CN112238800A

CN112238800A - Armrest with automatic folding function

Info

Publication number: CN112238800A
Application number: CN201910656544.6A
Authority: CN
Inventors: 刘朔; 邵希臣; 任宏伟; 田淼磊
Original assignee: Nobo Automotive Systems Co Ltd
Current assignee: Nobo Automotive Systems Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2021-01-19
Anticipated expiration: 2039-07-19
Also published as: CN112238800B

Abstract

The invention provides an armrest with an automatic folding function, which comprises an armrest shell, a locking unit, a first unlocking mechanism and a second unlocking mechanism, wherein the locking unit, the first unlocking mechanism and the second unlocking mechanism are arranged in the armrest shell, the locking unit can enable the armrest to have a locking state fixed relative to a backrest or an unlocking state rotating relative to the backrest, the first unlocking mechanism can enable the armrest to be switched from the locking state to the unlocking state along with the rotation of the backrest, and a resetting piece of the second unlocking mechanism can store energy along with the switching of the armrest from the locking state to the unlocking state and release the energy along with the switching of the armrest from the unlocking state to the locking state. The armrest with the automatic folding function can realize the automatic folding function along with the forward tilting of the backrest when the backrest rotates relative to the seat cushion, so that the folding use of the backrest is not influenced, and the convenience of the armrest in the use process can be greatly improved.

Description

Armrest with automatic folding function

Technical Field

The invention relates to the technical field of automobile parts, in particular to an armrest with an automatic folding function.

Background

The automobile armrest is a seat component for supporting the arms of passengers to keep comfortable postures, and is divided into a front-row outer armrest and a middle-rear-row central armrest according to the using and mounting positions of the automobile armrest; the middle back row central armrest can be divided into a middle back row central short armrest and a middle back row central long armrest (with a headrest) according to the length of the armrest. Wherein: the front outboard armrest is a seat assembly mounted to the left and/or right side of the front seat back.

At present, most vehicle types on the market have two positions of use and storage for front-row armrests, the position of the armrest for use and the gear adjustment are only applied to part of middle-high-grade vehicle types, and the armrests have more obvious advantages in the aspects of comfort, delicacy and the like.

The use position is provided with a gear adjusting handrail, and the adjusting mode has various realization forms, but most of the adjusting modes use a ratchet structure to realize the adjustment. The handrail with the ratchet structure comprises the pawl and the toothed plate, the tooth form is oblique, the handrail can be lifted upwards and locked downwards, and the handrail can be quickly pulled upwards and then pressed downwards to realize downward adjustment. The armrest adjusting mechanism based on the above principle achieves mass production.

However, the existing gear adjusting handrail in the prior art has the following disadvantages in the adjusting process:

1. the existing handrail is mostly adjusted by manually pulling the handrail at a gear position, and downward adjustment can be realized only by pulling the handrail upwards at a certain speed, so that the comfort and the delicacy are poor in the adjustment process;

2. the existing armrest is adjusted from the use position to the storage position by manually pulling the armrest, so that the automatic storage function from the use position to the storage position cannot be realized;

3. the existing handrail can not meet the requirement of the use of the back row quick access function of the three-door vehicle, and the handrail needs to be folded along with the backrest to be automatically stored in the use process of the three-door vehicle.

Disclosure of Invention

In view of the above, the present invention is directed to a handrail with an automatic retracting function, so as to improve the convenience of application.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

an armrest with an automatic stowing function mounted on a backrest of a vehicle seat, a pivot shaft being positioned on one side of the backrest, the armrest comprising:

the armrest shell is arranged in a rotating mode relative to the backrest by taking the pivot shaft as a rotating center, and an accommodating cavity is formed in the armrest shell;

