Flip cover damping hinge

Abstract

This utility model relates to the field of damping hinge technology, specifically a flip-top damping hinge, comprising: a rotating connecting plate, several sets of Y-shaped leaf springs, a cotter pin, a spindle, a first connecting plate, and a second connecting plate. The rotating connecting plate has a through-type assembly cavity and a cotter pin positioning groove. The several sets of Y-shaped leaf springs are disposed within the assembly cavity, each with an assembly hole. A first mating surface is provided on the assembly hole. The cotter pin is inserted into the cotter pin positioning groove to limit the movement of the Y-shaped leaf springs. The spindle includes a spindle body and assembly sections at both ends of the spindle body. A second mating surface, corresponding to the first mating surface, is provided on the spindle body. The spindle body is inserted into the assembly hole. The first connecting plate and the second connecting plate are rotatably mounted on the assembly sections. The friction pair design between the spindle and the Y-shaped leaf springs in this utility model achieves precise control of the damping force through dynamic changes in the interference fit.

Description

Technical Field

[0001] This utility model relates to the field of damping hinge technology, and specifically to a flip-top damping hinge. Background Technology

[0002] Hinges are commonly used hardware components in existing technology, with a wide range of applications in automobiles and other fields. The quality of a hinge determines the connection performance between two objects connected by the hinge in automobiles and other equipment, enabling the rotational connection between the two objects during use.

[0003] Taking a car seat tray table as an example, when not in use, the tray table should be stored in the storage space under the base of the side armrest of the seat. The side armrest should have a flip-open and close function. When the tray table is needed, flip open the side armrest, take the tray table out of the storage space and unfold it, and then close the side armrest.

[0004] The existing small table hinges have the following problems: 1. The hinge has no damping function, resulting in a loose and unpleasant feel during use. If used in a car, it may cause abnormal noises on bumpy roads. 2. The hinge closing process requires manual operation throughout, which cannot create a smooth "touch and close" experience, resulting in a poor user experience. Utility Model Content

[0005] This invention provides a flip-top damping hinge to address the problems of existing technologies.

[0006] The objective of this utility model can be achieved through the following technical solution: A flip-top damping hinge includes: a rotating connecting plate, several sets of Y-shaped leaf springs, a cotter pin, a spindle, a first connecting plate, and a second connecting plate. The rotating connecting plate has a through-hole assembly cavity and a cotter pin positioning groove. Several sets of Y-shaped leaf springs are arranged in the assembly cavity and have assembly holes inside. The assembly holes have a first mating surface. The cotter pin is inserted into the cotter pin positioning groove to limit the Y-shaped leaf springs. The spindle includes a spindle body and assembly sections arranged at both ends of the spindle body. The spindle body has a second mating surface corresponding to the first mating surface. The spindle body is inserted into the assembly hole. The first connecting plate and the second connecting plate are rotatably arranged on the assembly sections.

[0007] In a further improvement, a limiting ring groove is provided on the side of the connecting plate two near the mandrel, and an arc-shaped limiting block is provided on the side of the rotating connecting plate near the connecting plate two, with the arc-shaped limiting block rotatably disposed within the limiting ring groove.

[0008] In a further improvement, the rotating connecting plate is provided with a mounting groove on the side near the connecting plate one, and a plug is provided in the mounting groove.

[0009] In a further improvement, the lower end of the Y-shaped leaf spring is provided with an arc-shaped clearance groove, which is correspondingly provided with the cotter pin.

[0010] In a further improvement, the first connecting plate is provided with an assembly hole one on the side near the rotating connecting plate, and the second connecting plate is provided with an assembly hole two on the side near the rotating connecting plate. The assembly hole one and the assembly hole two are respectively provided corresponding to the assembly section.

[0011] As a further improvement, the rotating connecting plate is provided with a through mounting hole and a positioning hole.

[0012] In a further improvement, the mounting holes are arranged in two symmetrical sets, and the positioning holes are located in the middle of one of the two sets of mounting holes.

