Self-closing positioning hinge

Abstract

The utility model discloses a self-closing positioning hinge and relates to the field of hinges, the hinge comprises a first hinge piece, a second hinge piece and a hinge pin shaft serving as the rotating center of the two hinge pieces, hollow hinge lugs which are matched in a staggered mode are arranged on the opposite edges of the first hinge piece and the second hinge piece, and during matching, the hollow hinge lugs are matched with the first hinge piece and the second hinge piece. The hollow hinge lugs in the first hinge and the second hinge form a hollow shaft position, and the hinge pin shaft is inserted into the hollow shaft position; in order to achieve self-positioning, a low shaft frame with a shaft rod installed at the top is vertically arranged on the front face of the first hinge piece, a high shaft frame opposite to the low shaft frame is oppositely vertically arranged on the front face of the second hinge piece, a shaft rod is also installed at the top of the high shaft frame, and two torsional springs which are arranged in the mirror direction are installed between the two shaft rods. According to the hinge, through the structural design of the butterfly-type symmetrical torsional spring set, the door opening or closing function can be automatically achieved when a door body reaches a specified angle.

Description

TECHNICAL FIELD

[0001] The present application relates to the hinge field, and particularly to a self-closing positioning hinge. BACKGROUND

[0002] In the prior art, hinges are widely used in doors and windows, furniture and various equipment as a common mechanical connecting component, and their main function is to connect parts and realize rotation. However, the traditional hinge can only provide basic rotation function, and lacks automatic positioning or self-closing function. Although this basic design is simple and easy to implement, it cannot meet the more efficient and intelligent needs in actual use. For example, doors and windows or cabinet doors often need to add additional spring type auxiliary mechanisms to realize partial automatic door closing or opening function in daily use. However, such auxiliary mechanisms can only realize single door closing or opening assistance in function, and cannot meet both needs. In addition, due to the complex internal structure, the production process requirement is high, and the manufacturing cost is also relatively increased.

[0003] In order to solve this problem, some improved technologies in the prior art try to introduce motors or electromagnetic devices to realize automatic opening and closing of the door body. These designs can provide higher automation degree in function, but due to their complex structure, high production cost, and great dependence on energy, they have great limitations in actual application. Especially in the environment without stable power supply, such technology may not work at all. In addition, the complex electrical structure and control system also significantly increase the maintenance difficulty and failure rate, reduce the user experience and service life of the product.

[0004] At the same time, the traditional spring type auxiliary mechanism mainly relies on elastic deformation to provide driving force in working principle, but its torque output is unidirectional, and it is difficult to realize multifunctional operation of automatic opening and closing. Although such mechanism has low cost compared with motor and electromagnetic design, due to the fatigue effect of spring in long-term use, the stability and continuity of torque output cannot be guaranteed, and problems such as jamming and spring force attenuation may occur in actual use. In addition, these designs need complex structure cooperation and high-precision assembly process in the manufacturing process, which further increases the production cost and limits its promotion in mass industrial production.

[0005] It is particularly important to develop a new self-closing positioning hinge. CONTENT OF THE INVENTION

[0006] The purpose of the present application is to at least overcome one deficiency in the prior art, and provide a self-closing positioning hinge. The hinge can automatically realize door opening or closing function when the door body reaches the specified angle through the design of butterfly type symmetrical torsional spring group structure, without relying on traditional complex motors or electromagnetic devices, thereby fundamentally reducing the structural complexity and production cost.

[0007] To achieve the above object, the application discloses a self-positioning hinge, which comprises a first hinge piece, a second hinge piece and a hinge pin shaft as the rotating center of the two hinge pieces.

[0008] Further, the high shaft frame is provided with a clamping groove matched with the low shaft frame, and the low shaft frame front end is clamped into the clamping groove when the hinge is folded, thereby forming a clamping structure for clamping when the hinge is folded.

