A self-locking type three-dimensional metal node connecting mechanism

Abstract

This utility model discloses a self-locking three-dimensional metal node connection mechanism, relating to the field of structural engineering, including a connecting rod, a fixing rod, and a connecting sphere. A self-locking block is provided inside the connecting sphere, and a second spring is movably installed between the self-locking block and the connecting sphere. A fixing rod is movably installed around the connecting sphere, and a locking block is installed on the inner side of several fixing rods close to each other. A connecting rod is movably installed on the outer side of several fixing rods, and a first spring is movably installed between the locking block and the connecting block. A rectangular groove is provided inside the connecting sphere surrounding an annular groove. This utility model uses the connecting sphere as its core, achieving rapid assembly through a double self-locking structure, eliminating the need for complex tools, shortening time, facilitating secondary confirmation of the connection, and improving accuracy. Through the three-dimensional spherical structure and groove design, multi-directional connection is achieved, adapting to metal structures with different cross-sections, broadening the applicable scenarios, and reducing usage costs.

Description

Technical Field

[0001] This utility model belongs to the field of structural engineering, specifically a self-locking three-dimensional metal node connection mechanism. Background Technology

[0002] In the field of structural engineering, metal node connection mechanisms are the core components for achieving stable connection of various metal components. They are widely used in building frame construction, mechanical equipment assembly, bridge structure construction and other scenarios. Their core function is to integrate dispersed metal rods, frames and other structures through nodes to form an overall structure with uniform stress and strong stability. Three-dimensional metal node connection mechanisms, with their ability to connect multiple components in three-dimensional space, have become a key device for meeting the assembly needs of complex three-dimensional structures.

[0003] Currently, most existing metal node connection mechanisms only have a single connection structure, which makes it difficult for workers to connect the connection structure to the main body of the connection mechanism and the metal structure to be connected separately, and then perform a secondary self-locking connection. This reduces the convenience of connection and affects the accuracy of connection. Utility Model Content

[0004] The purpose of this invention is to provide a self-locking three-dimensional metal node connection mechanism to solve the problems of unsatisfactory connection convenience and reduced connection accuracy in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-locking three-dimensional metal node connection mechanism, comprising a connecting rod, a fixing rod, and a connecting sphere; a self-locking block is provided inside the connecting sphere, a second spring is movably installed between the self-locking block and the connecting sphere, a fixing rod is movably installed around the connecting sphere, a plurality of fixing rods are provided, a locking block is installed on the inner side of the plurality of fixing rods close to each other, a connecting rod is movably installed on the outer side of the plurality of fixing rods, a connecting block is fixedly connected to the inner side of the connecting rod, a locking block is movably installed on one side of the connecting block, a first spring is movably installed between the locking block and the connecting block; an annular groove is provided inside the connecting sphere surrounding the self-locking block, and a rectangular groove is provided inside the connecting sphere surrounding the annular groove.

[0006] Preferably, the end of the locking block away from the first spring is engaged with the locking block, and the locking block has a slot on the side facing the locking block. The end of the locking block is embedded in the slot, and the shape of the slot is adapted to the shape of the end of the locking block.

[0007] Preferably, the outer wall of the self-locking block is in contact with the inner wall of the annular groove, and the second spring can extend and retract as the self-locking block slides.

[0008] Preferably, both the first and second springs are compression springs, and a portion of the self-locking block extends outside the annular groove.

[0009] Preferably, the fixing rod is fitted into the rectangular groove.

[0010] Preferably, the plurality of fixing rods are evenly distributed in a circle around the center of the connecting ball, the included angle between two adjacent fixing rods is equal, and the locking block on the inner side of each fixing rod corresponds one-to-one with the locking block on the corresponding connecting rod.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This utility model achieves secondary self-locking connections between the connecting rod and the connecting ball, and between the fixed rod and the connecting rod, through a primary self-locking structure consisting of a connecting ball as the core, a first spring component, a locking block, and a latching block, and a secondary connection structure formed by a second spring component, a self-locking block, and an annular groove. This design allows workers to quickly assemble the metal structure using simple operations such as pushing and fitting, without relying on complex tools, significantly reducing assembly time. Simultaneously, the secondary self-locking structure facilitates workers to separately fix the structure to the device body and the metal structure to be connected, and then perform a second confirmation before connecting, making the connection of the metal structure more convenient and improving connection accuracy.

