CN114698966B

CN114698966B - Balance chair with locking device

Info

Publication number: CN114698966B
Application number: CN202210460722.XA
Authority: CN
Inventors: 叶龙华
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2025-10-10
Anticipated expiration: 2042-04-28
Also published as: CN114698966A; WO2023207473A1

Abstract

The invention discloses a balance chair with a locking device, which comprises a supporting part, a seat part, a kneeling part, a connecting mechanism and a locking device, wherein the balance chair is controlled to change between a seat state and a kneeling state through the swinging, the locking device comprises a sliding part and two locking mechanisms, a first locking mechanism is connected with the sliding part and the kneeling part to lock the kneeling part and the seat part which are positioned in the seat state or release the locking, a second locking mechanism comprises a locking seat, the sliding part is in linkage with the locking seat, the two locking positions respectively correspond to the sliding part, the locking seats of the first locking position and the second locking position are respectively locked and kept in the balance chair in the seat state and the kneeling chair state, and the locking seats which are movably positioned between the first locking position and the second locking position release the locking. The sliding piece has the advantages that the sliding piece is used for controlling the two locking joints to be synchronously locked or released, so that the use convenience is improved.

Description

Balance chair with locking device

Technical Field

The invention relates to the field of home furnishing, in particular to a balance chair with a locking device.

Background

The Chinese patent database announced a multifunctional balance chair on 11 th 2018, 05 th month, and its announcement number is CN207341490U. The chair comprises a supporting part, a seat part and a kneeling part, wherein the seat part can be rotatably connected with the supporting part, the kneeling part can be rotatably connected with the seat part, the supporting part and the kneeling part are connected through a connecting mechanism, the kneeling part can move between a seat position aligned with the seat part and a kneeling seat position forming a kneeling cushion of the balance chair, and the movement of the seat part is linked with the movement of the kneeling part, so that the balance chair can change between a seat state and a kneeling seat state. The support strength of the kneeling member is further enhanced when aligned with the seat position of the seat member, and thus there is a need for improvement.

Disclosure of Invention

The invention provides a balance chair with a locking device, which overcomes the defects of the balance chair in the prior art.

The technical scheme adopted for solving the technical problems is that the balance chair with the locking device comprises a supporting part, a seat part capable of swinging at least relative to the supporting part, a kneeling pad part capable of swinging at least relative to the seat part, a connecting mechanism for connecting the supporting part and the kneeling pad part, and the balance chair is controlled to change between a chair state and a kneeling chair state through the swinging, and the balance chair also comprises the locking device, wherein the locking device comprises:

a slider (3) slidable relative to the seat part between a first position and a second position;

A first locking mechanism for connecting the slider (3) and the kneeling member, the first locking mechanism in a first position locking the kneeling member and the seat member in a seat state, the first locking mechanism in a second position releasing the locking of the first locking mechanism, and

The second locking mechanism comprises a locking seat (5), the sliding piece (3) and the locking seat (5) are linked and drive the locking seat (5) to move between a first locking position and a second locking position through sliding of the sliding piece (3), the first locking position and the second locking position correspond to a first position and a second position respectively, the locking seat (5) of the first locking position and the second locking position is respectively locked and kept in a balance chair in a chair state and a kneeling chair state, and the locking seat (5) between the first locking position and the second locking position is moved to release the locking of the second locking mechanism.

In one embodiment, the first locking mechanism comprises a first locking groove fixed relative to the sliding piece (3) and a first locking pin (14) fixed relative to the kneeling part, the first locking groove comprises an opening and a locking cavity which are communicated, the first locking pin (14) is matched with the first locking groove, the first locking pin (14) enters and exits the first locking groove through the opening, and the first locking pin (14) positioned in the locking cavity realizes the locking of the first locking mechanism.

In one embodiment, the first locking mechanism comprises a locking hook (2A), the locking hook (2A) and the sliding piece (3) are relatively and fixedly arranged and provided with the first locking groove, and the opening and the locking cavity are matched to form an L-shaped structure.

In one embodiment, the slider (3) and the seat part are provided with a first elastomer (3C) therebetween, or/and the locking hook (2A) and the seat part are provided with a second elastomer (2C) therebetween.

In one embodiment, a guide surface is provided on one side of the opening of the locking hook (2A).

