Umbrella rib hinging assembly

Abstract

The utility model discloses an umbrella rib hinge assembly which comprises a first hinge arm and a second hinge arm, one end of the first hinge arm and one end of the second hinge arm are rotationally connected with each other, the other end of the first hinge arm and the other end of the second hinge arm are both connected with umbrella supporting ribs, and the first hinge arm and the second hinge arm are both provided with sewing thread holes used for positioning sewing threads. According to the umbrella rib hinge assembly, the suture holes are formed in the first hinge arm and the second hinge arm, when the umbrella cloth and the umbrella ribs are fixed through the suture holes, the umbrella cloth and the umbrella ribs are fixed by penetrating the suture holes through the suture lines, punching in the middles of the umbrella ribs is not needed, and the requirement for positioning the suture lines of the umbrella cloth can be met under the condition that the strength of the umbrella ribs is not lost; and the processing difficulty and the processing cost are lower.

Description

Technical Field

[0001] This utility model belongs to the field of umbrella technology, specifically an umbrella rib hinge assembly. Background Technology

[0002] As a tool for providing shade and protection from rain, an umbrella's basic structure mainly includes a handle, ribs (including main ribs and support ribs), and the canopy covering the ribs. The secure fixing of the canopy directly determines the umbrella's lifespan, wind resistance, and overall aesthetics.

[0003] In related technologies, for small and medium-sized umbrellas, the umbrella ribs are typically made of thin metal strips or rods. These ribs are easy to manufacture. The most common method of attaching the umbrella fabric to the ribs involves pre-machining small stitching holes in the ribs. The edge of the fabric is then sewn directly to the ribs through these holes using stitching. This sewing method is mature, inexpensive, and relatively reliable for small-sized, low-load umbrellas, providing the necessary connection strength for everyday use.

[0004] However, with the increasing size of umbrellas, such as large beach umbrellas, outdoor sun umbrellas, advertising umbrellas, and industrial umbrellas, the structural strength and dimensions of the umbrella ribs must increase accordingly to support a larger canopy area and resist stronger wind loads. In this case, the umbrella ribs are typically made of thicker tubing or solid rods. The material thickness, cross-sectional dimensions, and strength of the ribs in these large umbrellas far exceed those of the thin metal strips used in smaller umbrellas. This increase in the size and strength of the ribs has created a significant bottleneck in existing fixing technologies. Drilling small, dense, and through-hole positioning holes in thicker metal tubing or solid rods becomes extremely difficult. The drilling process can easily lead to tubing deformation, burrs, and may even weaken the mechanical properties of the ribs themselves due to stress concentration. For certain high-strength alloy materials or tubing with special cross-sections, drilling is costly, inefficient, and it is difficult to guarantee the accuracy and consistency of the hole positions. Drilling solid rods is even more time-consuming and labor-intensive, and the drilling itself can create potential stress concentration points and fracture risk points. The industry urgently needs a new umbrella fabric fixing technology that is suitable for large umbrella ribs, does not require machining small holes in the umbrella ribs, and can provide high strength, high reliability and good processability, in order to solve the key pain points in the manufacturing and use of large umbrellas. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing an umbrella rib hinge assembly. This assembly enables large umbrellas to be foldable while providing stitching holes on the hinge arm, eliminating the need to drill holes in the middle of the umbrella ribs. It can meet the requirement of positioning the umbrella fabric stitching without compromising the strength of the umbrella ribs, and it is also easier and cheaper to process.

[0006] To solve the aforementioned technical problems, this utility model provides the following technical solution: an umbrella rib hinge assembly, comprising a first hinge arm and a second hinge arm rotatably connected at one end, with umbrella ribs connected to the other end of both the first and second hinge arms. Both the first and second hinge arms are provided with sewing holes for positioning the sewing thread. This umbrella rib hinge assembly has sewing holes on the first and second hinge arms. When the umbrella fabric is sewn to the umbrella ribs, the fabric is fixed by passing the sewing thread through the sewing holes. This eliminates the need to drill holes in the middle of the umbrella ribs, meeting the requirement for positioning the fabric sewing thread without compromising the strength of the umbrella ribs, and also reduces processing difficulty and cost.

[0007] In the above technical solution, preferably, when the first hinge arm and the second hinge arm are extended to the point where the second hinge arm abuts against the support portion, the stitching hole is located on the same side of the two first hinge arms and the second hinge arm.

[0008] In the above technical solution, preferably, one end of the first hinge arm is provided with two positioning walls with a gap, and the two positioning walls are provided with aligned first through holes. One end of the second hinge arm extends between the two positioning walls, and the second hinge arm located between the two positioning walls is provided with a second through hole. The same hinge shaft is inserted into the first through hole and the second through hole. The sides of the two positioning walls are provided with support parts to abut against and support the second hinge arm. With this structure, when the umbrella is opened, the second hinge arm is supported by the support parts, so that the umbrella ribs can be stably supported.

