A hinge with multi-position adjustment function

Abstract

A hinge with multi-level adjustment includes a hinge cup and a hinge arm. The hinge cup and hinge arm are hinged together by an upper connecting rod and a lower connecting rod. The upper connecting rod extends into the hinge cup to form a drive arm. The drive end of the drive arm is away from the hinge point between the upper connecting rod and the hinge cup. When the hinge opens and closes, the upper connecting rod drives the drive arm to swing. A guide block is slidably provided on the outer wall of the hinge cup, and a buffer is provided between the guide block and the hinge cup. A through-hole groove is formed on the side wall of the hinge cup. An adjustment lever is provided on the hinge cup, and the adjustment lever is connected to a locking buckle. Several positioning steps are provided on the guide block, and the locking buckle hooks onto the positioning steps at different positions to limit the travel of the guide block in the direction of the drive rod. The beneficial effect of this utility model is that by setting an adjustment lever, a locking buckle, and a guide block with several positioning steps, this utility model achieves precise control of the working stroke of the buffer.

Description

Technical Field

[0001] This utility model relates to the field of hardware hinge technology, specifically a hinge with multi-level adjustment function. Background Technology

[0002] Hinges are essential hardware components connecting cabinet doors to the cabinet body. As people's demands for quality home life increase, hydraulic hinges with a buffer function (commonly known as damping hinges) have become the mainstream in the market. These hinges utilize a hydraulic buffer to provide resistance during the closing process, allowing the cabinet door to close smoothly and silently, preventing the door from hitting the cabinet body and causing noise or pinching fingers.

[0003] Existing damping hinges typically consist of a hydraulic damper mounted on the hinge cup or hinge arm, which is activated by a linkage mechanism or a dedicated drive component. For example, when the cabinet door is closed to a certain angle (e.g., 60 degrees), the drive component on the hinge begins to contact and compress the damper, generating a damping force.

[0004] However, existing buffer hinges have the following obvious drawbacks in practical use: The timing of damper engagement (intervention angle) cannot be adjusted: the engagement position between the existing drive mechanism and the damper is usually fixed. This means that regardless of the weight or size of the cabinet door, the damper will engage at a fixed angle (e.g., when the door opening angle is 45 degrees). This "one-size-fits-all" design cannot meet diverse usage needs.

[0005] Slow closing speed negatively impacts user experience: For lighter or smaller cabinet doors, if the damper intervenes too early (too early), the door will experience strong damping force at a large opening angle, resulting in an extremely slow closing process, sometimes even stopping midway and requiring manual pushing to close. This not only reduces closing efficiency but also provides a sluggish and unpleasant user experience.

[0006] Lack of adjustable travel: While some hinges on the market can change the damping force (hardness) by adjusting the flow rate of the hydraulic cylinder, very few hinges can adjust the "effective travel" of the damping. In other words, users cannot choose whether the cabinet door should "damp only when it's almost closed" or "start damping very early." Therefore, further improvements are necessary. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a hinge with a simple structure, convenient use, and the ability to flexibly adjust the damper engagement timing and effective stroke according to the door panel weight and user habits, thereby optimizing the closing speed.

[0008] The purpose of this utility model is achieved in the following way: a hinge with multi-level adjustment function, which includes a hinge cup and a hinge arm. The hinge cup and the hinge arm are hinged together by an upper connecting rod and a lower connecting rod. The upper connecting rod and the lower connecting rod swing relative to the hinge point of the hinge arm and the hinge cup to realize the opening and closing of the hinge. The upper connecting rod extends into the hinge cup to form a drive arm. The drive end of the drive arm is away from the hinge point between the upper connecting rod and the hinge cup. When the hinge is opened and closed, the upper connecting rod drives the drive arm to swing. A guide block is slidably provided on the outer side wall of the hinge cup. A buffer is provided between the guide block and the hinge cup. A clearance groove penetrating through the inside and outside is opened on the side wall of the hinge cup. It also includes a drive rod that can move relative to the hinge cup. The inner end of the drive rod extends from the clearance groove into the hinge cup and enters the swing stroke of the drive arm. The outer end of the drive rod abuts against the guide block. When the hinge is closed, the drive arm pushes the guide block to move through the drive rod. The guide block pushes the buffer to move, generating a damping effect when the hinge is closed. The hinge cup is equipped with an adjustment lever, which is connected to a locking buckle. The guide block is equipped with several positioning steps, and the locking buckle hooks onto the positioning steps at different positions to limit the travel of the guide block in the direction of the drive rod.

