CN112056843B - Automatic seat armrest storage structure and seat - Google Patents
Automatic seat armrest storage structure and seat Download PDFInfo
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- CN112056843B CN112056843B CN202010988511.4A CN202010988511A CN112056843B CN 112056843 B CN112056843 B CN 112056843B CN 202010988511 A CN202010988511 A CN 202010988511A CN 112056843 B CN112056843 B CN 112056843B
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- armrest
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- handrail
- seat
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- 238000000034 method Methods 0.000 claims description 36
- 230000008569 process Effects 0.000 claims description 35
- 230000003068 static effect Effects 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 3
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/54—Supports for the arms
- A47C7/543—Supports for the arms movable to inoperative position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/75—Arm-rests
- B60N2/753—Arm-rests movable to an inoperative position
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention discloses an automatic storage structure of a seat armrest, which comprises armrest mandrels arranged on two sides of a seat plate, wherein the seat plate is respectively hinged with the armrest mandrels on two sides, armrest shells are respectively sleeved on the armrest mandrels, the armrest shells are connected with the armrest mandrels in a sliding fit manner, and armrests are respectively arranged at the upper ends of the armrest shells; a first transmission mechanism is arranged between the seat plate and the handrail shells at two sides, and when the seat plate rotates along the hinge point between the seat plate and the handrail core shaft, the handrail shells can move up and down along the handrail core shaft under the action of the first transmission mechanism; a second transmission mechanism is arranged between the armrest shell and the armrest mandrel, and when the armrest shell moves up and down along the armrest mandrel, the armrest shell can rotate along the armrest mandrel under the action of the second transmission mechanism. The seat board is rotated in the vertical direction to drive the armrests to rotate in the horizontal direction, so that the seat board is stored when the seat board is up, and the armrests are automatically stored, so that the occupied space of the seat when the seat is not used is avoided.
Description
Technical Field
The invention relates to the technical field of seats, in particular to an automatic seat armrest storage structure and a seat.
Background
As is well known, most of the armrests in life are generally fixed structures, do not have the function of automatic folding and storage, not only occupy space, but also prevent the movement of a user when the user gets up, and bring inconvenience to the use; some seat armrests on passenger vehicles can be stored, but the seat armrests are stored manually by relying on external force, and the seat armrests are inconvenient to operate.
Disclosure of Invention
Aiming at the problems that automatic storage cannot be realized, space is occupied, use is inconvenient and the like in the prior art, the invention provides an automatic storage structure for a seat armrest and a seat.
In order to solve the technical problems, the invention adopts the following technical scheme:
The automatic storage structure of the seat armrest comprises armrest mandrels arranged on two sides of a seat plate, wherein the seat plate is respectively hinged with the armrest mandrels on two sides, armrest shells are respectively sleeved on the armrest mandrels, the armrest shells are respectively a left armrest shell and a right armrest shell, the armrest shells are connected with the armrest mandrels in a sliding fit manner, and armrests are respectively arranged at the upper ends of the armrest shells and are respectively a left armrest and a right armrest;
A first transmission mechanism is arranged between the seat plate and the handrail shells on two sides, the first transmission mechanism comprises a gear transmission assembly and a cam assembly, the cam assembly comprises two cams which are respectively arranged on two sides of the seat plate and respectively comprise a left cam and a right cam, the cams are positioned below the handrail shells and respectively form a support for the handrail shells; the cam is rotationally connected with the handrail core shaft, the seat board drives the cam to rotate through the gear transmission assembly when rotating, and the cam drives the handrail shell to move up and down along the handrail core shaft when rotating;
the second transmission mechanism is arranged between the armrest shell and the armrest mandrel and comprises a guide pin arranged on the armrest shell and a spiral groove arranged on the armrest mandrel, the guide pin is matched with the spiral groove, and when the armrest shell moves up and down along the armrest mandrel, the armrest shell can rotate along the armrest mandrel under the action of the second transmission mechanism.
In the above technical scheme, further, the left cam and the right cam synchronously rotate to form a conjugate cam structure, and the pushing stroke and the return stroke of the left cam and the right cam are conjugate and complementary, so that the left handrail shell and the right handrail shell move in opposite directions in the synchronous rotation process of the left cam and the right cam.