[0009] In the above technical solution, preferably, when the first hinge arm and the second hinge arm are extended to the point where the second hinge arm abuts against the support portion, the umbrella rib connected to the second hinge arm and the umbrella rib connected to the second hinge arm are located on the same straight line.

[0010] In the above technical solution, preferably, the position of the first through hole is offset from the extension line of the umbrella rib on the first hinge arm. Since the umbrella ribs of large umbrellas are thicker, this structure allows the first hinge arm and the second hinge arm to be folded to a parallel position when folded, avoiding interference between the first hinge arm and the second hinge arm, which would cause the second hinge arm to form a certain angle with the first hinge arm, thus causing the outer edge of the umbrella fabric to bulge outward.

[0011] In the above technical solution, preferably, the inner sides of the two positioning walls are provided with inclined support surfaces, and the second hinge arm is provided with an abutting slope. When the first hinge arm and the second hinge arm are folded until the abutting slope abuts against the support surface, the umbrella ribs on the first hinge arm are parallel to the umbrella ribs on the second hinge arm.

[0012] In the above technical solution, preferably, the openings of the first hinge arm, including the two positioning walls and the support portion, are provided with reinforcing ribs extending outwards. This structure further strengthens the support of the support portion and prevents cracking due to factors such as wind during use.

[0013] In the above technical solution, preferably, the first hinge arm and the second hinge arm are rotatably connected by a rivet passing through the first through hole and the second through hole, and the rivet serves as the hinge shaft. This structure further facilitates the hinge connection between the first hinge arm and the second hinge arm.

[0014] In the above technical solution, preferably, the ends of the first hinge arm and the second hinge arm away from the hinge axis are provided with connecting holes, and the umbrella support ribs are inserted into the connecting holes.

[0015] In the above technical solution, preferably, both the first hinge arm and the second hinge arm are connected to the umbrella support frame via secondary injection molding at the end of the frame. This structure results in a higher connection strength between the first and second hinge arms and the umbrella support frame.

[0016] Compared with the prior art, this utility model has the following advantages: the first and second hinge arms of this umbrella rib hinge assembly are provided with sewing holes. When the umbrella fabric and the umbrella rib are sewn together, the umbrella fabric and the umbrella rib are fixed by passing the sewing thread through the sewing holes. It can meet the requirement of positioning the umbrella fabric sewing without the need to drill holes in the middle of the umbrella rib without losing the strength of the umbrella rib. Moreover, the processing difficulty and processing cost are lower. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure in the unfolded state of an embodiment of this utility model.

[0018] Figure 2 This is a structural diagram of the folded state of an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the first hinged arm in an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the second hinge arm in an embodiment of this utility model. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See below Figures 1 to 4A hinged umbrella rib assembly includes a first hinge arm 1 and a second hinge arm 2, one end of which is rotatably connected to each other. The other end of both the first hinge arm 1 and the second hinge arm 2 is connected to an umbrella rib 3. Both the first hinge arm 1 and the second hinge arm 2 are provided with sewing holes 4 for positioning the sewing thread. With sewing holes 4 on the first hinge arm 1 and the second hinge arm 2, when the umbrella fabric is sewn to the umbrella rib 3, the fabric is fixed to the rib 3 by passing the sewing thread through the sewing holes 4. This eliminates the need to drill holes in the middle of the umbrella rib, meeting the requirement for positioning the fabric sewing thread without compromising the strength of the umbrella rib 3, and also reduces processing difficulty and cost.

[0022] In this embodiment, when the first hinge arm 1 and the second hinge arm 2 are unfolded, the stitch hole 4 is located on the same side of the two first hinge arms 1 and the second hinge arm 2.

[0023] In this embodiment, one end of the first hinge arm 1 is provided with two positioning walls 5 with a gap, and the two positioning walls 5 are provided with aligned first through holes 6. One end of the second hinge arm 2 extends between the two positioning walls 5, and the second hinge arm 2 located between the two positioning walls 5 is provided with a second through hole 7. The same hinge shaft 8 is inserted into the first through hole 6 and the second through hole 7. The sides of the two positioning walls 5 are provided with support parts 9 to abut against and support the second hinge arm 2. With this structure, when the umbrella is opened, the second hinge arm 2 is supported by the support parts 9, so that the umbrella ribs 3 can be stably supported.

[0024] In this embodiment, when the first hinge arm 1 and the second hinge arm 2 are extended to the point where the second hinge arm 2 abuts against the support portion 9, the umbrella support rib 3 connected to the second hinge arm 2 and the umbrella support rib 3 connected to the second hinge arm 2 are located on the same straight line.

[0025] In this embodiment, the position of the first through hole 6 is offset from the extension line of the umbrella rib 3 on the first hinge arm 1. Since the umbrella rib 3 of a large umbrella is thicker, this structure allows the first hinge arm 1 and the second hinge arm 2 to be folded to a parallel position when folded, avoiding interference between the first hinge arm 1 and the second hinge arm 2, which would cause the second hinge arm 2 to form a certain angle with the first hinge arm 1, causing the outer edge of the umbrella fabric to bulge outward.