In one embodiment, the second locking mechanism further comprises a locking frame (6) fixed on the supporting component, the locking seat (5) can be connected to the seat component in a swinging mode, the locking seat (5) is provided with a first limiting pin and a second limiting pin, the sliding piece (3) slides to drive the locking seat (5) to swing between the first locking position and the second locking position, the first limiting pin of the first locking position is inserted into the locking frame (6) and limits the seat component to be kept at a first angle corresponding to a seat state, and the second limiting pin of the second locking position is inserted into the locking frame (6) and limits the seat component to be kept at a second angle corresponding to a kneeling seat state.

In one embodiment, the locking frame (6) is provided with a first groove (6B) and a second groove (6A), a first limiting pin of the locking seat (5) of the first locking position is inserted into the first groove (6B) of the locking frame (6), and a second limiting pin of the locking seat (5) of the second locking position is inserted into the second groove (6A) of the locking frame (6).

In one embodiment, the slider (3) is concavely provided with a notch (3B), the upper part of the locking seat (5) is matched with the notch (3B) to drive the locking seat (5) to swing through sliding of the slider (3), the middle part of the locking seat (5) is connected to the seat part through a first pivot, and the first limiting pin and the second limiting pin are respectively arranged on two sides of the first pivot.

In one embodiment, the bottom of the seat part is provided with a mounting groove (1B), the slider (3) can be connected in the mounting groove (1B) in a front-back sliding way, and the slider (3) is provided with a handle part (3A) for the operation of a user.

In one embodiment, the locking device further comprises:

the first inhaul cable mechanism comprises a first operating piece (1C) and a first inhaul cable, wherein the first operating piece (1C) is movably connected to the seat part, one end of the first inhaul cable is connected with the first operating piece (1C), and the other end of the first inhaul cable is connected with the sliding piece (3).

In one embodiment, the slider (3) is provided with a handle portion (3A) for user operation, the handle portion (3A) is provided at the front portion of the slider (3), and the first operation member (1C) is provided at the rear portion of the seat member.

In one embodiment, the chair also comprises a backrest part and a backrest connecting rod (13), wherein one end of the backrest connecting rod (13) is rotatably connected with the supporting part, the other end of the backrest connecting rod is rotatably connected with the backrest connecting rod (13), the chair seat part is rotatably connected with the backrest part, and the supporting part, the chair seat part, the backrest part and the backrest connecting rod (13) are matched to form a four-bar mechanism.

In one embodiment, the backrest part comprises a locking piece (7), a mounting seat (9), a backrest (11) fixedly arranged on the mounting seat (9) and a third locking mechanism arranged between the locking pieces (7) of the mounting seat (9), wherein the mounting seat (9) is rotationally connected with the locking piece (7), the third locking mechanism comprises a sliding pin (9A) which is slidingly connected with the mounting seat (9), the locking piece (7) is provided with a plurality of positioning holes (7B), the positioning holes (7B) are arranged at intervals of arcs with circle centers on the rotation axis of the mounting seat (9), and the rotation angle between the locking piece (7) and the mounting seat (9) is controlled by inserting the sliding pin (9A) into one positioning hole (7B).

In one embodiment, a third elastic body (7A) for resetting is arranged between the locking piece (7) and the mounting seat (9), and a fourth elastic body for resetting is arranged between the sliding pin (9A) and the mounting seat (9).

In one embodiment, the support part comprises a support rod (12), a chassis shell (8), a chassis (10) and an elastic mechanism, wherein the chassis (10) is fixedly arranged at the top of the support rod (12), the chassis shell (8) is sleeved outside the chassis (10) and the chassis shell (8) can be rotatably connected to the chassis (10), the elastic mechanism is matched with the chassis shell (8) and the chassis (10), and the seat part and the connecting mechanism are connected to the chassis shell (8).

In one embodiment, the chassis shell (8) is provided with a movable hole, the supporting rod (12) passes through the movable hole, and the chassis shell (8) can move relative to the supporting rod (12).

In one embodiment, the support rod (12) is an air rod, the support part further comprises a lifting regulator, the lifting regulator comprises an L-shaped regulating piece (17) and a driving mechanism, the common end part of the L-shaped regulating piece (17) is connected to the chassis (10) in a swinging way, and the driving mechanism is connected with one end of the L-shaped regulating piece, and the other end of the L-shaped regulating piece is matched with the air rod and controls the air rod to lift.