In the above technical solution, further, when the seat plate is disposed in the horizontal direction, the armrest is in a fully unfolded state, the supporting point between the left cam and the left armrest housing is located at the minimum arc radius of the left cam, the supporting point between the right cam and the right armrest housing is located at the maximum arc radius of the right cam, and the length of the left armrest housing is greater than that of the right armrest housing, so that the armrests on the left and right sides are located at the same height position;
When the seat board is arranged in the vertical direction, the armrests are in a complete storage state, the supporting point between the left cam and the left armrest shell is located at the maximum arc radius of the left cam, the supporting point between the right cam and the right armrest shell is located at the minimum arc radius of the right cam, and the armrests on the left side and the right side are stored between the two armrest mandrels and are arranged side by side in an up-down staggered mode.
In the above technical solution, further, the action process of the armrest from the unfolded state to the storage state is:
Taking initial phases of a left cam and a right cam in a fully unfolded state of the armrest as references, synchronously rotating the left cam and the right cam for a certain angle, and keeping the left armrest shell and the right armrest shell stationary;
The left cam and the right cam continue to rotate for a certain angle, the left cam enters a pushing stroke to push the left handrail shell to rise, and the right handrail shell keeps static;
The left cam and the right cam continue to rotate for a certain angle, the left armrest shell rises and moves to the uppermost position, and the right armrest shell descends at the same time;
the left cam and the right cam continue to rotate for a certain angle, the left handrail shell keeps static, and the right handrail shell descends and moves to the lowest end position;
the left cam and the right cam continue to rotate for a certain angle, and the left handrail shell and the right handrail shell remain static.
In the above technical scheme, further, the left cam and the right cam have the same structure and are arranged symmetrically on both sides of the seat plate, the cam working surface comprises a large arc section and a small arc section with the same rotation radius, and the two handrail shells have the same length;
When the seat board is arranged in the horizontal direction, the armrests are in a fully unfolded state, the supporting points between the cams and the armrests shell are positioned on the large arc sections of the cams, and the armrests on the left side and the right side are positioned at the same height position;
When the seat board is arranged in the vertical direction, the armrests are in a complete storage state, the supporting points between the cams and the armrest shells are located in small arc sections of the cams, the armrests on the left side and the right side are stored between the two armrest mandrels, and the armrests are arranged side by side at the same height position.
In the above technical solution, further, when the guide pin moves from one end of the spiral groove to the other end, the left handrail housing and the right handrail housing rotate by 90 °.
In the above technical scheme, further, the gear transmission assembly comprises first gear sets respectively arranged at two sides of the seat plate, wherein the first gear sets comprise an inner gear, an intermediate gear and an outer gear which are fixedly connected to the seat plate, and the intermediate gear is arranged between the inner gear and the outer gear and meshed with the inner gear and the outer gear respectively;
The external gear is arranged on the hinge shaft between the seat plate and the handrail core shaft, the cams are respectively and fixedly arranged on the hinge shafts at two sides, and the intermediate gear is arranged on the handrail core shaft through the gear shaft and is in rotary connection with the handrail core shaft.
In the above technical scheme, further, the gear transmission assembly includes the second gear train that sets up respectively in bedplate both sides, the second gear train includes the driving gear that sets up on the bedplate articulated shaft and with the driven gear of driving gear meshing, driven gear passes through driven gear axle and handrail dabber rotation to be connected, cam fixed connection is on driven gear axle.
In the above technical scheme, further, the transmission ratio of the gear transmission assembly is 1:3.
In the above technical scheme, further, a push rod sleeve is arranged between the cam and the armrest shell, the push rod sleeve is movably sleeved on the armrest mandrel, the lower end of the push rod sleeve is provided with a flange end face, and the flange end face is arranged on the cam.
In the technical scheme, further, a compression spring is sleeved above the handrail on the handrail mandrel.
The invention also relates to a seat adopting the automatic seat armrest storage structure.
Compared with the prior art, the invention has the following beneficial effects:
1) According to the invention, the armrests are driven to rotate in the horizontal plane direction by rotating the seat plate in the vertical direction, so that the seat plate is stored when the seat is lifted, and the armrests are automatically stored, thereby avoiding the occupation of space when the seat is not used.
