CN210471575U - Multi-gear supporting and adjusting mechanism and adjustable seat - Google Patents

Abstract

An object of the utility model is to provide a simple structure and convenient to use's many gears support adjustment mechanism, a serial communication port, include: a substrate; a support plate; a support member having a support beam portion supporting the support plate at a different angle from the base plate; a gear forming member; and the gear control piece, wherein, the gear forming piece has the removal surface that bears the removal of supporting beam portion, be formed with a plurality of shelves grooves and a spacing portion, the gear control piece has first butt portion and a platform portion, the first butt portion of butt drives the gear control piece and removes when supporting beam portion removes, thereby let the platform portion at least with the removal surface parallel and level of the shelves groove position department that is closest to spacing portion when supporting beam portion arrival spacing portion, and then let the supporting beam portion move and cross this shelves groove at the platform portion surface when returning from spacing portion. The utility model also provides an adjustable seat containing the multi-gear supporting and adjusting mechanism.

Description

Multi-gear supporting and adjusting mechanism and adjustable seat

Technical Field

The utility model belongs to the daily necessities field relates to a many gears support adjustment mechanism and contain this many gears and support adjustable thing to sit on of adjustment mechanism.

Background

Some daily utensils have a support member, for example, a seat such as a chair has a backrest, which can support the waist and back of a user in a sitting posture, so that the user feels comfortable. Users usually adopt a comfortable posture when using the daily necessities, and accordingly, the supporting angles required by the users are different.

In order to adapt to different angles and thus to form sufficient supporting force, the prior art has angle-adjustable supporting mechanisms suitable for these daily necessities. For example, a recliner mechanism is provided between a seat cushion and a backrest of a car seat, and a user can manually or electrically adjust the angle of the backrest. The angle adjustment of the supporting and adjusting mechanism is free, but the supporting and adjusting mechanism is complex in structure, large in size and high in manufacturing cost, so that the supporting and adjusting mechanism is usually used on vehicles such as automobiles and train seats and is difficult to use in daily life. In contrast, there are some simple angle-adjustable supporting mechanisms in the prior art, for example, a seat plate and a back plate of a seat are connected through a rotating shaft, and then an angle adjustment is achieved by using a stay bar and a multi-gear member (for example, a gear member having a plurality of grooves corresponding to different angular gears) matched with the stay bar. The supporting mechanism and the seat with the supporting mechanism have the advantages of simple structure and low cost, but the use is inconvenient, and the user can adjust the angle only by operating with two hands after leaving the seat.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, a simple structure and convenient to use's many gears support adjustment mechanism and adjustable thing to sit on is provided, the utility model discloses a following technical scheme:

the utility model provides a many gears support adjustment mechanism, a serial communication port, include: a substrate; a support plate rotatably mounted on the base plate; a support member rotatably mounted on the base plate and having a support beam portion for supporting the support plate so as to support the support plate at different angles from the base plate; a gear forming member fixed to the support plate and having a plurality of support gears formed thereon, the support gears being arranged in a predetermined direction and corresponding to different angles between the base plate and the support plate; and a gear control part which controls the movement of the supporting cross rod part on the gear forming part so as to enable the supporting part to support the supporting plate at different supporting gears, wherein the gear forming part is provided with a moving surface for bearing the movement of the supporting cross rod part, the moving surface is provided with a plurality of gear grooves which respectively correspond to the supporting gears and can accommodate the supporting cross rod part and a limiting part corresponding to an unlocking gear for unlocking, the gear control part is movably arranged on the gear forming part along a preset direction and is provided with a first abutting part which can abut against the supporting cross rod part and is positioned at one end of the gear control part close to the limiting part, and a platform part which is far away from the limiting part and corresponds to the gear grooves, the supporting cross rod part abuts against the first abutting part when moving towards the limiting part along the preset direction so as to drive the gear moving control part to move, so that the platform part is at least flush with the moving surface at the position of the gear groove closest to the limiting part when the supporting cross rod And further the supporting beam part moves on the surface of the platform part to cross the stopping groove when returning from the limiting part.

The utility model provides a many gears support adjustment mechanism can also have such technical characteristic, wherein, the one end that spacing portion was kept away from to the gear control piece still has the second butt portion that can support horizontal pole portion looks butt, make this second butt portion of butt and drive the gear control piece and remove when supporting horizontal pole portion and removing to the direction of keeping away from spacing portion, thereby let platform portion in proper order with each grade groove removal surface looks parallel and level, and then let support horizontal pole portion cross each grade groove through platform portion in proper order.

The utility model provides a many gears support adjustment mechanism, can also have such technical feature, wherein, the gear control still has the recess that is located between first butt portion and the platform portion, the shape of this recess and the shape phase-match in shelves groove, when supporting the horizontal pole portion and remove and drive the gear control through the first butt portion of butt and remove along the predetermined direction, the recess aligns with each shelves groove along with the removal of removal control in proper order, make in case support horizontal pole portion stop to move, support horizontal pole portion just can follow the surface entering shelves groove of first butt portion and recess, thereby get into the support gear that corresponds.

The utility model provides a many gears support adjustment mechanism can also have such technical characteristic, and wherein, the quantity of recess is a plurality of and is not more than the quantity in shelves groove, and interval between the adjacent recess is the same with the interval between the adjacent shelves groove.

The utility model provides a many gears support adjustment mechanism can also have such technical characteristic, still includes: and a rail guide for providing a tending force to the support rail to cause the support rail to move into the stopper groove, so that the support rail automatically enters the stopper groove by the tending force when the groove is aligned with the stopper groove and the support rail moves to the stopper groove.

The utility model provides a many gears support adjustment mechanism can also have such technical feature, wherein, the horizontal pole guide is for fixing the hook-shaped on supporting the horizontal pole portion, and gear formation department is equipped with and extends and distribute the first magnet spare in each shelves groove position department at least along the predetermined direction, is fixed with second magnet spare on the hook-shaped, and first magnet spare passes through magnetic force inter attraction with second magnet spare to produce the tendency power.

The utility model provides a many gears support adjustment mechanism can also have such technical characteristic, wherein, still is fixed with second magnet spare on the gear control spare, and this second magnet spare passes through magnetic force inter attraction with first magnet spare for the gear control spare is adsorbed in gear formation spare department and can remove for the gear formation spare.

The utility model provides a many gears support adjustment mechanism can also have such technical characteristic, and wherein, first magnet spare is the magnetic metal piece, and second magnet spare is the permanent magnet.

The utility model provides a many gears support adjustment mechanism can also have such technical characteristic, and wherein, support control assembly still including covering the cover piece on the gear forms the piece.

The utility model provides a many gears support adjustment mechanism can also have such technical characteristic, and wherein, the horizontal pole guide is fixed on the cover piece and with the slice piece that supports horizontal pole portion and contact through many springs, and the spring is compression spring, applys the power towards second part direction on the horizontal pole guide to let the horizontal pole guide tend to power to supporting horizontal pole portion.

The utility model provides a many gears support adjustment mechanism can also have such technical characteristic, wherein, is equipped with the slot portion that extends along the predetermined direction on the gear forming piece, is equipped with the guide slot that extends along the predetermined direction in this slot portion, and the gear control passes through the movably setting on the gear forming piece of guide slot.

The utility model provides a many gears support adjustment mechanism can also have such technical characteristic, wherein, is equipped with the fixture block of embedding in the guide slot on the gear control for the gear control can be followed the movably setting of upper and lower direction on the gear forming part.