[0009] Furthermore, the hinge cup is provided with a rotating hole, and the adjusting lever is rotatably installed in the rotating hole.

[0010] Furthermore, the bottom of the adjusting lever is provided with a rotating shaft extending downwards, and the rotating shaft is rotatably installed in the rotating hole.

[0011] Furthermore: the locking buckle is set on the cylindrical surface of the coupling sleeve, the coupling sleeve is coaxially connected to the rotating shaft, and the adjusting lever drives the locking buckle to swing through the rotating shaft and the coupling sleeve.

[0012] Furthermore, the plurality of positioning steps are distributed in a stepped manner along the sliding direction of the guide block.

[0013] Furthermore, the bottom of the adjusting lever is provided with a positioning boss, and correspondingly, the hinge cup is provided with several stop holes. The positioning boss is snapped into one of the stop holes to restrict the swing of the adjusting lever.

[0014] Furthermore, the buffer is a self-resetting compression damping type hydraulic buffer.

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

[0016] 2. This utility model achieves precise control of the working stroke of the buffer by setting an adjustment lever, a locking buckle, and a guide block with several positioning steps, so as to control the timing of the buffer's engagement.

[0017] 3. This invention solves the problem of slow or even stopped closing caused by premature buffer intervention in traditional hydraulic hinges when installed on light or small door panels. Users can select the appropriate buffer setting by adjusting the lever according to the actual weight of the door panel and their personal preferences. For example, using the "late intervention" setting on a light door panel allows the door panel to swing freely for most of its travel, with gentle buffering only at the last moment. This significantly reduces the closing waiting time while ensuring quiet operation and improving the smoothness of use.

[0018] 4. The adjustment mechanism of this utility model is cleverly arranged on the hinge cup, using rotational motion to convert into limit adjustment of the linear sliding component. This structural design is compact and does not occupy too much usable space inside the hinge cup. At the same time, the adjustment lever is set on the surface of the hinge cup, so the user does not need to disassemble the hinge or even use complicated tools; they can simply flick or rotate it to complete the gear switching, making the operation very intuitive and convenient. Attached Figure Description

[0019] Figure 1 , 2 This is a rendering of the final assembly of this utility model.

[0020] Figure 3 In this utility model Figure 1 Enlarged view of the structure of part A.

[0021] Figure 4 , 5 This is an exploded view of the structure of this utility model.

[0022] Figure 6 This is an assembly drawing of the adjusting lever and guide block in this utility model.

[0023] Figure 7 This is an exploded view of the adjusting lever and locking buckle structure in this utility model.