2) The invention adopts the matching structure of the conjugate cam to control the handrail storage process, and the working contour line of the conjugate cam is arranged, so that the two handrails can not interfere in the relative rotation process in the handrail storage process, and the handrail storage device is stable and reliable in use.
Drawings
Fig. 1 is a schematic view of a seat armrest in an unfolded state according to a first embodiment of the present invention.
Fig. 2 is a schematic view of a seat armrest in a storage state according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a cooperation structure of a left cam and a first gear set according to an embodiment of the invention.
Fig. 4 is a schematic diagram of a right cam and first gear set matching structure according to an embodiment of the present invention.
Fig. 5 is a schematic diagram showing phase changes of the left cam and the right cam during the process of fully unfolding the armrest of the seat according to the first embodiment of the present invention.
Fig. 6 is a schematic view of a seat armrest in an unfolded state according to a second embodiment of the present invention.
Fig. 7 is a schematic view of a seat armrest in a storage state according to a second embodiment of the present invention.
In the figure: 101. a seat board, 102, armrests, 121, left armrests, 122, right armrests, 103 and an armrest mandrel; 105. push rod sleeve 106, compression spring 107, cross beam;
201. Left cam, 202, right cam;
301. Internal gear, 302, intermediate gear, 303, external gear, 304, hinge shaft, 305, gear shaft;
401. spiral grooves, 402, guide pins;
501. a left armrest housing 502, a right armrest housing;
601. driving gear 602, driven gear 603, driven gear shaft.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples. In this embodiment, the description of "left" and "right" refers to the orientation of the seat in the use state.
Example 1
As shown in fig. 1 and 2, in this embodiment, an automatic storage structure for a seat armrest includes armrest mandrels 103 disposed on two sides of a seat board 101, the seat board 101 is hinged to the armrest mandrels 103 on two sides, armrest shells are respectively sleeved on the armrest mandrels 103, and are respectively a left armrest shell 501 and a right armrest shell 502, the armrest shells are connected with the armrest mandrels 103 in a sliding fit manner, and armrests 102 are respectively disposed at upper ends of the armrest shells, and respectively correspond to the left armrest 121 and the right armrest 122.
A first transmission mechanism is arranged between the seat board 101 and the handrail shells on two sides, and when the seat board 101 rotates along the hinge point between the seat board 101 and the handrail core shaft, the handrail shells can move up and down along the handrail core shaft 103 under the action of the first transmission mechanism.
The first transmission mechanism in the embodiment comprises a gear transmission assembly and a cam assembly, wherein the cam assembly comprises two cams which are respectively arranged at two sides of a seat plate and are respectively a left cam 201 and a right cam 202, and the cams are positioned below the armrest housing and respectively form a support for the armrest housing; the cam is rotationally connected with the handrail core shaft, the seat board drives the cam to rotate through the gear transmission assembly when rotating, and the cam drives the handrail shell to move up and down along the handrail core shaft when rotating.
The rotation of the driving cam is realized through the rotation of the seat plate and the gear transmission assembly; the gear assembly comprises first gear sets respectively arranged at two sides of a seat plate, wherein the first gear sets comprise an inner gear 301, an intermediate gear 302 and an outer gear 303 which are fixedly connected to the seat plate, and the intermediate gear 302 is arranged between the inner gear 301 and the outer gear 303 and meshed with the inner gear and the outer gear respectively. The external gear 303 is arranged on a hinge shaft 304 between the seat plate and the handrail core shaft, the cams are respectively fixedly arranged on the hinge shafts 304 at two sides, and the intermediate gear 302 is arranged on the handrail core shaft 103 through a gear shaft 305 and is in rotary connection with the handrail core shaft. When the seat board rotates, an internal gear connected to the seat board rotates, the internal gear rotates to drive an intermediate gear to rotate, and the intermediate gear rotates to drive an external gear to rotate; because the external gear and the cam are fixedly connected to the hinge shaft, the cam is driven to rotate through the hinge shaft, and therefore the cam is driven.