the locking unit is arranged in the accommodating cavity and comprises a ratchet wheel fixedly sleeved on the pivot shaft, a rotating part rotatably arranged in the accommodating cavity and a transmission part positioned in the accommodating cavity and rotationally arranged along with the armrest shell, one end of the rotating part is provided with a pawl matched with the ratchet wheel, and the other end of the rotating part is connected with the transmission part in an abutting mode; and because the driving medium rotates with the armrest shell, the rotating part can swing to be matched with or separated from the ratchet wheel, so that the armrest has a locking state which can be fixed relative to the backrest or an unlocking state which can rotate relative to the backrest;

the first unlocking mechanism comprises a first swinging piece rotatably arranged in the accommodating cavity, a first connecting piece connected between one end of the first swinging piece and the transmission piece, and an unlocking pull wire connected to the other end of the first swinging piece; the unlocking pull wire is connected with the backrest and can drive the first swinging piece to swing along with the rotation of the backrest relative to a seat cushion of the vehicle seat, so that the armrest is switched from a locking state to an unlocking state;

the second unlocking mechanism comprises a driving piece and a resetting piece, wherein the driving piece drives the driving piece to swing, the resetting piece is connected with the driving piece and is connected with the driving piece, the resetting piece can store energy along with the switching of the armrest from the locking state to the unlocking state and release energy along with the switching of the armrest from the unlocking state to the locking state.

Further, the piece that resets is located including the cover the epaxial first torsional spring of pivot of driving medium, just one end of first torsional spring for handrail shell location sets up, the other end follow-up of first torsional spring in the setting of rotation piece.

Furthermore, the second unlocking mechanism comprises a second swinging piece which is rotatably arranged in the accommodating cavity, a sliding piece which is slidably arranged in the accommodating cavity, a second connecting piece which is connected between the second swinging piece and the sliding piece, and a third connecting piece which is connected between the sliding piece and the transmission piece, and is connected with the swinging of the second swinging piece to drive, and the armrest can be switched between a locking state and an unlocking state.

Furthermore, the second unlocking mechanism comprises a third swinging piece rotatably arranged in the accommodating cavity and a fourth connecting piece connected between the third swinging piece and the sliding piece and driven by the swinging of the third swinging piece, and the armrest can be switched between a locking state and an unlocking state.

Furthermore, the driving member is connected to the second swinging member and the third swinging member, and the second swinging member and the third swinging member swing in opposite directions due to the opposite swinging of the driving member, so that the armrest can be switched from the locked state to the unlocked state.

Further, at least two ratchet teeth are arranged around the circumference of the ratchet wheel, and the armrest has at least two fixed positions fixed relative to the backrest due to the matching of the pawl and each ratchet tooth.

Furthermore, an elastic element is arranged in the accommodating cavity, and the elastic element is enabled to gather energy along with the switching of the handrail between two adjacent fixed positions along one direction, and the elastic element is enabled to release energy along with the reverse switching of the handrail between two adjacent fixed positions.

Furthermore, the elastic element is a second torsion spring sleeved on the pivot shaft, one end of the second torsion spring follows the armrest, and the other end of the second torsion spring is positioned relative to the backrest.

Further, the armrest further comprises:

damping mechanism, including for the damping piece that the ratchet location set up, and set up in rotating the last setting element of piece, and in the circumference of damping piece be equipped with can with the setting element butt, in order to keep the outside convex part of the unblock state of handrail, and to the setting element lets the position, so that the handrail is in the interior concave part of locking state.

Further, a mounting plate is fixedly arranged in the armrest shell, and the first unlocking mechanism and the second unlocking mechanism are respectively arranged on two sides of the mounting plate.

Compared with the prior art, the invention has the following advantages:

the armrest with the automatic folding function is provided with the first unlocking structure and the second unlocking mechanism, so that the armrest can realize the automatic folding function along with the forward tilting of the backrest in the process that the backrest rotates relative to the seat cushion, the folding use of the backrest is not influenced, the convenience of the armrest in the use process can be greatly improved, and the armrest is applied to a three-door vehicle and can greatly improve the convenience of rear passengers entering the vehicle.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of an armrest with an automatic retracting function in an application state without a housing according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an armrest with an automatic retracting function in an application state without a front housing according to an embodiment of the present invention;

fig. 3 is an exploded view of an armrest with an automatic stowing function according to an embodiment of the present invention in an applied state;

fig. 4 is a front view of an applied state of the armrest with the automatic retracting function according to the embodiment of the present invention;