The utility model provides a many gears support adjustment mechanism can also have such technical feature, wherein, the inboard of guide slot still is equipped with the interior slot part corresponding with a grade groove, the degree of depth with the corresponding part in a grade groove of this interior slot part is less than the degree of depth in a grade groove, the both sides of platform portion are equipped with the third extension of taking on the guide slot, distance between the tip of these two third extensions is greater than the width of ditch groove portion for the gear control can lean on these two third extensions to slide on the guide slot.

The utility model provides a many gears support adjustment mechanism can also have such technical feature, wherein, the width of platform portion and first butt portion is less than the distance between the guide slot and is greater than the distance between the interior slot part simultaneously for support the axle that gear control piece formed through two extensions after the first butt portion of support beam portion drive reached a grade groove takes place to rotate, lets platform portion and first butt portion get into a grade groove, and then the guide supports beam portion and gets into a grade groove.

The utility model provides a many gears support adjustment mechanism can also have such technical characteristic, wherein, the length of platform portion is greater than the distance between the tip in the shelves groove of both sides on the predetermined direction for support the shifting surface parallel and level that lets platform portion and all shelves groove position departments when the horizontal pole portion reachs spacing portion, and then let support the horizontal pole portion and cross whole shelves grooves through platform portion.

The utility model provides a many gears support adjustment mechanism, can also have such technical characteristic, the cover piece, cover on gear formation, wherein, be equipped with a second extension that extends towards the cover piece on the first butt portion, be equipped with the preforming that extends towards gear control on the cover piece, this preforming crimping is on the second extension, thereby the production pushes the part of at least including first butt portion of gear control towards the tendency power of gear formation orientation, this tendency power pushes first butt portion to interior slot part department when gear control is supported the crossbar portion and is driven and reach a grade groove department and promote, and then let platform portion slope and guide support crossbar portion and get into a grade groove.

The utility model provides a many gears support adjustment mechanism can also have such technical feature, and wherein, support piece still has two connecting rod portion that extend respectively from supporting horizontal pole portion both sides, and the tip of keeping away from supporting horizontal pole portion of these two connecting rod portions articulates on the base plate.

The utility model also provides a thing to sit on with adjustable, a serial communication port, include: a seat plate corresponding to the buttocks of the user; a waist plate corresponding to a waist of a user; and a multi-stage support adjustment mechanism as in any one of the above, wherein one of the base plate and the support plate is mounted on or integrally formed with the seat plate, and the other of the base plate and the support plate is mounted on or integrally formed with the lumbar plate.

Utility model with the functions and effects

According to the utility model provides a regulating mechanism is supported to many gears, because be formed with the shelves groove that corresponds with each support gear on the gear form and the spacing portion that corresponds with the unblock gear, the movably setting of removal control is on the gear form, this removal control still has the platform portion that forms the removal surface looks parallel and level with the gear and can support horizontal pole portion butt and be located the first butt portion that is close to spacing portion one end with supporting horizontal pole portion, consequently, when supporting horizontal pole portion from the top down to spacing portion, support horizontal pole portion can drive to spacing portion department with the mode of the first butt portion of butt control will be removed, let platform portion align with the shelves groove that is closest to spacing portion, therefore, when supporting horizontal pole portion from spacing portion return (when upwards moving down promptly), this support horizontal pole portion is blockked and can not get into this shelves groove by the platform portion. Namely, after passing through all the supporting gears, the supporting cross rod part does not enter the corresponding gear again when returning from the unlocking gear; correspondingly, according to the utility model provides an adjustable sitting tool, owing to contain aforementioned many gears and support adjustment mechanism, and seat and base plate integrated into one piece, waist board and backup pad integrated into one piece, when consequently the user used this adjustable sitting tool, need not manual dial support piece from shelves groove, but only stir the waist board just can with the waist board unblock and readjust the gear.

Drawings

Fig. 1 is a schematic structural view of an adjustable seat according to a first embodiment of the present invention;

fig. 2 is a schematic side view of an adjustable seat according to a first embodiment of the present invention;

fig. 3 is an exploded view of an adjustable seat according to a first embodiment of the present invention;

fig. 4 is a schematic cross-sectional structural view of a multi-gear supporting and adjusting mechanism according to a first embodiment of the present invention;

fig. 5 is a schematic structural view of a gear forming member according to a first embodiment of the present invention;

fig. 6 is a schematic structural diagram of a mobile control member according to a first embodiment of the present invention;

fig. 7 is a schematic structural view of a cross bar guide according to a first embodiment of the present invention;

fig. 8 is a schematic structural view of an adjustable seat according to a first embodiment of the present invention in different states;

FIG. 9 is a partial schematic structural view of a multi-position supporting and adjusting mechanism of the adjustable seat shown in FIG. 8;

fig. 10 is a schematic cross-sectional structural view of a multi-gear supporting and adjusting mechanism according to a second embodiment of the present invention;

fig. 11 is a schematic sectional structure view of a multi-gear supporting and adjusting mechanism according to a third embodiment of the present invention.

Fig. 12 is a schematic structural diagram of a third gear control component according to the embodiment of the present invention;

fig. 13 is a schematic structural view of a gear forming member according to a third embodiment of the present invention;

fig. 14 is a partial structural schematic view of a multi-gear supporting and adjusting mechanism of an adjustable seat according to a third embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings and examples.

In the following embodiments, the directions are described with reference to the direction in which the user sits on the adjustable seating device, i.e., the front direction refers to the direction in which the user faces upward, the rear direction refers to the direction in which the user faces backward, the up-down direction refers to the up-down direction of the user, and the left-right direction refers to the left-right direction of the user.

< example one >

Fig. 1 is a schematic structural view of an adjustable seat of the first embodiment of the present invention, fig. 2 is a schematic structural view of a side view of the adjustable seat of the first embodiment of the present invention, and fig. 3 is a schematic structural view of an explosion of the adjustable seat of the first embodiment of the present invention.

As shown in fig. 1 to 3, the adjustable sitting device 100 of the present embodiment includes a sitting plate 10, a waist plate 20 and a multi-gear supporting and adjusting mechanism 30.

Wherein, the sitting plate 10 corresponds to the buttocks of the user and supports the buttocks of the user when in use. In this embodiment, the lower surface of the seat plate 10 is a plane, so the adjustable seat 100 of this embodiment can be flatly placed on other adjustable seats with supporting legs through the seat plate 10 and used in cooperation with these adjustable seats.

The waist panel 20 corresponds to the waist of the user and serves to support the waist of the user when in use.

In this embodiment, the waist panel 20 is formed in an arc shape corresponding to the waist of the human body.

Fig. 4 is a schematic cross-sectional structural view of a multi-gear supporting and adjusting mechanism according to a first embodiment of the present invention.

As shown in fig. 1 to 4, the multi-shift-position supporting adjustment mechanism 30 includes a base plate 31, a support plate 32, a support member 33, a shift position forming member 34, a shift position control member 35, a cross-bar guide 36, a cover member 37, a first magnet member 38, and a second magnet member 39.

The base plate 31 is integrally formed with the seat plate. The upper portion of the supporting plate 32 is integrally formed with the waist plate, and the lower portion is two connecting portions 321 extending downward, and the two connecting portions 321 are mounted on the base plate 31 through the rotating shaft 311, so that the supporting plate 32 can rotate relative to the base plate 31, and accordingly, the waist plate 20 can also rotate relative to the seat plate 10.