In this embodiment, the internal gear of the first gear set composed of the internal gear 301, the intermediate gear 302 and the external gear 303 is a sector internal gear with a larger diameter, and the diameter of the intermediate gear is smaller than that of the external gear, so that the first gear set forms a speed increasing gear set, and the transmission ratio of the first gear set is set to be about 1:3 according to the working profile surface and the movement stroke of the cam.
Specifically, the length of the left armrest housing 501 is greater than that of the right armrest housing 502, the left cam 201 and the right cam 202 rotate synchronously to form a conjugate cam structure, and the pushing stroke and the return stroke of the left cam 201 and the right cam 202 are conjugate and complementary, so that the left cam and the right cam move in opposite directions during synchronous rotation of the left armrest housing 501 and the right armrest housing 502, and interference caused by collision of relative rotation between armrests during storage or unfolding of the armrests is avoided, and the function of armrest storage is affected.
When the seat board 101 is arranged in the horizontal direction, the armrests are in a fully unfolded state, the supporting point between the left cam 201 and the left armrest housing 501 is positioned at the minimum arc radius of the left cam, the supporting point between the right cam 202 and the right armrest housing 502 is positioned at the maximum arc radius of the right cam, and the difference between the arc radii of the two cams and the supporting points of the corresponding armrest housings is exactly equal to the height difference of the two armrest housings, so that the armrests on the left side and the right side are exactly positioned at the same height position when being unfolded.
When the seat board 101 is arranged in the vertical direction, the armrests are in a fully-stored state, the supporting point between the left cam 201 and the left armrest housing 501 is located at the maximum arc radius of the left cam, and the supporting point between the right cam 202 and the right armrest housing 502 is located at the minimum arc radius of the right cam, so that the armrests on the left side and the right side are arranged in a staggered manner.
Meanwhile, in order to further avoid interference caused by collision when the armrests relatively rotate in the storage process, the structures of the left cam and the right cam are optimally arranged, so that the left cam and the right cam which are in conjugate fit are in synchronous rotation, and the action process of the armrests in the storage state from the unfolding state is as follows: the actions in the process comprise the following steps of avoiding interference caused by collision of the armrests in the relative rotation process in the accommodating process; the method comprises the following steps:
Taking initial phases of a left cam and a right cam in a fully unfolded state of the armrest as references, synchronously rotating the left cam and the right cam for a certain angle, and keeping the left armrest shell and the right armrest shell stationary;
The left cam and the right cam continue to rotate for a certain angle, the left cam enters a pushing stroke to push the left handrail shell to rise, and the right handrail shell keeps static;
The left cam and the right cam continue to rotate for a certain angle, the left armrest shell rises and moves to the uppermost position, and the right armrest shell descends at the same time;
the left cam and the right cam continue to rotate for a certain angle, the left handrail shell keeps static, and the right handrail shell descends and moves to the lowest end position;
the left cam and the right cam continue to rotate for a certain angle, and the left handrail shell and the right handrail shell remain static.
Preferably, a push rod sleeve 105 is arranged between the cam and the handrail shell, the push rod sleeve 105 is movably sleeved on the handrail mandrel 103, the lower end of the push rod sleeve 105 is provided with a flange end face, and the flange end face is arranged on the cam. The cam contacts with the flange end face of the push rod sleeve when rotating, and the push rod sleeve pushes the armrest shell to move.
As shown in fig. 3, a second transmission mechanism is arranged between the armrest housing and the armrest mandrel, and when the armrest housing moves up and down along the armrest mandrel, the armrest housing can rotate along the armrest mandrel under the action of the second transmission mechanism. Specifically, the second transmission mechanism in the present embodiment includes a guide pin 402 provided on the handrail housing and a spiral groove 401 provided on the handrail spindle, and the guide pin 402 is disposed in the spiral groove 401 in a fitting manner. When the armrest shell moves up and down, under the action of the matching guide of the guide pin and the spiral groove, the armrest shell rotates along the spiral groove, and the rotation angle and the movement process of the armrest shell can be set through the groove structure with the spiral groove.
