Seat armrest small table plate overturning damping mechanism
By designing the flip damping mechanism of rotary arms, limiting protrusions, limit pins, dampers and return springs on the seat armrests, the tilt and noise problems of small table plates are solved, stable expansion and slow fall are achieved, and the equipment is extended service life.
Patent Information
- Application Number
- CN202421779755.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The existing seat armrest table plate is prone to tilt when opened and falls, and produces greater noise and vibration when lifted and played back, reducing the service life of the equipment.
A flip damping mechanism including a rotating arm, a limiting projection, a limiting pin, a damper and a return spring is designed to stabilize the expansion position of the small table plate through the front and rear limiting components and dampers, and limit the rotation speed of the rotating arm. Ensure the smooth expansion and slow fall of the small table plate.
Effectively prevent the small table from tipping back and forth, reduce noise and vibration, extend the service life of the equipment, and provide a good user experience.
Smart Images
Figure CN222329541U_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of seats, and in particular relates to a seat armrest small table flip damping mechanism. Background Art
[0002] At present, the small table on the armrest of the seat used in airplanes or vehicles is opened when in use, and the small table is flipped up in advance and rotated horizontally to put the small table in the open use position. The disadvantages are: first, when the small table is flipped up in advance, there is no front limit component, so the small table may tilt forward when placed horizontally; second, after the small table is placed horizontally, there is no rear limit component, so the small table may tilt backward when placed horizontally; third, the lifting and lowering of the small table are both hinged with a single pin shaft, resulting in the lifting or putting back of the small table under the action of gravity, especially when the small table is put back, it falls back quickly, causing the connection parts to hit and vibrate, which not only generates a lot of noise but also reduces the service life of the equipment. Summary of the invention
[0003] The object of the present invention is to provide a seat armrest small table flip damping mechanism with a small table having a stable unfolding position and a gentle falling back action.
[0004] The object of the present invention is to solve like this:
[0005] A seat armrest and small table flip damping mechanism comprises a seat armrest with a table board assembly storage cavity, a cover plate hinged on the upper opening of the seat armrest storage cavity, and a table board assembly hinged on the front upper corner of the seat armrest and rotatable to enter and exit the seat armrest storage cavity, wherein one long side of the cover plate is hingedly connected to the seat armrest through a hinge joint, and the table board assembly comprises a rotating arm, the front end of the rotating arm is hinged on the front upper corner of the seat armrest, and the rear end is hinged on the hinged part of the small table board, and the seat armrest is provided with a front limit assembly for limiting the rotating arm from tipping forward after the table board assembly is opened, and a rear limit assembly for limiting the rotating arm from tipping backward.
[0006] As a further optimization of the above technical solution, the front limit assembly includes a limit protrusion arranged on the rotating arm and a limit pin arranged on the seat armrest.
[0007] As a further optimization of the above technical solution, there are two limit protrusions, which are symmetrically arranged on the rotating arms on both sides of the rotating axis. There are two limit pins, which are correspondingly arranged on the seat armrests that cooperate with the two limit protrusions to limit the position after the rotating arm rotates to open the small table.
[0008] As a further optimization of the above technical solution, a damper for limiting the rotation speed of the rotating arm is arranged on the rotating shaft of the rotating arm.
[0009] As a further optimization of the above technical solution, the limiting protrusions are symmetrically arranged on the outer side surface of the damper.
[0010] As a further optimization of the above technical solution, the damper is a friction damper, wherein the friction surfaces of two friction discs mounted on the rotating shaft are in friction contact, one of the friction discs is fixed on the rotating arm, and the other of the friction discs is fixed on the seat armrest, and when the rotating arm rotates forward or reversely, the friction between the two friction discs forms a resistance to limit the rotation speed of the rotating arm;
[0011] Or the damper is a liquid damper, which includes a circular container mounted on a rotating shaft and a partition plate arranged in the inner cavity of the circular container, the partition plate divides the circular container into more than two chambers, a damping plate with a damping hole extends into each of the chambers, the damping plate divides each chamber into a first chamber and a second chamber, all of the first chambers and the second chambers are arranged in sequence in the chambers, each of the first chambers is filled with liquid, the circular container is fixed on the rotating arm, and the damping plate is fixed on the armrest of the seat, when the rotating arm 41 rotates to drive the circular container to rotate in the direction of compressing the volume of the first chamber, the liquid in the first chamber flows into the second chamber through the damping hole, and conversely, the liquid in the second chamber flows into the first chamber through the damping hole, and the damping hole limits the flow rate or flow of the liquid and thus limits the rotation speed of the rotating arm.