[0024] Figure 8 This is a schematic diagram of the lever structure in this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Hinge cup; 10. Rotating hole; 11. Locking buckle; 12. Coupling sleeve; 13. Stop hole; 14. Clearance groove; 2. Hinge arm; 3. Upper connecting rod; 31. Drive arm; 4. Lower connecting rod; 5. Buffer; 6. Drive rod; 7. Toggle lever; 71. Rotating shaft; 72. Positioning boss; 9. Guide block; 91. Positioning step. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings. A hinge with multi-position adjustment function includes a hinge cup 1 and a hinge arm 2. The hinge cup 1 and the hinge arm 2 are hinged together by an upper connecting rod 3 and a lower connecting rod 4. The upper connecting rod 3 and the lower connecting rod 4 swing relative to the hinge point of the hinge arm 2 and the hinge cup 1 to realize the opening and closing of the hinge. The upper connecting rod 3 extends into the hinge cup 1 to form a drive arm 31. The drive end of the drive arm 31 is away from the hinge point of the upper connecting rod 3 and the hinge cup 1. When the hinge is opened and closed, the upper connecting rod 3 drives the drive arm 31 to swing. A guide block 9 is slidably provided on the outer side wall of the hinge cup 1. A buffer 5 is provided between the guide block 9 and the hinge cup. A through-hole groove 14 is provided on the side wall of the hinge cup 1. It also includes a drive rod 6 that can move relative to the hinge cup 1. The inner end of the drive rod 6 extends from the clearance groove 14 into the hinge cup 1 and enters the swing stroke of the drive arm 31. The outer end of the drive rod 6 abuts against the guide block 9. When the hinge is closed, the drive arm 31 pushes the guide block 9 to move through the drive rod 6. The guide block 9 pushes the buffer 5 to move, generating a damping effect when the hinge is closed. The hinge cup 1 is provided with an adjustment lever 7, which is connected to a locking buckle 11. The guide block 9 is provided with several positioning steps 91. The locking buckle 11 is hooked to the positioning steps 91 at different positions to limit the travel of the guide block 9 in the direction of the drive rod 6.

[0027] In this embodiment: when the hinge is closed, the upper connecting rod 3 drives the drive arm 31 to swing, and the drive arm 31 presses the drive rod 6; the drive rod 6 passes through the clearance groove 14 to transmit the thrust to the guide block 9 outside the hinge cup; the guide block 9 then slides and compresses the buffer 5, thereby generating damping force and achieving a smooth door closing.

[0028] When the hinge opens, the buffer 5, under its self-resetting action, pushes the guide block 9 to slide back to its original position. The adjusting lever 7 is used to change the angle of the locking latch 11. The locking latch 11, as a variable-position stop, determines the final position to which the guide block 9 can retract by blocking different positioning steps 91 on the guide block 9, thus setting the initial starting point of the guide block.

[0029] In this case, the linkage between the internal and external mechanisms is achieved by utilizing the clearance groove 14, and the buffer and adjustment mechanism is cleverly arranged on the side wall of the hinge cup without occupying the internal installation space of the hinge cup. At the same time, the complex damping timing adjustment can be transformed into an intuitive guide block stroke limit, and the structural logic is simple and reliable.

[0030] In one embodiment, the hinge cup 1 has a rotating hole 10, and the adjusting lever 7 is rotatably mounted within this rotating hole 10. The rotating hole 10 provides a fixed geometric reference and rotation fulcrum on the hinge cup body. The adjusting lever 7 rotates around this hole. This ensures that the axis of the adjusting mechanism is stable during operation and does not deviate, thus guaranteeing the adjustment feel.

[0031] In one embodiment, a rotating shaft 71 extends downward from the bottom of the adjusting lever 7, and the rotating shaft 71 is rotatably mounted within the rotating hole 10. The rotating shaft 71 serves as a pivot connecting the external operating element and the internal actuator. It fits within the rotating hole 10, providing guidance and load-bearing function. This integrated or separate shaft-hole fitting structure facilitates large-scale automated assembly production.

[0032] In one embodiment: the locking buckle 11 is disposed on the cylindrical surface of the coupling sleeve 12, which is coaxially connected to the rotating shaft 71. The adjusting lever 7 drives the locking buckle to swing through the rotating shaft 71 and the coupling sleeve 12. When the user moves the adjusting lever 7, the rotating shaft 71 rotates, causing the coupling sleeve 12 fitted on it to rotate synchronously, ultimately causing the locking buckle 11 fixed on the coupling sleeve to deflect at an angle.

[0033] In this embodiment, the locking buckle 11 and the lever 7 can be connected separately via a coupling sleeve, which makes it convenient to replace the locking buckle of different shapes for different types of hinges, and has strong versatility.

[0034] In one embodiment, the plurality of positioning steps 91 are distributed in a stepped manner along the sliding direction of the guide block 9. This structure is the core geometric feature for achieving "multi-position". The steps on the guide block 9 are arranged in a straight line like a staircase, and the distance of each step relative to the locking buckle 11 is different. When the locking buckle 11 rotates to different angles, it will align with different levels. Because the position of each step is different, the position where the guide block is blocked, i.e., the reset endpoint, is also different. Therefore, this structure cleverly converts the "rotational selection" action of the lever into the "linear displacement difference" of the guide block, with very clear mechanical logic, making it less prone to jamming or failure.