The left and right handrail housings are rotated by 90 ° when the guide pin moves from one end of the spiral groove to the other end by the spiral groove 401 and the guide pin 402. Specifically, in this embodiment, when the armrest is in a fully extended state, the guide pin on the left armrest housing is located at the lower end of the corresponding spiral groove; the guide pin on the right armrest housing is positioned at the upper end of the corresponding spiral groove. In the process of storage of the handrails, the left handrail shell moves upwards under the action of the left cam, the left handrail shell rotates towards the right side while ascending, and when the guide pin moves to the uppermost end of the spiral groove, the left handrail rotates by 90 degrees; the right handrail shell moves downwards under the action of the right cam, the right handrail shell rotates towards the left side while descending, when the guide pin moves the bottommost end of the spiral groove, the right handrail rotates by 90 degrees, and the left handrail and the right handrail are in a storage state which are staggered and arranged side by side up and down; the armrest deployment process is the opposite of the above process and will not be described in detail here.
In the embodiment, a compression spring 106 is sleeved above the handrail on the handrail core shafts 103, a cross beam 107 can be arranged at the upper ends of the two handrail core shafts 103, one end of the compression spring 106 is propped against the cross beam 107, and the other end is propped against the handrail 102; when the cam moves in a return stroke, the compression spring provides downward thrust for the armrest housing, so that the reliability of the armrest housing in the moving process is ensured.
The following describes a process of moving the armrest from the unfolded state to the stored state with reference to the automatic armrest storing structure in the present embodiment, and is specifically as follows:
1) As shown in fig. 5 (a), the phase of the two cams when the armrest is fully extended is set in the horizontal direction as the initial phase; at the moment, the guide pin on the left handrail shell is positioned at the lowest part of the spiral groove, the guide pin on the right handrail shell is positioned at the highest part of the spiral groove, the supporting point between the left cam and the left handrail shell is positioned at the minimum arc radius of the left cam, the supporting point between the right cam and the right handrail shell is positioned at the maximum arc radius of the right cam, and at the moment, the handrails on the left side and the right side are positioned at the same height position;
2) As shown in fig. 5 (b), the seat plate rotates downward in the vertical direction, driving the cam to synchronously rotate by 50 °, and at this time, the phase angle of the cam changes from 0 ° to 50 °; at the moment, the arc radiuses of the working surfaces of the left cam and the right cam are the same, and the left handrail shell and the right handrail shell are kept static;
3) As shown in fig. 5 (c), the cams continue to rotate synchronously by 50 ° at which time the cam phase angle changes from 50 ° to 100 °; in the process, the left cam enters a pushing stroke, the left cam pushes the left armrest shell to ascend, and the left armrest shell simultaneously rotates under the action of the guide pin and the spiral groove in the ascending process, so that the left armrest shell ascends and rotates inwards by about 65 degrees; in the process, the arc radius of the working surface of the part on the right cam is the same, and the right handrail shell is kept static;
4) As shown in fig. 5 (d), the cams continue to rotate 10 ° synchronously, at which time the cam phase angle changes from 100 ° to 110 °; in the process, the left cam continuously pushes the left armrest shell to rise to the highest position, the left armrest shell rotates to 90 degrees, and the left armrest shell is completely contained at the moment; simultaneously, the right cam handrail enters a return stroke, the right handrail shell starts to descend under the action of dead weight and a compression spring, and the right handrail shell rotates simultaneously under the action of a guide pin and a spiral groove in the descending process, so that the right handrail shell rotates inwards by about 40 degrees;
5) As shown in fig. 5 (e), the cam continues to rotate synchronously by 50 ° at which time the cam phase angle changes from 110 ° to 160 °; in the process, the arc radius of the working surface of the part on the left cam is the same, and the left armrest shell is kept static; the right armrest shell continuously descends to the lowest position and simultaneously rotates to 90 degrees, so that the right armrest shell is completely contained; the staggered and staggered storage and folding of the handrails at the left side and the right side are realized, and the handrails at the left side and the right side are stored between the handrail mandrels at the two sides in a vertically staggered and side-by-side mode;
6) As shown in fig. 5 (f), the cams continue to rotate synchronously 80 ° with the cam phase angle changing from 160 ° to 240 °; the arc radiuses of the working surfaces of the left cam and the right cam are the same in the process, the left armrest shell and the right armrest shell are kept static, the armrests are kept static and in different states, the seat plate rotates to a complete storage state, and the automatic storage of the complete armrests is realized while the seat plate is stored.
