Hardware hinge with rear-mounted spring

Abstract

A spring rear-mounted hardware hinge comprises a hinge arm, and an upper connecting rod and a lower connecting rod are hinged to the hinge arm. The other end of the upper connecting rod and the other end of the lower connecting rod are hinged to the hinge cup, the hinge arm covers the bottom plate, a guide groove is formed in the bottom plate or the hinge arm, and the reset sliding block is installed in the guide groove in a sliding mode. The tail portion of the lower connecting rod extends towards the guide groove to form a driving arm, and when the hinge is opened and closed, the driving arm pushes the reset sliding block to slide back and forth in the guide groove. The utility model has the beneficial effects that the guide groove and the reset sliding block are designed on the hinge arm, and the cooperation of the driving arm and the push spring is matched, so that the back-loading structure of the reset spring is realized. Compared with the design that the reset spring needs to be installed in the middle step in the prior art, the installation of the reset spring is arranged in the follow-up link, the overall installation procedure is simplified, and installation convenience and efficiency are remarkably improved.

Description

Technical Field

[0001] This utility model relates to a hinge, specifically a spring-loaded rear-mounted hardware hinge. Background Technology

[0002] Currently, in the field of furniture hardware technology, hinges are a widely used connecting component for cabinet doors and cupboard doors, achieving smooth opening and closing and durability through their structural characteristics. To improve the functionality and lifespan of hinges, many modern hinge designs incorporate return springs and buffer structures, enabling the hinge to self-reset during opening and closing while effectively reducing impact noise when the cabinet door closes. However, some significant shortcomings still exist in the current hinge installation process, mainly in the following aspects:

[0003] 1. High installation complexity of return springs: In existing hinge designs, return springs typically need to be installed in the middle of the hinge process. After installing the return spring, other components such as guide sliders and dampers need to be installed, making the overall installation process cumbersome and time-consuming. Furthermore, the return spring needs to be pre-compressed during installation to ensure sufficient elasticity, but the pre-compressed spring itself is in a high-elasticity state, requiring high precision during installation.

[0004] 2. Incomplete restriction of the return spring's movement space: In existing designs, the installation of the return spring typically relies on simple limiting devices or component locking, resulting in its movement space not being fully restricted. If vibration or misoperation occurs during the installation of subsequent components, the return spring may pop out due to loss of restraint. Due to the high elasticity of the return spring, this situation can easily cause accidental injury to the operator, posing a significant safety hazard.

[0005] 3. Poor component coordination affects overall installation efficiency: In existing technologies, the cooperation relationship between the return spring and other components, such as the buffer and drive arm, is often not clear. Especially when the return spring is preloaded, subsequent components, such as sliders or buffer devices, need to be installed or fixed on the spring. Slight carelessness may cause the spring to pop out or the components to detach, making the installation operation difficult and easily affecting the overall installation efficiency.

[0006] 4. Insufficient stability and durability of the return spring: In existing hinge designs, the installation position of the return spring is usually not able to form a completely stable structural combination with other components. This can lead to problems such as loosening, displacement or wear of the return spring after long-term operation, which not only reduces the working performance of the hinge, but also affects its service life.

[0007] In summary, the existing technology for installing return springs is complex, poses significant safety hazards during operation, exhibits poor coordination between components, and suffers from low installation efficiency, which can easily affect the overall performance and reliability of the hinge. Therefore, further improvements are necessary. Utility Model Content

[0008] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a spring-loaded hardware hinge that is simple in structure, easy to use, simplifies the installation of the reset spring, improves installation efficiency, and effectively avoids the risk of the spring popping out during installation through structural design, thereby improving assembly safety and service life.

[0009] The purpose of this utility model is achieved in the following way: a spring-loaded rear-mounted hardware hinge, which includes a hinge arm, on which an upper connecting rod and a lower connecting rod are hingedly mounted;

[0010] The other ends of the upper and lower connecting rods are hinged to the hinge cup. The upper and lower connecting rods rotate relative to the hinge arm and the hinge cup to realize the opening and closing of the hinge. The characteristic feature is that:

[0011] The hinge arm covers the base plate, and a guide groove is provided in the base plate or the hinge arm, and the reset slider is slidably installed in the guide groove;

[0012] The lower connecting rod has a drive arm extending from its tail end toward the guide groove. When the hinge opens and closes, the drive arm pushes the reset slider to slide back and forth in the guide groove.