[0035] In one embodiment: the bottom of the adjusting lever 7 is provided with a positioning boss 72, and correspondingly, the hinge cup 1 is provided with a plurality of stop holes 13. The positioning boss 72 is snapped into one of the stop holes 13 to restrict the swing of the adjusting lever 7.

[0036] In this embodiment, the slight elastic deformation of the plastic part is utilized. When the adjusting lever is rotated to the correct position, the positioning boss 72 falls into the stop hole 13, generating a resistance torque and locking the current angle. This prevents the adjusting lever from automatically shifting and altering the cushioning effect due to frequent opening and closing vibrations of the hinge. Additionally, it provides a clear "click" feel when shifting gears, enhancing the product's premium feel.

[0037] In one embodiment, the buffer 5 is a self-resetting compression damping hydraulic buffer. This buffer integrates a return spring. After the external force is removed, i.e., when the door is opened, it automatically extends, providing power not only for its own oil suction and reset but also for pushing the guide block 9 back towards the drive rod. This structure eliminates the need for a separate return spring mechanism, reducing costs and the number of parts.

[0038] In summary, the working principle of this utility model can be divided into two parts: the "adjustment and setting stage" and the "opening and closing usage stage". 1. Adjustment and setting stage: When the user needs to adjust the hinge's damping effect, i.e., the closing speed, they manually move the adjusting lever 7 mounted on the hinge cup. The adjusting lever 7 drives the internal locking latch 11 to rotate via the rotating shaft 71.

[0039] Because the positioning steps 91 on the guide block 9 are distributed in a stepped manner along the sliding direction, in the "slow close / early buffer" mode: when the user turns the lever to the corresponding position, the locking latch 11 rotates to avoid the steps in front, allowing the guide block 9 to slide outward a further distance under the thrust of the buffer 5 until it is blocked by the positioning step 91 located further back. At this time, the initial distance between the guide block 9 and the drive lever 6 becomes smaller.

[0040] When set to "fast close / late buffer" mode: the user turns the lever to another position, the locking buckle 11 rotates and blocks the positioning step 91 which is further forward, forcing the guide block 9 to stop resetting earlier. At this time, the initial distance between the guide block 9 and the drive rod 6 increases.

[0041] 2. Opening and closing usage phase: Closing process: When the user closes the cabinet door, the linkage mechanism of the hinge moves, causing the drive arm 31 to push the drive rod 6 into the hinge cup.

[0042] If it is set to "quick close": Due to the large initial gap, the drive lever 6 needs to travel a relatively long distance before contacting the guide block 9. This means that the buffer will only begin to intervene when the cabinet door has turned a large angle and there is still 30° remaining. Therefore, the first half of the closing process is fast and not sluggish.

[0043] If the "slow closing" setting is used: due to the small initial distance, the drive rod 6 will hit the guide block 9 very quickly as soon as it starts to move. This means that the cabinet door will begin to buffer at a large angle, such as when there is 60° remaining, the damping will intervene early, and the closing process will be smooth and slow, preventing heavy door impact.

[0044] After contact, the drive rod 6 continues to push the guide block 9 to slide backward, compressing the buffer 5 to generate hydraulic resistance until the cabinet door is completely closed.

[0045] Opening process: When the user pulls open the cabinet door, the drive rod 6 retracts along with the linkage mechanism. The buffer 5 loses pressure and extends due to its own spring force, pushing the guide block 9 to slide back to its original position. The guide block 9 slides until it is blocked by the pre-set locking latch 11, waiting for the next closing action.

[0046] Therefore, this utility model achieves precise control of the buffer's working stroke by setting an adjustment lever, a locking buckle, and a guide block with several positioning steps. Specifically, the user only needs to rotate the adjustment lever to drive the locking buckle to rotate; during rotation, the locking buckle can selectively engage with the positioning steps at different positions (different levels) on the guide block.