FIG. 5 is a left side view of FIG. 4;

FIG. 6 is a rear view of FIG. 4;

fig. 7 is a schematic structural diagram of an armrest with an automatic retracting function according to an embodiment of the present invention in a locked state;

FIG. 8 is a schematic view of the handle of FIG. 7 being unlocked by dialing up the driving member;

FIG. 9 is a schematic view of the handle of FIG. 7 in an unlocked position after the drive member is toggled downward;

FIG. 10 is a front view of an unlocking cable according to an embodiment of the present invention mounted to a backrest to lock an armrest;

FIG. 11 is a front view of the release pull wire of FIG. 10 with the armrest in an unlocked position;

FIG. 12 is a rear view of an unlocking tab attached to the armrest and locking the armrest in accordance with an embodiment of the present invention;

FIG. 13 is a rear view of the unlocking cable of FIG. 12 with the armrest in an unlocked position;

FIG. 14 is a schematic view of the pivot shaft assembly according to an embodiment of the present invention;

description of reference numerals:

1-handrail shell, 101-rear shell, 2-angle adjuster upper connecting plate, 3-handrail mounting bracket, 301-projection welding nut; 4-pivot axis, 5-ratchet, 501-ratchet, 6-rotary, 601-rotary axis, 602-pawl, 7-drive, 701-drive axis, 702-toggle, 703-link, 8-mount, 801-front mount, 802-rear mount, 9-first pendulum, 10-first link, 12-mount, 13-unlocking pull, 1301-protective sheath, 1302-snap, 1303-pull, 1304-chuck, 14-drive, 15-reset, 16-second pendulum, 17-slider, 18-second link, 19-third link, 20-third pendulum, 21-fourth link, 22-button decorative cover, 23-a first torsion spring, 24-a second torsion spring, 25-a damping piece, 2501-an external convex part, 2502-an internal concave part, 26-a positioning piece and 27-a lower angle adjuster connecting plate.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The present embodiment relates to an armrest having an automatic stowing function, which is mounted on a backrest of a vehicle seat, and mainly includes an armrest housing 1, a locking unit, a first unlocking mechanism, and a second unlocking mechanism.

As shown in fig. 1 to 6, the armrest housing 1 includes a front housing and a rear housing 101, which are fastened to form a receiving cavity, and since the first unlocking mechanism and the second unlocking mechanism are both disposed in the receiving cavity, in order to clearly show the specific structures of the first unlocking mechanism and the second unlocking mechanism, the structure of the armrest housing 1 is not shown in fig. 1, only the structure of the rear housing 101 is shown in fig. 2 to 6, and the cross section of the rear housing 101 has a U shape, which is substantially symmetrical to the structure of the front housing not shown in the drawings.

In order to facilitate the installation of the armrest, an upper angle adjuster connecting plate 2 is fixedly arranged on a backrest of the vehicle seat, the upper angle adjuster connecting plate 2 can be installed on the backrest according to the existing installation structure, a lower angle adjuster connecting plate 27 is fixedly arranged on a seat cushion of the vehicle seat, the lower angle adjuster connecting plate can be installed on the seat cushion according to the existing installation structure, and the upper angle adjuster connecting plate 2 can rotate relative to the lower angle adjuster connecting plate 27.

The armrest mounting bracket 3 is fixedly arranged on the upper connecting plate of the angle adjuster, for example, welding, bolt connection and the like, the cross section of the armrest mounting bracket 3 is in a shape like a Chinese character ji, the mounting position of the armrest mounting bracket 3 can be seen in fig. 1, and as shown in fig. 3, a projection welding nut 301 is welded on the inner concave surface of the armrest mounting bracket 3 facing the upper connecting plate 2 of the angle adjuster so as to be fixedly connected with a pivot shaft 4 of an armrest shell 1, so that the pivot shaft 4 is positioned and arranged on the backrest, and the axial direction of the pivot shaft 4 generally extends along the width direction of the vehicle. In this configuration, the pivot axis 4 can of course also be positioned relative to the backrest by means of other mounting arrangements.