[0009] Further, the torsion spring has a spiral section and a rod section horizontally tangent to the spiral section from both ends of the spiral section in the spring spiral direction, and the rod section and the central axis of the torsion spring form a certain angle, so that the entire torsion spring has a V-shaped structure; the rod section is connected and matched with the corresponding shaft rod.

[0010] Further, the first hinge piece and the second hinge piece are provided with a plurality of mounting holes for mounting the hinge.

[0011] Further, the torsion spring is provided with a protective sleeve to prevent clamping of objects.

[0012] Further, the opposite matching surfaces of the first hinge piece and the second hinge piece are provided with rubber blocks for shock absorption when the hinge is folded.

[0013] To achieve the rotation of the torsion spring relative to the high shaft frame and the low shaft frame, in some embodiments, the two shaft rods are rotatably mounted on the low shaft frame and the high shaft frame, respectively, and the rod section of the torsion spring is inserted and fixed on the shaft rod, which is constrained and fixed by the shaft rod.

[0014] In other embodiments, the two shaft rods are fixedly mounted on the high shaft frame and the low shaft frame, respectively, and the front end of the rod section of the torsion spring is wound on the shaft rod, so that the rod section can rotate relative to the shaft rod. In addition, the two shaft rods are provided with a spacing spring for spacing the rod sections of the two torsion springs.

[0015] Compared with the prior art, the application has at least one of the following beneficial effects:

[0016] 1. High efficiency and practicality: Through the butterfly symmetrical torsion spring group structure, the door body is automatically positioned and switched at a specific angle, without relying on complex motors or electromagnetic devices. This design not only meets the automation needs, but also simplifies the structure, reduces maintenance costs, and improves practicality.

[0017] 2. Reduce manufacturing costs: By using mechanical torsion spring structure instead of traditional electric devices, it not only significantly reduces the dependence on complex electrical control system, but also simplifies the production process and reduces production costs. This design is especially suitable for industrial scenarios that require mass production.

[0018] 3. Improve service life: To solve the problem of fatigue effect in traditional spring mechanism, the utility model reasonably designs the torsion spring structure, which can maintain the stability of torque output in long-term use, effectively improving the durability of the product.

[0019] The above listed benefits are not exhaustive of all advantages. Other potential benefits and detailed technical implementations will be further disclosed in the embodiments or other description sections of this application. BRIEF DESCRIPTION OF DRAWINGS

[0020] After reading the specific embodiments below in conjunction with the accompanying drawings, the aspects of the present disclosure will be better understood, and the positions, sizes, and ranges of the structures shown in the drawings, etc. are sometimes not representative of the actual positions, sizes, and ranges, etc. In the drawings:

[0021] Figure 1 is a structural schematic diagram of an embodiment of the present application.

[0022] Figure 2 is a structural schematic diagram of an embodiment of the present application from another perspective.

[0023] Figure 3 is a structural schematic diagram of an embodiment of the present application from another perspective.

[0024] Figure 4 is a structural schematic diagram of another embodiment of the present application.

[0025] Figure 5 is a structural schematic diagram of another embodiment of the present application from another perspective. DETAILED DESCRIPTION

[0026] The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure more complete and to fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

[0027] It should be understood that the same reference numerals denote the same elements in all the accompanying drawings. For clarity, the dimensions of certain features may be modified in the drawings.

[0028] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this disclosure. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. For the sake of brevity and / or clarity, techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail; however, where appropriate, such techniques, methods, and apparatus should be considered part of this specification.

[0029] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items. Example

[0030] See attached document Figures 1-3 The following is an embodiment of a self-closing positioning hinge, detailing its structural composition, working principle, connection relationships between components, and operating steps. To better understand the invention, its specific implementation is described in detail below. This self-closing positioning hinge includes a first hinge piece 1, a second hinge piece 2, and a hinge pin 4 serving as the rotation center of the two hinge pieces. It should be noted that the first hinge piece 1 and the second hinge piece 2 have staggered hollow hinge ears 3 on their opposite edges. In use, the two hinge pieces interlock through the staggered hinge ears 3 to form a through hollow shaft, into which the hinge pin 4 is inserted, thus forming a stable rotational connection, allowing the two hinges to rotate relative to each other. This structure enables the invention to achieve a stable and reliable rotational effect.