The support 33 serves to support the support plate 32 such that the support plate 32 is stabilized at a certain angle after rotating with respect to the base plate 31. At this time, the lumbar plate 20 is also stabilized at a certain angle with respect to the seat plate 10, and the lumbar of the user can be supported at this angle.

The support member 33 has a support beam portion 331 supporting the support plate 32, and the support beam portion 331 is provided with a connecting rod portion 332 at each of both ends thereof. The ends of the connection rods 332 remote from the support cross rods 331 are respectively fitted into the fitting hole portions 312 provided on the base plate 31 so that the support member 33 can be rotated relative to the base plate 31, thereby supporting the support plate 32 at different positions by the support cross rods 331.

Specifically, the two mounting hole portions 312 are disposed opposite to each other, and the lower ends of the two connecting rods 332 each have an extending portion extending horizontally outward, and the extending portions are respectively inserted into the mounting hole portions 312, so that the support member 33 can rotate about a line connecting the two mounting hole portions 312.

In addition, since the mounting hole 312 for mounting the connecting rod 332 is located at a position further rearward on the base plate 31 than the rotating shaft 311 for mounting the connecting portion 321 of the supporting plate 32, when the user sits on the adjustable seating furniture 100 and leans his or her waist onto the lumbar plate 20, the supporting member 33 can support the supporting plate 32 and the lumbar plate 20 from the rear of the supporting plate 32, thereby supporting the lumbar plate 20.

In this embodiment, the supporting beam 331 supports the supporting plate 32 at a plurality of different supporting positions, and accordingly, the lumbar plate 20 is supported by the supporting beam 331 at a plurality of stable angles. That is, the support crossbar 331 has a plurality of positions for supporting the lumbar plate 20.

Fig. 5 is a schematic structural diagram of a gear forming member according to a first embodiment of the present invention.

As shown in fig. 3 to 5, the stopper forming member 34 is fixed to the rear side surface of the support plate 32 by bolts, and a plurality of stopper grooves 341 are formed in a top-down direction on a surface (i.e., a moving surface) away from the support plate 32. The support beam 331 is in contact with a moving surface, and can move up and down along the moving surface, thereby entering different notches 341.

In this embodiment, the number of the notches 341 is four. Each of the notches 341 is semicircular in shape when viewed from the side, and has a diameter matching that of the support beam portion 331 so that the support beam portion 331 can be received in each of the notches 341 when the support beam portion 331 enters the notches.

Referring to fig. 2 and 5, since the supporting member 33 supports the supporting plate 32 from the rear, when the supporting crossbar 331 is received in the slot 341, the included angle between the connecting rod 332 and the supporting plate 32 is acute, the force generated by the user leaning against the lumbar plate 20 is applied to the supporting crossbar 331 through the supporting plate 32 and the position forming member 34, so that the supporting crossbar 331 and the inner surface of the slot 341 are in close contact with each other, and a triangular stressed structure is formed among the supporting plate 32, the supporting member 33 and the base plate 31, so that even if the user leans the waist back by force, the supporting plate 32 and the supporting member 33 do not move relatively (accordingly, the angle of the lumbar plate 20 is not changed). In this state, the position of the supporting beam portion 331 is restricted by the stopper groove 341 and cannot move upward out of the stopper groove 341, that is, the supporting beam portion 331 is restricted by the stopper groove 341.

Thus, the respective notches 341 correspond to a plurality of positions at which the support crossbar 331 can be restricted; since the supporting crossbar 331 is restrained by the different notches 341, it supports the supporting plate 32 and the lumbar plate 20 at different angular positions accordingly, and thus each notch 341 actually corresponds to a different supporting notch.

As described above, due to the restriction of the stopping groove 341, the supporting plate 32, the supporting member 33 and the base plate 31 form a triangular force-receiving structure when in use, so that the supporting beam portion 331 cannot move upward out of the corresponding stopping groove 341 by applying a backward force to the lumbar plate 20. However, when the user slightly leans forward the upper body so that the waist no longer leans on the lumbar plate, and pulls forward the lumbar plate 20 with his or her hands, the support crossbar 331 moves downward with respect to the support plate 32 and the lumbar plate 20, and leaves the stopper groove 341.

In this embodiment, the lower end of the gear forming member 34 has a limiting portion 342, and the limiting portion 342 is a protrusion extending outward from the surface of the gear forming member 34 away from the supporting plate 32, and when the supporting cross rod portion 331 moves downward along the surface of the gear forming member 34 to reach the limiting portion 342 at the lower end, the supporting cross rod portion 331 is limited by the limiting portion 342 and cannot move downward. In this state, when the user stops the operation of pushing the lumbar plate 20 forward and pushes the lumbar plate 20 backward, the support lever 331 moves upward relative to the lumbar plate 20 and the support plate 32 according to the operation of the user and leaves the stopper 342 because the stopper 342 does not have a recessed portion such as the stopper groove 341. Thus, the stopper 342 also corresponds to a shift position, i.e., an unlock shift position.

In addition, the upper end of the shift position forming member 34 has a limit protrusion 343 for blocking the support beam 331 from further moving upward after reaching the uppermost position.

Fig. 6 is a schematic structural diagram of a movement control member according to a first embodiment of the present invention.

As shown in fig. 3, 5 and 6, the gear position forming member 34 is provided with a groove 344 at a middle portion thereof, the groove 344 extends in the vertical direction, an upper end thereof extends to the position-limiting protrusion 343, and a lower end thereof extends to the position-limiting portion 342. The gear position control member 35 has a width matching the width of the groove portion 344 and is accommodated in the groove portion 344, so that the gear position control member 35 can move in the groove portion 344 in the up-down direction. Further, since the groove 344 divides the stopper forming member 34 into two parts, each stopper groove 341 is actually formed of two groove portions that are respectively located in one part of the stopper forming member 34 divided by the groove 344.

A surface of the shift position control member 35 close to the support crossbar portion 331 is provided with a first abutting portion 351, a groove 352, a platform portion 353, and a second abutting portion 354 which are sequentially arranged from bottom to top. Since the position restricting portion 342 is located at the lower end of the position restricting member 35 while the position restricting member 35 is located in the groove portion 344 in the intermediate portion of the position forming member 34, the first abutting portion 351 is located at an end (i.e., a lower end) close to the position restricting portion 342 while the second abutting portion 354 is located at an end (i.e., an upper end) remote from the position restricting portion 342.

The position control member 35 has a thickness such that when it is placed in the groove portion 344, the first and second abutment portions 351 and 354 project outwardly with respect to the moving surface of the position forming member 34, while the surface of the land portion 353 is flush with the moving surface with respect to which the groove 352 is recessed inwardly. The recess 352 is shaped and sized to match the notch 341 so that when the shift position control member 35 is moved to align the recess 352 with the notch 341, the support crossbar 331 can enter the notch 341, and when the shift position control member 35 is moved to align the platform 353 with the notch 341, the surface of the platform 353 is flush with the moving surface of the notch 341 (i.e., the moving surface portions of the upper and lower sides of the notch 341), and the support crossbar 331 is blocked by the platform 353 and can only move on the surface of the platform 353 and cannot enter the notch 341. In addition, the surface of the portion of the groove 352 adjacent to the first abutment 351 is smoothly transitioned.

In this embodiment, the number of the grooves 352 is one, and the length (i.e., the dimension in the up-down direction) of the land 353 is larger than the diameter of the stop groove 341.

Fig. 7 is a schematic structural view of a cross bar guide according to a first embodiment of the present invention.