For the convenience of installing other spare parts, the installation frame 8 is fixedly arranged in the accommodating cavity, the installation frame 8 specifically comprises a front installation part 801 and a rear installation part 802 which are oppositely buckled, the front installation part 801 and the rear installation part 802 can be fixedly arranged in the accommodating cavity through a connecting piece 703 such as a bolt penetrating through the front shell, the rear shell 101, the front installation part 801 and the rear installation part 802, and certainly, the connecting piece can also be fixedly arranged in the accommodating cavity through other structures, such as a limiting structure in the armrest shell 1.

The locking unit is disposed in the accommodating cavity, and the locking unit mainly includes a ratchet 5, a rotating member 6 and a transmission member 7.

Specifically, the ratchet 5 is fixedly fitted on the pivot shaft 4, at least two ratchet teeth 501 are provided around the ratchet 5, and the armrest can have at least two fixed positions fixed to the backrest by engaging a pawl 602 described below with each ratchet tooth 501. In the present embodiment, two ratchet teeth 501 are provided on the circumference of the ring ratchet 5, and each ratchet tooth 501 is a plurality of ratchet teeth arranged in series on the circumference of the ring ratchet 5, so that the armrest can have a use position perpendicular to the backrest and a storage position stored on one side of the backrest after rotating around the pivot shaft 4, and the position of the armrest relative to the backrest can be adjusted in the use position and the storage position.

Still referring to fig. 3 and with reference to fig. 14, the rotating member 6 is rotatably disposed in the accommodating cavity, in this embodiment, the rotating center of the rotating member 6 is a rotating shaft 601 of the rotating member, one end of the rotating member 6 is provided with a pawl 602 disposed in cooperation with the ratchet 5, and the other end of the rotating member is connected to the transmission member 7 in an abutting manner. In this structure, can set firmly the rotation piece pivot 601 and hold the intracavity, make and rotate piece 6 and rotate the setting for rotating piece pivot 601, in addition, still can set firmly rotation piece 6 on rotating piece pivot 601 to make and rotate piece pivot 601 and can follow the rotation of rotation piece 6, and then rotate for handrail casing 1, the both ends of rotating piece pivot 601 can set up respectively on preceding installed part 801 and back installed part 802.

The transmission piece 7 is located and holds the intracavity, and follow-up in handrail casing 1 and rotate the setting, and because of transmission piece 7 along with handrail casing 1's rotation, rotate piece 6 can swing and cooperate or break away from the cooperation with ratchet 5 to make the handrail have the locking state that can fix relative the back or relative back pivoted unblock state.

Specifically, in this embodiment, the transmission member 7 includes a transmission member rotating shaft 701, and a toggle member 702 and a connecting member 703 that are fixedly disposed on the transmission member rotating shaft 701, wherein: the transmission member rotating shaft 701 is fixedly arranged on the mounting frame 8, one end of the toggle member 702 is connected with the rotating member 6, and the other end can be driven by external force to make the toggle member 702 swing. With the above arrangement, the toggle member 702 rotates around the transmission member rotating shaft 701, so that the pawl 602 of the rotating member 6 can be engaged with or disengaged from the ratchet 5.

In order to facilitate the installation of the first unlocking mechanism and the second unlocking mechanism, the mounting plate 12 is fixedly arranged in the accommodating cavity, and the first unlocking mechanism and the second unlocking mechanism are respectively arranged at two sides of the mounting plate 12, so that the installation of the first unlocking mechanism and the second unlocking mechanism is facilitated. The mounting plate 12 may be fixed by bolting, welding, etc., and is specifically fixed to the front or rear case 101.

Still referring to fig. 1 to 6 in combination with fig. 12, the aforementioned first unlocking mechanism mainly includes the first swinging member 9, the first link member 10, and the unlocking cord 13.