[0026] In this embodiment, inclined support surfaces 10 extend from the inner sides of the two positioning walls 5, and an abutment slope 11 is provided on the second hinge arm 2. When the first hinge arm 1 and the second hinge arm 2 are folded until the abutment slope 11 abuts against the support surface 10, the umbrella ribs 3 on the first hinge arm 1 are parallel to the umbrella ribs 3 on the second hinge arm 2. This structure ensures that when the umbrella is folded, the umbrella ribs 3 on the first hinge arm 1 and the umbrella ribs 3 on the second hinge arm 2 are parallel when the abutment slope abuts against the support surface, making folding easier and resulting in a neater appearance after folding.

[0027] In this embodiment, the openings of the first hinge arm 1, including the two positioning walls 5 and the support portion 9, are provided with reinforcing ribs 12 extending outwards. This structure further strengthens the support strength of the support portion 9, preventing cracking due to factors such as wind during use.

[0028] In this embodiment, the first hinge arm 1 and the second hinge arm 2 are rotatably connected by a rivet passing through the first through hole 6 and the second through hole 7, with the rivet serving as the hinge shaft 8. This structure further facilitates the hinge connection between the first hinge arm 1 and the second hinge arm 2.

[0029] In this embodiment, the first hinge arm 1 and the second hinge arm 2 are both provided with a connection hole 13 at the end away from the hinge shaft 8, and the umbrella support 3 is inserted into the connection hole 13.

[0030] In this embodiment, both the first hinge arm 1 and the second hinge arm 2 are connected to the umbrella support 3 via secondary injection molding at the end of the umbrella support 3. This structure results in a higher connection strength between the first hinge arm 1 and the second hinge arm 2 and the umbrella support 3.

[0031] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A hinge assembly for umbrella ribs, characterized in that: It includes a first hinge arm (1) and a second hinge arm (2) that are rotatably connected at one end. The other end of the first hinge arm (1) and the second hinge arm (2) are both connected to umbrella support bones (3). The first hinge arm (1) and the second hinge arm (2) are both provided with suture holes (4) for positioning the sewing thread.

2. The umbrella rib hinge assembly as described in claim 1, characterized in that: When the first hinge arm (1) and the second hinge arm (2) are unfolded, the stitch hole (4) is located on the same side of the two first hinge arms (1) and the second hinge arm (2).

3. The umbrella rib hinge assembly as described in claim 1, characterized in that: The first hinge arm (1) has two positioning walls (5) with a gap at one end. The two positioning walls (5) are provided with aligned first through holes (6). The second hinge arm (2) extends into the space between the two positioning walls (5) and is provided with a second through hole (7) between the two positioning walls (5). The same hinge shaft (8) is inserted into the first through hole (6) and the second through hole (7). The sides of the two positioning walls (5) are provided with support parts (9) that abut against each other to support the second hinge arm (2).

4. The umbrella rib hinge assembly as described in claim 3, characterized in that: When the first hinge arm (1) and the second hinge arm (2) are extended to the point where the second hinge arm (2) abuts against the support part (9), the umbrella branch rib (3) connected to the second hinge arm (2) and the umbrella branch rib (3) connected to the second hinge arm (2) are on the same straight line.

5. The umbrella rib hinge assembly as described in claim 3, characterized in that: The position of the first through hole (6) is offset from the extension line of the umbrella support bone (3) on the first hinge arm (1).

6. The umbrella rib hinge assembly as described in claim 3, characterized in that: The inner sides of the two positioning walls (5) are provided with inclined support surfaces (10), and the second hinge arm (2) is provided with an abutting slope (11). When the first hinge arm (1) and the second hinge arm (2) are folded until the abutting slope (11) abuts against the support surface (10), the umbrella rib (3) on the first hinge arm (1) is parallel to the umbrella rib (3) on the second hinge arm (2).

7. The umbrella rib hinge assembly as described in claim 3, characterized in that: The first hinge arm (1) has two positioning walls (5) and the opening of the support part (9) provided with reinforcing ribs (12) extending to the outer wall side.

8. The umbrella rib hinge assembly as described in claim 3, characterized in that: The first hinge arm (1) and the second hinge arm (2) are rotatably connected by a rivet passing through the first through hole (6) and the second through hole (7), the rivet serving as the hinge shaft (8).

9. The umbrella rib hinge assembly as described in claim 1, characterized in that: Both the first hinge arm (1) and the second hinge arm (2) have a connecting hole (13) at the end away from the hinge axis (8), and the umbrella support (3) is inserted into the connecting hole (13).

10. The umbrella rib hinge assembly as described in claim 9, characterized in that: Both the first hinge arm (1) and the second hinge arm (2) are connected to the umbrella support bone (3) by secondary injection molding at the end of the umbrella support bone (3).

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