Balance chair with locking device

Abstract

The application discloses a balanced chair with a locking device, which comprises a supporting part, a seat part, a kneel pad part, a connecting mechanism and a locking device. The balanced chair changes between a sitting state and a kneeling state through swing control. The locking device comprises a sliding part and two locking mechanisms. The first locking mechanism connects the sliding part and the kneel pad part to lock or release the locking between the kneel pad part and the seat part in the sitting state. The second locking mechanism comprises a locking seat. The sliding part and the locking seat are linked. Two locking positions correspond to two positions of the sliding part. The locking seat in the first locking position and the second locking position respectively locks the balanced chair in the sitting state and the kneeling state. The locking seat moving between the first locking position and the second locking position releases the locking. The application has the following advantages: the two locking mechanisms are locked or released synchronously through the sliding control of the sliding part, and the use convenience is improved.

Description

Technical Field

[0001] The present invention relates to the field of home furnishings, and in particular to a balancing chair with a locking device. Background Art

[0002] The Chinese Patent Database published a multifunctional balance chair on May 11, 2018, with publication number CN207341490U. The chair comprises a support member, a seat member, and a kneeling pad member. The seat member is rotatably connected to the support member, and the kneeling pad member is rotatably connected to the seat member. The support and kneeling pad members are connected by a connecting mechanism. The kneeling pad member is movable between a sitting position aligned with the seat member and a kneeling position forming a kneeling pad for the balance chair. The movement of the seat member and the kneeling pad member are linked, enabling the balance chair to transition between a sitting position and a kneeling position. The support strength of the kneeling pad member when aligned with the seat member in the sitting position needs to be further enhanced, thus requiring improvement. Summary of the Invention

[0003] The present invention provides a balancing chair with a locking device, which overcomes the shortcomings of balancing chairs in the background art.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a balancing chair with a locking device, comprising a support member, a seat member capable of swinging at least relative to the support member, a kneeling pad member capable of swinging at least relative to the seat member, and a connecting mechanism connecting the support member and the kneeling pad member, wherein the balancing chair is controlled to change between a sitting position and a kneeling position by the above-mentioned swinging; and further comprising a locking device, wherein the locking device comprises:

[0005] A slide member (3) capable of sliding relative to the seat member between a first position and a second position;

[0006] A first locking mechanism connects the slide (3) and the kneeling pad component, wherein the first locking mechanism in a first position locks the kneeling pad component and the seat component in a sitting state, and the first locking mechanism in a second position releases the locking of the first locking mechanism; and

[0007] The second locking mechanism comprises a locking seat (5), the slide (3) and the locking seat (5) are linked and the sliding member (3) drives the locking seat (5) to move between a first locking position and a second locking position, the first locking position and the second locking position respectively corresponding to a first position and a second position, the locking seat (5) in the first locking position and the second locking position respectively locks the balance chair in a sitting position and a kneeling position, and the locking seat (5) moving between the first locking position and the second locking position releases the above-mentioned locking of the second locking mechanism.

[0008] In one embodiment: the first locking mechanism includes a first locking groove fixed relative to the slide (3) and a first locking pin (14) fixed relative to the kneeling pad component, the first locking groove includes an opening and a locking cavity that are connected to each other, the first locking pin (14) and the first locking groove cooperate and the first locking pin (14) enters and exits the first locking groove through the opening, and the first locking pin (14) located in the locking cavity realizes the above-mentioned locking of the first locking mechanism.

[0009] In one embodiment, the first locking mechanism includes a locking hook (2A), the locking hook (2A) and the sliding member (3) are fixed relative to each other and are provided with the above-mentioned first locking groove, and the opening and the locking cavity cooperate to form an L-shaped structure.

[0010] In one embodiment, a first elastic body (3C) is provided between the sliding member (3) and the seat component, or / and a second elastic body (2C) is provided between the locking hook (2A) and the seat component.

[0011] In one embodiment, a guide surface is provided on one side of the opening of the locking hook (2A).

[0012] In one embodiment: the second locking mechanism also includes a locking frame (6) fixed to the supporting component; the locking seat (5) can be swung and connected to the chair seat component, and the locking seat (5) is provided with a first limit pin and a second limit pin, and the sliding member (3) slides to drive the locking seat (5) to swing between the first locking position and the second locking position, the first limit pin of the first locking position is inserted into the locking frame (6) and limits the chair component to remain at a first angle corresponding to the sitting state, and the second limit pin of the second locking position is inserted into the locking frame (6) and limits the chair component to remain at a second angle corresponding to the kneeling chair state.