[0031] In order to realize the self-closing positioning function, the front surface of the first hinge leaf 1 is provided with a low shaft support 5, and the top of the low shaft support 5 is provided with a shaft rod 7. On the contrary, the front surface of the second hinge leaf 2 is provided with a high shaft support 6, and the top of the high shaft support 6 is also provided with a shaft rod 7. It should be particularly pointed out that the two shaft supports 5 and 6 and the shaft rods 7 at the top of the shaft supports 5 and 6 are oppositely arranged in space, and a torsion spring 8 is arranged between the two shaft rods 7. The torsion spring 8 is fixed by the shaft rods 7 to form a rotatable butterfly structure. Through the butterfly structure, the automatic return function of the hinge is realized by using the elastic properties of the torsion spring 8. When the hinge is opened to a certain angle, the elastic force of the torsion spring 8 drives the two hinge leaves 1 and 2 to return, thereby realizing the effect of automatic closing and positioning.

[0032] It can be understood that the design of the butterfly structure is one of the cores of the embodiment. Through the two mirror image torsion springs 8, the torsion springs 8 can rotate relative to the two shaft rods 7, thereby providing support thrust for the first hinge leaf 1 and the second hinge leaf 2. When the first hinge leaf 1 and the second hinge leaf 2 rotate around the hinge pin shaft 4 and are combined to a certain angle, the torsion spring 8 will generate a thrust force due to compression. The thrust force acts between the first hinge leaf 1 and the second hinge leaf 2, urging them to further move in the closing direction, and finally realizing the automatic closing of the door leaf. This structure can accumulate elastic force during opening and release energy when the hinge approaches closing, thereby automatically pushing the two hinge leaves to combine, realizing self-closing positioning.

[0033] Further, in order to realize a more stable and precise limiting and fixing design, the high shaft support 6 is provided with a clamping groove 601 on the side opposite to the low shaft support 5. The shape and size of the clamping groove 601 are accurately designed to perfectly fit the top end of the low shaft support 5, so that it can realize close engagement during cooperation. When the hinge is in a folded state, the front end part (i.e. the clamping tongue part) of the low shaft support 5 naturally inserts into the clamping groove 601 to form a firm clamping structure.

[0034] The design of this clamping structure is based on the principle of mechanical stability. Through the clamping and limiting action of the clamping groove 601 on the clamping tongue part of the low shaft support 5, the loosening or misalignment caused by external force or vibration is avoided. Specifically, after the clamping tongue of the low shaft support 5 is inserted into the clamping groove 601 of the high shaft support 6, the contact area of the two components on the joint surface is increased, thereby increasing the friction force, and the multidirectional support of the inner wall of the clamping groove 601 to the clamping tongue further enhances the stability of the overall structure.

[0035] In addition, this structure also has the characteristics of convenient assembly and disassembly. In actual use, the user only needs to complete the alignment and clamping of the clamping tongue and the clamping groove through simple rotating or folding actions, avoiding complex operation steps, and at the same time ensuring precise docking and firm fixing during operation.

[0036] Further, the torsion spring 8 has a specific structural design, including a spiral segment 801 and two rod segments 802 extending in the spiral direction. The rod segments 802 form an included angle with the central axis of the torsion spring 8, making the entire torsion spring 8 exhibit a V-shaped structure. In actual assembly, the rod segments 802 are connected to the corresponding shafts 7, achieving fixed connection through winding or direct insertion, etc. It should be understood that, in order to ensure the stability and reliability of the torsion spring 8, the connection between the rod segments 802 and the shafts 7 can be fixed or rotatable relative to the shafts 7, depending on the use requirements, and the specific implementation can be adjusted according to the actual situation.