In one embodiment, the driving mechanism comprises a second cable mechanism, the second cable mechanism comprises a second operation piece (1D) and a second cable, the second operation piece (1D) is movably connected to the seat part, one end of the second cable is connected with the second operation piece (1D), and the other end of the second cable is connected with one end of the L-shaped adjusting piece.

In one embodiment, the connecting mechanism comprises a main link rod (16), one end of the main link rod (16) is rotatably connected with the kneeling part, the other end of the main link rod is rotatably connected with the supporting part, the front middle part of the seat part is convexly provided with two protruding parts, the front sides of the two kneeling parts are connected with the front sides of the protruding parts through second pivots and are respectively arranged at two sides of the protruding parts, and the first locking groove corresponds to the protruding parts.

Compared with the background technology, the technical proposal has the following advantages:

the locking device comprises a sliding piece, a first locking mechanism and a second locking mechanism, wherein the first locking mechanism can lock the kneeling pad component and the chair seat component which are positioned in a chair state through the first locking mechanism, and can lock the balance chair to be kept in the chair state or the kneeling chair state, so that double locking is realized, the safety of the balance chair is improved, and the second locking mechanism can control the two locking mechanisms to lock or release synchronously through sliding of the sliding piece, so that the use convenience is improved.

The first elastic body is arranged between the sliding piece and the seat part, or/and the second elastic body is arranged between the locking hook and the seat part, so that automatic locking is realized, and the use safety is improved.

The chassis is fixedly arranged at the top of the supporting rod, the chassis shell is sleeved outside the chassis and can be rotationally connected between the chassis shell and the chassis, the elastic mechanism is connected between the chassis shell and the chassis, the elastic mechanism can enable the chassis shell to elastically swing back and forth and drive the seat to elastically swing back and forth, the function of a leisure chair is achieved, and the supporting strength can be improved.

The supporting rod is an air rod, the lifting regulator comprises an L-shaped regulating part and a driving mechanism, the common end part of the regulating part is connected to the chassis in a swinging way, the driving mechanism is connected with one end of the regulating part, the other end of the driving mechanism is matched with the air rod and controls the air rod to lift, the lifting can be controlled through the swinging of the regulating part, the control is convenient, and the control is stable and reliable.

Drawings

The invention is further described below with reference to the drawings and examples.

Fig. 1 is a perspective view of a balance chair according to an embodiment in a chair state.

Figure 2 is a schematic perspective view of a balance chair according to an embodiment in a kneeling position.

Fig. 3 is a schematic perspective view of a back rest member of a balance chair according to an embodiment at a second angle.

Fig. 4 is an exploded perspective view of a balance chair according to an embodiment.

Fig. 5 is a bottom perspective view of a balance chair according to an embodiment in a chair position.

Figure 6 is a schematic bottom perspective view of a balance chair according to an embodiment in a kneeling position.

Fig. 7 is a bottom perspective view of a back rest component of a balance chair according to an embodiment at a second angle.

Fig. 8 is a schematic cross-sectional view of a balance chair according to an embodiment in a sitting position.

Figure 9 is a schematic cross-sectional view of a balance chair according to an embodiment in a kneeling position.

Fig. 10 is a partially exploded perspective view of a balance chair according to an embodiment.

FIG. 11 is a partially exploded perspective view of a second embodiment of a balance chair.

FIG. 12 is a partially exploded perspective view of a third embodiment of a balance chair.

FIG. 13 is a partially exploded perspective view of a balance chair according to an embodiment.

Fig. 14 is a schematic cross-sectional view of a first locking structure of a balance chair according to an embodiment.

Fig. 15 is an exploded perspective view of a first locking structure of a balance chair according to an embodiment.

Fig. 16 is a perspective view showing a latch device of a balance chair according to an embodiment in a chair state.

Figure 17 is a schematic perspective view of the lock of the balance chair of the embodiment in a position between a chair position and a kneeling position.

Figure 18 is a schematic perspective view of the lock mechanism of a balance chair in a kneeling position.

Fig. 19 is a schematic perspective view showing a lock device of a balance chair according to an embodiment in a chair state.

Figure 20 is a schematic perspective cross-sectional view of the locking device of a balance chair of an embodiment in a kneeling position.

Fig. 21 is an exploded perspective view of a backrest member and a mating member of a balance chair according to an embodiment.

Fig. 22 is a left side view schematic of a back rest component of a balance chair according to an embodiment at a first angle.

Fig. 23 is a left side view schematic of a back rest component of a balance chair according to an embodiment at a second angle.