[0013] As a further improvement, the first connecting plate is provided with a second mounting hole, and the second connecting plate is provided with a third mounting hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The friction pair design of the spindle and Y-type leaf spring in this utility model achieves precise control of damping force through dynamic changes in interference: when the side armrest is opened, the initial damping is small and the mid-section damping is stable, which makes it easy to lift and gives the operation a "solid feel"; when closed, the elastic restoring force of the Y-type leaf spring drives the mating surface to automatically align, forming an "automatic suction" effect, so that the armrest can be closed with a gentle force, without any jamming or impact, and the operation is smooth. 2. The arc-shaped limiting block and the limiting ring groove of this utility model form a rigid mechanical limit, which strictly constrains the maximum opening and closing angle of the side handrail. When the handrail is opened to the limit position, the limiting block and the end step of the ring groove are in contact, which directly prevents the Y-shaped leaf spring from continuing to deform, avoids irreversible plastic damage to the leaf spring due to excessive angle rotation, and controls the deformation of the leaf spring within the elastic safety range from the mechanical structure level, thus extending the service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the present invention; Figure 3 This is a schematic diagram of the rotating connecting plate of this utility model; Figure 4 This is a structural schematic diagram of the rotating connecting plate of this utility model from another perspective; Figure 5 Top view of the Y-type leaf spring of this utility model; Figure 6 This is a schematic diagram of the mandrel structure of this utility model; Figure 7 This is a schematic diagram of the connecting plate two of this utility model; Figure 8 This is a schematic diagram of the connecting plate structure of this utility model; Figure 9 This is a partial cross-sectional view of the damping hinge when the side armrest of this utility model is closed; Figure 10 This is a partial cross-sectional view of the damping hinge when the side armrest of this utility model is opened.

[0016] In the diagram, 101 is a rotating connecting plate; 101a is an assembly cavity; 101b is a cotter pin positioning groove; 101c is an arc-shaped limiting block; 101d is a mounting groove; 101f is mounting hole one; 101g is a positioning hole; 102 is a Y-type leaf spring; 102a is an assembly hole; 102b is a mating surface one; 102c is an arc-shaped clearance groove; 103 is a cotter pin; 104 is a plug; 105 is a mandrel; 105a is a mandrel body; 105b is an assembly section; 105c is a mating surface two; 106 is a connecting plate one; 106a is an assembly hole one; 106b is a mounting hole two; 107 is a connecting plate two; 107a is a limiting ring groove; 107b is an assembly hole two; 107c is a mounting hole three. Detailed Implementation

[0017] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The following is a description of the embodiments and appendices. Figures 1-10 The technical solution of this utility model will be further described below.

[0020] Example 1 A flip-top damping hinge includes: a rotating connecting plate 101, several sets of Y-shaped leaf springs 102, a cotter pin 103, a spindle 105, a first connecting plate 106, and a second connecting plate 107. The rotating connecting plate 101 has a through-type assembly cavity 101a and a cotter pin positioning groove 101b. The several sets of Y-shaped leaf springs 102 are disposed within the assembly cavity 101a and have assembly holes 102a inside. A mating surface 102b is provided on the assembly hole 102a. The cotter pin 103 is inserted into the hinge... The cotter pin positioning groove 101b limits the Y-type leaf spring 102. The spindle 105 includes a spindle body 105a and assembly sections 105b disposed at both ends of the spindle body 105a. The spindle body 105a is provided with a second mating surface 105c corresponding to the first mating surface 102b. The spindle body 105a is inserted into the assembly hole 102a. The first connecting plate 106 and the second connecting plate 107 are respectively rotatably disposed on the assembly section 105b.

[0021] like Figures 1-10 As shown, taking the side armrest of a car seat as an example, the specific assembly method of this utility model is as follows: First, stack several sets of Y-shaped leaf springs 102 and install them into the assembly cavity 101a of the rotating connecting plate 101, so that the positioning plane of the leaf spring is tightly attached to the inner wall of the assembly cavity to eliminate circumferential gaps; align the cotter pin mounting holes of the rotating connecting plate and the leaf spring, insert the cotter pin 103, and use its elastic support shape to fix the leaf spring axially to ensure that the leaf spring does not move within the assembly cavity. Next, align the mandrel body 105a with the mounting hole 102a of the Y-type leaf spring, so that the mating surface 105c of the mandrel and the mating surface 102b of the leaf spring are precisely aligned and fitted. Slowly push the mandrel in until the mounting sections 105b at both ends are exposed in the mounting cavity, thus completing the initial assembly of the friction pair. Next, align the interference fit holes of the mandrels of connecting plate 106 and connecting plate 207 with the assembly sections 105b at both ends of the mandrel, apply axial pressure to achieve interference fit, fix connecting plate 106 to the car seat frame, and connect connecting plate 207 to the rotating end of the side armrest to form a linkage structure between the hinge, armrest and seat.