[0037] In the preferred embodiment, a protective sleeve is provided on the outside of the torsion spring 8 to prevent the user's fingers or other objects from being pinched, thereby improving the safety of the device. In addition, rubber blocks are also provided on the opposite mating surfaces of the first and second hinge leaves 1 and 2. These rubber blocks have a shock-absorbing effect, which can reduce the impact when the hinge is closed and avoid noise or vibration caused by the collision of the hinge leaves, thereby improving the overall use comfort. It should be understood by those skilled in the art that the provision of the above-mentioned rubber blocks helps to improve the user experience of the product.

[0038] Further, the hinge leaves 1 and 2 are installed through the installation holes provided thereon. The positions and number of these installation holes are optimized to ensure that the hinge can be firmly fixed on the door frame or door leaf, thereby ensuring the load-bearing capacity and reliability of the hinge in actual use. Through the above design, the precise fit between the hinge leaves 1 and 2 and the elastic reset function of the torsion spring 8 achieve the automatic closing and positioning function of the door leaf, which is particularly important in some special application scenarios, such as in fireproof doors or room doors that need to be automatically closed, which can significantly improve safety and convenience.

[0039] In the specific implementation process, the installation method of the torsion spring 8 can be adjusted according to the use requirements. For example, in some embodiments, the two shafts 7 are rotatably installed on the low and high shaft supports 5 and 6, and the rod segments 802 of the torsion spring 8 are inserted and fixed on the shafts 7, so that the torsion spring 8 can rotate relative to the shaft supports 5 and 6, thereby providing a smooth reset function.

[0040] As another installation method of the torsion spring 8, in order to achieve more flexible elastic support effect and optimize the assembly structure of the components, reference is made to the drawings Figure 4 and 5 In this design, the two shafts 7 are fixedly installed on the corresponding positions of the high and low shaft supports 6 and 5, respectively. This layout ensures that the high and low shaft supports 6 and 5 can achieve smooth relative movement under the action of the torsion spring, while providing the necessary support basis for the torsion spring 8.

[0041] Specifically, the front end portion of the rod segment 802 of the torsion spring 8 is fixed on the shaft 7 by winding. This winding design enables the rod segment 802 of the torsion spring 8 to rotate freely relative to the shaft 7, thereby ensuring the elastic response of the assembly under force. The winding connection method is not only simple and reliable, but also ensures that the elastic force borne by the torsion spring in the working state is fully released, thereby maintaining the stability and durability of the assembly.

[0042] In order to further improve the performance of the torsion spring assembly and prevent the mutual interference or misplacement of the two rod segments 802 of the torsion spring 8 on the shaft 7, a spacer spring 9 is designed to be sleeved outside the two shafts 7.

[0043] It should be understood that, in order to ensure that the butterfly-shaped structure of the two torsion springs 8 can maintain the designed geometric shape and meet the mechanical requirements in the working state, the spacer spring 9 is specially designed to be sleeved on the two shafts 7, which plays a key role in isolation and positioning. Specifically, these spacer springs 9 not only physically isolate the two torsion springs 8, but also support and limit the rod segments 802 of the torsion springs 8, ensuring that the two torsion springs 8 can maintain the butterfly-shaped arrangement during installation and operation.

[0044] In this design, the butterfly-shaped structure is the core of the optimization of mechanical properties, mainly through precise geometric distribution and symmetry to achieve uniform transmission of elastic force. The spacer spring 9 adjusts the distance between the two torsion springs 8, avoiding deformation deviation caused by direct contact or interference between the rod segments 802, thereby ensuring the stability of the butterfly-shaped structure. This stability is crucial for the torsion spring to play its designed role under force conditions, and can avoid the decline of mechanical properties due to structural deformation.

[0045] In addition, the elastic properties of the spacer spring 9 can also absorb and buffer the excess vibration or impact force generated by the movement of the assembly to a certain extent, thereby further reducing the influence of external force on the butterfly-shaped structure of the two torsion springs. This dual-function design, i.e. isolation and buffering, not only meets the mechanical requirements in operation, but also prolongs the service life of the assembly and improves the reliability of the structure.