Fig. 24 is a perspective view of a back rest member of a balance chair according to an embodiment.

Fig. 25 is a schematic cross-sectional view of a support member of a balance chair according to an embodiment.

Fig. 26 is an exploded perspective view of a support member of a balance chair according to an embodiment.

Figure 27 is a schematic perspective view of an embodiment balance chair in a kneeling position.

Figure 28 is a schematic perspective view of the three-way balance chair of the embodiment in a kneeling position.

Detailed Description

Example 1

Referring to fig. 1 to 26, the balance chair with locking device comprises a support part, a seat part 1 capable of swinging relative to the support part, a kneeling part 15 capable of swinging relative to the seat part 1, a connecting mechanism for connecting the support part and the kneeling part 15, a locking device, a backrest part and a backrest connecting rod 13, wherein the seat part 1 swings and the kneeling part 15 swings to form a linkage, the seat part 1 swings to drive the kneeling part 15 to swing, so that the balance chair is controlled to change between a chair state and a kneeling chair state by the swinging, the kneeling part 15 in the chair state is in a chair position aligned relative to the seat part 1, and the kneeling part 15 in the kneeling chair state is in a kneeling chair position forming a balance chair kneeling cushion. If desired, the balance chair may be an unburnt chair without the back rest member and the back rest link.

The locking device comprises a sliding piece 3, a first locking mechanism and a second locking mechanism, wherein the sliding piece 3 can slide between a first position and a second position relative to the seat part 1, the first locking mechanism is connected with the sliding piece 3 and the kneeling part, the first locking mechanism in the first position is locked with the kneeling part 1 and the seat part 15 in a seat state, the first locking mechanism in the second position releases the locking of the first locking mechanism, the second locking mechanism comprises a locking seat 5, the sliding piece 3 and the locking seat 5 are in linkage, the sliding piece 3 slides to drive the locking seat 5 to move between the first locking position and the second locking position, the first locking position and the second locking position respectively correspond to the first position and the second position, the locking seat 5 in the first locking position and the second locking position are respectively locked with the balance seat in the seat state and the kneeling seat state, and the second locking mechanism between the first locking position and the second locking position is released. The locking device can lock the kneeling pad component 1 and the chair seat component 15 in the chair state through the first locking structure, can lock the balance chair to be kept in the chair state or the kneeling chair state, realizes double locking, and improves the safety of the balance chair, and secondly, the sliding of the sliding piece 3 controls the synchronous locking or releasing of the two locking, thereby improving the use convenience.

The bottom of the seat part 1 is provided with a mounting groove 1B, and the sliding piece 3 can be connected in the mounting groove 1B in a front-back sliding way, so that the structure can be improved in compactness. The seat part 1 comprises a seat plate and a support frame 4 fixedly connected under the seat plate, wherein the support frame 4 is provided with a first convex arm 4A, a second convex arm 4B and a third convex arm 4C which are downwards protruded and are arranged at intervals in the front-back direction, and the first convex arm 4A can be rotatably connected with the support part so that the seat part 1 can be connected with the support part in a swinging way. The slider 3 is at least partially slidably connected between the seat plate and the support frame 4. The slider 3 is provided with a handle portion 3A for user operation to facilitate manual driving of the slider 3 to slide back and forth, and the handle portion is formed as a protrusion to form a step between the protrusion and the slider to facilitate manual pulling. A first elastic body 3C is provided between the slider 3 and the seat member 1, and the slider 3 is driven to return to the first position by the ability of the elastic body to return automatically after compression, such as a compression spring.