On the contrary, when the seat board rotates upwards along the vertical direction, the armrests move from the storage state to the unfolding state, so that the unfolding operation of the armrests is completed when the seat board rotates to the working state, the process is exactly opposite to the above process, the action principle of the process is the same as that of the above process, and the operation is not repeated here.
Generally, when the seat plate forms an included angle of about 15 ° with the horizontal direction, the user is in a sitting position and a leaving position, and the armrest should be kept unfolded, as described above, the phase angle of the corresponding cam changes to 50 °, i.e. the ratio between the rotation angle of the seat plate and the rotation angle of the cam is about 1:3, so that the transmission ratio of the first gear set consisting of the inner gear, the intermediate gear and the outer gear is about 1:3.
Example two
The automatic seat armrest accommodating structure in this embodiment differs from the first embodiment in the structure adopted by the first transmission mechanism and the second transmission mechanism, and is specifically as follows:
As shown in fig. 6 and 7, in this embodiment, two cams adopted by the cam assembly have the same structure, the left gear 201 and the right gear 202 are symmetrically arranged on two sides of the seat board 101, and the working surface of the cam comprises a large arc section and a small arc section with the same rotation radius; and the two handrail shells are the same in length.
As shown in fig. 6, when the seat plate is horizontally arranged, the armrests are in a fully unfolded state, and the supporting points between the cam and the armrests shell are positioned on the large arc sections of the cam, so that the armrests on the left side and the right side are positioned at the same height position.
As shown in fig. 7, when the seat plate is arranged in the vertical direction, the armrests are in a fully-stored state, and the supporting points between the cam and the armrests shell are positioned in the small arc sections of the cam, so that the armrests on the left side and the right side are stored between the two armrests core shafts, and are arranged side by side at the same height position.
In the rotation process of the cam, when the supporting point between the cam and the handrail shell is in transition from the large arc section to the small arc section or from the small arc section to the large arc section, the handrail relatively rotates inwards or outwards by 90 degrees.
The gear transmission assembly in the embodiment comprises second gear sets respectively arranged at two sides of the seat plate, the second gear sets comprise a driving gear 601 arranged on the hinge shaft of the seat plate and a driven gear 602 meshed with the driving gear, the driven gear 602 is rotationally connected with the handrail core shaft 103 through a driven gear shaft 603, and the cam is fixedly connected on the driven gear shaft 603. When the seat board rotates, the seat board hinge shaft drives the driving gear to rotate, the driving gear drives the driven gear to rotate, and the driven gear drives the corresponding cam to rotate.
When the armrest is in a fully unfolded state, setting the phase of the cam at the position as an initial phase, rotating the cam by a certain angle, wherein the arc radius of a supporting point between the cam and the armrest shell is unchanged, and the armrest shell is always in a static state in the process; the seat board continues to rotate, and the handrail shell moves downwards simultaneously along with the cam, and under the action of the guide pin and the spiral groove, the handrail shell rotates inwards simultaneously, and when the cam rotates to a small arc section to support the handrail shell, the handrail shell rotates by 90 degrees relatively, so that the handrail can be stored and folded.
On the contrary, when the seat board rotates upwards along the vertical direction, the armrests move from the storage state to the unfolding state, so that the unfolding operation of the armrests is completed when the seat board rotates to the working state, the process is exactly opposite to the above process, the action principle of the process is the same as that of the above process, and the operation is not repeated here.
During the complete unfolding of the armrest, the seat is rotated 90 °, the cam is rotated 270 °, i.e. the ratio between the rotation angle of the seat pan and the rotation angle of the cam is about 1:3, and therefore the transmission ratio of the second gear set is also about 1:3.
Example III
The embodiment is a seat adopting the seat armrest automatic storage structure in the embodiment, the seat plate can be stored and simultaneously can automatically store armrests, the seat plate can be rotated to a working state and simultaneously can automatically expand the armrests, other additional power elements are not required to be arranged, the whole structure is simple, the operation and the use are convenient, the occupation of space can be reduced, the seat armrest automatic storage structure can be widely applied to various fields in work and life, and the seat armrest automatic storage structure has good practicability.