[0046] In summary, the design of the spacer spring 9 not only solves the problem of physical interference of the two torsion springs 8, but also optimizes the spatial distribution and mechanical conditions to ensure that the butterfly-shaped structure can accurately perform its function in dynamic operation and meet the needs of the overall mechanical design, providing a guarantee for the efficient operation of the device.

[0047] It should be understood that the above different embodiments provide more application possibilities for the present application.

[0048] To sum up, through the above design, the self-closing positioning hinge in the embodiment can not only realize automatic closing and positioning of the door leaf, but also reduce impact noise during closing through the rubber block, significantly improving the overall use experience. At the same time, the ingenious cooperation between the torsional spring 8 and the shaft supports 5 and 6 realizes flexible adjustment in different installation modes and use scenarios, fully meeting the needs of different users. The above embodiments of the present application have better achieved the purpose of the invention, but those skilled in the art can make various modifications to the details without departing from the spirit and scope of the present application.

[0049] Although exemplary embodiments of the present disclosure have been described, it will be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the protection scope of the present disclosure defined by the claims. The present disclosure is defined by the appended claims, and equivalents of these claims are also included.

Claims

1. A self-closing positioning hinge, characterized in that, The hinge comprises a first hinge piece, a second hinge piece and a hinge pin shaft as the rotating center of the two hinge pieces, wherein the first hinge and the second hinge are provided with staggered hollow hinge ears on the opposite edges, when matched, the hollow hinge ears in the first hinge and the second hinge form a hollow shaft position, and the hinge pin shaft is inserted into the hollow shaft position; in order to realize self-positioning, a low shaft support with a shaft rod installed on the top is vertically arranged on the front surface of the first hinge piece, and a high shaft support opposite to the low shaft support is vertically arranged on the front surface of the second hinge piece, and a shaft rod is also installed on the top of the high shaft support, and two torsional springs are installed between the two shaft rods in mirror arrangement; the connection position of the torsional springs and the two shaft rods can rotate relative to the high shaft support and the low shaft support, so that the two torsional springs form a butterfly structure between the two shaft rods, and the butterfly structure is used to realize self-closing positioning.

2. A self-closing hinge according to claim 1, wherein: A clamping groove is formed on the high shaft support and matched with the low shaft support, when the hinge is folded, the front end of the low shaft support is clamped into the clamping groove, thereby forming a clamping structure used for clamping when the hinge is folded.

3. A self-closing hinge according to claim 1, wherein: The torsional spring has a spiral section and a rod section formed by extending horizontally from both ends of the spiral section along the spring spiral direction, the rod section and the center axis of the torsional spring form a certain included angle, so that the entire torsional spring presents a V-shaped structure; the rod section is connected and matched with the corresponding shaft rod.

4. A self-closing hinge according to claim 1, wherein: A plurality of installation holes for hinge installation are arranged on the first hinge piece and the second hinge piece.

5. A self-closing hinge according to claim 1, wherein: The torsional spring is sleeved with a protective sleeve to prevent clamping articles.

6. A self-closing hinge according to claim 1, wherein: Rubber blocks for absorbing shock when the hinge is used are arranged on the opposite matching surfaces of the first hinge piece and the second hinge piece.

7. A self-closing hinge according to claim 1, wherein: The two shaft rods are rotatably installed on the low shaft support and the high shaft support, and the rod sections of the torsional springs are inserted into and fixed on the shaft rods and are constrained and fixed by the shaft rods.

8. A self-closing hinge as defined in claim 1, wherein: The two shaft rods are fixedly installed on the high shaft support and the low shaft support, the front end of the rod section of the torsional spring is wound on the shaft rod, so that the rod section can rotate relative to the shaft rod, and in addition, the two shaft rods are sleeved with a spacing spring for spacing the rod sections of the two torsional springs.

Images