The first locking mechanism comprises a first locking groove fixed relative to the sliding piece 3 and a first locking pin 14 fixed relative to the kneeling part, the first locking groove comprises an opening and a locking cavity which are communicated and are arranged downwards, the first locking pin 14 and the first locking groove are matched, the first locking pin 14 enters and exits the first locking groove through the opening, the first locking pin 14 positioned in the locking cavity realizes the locking of the first locking mechanism, the locking of the first locking pin 14 is released when the first locking pin 14 is positioned in the opening and is separated from the opening, and the locking effect is particularly good for the locking of the 'kneeling part 15 aligned with the seat part 1'. The first locking mechanism comprises a locking hook 2A, the locking hook 2A and the sliding piece 3 are relatively and fixedly arranged and provided with the first locking groove, the opening and the locking cavity are matched to form an L-shaped structure, a guide surface such as an inclined surface is arranged on one side of the opening of the locking hook 2A, when the kneeling chair state is changed to the chair state, the guide surface of the locking hook 2A is matched with the first lock pin 14, the locking hook 2A can be pushed to move to a second position to enter the opening, and after the locking hook enters, the locking hook 2A is driven to return to the first position through the first elastic body 3C or the second elastic body 2C so as to enter the locking cavity, so that locking is realized, automatic locking is realized, and the use convenience is improved. Further, the first locking mechanism comprises a first locking member 2, the first locking member 2 comprises a fixed plate and two locking hooks 2A fixedly connected to two sides of the fixed plate, the first locking member 2 is fixedly connected to the sliding member 3, the two locking hooks 2A are respectively arranged on two sides of the sliding member 3 to be matched with two kneeling cushion parts 15, the sliding member 3 is provided with a matching groove, a second elastic body 2C is arranged in the matching groove, and the second elastic body is propped against and connected between the locking hooks 2A and the seat part 1 to drive the sliding member 3 to reset to a first position, and a notch of the matching groove is preferably covered by the fixing plate 2B.

The second locking mechanism further comprises a locking frame 6 fixed on the supporting part, the locking frame 6 is provided with a first groove 6B and a second groove 6A, the locking seat 5 can be connected to the seat part 1 in a swinging mode, for example, the middle of the locking seat 5 is connected to a second convex arm 4B of a supporting frame 4 of the seat part 1 through a first pivot, the locking seat 5 is provided with a first limiting pin 51 and a second limiting pin 52 which are respectively arranged on the upper side and the lower side of the first pivot, the sliding part 3 slides to drive the locking seat 5 to swing between the first locking position and the second locking position, the first limiting pin of the first locking position is inserted into the first groove 6B of the locking frame 6 and limits the seat part to be kept at a first angle corresponding to a seat state, and the second limiting pin of the second locking position is inserted into the second groove 6A of the locking frame 6 and limits the seat part to be kept at a second angle corresponding to a kneeling state. The locking frame 6 is provided with two locking walls which are arranged at intervals left and right, the rear side of the locking wall is provided with the second groove 6A and the first groove 6B which are vertically spaced, the locking seat 5 is arranged in the interval of the two locking walls, the first limiting pin and the second limiting pin protrude out of two sides of the locking seat 5 and are respectively matched with the first groove 6B and the second groove 6A which are arranged on the two locking walls, when the locking seat moves between the first locking position and the second locking position, the two limiting pins are separated from the grooves so as to be capable of changing between two states, 2, the bottom surface of the rear part of the sliding piece 3 is concavely provided with a notch 3B, the upper part of the locking seat 5 is matched with the notch 3B so as to drive the locking seat 5 to swing through the sliding of the sliding piece 3, specifically, for example, the notch is arc-shaped, the upper part of the locking seat is spherical, the arc-shaped and spherical-shaped is matched so as to realize the matching of other structures, for example, the shifting fork structure and the groove are matched with the groove, for example, and the groove is clamped. The second locking mechanism is characterized in that the two limiting pins are matched with the two grooves respectively to lock the two states respectively, the locking is firm, stable and reliable, the locking is realized at two positions through swinging of the locking seat, the switching is convenient, the mechanism is stable and reliable, and the linkage is realized through matching of the notch and the top, and the linkage is stable and reliable.

The locking device further comprises a first inhaul cable mechanism, the first inhaul cable mechanism comprises a first operating piece 1C and a first inhaul cable which are movably connected to the seat part, one end of the first inhaul cable is connected with the first operating piece 1C, the other end of the first inhaul cable is connected with the sliding piece 3, the first operating piece can move to slide through the sliding piece pulled by the first inhaul cable, the first operating piece is in a button structure or a swing button structure, firstly, the whole part layout is facilitated through the inhaul cable structure, the first operating piece is conveniently arranged at a proper position, secondly, the sliding piece can be pulled by hand to slide, and the sliding piece can be driven to slide through the inhaul cable mechanism, so that the use convenience is improved. The handle portion 3A is provided at the front of the slider 3, and the first operating member 1C is provided at the rear of the seat portion member, thereby facilitating the operation of the user.