[0013] In one embodiment, the locking frame (6) is provided with a first groove (6B) and a second groove (6A); the first limiting pin of the locking seat (5) at the first locking position is inserted into the first groove (6B) of the locking frame (6); and the second limiting pin of the locking seat (5) at the second locking position is inserted into the second groove (6A) of the locking frame (6).

[0014] In one embodiment, the slide (3) is recessed with a notch (3B), and the upper portion of the locking seat (5) cooperates with the notch (3B) so as to be able to drive the locking seat (5) to swing by sliding the slide (3); the middle portion of the locking seat (5) is rotatably connected to the seat component via a first pivot, and the first limit pin and the second limit pin are respectively arranged on both sides of the first pivot.

[0015] In one embodiment, a mounting groove (1B) is provided at the bottom of the seat component, the slide (3) can be slidably connected in the mounting groove (1B) forward and backward, and the slide (3) is provided with a handle portion (3A) for user operation.

[0016] In one embodiment, the locking device further comprises:

[0017] The first cable mechanism comprises a first operating member (1C) movably connected to the seat component and a first cable, wherein one end of the first cable is connected to the first operating member (1C) and the other end is connected to the sliding member (3).

[0018] In one embodiment, the slide (3) is provided with a handle portion (3A) for user operation, the handle portion (3A) is provided at the front of the slide (3), and the first operating member (1C) is provided at the rear of the seat component.

[0019] In one embodiment, the invention further comprises a backrest component and a backrest connecting rod (13), one end of the backrest connecting rod (13) is rotatably connected to the support component, and the other end is rotatably connected to the backrest connecting rod (13), the seat component and the backrest component are rotatably connected, and the support component, the seat component, the backrest component and the backrest connecting rod (13) cooperate to form a four-bar linkage mechanism.

[0020] In one embodiment, the backrest component includes a locking member (7), a mounting seat (9), a backrest (11) fixed to the mounting seat (9), and a third locking mechanism between the locking member (7) attached to the mounting seat (9); the mounting seat (9) is rotatably connected to the locking member (7); the third locking mechanism includes a sliding pin (9A) slidably connected to 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 along an arc with a center located 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 a certain positioning hole (7B).

[0021] In one embodiment, a third elastic body (7A) for resetting is provided between the locking member (7) and the mounting seat (9); and a fourth elastic body for resetting is provided between the sliding pin (9A) and the mounting seat (9).

[0022] In one embodiment, the supporting component comprises a supporting rod (12), a chassis shell (8), a chassis (10) and an elastic mechanism; the chassis (10) is fixedly mounted on the top of the supporting rod (12); the chassis shell (8) is sleeved on the outside of the chassis (10) and the chassis shell (8) can be rotatably connected to the chassis (10); the elastic mechanism cooperates with the chassis shell (8) and the chassis (10); the seat component and the connecting mechanism are both connected to the chassis shell (8).

[0023] In one embodiment, the chassis shell (8) is provided with a movable hole, the support rod (12) passes through the movable hole, and the chassis shell (8) can move relative to the support rod (12).

[0024] In one embodiment, the support rod (12) is a gas rod, and the support component further includes a lifting regulator, which includes an L-shaped regulating member (17) and a driving mechanism. The L-shaped regulating member (17) is swingably connected to the chassis (10) at its common end. The driving mechanism is connected to one end of the L-shaped regulating member and the other end cooperates with the gas rod to control the lifting of the gas rod.

[0025] In one embodiment, the driving mechanism includes a second cable mechanism, which includes a second operating member (1D) and a second cable. The second operating member (1D) is movably connected to the seat component. One end of the second cable is connected to the second operating member (1D), and the other end is connected to one end of the L-shaped adjustment member.

[0026] In one embodiment, the connection mechanism includes a main connecting rod (16), one end of the main connecting rod (16) is rotatably connected to the kneeling pad component, and the other end is rotatably connected to the support component; a protruding portion is convexly provided on the front middle portion of the seat component, and two kneeling pad components are provided, and the front sides of the two kneeling pad components are connected to the front side of the protruding portion through a second pivot and are respectively arranged on both sides of the protruding portion; the first locking groove corresponds to the protruding portion.

