Micro-open handrail hover hinge

Abstract

The utility model discloses a kind of micro-open handrails hover hinges, belong to handrail field.The utility model of a kind of micro-open handrails hover hinges, including upper hinge, lower hinge and metal shaft, characterized in that, the metal shaft is through upper hinge and lower hinge, the first friction plate is installed in the end of metal shaft close to upper hinge, spring is installed on the metal shaft on the side of first friction plate away from upper hinge, the second friction plate is installed on the side of metal shaft on spring away from first friction plate, second metal gasket, buffer rubber sleeve and first metal gasket are installed in order on the side of second friction plate away from spring of metal shaft, and the end of metal shaft is fixed by nut.The utility model solves the single function of existing hinge structure, cannot satisfy the increasingly changing market demand.

Description

Technical Field

[0001] This utility model relates to the field of handrails, specifically a micro-opening handrail suspension hinge. Background Technology

[0002] Armrests, as important support components, are widely used in various seating furniture such as office chairs, sofas, and car seats. In modern furniture design, the functionality and user experience of armrests are receiving increasing attention. Traditional armrest hinge structures are mainly divided into two types: one is an automatic spring-loaded hinge using a spring structure, and the other is a hovering hinge using friction plates.

[0003] The existing hinge structure has a single function and cannot meet the ever-changing market demands. Utility Model Content

[0004] The purpose of this utility model is to provide a micro-opening handrail suspension hinge with dual functions of automatic pop-up and suspension, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a micro-opening handrail suspension hinge, comprising an upper hinge, a lower hinge, and a metal shaft, characterized in that the metal shaft passes through the upper hinge and the lower hinge, a first friction plate is installed at the end of the metal shaft near the upper hinge, a spring is installed on the metal shaft on the side of the first friction plate away from the upper hinge, a second friction plate is installed on the metal shaft on the side of the spring away from the first friction plate, a second metal washer, a buffer sleeve, and a first metal washer are sequentially installed on the side of the metal shaft on the side of the second friction plate away from the spring, and the end of the metal shaft is fixed by a nut.

[0006] Furthermore, the upper hinge is provided with first connecting pieces on both sides, and the first connecting pieces are integrally formed with the upper hinge.

[0007] Furthermore, the first connecting piece has a first bolt hole, which is integrally formed with the first connecting piece.

[0008] Furthermore, second connecting pieces are provided on both sides of the lower hinge, and the lower hinge and the second connecting pieces are integrally formed.

[0009] Furthermore, a second bolt hole is provided on the second connecting piece.

[0010] Furthermore, reinforcing ribs are installed on both sides of the lower hinge near the second connecting piece, and the reinforcing ribs are welded to the lower hinge.

[0011] Furthermore, the spring is a helical spring, which is disposed on one side of the first friction plate and sleeved on the metal shaft.

[0012] Furthermore, the buffer sleeves are respectively disposed at the lower ends of the first metal pads on both sides. The buffer sleeves can contact the hinge after folding. The buffer sleeves effectively reduce the impact and noise during hinge movement and improve the product's service life.

[0013] Furthermore, it includes a plastic protective sleeve, which is fitted over the outside of the hinge and is sleeved with the hinge.

[0014] Furthermore, the upper hinge is connected to the metal shaft via a keyway structure, and the spring force is greater than the friction force of the first friction plate and the second friction plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides connecting pieces with bolt holes on both sides of the upper and lower hinges, enabling the hinges to be securely installed on the armrests and seat frames, making installation convenient and reliable.

[0016] 2. Through the combination of spring and friction plate, the handrail can automatically spring up within the range of 0-10 degrees and hover at any position within the range of 10-88 degrees, greatly improving the convenience of use. By adjusting the preload of the spring and the friction coefficient of the friction plate, the angle of automatic springing and the force of hovering can be flexibly adjusted to meet the needs of different users.

[0017] 3. The dual friction plate design enhances the stability and reliability of the suspension, ensuring that the handrail will not slip unexpectedly during use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall external structure of this utility model; Figure 2 This is a schematic diagram of the overall bottom view of the present invention; Figure 3 This is a schematic diagram of the overall explosive decomposition structure of this utility model; Figure 4 This is a schematic diagram of the overall left-side structure of this utility model.

[0019] In the diagram: 1. Upper hinge; 101. First connecting piece; 102. First bolt hole; 2. Plastic protective sleeve; 3. Nut; 4. First metal washer; 5. Buffer sleeve; 6. Second metal washer; 7. Second friction plate; 8. Spring; 9. Lower hinge; 901. Second connecting piece; 902. Second bolt hole; 10. First friction plate; 11. Metal shaft; 12. Reinforcing rib. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To address the problem that existing hinge structures have limited functionality and cannot meet the ever-changing market demands, this embodiment provides the following technical solution: Example 1: As Figures 1-4 As shown, the structure includes an upper hinge 1, a lower hinge 9, and a metal shaft 11, which passes through both the upper hinge 1 and the lower hinge 9. A first friction plate 10 is mounted on the end of the metal shaft 11 closest to the upper hinge 1. A spring 8 is mounted on the metal shaft 11 on the side of the first friction plate 10 furthest from the upper hinge 1. A second friction plate 7 is mounted on the metal shaft 11 on the side of the metal shaft 11 furthest from the first friction plate 10. A second metal washer 6, a buffer sleeve 5, and a first metal washer 4 are sequentially mounted on the side of the metal shaft 11 furthest from the spring 8. The end of the metal shaft 11 is secured by a nut 3. First connecting plates 101 are provided on both sides of the upper hinge 1, integrally formed with the upper hinge 1, and have first bolt holes 102. Second connecting plates 901 are provided on both sides of the lower hinge 9, integrally formed with the lower hinge 9, and have second bolt holes 902. Reinforcing ribs 12 are installed on both sides of the lower hinge 9 near the second connecting piece 901, and the reinforcing ribs 12 are welded to the lower hinge 9. A plastic protective sleeve 2 is also included, which is fitted over the outside of the hinge.

