A reinforced folding joint

Abstract

The utility model relates to joint technical field especially is a kind of reinforced folding joint, including first joint and second joint, first joint is embedded with first reinforcing sheet inside, and the side plate or both side plates of second joint is embedded with second reinforcing sheet, and the joint part of second joint is provided with adapter slot, and the joint part of first joint is rotationally arranged in adapter slot, and the joint part of first joint and first reinforcing sheet are all provided with corresponding intercommunicating arc-shaped rotary guide slot, and the joint part of second reinforcing sheet is equipped with reinforcing guide rod, and reinforcing guide rod extends into arc-shaped rotary guide slot inside.The structure of the application is simple, the relative rotation stability of first joint and second joint is good, and by the setting of reinforcing guide rod, first reinforcing sheet and second reinforcing sheet, the strength and hardness of first joint and second joint are greatly improved, and the supporting force / sustaining force of first joint and second joint is strengthened.

Description

Technical Field

[0001] This utility model relates to the field of joint technology, and in particular to a reinforced folding joint. Background Technology

[0002] Folding joints are widely used in structures that require folding and unfolding. For example, many strollers and other walking vehicles are equipped with folding joints to allow them to be folded up for easy carrying and storage. There are many existing structural forms of folding joints. In existing patents, the applicant filed a patent application (application number 201029068094.0) for a structurally improved foldable joint. This patent document discloses that the connecting lugs of the moving joint are made of plastic, with reinforcing metal plates embedded inside. Both connecting lugs of the fixed joint are also made of plastic, with reinforcing metal plates embedded inside each of the two connecting lugs. While this patent document uses reinforcing metal plates embedded in the moving and fixed joints, it only strengthens the joints themselves and does not increase the supporting or load-bearing capacity when the moving and fixed joints are unfolded or folded. Furthermore, the rotating connection between the moving and fixed joints is prone to damage or deformation due to excessive force, resulting in a short service life. Therefore, the shortcomings are quite obvious, and a solution is urgently needed. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a reinforced folding joint.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A reinforced folding joint includes a first joint and a second joint. A first reinforcing plate is embedded inside the first joint, and a second reinforcing plate is embedded in one or both side plates of the second joint. A transition groove is provided at the joint portion of the second joint, and the joint portion of the first joint is rotatably disposed in the transition groove. Both the joint portion of the first joint and the first reinforcing plate are provided with corresponding and communicating arc-shaped rotation guide grooves. A reinforcing guide rod is installed at the joint portion of the second reinforcing plate, and the reinforcing guide rod extends into the arc-shaped rotation guide groove.

[0006] Furthermore, the reinforcing guide rod extends into the adapter groove after passing through one side plate of the second joint.

[0007] Furthermore, the guide rods are reinforced and installed on both sides of the second joint, and the guide rods penetrate the transition groove.

[0008] Furthermore, a snap-fit ​​plate is slidably disposed inside the second joint, and a through hole is provided on the inner wall of the transition groove. The snap-fit ​​plate extends into the transition groove through the through hole. The peripheral sidewall of the joint part of the first joint and the peripheral sidewall of the first reinforcing plate are both recessed with corresponding and communicating snap-fit ​​holes, and the snap-fit ​​plate is used to snap into the snap-fit ​​holes.

[0009] Furthermore, the shaft portion of the second joint is provided with a sliding groove, and the snap-fit ​​plate is provided with a slider, which is slidably connected to the sliding groove.

[0010] Furthermore, the slider is elastically connected to the shaft portion of the second joint via an elastic element.

[0011] Furthermore, the outer side wall of the side plate of the second joint is recessed with an insert cavity, and the second reinforcing plate is inserted into the insert cavity.

[0012] Furthermore, a cover plate is installed on the outer side wall of the side plate of the second joint, and the cover plate covers the outside of the second reinforcing plate.

[0013] Furthermore, the joint portion of the first joint is rotatably connected to the joint portion of the second joint via a pivot, with the pivot passing through a transition groove.

[0014] Furthermore, the first reinforcing plate, the second reinforcing plate, and the reinforcing guide rod are all made of metal.