[0027] Compared with the background technology, this technical solution has the following advantages:

[0028] The locking device includes a slide, a first locking mechanism and a second locking mechanism. Firstly, it can not only lock the kneeling pad component and the seat component in the sitting state through the first locking structure, but also lock the balance chair to maintain it in the sitting state or the kneeling state, thereby realizing double locking and improving the safety of the balance chair; secondly, the two locks can be controlled to be locked or released synchronously by sliding the slide, thereby improving the convenience of use.

[0029] A first elastic body is provided between the sliding member and the seat component, or / and a second elastic body is provided between the locking hook and the seat component, so as to realize automatic locking and improve the safety of use.

[0030] The chassis is fixed on the top of the support rod, the chassis shell is sleeved on the outside of the chassis and can be rotatably connected to the chassis, and the elastic mechanism is connected between the chassis shell and the chassis. Through the elastic mechanism, not only can the chassis shell be elastically swung back and forth, driving the seat to swing elastically back and forth to realize the function of a rocking chair, but also the support strength can be improved.

[0031] The support rod is a gas rod, and the lifting adjuster includes an L-shaped adjusting part and a driving mechanism. The common end of the adjusting part is swingably connected to the chassis. The driving mechanism is connected to one end of the adjusting part, and the other end cooperates with the gas rod and controls the lifting of the gas rod. The lifting can be controlled by the swinging of the adjusting part, which is convenient for control and stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings and examples.

[0033] Figure 1 It is a three-dimensional schematic diagram of the balancing chair of Example 1 in the sitting state.

[0034] Figure 2 It is a three-dimensional schematic diagram of the balancing chair of Example 1 in a kneeling position.

[0035] Figure 3 It is a three-dimensional schematic diagram of the backrest component of the balance chair of Example 1 at a second angle.

[0036] Figure 4 It is a three-dimensional exploded schematic diagram of the balance chair of Example 1.

[0037] Figure 5 It is a bottom-up stereoscopic schematic diagram of the balancing chair of Example 1 in a sitting position.

[0038] Figure 6 This is a bottom-up stereoscopic schematic diagram of the balancing chair of Example 1 in a kneeling position.

[0039] Figure 7 It is a bottom-up stereoscopic schematic diagram of the backrest component of the balance chair of Example 1 at a second angle.

[0040] Figure 8 2 is a cross-sectional schematic diagram of the balancing chair of Example 1 in a sitting position.

[0041] Figure 9 1 is a cross-sectional schematic diagram of the balancing chair of Example 1 in a kneeling position.

[0042] Figure 10 This is one of the partial exploded schematic views of the balance chair in Example 1.

[0043] Figure 11 This is the second partial exploded schematic diagram of the balance chair in the first embodiment.

[0044] Figure 12 This is the third partial exploded schematic diagram of the balance chair of the first embodiment.

[0045] Figure 13 This is the fourth partial exploded schematic diagram of the balance chair of Example 1.

[0046] Figure 14 It is a cross-sectional schematic diagram of the first locking structure of the balance chair in Example 1.

[0047] Figure 15 It is a three-dimensional exploded schematic diagram of the first locking structure of the balance chair in Example 1.

[0048] Figure 16 It is a three-dimensional schematic diagram of the locking device of the balancing chair of Example 1 in the sitting state.

[0049] Figure 17It is a three-dimensional schematic diagram of the locking device of the balancing chair in the first embodiment between the sitting position and the kneeling position.

[0050] Figure 18 It is a three-dimensional schematic diagram of the locking device of the balance chair of Example 1 in the kneeling chair state.

[0051] Figure 19 It is a three-dimensional cross-sectional schematic diagram of the locking device of the balance chair of Example 1 in the sitting state.

[0052] Figure 20 It is a three-dimensional cross-sectional schematic diagram of the locking device of the balance chair of Example 1 in the kneeling chair state.

[0053] Figure 21 It is a three-dimensional exploded schematic diagram of the backrest component and matching components of the balance chair in Example 1.

[0054] Figure 22 1 is a left side schematic diagram of the backrest component of the balance chair of Example 1 at a first angle.

[0055] Figure 23 1 is a left side schematic diagram of the backrest component of the balance chair of Example 1 at a second angle.

[0056] Figure 24 3D is a schematic three-dimensional diagram of the backrest component of the balance chair according to the first embodiment.