One end of the backrest connecting rod 13 is rotationally connected to the supporting part, the other end is rotationally connected to the backrest part, the seat part 1 is rotationally connected to the backrest part, the supporting part, the seat part 1, the backrest part and the backrest connecting rod 13 are matched to form a four-bar mechanism, and the backrest angle is not changed due to the change of the balance chair between two states through the four-bar mechanism, so that the convenience of use is improved. The backrest part comprises a second locking piece 7, a mounting seat 9 and a third locking mechanism fixedly arranged between the backrests 11 of the mounting seat 9, wherein the mounting seat 9 is rotationally connected to the second locking piece 7, so that the mounting seat 9 can rotate relative to the second locking piece 7 to realize backrest angle adjustment, the third locking mechanism comprises a sliding pin 9A which is slidingly connected to the mounting seat 9, the locking piece 7 is provided with a plurality of positioning holes 7B, the positioning holes 7B are arranged at intervals in an arc line with the circle center on the rotation axis of the mounting seat 9, and the sliding pin 9A is inserted into a certain positioning hole 7B to control the rotation angle between the locking piece 7 and the mounting seat 9, so that backrest angle adjustment is realized. In a specific structure, a third elastic body 7A for resetting, such as a torsion spring, is arranged between the locking piece 7 and the mounting seat 9, and a fourth elastic body for resetting, such as a compression spring, is arranged between the sliding pin 9A and the mounting seat 9, so that convenience of locking and releasing is improved, and safety performance is improved. Further, the pivotal connection of the seat member 1 and the back member 13, the pivotal connection of the back link 13 and the back member 13, and more particularly, the third arm 4C of the seat member 1 and the second locking member 7 are pivotally connected by a third pivot connection, and the back link 13 and the second locking member 7 are pivotally connected by a fourth pivot connection.

The supporting part comprises a supporting rod 12, a chassis shell 8, a chassis 10 and an elastic mechanism, wherein the chassis 10 is fixedly arranged at the top of the supporting rod 12, the chassis shell 8 is sleeved outside the chassis 10, the chassis shell 8 can be rotatably connected to the chassis 10, and the elastic mechanism is matched with the chassis shell 8 and the chassis 10, so that the chassis shell 8 can swing back and forth relative to the chassis 10 through the elastic mechanism to realize the function of a leisure chair. In the specific structure, the chassis shell 8 is provided with a movable hole, the supporting rod 12 passes through the movable hole, and the chassis shell 8 can move relative to the supporting rod 12, wherein the movement is that the chassis shell 8 can swing within a preset angle relative to the chassis. The supporting rod 12 is an air rod, the supporting part also comprises a lifting regulator, the lifting regulator comprises an L-shaped regulating piece 17 and a driving mechanism, the common end part of the regulating piece 17 is connected with the chassis 10 in a swinging way, the driving mechanism is connected with one end of the L-shaped regulating piece 17, the other end of the driving mechanism is matched with the air rod and controls the air rod to lift, and the control is like controlling the lifting switch of the air rod; the driving mechanism comprises a second cable mechanism, wherein the second cable mechanism comprises a second operation piece 1D and a second cable, the second operation piece 1D is movably connected to the rear part of a seat part, one end of the second cable is connected with the second operation piece 1D, the other end of the second cable is connected with one end of an L-shaped adjusting piece, the second operation piece is in a button structure or a swing button structure, the whole part layout is convenient by adopting a cable structure, the second operation piece is conveniently arranged at a proper position, a guide seat 171 is fixedly arranged in the chassis 10, the second cable passes through a guide hole of the guide seat to be connected with one end of the L-shaped adjusting piece 17, the driving stability is improved, 4, the elastic mechanism can limit the maximum opening angle of the chassis shell 8 and the chassis 10 and can realize elastic adjustment at an opening angle, and concretely comprises a fifth elastic body 19, a bolt 20 and a nut 19, the bolt passes through the chassis shell 8 from bottom to top and the nut on the chassis 10 in a screwed manner, the fifth elastic body 19 is arranged between the chassis 10 and the nut, the fifth elastic body is in a compressed spring, the fifth elastic body is matched with the fifth elastic body and the chassis shell and the fifth elastic body can realize elastic adjustment of the chassis 20 and the chassis 20. Further, the first arm 4A of the seat part 1 is pivotally connected to the chassis housing 8 by a fifth pivot, the backrest link 13 is pivotally connected to the chassis housing 8, and the latch bracket 6 is fixedly secured within the chassis housing 8.