As shown in fig. 7, in the present embodiment, the rail guide 36 is a hook, and a hook portion thereof is fixed to the support rail 331 so as to be fixed to the support rail 331.

As shown in fig. 1 to 4, a cover member 37 covers the shift position forming member 34, and both ends thereof are fixed to the support plate 32 by fixing members such as bolts for preventing the shift position control member 35, the cross bar guide 36, and the like from falling off.

The first magnet member 38 is in the shape of a sheet, is disposed in the groove 344 and at the bottom of the groove 344, and has a length and a width matching the groove 344, so that it also extends in the vertical direction and has upper and lower ends respectively extending to the uppermost retaining groove 341 and the stopper portion 342.

The second magnet members 39 are cylindrical, and two of the second magnet members 39 in this embodiment are fixed to the cross bar guide 36 and the shift position control member 35, respectively.

In this embodiment, the first magnet member 38 is a magnetic metal sheet which can attract the permanent magnet, but has no magnetism; the second magnet piece 39 is a permanent magnet that has magnetism and is capable of attracting the magnetic metal sheet. Thus, the shift position control member 35 is attracted to each other by the magnetic force between the first and second magnet members 38 and 39, and is thus movably fixed in the groove portion 344.

Similarly, the second magnet piece 39 of the rail guide 36 is magnetically attracted to the first magnet piece 38, so that the rail guide 36 applies a force to the support rail 331 in a direction toward the shift position forming member 34. When the support beam 331 moves to the position of the stop groove 341 and is not obstructed by the platform 353, the force will cause the support beam 331 to tend to move into the stop groove 341, thereby automatically entering the stop groove 341 without the user having to toggle the support member 33.

In this embodiment, the second magnet member 39 of the rail guide 36 is exposed from the surface of the rail guide 36 adjacent to the first magnet member 38, and when the support rail 331 enters the slot 341, the surface of the second magnet member 39 contacts the first magnet member 38, so that the second magnet member 39 slightly collides with the surface of the first magnet member 38 to generate a sound as soon as the support rail 331 enters the slot 341, which can indicate to the user that the corresponding support position has been entered.

In addition, when the support beam portion 331 moves on the moving surface or moves on the surface of the platform portion 353, since the support beam portion 331 does not enter the notch 341, there is a certain distance between the second magnet piece 39 and the first magnet piece 38 on the beam guide 36. At this time, the second magnet piece 39 on the crossbar guide 36 is still attracted to the first magnet piece 38 to generate a force that causes the support crossbar portion 331 to always have a tendency to move toward the first magnet piece 38, so that the support crossbar portion 331 always abuts on the moving surface or the surface of the platform portion 353.

The working principle of the adjustable sitting tool 100 of the present embodiment is described below with reference to the accompanying drawings.

Fig. 8 is a schematic structural view of an adjustable seat according to a first embodiment of the present invention in different states, and fig. 9 is a schematic partial structural view of a multi-gear supporting and adjusting mechanism of the adjustable seat in different states of fig. 8. In fig. 8 and 9, arrows D1 and D2 respectively indicate the directions in which the user pulls the waist plate 20 to rotate, and S1, S2, S3 and S4 respectively indicate different states of the adjustable seating furniture 100.

As shown in fig. 8 and 9, the state S1 is the state when the adjustable seat 100 is in one supporting gear. In this state, the support crossbar 331 is positioned in one of the notches 341 to support the support plate 32 and the lumbar plate 20 at a fixed angle. Since there are a plurality of the shift grooves 341 and the corresponding support shift positions, there are actually four states of the S1, only one of which is shown in the figure.

When the user pulls the lumbar plate 20 forward, the lumbar plate 20 rotates forward to move the support crossbar portion 331 downward relative to the support plate 32. When the supporting beam 331 moves downward to the first abutting portion 351, the supporting beam 331 abuts against the first abutting portion 351 to move the shift position control member 35 downward, and when the groove 352 is aligned with the next shift position 341, the supporting beam 411 enters the shift position 341, that is, the next shift position, because the supporting beam 331 has a tendency to enter the shift position 341 due to the attraction force between the second magnet piece 39 and the first magnet piece 38 on the beam guide 36. In addition, since the surface of the portion of the groove 352 adjacent to the first contact portion 351 is smoothly transited, the portion of the supporting beam 331 contacting the first contact portion 351 can smoothly slide into the groove 352 along the surface of the adjacent portion, which corresponds to the stopper groove 341 aligned with the groove 352.

After entering the next supporting gear, if the user continues to shift the lumbar plate 20 forward, the supporting crossbar 331 can continue to enter the next supporting gear according to the above process until the supporting crossbar 331 moves downward to the limiting portion 342 and is limited by the limiting portion 342, and at this time, the adjustable sitting device 100 is in the state of S2.

Because the position-limiting portion 342 has no stopping groove 341, the supporting crossbar portion 331 cannot enter the supporting position, and cannot move downward, when the user looses his hand, the lumbar plate 20 and the supporting plate 32 slightly rotate backward due to the gravity (the user may also pull the lumbar plate 20 backward by his hand to rotate it backward, or lean his waist against the lumbar plate 20 to rotate the lumbar plate 20 backward by applying a force to his waist), so that the supporting crossbar portion 331 moves upward relative to the supporting plate 32.

When the supporting beam portion 331 moves upward to the second abutting portion 354, it abuts against the second abutting portion 354 and drives the shift position controlling member 35 to move upward, and this moving process state is shown as S3. In this state, since the supporting beam 331 contacts the platform 422, when the supporting beam 331 moves to each of the notches 341, the supporting beam 331 cannot enter the notch 341 due to the blocking of the platform 422, and thus moves upward to the uppermost position-limiting protrusion (corresponding to the first supporting position) beyond each notch 341, so that the adjustable seat 100 reaches the state of S4, i.e., the reset state.

In this case, the user can shift the waist panel 20 forward again to make the supporting beam 331 enter the respective stopping grooves 341 in sequence, and stop shifting when the user feels the angle is appropriate, so that the supporting beam 331 enters the corresponding stopping groove 341 and is limited in the stopping groove 341, i.e., the adjustable seat 100 returns to the different S1 states.

In the above process, after the supporting beam 331 reaches the limiting portion 342 and cannot move further downward, the user can shift the lumbar plate 20 backward to move the supporting beam 331 to the uppermost limiting protrusion to make the adjustable seat reach the state of S4, so as to start adjusting from the uppermost supporting gear. On the other hand, when the adjustable seating furniture 100 is in the state of S3, the user can stop the backward movement and move the lumbar plate 20 forward again at any time during the process of moving the lumbar plate 20 backward, in this case, the supporting crossbar 331 will move downward from the current position and disengage from the second abutting portion 354 and the platform portion 353. If the recess 352 is aligned with a certain gear slot 341, the supporting rod 331 enters the gear slot 341 and stops at the corresponding supporting gear; if the groove 352 is not aligned with any of the slots 341, the supporting rod 331 moves along the moving surface to the first abutting portion 351 and abuts against the first abutting portion 351, so as to drive the shift position controlling member 35 to move downward until the groove 352 is aligned with a slot 341 and then enters the slot 341. Therefore, the adjustable seat 100 of the present embodiment can perform halfway adjustment, that is, the backward shifting motion can be stopped at any time in the middle of the adjusting motion of shifting the lumbar plate 20 backward, and the lumbar plate 20 is shifted forward again to let the supporting beam 331 enter the closest supporting gear.