[0057] Figure 25 2 is a schematic cross-sectional view of the support component of the balance chair according to the first embodiment.

[0058] Figure 26 3D is an exploded schematic diagram of the support components of the balance chair according to the first embodiment.

[0059] Figure 27 It is a three-dimensional schematic diagram of the balancing chair of Example 2 in a kneeling position.

[0060] Figure 28 It is a three-dimensional schematic diagram of the balance chair of Example 3 in the kneeling position. DETAILED DESCRIPTION

[0061] Example 1

[0062] Please refer to Figures 1 to 26A balancing chair with a locking device includes a support component, a seat component 1 that can swing relative to the support component, a kneeling pad component 15 that can swing relative to the seat component 1, a connecting mechanism connecting the support component and the kneeling pad component 15, a locking device, a backrest component, and a backrest connecting rod 13. The swinging of the seat component 1 and the kneeling pad component 15 form a linkage, and the swinging of the seat component 1 drives the kneeling pad component 15 to swing, thereby controlling the balancing chair to change between a sitting state and a kneeling state through the above swinging. When in the sitting state, the kneeling pad component 15 is in a sitting position aligned with the seat component 1. When in the kneeling state, the kneeling pad component 15 is in a kneeling position, forming a kneeling pad of the balancing chair. If needed, the backrest component and backrest connecting rod can be omitted, and the balancing chair is a chair without a backrest.

[0063] The locking device includes a slide 3, a first locking mechanism and a second locking mechanism; the slide 3 can slide between a first position and a second position relative to the seat part 1; the first locking mechanism connects the slide 3 and the kneeling pad part, the first locking mechanism in the first position locks the kneeling pad part 1 and the seat part 15 in the sitting state, and the first locking mechanism in the second position releases the above-mentioned locking of the first locking mechanism; the second locking mechanism includes a locking seat 5, the slide 3 and the locking seat 5 are linked and the locking seat 5 is driven to move between the first locking position and the second locking position by the sliding of the slide 3, the first locking position and the second locking position respectively correspond to the first position and the second position, the locking seats 5 in the first locking position and the second locking position respectively lock the balancing chair maintained in the sitting state and the kneeling state, and the locking seat 5 moving between the first locking position and the second locking position releases the above-mentioned locking of the second locking mechanism. This locking device, firstly, can not only lock the kneeling pad part 1 and the seat part 15 in the sitting state through the first locking structure, but also can lock the balance chair to maintain it in the sitting state or the kneeling state, thereby realizing double locking and improving the safety of the balance chair; secondly, the sliding part 3 slides to control the synchronous locking or release of the two locks, thereby improving the convenience of use.

[0064] The seat component 1 has a mounting slot 1B at its bottom, within which the slider 3 is slidably connected. This structure improves its compactness. The seat component 1 includes a seat plate and a support frame 4 fixed to the seat plate. The support frame 4 includes a first, second, and third protruding arms 4A, 4B, 4C, and protruding arms 4 extending downward and spaced apart from each other. The first protruding arm 4A is rotatably connected to the support component, allowing the seat component 1 to swingably connect to the support component. The slider 3 is at least partially slidably connected between the seat plate and the support frame 4. The slider 3 has a handle 3A for user operation, allowing the user to manually slide the slider 3 forward and backward. If the handle is raised, a step is formed between the handle and the slider to facilitate manual pulling. A first elastic member 3C is positioned between the slider 3 and the seat component 1. The elastic member, such as a compression spring, automatically returns to its first position after compression.