[0013] 2. This utility model, through the three-dimensional spherical structure of the connecting sphere and the uniformly distributed circumference of the fixing rods centered on the sphere, allows workers to flexibly choose the assembly direction of the fixing rods according to the actual layout requirements of the metal structure, easily achieving multi-directional connections and breaking the limitation of the single connection direction of traditional nodes. At the same time, with the help of the annular groove and rectangular groove integrated on the connecting sphere, circular or rectangular fixing rods and connecting rods can be replaced as needed without replacing the entire node mechanism. This allows it to adapt to metal structures with different cross-sectional types such as circles and rectangles, greatly expanding the applicable scenarios of the mechanism and reducing the usage cost under diverse connection requirements. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a partial structural diagram of the connecting rod and fixing rod provided in an embodiment of the present utility model;

[0016] Figure 2 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0017] Figure 3 This is a partial structural diagram of the card block and connecting block provided in an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure provided for an embodiment of the present utility model.

[0019] In the picture:

[0020] 1. Connecting rod; 2. Fixing rod; 201. Locking block; 3. Connecting ball; 4. Connecting block; 401. Locking block; 402. First spring component; 5. Annular groove; 6. Rectangular groove; 7. Self-locking block; 701. Second spring component. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] As attached Figure 1 To be continued Figure 4 As shown:

[0023] Example 1: This utility model provides a self-locking three-dimensional metal node connection mechanism, including a connecting rod 1, a fixing rod 2, and a connecting ball 3; a self-locking block 7 is provided inside the connecting ball 3, and a second spring 701 is movably installed between the self-locking block 7 and the connecting ball 3; a fixing rod 2 is movably installed on the periphery of the connecting ball 3, and several fixing rods 2 are provided; a locking block 201 is installed on the inner side of several fixing rods 2 that are close to each other; a connecting rod 1 is movably installed on the outer side of several fixing rods 2; a connecting block 4 is fixedly connected to the inner side of the connecting rod 1; a locking block 401 is movably installed on one side of the connecting block 4; and a first spring 402 is movably installed between the locking block 401 and the connecting block 4.

[0024] The connecting mechanism uses the connecting ball 3 as the core to achieve rapid connection of multi-metal structures. The operator can first align the connecting rod 1 with the connecting ball 3 for assembly. During assembly, the connecting block 4 on the inner side of the connecting rod 1 moves towards the connecting ball 3 along with the connecting rod 1. During the process, the locking block 401 on the connecting block 4 contacts and is squeezed by the locking block 201 on the inner side of the fixing rod 2 on the outer periphery of the connecting ball 3, and moves towards the first spring 402 and compresses the spring to store elastic potential energy. When the locking block 401 moves to the slot position of the locking block 201, the first spring 402 releases potential energy to push the locking block 401 into the slot, completing the initial self-locking connection between the connecting rod 1 and the connecting ball 3. Meanwhile, the self-locking block 7 inside the connecting ball 3 fits against the inner wall of the annular groove 5. With the cooperation of the second spring 701, it can further strengthen the connection stability between the connecting rod 1 and the connecting ball 3 through its own sliding, achieving the anti-loosening effect after initial self-locking. After the self-locking of the connecting rod 1 and the connecting ball 3 is completed, the worker pre-fixes the fixing rod 2 to the external metal structure to be connected. Then, the fixing rod 2 is aligned with the connecting ball 3 with the assembled connecting rod 1. Using the interlocking structure of the rectangular groove 6 on the connecting ball 3 and the fixing rod 2, the fixing rod 2 is inserted into the inside of the connecting rod 1. At this time, the fixing rod 2 and the connecting rod 1 achieve self-locking through the secondary interlocking of the corresponding card block 201 and the locking block 401. Combined with the three-dimensional structural characteristics of the connecting ball 3, the worker can select the assembly direction of the fixing rod 2 on the connecting ball 3 according to the connection requirements of the metal structure. Since the fixing rods 2 are evenly distributed around the center of the connecting ball 3, and the included angles of adjacent fixing rods 2 are equal, they can flexibly adapt to multi-directional connections.

[0025] In one embodiment of the present invention, the end of the locking block 401 away from the first spring member 402 is engaged with the locking block 201, and the locking block 201 has a slot on the side facing the locking block 401, the end of the locking block 401 is embedded in the slot, and the shape of the slot is adapted to the shape of the end of the locking block 401.

[0026] When connecting rod 1 and fixed rod 2 are assembled, connecting block 4 on the inner side of connecting rod 1 moves towards fixed rod 2. During this process, locking block 201 on the inner side of fixed rod 2 contacts locking block 401 on connecting block 4. As the assembly continues, locking block 401 is subjected to the squeezing force of locking block 201 and moves towards the first spring 402, while simultaneously compressing and deforming the first spring 402 and storing elastic potential energy. When locking block 401 moves to the position of the slot on locking block 201, the first spring 402 releases its elastic potential energy, pushing locking block 401 back towards the slot, ultimately causing the end of locking block 401 to embed into the slot.