Effects and effects of the embodiments

According to the multi-gear supporting and adjusting mechanism provided by the embodiment, since the gear forming member is formed with the gear grooves corresponding to the supporting gears and the limiting parts corresponding to the unlocking gears, the movable control member is movably arranged on the gear forming member, the movable control piece is also provided with a platform part which is flush with the movable surface of the gear forming piece and a first abutting part which can abut against the supporting cross rod part and is positioned at one end close to the limiting part, therefore, when the supporting cross rod part moves to the limiting part from top to bottom, the supporting cross rod part can drive the movable control part to the limiting part in a mode of abutting against the first abutting part, so that the platform part is aligned with the baffle groove closest to the limiting part, the surface of the platform part is flush with the moving surface of the baffle groove, therefore, when the supporting cross rod part returns from the limiting part (namely moves from bottom to top), the supporting cross rod part is blocked by the platform part and cannot enter the blocking groove. Namely, after passing through all the supporting gears, the supporting cross rod part does not enter the corresponding gear again when returning from the unlocking gear; accordingly, according to the adjustable seat provided by the embodiment, since the adjustable seat comprises the multi-gear supporting and adjusting mechanism of the embodiment, the seat plate is integrally formed with the base plate, and the waist plate is integrally formed with the supporting plate, when a user uses the adjustable seat, the user does not need to manually pull out the supporting member from the gear groove, and can unlock the waist plate and readjust the gear by simply pulling the waist plate.

Furthermore, the end of the mobile control piece far away from the limiting part in the embodiment is also provided with a second abutting part which can abut against the supporting cross rod part, so that when the supporting cross rod part returns from the limiting part (moves from bottom to top), the mobile control piece is driven to move along with the supporting cross rod part all the time, the platform part always blocks the supporting cross rod part from entering the baffle groove, and the supporting cross rod part can return to the uppermost end without entering any baffle groove. In addition, the platform part and the first abutting part are provided with grooves matched with the gear grooves in shape, and the connecting parts between the grooves and the first abutting part are in smooth transition, so that when the supporting cross rod part abuts against the first abutting part and drives the movable control part to move downwards, the grooves are sequentially aligned with the gear grooves, the supporting cross rod part sequentially enters the gear grooves, and the adjustable seat is adjusted to support gears.

The multi-stage support adjustment mechanism of an embodiment further includes a rail guide that applies a force to the support rail in a direction toward the stage forming member and the lumbar plate, the force enabling the support rail to automatically enter the stage groove when the support rail is moved to the stage groove and the groove is aligned with the stage groove.

Generally speaking, in the multi-gear supporting and adjusting mechanism of the embodiment, the gear forming part, the moving control part and the cross bar guide part are mutually matched, so that a user only needs to shift the waist board forwards or backwards when adjusting the gears, and the adjusting direction between the supporting gears is opposite to the resetting direction (namely, the adjusting direction of the supporting gears is that the supporting cross bar part moves from top to bottom and corresponds to the situation that the user shifts the waist board forwards, and the resetting direction is that the supporting cross bar part moves from bottom to top and corresponds to the situation that the user shifts the waist board backwards or leans against the waist board to rotate the waist board backwards), so that the user can adjust or reset the supporting gears without complicated operation, and the operation is simple.

In addition, the force applied to the supporting cross rod part by the cross rod guide part is realized by the attractive force between the magnetic parts, and the combination between the moving control part and the gear forming part is also realized by the attractive force between the magnetic parts, so that additional mechanically connected parts or structures are not required to be arranged between the parts, the structure is relatively simple, and the manufacturing is easier.

< example two >

In the second embodiment, the same components as those in the first embodiment are given the same reference numerals, and the same description thereof will be omitted.

Fig. 10 is a schematic cross-sectional structural view of a multi-gear supporting and adjusting mechanism according to the second embodiment of the present invention.

As shown in fig. 10, in the second embodiment, the multi-position supporting and adjusting mechanism 30 includes a base plate 31 (not shown), a support plate 32, a support member 33, a position forming member 34, a position control member 35, a cross bar guide 36, a cover 37, and a spring 41.

The main difference between this embodiment and the first embodiment is that the tending force on the support beam portion 331 in the direction toward the shift position forming member 34 and the support plate 32 is not provided by the mutual attraction force between the magnet members, but is provided by the elastic deformation force of the spring.

Specifically, the rail guide 36 of the present embodiment is a sheet member fixed to the cover member 37 by a plurality of springs 41, and the sheet member is in contact with the support rail 331 and has an upper end near the limit projection 343 and a lower end near the limit part 342. The springs 41 are compression springs that apply a force to the cross bar guide 36 in a direction toward the support plate 32, which in turn causes the cross bar guide 36 to press against the surface of the support cross bar portion 331, which in turn presses the support cross bar portion 331 against the moving surface of the shift position providing member 41. Thus, the supporting beam 331 can only move along the moving surface, and automatically enters the notch 341 by the force of the spring and the beam guide 36 when reaching the notch 341.

In addition, in the present embodiment, the shift position control member 35 is not disposed in the groove portion 344 by the attractive force of the first magnet member 38 and the second magnet member 39, but is movably disposed in the groove portion 344 through the guide groove 345. Specifically, the inner side surface of the groove portion 344 is provided with a guide groove 345 extending in the up-down direction, the guide groove 345 being formed by sinking the surface of the groove portion 344, so that the cross-section thereof is "concave"; the shift position control member 35 is provided with a latch fitting in the guide groove 345 so that the shift position control member 35 can be movably disposed in the groove portion 344 in the up-down direction.

In contrast to the first embodiment, in this embodiment, the urging force for urging the support beam 331 to move along the moving surface and into the notch is provided by the compression spring and the plate member contacting the support beam 331, and the spring may be weakened in elasticity during long-term use, and thus the service life is relatively short. However, since the spring is slightly less expensive than the permanent magnet (especially, a ferromagnetic permanent magnet), the manufacturing cost is relatively low.

Similarly, the gear position control member 35 is not attracted by the magnetic member, but fixed in the groove 344 by the guiding groove and locking block structure, so that the mechanical structure has a relatively short service life, but does not need a magnetic metal sheet or a permanent magnet, thereby reducing the manufacturing cost.

< example three >

In the third embodiment, the same components as those in the first embodiment are given the same reference numerals, and the same description thereof will be omitted.

Compared with the first embodiment and the second embodiment, the present embodiment is different mainly in the structure of the shift position control member 35 and the corresponding manner of guiding the supporting cross bar portion 331 into the gear groove 341. In this embodiment, the shift position control member 35 is not formed with the recess 352 or the like, which guides the support beam portion 331 into the shift groove 341 in such a manner that the recess 352 is aligned with the shift groove 341, but in such a manner that the shift position control member is turned. The specific structure and operation principle are described below with reference to the accompanying drawings.

Fig. 11 is a schematic sectional structure view of a multi-gear supporting and adjusting mechanism according to a third embodiment of the present invention.

As shown in fig. 11, the multi-shift-position supporting adjustment mechanism 30 of the third embodiment includes a base plate 31 (not shown), a support plate 32, a support member 33, a shift-position forming member 34, a shift-position control member 35, and a cover member 37.

Fig. 12 is a schematic structural diagram of a gear control member according to a third embodiment of the present invention.

As shown in fig. 11 and 12, the surface of the shift position control member 35 close to the support crossbar portion 331 is provided with a first abutting portion 351, a platform portion 353, and a second abutting portion 354 which are arranged in this order from the bottom up.