[0065] The first locking mechanism comprises a first locking slot fixed relative to the slide 3 and a first locking pin 14 fixed relative to the kneepad component, the first locking slot comprises a downwardly arranged opening and a locking cavity in communication, the first locking pin 14 and the first locking slot are matched and the first locking pin 14 enters and exits the first locking slot through the opening, the first locking pin 14 located in the locking cavity realizes the above-mentioned locking of the first locking mechanism, the first locking pin 14 is locked and released when it is located in the opening and separated from the opening, and the locking effect is particularly good for the locking of the alignment of the kneepad component 15 and the seat component 1. In the specific structure: 1, the first locking mechanism comprises a locking hook 2A, the locking hook 2A is fixed relative to the slide 3 and is provided with the above-mentioned first locking slot; 2, the opening and the locking cavity are matched to form an L-shaped structure, and one side of the opening of the locking hook 2A is provided with a guide surface, such as an inclined surface, so that when the kneeling chair state changes to the sitting chair state, the guide surface of the locking hook 2A cooperates with the first locking pin 14 to push the locking hook 2A to move to the second position to enter the opening, and after entering, the locking hook 2A is driven to reset to the first position by the first elastic body 3C or the second elastic body 2C to enter the locking cavity, realizing the locking and automatic locking, and improving the use convenience. Further, the first locking mechanism comprises a first locking piece 2, the first locking piece 2 comprises a fixed plate and two locking hooks 2A fixed on both sides of the fixed plate, the first locking piece 2 is fixed on the slide 3 and the two locking hooks 2A are arranged on both sides of the slide 3 to cooperate with the two kneepad components 15; the slide 3 is provided with a matching groove, the second elastic body 2C is arranged in the matching groove, the second elastic body is connected between the locking hook 2A and the seat component 1 to drive the slide 3 to reset to the first position, and a pressing piece 2B is preferably arranged to fix the groove of the matching groove.

[0066] The second locking mechanism further comprises a locking frame 6 fixed to the support member, the locking frame 6 being provided with a first recess 6B and a second recess 6A; the locking seat 5 is swingably connected to the seat member 1, for example, the middle part of the locking seat 5 is pivotally connected to the second protruding arm 4B of the support frame 4 of the seat member 1 through a first pivot, the locking seat 5 is provided with a first limiting pin 51 and a second limiting pin 52, the first limiting pin and the second limiting pin are respectively arranged on the upper side and the lower side of the first pivot; the locking seat 5 is swung between the first locking position and the second locking position through the sliding of the sliding member 3, the first limiting pin of the first locking position is inserted into the first recess 6B of the locking frame 6 and limits the seat member to keep at a first angle corresponding to the sitting state, and the second limiting pin of the second locking position is inserted into the second recess 6A of the locking frame 6 and limits the seat member to keep at a second angle corresponding to the kneeling state. In the specific structure: 1, the locking frame 6 has two locking walls, the two locking walls are arranged at intervals left and right, the rear side of the locking wall is provided with the second recess 6A and the first recess 6B which are arranged at intervals up and down, the locking seat 5 is located in the interval between the two locking walls, the first limiting pin and the second limiting pin protrude from the two sides of the locking seat 5 and are matched with the first recess 6B and the second recess 6A provided on the two locking walls respectively, when the locking seat is moved between the first locking position and the second locking position, the two limiting pins are both out of the recesses, so that the two states can be changed; 2, the rear bottom surface of the sliding member 3 is concavely provided with a notch 3B, the upper part of the locking seat 5 is matched with the notch 3B to enable the locking seat 5 to be swung through the sliding of the sliding member 3, for example, the notch is arc-shaped, the upper part of the locking seat is spherical, and the arc-shaped and spherical structures are matched to realize linkage, and other structures such as a shift fork structure can also be used according to needs; 3, the matching between the limiting pin and the recess is like clamping, and the recess is like a clamping groove. The above-mentioned second locking mechanism has the following advantages: 1, the two limiting pins are respectively matched with the two recesses to respectively lock the two states, so that the locking is firm, stable and reliable; 2, the two positions are locked through the swinging of the locking seat, so that the switching is convenient, and the mechanism is stable and reliable; 3, the linkage is realized through the matching of the notch and the top, and the linkage is stable and reliable.

[0067] The locking device further comprises a first cable mechanism, which comprises a first operating member 1C movably connected to the seat member and a first cable, one end of the first cable being connected to the first operating member 1C and the other end being connected to the sliding member 3, so that the first operating member can move the sliding member to slide through the first cable, the first operating member being, for example, a button structure or a swing knob structure, which has the following advantages: 1, the cable structure is adopted to facilitate the layout of the whole part, and the first operating member can be conveniently arranged at a suitable position; 2, the sliding member can be slid not only by hand but also by the cable mechanism, which has double operation modes and improves the convenience of use. The handle part 3A is arranged on the front part of the sliding member 3, and the first operating member 1C is arranged on the rear part of the seat member, so that the user can conveniently operate.