[0012] As a further optimization of the above technical solution, a one-way valve is provided on the large through hole arranged on the damping plate, which is closed in the direction of the small table falling back and opened in the direction of lifting up, so that the one-way valve is closed when the small table falls back and the damping hole is used to limit the flow, and the one-way valve is automatically opened by pressure without limiting the flow when the small table is lifted; or the damping hole is arranged on the valve plate of the one-way valve, and the damping hole on the valve plate is always in a conducting state, so that the one-way valve is closed when the small table falls back and the damping hole on the valve plate is used to limit the flow, and the one-way valve is automatically opened by liquid pressure without limiting the flow when the small table is lifted.
[0013] As a further optimization of the above technical solution, the limiting protrusion is in the form of a triangle, one side of the triangle is formed on the outer surface of the damper, and the angle formed by the intersection of the other two sides is away from the center of the damper and is set to a rounded angle with a smooth transition.
[0014] As a further optimization of the above technical solution, the rear limit assembly includes a hinged joint, a hinged shaft and the cover plate, one hinged arm of the hinged joint is fixed on the seat armrest, and the other hinged arm is fixed on the cover plate, the two hinged arms are hingedly connected by the hinged shaft, and a return spring is mounted on the hinged shaft, one end of the return spring is fixed on the seat armrest, and the other end is fixed on the cover plate which applies force to the cover plate in the closing direction, and the cover plate limits the rotating arm from tipping backward after the small table is opened.
[0015] As a further optimization of the above technical solution, the return spring is a torsion spring.
[0016] As a further optimization of the above technical solution, there are three torsion springs, and the three torsion springs are arranged at intervals on the hinge shaft.
[0017] The outstanding advantages of the present invention compared with the prior art are:
[0018] 1. After the small table is opened from the seat armrest, the two limit pins cooperate with the two limit protrusions to limit the forward flipping of the rotating arm to prevent the small table from tipping forward.
[0019] 2. The return spring on the chair armrest of the present invention will drive the cover to close automatically after the cover is opened and released. When the cover is closed, the rotating arm will be limited to the rear side to prevent the table top from tipping backward.
[0020] The forward and backward tilting limits of the rotating arm ensure that the small table is stable in the deployed position and falls back smoothly, giving seat occupants a good experience when using the small table on an airplane or vehicle seat.
[0021] 3. The damper of the present invention prevents the small table from being lifted and lowered too quickly, making the small table move slowly when lifted and retracted, reducing noise such as impact and vibration, and further extending the service life of the corresponding equipment; when the damper limits the current in one direction, the current is only limited in one direction when the small table falls back, and there is no current limit when it is lifted, giving users a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a three-dimensional schematic diagram of the present invention after the cover plate is removed.
[0023] Figure 2 It is a three-dimensional schematic diagram of the present invention after the cover plate and the rotating arm are removed.
[0024] Figure 3 It is a partial exploded schematic diagram of the structure of the present invention after the rotating arm is removed.
[0025] Figure 4 It is a three-dimensional schematic diagram of the structure near the damper of the present invention.
[0026] Figure 5It is a partial three-dimensional schematic diagram of the cover plate and the hinged hinge of the present invention.
[0027] Figure 6 It is a cross-sectional view of the structural principle of one of the dampers of the present invention. DETAILED DESCRIPTION
[0028] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1-Figure 6 :
[0029] A seat armrest small table flip damping mechanism, comprising a seat armrest 10 with a table assembly storage cavity 12 and a cover plate 65 hinged on the upper opening of the seat armrest 10 storage cavity 12, and a table assembly hinged on the front upper corner 11 of the seat armrest 10 that can be rotated to enter and exit the seat armrest 10 storage cavity 12, one long side of the cover plate 65 is hingedly connected to the seat armrest 10 through a hinge joint 60, and the table assembly includes a rotating arm 41, the front end of the rotating arm 41 is hinged to the seat armrest 10 The upper and rear ends of the front upper corner 11 are hinged to the hinge part 44 of the small table 42 through the rear hinge part 43 of the rotating arm 41, and the seat armrest 10 is provided with a front limit assembly for limiting the rotating arm 41 from tipping forward after the table assembly is opened, and a rear limit assembly for limiting the rotating arm 41 from tipping backward. The setting of the front and rear limit assemblies can ensure that the unfolded position of the small table 42 is fixed and stable, avoiding the problem of the small table 42 shaking back and forth after being unfolded in the prior art, causing water in the cup or items on the small table 42 to fall off.