[0022] When in operation, with the handrail closed at 0 degrees, the elastic force of spring 8 is greater than the frictional force of the first friction plate 10 and the second friction plate 7. Spring 8 drives the metal shaft 11 to rotate. Since the upper hinge 1 is connected to the metal shaft 11 through a keyway structure, the upper hinge 1 rotates accordingly, realizing the automatic spring-up of the handrail. When the opening angle reaches 10 degrees, the spring force and frictional force reach equilibrium, and the handrail stops moving, achieving a hovering position. Within the range of 10 degrees to 88 degrees, if the user manually opens the handrail, spring 8 loses its elastic force, and the frictional force between the upper hinge 1 and the friction plate provides damping, allowing the handrail to hover at any position. When the angle reaches 88 degrees, due to the stop design, the upper hinge 1 stops moving.

[0023] Please refer to Example 2 Figure 1 - Figure 4Based on Embodiment 1, reinforcing ribs 12 are added to the first connecting piece 101 and the second connecting piece 901 to enhance the strength of the connecting pieces. In addition, the buffer sleeve 5 is made of wear-resistant rubber, the plastic protective sleeve 2 is made of ABS engineering plastic, the first metal gasket 4 and the second metal gasket 6 are made of stainless steel, the spring 8 is a high-carbon steel helical spring, and the first friction plate 10 and the second friction plate 7 are made of composite friction material.

[0024] During operation, its working mechanism is the same as in Embodiment 1. The reinforcing rib 12 improves the overall structural strength of the hinge, preventing deformation of the connecting piece during long-term use. The buffer sleeve 5 reduces impact and noise during hinge movement, while the plastic protective sleeve 2 protects internal components from dust and damage. The use of wear-resistant materials extends the hinge's lifespan, making it suitable for high-frequency use scenarios.

[0025] The working principle summarized above is as follows: This utility model achieves the automatic pop-up and hovering functions of the handrail through the combination of spring 8 and friction plates, first friction plate 10 and second friction plate 7. Within the 0-10 degree range, the spring force drives automatic pop-up; within the 10-88 degree range, the friction plates provide damping to achieve hovering. The connecting plates, first connecting plate 101 and second connecting plate 901, are conveniently installed via bolt holes, first bolt hole 102 and second bolt hole 902, and the reinforcing rib 12 enhances durability. The buffer sleeve 5 and plastic protective sleeve 2 improve user comfort and lifespan.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A micro-open handrail hover hinge comprising an upper hinge (1), a lower hinge (9) and a metal shaft (11), characterized in that, The metal shaft (11) passes through the upper hinge (1) and the lower hinge (9). A first friction plate (10) is installed on the end of the metal shaft (11) near the upper hinge (1). A spring (8) is installed on the side of the metal shaft (11) away from the upper hinge (1) from the first friction plate (10). A second friction plate (7) is installed on the side of the metal shaft (11) away from the first friction plate (10) from the spring (8). A second metal washer (6), a buffer sleeve (5) and a first metal washer (4) are installed sequentially on the side of the metal shaft (11) away from the spring (8) from the second friction plate (7). The end of the metal shaft (11) is fixed by a nut (3).

2. A micro-opening handrail hover hinge according to claim 1, characterized in that: The upper hinge (1) is provided with first connecting pieces (101) on both sides, and the first connecting pieces (101) and the upper hinge (1) are integrally formed.

3. A micro-opening handrail hover hinge according to claim 2, characterized in that: The first connecting piece (101) has a first bolt hole (102), and the bolt hole (102) and the first connecting piece (101) are integrally formed.

4. A micro-opening handrail hover hinge according to claim 3, characterized in that: The lower hinge (9) is provided with second connecting pieces (901) on both sides, and the lower hinge (9) and the second connecting pieces (901) are integrally formed.

5. A micro-opening handrail hover hinge according to claim 4, characterized in that: The second connecting piece (901) has a second bolt hole (902).

6. A micro-opening handrail hover hinge according to claim 5, characterized in that: The lower hinge (9) has reinforcing ribs (12) installed on both sides near the second connecting piece (901), and the reinforcing ribs (12) are welded to the lower hinge (9).

7. A micro-opening handrail hover hinge according to claim 1, characterized in that: The spring (8) is a helical spring, which is disposed on one side of the first friction plate (10) and sleeved on the metal shaft (11).

8. A micro-opening handrail hover hinge according to claim 1, characterized in that: The buffer sleeves (5) are respectively set at the lower ends of the first metal pads (4) on both sides, and the buffer sleeves (5) can contact the hinge after folding.

9. A micro-opening handrail hover hinge according to claim 1, characterized in that: It also includes a plastic protective sleeve (2), which is fitted over the outside of the hinge and is connected to the hinge.

10. A micro-opening handrail hover hinge according to claim 1, characterized in that: The upper hinge (1) is connected to the metal shaft (11) through a keyway structure, and the elastic force of the spring (8) is greater than the friction force of the first friction plate (10) and the second friction plate (7).

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