The connection mechanism includes a main link 16, one end of the main link 16 being pivotally connected to a downwardly projecting fourth arm of the kneeling member and the other end being pivotally connected to the chassis housing 8 of the support member. The seat part 1 has two protruding parts protruding from the front middle part, two kneeling parts 15 are respectively disposed on two sides of the protruding parts, a second pivot 21 is disposed to pass through the two kneeling parts 15 and a pivot hole 1A disposed on the front side of the protruding parts, and the first locking groove corresponds to the protruding parts, and the first locking pin protrudes from the side wall of the kneeling part 15.

Example two

Referring to fig. 27, it differs from the embodiment in that it further includes a handrail 22 fixedly attached to the backrest member by a support tube.

Example III

Referring to fig. 28, it is different from the second embodiment in that it further includes a leg portion 23 on which the support bar is fixed.

The foregoing description is only illustrative of the preferred embodiments of the present invention, and therefore should not be taken as limiting the scope of the invention, for all changes and modifications that come within the meaning and range of equivalency of the claims and specification are therefore intended to be embraced therein.

Claims

1. The balance chair with the locking device comprises a supporting part, a seat part capable of swinging at least relative to the supporting part, a kneeling part capable of swinging at least relative to the seat part and a connecting mechanism for connecting the supporting part and the kneeling part, wherein the seat part swings and the kneeling part swing to form linkage, the seat part swings to drive the kneeling part to swing, and the balance chair is controlled to change between a chair state and a kneeling chair state through the swinging, and the balance chair is characterized by further comprising the locking device which comprises:

A first locking mechanism for connecting the slider (3) and the kneeling part, wherein the first locking mechanism of the slider (3) at a first position locks the kneeling part and the seat part in a chair state, the first locking mechanism of the slider (3) at a second position releases the locking of the first locking mechanism, the first locking mechanism comprises a first locking groove fixed relative to the slider (3) and a first locking pin (14) fixed relative to the kneeling part, the locking and releasing are realized through the cooperation of the first locking groove and the first locking pin (14), and

The second locking mechanism comprises a locking seat (5), the sliding piece (3) is linked with the locking seat (5) and drives the locking seat (5) to move between a first locking position and a second locking position through the sliding of the sliding piece (3), the first locking position and the second locking position correspond to the first position and the second position respectively, the locking seat (5) of the first locking position and the second locking position is respectively locked with a balance chair which is kept in a chair state and a kneeling chair state, and the locking seat (5) between the first locking position and the second locking position is moved to release the locking of the second locking mechanism;

The first locking mechanism and the second locking mechanism are controlled to be synchronously locked or released through sliding of the sliding piece (3).

2. The balanced chair with locking device according to claim 1, wherein the first locking groove comprises an opening and a locking cavity which are communicated, the first lock pin (14) is matched with the first locking groove, the first lock pin (14) enters and exits the first locking groove through the opening, and the first lock pin (14) positioned in the locking cavity realizes the locking of the first locking mechanism.

3. The balance chair with locking device according to claim 2, wherein the first locking mechanism comprises a locking hook (2A), the locking hook (2A) and the sliding piece (3) are relatively fixedly arranged and provided with the first locking groove, and the opening and the locking cavity are matched to form an L-shaped structure.

4. A balance chair with locking device according to claim 3, characterized in that the first elastic body (3C) is arranged between the sliding piece (3) and the seat part, or/and the second elastic body (2C) is arranged between the locking hook (2A) and the seat part.

5. A balance chair with a locking device according to claim 3, wherein a guide surface is provided on one side of the opening of the locking hook (2A).

6. The balance chair with the locking device according to claim 1, wherein the second locking mechanism further comprises a locking frame (6) fixed on the supporting component, the locking seat (5) can be connected to the chair seat component in a swinging mode, the locking seat (5) is provided with a first limiting pin and a second limiting pin, the sliding piece (3) is used for driving the locking seat (5) to swing between the first locking position and the second locking position, the first limiting pin of the first locking position is inserted into the locking frame (6) and limits the chair seat component to be kept at a first angle corresponding to the chair state, the second limiting pin of the second locking position is inserted into the locking frame (6) and limits the chair seat component to be kept at a second angle corresponding to the kneeling chair state.

7. The balance chair with the locking device according to claim 6, wherein the locking frame (6) is provided with a first groove (6B) and a second groove (6A), a first limiting pin of the locking seat (5) of the first locking position is inserted into the first groove (6B) of the locking frame (6), and a second limiting pin of the locking seat (5) of the second locking position is inserted into the second groove (6A) of the locking frame (6).