In a specific structure, the first swinging member 9 is rotatably disposed in the accommodating cavity, and is specifically rotatably disposed on the mounting plate 12, and a matching rotating shaft can be disposed on the mounting plate 12, so that the first swinging member 9 swings with respect to the mounting plate 12 about the rotating shaft.

The first connecting member 10 is connected between the first swinging member 9 and the transmission member 7, and specifically, the first connecting member 10 is a connecting rod having hooks at both ends thereof, and is matched with the connecting rod, a circular through hole for one hook to pass through is provided on the connecting member 703, and a strip-shaped hole for the other hook to pass through is provided on the first swinging member 9.

The unlocking pulling wire 13 specifically comprises a protective sleeve 1301, clamping pieces 1302 fixedly arranged at two ends of the protective sleeve 1301, and a pulling wire 1303 penetrating through the protective sleeve 1301. One of the clamping members 1302 is fixedly arranged on the mounting plate 12 through a stay wire fixing support, the other clamping member 1302 is fixedly arranged on the lower connecting plate of the angle adjuster through a stay wire fixing support, one end of a stay wire 1303 is connected with the other end of the first swinging member 9 relative to one end connected with the first connecting member 10, and the other end of the stay wire 1303 is connected with the backrest.

In this embodiment, a clip 1304 may be disposed at one end of the pulling wire 1303 connected to the backrest, and a receiving groove is disposed on the upper connecting plate 2 of the recliner corresponding to the clip 1304, and the clip 1304 is engaged with the receiving groove. With the above arrangement, the pull wire 1303 can drive the first swinging member 9 to swing along with the rotation of the backrest relative to the seat cushion, so that the armrest is switched from the locked state to the unlocked state.

The second unlocking mechanism mainly includes a driving member 14, a returning member 15, a second swinging member 16, a slider 17, a second link member 18, a third link member 19, a third swinging member 20, and a fourth link member 21.

In this embodiment, the effect of driving piece 14 is that order about driving piece 7 and swing, and concrete structure is equipped with the mounting hole in the one end of handrail casing 1 towards the locomotive, is provided with button trim 22 in the matching of this mounting hole, and the intracavity is held in locating to the one end of driving piece 14, and the other end stretches out outside handrail casing 1 by the mounting hole and constitutes the button. And the driving member 14 is connected with the second swinging member 16 and the third swinging member 20 respectively, and the second swinging member 16 and the third swinging member 20 swing reversely due to the reverse swinging of the driving member 14, so that the armrest can be switched from the locking state to the unlocking state.

The second swinging member 16 and the third swinging member 20 are substantially L-shaped, and the second swinging member 16 and the third swinging member 20 are rotatably provided in the accommodating chamber about respective rotation shafts, and are rotatably provided with respect to the mounting plate 12 about the rotation shaft provided on the mounting plate 12. The slider 17 slides and locates and hold the intracavity, and concrete structural, be provided with the slide rail on mounting panel 12, slider 17 slides in the slide rail and sets up, is equipped with three bar hole on slider 17 to be connected with second connecting piece 18, third connecting piece 19 and fourth connecting piece 21 respectively.

The second connecting piece 18, the third connecting piece 19 and the fourth connecting piece 21 are connected by connecting rods, both ends of each connecting rod are provided with hooks, the second connecting piece 18 is connected between the second swinging piece 16 and the sliding piece 17, the hook at one end of the second connecting piece is arranged in the circular through hole of the second swinging piece 16 in a penetrating mode, and the hook at the other end of the second connecting piece is arranged in the strip-shaped through hole of the sliding piece 17 in a penetrating mode; the third connecting piece 19 is connected between the sliding piece 17 and the transmission piece 7, a hook at one end of the third connecting piece is arranged in the strip-shaped through hole of the sliding piece 17 in a penetrating manner, and a hook at the other end of the third connecting piece is arranged in the circular through hole of the connecting piece 703 in a penetrating manner; the fourth connecting member 21 is connected between the third swinging member 20 and the sliding member 17, and a hook at one end thereof is inserted into the circular through hole of the third swinging member 20, and a hook at the other end thereof is inserted into the strip-shaped through hole of the sliding member 17.