[0015] The beneficial effects of this utility model are as follows: In practical applications, the first joint and the second joint can rotate relative to each other to achieve folding or unfolding of the first joint and the second joint. When the first joint and the second joint rotate relative to each other, the reinforcing guide rod can move relative to each other within the arc-shaped rotation guide groove. Through the cooperation of the reinforcing guide rod and the arc-shaped rotation guide groove, on the one hand, it guides the relative rotation of the first joint and the second joint, improves the stability of the rotation of the first joint relative to the second joint, and limits the angle range of the relative rotation of the first joint and the second joint, ensuring that the first joint and the second joint fold or unfold within the preset angle range. On the other hand, when the first joint and the second joint are fully unfolded, the reinforcing guide rod and the arc-shaped rotation guide groove provide a stable rotation. One end of the arc-shaped rotating guide groove abuts against the first reinforcing plate, strengthening the support / bearing capacity of the first and second joints when fully extended. Even with excessive unfolding force applied to the first and / or second joints, damage or deformation is unlikely. When the first and second joints are fully folded, the other end of the reinforcing guide rod abuts against the arc-shaped rotating guide groove, again strengthening the support / bearing capacity of the first and second joints when fully folded. Even with excessive folding force applied to the first and / or second joints, damage or deformation is unlikely. Furthermore, the presence of the first and second reinforcing plates in the first and second joints respectively improves their strength and rigidity, resulting in a longer service life. This invention features a simple structure, good relative rotational stability between the first and second joints, and significantly enhances their strength and rigidity through the reinforcing guide rod, first reinforcing plate, and second reinforcing plate, thereby strengthening their support / bearing capacity. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0018] Figure 3 This is an exploded structural diagram of the present invention.

[0019] Figure 4 This is an exploded structural diagram from another perspective of the present invention.

[0020] Figure 5 This is a three-dimensional structural diagram of the second joint of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. First joint; 2. Second joint; 3. First reinforcing plate; 4. Second reinforcing plate; 5. Adapter groove; 6. Arc-shaped rotating guide groove; 7. Reinforcing guide rod; 8. Snap-fit ​​plate; 9. Through hole; 10. Snap-fit ​​hole; 11. Slide groove; 12. Slider; 13. Embedded cavity; 14. Cover plate; 15. Rotating shaft. Detailed Implementation

[0023] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0024] like Figures 1 to 5 As shown, the present invention provides a reinforced folding joint, which includes a first joint 1 and a second joint 2. A first reinforcing plate 3 is embedded inside the first joint 1. A second reinforcing plate 4 is embedded in one side plate or both side plates of the second joint 2. A transition groove 5 is opened in the joint part of the second joint 2. The joint part of the first joint 1 is rotatably disposed in the transition groove 5. Both the joint part of the first joint 1 and the first reinforcing plate 3 are provided with corresponding and communicating arc-shaped rotation guide grooves 6. A reinforcing guide rod 7 is installed in the joint part of the second reinforcing plate 4. The reinforcing guide rod 7 extends into the arc-shaped rotation guide groove 6.

[0025] In practical applications, the first joint 1 and the second joint 2 can rotate relative to each other to achieve folding or unfolding of the first joint 1 and the second joint 2. When the first joint 1 and the second joint 2 rotate relative to each other, the reinforcing guide rod 7 can move relative to each other within the arc-shaped rotation guide groove 6. Through the cooperation of the reinforcing guide rod 7 and the arc-shaped rotation guide groove 6, on the one hand, it guides the relative rotation of the first joint 1 and the second joint 2, improves the stability of the rotation of the first joint 1 relative to the second joint 2, and limits the angle range of the relative rotation of the first joint 1 and the second joint 2, ensuring that the first joint 1 and the second joint 2 fold or unfold within the preset angle range. On the other hand, when the first joint 1 and the second joint 2 are fully unfolded, the reinforcing guide rod 7 and the arc-shaped rotation guide groove... One end of the reinforcing guide rod 7 abuts against the first reinforcing plate 3, strengthening the support / bearing capacity of the first joint 1 and the second joint 2 when fully extended. Even if excessive unfolding force is applied to the first joint 1 and / or the second joint 2, damage or deformation of the first joint 1 and the second joint 2 is unlikely. When the first joint 1 and the second joint 2 are fully folded, the other end of the reinforcing guide rod 7 abuts against the arc-shaped rotating guide groove 6. Through the abutment of the reinforcing guide rod 7 and the first reinforcing plate 3, the support / bearing capacity of the first joint 1 and the second joint 2 when fully folded is further strengthened. Even if excessive folding force is applied to the first joint 1 and / or the second joint 2, damage or deformation of the first joint 1 and the second joint 2 is unlikely. Furthermore, since the first joint 1 and the second joint 2 are respectively provided with the first reinforcing plate 3 and the second reinforcing plate 4, the strength and hardness of the first joint 1 and the second joint 2 are improved, resulting in a long service life. The present invention has a simple structure, good relative rotational stability between the first joint 1 and the second joint 2, and by setting the reinforcing guide rod 7, the first reinforcing plate 3 and the second reinforcing plate 4, the strength and hardness of the first joint 1 and the second joint 2 are greatly improved, and the supporting force / bearing force of the first joint 1 and the second joint 2 are enhanced.