8. The balance chair with locking device according to claim 6, wherein the sliding piece (3) is concavely provided with a notch (3B), the upper part of the locking seat (5) and the notch (3B) are matched to drive the locking seat (5) to swing through sliding of the sliding piece (3), the middle part of the locking seat (5) is connected to the chair seat part through a first pivot, and the first limiting pin and the second limiting pin are respectively arranged at two sides of the first pivot.

9. The balance chair with locking device according to claim 1, wherein the bottom of the seat part is provided with a mounting groove (1B), the slider (3) can be connected in the mounting groove (1B) in a front-back sliding way, and the slider (3) is provided with a handle part (3A) for the operation of a user.

10. The balanced chair with lock device according to claim 1, wherein the lock device further comprises:

11. The balance chair with lock device according to claim 10, wherein the slider (3) is provided with a handle portion (3A) for user operation, the handle portion (3A) is provided at the front portion of the slider (3), and the first operation member (1C) is provided at the rear portion of the seat member.

12. The balanced chair with lock according to claim 1, further comprising a back rest member and a back rest link (13), wherein the back rest link (13) is rotatably connected to the support member at one end and rotatably connected to the back rest link (13) at the other end, wherein the seat member and the back rest member are rotatably connected, and wherein the support member, the seat member, the back rest member and the back rest link (13) cooperate to form a four-bar linkage.

13. The balance chair with locking device according to claim 12, wherein the backrest part comprises a locking member (7), a mounting seat (9), a backrest (11) fixedly arranged on the mounting seat (9) and a third locking mechanism arranged between the locking member (7) and the mounting seat (9), the mounting seat (9) is rotatably connected with the locking member (7), the third locking mechanism comprises a sliding pin (9A) sliding on the mounting seat (9), the locking member (7) is provided with a plurality of positioning holes (7B), the plurality of positioning holes (7B) are arranged at intervals of arcs with the circle centers on the rotation axis of the mounting seat (9), and the rotation angle between the locking member (7) and the mounting seat (9) is controlled by inserting the sliding pin (9A) into one of the positioning holes (7B).

14. The balance chair with locking device according to claim 13, wherein a third elastic body (7A) for resetting is arranged between the locking piece (7) and the mounting seat (9), and a fourth elastic body for resetting is arranged between the sliding pin (9A) and the mounting seat (9).

15. The balance chair with locking device according to claim 1, wherein the supporting component comprises a supporting rod (12), a chassis shell (8), a chassis (10) and an elastic mechanism, the chassis (10) is fixedly arranged on the top of the supporting rod (12), the chassis shell (8) is sleeved outside the chassis (10) and the chassis shell (8) can be rotatably connected to the chassis (10), the elastic mechanism is matched with the chassis shell (8) and the chassis (10), and the chair seat component and the connecting mechanism are connected to the chassis shell (8).

16. The balance chair with locking device according to claim 15, wherein the chassis housing (8) is provided with a movable hole, the support rod (12) passes through the movable hole, and the chassis housing (8) can move relative to the support rod (12).

17. The balance chair with locking device according to claim 15, wherein the supporting rod (12) is an air rod, the supporting component further comprises a lifting regulator, the lifting regulator comprises an L-shaped regulating piece (17) and a driving mechanism, the L-shaped regulating piece (17) is connected to the chassis (10) in a swinging way at the common end part, and the driving mechanism is connected with one end of the L-shaped regulating piece, and the other end of the L-shaped regulating piece is matched with the air rod and controls the air rod to lift.

18. The balance chair with locking device according to claim 17, wherein the driving mechanism comprises a second stay rope mechanism, the second stay rope mechanism comprises a second operation piece (1D) and a second stay rope, the second operation piece (1D) is movably connected to the seat part, one end of the second stay rope is connected with the second operation piece (1D), and the other end of the second stay rope is connected with one end of the L-shaped adjusting piece.

19. The balance chair with locking device according to claim 2, wherein the connecting mechanism comprises a main link rod (16), one end of the main link rod (16) is rotatably connected with the kneeling pad component, the other end of the main link rod is rotatably connected with the supporting component, the front middle part of the seat part is convexly provided with two protruding parts, the front sides of the two kneeling pad components are connected with the front sides of the protruding parts through second pivots and are respectively arranged at two sides of the protruding parts, and the first locking groove corresponds to the protruding parts.