In this embodiment, the first abutting portion 351 is provided with a first extending portion 355 extending in a direction away from (i.e., downward of) the terrace portion 353 and a second extending portion 356 extending toward the cover 37, the terrace portion 353 is provided at both sides thereof with a third extending portion 357 extending laterally, and the second abutting portion 354 is provided at an end thereof with a fourth extending portion 358 extending in a direction toward the first abutting portion 351. Thus, the shift position control member 35 as a whole assumes a nearly open-ring-like configuration.

In addition, the third extending portions 357 are located at positions of the platform portion 353 close to the second abutting portions 354, and a first projection 359 having a triangular cross-sectional shape is further provided at an end of the second extending portion 356.

That is, in contrast to the shift position control member 35 of the first embodiment, the shift position control member 35 of the present embodiment does not have the recess 352, but has the first extension 355, the second extension 356, the third extension 357 and the projection 359. Accordingly, without the groove 352, the first abutment 351 and the land 353 are directly connected to each other, and the connection portion thereof presents a smoothly transitioned surface.

In addition, the terrace portion 353 of the present embodiment has a long length, which is longer than the distance between the upper end of the uppermost rib 341 and the lower end of the lowermost rib 341.

Fig. 13 is a schematic structural view of a gear forming member according to a third embodiment of the present invention.

As shown in fig. 11 and 13, the stopper forming member 34 according to the third embodiment is formed with two stopper grooves 341, and a groove portion 344 extending in the longitudinal direction (i.e., the vertical direction) is provided in an intermediate portion thereof. The groove 344 divides the stopper forming member 34 into two parts, and inner side edges (i.e., edges adjacent to the groove 344) of the two parts are partially formed with guide grooves 345; the guide groove 345 is formed by depressing the inner side edges of the two portions of the shift position forming member 34, respectively, so that the sectional shape thereof is L-shaped, unlike the second embodiment.

The inner sides of the two guide grooves 345 are respectively provided with an inner groove 346 corresponding to the stop groove 341, and the inner groove 346 is formed by further sinking the inner side edges of the two portions of the shift position forming member 34 and has an L-shaped section. In addition, the depth of the portion of the inner groove portion 346 corresponding to the notch 341 (i.e., the distance between the deepest depression of the portion corresponding to the notch 341 and the surface of the step forming member 34) is lower than the depths of the two notches 341, and the depth of the lower end portion (the end portion near the stopper portion 342) of the inner groove portion 346 is shallower.

In this embodiment, the distance between the ends of the two third extensions 357 is greater than the width of the groove 344, and the two third extensions 357 ride on the guide groove 345, so that the shift position control member 35 can slide on the guide groove 345 by the third extensions 357, and thus can be movably disposed in the groove 344. The shape of the slot 341 of this embodiment is different from the first two embodiments, specifically, the upper surface of the slot 341 is arc-shaped, and the lower surface extends obliquely downward, which makes it easier to slide out from the lower surface of the slot 341 when the supporting beam 331 moves downward, and thus to leave the slot 341.

Further, the width of the shift position control member 35 (including the width of the terrace portion 353 and the first abutting portion 351) is smaller than the distance between the guide grooves 345 and is larger than the distance between the inner groove portions 346, so that when moving to the boundary (i.e., the point X in the drawing) between the inner groove portions 346 and the guide grooves 345, the terrace portion 353 and the first abutting portion 351 can move along the inner groove portions 346 to enter the shift grooves 341; in contrast, the third extension 357 cannot move along the inner groove 346, but only along the guide groove 345, which cannot enter the stopper groove 341.

The surfaces of the third extensions 357 adjacent to the guide grooves 345 are curved, so that the shift position control member 34 can also rotate about the axis defined by the two third extensions 357. That is, when the shift position control member 34 moves to the point X, the shaft formed by the two third extending portions 357 rotates, so that the terrace portion 353 and the first contact portion 351 enter the blocking groove 341, and at the same time, the third extending portions 357 still ride on the guide grooves 345.

As shown in fig. 11, the cover member 37 of this embodiment is provided with a pressing piece 371 extending toward the second extending portion 356, and the end of the pressing piece 371 is further provided with a second protrusion 372 having a polygonal cross-section. The pressing piece 371 and the second extending portion 356 are pressed against each other, and both have a certain elasticity, so that the force of the pressing piece 371 pressing on the second extending portion 356 forms a tending force to push the lower portion of the position control member 35 (i.e., the second extending portion 356, the first abutting portion 351, etc.) toward the position forming member 34.

Fig. 14 is a partial structural schematic view of a multi-gear supporting and adjusting mechanism of an adjustable seat according to a third embodiment of the present invention. In fig. 14, the supporting plate 32 is omitted, and S5, S6, S7 and S8 correspond to different states of the adjustable sitting tool 100, respectively.

As shown in fig. 14, S5 shows a state where the support lever 331 is located in the upper notch 341, and S6 shows a state where the support lever 331 is located in the lower notch 341. Each of the gear slots 341 corresponds to a support gear position, and therefore S5 and S6 are both states of the adjustable seat 100 in the support gear position, which is equivalent to the S1 state of the first embodiment.

In the state of S5, the supporting crossbar 31 and the first contact portion 351 are both located in the upper notch 341. When the user pulls the lumbar plate 20 forward to rotate the lumbar plate 20 forward according to the direction D1 shown in fig. 8, the supporting rod 31 moves downward along the guiding groove 345, and at the same time, the supporting rod 31 abuts against the first abutting portion 351 to drive the shift position control member 35 to move downward. Since the lower surface of the slot 341 is inclined, it can be easily removed from the slot 341, and the shift position controlling member 35 is also moved out.

When reaching the lower notch 341, the lower portion of the position control member 35 (including the first abutting portion 351) can only move closer to the inner notch 346 or along the surface of the inner notch 346 because the pressing action of the pressing piece 371 against the second extending portion 356 creates a tending force that urges the lower portion of the position control member 35 in the direction of the position forming member 34. Thus, the lower portion of the shift position controlling member 35 faces the bottom of the inner groove 346, and the upper portion thereof is always caught on the guide groove 345 by the third extending portion 357, so that the terrace portion 353 is inclined from the guide groove 345 to the bottom of the inner groove 346.

Since the support crossbar portion 331 is sandwiched between the platform portion 353 and the second extension portion 356, when the platform portion 353 assumes the above-described inclined state, the support crossbar portion 331 moves along the platform portion 353, is guided by the platform portion 353 into the lower notch 341, and reaches a state shown in S6.

When the user further pulls the lumbar plate 20, and the supporting beam portion 331 further moves downward relative to the shift control member 35, the supporting beam portion 331 abuts against the first abutting portion 351, so as to drive the shift control member 35 to continue to move downward and move out of the lower shift slot 341. Then, the supporting beam 331 reaches the position of the position-limiting portion 342, and drives the first abutting portion 351 to also reach the position-limiting portion 342. Since the depth of the inner groove 346 is shallow, the first contact portion 351 moves along the inner groove 346 and finally reaches the stopper portion 342. At this time, the surfaces of the first projection 359 and the second projection 372 abut against each other, and in this state, the pressing piece 371 and the second extension portion 356 are also pressed against each other, and the elastic deformation force of the pressing piece 371 and the second extension portion 356 causes the surfaces of the first projection 359 and the second projection 372 to closely contact each other and not to easily displace, so that the lower end portion of the shift position control member 35 is stabilized at the stopper portion 342, and reaches the state shown in S7. In addition, in this state, the first extension portion 355 abuts on the surface of the cover 37, so that the shift position control member 35 is more stable and less likely to be displaced in the state shown in S7.