The specification and figures are to be regarded in an illustrative rather than a restrictive sense, and one skilled in the art, in light of the teachings of this invention, may make various substitutions and alterations to some of its features without the need for inventive faculty, all being within the scope of this invention.
Claims (10)
1. The automatic storage structure of the seat armrest is characterized by comprising armrest mandrels arranged on two sides of a seat plate, wherein the seat plate is respectively hinged with the armrest mandrels on two sides, armrest shells are respectively sleeved on the armrest mandrels, namely a left armrest shell and a right armrest shell, the armrest shells are connected with the armrest mandrels in a sliding fit manner, and armrests are respectively arranged at the upper ends of the armrest shells, namely a left armrest and a right armrest;
A first transmission mechanism is arranged between the seat plate and the handrail shells on two sides, the first transmission mechanism comprises a gear transmission assembly and a cam assembly, the cam assembly comprises two cams which are respectively arranged on two sides of the seat plate and respectively comprise a left cam and a right cam, the cams are positioned below the handrail shells and respectively form a support for the handrail shells; the cam is rotationally connected with the handrail core shaft, the seat board drives the cam to rotate through the gear transmission assembly when rotating, and the cam drives the handrail shell to move up and down along the handrail core shaft when rotating;
A second transmission mechanism is arranged between the armrest shell and the armrest mandrel, the second transmission mechanism comprises a guide pin arranged on the armrest shell and a spiral groove arranged on the armrest mandrel, the guide pin is arranged in the spiral groove in a matching way, and when the armrest shell moves up and down along the armrest mandrel, the armrest shell can rotate along the armrest mandrel under the action of the second transmission mechanism;
The left cam and the right cam synchronously rotate to form a conjugate cam structure, and the pushing stroke and the return stroke of the left cam and the right cam are conjugate and complementary, so that the left handrail shell and the right handrail shell move in opposite directions in the synchronous rotation process of the left cam and the right cam;
When the seat board is horizontally arranged, the armrests are in a fully unfolded state, a supporting point between the left cam and the left armrest shell is positioned at the minimum arc radius of the left cam, a supporting point between the right cam and the right armrest shell is positioned at the maximum arc radius of the right cam, and the length of the left armrest shell is longer than that of the right armrest shell, so that armrests on the left side and the right side are positioned at the same height position;
When the seat board is arranged in the vertical direction, the armrests are in a complete storage state, the supporting point between the left cam and the left armrest shell is located at the maximum arc radius of the left cam, the supporting point between the right cam and the right armrest shell is located at the minimum arc radius of the right cam, and the armrests on the left side and the right side are stored between the two armrest mandrels and are arranged side by side in an up-down staggered mode.
2. The automatic seat armrest storage structure according to claim 1, wherein the armrest is moved from the extended state to the stored state by:
Taking initial phases of a left cam and a right cam in a fully unfolded state of the armrest as references, synchronously rotating the left cam and the right cam for a certain angle, and keeping the left armrest shell and the right armrest shell stationary;
The left cam and the right cam continue to rotate for a certain angle, the left cam enters a pushing stroke to push the left handrail shell to rise, and the right handrail shell keeps static;
The left cam and the right cam continue to rotate for a certain angle, the left armrest shell rises and moves to the uppermost position, and the right armrest shell descends at the same time;
the left cam and the right cam continue to rotate for a certain angle, the left handrail shell keeps static, and the right handrail shell descends and moves to the lowest end position;
the left cam and the right cam continue to rotate for a certain angle, and the left handrail shell and the right handrail shell remain static.
3. The automatic seat armrest storage structure according to claim 1, wherein the left cam and the right cam are identical in structure and are arranged symmetrically on both sides of the seat plate, the cam working surface comprises a large arc section and a small arc section with identical rotation radius, and the two armrest shells are identical in length;
When the seat board is arranged in the horizontal direction, the armrests are in a fully unfolded state, the supporting points between the cams and the armrests shell are positioned on the large arc sections of the cams, and the armrests on the left side and the right side are positioned at the same height position;
When the seat board is arranged in the vertical direction, the armrests are in a complete storage state, the supporting points between the cams and the armrest shells are located in small arc sections of the cams, the armrests on the left side and the right side are stored between the two armrest mandrels, and the armrests are arranged side by side at the same height position.