[0022] In actual use, the opening and closing action of the rotating connecting plate 101 is essentially the relative rotation of the spindle body 105a of the spindle 105 and the mounting hole 102a of the Y-type leaf spring 102 along the axis. The slight interference between the two causes the spindle and the Y-type damping leaf spring with elastic characteristics to form a friction pair. The frictional resistance generated during rotation is converted into the damping force of the mechanism, making the opening and closing operation of the side armrest smoother and more tactile. When the side armrest is opened, rotating the connecting plate 101 causes the Y-shaped leaf spring 102 to rotate around the axis of the spindle 105, as... Figure 9 As shown, the mating surface 102b of the Y-type leaf spring 102 and the mating surface 105c of the spindle 105 gradually misalign, and the interference fit gradually increases accordingly; until complete misalignment, the interference fit remains at its highest value (as shown). Figure 10 As shown in the diagram, the damping torque remains constant as the rotation continues. During this process, the damping torque is relatively small in the initial stage of opening the side armrest, making it easy to lift. Once the mating surfaces are completely misaligned, the damping torque tends to stabilize, ensuring stable resistance during the opening process. During the closing process of the side armrest, the rotating connecting plate 101 drives the Y-shaped leaf spring 102 to rotate in the opposite direction around the axis of the spindle 105. The mating surface 102b of the Y-shaped leaf spring 102 and the mating surface 105c of the spindle 105 gradually approach each other, and the interference fit gradually decreases (e.g., Figure 10 (As shown). Due to the elastic characteristics of the Y-type leaf spring 102, when the two sides are about to align, they automatically and precisely align under the action of elastic pressure (at this time, the interference fit between the hole and shaft is minimal, such as...). Figure 9 As shown in the figure, the side armrest automatically closes under the drive of the reset force, completing the entire operation cycle. In a further preferred embodiment, the connecting plate 107 is provided with a limiting annular groove 107a on the side near the spindle 105, and the rotating connecting plate 101 is provided with an arc-shaped limiting block 101c on the side near the connecting plate 107, and the arc-shaped limiting block 101c is rotatably disposed in the limiting annular groove 107a.

[0023] Specifically, during assembly, after the mandrel 105 and the connecting plate 107 have completed the interference fit, the arc-shaped limiting block 101c of the rotating connecting plate 101 is precisely embedded in the limiting ring groove 107a of the connecting plate 107, and the two rotate smoothly relative to each other without jamming. When the side handrail is opened, the rotating connecting plate 101 drives the arc-shaped limiting block 101c to slide along the inner wall of the limiting ring groove 107a, and the two ends of the ring groove form a physical limit: when the handrail is opened to the maximum use angle, one end of the arc-shaped limiting block 101c is in contact with the end step of the ring groove, preventing further rotation and avoiding the failure of the Y-type leaf spring 102 due to excessive deformation; when the handrail is closed to 0°, the other end of the limiting block contacts the other end step of the ring groove, ensuring that the handrail is accurately reset.

[0024] As a further preferred embodiment, the rotating connecting plate 101 is provided with a mounting groove 101d on the side near the connecting plate 106, and a plug 104 is provided in the mounting groove 101d.

[0025] Specifically, during assembly, after the Y-type leaf spring 102, spindle 105 and rotating connecting plate 101 are initially assembled, the plug 104 is aligned with the mounting groove 101d and gently pressed to make it fully embedded in the groove. At this time, the end face of the plug is flush with the outer surface of the rotating connecting plate 101. The plug 104 and the mounting groove 101d form a closed structure: on the one hand, the plug can prevent external dust, moisture and debris from entering the assembly cavity 101a, and avoid the friction pair between the Y-type leaf spring 102 and the spindle 105 from being worn or stuck due to contamination; on the other hand, the plug provides axial support to the end of the Y-type leaf spring 102 through its own rigidity, and together with the cotter pin 103, it forms a bidirectional limit to prevent the leaf spring from axially loosening during high-frequency rotation.

[0026] As a further preferred embodiment, the lower end of the Y-shaped leaf spring 102 is provided with an arc-shaped clearance groove 102c, which is correspondingly provided with the cotter pin 103.