[0068] The backrest connecting rod 13 is rotatably connected at one end to the supporting part and at the other end to the backrest part, the seat part 1 and the backrest part are rotatably connected, the supporting part, the seat part 1, the backrest part and the backrest connecting rod 13 cooperate to form a four-bar linkage mechanism, so that the backrest angle is not changed by the balance chair changing between the two states, improving the convenience of use. The backrest part includes a second locking member 7, a mounting seat 9 and a third locking mechanism fixed between the backrest 11 and the mounting seat 9. The mounting seat 9 is rotatably connected to the second locking member 7, so that the mounting seat 9 can rotate relative to the second locking member 7 to adjust the backrest angle. The third locking mechanism includes a sliding pin 9A slidingly connected to the mounting seat 9. The locking member 7 has a plurality of positioning holes 7B arranged in an arc with the center on the rotation axis of the mounting seat 9. The sliding pin 9A is inserted into a certain positioning hole 7B to control the rotation angle between the locking member 7 and the mounting seat 9, thereby adjusting the backrest angle. In the specific structure: a third elastic body 7A, such as a torsion spring, is arranged between the locking member 7 and the mounting seat 9 for resetting; a fourth elastic body, such as a compression spring, is arranged between the sliding pin 9A and the mounting seat 9 for resetting, to improve the convenience of locking and releasing and improve the safety performance. Further, the seat part 1 and the backrest part 13 are rotatably connected, and the backrest connecting rod 13 and the backrest part 13 are rotatably connected, specifically, the third protruding arm 4C of the seat part 1 and the second locking member 7 are connected by a third pivot, and the backrest connecting rod 13 and the second locking member 7 are connected by a fourth pivot.

[0069] The support component includes a support rod 12, a chassis shell 8, a chassis 10, and an elastic mechanism. The chassis 10 is fixed to the top of the support rod 12. The chassis shell 8 is sleeved on the outside of the chassis 10 and can be rotatably connected to the chassis 10. The elastic mechanism cooperates with the chassis shell 8 and the chassis 10 to enable the chassis shell 8 to swing back and forth relative to the chassis 10 to realize the function of a reclining chair. In the specific structure, the chassis shell 8 is provided with a movable hole, the support rod 12 passes through the movable hole, and the chassis shell 8 can move relative to the support rod 12. The movement is that the chassis shell 8 can swing within a predetermined angle relative to the chassis. In the specific structure: 1. The support rod 12 is a gas rod, and the support component also includes a lifting regulator, which includes an L-shaped regulating member 17 and a driving mechanism. The regulating member 17 is swingably connected to the chassis 10 at its common end. The driving mechanism is connected to one end of the L-shaped regulating member 17, and the other end cooperates with the gas rod and controls the lifting of the gas rod, such as controlling the lifting switch of the gas rod; 2. The driving mechanism includes a second cable mechanism, which includes a second operating member 1D and a second cable. The second operating member 1D is movably connected to the rear part of the seat component, one end of the second cable is connected to the second operating member 1D, and the other end is connected to one end of the L-shaped regulating member. The second operating member is such as a button structure or a swing button structure. The cable structure is used to facilitate the layout of the entire components and to facilitate the second The operating member is positioned appropriately. 3. A guide seat 171 is also fixed within the chassis 10. The second cable passes through the guide hole of the guide seat and connects to one end of the L-shaped adjustment member 17, enhancing driving stability. 4. The elastic mechanism limits the maximum opening angle of the chassis shell 8 and chassis 10 and allows for elastic adjustment within the allowable opening angle. It specifically comprises a fifth elastic member 19, a bolt 20, and a nut 19. The bolt passes through the chassis shell 8 and chassis 10 from bottom to top and is threadedly engaged with a nut located on the chassis 10. The fifth elastic member 19 is positioned between the chassis 10 and the nut. The fifth elastic member, such as a compression spring, not only enables the fifth elastic member to cooperate with the chassis shell and chassis, but also allows the preload force of the fifth elastic member, thereby adjusting the chassis tension, to be adjusted via the nut 19 and bolt 20. Furthermore, the first protruding arm 4A of the seat component 1 is rotatably connected to the chassis shell 8 via a fifth pivot. The backrest link 13 is rotatably connected to the chassis shell 8. The locking frame 6 is fixedly mounted within the chassis shell 8.