The above structure is arranged such that the armrest is switchable between the locked state and the unlocked state by the swing actuation of the second swing member 16, and the armrest is switchable between the locked state and the unlocked state by the swing actuation of the third swing member 20. The two-way unlocking function of the armrest is realized because the reverse swing of the driving piece 14 can drive the second swinging piece 16 and the third swinging piece 20 to swing in the opposite direction.

The reset piece 15 is connected with the transmission piece 7 and is driven by the driving piece 14, and the reset piece 15 can store energy along with the switching of the armrest from the locking state to the unlocking state and release energy along with the switching of the armrest from the unlocking state to the locking state. Structurally, the reset element 15 includes a first torsion spring 23 sleeved on the rotating shaft of the transmission element 7, one end of the first torsion spring 23 is positioned with respect to the armrest housing 1, and the other end of the first torsion spring 23 follows the rotating element 6. In this embodiment, one end of the first torsion spring 23 is fixedly disposed on the toggle member 702, the other end of the first torsion spring 23 is blocked at one side of the transmission member rotating shaft 701, the first torsion spring 23 accumulates elastic potential energy in the process that the external force is transmitted to the transmission member 7 to unlock the armrest by the transmission member 7, and after the external force is stopped being applied, the first torsion spring 23 releases the elastic potential energy and resets the rest of the components.

In order to facilitate the automatic storage of the handrail, the accommodating cavity is internally provided with an elastic element, the elastic element is enabled to gather energy along with the switching of the handrail between two adjacent fixed positions along one direction, and the elastic element is enabled to release energy along with the reverse switching of the handrail between two adjacent fixed positions. In a specific structure, the elastic member is a second torsion spring 24 sleeved on the pivot shaft 4, one end of the second torsion spring 24 is arranged along the armrest, and the other end of the second torsion spring 24 is positioned relative to the backrest. In this embodiment, one end of the second torsion spring 24 is fixedly disposed on a damping member 25, and the other end of the second torsion spring 24 is blocked by one side of the mounting frame 8. The second torsion spring 24 accumulates elastic potential energy during the process of moving the armrest from the storage position to the use position, and after the backrest rotates relative to the armrest and is separated from the locking state of the storage position, the armrest can automatically rotate back to the storage position under the action of the second torsion spring 24.

For convenience of operation, the armrest of the present embodiment further includes a damping mechanism including a damping member 25 disposed in a positioning manner with respect to the ratchet 5, and a positioning member 26 disposed on the rotating member 6. In the specific structure, the positioning element 26 is a convex column fixedly arranged on the rotating element 6, the damping element 25 is fixedly arranged on the pivot shaft 4, and a positioning structure is arranged between the damping element 25 and the ratchet wheel 5 to keep the positions of the two parts relatively fixed. In this embodiment, the positioning structure includes a protrusion protruding from one side of the damping member 25 and a through hole matching with the protrusion and disposed on the ratchet 5.

An outer convex portion 2501 that can abut against the retainer 26 to maintain the unlocked state of the armrest and an inner concave portion 2502 that gives way to the retainer 26 to bring the armrest into the locked state are provided in the circumferential direction of the damper 25. In this embodiment, two concave portions 2502 are provided corresponding to the two ratchet teeth 501, respectively, and the convex portion 2501 is connected between the two concave portions 2502. When the armrest is in a locked state, the concave portion 2502 gives way to the positioning element 26, that is, the positioning element 26 can be embedded in the concave portion 2502, so that the pawl 602 of the rotating element 6 is in a position of being clamped with the ratchet 5; after the transmission member rotates to make the positioning member 26 abut against the external protrusion 2501, the armrest can be kept in the unlocked state even if no external force is applied, thereby improving the convenience of application.