[0030] As a further optimization of the above technical solution, the front limiting assembly includes a limiting protrusion 71 arranged on the rotating arm 41 and a limiting pin 72 arranged on the seat armrest 10 .
[0031] As a further optimization of the above technical solution, there are two limit protrusions 71, which are symmetrically arranged on the rotating arms 41 on both sides of the rotating shaft 30. There are two limit pins 72, which are correspondingly arranged on the seat armrests 10 for cooperating with the two limit protrusions 71 to limit the position after the rotating arm 41 rotates to open the small table board 42. The two limit protrusions 71 and the two limit pins 72 cooperate to limit the position, the limiting torque is symmetrical, the force is uniform, and the limiting effect is good.
[0032] As a further optimization of the above technical solution, a damper for limiting the rotation speed of the rotating arm 41 is provided on the rotating shaft 30 of the rotating arm 41 .
[0033] As a further optimization of the above technical solution, the limiting protrusions 71 are symmetrically arranged on the outer side of the damper.
[0034] As a further optimization of the above technical solution, the damper is a friction damper, and the friction damper is a friction-type damper in which the friction surfaces of two friction discs mounted on the rotating shaft 30 are in friction contact, one of the friction discs is fixed on the rotating arm 41, and the other of the friction discs is fixed on the seat armrest 10. When the rotating arm 41 rotates forward or reversely, the friction between the two friction discs forms a resistance to limit the rotation speed of the rotating arm 41;
[0035] Or the damper 50 is a liquid damper, which includes a circular container 57 mounted on the rotating shaft 30 and a partition plate 51 arranged in the inner cavity of the circular container 57, wherein the partition plate 51 divides the circular container 57 into two or more chambers, each of which is extended with a damping plate 53 with a damping hole, and the damping plate 53 divides each chamber into a first chamber 56 and a second chamber 52, wherein all the first chambers 56 and the second chambers 52 are sequentially arranged in the chambers, and each of the first chambers 56 The circular container 57 is filled with liquid 55, and is fixed on the rotating arm 41. The damping plate 53 is fixed on the seat armrest 10. When the rotating arm 41 rotates and drives the circular container 57 to rotate in the direction of compressing the volume of the first chamber 56 (clockwise), the liquid 55 in the first chamber 56 flows into the second chamber 52 through the damping hole 54, and conversely, the liquid in the second chamber 52 flows into the first chamber 56 through the damping hole 54. The damping hole 54 limits the flow rate or flow of the liquid 55 and thus limits the rotation speed of the rotating arm 41.
[0036] As a further optimization of the above technical solution, a one-way valve 58 is provided on the large through hole 59 provided on the damping plate 53, which is closed in the falling direction of the small table board 42 and opened in the lifting direction, so that when the small table board 42 falls, the one-way valve 58 is closed and the damping hole 54 is used to limit the flow, and when the small table board 42 is lifted, the one-way valve 58 is automatically opened by liquid pressure without limiting the flow, or the damping hole 54 is provided on the valve plate 581 of the one-way valve 58, and the damping hole on the valve plate 581 is always in a conducting state, so that when the small table board 42 falls, the one-way valve 58 is closed and the damping hole 54 on the valve plate 581 is used to limit the flow, and when the small table board 42 is lifted, the one-way valve 58 is automatically opened by liquid pressure without limiting the flow, thereby realizing one-way flow limiting.
[0037] As a further optimization of the above technical solution, the limiting protrusion 71 is in the form of a triangle, one side of the triangle is formed on the outer surface 50 of the damper, and the angle formed by the intersection of the other two sides is away from the center of the damper 50 and is set to a rounded angle with a smooth transition.
[0038] As a further optimization of the above technical solution, the rear limit assembly includes a hinge joint 60, a hinge shaft 63 and the cover plate 65, one hinge arm 61 of the hinge joint 60 is fixed on the seat armrest 10, and the other hinge arm 62 is fixed on the cover plate 65, the two hinge arms 61 and 62 are hingedly connected by the hinge shaft 63, and a return spring 64 is mounted on the hinge shaft 63, one end of the return spring 64 is fixed on the upper part 13 of the side wall of the seat armrest 10, and the other end is fixed on the cover plate 65 that applies force to the cover plate 65 in the closing direction, and after the small table board 42 is opened, the cover plate 65 limits the rotating arm 41 from tipping backward.
[0039] As a further optimization of the above technical solution, the return spring 64 is a torsion spring.
[0040] As a further optimization of the above technical solution, there are three torsion springs, and the three torsion springs are arranged on the hinge shaft 63 at intervals to ensure sufficient reset force.