[0047] Because these positioning steps are distributed in a stepped pattern along the sliding direction of the guide block, the locking latch, when engaged with different steps, can limit the extreme positions of the guide block's return to the drive rod direction. This is equivalent to changing the initial "waiting" position of the guide block (and buffer) relative to the drive rod.

[0048] When the locking latch restricts the guide block to stop near the drive rod, the drive rod will contact the guide block earlier during the closing process, and the buffer will engage earlier (buffering starts at a large angle), which is suitable for heavy door panels and prevents impact. When the locking latch restricts the guide block to stop at a position far from the drive rod, the drive rod needs to move a longer distance before contacting the guide block during the closing process. The buffer engages with a delay (buffering only begins at a small angle), which is suitable for lightweight door panels and can effectively improve the closing speed, thereby meeting the needs of different users. Therefore, it can be widely promoted and used.

[0049] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A hinge with multi-position adjustment function, comprising a hinge cup (1) and a hinge arm (2), wherein the hinge cup (1) and the hinge arm (2) are hinged together by an upper connecting rod (3) and a lower connecting rod (4), the upper connecting rod (3) and the lower connecting rod (4) swing relative to the hinge point of the hinge arm (2) and the hinge cup (1) to realize the opening and closing of the hinge, wherein the upper connecting rod (3) extends into the hinge cup (1) to form a drive arm (31), the drive end of the drive arm (31) is away from the hinge point of the upper connecting rod (3) and the hinge cup (1), and when the hinge is opened and closed, the upper connecting rod (3) drives the drive arm (31) to swing, characterized in that: The outer side wall of the hinge cup (1) is slidably provided with a guide block (9), and a buffer (5) is provided between the guide block (9) and the hinge cup. A clearance groove (14) penetrating inside and outside is provided on the side wall of the hinge cup (1). It also includes a drive rod (6) that can move relative to the hinge cup (1). The inner end of the drive rod (6) extends from the clearance groove (14) into the hinge cup (1) and enters the swing stroke of the drive arm (31). The outer end of the drive rod (6) abuts against the guide block (9). When the hinge is closed, the drive arm (31) pushes the guide block (9) to move through the drive rod (6). The guide block (9) pushes the buffer (5) to move, generating a damping effect when the hinge is closed. The hinge cup (1) is provided with an adjustment lever (7), the adjustment lever (7) is connected to a locking buckle (11), the guide block (9) is provided with several positioning steps (91), the locking buckle (11) is hooked to the positioning steps (91) at different positions, and the travel of the guide block (9) in the direction of the drive rod (6) is restricted.

2. A hinge with multi-level adjustment function according to claim 1, characterized in that: The hinge cup (1) is provided with a rotating hole (10), and the adjusting lever (7) is rotatably installed in the rotating hole (10).

3. A hinge with multi-position adjustment function according to claim 2, characterized in that: The bottom of the adjustment lever (7) is provided with a rotating shaft (71), which is rotatably installed in the rotating hole (10).

4. A hinge with multi-position adjustment function according to claim 3, characterized in that: The locking buckle (11) is set on the cylindrical surface of the coupling sleeve (12). The coupling sleeve (12) is coaxially connected with the rotating shaft (71). The adjusting lever (7) drives the locking buckle to swing through the rotating shaft (71) and the coupling sleeve (12).

5. A hinge with multi-position adjustment function according to claim 1, characterized in that: The plurality of positioning steps (91) are distributed in a stepped manner along the sliding direction of the guide block (9).

6. A hinge with multi-position adjustment function according to claim 1, characterized in that: The bottom of the adjusting lever (7) is provided with a positioning boss (72). Correspondingly, the hinge cup (1) is provided with several stop holes (13). The positioning boss (72) is snapped into one of the stop holes (13) to restrict the swing of the adjusting lever (7).

7. A hinge with multi-position adjustment function according to claim 1, characterized in that: The buffer (5) is a self-resetting compression damping type hydraulic buffer.

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