[0027] In one embodiment of the present invention, the outer wall of the self-locking block 7 is in contact with the inner wall of the annular groove 5, and the second spring 701 can extend and retract as the self-locking block 7 slides.

[0028] Inside the connecting sphere 3, the outer wall of the self-locking block 7 is tightly fitted to the inner wall of the annular groove 5. This fitting structure guides and limits the movement of the self-locking block 7, ensuring that the self-locking block 7 can only slide along the axial direction of the annular groove 5, preventing it from deviating or wobbling during movement. When the connecting mechanism is subjected to an external force, causing the self-locking block 7 to tend to slide or slide, the second spring member 701 connected to the self-locking block 7 will expand and contract as the self-locking block 7 slides.

[0029] In one embodiment of the present invention, the first spring member 402 and the second spring member 701 are both compression springs, and part of the structure of the self-locking block 7 extends to the outside of the annular groove 5.

[0030] Both the first spring 402 and the second spring 701 are compression springs. Compression springs have the characteristic of elastically deforming and storing elastic potential energy when subjected to axial pressure, and quickly returning to their original shape after the pressure is released. During the assembly and locking process of the connecting rod 1 and the fixed rod 2, the first spring 402 is compressed by the locking block 401. The stored elastic potential energy provides power for the locking block 401 and the locking block 201 to engage, ensuring that the two can be tightly locked together.

[0031] In one embodiment of this utility model, the fixing rod 2 is fitted into the rectangular groove 6.

[0032] During the assembly of the connecting mechanism, the fixing rod 2 needs to be connected to the connecting ball 3. At this time, the fixing rod 2 is aligned with the rectangular groove 6 inside the connecting ball 3, so that the fixing rod 2 is embedded in the rectangular groove 6. The shape and size of the rectangular groove 6 match the fixing rod 2. This fitting structure can play a circumferential limiting role for the fixing rod 2, effectively preventing the fixing rod 2 from rotating around the center of the connecting ball 3, and ensuring that the fixing rod 2 maintains a fixed angular position on the connecting ball 3.

[0033] In one embodiment of this utility model, a plurality of fixing rods 2 are evenly distributed in a circle around the center of the connecting ball 3, the included angle between two adjacent fixing rods 2 is equal, and the locking block 201 on the inner side of each fixing rod 2 corresponds one-to-one with the locking block 401 on the corresponding connecting rod 1.

[0034] This distribution method ensures that the force around the connecting sphere 3 is evenly distributed. When the connecting mechanism bears an external load, the load can be evenly transferred to the connecting sphere 3 through each fixing rod 2, avoiding excessive local stress due to uneven distribution of the fixing rods 2. This prevents deformation or damage to the connecting sphere 3 or fixing rods 2 due to concentrated stress, extending the service life of the connecting mechanism. Furthermore, the locking block 201 on the inner side of each fixing rod 2 corresponds one-to-one with the locking block 401 on the corresponding connecting rod 1. This one-to-one correspondence design ensures that each fixing rod 2 and its corresponding connecting rod 1 can achieve precise locking. During assembly, operators do not need to spend excessive time adjusting the positions of the locking block 201 and the locking block 401; they can directly align and connect the connecting rod 1 and the fixing rod 2, improving assembly efficiency.

[0035] Working principle: When the worker is assembling, the connecting rod 1 is first pushed towards the connecting ball 3. During this process, the connecting block 4 on the inner side of the connecting rod 1 moves synchronously. The locking block 401 on its side will squeeze the locking block 201 on the inner side of the fixing rod 2 on the outer side of the connecting ball 3, causing the locking block 401 to contract towards the first spring 402, so that the first spring 402 is compressed and accumulates elastic force. When the locking block 401 moves to the preset slot of the locking block 201, the first spring 402 releases its elastic force instantly, pushing the locking block 401 into the slot, thus achieving initial self-locking between the connecting rod 1 and the connecting ball 3. At the same time, the self-locking block 7 inside the connecting ball 3 adheres to the inner wall of the annular groove 5 and undergoes adaptive sliding under the elastic support of the second spring 701, further enhancing the stability of the connection between the connecting rod 1 and the connecting ball 3 and preventing loosening. After the self-locking between the connecting rod 1 and the connecting ball 3 is completed, the worker first fixes the fixing rod 2 to the external metal structure to be connected, and then aligns the fixing rod 2 with the connecting ball 3 that has been connected to the connecting rod 1. Using the matching structure between the rectangular groove 6 on the connecting ball 3 and the fixing rod 2, the fixing rod 2 is inserted into the inner gap of the connecting rod 1. At this time, the locking block 201 on the fixing rod 2 and the locking block 401 on the connecting rod 1 form a locking again, completing the secondary self-locking and achieving a stable connection between the external metal structure and the node mechanism.