[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions or technical features described in the aforementioned embodiments can still be simply replaced or modified with similar technologies, and these simple replacements or modifications do not deviate the essence of the corresponding technical solutions from the spirit and essence of the technical solutions of the embodiments of the present invention, and are still within the protection scope of the present invention.
Claims
1. A seat armrest small table flip damping mechanism, comprising a seat armrest with a table assembly storage cavity, a cover plate hinged on the upper opening of the seat armrest storage cavity, and a table assembly hinged on the front upper corner of the seat armrest and rotatable in and out of the seat armrest storage cavity, characterized in that: One long side of the cover plate is hingedly connected to the seat armrest through a hinge joint, and the table board assembly includes a rotating arm, a front end of the rotating arm is hinged on the front upper corner of the seat armrest, and a rear end is hinged on the hinged part of the small table board, and the seat armrest is provided with a front limit assembly for limiting the rotating arm from tipping forward and a rear limit assembly for limiting the rotating arm from tipping backward after the table board assembly is opened.
2. The seat armrest small table flip damping mechanism according to claim 1, characterized in that: The front limiting assembly comprises a limiting protrusion arranged on the rotating arm and a limiting pin arranged on the seat armrest.
3. The seat armrest small table flip damping mechanism according to claim 2, characterized in that: There are two limit protrusions, which are symmetrically arranged on the rotating arms on both sides of the rotating shaft. There are two limit pins, which are correspondingly arranged on the seat armrests that cooperate with the two limit protrusions to limit the position after the rotating arm rotates to open the small table.
4. The seat armrest small table flip damping mechanism according to claim 2, characterized in that: A damper for limiting the rotation speed of the rotating arm is arranged on the rotating shaft of the rotating arm.
5. The seat armrest small table flip damping mechanism according to claim 4, characterized in that: The limiting protrusions are symmetrically arranged on the outer side surface of the damper.
6. The seat armrest small table flip damping mechanism according to claim 4, characterized in that: The damper is a friction damper, wherein the friction surfaces of two friction discs mounted on the rotating shaft are in friction contact, one of the friction discs is fixed on the rotating arm, and the other of the friction discs is fixed on the seat armrest. When the rotating arm rotates forward or reversely, the friction between the two friction discs forms resistance to limit the rotation speed of the rotating arm. Or the damper is a liquid damper, which includes a circular container mounted on a rotating shaft and a partition plate arranged in the inner cavity of the circular container, the partition plate divides the circular container into more than two chambers, a damping plate with a damping hole extends into each of the chambers, the damping plate divides each chamber into a first chamber and a second chamber, all of the first chambers and the second chambers are arranged in sequence in the chambers, each of the first chambers is filled with liquid, the circular container is fixed on the rotating arm, and the damping plate is fixed on the armrest or on the seat, when the rotating arm rotates and drives the circular container to rotate in the direction of compressing the volume of the first chamber, the liquid in the first chamber flows into the second chamber through the damping hole, and conversely, the liquid in the second chamber flows into the first chamber through the damping hole, and the damping hole limits the flow rate or flow of the liquid and thus limits the rotation speed of the rotating arm.
7. The seat armrest small table flip damping mechanism according to claim 6, characterized in that: A one-way valve for limiting the flow in the direction of the small table falling back is arranged on the large through hole arranged on the damping plate, so that when the small table falls back, the one-way valve is closed and the damping hole is used to limit the flow, and when the small table is lifted, the one-way valve automatically opens by pressure without limiting the flow; or the damping hole is arranged on the valve plate of the one-way valve, and the damping hole on the valve plate is always in a conducting state.
8. The seat armrest small table flip damping mechanism according to claim 4, characterized in that: The limiting protrusion is in the form of a triangle, one side of which is formed on the outer surface of the damper, and the angle formed by the intersection of the other two sides is far away from the center of the damper and is set as a rounded angle with a smooth transition.
9. A seat armrest small table flip damping mechanism according to any one of claims 1 to 8, characterized in that: The rear limit assembly includes a hinged joint, a hinged shaft and the cover plate, one hinged arm of the hinged joint is fixed on the seat armrest, the other hinged arm is fixed on the cover plate, the two hinged arms are hingedly connected by the hinged shaft, a return spring is mounted on the hinged shaft, one end of the return spring is fixed on the seat armrest, and the other end is fixed on the cover plate that applies force to the cover plate in the closing direction, and the cover plate limits the rotating arm from tipping backward after the small table is opened.
10. The seat armrest small table flip damping mechanism according to claim 9, characterized in that: The return spring is a torsion spring. There are three torsion springs, which are arranged on the hinge shaft at intervals.