In the state shown in S7, when the user pulls the lumbar plate 20 backward, the shift position control member 35 is not easily displaced in this state, and therefore the support crossbar portion 331 moves upward with respect to the shift position forming member 34 away from the first abutting portion 351 and moves upward along the flat portion 353. Since the length of the platform portion 353 is greater than the distance between the upper end of the uppermost slot 341 and the lower end of the lowermost slot 341, the platform portion 353 is aligned with all slots 341, which corresponds to the fact that the surface of the platform portion 353 is flush with the moving surfaces of the other portions between the slots 341, so that the supporting beam portion 331 moves on the surface of the platform portion 353, thereby moving upward beyond all slots 341 at once.

When the position reaches the second abutting portion 354, the supporting cross rod portion 331 abuts against the second abutting portion 354, so that the gear position control member 35 is driven to move upwards; at this time, since the power for supporting the cross bar portion 331 and the shift position controlling member 35 to move upward is provided by the user dialing the waist panel 20, the driving force of the movement can overcome the elastic deformation force of the pressing piece 371 and the second extending portion 356, so that the first projection 359 is disengaged from the second projection 372, and the shift position controlling member 35 further moves upward to reach the position-limiting protrusion 343, and becomes the state shown in S8.

In the state shown in S8, if the user pulls the waist plate 20 to move the supporting beam 331 downward relative to the shift position forming member 34, the supporting beam 331 abuts against the first abutting portion 351 to drive the shift position controlling member 35 to move downward; when the shift position control member 35 passes the point X, the lower portion thereof moves along the surface of the inner groove 346 due to the press-contact action of the pressing piece 371 and the second extension 356, so that the supporting beam portion 331 is guided into the upper shift groove 341, thereby returning to the state shown in S5.

Therefore, when the user uses the seat 100 of the present embodiment, if the angle between the seat 10 and the waist plate 20 (corresponding to the angle between the supporting plate 32 and the base plate 31) needs to be adjusted, the user only needs to tilt the upper body forward to let the waist temporarily leave the waist plate, and then moves the waist plate 20 with his/her hands to let the supporting crossbar 331 enter the corresponding stopping groove 341, and during the process, the user does not need to leave the seat 100, and does not need to bend or twist.

Compared with the first or second embodiment, the present embodiment does not use the form of the groove formed on the shift position control member 35 to guide the supporting cross rod portion 331, and the tending force of the shift position control member 35 toward the shift position forming member 34 is not formed by a magnetic force or a spring, but by the elastic deformation force of the pressing piece 371 and the second extending portion 356.

The structure of this embodiment is simpler than that of the second embodiment, and the magnet is not needed in the first embodiment, so the cost is lower than that of the first embodiment. However, since the platform portion 353 of the shift position control member 35 needs to have a certain length to cover all the shift position grooves 341, the length of the platform portion 353 is excessively long when the number of the shift position grooves 341 is large, and the inner groove portion 346 needs to be made deeper in order to ensure that the platform portion 353 is inclined at an angle suitable for guiding the support crossbar portion 331 into the shift position grooves 341. In this case, since the platform portion 353 is too long and the inner groove portion 346 is too deep, the movement and rotation of the shift position control member 35 are not smooth enough, and it is difficult to smoothly guide the support crossbar portion 331 into and out of the shift position groove 341. Therefore, under the prerequisite of guaranteeing smooth and easy use, the many gears of this embodiment support adjustment mechanism 30 should not make the more form of gear quantity, and generally 2 ~ 4 shelves can.

In addition, the platform 353 of the embodiment allows the supporting beam 331 to pass through all the notches 341 at one time, so that after the supporting beam 331 reaches the unlocking position, the supporting beam 331 can only move upward to a position above the uppermost notch 341 and continue moving upward, and thus the positioning control member can be driven upward to separate the first protrusion from the second protrusion. After the first and second protrusions are disengaged, the supporting beam 331 can enter each of the notches again. Therefore, the multi-gear support adjustment mechanism of the present embodiment cannot achieve intermediate adjustment, and is not as flexible in use as the first embodiment and the second embodiment.

The above embodiments are merely provided for illustrating specific embodiments of the present invention, and the multi-gear supporting and adjusting mechanism and the adjustable seat of the present invention are not limited to the scope of the above embodiments.

In the first and second embodiments, a groove is formed on the movable control member. However, the utility model discloses in, the recess quantity on this mobile control spare can also be a plurality ofly, as long as quantity is not more than the shelves groove, the equal effect that can reach same gear control. Under the condition that the number of the grooves on the movable control part is multiple, the whole length of the movable control part is longer than that of the embodiment, but as long as the length of the movable control part is smaller than the distance between the gear on the uppermost side and the limiting part, the supporting transverse rod part can drive the movable control part to move in a mode of abutting against the second abutting part or the first abutting part when moving upwards or downwards, and further gear adjustment or reset is realized.

In each embodiment, the gear forming members are all fixedly mounted on the supporting plate, but in the present invention, the gear forming members may also be integrally formed with the supporting plate.

In addition, the number of the gear slots of the first embodiment and the second embodiment is four, and the number of the gear slots of the third embodiment is two, but in the present invention, the gear slots may be other numbers, such as three, five or more, so as to provide more supporting gears for the user to select. In particular, in the first embodiment, since the shift position control member is mounted on the shift position forming member by means of magnetic force, and the supporting beam and the attractive force between the beam guide and the shift position forming member are also provided by the magnetic force, the number of the shift position grooves is not limited as in the third embodiment, and therefore, the shift position control member is very suitable for the case where the number of the shift positions is large.

In addition, in the embodiment, the support plate is formed integrally with the waist plate, and the base plate is formed integrally with the seat plate. In the present invention, the corresponding relationship can be reversed, that is, the supporting plate and the seat plate are integrally formed, and the base plate and the waist plate are integrally formed. In this form, the respective shift grooves and the stopper portions on the shift position forming member are not distributed in the up-down direction but distributed in the front-rear direction; accordingly, when the user pulls the lumbar plate, the support cross bar portion moves in the front-rear direction (instead of the up-down direction of the embodiment) on the moving surface of the shift position forming member into each support shift position. Such an adjustable seating furniture also has the same function of adjusting and restoring the supporting gears as the embodiment and has substantially the same effect, but because the seat plate needs to leave enough space for the supporting plate (especially, the gear forming member needs to have a certain length to ensure the distribution of a plurality of gear grooves), the length of the seat plate in the front-back direction is larger, the floor area is correspondingly larger, and the seat is not as adjustable as the seating furniture in the above embodiments in terms of portability.

In an embodiment, the adjustable seating apparatus has a waist panel and a seat panel on which a user sits directly when using the apparatus, and the waist portion rests on the waist panel. The utility model discloses in, in order to promote the comfort level of adjustable thing to sit on, also can increase a seat face of making by flexible material, this seat face can cover on seat and waist board continuously, and it does not influence the waist board and rotates, also can let user's health contact flexible material and feel comfortable.