[0036] Example 2: This example is basically the same as the previous example, except that the connecting ball 3 around the self-locking block 7 is provided with an annular groove 5, and the connecting ball 3 around the annular groove 5 is provided with a rectangular groove 6.

[0037] The connecting sphere 3 integrates both annular groove 5 and rectangular groove 6, two independent yet interconnected structures that run through the core connection area of ​​the sphere 3. This provides a basis for the flexible replacement of the fixing rod 2 and connecting rod 1. When facing an external metal structure with a circular cross-section, the operator can use the circular fixing rod 2 and connecting rod 1, precisely fitting them into the annular groove 5 within the connecting sphere 3. The fit between the inner wall of the annular groove 5 and the circular rod ensures stability after connection. For connecting a metal structure with a rectangular cross-section, the rectangular fixing rod 2 and connecting rod 1 can be replaced, achieving a tight fit with the rectangular groove 6. The circumferential limiting effect of the rectangular groove 6 prevents rotation of the rod under stress. This design, with its two groove types and corresponding rod shapes, eliminates the need for a complete replacement of the mechanism. By simply replacing the fixing rod 2 and connecting rod 1, it can adapt to metal structures with different cross-sections, significantly improving its applicability in diverse scenarios such as building frame splicing and mechanical component assembly.

[0038] Working principle: The connecting sphere 3 has both annular groove 5 and rectangular groove 6. When connecting a circular cross-section metal structure, a circular fixing rod 2 and connecting rod 1 can be used to fit the annular groove 5. When connecting a rectangular cross-section metal structure, the rectangular fixing rod 2 and connecting rod 1 can be used to fit the rectangular groove 6. The entire mechanism can be adapted to different types of metal structures without replacing it, thus improving the applicability of the scenario.

[0039] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A self-locking three-dimensional metal node connection mechanism, characterized in that: It includes a connecting rod (1), a fixing rod (2), and a connecting ball (3); The connecting ball (3) is provided with a self-locking block (7) inside. A second spring (701) is movably installed between the self-locking block (7) and the connecting ball (3). A fixing rod (2) is movably installed on the periphery of the connecting ball (3). Several fixing rods (2) are provided. A locking block (201) is installed on the inner side of several fixing rods (2) that are close to each other. A connecting rod (1) is movably installed on the outer side of several fixing rods (2). A connecting block (4) is fixedly connected to the inner side of the connecting rod (1). A locking block (401) is movably installed on one side of the connecting block (4). A first spring (402) is movably installed between the locking block (401) and the connecting block (4). An annular groove (5) is provided inside the connecting ball (3) surrounding the self-locking block (7), and a rectangular groove (6) is provided inside the connecting ball (3) surrounding the annular groove (5).

2. The self-locking three-dimensional metal node connection mechanism according to claim 1, characterized in that: The locking block (401) is engaged with the locking block (201) at one end away from the first spring (402), and the locking block (201) has a slot on one side facing the locking block (401). The end of the locking block (401) is embedded in the slot, and the shape of the slot is adapted to the shape of the end of the locking block (401).

3. The self-locking three-dimensional metal node connection mechanism according to claim 1, characterized in that: The outer wall of the self-locking block (7) is in contact with the inner wall of the annular groove (5), and the second spring (701) can extend and retract as the self-locking block (7) slides.

4. The self-locking three-dimensional metal node connection mechanism according to claim 1, characterized in that: The first spring (402) and the second spring (701) are both compression springs, and part of the structure of the self-locking block (7) extends to the outside of the annular groove (5).

5. The self-locking three-dimensional metal node connection mechanism according to claim 1, characterized in that: The fixing rod (2) is fitted into the rectangular groove (6).

6. The self-locking three-dimensional metal node connection mechanism according to claim 1, characterized in that: Several fixed rods (2) are evenly distributed in a circle around the center of the connecting ball (3). The included angle between two adjacent fixed rods (2) is equal, and the locking block (201) on the inner side of each fixed rod (2) corresponds one-to-one with the locking block (401) on the corresponding connecting rod (1).

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