4. The automatic seat armrest receiving structure according to any one of claims 1,2 or 3, wherein the left armrest housing and the right armrest housing are rotated by 90 ° when the guide pin moves from one end of the spiral groove to the other end.
5. The automatic seat armrest receiving structure according to claim 1, wherein the gear transmission assembly includes first gear sets respectively provided at both sides of the seat plate, the first gear sets including an internal gear, an intermediate gear and an external gear fixedly connected to the seat plate, the intermediate gear being provided between the internal gear and the external gear and meshed with the internal gear and the external gear, respectively;
The external gear is arranged on the hinge shaft between the seat plate and the handrail core shaft, the cams are respectively and fixedly arranged on the hinge shafts at two sides, and the intermediate gear is arranged on the handrail core shaft through the gear shaft and is in rotary connection with the handrail core shaft.
6. The automatic seat armrest storage structure according to claim 1, wherein the gear transmission assembly comprises second gear sets respectively arranged at both sides of the seat plate, the second gear sets comprise a driving gear arranged on the hinge shaft of the seat plate and a driven gear meshed with the driving gear, the driven gear is rotatably connected with the armrest mandrel through a driven gear shaft, and the cam is fixedly connected with the driven gear shaft.
7. The automatic seat armrest receiving structure according to claim 5 or 6, wherein the gear ratio of the gear assembly is 1:3.
8. The automatic seat armrest storage structure according to claim 1, wherein a push rod sleeve is provided between the cam and the armrest housing, the push rod sleeve is movably sleeved on the armrest mandrel, a flange end face is provided at the lower end of the push rod sleeve, and the flange end face is provided on the cam.
9. The automatic seat armrest storage structure according to claim 1, wherein the armrest mandrel is provided with a compression spring in a sleeved manner above the armrest.
10. A seat, characterized in that the automatic seat armrest storage structure according to any one of claims 1 to 9 is employed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010988511.4A CN112056843B (en) | 2020-09-18 | 2020-09-18 | Automatic seat armrest storage structure and seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010988511.4A CN112056843B (en) | 2020-09-18 | 2020-09-18 | Automatic seat armrest storage structure and seat |
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| Publication Number | Publication Date |
|---|---|
| CN112056843A CN112056843A (en) | 2020-12-11 |
| CN112056843B true CN112056843B (en) | 2024-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010988511.4A Active CN112056843B (en) | 2020-09-18 | 2020-09-18 | Automatic seat armrest storage structure and seat |
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| Country | Link |
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| CN (1) | CN112056843B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023137619A1 (en) * | 2022-01-19 | 2023-07-27 | 致欧家居科技股份有限公司 | Connection component for armrest of chair, and chair having said component |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202232633U (en) * | 2011-08-17 | 2012-05-30 | 江南大学 | Folding chair |
| CN204260246U (en) * | 2014-12-15 | 2015-04-15 | 浙江大丰实业股份有限公司 | Be installed on handrail and the chair back interlock folding seat of pedestal |
| CN209499181U (en) * | 2018-10-28 | 2019-10-18 | 薛勇 | A kind of folding seat |
| CN209629130U (en) * | 2019-01-25 | 2019-11-15 | 河北恒益诚舞台设备有限公司 | Seat handrail coordinated type rumble seat |
-
2020
- 2020-09-18 CN CN202010988511.4A patent/CN112056843B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202232633U (en) * | 2011-08-17 | 2012-05-30 | 江南大学 | Folding chair |
| CN204260246U (en) * | 2014-12-15 | 2015-04-15 | 浙江大丰实业股份有限公司 | Be installed on handrail and the chair back interlock folding seat of pedestal |
| CN209499181U (en) * | 2018-10-28 | 2019-10-18 | 薛勇 | A kind of folding seat |
| CN209629130U (en) * | 2019-01-25 | 2019-11-15 | 河北恒益诚舞台设备有限公司 | Seat handrail coordinated type rumble seat |
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|---|---|
| CN112056843A (en) | 2020-12-11 |
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