Referring to fig. 7 to 9, fig. 7 is a schematic structural view of the armrest in a locked state and a schematic structural view of the armrest in a use position, where the driving element 14 is in a horizontal state at this time, fig. 8 is a schematic structural view of the armrest in an unlocked state by pulling the driving element 14 upward, and the third swinging element 20 swings counterclockwise to drive the sliding element 17 to slide leftward, and since the sliding element 17 is provided with a strip-shaped hole connected to the fourth connecting element 21 and the first swinging element 9 is provided with a strip-shaped hole connected to the first connecting element 10, the swinging of the driving element 7 is not affected.

Fig. 9 is a schematic structural diagram of the handle in the unlocked state by pulling the driving member 14 downward, and the second swinging member 16 swings clockwise to drive the sliding member 17 to slide leftward, and since the sliding member 17 is provided with a strip hole connected to the fourth connecting member 21 and the first swinging member 9 is provided with a strip hole connected to the first connecting member 10, the swinging of the driving member 7 is not affected.

Referring to fig. 10 to 13, wherein fig. 10 and 12 are schematic structural views of the armrest in the locked state, that is, the armrest is in the storage position, and fig. 11 and 13 are schematic structural views of the armrest in the unlocked state, as the backrest rotates and folds relative to the seat cushion, the unlocking pull wire 13 pulls the first swinging member 9 to swing, so that the transmission member 7 swings, and since the sliding member 17 is provided with the strip-shaped holes connected with the second connecting member 18 and the fourth connecting member 21, the swinging of the transmission member 7 is not affected.

The handrail can be unlocked in two directions and adjusted in a gear mode by arranging the locking unit, the first unlocking mechanism, the second unlocking mechanism and the like, and the handrail can be in an unlocking state by pulling the driving piece 14 upwards/downwards, so that the gear adjustment of the handrail at the use position can be realized by applying external force to the handrail; when external force is applied to fold the seat backrest, the armrest can realize an automatic storage function along with the forward tilting of the backrest, is locked at a storage position, and can automatically return to the storage position under the action of an elastic piece; in addition, the driving part 14 can realize a bidirectional unlocking function through up-down turning, when the handrail needs to be adjusted from the use position to the storage position, the driving part 14 is pulled upwards, and the handrail is unlocked and turned backwards; when the armrest needs to be adjusted to the use position at the storage position, the driving piece 14 is pulled downwards, the armrest is unlocked and turned forwards, convenience and delicacy in the adjustment process can be greatly improved, the automatic storage function of the armrest is realized, and the armrest is applied to a three-door vehicle, so that convenience in entering the vehicle by passengers in the back row can be improved.

In addition, the armrest is arranged on the seat, so that the interior trim central control space can be increased, and the space arrangement is greatly improved. In addition, the armrest is provided with a locking tooth mechanism at the storage position, so that the automatic unlocking of the seat armrest can be avoided in the driving process of a vehicle or the braking process and the vehicle collision.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. An armrest with an automatic stowing function, mounted on the backrest of a vehicle seat, with a pivot shaft (4) positioned on one side of the backrest, characterized in that it comprises:

the armrest shell (1) is arranged in a rotating mode relative to the backrest by taking the pivot shaft (4) as a rotating center, and an accommodating cavity is formed in the armrest shell (1);

the locking unit is arranged in the accommodating cavity and comprises a ratchet wheel (5) fixedly sleeved on the pivot shaft (4), a rotating piece (6) rotatably arranged in the accommodating cavity and a transmission piece (7) positioned in the accommodating cavity and rotationally arranged along with the armrest shell (1), one end of the rotating piece (6) is provided with a pawl (602) matched with the ratchet wheel (5), and the other end of the rotating piece is connected with the transmission piece (7) in an abutting mode; and because the transmission piece (7) rotates along with the armrest shell (1), the rotating piece (6) can swing to be matched with or separated from the ratchet wheel (5), so that the armrest has a locking state which can be fixed relative to the backrest or an unlocking state which can rotate relative to the backrest;