[0070] The connecting mechanism includes a main connecting rod 16, one end of which is pivotally connected to a fourth cantilever protruding from the bottom of the kneeling pad, and the other end of which is pivotally connected to the chassis shell 8 of the support member. A protruding portion is provided on the front center portion of the seat member 1. Two kneeling pads 15 are provided, one on each side of the protruding portion. A second pivot shaft 21 extends through the two kneeling pads 15 and a pivot hole 1A located in front of the protruding portion. The first locking slot corresponds to the protruding portion, and a first locking pin protrudes from the side wall of the kneeling pad 15.

[0071] Example 2

[0072] Please refer toFigure 27 , which is different from the first embodiment in that it further includes an armrest 22, which is fixed to the backrest component through a support tube.

[0073] Example 3

[0074] Please refer to Figure 28 The difference between it and the second embodiment is that it further includes a leg portion 23, and the support rod is fixed on the leg portion.

[0075] The above description is merely a preferred embodiment of the present invention and therefore cannot be used to limit the scope of the present invention. In other words, equivalent changes and modifications made according to the scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A balancing chair with a locking device, comprising a support member, a seat member capable of swinging at least relative to the support member, a kneeling pad capable of swinging at least relative to the seat member, and a connecting mechanism connecting the support member and the kneeling pad member, wherein the swinging of the seat member and the kneeling pad member constitutes a linkage, the swinging of the seat member drives the swinging of the kneeling pad member, and the swinging of the seat member controls the balance chair to change between a sitting position and a kneeling position; characterized in that: Also included is a locking device, the locking device comprising: A slide (3) capable of sliding relative to the seat component between a first position and a second position; a first locking mechanism connecting the slide (3) and the kneeling pad component; when the slide (3) is in the first position, the first locking mechanism locks the kneeling pad component and the chair seat component in the sitting state; when the slide (3) is in the second position, the first locking mechanism releases the locking of the first locking mechanism; the first locking mechanism includes a first locking groove fixed relative to the slide (3) and a first locking pin (14) fixed relative to the kneeling pad component; the locking and releasing are achieved by the cooperation of the first locking groove and the first locking pin (14); and The second locking mechanism includes a locking seat (5), the slide (3) and the locking seat (5) are linked and the sliding member (3) drives the locking seat (5) to move between a first locking position and a second locking position, the first locking position and the second locking position respectively corresponding to a first position and a second position, the locking seats (5) at the first locking position and the second locking position respectively lock the balance chair in a sitting position and a kneeling position, and the locking seat (5) moving between the first locking position and the second locking position releases the above-mentioned locking of the second locking mechanism; The first locking mechanism and the second locking mechanism are controlled to be locked or released synchronously by sliding the slider (3).

2. The balancing chair with a locking device according to claim 1, characterized in that: The first locking slot comprises an opening and a locking cavity that are connected to each other. The first locking pin (14) cooperates with the first locking slot and the first locking pin (14) enters and exits the first locking slot through the opening. The first locking pin (14) located in the locking cavity realizes the above-mentioned locking of the first locking mechanism.

3. The balancing chair with a locking device according to claim 2, characterized in that: The first locking mechanism comprises a locking hook (2A), the locking hook (2A) and the sliding member (3) are fixed relative to each other and are provided with the above-mentioned first locking groove, and the opening and the locking cavity cooperate to form an L-shaped structure.

4. The balancing chair with a locking device according to claim 3, characterized in that: A first elastic body (3C) is provided between the sliding member (3) and the seat component, or / and a second elastic body (2C) is provided between the locking hook (2A) and the seat component.

5. The balancing chair with a locking device according to claim 3, characterized in that: A guide surface is provided on one side of the opening of the locking hook (2A).

6. The balancing chair with a locking device according to claim 1, characterized in that: The second locking mechanism also includes a locking frame (6) fixed to the supporting component; the locking seat (5) can be swung and connected to the seat component, and the locking seat (5) is provided with a first limiting pin and a second limiting pin. The sliding member (3) slides and drives 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 remain at a first angle corresponding to the sitting state. The second limiting pin of the second locking position is inserted into the locking frame (6) and limits the seat component to remain at a second angle corresponding to the kneeling state.

7. The balancing chair with a locking device according to claim 6, characterized in that: The locking frame (6) is provided with a first groove (6B) and a second groove (6A); the first limiting pin of the locking seat (5) at the first locking position is inserted into the first groove (6B) of the locking frame (6); and the second limiting pin of the locking seat (5) at the second locking position is inserted into the second groove (6A) of the locking frame (6).