[0026] Specifically, the first reinforcing piece 3 and the first joint 1 are integrally injection molded, or the first reinforcing piece 3 is sandwiched in the middle of the first joint 1.

[0027] In this embodiment, the reinforcing guide rod 7 is installed on both side plates of the second joint 2, and the reinforcing guide rod 7 passes through the transition groove 5. This structural design allows the reinforcing guide rod 7 to be installed not only on the second reinforcing plate 4, but also on both side plates of the second joint 2 (the joint part of the second joint 2), which greatly improves the firmness and stability of the installation of the reinforcing guide rod 7, and also increases the support force / bearing capacity of the reinforcing guide rod 7.

[0028] In another embodiment, the reinforcing guide rod 7 extends into the transition groove 5 after passing through one side plate of the second joint 2. This structural design allows the reinforcing guide rod 7 to be installed not only on the second reinforcing plate 4, but also on one side plate of the second joint 2, which improves the firmness and stability of the installation of the reinforcing guide rod 7, and also increases the support force / bearing capacity of the reinforcing guide rod 7.

[0029] In this embodiment, a snap-fit ​​plate 8 is slidably disposed within the second joint 2. A through hole 9 is formed in the inner wall of the transition groove 5, through which the snap-fit ​​plate 8 extends into the transition groove 5. Corresponding and communicating snap-fit ​​holes 10 are recessed on the peripheral sidewall of the joint portion of the first joint 1 and the peripheral sidewall of the first reinforcing plate 3. The snap-fit ​​plate 8 is used to snap into the snap-fit ​​holes 10. When the first joint 1 and the second joint 2 are in a fully extended state, the snap-fit ​​plate 8 corresponds to the snap-fit ​​hole 10, and the snap-fit ​​plate 8 is inserted into the snap-fit ​​hole 10, snapping into the snap-fit ​​hole 10 to lock the first joint 1 and the second joint 2, thereby ensuring that the first joint 1 and the second joint 2 remain in a fully extended state. When the first joint 1 and the second joint 2 are folded, the snap-fit ​​plate 8 abuts or slides against the peripheral sidewall of the joint portion of the first joint 1.

[0030] In this embodiment, the shaft portion of the second joint 2 is provided with a sliding groove 11, and the snap-fit ​​plate 8 is provided with a slider 12, which is slidably connected to the sliding groove 11. In practical applications, the slider 12 moves back and forth along the inner wall of the sliding groove 11, allowing the snap-fit ​​plate 8 to be inserted into or removed from the snap-fit ​​hole 10. The sliding engagement between the slider 12 and the sliding groove 11 improves the stability of the snap-fit ​​plate 8's extension and retraction.

[0031] Specifically, the slider 12 is connected to a pull rope. By pulling the rope, the slider 12 overcomes the elastic force of the elastic element and moves away from the locking hole 10, causing the elastic element to be compressed. The locking plate 8 moves away from the locking hole 10, thereby allowing the first joint 1 and the second joint 2 to rotate relative to each other.

[0032] In this embodiment, the slider 12 is elastically connected to the shaft portion of the second joint 2 via an elastic element. Specifically, the elastic element is a spring. In practical applications, the elastic element applies a spring force to the slider 12 toward the locking hole 10, so that the locking plate 8 can stably engage with the locking hole 10; when the locking plate 8 moves away from the locking hole 10 and abuts against the peripheral wall of the joint portion of the first joint 1, the spring force of the elastic element allows the locking plate 8 to continuously abut against the peripheral wall of the joint portion of the first joint 1.