the first unlocking mechanism comprises a first swinging piece (9) rotatably arranged in the accommodating cavity, a first connecting piece (10) connected between one end of the first swinging piece (9) and the transmission piece (7), and an unlocking pull wire (13) connected to the other end of the first swinging piece (9); the unlocking pull wire (13) is connected with the backrest, and along with the rotation of the backrest relative to a seat cushion of the vehicle seat, the unlocking pull wire (13) can drive the first swinging piece (9) to swing so as to enable the armrest to be switched from a locking state to an unlocking state;

the second unlocking mechanism comprises a driving piece (14) for driving the driving piece (7) to swing, and a resetting piece (15) connected with the driving piece (7), and is connected with the driving piece (14) in a driving mode, and the resetting piece (15) can store energy along with the switching of the armrest from the locking state to the unlocking state and release energy along with the switching of the armrest from the unlocking state to the locking state.

2. The armrest with the automatic stowing function according to claim 1, characterized in that: reset piece (15) including the cover locate the epaxial first torsional spring (23) of pivot of driving medium (7), just the one end of first torsional spring (23) for handrail casing (1) location sets up, the other end follow-up of first torsional spring (23) in rotate piece (6) setting.

3. The armrest with the automatic stowing function according to claim 1, characterized in that: the second unlocking mechanism comprises a second swinging piece (16) rotatably arranged in the accommodating cavity, a sliding piece (17) slidably arranged in the accommodating cavity, a second connecting piece (18) connected between the second swinging piece (16) and the sliding piece (17), and a third connecting piece (703) connected between the sliding piece (17) and the transmission piece (7) and connected to the swinging of the second swinging piece (16) for driving, and the armrest can be switched between a locking state and an unlocking state.

4. The armrest with the automatic retraction function according to claim 3, characterized in that: the second unlocking mechanism comprises a third swinging piece (20) rotatably arranged in the accommodating cavity and a fourth connecting piece (21) connected between the third swinging piece (20) and the sliding piece (17), and is connected to the swinging drive of the third swinging piece (20), and the armrest can be switched between a locking state and an unlocking state.

5. The armrest with the automatic retraction function according to claim 4, characterized in that: the driving element (14) is connected with the second swinging element (16) and the third swinging element (20) respectively, and the second swinging element (16) and the third swinging element (20) swing reversely due to the reverse swinging drive of the driving element (14), so that the armrest can be switched from a locking state to an unlocking state.

6. The armrest with the automatic stowing function according to claim 1, characterized in that: at least two ratchet teeth (501) are arranged around the circumference of the ratchet wheel (5), and the armrest has at least two fixed positions fixed relative to the backrest due to the matching of the pawl (602) and each ratchet tooth (501).

7. The armrest with the automatic retraction function according to claim 6, characterized in that: an elastic piece is arranged in the accommodating cavity, and the elastic piece is enabled to gather energy along with the switching of the handrail between two adjacent fixing positions along one direction, and the elastic piece is enabled to release energy along with the reverse switching of the handrail between two adjacent fixing positions.

8. The armrest with the automatic stowing function according to claim 7, characterized in that: the elastic piece is a second torsion spring (24) sleeved on the pivot shaft (4), one end of the second torsion spring (24) follows the armrest, and the other end of the second torsion spring (24) is opposite to the backrest and is positioned.

9. The armrest with automatic stowing function according to claim 1, characterized in that the armrest further comprises:

damping mechanism, including for ratchet (5) location setting's damping piece (25), and set up in locating element (26) on rotating piece (6), and in the circumference of damping piece (25) be equipped with can with locating element (26) butt, in order to keep the outer convex part (2501) of the unblock state of handrail, and to locating element (26) give way, so that the handrail is in concave part (2502) of lock-up state.

10. The armrest with the automatic retraction function according to any one of claims 1 to 9, characterized in that: a mounting plate (12) is fixedly arranged in the armrest shell (1), and the first unlocking mechanism and the second unlocking mechanism are respectively arranged on two sides of the mounting plate (12).