8. The balancing chair with a locking device according to claim 6, characterized in that: The slide (3) is recessed with a notch (3B), and the upper portion of the locking seat (5) cooperates with the notch (3B) to enable the sliding of the slide (3) and drive the locking seat (5) to swing; the middle portion of the locking seat (5) is rotatably connected to the seat component via a first pivot, and the first limiting pin and the second limiting pin are respectively arranged on both sides of the first pivot.

9. The balancing chair with a locking device according to claim 1, characterized in that: The bottom of the seat component is provided with a mounting groove (1B), the slide (3) can be slidably connected in the mounting groove (1B) forward and backward, and the slide (3) is provided with a handle portion (3A) for user operation.

10. The balancing chair with a locking device according to claim 1, characterized in that: The locking device also includes: The first cable mechanism comprises a first operating member (1C) movably connected to the seat component and a first cable, wherein one end of the first cable is connected to the first operating member (1C) and the other end is connected to the sliding member (3).

11. The balancing chair with a locking device according to claim 10, characterized in that: The slide (3) is provided with a handle portion (3A) for user operation, the handle portion (3A) is provided at the front of the slide (3), and the first operating member (1C) is provided at the rear of the seat component.

12. The balancing chair with a locking device according to claim 1, characterized in that: It also includes a backrest component and a backrest connecting rod (13), one end of the backrest connecting rod (13) is rotatably connected to the support component, and the other end is rotatably connected to the backrest connecting rod (13), the seat component and the backrest component are rotatably connected, and the support component, the seat component, the backrest component and the backrest connecting rod (13) cooperate to form a four-bar linkage.

13. The balancing chair with a locking device according to claim 12, characterized in that: The backrest component comprises a locking member (7), a mounting seat (9), a backrest (11) fixed to the mounting seat (9), and a third locking mechanism between the locking member (7) attached to the mounting seat (9); the mounting seat (9) is rotatably connected to the locking member (7); the third locking mechanism comprises a sliding pin (9A) slidably connected to 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 along an arc whose center is located 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 a certain positioning hole (7B).

14. The balancing chair with a locking device according to claim 13, characterized in that: A third elastic body (7A) for resetting is provided between the locking member (7) and the mounting seat (9); and a fourth elastic body for resetting is provided between the sliding pin (9A) and the mounting seat (9).

15. The balancing chair with a locking device according to claim 1, characterized in that: The supporting component comprises a supporting rod (12), a chassis shell (8), a chassis (10) and an elastic mechanism, wherein the chassis (10) is fixedly mounted on the top of the supporting rod (12), the chassis shell (8) is sleeved on the outside of the chassis (10) and the chassis shell (8) is rotatably connected to the chassis (10), and the elastic mechanism cooperates with the chassis shell (8) and the chassis (10); the seat component and the connecting mechanism are both connected to the chassis shell (8).

16. The balancing chair with a locking device according to claim 15, characterized in that: The chassis shell (8) is provided with a movable hole, the support rod (12) passes through the movable hole, and the chassis shell (8) can move relative to the support rod (12).

17. The balancing chair with a locking device according to claim 15, characterized in that: The support rod (12) is a gas rod. The support component further includes a lifting regulator, which includes an L-shaped regulating member (17) and a driving mechanism. The L-shaped regulating member (17) is swingably connected to the chassis (10) at its common end. The driving mechanism is connected to one end of the L-shaped regulating member and the other end cooperates with the gas rod and controls the lifting of the gas rod.

18. The balancing chair with a locking device according to claim 17, characterized in that: The driving mechanism comprises a second cable mechanism, which comprises a second operating member (1D) and a second cable. The second operating member (1D) is movably connected to the seat component. One end of the second cable is connected to the second operating member (1D), and the other end is connected to one end of the L-shaped adjusting member.

19. The balancing chair with a locking device according to claim 2, characterized in that: The connecting mechanism comprises a main connecting rod (16), one end of which is rotatably connected to the kneeling pad component, and the other end of which is rotatably connected to the supporting component; a protruding portion is convexly provided on the front middle portion of the seat component, two kneeling pad components are provided, the front sides of the two kneeling pad components are connected to the front side of the protruding portion through a second pivot and are respectively arranged on both sides of the protruding portion; the first locking groove corresponds to the protruding portion.

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