[0033] Specifically, the free end of the snap-fit ​​plate 8 is provided with an arc surface, which matches the concave and convex shape of the peripheral wall of the joint portion of the first joint 1. When the snap-fit ​​plate 8 moves away from the snap-fit ​​hole 10 and abuts against the peripheral wall of the joint portion of the first joint 1, the arc surface of the snap-fit ​​plate 8 can slide against the peripheral wall of the joint portion of the first joint 1.

[0034] In this embodiment, the outer side wall of the side plate of the second joint 2 is recessed with an insert cavity 13, and the second reinforcing plate 4 is inserted into the insert cavity 13. This structural design facilitates the positioning and assembly of the second joint 2 and the second reinforcing plate 4, making the structure of the second joint 2 and the second reinforcing plate 4 compact.

[0035] In this embodiment, a cover plate 14 is installed on the outer side wall of the side plate of the second joint 2, and the cover plate 14 covers the second reinforcing plate 4. By covering the second reinforcing plate 4 with the cover plate 14, the exposure of the second reinforcing plate 4 is avoided, making the second joint 2 aesthetically pleasing, thereby making the folding joint aesthetically pleasing.

[0036] In this embodiment, the joint portion of the first joint 1 is rotatably connected to the joint portion of the second joint 2 via a rotating shaft 15, which passes through the transition groove 5. Specifically, the rotating shaft 15 is a metal shaft, such as a stainless steel shaft. This structural design ensures stable rotation and a firm connection between the first joint 1 and the second joint 2.

[0037] In this embodiment, the first reinforcing plate 3, the second reinforcing plate 4, and the reinforcing guide rod 7 are all made of metal.

[0038] All technical features in this embodiment can be freely combined according to actual needs.

[0039] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A reinforced folding joint, characterized in that: It includes a first joint (1) and a second joint (2). The first joint (1) is embedded with a first reinforcing plate (3). The second joint (2) has a second reinforcing plate (4) embedded in one side plate or both side plates. The joint part of the second joint (2) is provided with a transition groove (5). The joint part of the first joint (1) is rotatably disposed in the transition groove (5). The joint part of the first joint (1) and the first reinforcing plate (3) are both provided with corresponding and communicating arc-shaped rotating guide grooves (6). The joint part of the second reinforcing plate (4) is equipped with a reinforcing guide rod (7). The reinforcing guide rod (7) extends into the arc-shaped rotating guide groove (6).

2. The reinforced folding joint according to claim 1, characterized in that: The reinforcing guide rod (7) passes through one side plate of the second joint (2) and extends into the adapter groove (5).

3. A reinforced folding joint according to claim 1, characterized in that: The reinforcing guide rod (7) is installed on both sides of the second joint (2) and passes through the transition groove (5).

4. A reinforced folding joint according to claim 1, characterized in that: The second joint (2) is slidably provided with a snap-fit ​​plate (8). The inner wall of the transition groove (5) is provided with a through hole (9). The snap-fit ​​plate (8) extends into the transition groove (5) through the through hole (9). The peripheral side wall of the joint part of the first joint (1) and the peripheral side wall of the first reinforcing plate (3) are both recessed with corresponding and communicating snap-fit ​​holes (10). The snap-fit ​​plate (8) is used to snap into the snap-fit ​​hole (10).

5. A reinforced folding joint according to claim 4, characterized in that: The shaft of the second joint (2) is provided with a sliding groove (11), and the snap-fit ​​plate (8) is provided with a slider (12), which is slidably connected to the sliding groove (11).

6. A reinforced folding joint according to claim 5, characterized in that: The slider (12) is elastically connected to the shaft of the second joint (2) via an elastic element.

7. A reinforced folding joint according to claim 1, characterized in that: The side plate of the second joint (2) has a recessed cavity (13) on the outer side wall, and the second reinforcing plate (4) is embedded in the cavity (13).

8. A reinforced folding joint according to claim 7, characterized in that: The outer side wall of the side plate of the second joint (2) is equipped with a cover plate (14), which covers the second reinforcing plate (4).

9. A reinforced folding joint according to claim 1, characterized in that: The joint of the first joint (1) is rotatably connected to the joint of the second joint (2) via a pivot (15), and the pivot (15) passes through the adapter groove (5).

10. A reinforced folding joint according to claim 1, characterized in that: The first reinforcing plate (3), the second reinforcing plate (4), and the reinforcing guide rod (7) are all made of metal.

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