A hinge structure for a vehicle-mounted ceiling screen

Abstract

This utility model belongs to the field of hinge technology and discloses a hinge structure for a vehicle-mounted ceiling screen. It includes a connecting shaft, one end of which is fixedly connected to a positioning post. A movable frame, multiple spring pieces, and a nut are sequentially sleeved on the outside of the connecting shaft. The connecting shaft has symmetrically arranged first flat surfaces. The movable frame has connecting holes for the connecting shaft to pass through. Each of the multiple spring pieces has a first oblong hole that matches the connecting shaft with its first flat surface. The center of each spring piece protrudes to one side, and the multiple spring pieces are arranged alternately on opposite sides. This utility model, through the alternating arrangement of the multiple spring pieces, counteracts the bidirectional torque caused by vehicle vibration, preventing screen sway. The symmetrical arrangement of the first flat surfaces on the connecting shaft and the first oblong holes in the center of the spring pieces restrict circumferential rotation, ensuring uniform pressure transmission. The protrusion of the center of each spring piece provides non-linear damping, enabling hovering at any angle.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, in particular to a hinge structure for an in-vehicle ceiling screen. Background Art

[0002] As a core component of the in-vehicle entertainment system, the hinge structure of the in-vehicle ceiling screen needs to meet strict requirements such as multi-angle hovering, anti-vibration loosening, and compact installation at the same time. Traditional in-vehicle hinges often adopt a spring combined with a threaded locking structure, which has significant defects: when the vehicle bumps, the spring deforms laterally, resulting in screen shaking; hinges need to be customized for different vehicle models, increasing costs. Summary of the Invention

[0003] In order to overcome the technical defects existing in the prior art, the utility model provides a hinge structure for an in-vehicle ceiling screen.

[0004] The technical solution adopted by the utility model is: a hinge structure for an in-vehicle ceiling screen, including a connecting shaft, one end of the connecting shaft is fixedly connected with a positioning column, and an activity frame, a plurality of elastic pieces and a nut are sequentially sleeved outside the connecting shaft; the connecting shaft is symmetrically provided with a first flat surface, the activity frame is provided with a connecting hole for the connecting shaft to pass through, and each of the plurality of elastic pieces is provided with a first waist-shaped hole matching the connecting shaft with the first flat surface, the middle part of the elastic piece protrudes towards one side, and the plurality of elastic pieces are arranged alternately on the front and back sides, and the outer wall of the end of the connecting shaft far from the positioning column is provided with a locking external thread threadedly connected with the nut.

[0005] Preferably, flat gaskets are provided between the positioning column and the activity frame, between the activity frame and the elastic pieces, and between the elastic pieces and the nut.

[0006] Preferably, the middle parts of the plurality of flat gaskets are provided with second waist-shaped holes matching the connecting shaft with the first flat surface.

[0007] Preferably, the activity frame is rectangular, and first through holes are provided at the corners of the activity frame.

[0008] Preferably, an extension shaft is provided at the end of the positioning column far from the connecting shaft, second flat surfaces are symmetrically provided on the extension shaft, and gaps are symmetrically provided at the end of the positioning column connected to the extension shaft.

[0009] Preferably, the activity frame is in a "convex" shape, and three second through holes in a "pin" shape are provided on the activity frame.

[0010] Preferably, a connecting plate is provided at the end of the positioning column far from the connecting shaft, two third through holes are provided on the connecting plate, and a groove is provided inwards on the positioning column.

[0011] The beneficial effects of this utility model are: multiple spring sheets are arranged in an alternating positive and negative layout to offset the bidirectional torque during vehicle vibration and prevent screen sway. The first flat surface is symmetrically provided on the connecting shaft, and the first waist-shaped hole in the middle of the spring sheet can limit the circumferential rotation of the spring sheet and ensure uniform pressure transmission. The nonlinear damping is provided by the protrusion of the middle of the spring sheet, which can achieve hovering at any angle. Attached Figure Description

[0012] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0013] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0014] Figure 2 This is an exploded structural diagram of Embodiment 1 of the present invention;

[0015] Figure 3 This is a cross-sectional view of the structure of Embodiment 1 of this utility model;

