematic diagram of the trigger structure in the utility model. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to the accompanying drawings. A door buffer hinge assembly includes a first hinge mechanism A and a second hinge mechanism B, wherein the first hinge mechanism A and the second hinge mechanism B each include a main body 1 and a trigger 2 hingedly mounted thereon, a mounting slot 11 is provided in the main body 1, a pull arm 3 is mounted in the mounting slot 11, one end of the pull arm 3 is hingedly connected to the trigger 2 through a connecting rod 4, and the other end is connected to a tension spring 5 mounted in the mounting slot 11, and the tension spring 5 generates a tension force through the pull arm 3 and the connecting rod 4 to always pull the trigger 2 to move in the closing direction;

[0023] A locking wheel 41 is slidably mounted in the connecting rod 4. The locking wheel 41 is pushed by a push spring 42 to always move toward the trigger 2. Correspondingly, a concave locking groove 21 is provided on the trigger 2. When the trigger 2 is closed, the locking wheel 41 is snapped into the locking groove 21, locking the trigger 2 in a closed state.

[0024] In the first hinge mechanism A, a damper 6 is also installed in the installation groove 11, and the damper 6 is connected to the pull arm 3. When the trigger 2 is closed, the damper 6 interacts with the pull arm 3 to slow down the closing speed of the trigger 2;

[0025] The trigger 2 includes a support portion 22 hinged to the main body 1, the other end of the support portion 22 extends laterally outward to form a connecting portion 23, and the other end of the connecting portion 23 extends to form a mounting portion 24. The support portion 22, connecting portion 23 and mounting portion 24 are distributed in a "Z" shape.

[0026] In one embodiment, the trigger 2 installed on the first hinge mechanism A and the second hinge mechanism B is arranged in a horizontal mirror image.

[0027] In one embodiment, a connecting plate 25 is provided on the connecting portion 23 and the mounting portion 24 of the trigger 2 , and a mounting hole 26 is provided on the connecting plate 25 .

[0028] In one embodiment, the trigger 2 is formed by bending a metal plate in one piece.

[0029] In one embodiment, the main body 1 is arranged in an open slot shape, and a mounting seat 12 extends from the slot opening to both sides thereof.

[0030] Working principle: The door buffer hinge assembly in this case includes a first hinge mechanism A and a second hinge mechanism B. The two have similar working principles and work together to ensure the smooth opening and closing of the door and the buffering effect when closing:

[0031] The first hinge mechanism A and the second hinge mechanism B each include a main body 1, a trigger 2 hinged to the main body 1, a mounting slot 11 is provided in the main body 1, a pull arm 3 is installed in the mounting slot 11, one end of the pull arm 3 is hinged to the trigger 2 through a connecting rod 4, and the other end is connected to a tension spring 5 installed in the mounting slot 11. During installation, the main body is connected to the box body, and the trigger is connected to the box door. When the box door is opened or closed, the trigger rotates around the hinge point to open or close the box door.

[0032] The tension spring 5 generates a pulling force, and the trigger 2 is always pulled to move in the closing direction through the pulling arm 3 and the connecting rod 4. When the door is closed, the pulling force of the tension spring makes the pulling arm 3 fit tightly with the trigger 2, thereby achieving the closing of the door.

[0033] A locking wheel 41 is installed in the connecting rod 4 in a sliding manner. The locking wheel 41 is pushed by a push spring 42 and always moves toward the trigger 2. The trigger 2 is provided with a concave locking groove 21. When the trigger 2 is closed, the locking wheel 41 is snapped into the locking groove 21, locking the trigger 2 in a closed state, thereby ensuring that the box door will not open automatically when closed, and ensuring the airtightness of the box door after closing to avoid leakage.

[0034] Among them, in the first hinge mechanism A, a damper 6 is also installed in the mounting groove 11, and the damper 6 is connected to the pull arm 3. When the trigger 2 is closed, the damper 6 interacts with the pull arm 3 to slow down the closing speed of the trigger 2, thereby playing a buffering effect and avoiding the door from making impact noise when closing. In the second hinge mechanism B, no buffer is set, but the buffer in the first hinge mechanism is used to achieve buffering under the drive of the door. Therefore, compared with the traditional technology, while achieving the buffering effect of the door, the use of one buffer is reduced, which effectively reduces the production cost and avoids the problem of uneven force and distortion of the door when double buffers are used.

[0035] Furthermore: Compared with the traditional single-piece trigger, the trigger 2 in this case includes a support portion 22 hinged to the main body 1, the other end of the support portion 22 extends laterally outward to form a connecting portion 23, and the other end of the connecting portion 23 extends to form a mounting portion 24. The support portion 22, the connecting portion 23 and the mounting portion 24 are distributed in a "Z" shape. This design not only enhances the stability of the trigger, but also increases the contact area with the box door or the box body, disperses the force points, and reduces the risk of deformation at the connection. The connection stability between the box door or the box body and the trigger is guaranteed. In addition, the trigger 2 on the first hinge mechanism A and the second hinge mechanism B is arranged in a horizontal mirror image, so that the two hinge mechanisms can be evenly stressed during operation, further improving the closing stability of the box door and the symmetry of the overall structure.

[0036] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the scope of protection of the claims created by the present invention.

Claims

1. A door buffer hinge assembly, characterized in that: It comprises a first hinge mechanism (A) and a second hinge mechanism (B), wherein the first hinge mechanism (A) and the second hinge mechanism (B) both comprise a main body (1) and a trigger (2) hingedly mounted thereon, the main body (1) being provided with a mounting groove (11), a pulling arm (3) being mounted in the mounting groove (11), one end of the pulling arm (3) being hingedly mounted to the trigger (2) via a connecting rod (4), and the other end of the pulling arm (3) being connected to a tension spring (5) mounted in the mounting groove (11), the tension spring (5) generating a tension force which, through the pulling arm (3) and the connecting rod (4), always pulls the trigger (2) to move in a closing direction; A locking wheel (41) is slidably mounted in the connecting rod (4) in a forward and backward manner. The locking wheel (41) is pushed by a push spring (42) to always move in the direction of the trigger (2). Correspondingly, a concave locking groove (21) is provided on the trigger (2). When the trigger (2) is closed, the locking wheel (41) is snapped into the locking groove (21), locking the trigger (2) in a closed state. In the first hinge mechanism (A), a damper (6) is also installed in the installation groove (11), and the damper (6) is connected to the pull arm (3). When the trigger (2) is closed, the damper (6) and the pull arm (3) interact with each other to slow down the closing speed of the trigger (2); The trigger (2) comprises a support portion (22) hingedly connected to the main body (1), the other end of the support portion (22) extending laterally outward to form a connecting portion (23), the other end of the connecting portion (23) extending in the form of a mounting portion (24), and the support portion (22), the connecting portion (23) and the mounting portion (24) are arranged in a "Z" shape.

2. The door buffer hinge assembly according to claim 1, characterized in that: The triggers (2) installed on the first hinge mechanism (A) and the second hinge mechanism (B) are arranged in a horizontal mirror image.

3. The door buffer hinge assembly according to claim 1, characterized in that: A connecting plate (25) is provided on the connecting portion (23) and the mounting portion (24) of the trigger (2), and a mounting hole (26) is provided on the connecting plate (25).

4. A door buffer hinge assembly according to any one of claims 1 to 3, characterized in that: The trigger (2) is formed by integrally bending a metal plate.

5. The door buffer hinge assembly according to claim 1, characterized in that: The main body (1) is arranged in the shape of an open slot, and a mounting seat (12) extends from the slot opening to both sides thereof.

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