[0027] As a further preferred embodiment, the connecting plate 106 is provided with an assembly hole 106a on the side near the rotating connecting plate 101, and the connecting plate 107 is provided with an assembly hole 107b on the side near the rotating connecting plate 101. The assembly hole 106a and the assembly hole 107b are respectively provided corresponding to the assembly section 105b.

[0028] Specifically, during assembly, the stacked Y-shaped leaf springs 102 are inserted into the assembly cavity 101a of the rotating connecting plate 101, so that the arc-shaped clearance groove 102c of each set of leaf springs faces the cotter pin positioning groove 101b. After the cotter pin 103 is inserted, the elastic support shape of the cotter pin is precisely embedded in the arc-shaped clearance groove 102c, which not only avoids rigid contact between the cotter pin and the edge of the leaf spring, but also forms a circumferential constraint on the cotter pin through the groove wall, preventing the cotter pin from radially shifting due to vibration. When the Y-type leaf spring 102 rotates with the rotating connecting plate 101, the arc-shaped clearance groove 102c and the cotter pin 103 always maintain a corresponding relationship. During the rotation of the leaf spring, the groove wall and the cotter pin have no frictional contact, ensuring that the damping force is generated only by the friction pair between the leaf spring and the spindle and is not affected by additional interference.

[0029] As a further preferred embodiment, the rotating connecting plate 101 is provided with a mounting hole 101f and a positioning hole 101g, the mounting holes 101f are arranged in two symmetrical sets, and the positioning hole 101g is located in the middle of the two sets of mounting holes 101f.

[0030] Specifically, during assembly, the positioning pin on the side armrest is first inserted into the positioning hole 101g to quickly align the rotating connecting plate 101 with the side armrest, and then bolted through the two sets of mounting holes 101f to ensure that the connecting surfaces fit tightly.

[0031] As a further preferred embodiment, the connecting plate 106 is provided with a second mounting hole 106b, and the connecting plate 107 is provided with a third mounting hole 107c.

[0032] Specifically, during assembly, connecting plate 106 is rigidly connected to the seat fixing bracket through mounting hole 106b and connecting plate 107 through mounting hole 107c, ensuring the installation stability of spindle 105. Rotating connecting plate 101 is then pre-positioned with the side armrest through positioning hole 101g, and finally fixed with bolts passing through two sets of mounting holes 101f.

[0033] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A flip cover damper hinge, characterized by, include: The assembly includes a rotating connecting plate, several sets of Y-shaped leaf springs, cotter pins, a mandrel, a first connecting plate, and a second connecting plate. The rotating connecting plate has a through-type assembly cavity and a cotter pin positioning groove. Several sets of Y-shaped leaf springs are disposed within the assembly cavity, each with an assembly hole. A first mating surface is provided on the assembly hole. The cotter pin is inserted into the cotter pin positioning groove to limit the movement of the Y-shaped leaf springs. The mandrel includes a mandrel body and assembly sections at both ends of the mandrel body. A second mating surface, corresponding to the first mating surface, is provided on the mandrel body. The mandrel body is inserted into the assembly hole. The first connecting plate and the second connecting plate are rotatably mounted on the assembly sections.

2. The flip-damper hinge according to claim 1, wherein The second connecting plate is provided with a limiting ring groove on the side near the mandrel, and the rotating connecting plate is provided with an arc-shaped limiting block on the side near the second connecting plate. The arc-shaped limiting block is rotatably disposed in the limiting ring groove.

3. The flip-damper hinge according to claim 1, wherein, The rotating connecting plate has an installation groove on the side near the connecting plate one, and a plug is provided in the installation groove.

4. The flip-damper hinge of claim 1, wherein, The lower end of the Y-shaped leaf spring is provided with an arc-shaped clearance groove, which is correspondingly provided with the cotter pin.

5. The flip-damper hinge of claim 1, wherein, The first connecting plate is provided with an assembly hole one on the side near the rotating connecting plate, and the second connecting plate is provided with an assembly hole two on the side near the rotating connecting plate. The first assembly hole and the second assembly hole are respectively provided with the assembly section.

6. The flip-damper hinge of claim 1, wherein, The rotating connecting plate is provided with a through mounting hole and a positioning hole.

7. A flip-damper hinge according to claim 6, wherein The mounting holes are arranged symmetrically in two sets, and the positioning holes are located in the middle of one set of the mounting holes.

8. The flip-damper hinge of claim 1, wherein, The first connecting plate is provided with a second mounting hole, and the second connecting plate is provided with a third mounting hole.

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