[0016] Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0017] Figure 5 This is an exploded structural diagram of Embodiment 2 of the present invention;

[0018] Figure 6 This is a cross-sectional view of the structure of Embodiment 2 of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Connecting shaft; 2. Positioning pin; 3. Movable frame; 4. Spring piece; 5. Nut; 6. First flat surface; 7. Connecting hole; 8. First oblong hole; 9. Locking external thread; 10. Flat washer; 11. Second oblong hole; 12. First through hole; 13. Extension shaft; 14. Second flat surface; 15. Second through hole; 16. Connecting plate; 17. Third through hole; 18. Groove; 19. Notch. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0021] Example 1, such as Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a hinge structure for a vehicle-mounted ceiling screen, including a connecting shaft 1. One end of the connecting shaft 1 is fixedly connected to a positioning post 2. A movable frame 3, multiple spring pieces 4, and a nut 5 are sequentially sleeved on the outside of the connecting shaft 1. A first flat surface 6 is symmetrically provided on the connecting shaft 1. A connecting hole 7 is provided on the movable frame 3 for the connecting shaft 1 to pass through. Each of the multiple spring pieces 4 has a first waist-shaped hole 8 that matches the connecting shaft 1 with the first flat surface 6. The middle part of the spring piece 4 protrudes to one side, and the multiple spring pieces 4 are arranged alternately on the front and back sides. The outer wall of the end of the connecting shaft 1 away from the positioning post 2 is provided with a locking external thread 9 that is threaded to the nut 5. The multiple spring pieces 4 are arranged alternately on the front and back sides to offset the bidirectional torque during vehicle vibration and prevent screen sway. The first flat surface 6 is symmetrically provided on the connecting shaft 1, and the first waist-shaped hole 8 is provided in the middle of the spring piece 4 to limit the circumferential rotation of the spring piece 4 and ensure uniform pressure transmission. The protrusion of the middle part of the spring piece 4 provides non-linear damping, which can achieve hovering at any angle.

[0022] Flat washers 10 are provided between the positioning post 2 and the movable frame 3, between the movable frame 3 and the spring piece 4, and between the spring piece 4 and the nut 5. Multiple flat washers 10 are arranged in layers to isolate the movable frame 3 and the spring piece 4, reduce frictional wear, and extend the service life of the hinge.

[0023] Each of the multiple flat gaskets 10 has a second oblong hole 11 in the middle that matches the connecting shaft 1 with the first flat surface 6. The second oblong hole 11 matches the connecting shaft 1 with the first flat surface 6, which can prevent the flat gasket 10 from rotating relative to the connecting shaft 1 and improve the overall structure.

[0024] The movable frame 3 is rectangular, and each corner of the movable frame 3 is provided with a first through hole 12. The end of the positioning post 2 away from the connecting shaft 1 is provided with an extension shaft 13. The extension shaft 13 is symmetrically provided with a second flat surface 14. The end of the positioning post 2 connected to the extension shaft 13 is symmetrically provided with a notch 19. Through the setting of the rectangular movable frame 3 and the extension shaft 13, the setting of the first through hole 12 can be adapted to standard car roof bolts. The setting of the second flat surface 14 on the extension shaft 13 is convenient for tool clamping and fixing. The setting of the notch 19 releases the installation stress and avoids cracking of the positioning post 2.

[0025] The extension shaft 13 is inserted into a pre-drilled hole in the roof, and the second flat surface 14 is secured with a wrench, making it suitable for lightweight screens.

[0026] Example 2, as Figure 4 , Figure 5 and Figure 6As shown, the difference technical feature from Embodiment 1 is that the movable frame 3 is set to be "convex" - shaped. Three second through - holes 15 in a "pin" - shaped arrangement are opened on the movable frame 3. A connecting plate 16 is provided at one end of the positioning column 2 far from the connecting shaft 1. Two third through - holes 17 are opened on the connecting plate 16. An inward - recessed groove 18 is opened on the positioning column 2. Through the convex - shaped movable frame 3 and the connecting plate 16, the "pin" - shaped through - holes disperse the weight of the screen. The setting of the two third through - holes 17 on the connecting plate 16 enhances the anti - torsional property. The setting of the groove 18 reduces the weight of the positioning column 2 and lowers the material cost.