[0013] A buffer is also installed in the guide groove, and the buffer is connected to the drive arm; a push spring is installed at the tail of the reset slider, one end of the push spring presses against the reset slider, and the other end presses against the spring pressure plate. The push spring pushes the reset slider to move towards the hinge arm.

[0014] Furthermore, the bottom of the hinge arm is provided with an inner sliding groove, which is connected with the guide groove to form a limiting area, and the reset slider slides within this limiting area.

[0015] Furthermore: the reset slider has a hollow interior forming a receiving area, and the buffer is installed within this receiving area.

[0016] Furthermore: the buffer is covered with a guide sleeve, which is fixed in the receiving area, and one end of the buffer extending out of the guide sleeve is connected to the reset slider.

[0017] Furthermore: the spring pressure plate includes a fixed plate and a baffle, the fixed plate and the baffle are arranged in an "L" shape, the fixed plate covers the guide groove, and the baffle presses against one end of the push spring.

[0018] Furthermore, the fixing plate has a locking hole, and the rivet passes through the hinge arm and connects to the locking hole to fix the spring pressure plate.

[0019] The beneficial effects of this utility model are: 1. Simple structure, low production cost, and improved market competitiveness.

[0020] 2. This utility model achieves a post-installation structure for the return spring by designing a guide groove and a return slider on the hinge arm, in conjunction with the cooperation of the drive arm and the push spring. Compared with the prior art, which requires the return spring to be installed in an intermediate step, this utility model arranges the installation of the return spring in a subsequent stage, simplifying the overall installation process and significantly improving the convenience and efficiency of installation.

[0021] 3. This utility model uses a spring pressure plate to fix one end of the push spring and utilizes a guide groove and slider to form a restricted movement space, thereby effectively avoiding the risk of the return spring popping out due to vibration or misoperation. This limiting design not only improves the safety of installation and operation but also ensures the stability of the spring during operation.

[0022] 4. The reset slider of this invention slides within the guide groove, and through the cooperation of the drive arm and the push spring, achieves the self-resetting function of the hinge. Furthermore, the internal accommodating area of ​​the reset slider can accommodate a buffer, which is connected to the reset slider via a guide sleeve, forming a compact component assembly. This design ensures good cooperation between the reset spring, buffer, and drive arm, thereby improving the overall operating performance and reliability of the hinge. Attached Figure Description

[0023] Figure 1 , 2 This is the structural assembly drawing of this utility model.

[0024] Figure 3 This is an exploded view of the structure of this utility model.

[0025] Figure 4 This is a cross-sectional view of the structure of this utility model.

[0026] Figure 5 This is an exploded view of the hidden hinge arm and the rear structure of the base plate of this utility model. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings. A spring-loaded rear-mounted hardware hinge includes a hinge arm 1, on which an upper connecting rod 2 and a lower connecting rod 3 are hingedly mounted;

[0028] The other ends of the upper connecting rod 2 and the lower connecting rod 3 are hinged to the hinge cup 4. The upper connecting rod 2 and the lower connecting rod 3 rotate relative to the hinge arm 1 and the hinge cup 4 to realize the opening and closing of the hinge. The feature is that:

[0029] The hinge arm 1 covers the base plate 5, and a guide groove 51 is provided in the base plate 5 or the hinge arm 1. The reset slider 6 is slidably installed in the guide groove 51.

[0030] The lower connecting rod 3 has a drive arm 31 extending from its tail toward the guide groove 51. When the hinge is open or closed, the drive arm 31 pushes the reset slider 6 to slide back and forth in the guide groove 51.

[0031] The guide groove 51 is also equipped with a buffer 7, which is connected to the drive arm 31; the tail of the reset slider 6 is equipped with a push spring 8, one end of the push spring 8 presses against the reset slider 6, and the other end presses against the spring pressure plate 9. The push spring 8 pushes the reset slider 6 to move towards the hinge arm 1.