In the embodiment, the lower surface of the seat plate is a plane, so that the adjustable seat in the embodiment can be used on other adjustable seats. However, the utility model discloses in, also can be at the surface mounting supporting leg under the seat, make the utility model discloses an adjustable thing to sit on can directly put and use subaerial. Moreover, the waist board of embodiment only corresponds and forms the support to the waist with user's waist, nevertheless the utility model discloses can also set up accessory parts such as neck pillow with the waist board extension on it, let adjustable thing to sit on can also form the support to other human body positions such as neck, further promote the comfort level of using. In this configuration, the weight of the lumbar plate is increased due to the larger size of the lumbar plate, and therefore, the components of the shift position control assembly are preferably made of stronger materials.

Claims (18)

1. A multi-gear support adjustment mechanism, comprising:

a substrate;

a support plate rotatably mounted on the base plate;

a support member rotatably mounted on the base plate and having a support beam portion for supporting the support plate so as to support the support plate at a different angle from the base plate;

a gear forming member fixed to the support plate and having a plurality of support gears formed thereon, the support gears being arranged in a predetermined direction and corresponding to different angles between the base plate and the support plate; and

a shift position control member that controls movement of the support cross-bar portion on the shift position forming member so that the support member supports the support plate at different support shift positions,

wherein the gear forming part is provided with a moving surface for bearing the movement of the supporting cross rod part, a plurality of gear grooves which respectively correspond to the supporting gears and can accommodate the supporting cross rod part and a limiting part corresponding to an unlocking gear for unlocking are formed on the moving surface,

the gear control piece is movably arranged on the gear forming piece along the preset direction and is provided with a first abutting part which can abut against the supporting cross rod part and is positioned at one end of the gear control piece close to the limiting part and a platform part which is far away from the limiting part and corresponds to the gear groove,

the supporting cross rod part abuts against the first abutting part to drive the gear control part to move when moving towards the limiting part along the preset direction, so that the platform part is at least flush with the moving surface at the position of the gear groove closest to the limiting part when the supporting cross rod part reaches the limiting part, and the supporting cross rod part moves on the surface of the platform part to cross the gear groove when returning from the limiting part.

2. The multi-range support adjustment mechanism of claim 1, wherein:

the end, far away from the limiting part, of the gear control part is further provided with a second abutting part capable of abutting against the supporting transverse rod part, so that the supporting transverse rod part abuts against the second abutting part when moving in the direction far away from the limiting part to drive the gear control part to move, the platform part is sequentially flush with the moving surfaces of the gear grooves, and the supporting transverse rod part sequentially passes through the platform part to sequentially cross the gear grooves.

3. The multi-range support adjustment mechanism of claim 2, wherein:

wherein the gear control piece is also provided with a groove positioned between the first abutting part and the platform part, the shape of the groove is matched with that of the gear groove,

when the supporting cross rod part moves along the preset direction and drives the gear control part to move by abutting against the first abutting part, the grooves are sequentially aligned with the gear grooves along with the movement of the gear control part, so that once the supporting cross rod part stops moving, the supporting cross rod part can enter the gear grooves along the surfaces of the first abutting part and the grooves, and then enters the corresponding supporting gears.

4. The multi-range support adjustment mechanism of claim 3, wherein:

wherein the number of the grooves is a plurality and is not more than the number of the baffle grooves,

the distance between the adjacent grooves is the same as the distance between the adjacent baffle grooves.

5. The multi-range support adjustment mechanism of claim 3, further comprising:

and a rail guide for providing a tending force to the support rail to move the support rail into the stopper groove, so that the support rail automatically enters the stopper groove by the tending force when the groove is aligned with the stopper groove and the support rail moves to the stopper groove.

6. The multi-range support adjustment mechanism of claim 5, wherein:

wherein the rail guide is a hook fixed to the support rail part,

the gear forming piece is provided with a first magnet piece which extends along the preset direction and is at least distributed at each gear groove position, the hook-shaped piece is fixed with a second magnet piece,

the first magnet member and the second magnet member are attracted to each other by a magnetic force, thereby generating the tending force.

7. The multi-range support adjustment mechanism of claim 6, wherein:

the gear control piece is fixed on the gear forming piece, and the gear control piece is fixed on the gear forming piece through a first magnetic piece.

8. The multi-range support adjustment mechanism of claim 7, wherein:

wherein the first magnet piece is a magnetic metal sheet,

the second magnet piece is a permanent magnet.

9. The multi-range support adjustment mechanism of claim 5, further comprising:

a cover member covering the shift position forming member.

10. The multi-range support adjustment mechanism of claim 9, wherein:

wherein the rail guide is a sheet member fixed to the cover member by a plurality of springs and contacting the support rail portion,

the springs are compression springs, and apply a force to the rail guide in a direction toward the support plate, thereby generating the tending force.

11. The multi-range support adjustment mechanism of claim 1, wherein:

wherein the gear forming member is provided with a groove part extending along the predetermined direction, the groove part is provided with a guide groove extending along the predetermined direction,

the gear control member is movably disposed on the gear forming member through the guide groove.

12. The multi-range support adjustment mechanism of claim 11, wherein:

the gear control piece is provided with a clamping block embedded in the guide groove, so that the gear control piece can be movably arranged on the gear forming piece along the vertical direction.

13. The multi-range support adjustment mechanism of claim 11, wherein:

wherein, the inner side of the guide groove is also provided with an inner groove part corresponding to the baffle groove, the depth of the part of the inner groove part corresponding to the baffle groove is lower than that of the baffle groove,

third extending parts which are lapped on the guide grooves are arranged on two sides of the platform part, and the distance between the end parts of the two third extending parts is larger than the width of the groove part, so that the gear control piece can slide on the guide grooves by means of the two third extending parts.

14. The multi-gear support adjustment mechanism of claim 13, wherein:

wherein, platform portion and the width of first butt portion is less than distance between the guide slot and be greater than simultaneously distance between the interior slot part makes support horizontal pole portion drives first butt portion reachs behind the shelves groove the gear control passes through two the axle that the extension formed takes place to rotate, lets platform portion and first butt portion gets into a shelves groove, and then the guide support horizontal pole portion gets into a shelves groove.

15. The multi-gear support adjustment mechanism of claim 13, wherein:

the length of the platform part is greater than the distance between the end parts of the baffle grooves on two sides in the preset direction, so that the supporting cross rod part reaches the limiting part, the platform part is flush with the moving surfaces of the baffle grooves, and the supporting cross rod part passes through the platform part to cross all the baffle grooves.

16. The multi-gear support adjustment mechanism of claim 13, further comprising:

a cover member covering the gear forming member,

wherein the first abutting portion is provided with a second extending portion extending toward the cover member,

the cover part is provided with a pressing sheet extending towards the gear control piece, the pressing sheet is pressed on the second extending part in a pressing mode, so that a tending force pushing a part, at least comprising the first abutting part, of the gear control piece to the gear forming piece direction is generated, the tending force pushes the first abutting part to the inner groove part to push when the gear control piece is driven by the supporting cross rod part to reach the gear groove, and then the platform part is inclined to guide the supporting cross rod part to enter the gear groove.

17. The multi-range support adjustment mechanism of claim 1, wherein:

the support part is also provided with two connecting rod parts respectively extending from two sides of the support cross rod part, and the ends of the two connecting rod parts far away from the support cross rod part are hinged on the base plate.

18. An adjustable seating furniture, comprising:

a seat plate corresponding to the buttocks of the user;

a waist plate corresponding to a waist of a user; and

the multi-range support adjustment mechanism of any one of claims 1 to 17,

wherein one of the base plate and the support plate is mounted on or integrally formed with the seat plate,

the other of the base plate and the support plate is mounted on or integrally formed with the waist panel.

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