[0027] The connecting plate 16 is fixed by bolts passing through the third through - holes 17. The groove 18 plays a role in weight reduction and is suitable for heavy - duty screens.

[0028] Meanwhile, the content not described in detail in this specification belongs to the well - known prior art in the art.

[0029] During operation, during assembly, the connecting shaft 1 passes through a flat washer 10, the movable frame 3, a flat washer 10, four elastic pieces 4 distributed alternately on the front and back, and a flat washer 10 in sequence, and the end is locked with a nut 5. The elastic pieces 4 are distributed alternately on the front and back. When the nut 5 is tightened, the convex part of the elastic piece 4 is flattened, generating an axial elastic force; for hovering adjustment, when the screen is rotated, the movable frame 3 drives the connecting shaft 1 to rotate. The first flat surface 6 matches the first waist - shaped hole 8 and the second waist - shaped hole 11, restricting the rotation of the elastic piece 4. Multiple elastic pieces 4 are deformed by shear force, and their restoring force balances the gravitational moment of the screen, realizing stepless hovering. When the vehicle jolts, multiple groups of elastic pieces 4 distributed alternately on the front and back resist the impact force bidirectionally. The flat washer 10 reduces the friction between metals. The first flat surface 6 and the second flat surface 14 can prevent axial movement.

[0030] Those of ordinary skill in the art can understand that the above - mentioned embodiments are specific embodiments for implementing the present invention. In actual applications, various changes can be made in form and details without departing from the spirit and scope of the present invention.

Claims

1. A hinge structure for a vehicle-mounted ceiling-mounted screen, characterized in that: It includes a connecting shaft (1), one end of the connecting shaft (1) is fixedly connected with a positioning column (2), and an activity frame (3), a plurality of elastic pieces (4) and a nut (5) are sequentially sleeved on the outer part of the connecting shaft (1); The connecting shaft (1) is symmetrically provided with a first flat surface (6), the activity frame (3) is provided with a connecting hole (7) for the connecting shaft (1) to pass through, each of the plurality of elastic pieces (4) is provided with a first waist-shaped hole (8) matching the connecting shaft (1) with the first flat surface (6), the middle part of the elastic piece (4) bulges towards one side, and the plurality of elastic pieces (4) are arranged alternately on the front and back sides. The outer wall of one end of the connecting shaft (1) far from the positioning column (2) is provided with a locking external thread (9) threadedly connected with the nut (5).

2. The hinge structure for a vehicle-mounted ceiling-mounted screen according to claim 1, characterized in that: Flat gaskets (10) are arranged between the positioning column (2) and the activity frame (3), between the activity frame (3) and the elastic pieces (4), and between the elastic pieces (4) and the nut (5).

3. The hinge structure for a vehicle-mounted ceiling-mounted screen according to claim 2, characterized in that: The middle parts of the plurality of flat gaskets (10) are all provided with second waist-shaped holes (11) matching the connecting shaft (1) with the first flat surface (6).

4. The hinge structure for a vehicle-mounted ceiling-mounted screen according to claim 1, characterized in that: The activity frame (3) is set as a rectangle, and first through holes (12) are opened at each corner of the activity frame (3).

5. A hinge structure for a vehicle-mounted ceiling-mounted screen according to claim 4, characterized in that: One end of the positioning column (2) far from the connecting shaft (1) is provided with an extension shaft (13), the extension shaft (13) is symmetrically provided with a second flat surface (14), and symmetrical notches (19) are arranged at one end of the positioning column (2) connected with the extension shaft (13).

6. The hinge structure for a vehicle-mounted ceiling-mounted screen according to claim 1, characterized in that: The activity frame (3) is set as a "convex" shape, and three second through holes (15) in a "pin" shape are opened on the activity frame (3).

7. A hinge structure for a vehicle-mounted ceiling-mounted screen according to claim 6, characterized in that: One end of the positioning column (2) far from the connecting shaft (1) is provided with a connecting plate (16), two third through holes (17) are opened on the connecting plate (16), and a recessed groove (18) is opened on the positioning column (2).

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