[0032] In one embodiment: the tail of the hinge arm 1 is provided with a mounting slot 11, through which the spring pressure plate 9 is installed into the guide groove 51.

[0033] In one embodiment: the bottom of the hinge arm 1 is provided with an inner sliding groove 12, which is connected with the guide groove 51 to form a limiting area, and the reset slider 6 slides within the limiting area.

[0034] In one embodiment: the reset slider 6 has a hollow interior forming a receiving area 61, and the buffer 7 is installed in the receiving area 61.

[0035] In one embodiment: the buffer 7 is covered with a guide sleeve 71, the guide sleeve 71 is fixed in the receiving area 61, and one end of the buffer 7 extending out of the guide sleeve 71 is connected to the reset slider 6.

[0036] In one embodiment: the spring pressure plate 9 includes a fixed plate 91 and a baffle 92, which are arranged in an "L" shape. The fixed plate 91 covers the guide groove 51, and the baffle 92 presses against one end of the push spring 8.

[0037] In one embodiment: the fixing plate 91 has a locking hole 93, and the rivet 94 passes through the hinge arm 1 and connects to the locking hole 93 to fix the spring pressure plate 9.

[0038] Working Principle: The hinge of this invention consists of a hinge arm, an upper connecting rod, a lower connecting rod, and a hinge cup. During use, the hinge arm rotates relative to the hinge cup through its hinge connection with the upper and lower connecting rods, thereby opening and closing the cabinet door. When the cabinet door is opened, the upper and lower connecting rods rotate around the hinge point of the hinge arm and hinge cup, causing the entire hinge to unfold; when the cabinet door is closed, the upper and lower connecting rods, under the action of the return spring, cause the hinge to return to its initial position, thus closing the cabinet door.

[0039] The reset function is one of the core innovations of this utility model, which is achieved through the coordinated action of components such as the drive arm, reset slider, push spring, and spring pressure plate.

[0040] Specifically, when the hinge is open, the drive arm pushes the reset slider to slide in the guide groove along the direction of the guide groove, while compressing the push spring to put the push spring in a pre-compressed state.

[0041] When the hinge is closed, the push spring releases its elastic force, pushing the reset slider back to its initial position. At the same time, the force is transmitted to the lower linkage through the drive arm, causing the hinge to return to its initial closed state.

[0042] This design ensures that the hinges automatically return to their original position during use without requiring additional external force, thus improving ease of use. At the same time, the returning force also maintains the airtightness of the cabinet door when closed.

[0043] To further optimize the closing performance of the cabinet door, this invention incorporates a receiving area inside the reset slider, and a buffer is installed within this area. One end of the buffer is connected to the reset slider, and the other end is fixed by a guide sleeve.

[0044] As the cabinet door approaches the closed position, the movement of the drive arm acts on the buffer via the reset slider. The buffer absorbs some of the kinetic energy, providing a damping effect and reducing the impact force of the closing door. The buffer's design ensures that no impact noise is produced when the cabinet door closes, while also reducing component wear and extending the hinge's lifespan.

[0045] Meanwhile, by integrating the buffer into the reset slider, this invention effectively avoids the space waste and installation complexity that might result from separate buffer installation, achieving an organic combination of structural compactness and functionality. Furthermore, this invention uses the guide groove and inner sliding groove on the hinge arm to form a limiting zone, strictly limiting the movement range of the reset slider. During hinge operation, the reset slider always slides within the limiting zone, preventing functional issues caused by spring or slider loosening.

[0046] In addition, the spring pressure plate is installed into the guide groove through the mounting slot at the tail of the hinge arm and fixed by the locking hole and rivets, thereby ensuring the stability of the push spring during operation.

[0047] Therefore, through the multiple limiting structures of the reset slider, guide groove and spring pressure plate, this utility model effectively avoids the displacement or popping of the reset spring during the working process, and improves the stability of the overall assembly structure.

[0048] One key point to note is that in this case, the push spring is installed into the guide groove 51 through the mounting slot 11 at the tail of the hinge arm 1 after the hinge body is installed. At this point, because the front end of the guide groove forms limiting zones to the left, right, up, and down, with only the tail end being open, the push spring can be limited in multiple directions after installation. The user only needs to insert the spring pressure plate into the guide groove and connect it to the locking hole 93 through the hinge arm 1 with the rivet 94 to fix the spring pressure plate 9. Through the post-installation design, the return spring can be installed in the last step, greatly simplifying the installation process and avoiding the spring popping problem caused by improper operation during the traditional spring pre-compression process.

[0049] Meanwhile, the rear-mounted design significantly simplifies the installation process, reduces safety hazards caused by spring preload during installation, and improves installation efficiency and safety.

[0050] In summary, this utility model, through the cooperation of the hinge arm, return slider, push spring, drive arm, buffer, and spring pressure plate, constitutes a compact and fully functional spring-loaded rear-mounted hardware hinge. Its working principle not only solves the problems of complex installation and poor safety of return springs in existing technologies, but also significantly improves the hinge's installation efficiency, operational stability, and service life. Furthermore, the buffer function enhances the comfort and durability of cabinet door closing, thus making it widely applicable.

[0051] 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 spring rear-mounted hardware hinge, comprising a hinge arm (1) on which an upper connecting rod (2) and a lower connecting rod (3) are hingedly mounted; the other ends of the upper connecting rod (2) and the lower connecting rod (3) are hingedly connected with a hinge cup (4), and the upper connecting rod (2) and the lower connecting rod (3) rotate relative to the hinge arm (1) and the hinge cup (4) to realize the opening and closing of the hinge, characterized in that: the hinge arm (1) is covered on a bottom plate (5), a guide groove (51) is arranged in the bottom plate (5) or the hinge arm (1), and a reset sliding block (6) is slidingly arranged in the guide groove (51); a driving arm (31) extends from the tail of the lower connecting rod (3) to the direction of the guide groove (51), and the driving arm (31) pushes the reset sliding block (6) to slide forward and backward in the guide groove (51) when the hinge is opened and closed; a buffer (7) is further arranged in the guide groove (51), and the buffer (7) is connected with the driving arm (31); a push spring (8) is arranged at the tail of the reset sliding block (6), one end of the push spring (8) is pressed on the reset sliding block (6), and the other end of the push spring (8) is pressed on a spring pressing plate (9), and the push spring (8) always pushes the reset sliding block (6) to move in the direction of the hinge arm (1). A fitting groove (11) is arranged at the tail of the hinge arm (1), and the spring pressing plate (9) is arranged in the guide groove (51) through the fitting groove (11). An inner sliding groove (12) is arranged at the bottom of the hinge arm (1), the inner sliding groove (12) and the guide groove (51) are abutted to form a limiting area, and the reset sliding block (6) slides in the limiting area. The reset sliding block (6) is hollow to form a containing area (61), and the buffer (7) is arranged in the containing area (61). A guide sleeve (71) is arranged on the buffer (7), the guide sleeve (71) is fixed in the containing area (61), and one end of the buffer (7) extending out of the guide sleeve (71) is connected with the reset sliding block (6).

2. The spring-loaded hardware hinge of claim 1, wherein: The spring pressing plate (9) comprises a fixed plate (91) and a baffle (92), the fixed plate (91) and the baffle (92) are arranged in an "L" shape, the fixed plate (91) is covered in the guide groove (51), and the baffle (92) presses one end of the push spring (8).

3. The spring-loaded hardware hinge of claim 1, wherein: Locking holes (93) are arranged on the fixed plate (91), rivets (94) pass through the hinge arm (1) and are connected with the locking holes (93) to fix the spring pressing plate (9).

4. The spring-loaded hardware hinge of claim 3, wherein: ​ 5. A spring-loaded hardware hinge of claim 4, wherein: ​ 6. The spring-loaded hardware hinge of claim 1, wherein: ​ 7. A spring-loaded hardware hinge of claim 6, wherein: ​

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