A swing dining chair

Abstract

The present invention discloses a swing dining chair, comprising a support frame, a swing arm and a seat body, wherein the seat body comprises a seat and a backrest, a multi-stage angle adjustment device is arranged between the seat and the backrest, the swing arm is provided with a lifting seat, and the seat is rotatably connected with the lifting seat; a first locking device is arranged between the seat and the lifting seat, the first locking device is used to lock the seat, the seat is provided with a second locking device, the second locking device is used to lock the first locking device; the seat is provided with a first unlocking mechanism for unlocking the second locking device; a third locking device is also arranged between the seat and the lifting seat, the third locking device is used to lock the multi-stage angle adjustment device; a fourth locking device is arranged between the swing arm and the support frame, the fourth locking device is used to lock the swing arm; the lifting seat is provided with a second unlocking mechanism for unlocking the fourth locking device. The present invention has a simple and reasonable structure, is easy to operate, is safe and reliable, and is conducive to preventing the possibility of misoperation.

Description

Technical Field

[0001] The invention relates to the technical field of children's dining chairs, in particular to a swing dining chair. Background Art

[0002] At present, children's swings and children's dining chairs have become necessities for children's growth. In order to save costs, the existing swing dining chair has realized the switch between the swing and the dining chair, that is, when the user wants to use it as a swing for children's entertainment, it can be switched to a swing, and when the user wants to use it as a dining chair for children's dining, it can be switched to a dining chair. The angle between the seat and the backrest of the swing dining chair can generally be adjusted, and the range of angle adjustment is generally 95° to 180°. However, when used as a swing, if the angle between the seat and the backrest is too large, the child is easily thrown out of the swing, and safety cannot be ensured. Since the swing dining chair needs to perform multiple operations when it is converted from a dining chair to a swing, and the existing swing dining chair generally lacks a safe and reliable locking structure, it is easy to cause safety hazards due to misoperation during use. Although there are some swing dining chairs on the market that are equipped with corresponding locking structures, the structural setting is also relatively complicated, not only the production cost is high, but also the operation is very inconvenient. Summary of the invention

[0003] The purpose of the present invention is to provide a swing dining chair in view of the defects and shortcomings of the prior art, which has a simple and reasonable structure, is easy to operate, safe and reliable, and is conducive to preventing the possibility of misoperation.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions.

[0005] A swing dining chair, comprising a support frame, a swing arm and a seat body, wherein the swing arm is rotatably connected to the support frame, and a driver for driving the swing arm to swing is arranged on the support frame, and the seat body comprises a seat and a backrest, wherein the seat is rotatably connected to the backrest, and a multi-speed angle adjustment device is arranged between the seat and the backrest, and the multi-speed angle adjustment device is used to adjust the position of the backrest relative to the seat so that the two can stay at a plurality of angle positions, wherein the angle positions comprise a swing angle position and a non-swing angle position, and the swing arm is provided with a lifting seat, and the lifting seat is slidably matched with the swing arm, and the seat is rotatably connected to the lifting seat, and the seat has at least a first angle position and a second angle position relative to the lifting seat;

[0006] A first locking device is provided between the seat and the lifting seat, the first locking device is used to lock the seat so that it is relatively fixed with the lifting seat, the seat is provided with a second locking device, and the second locking device is used to lock the first locking device; the seat is provided with a first unlocking mechanism for unlocking the second locking device; when the backrest is adjusted from the non-swing angle gear to the swing angle gear relative to the seat, the first unlocking mechanism unlocks the second locking device; a third locking device is also provided between the seat and the lifting seat, the third locking device cooperates with the lifting seat, and when the seat is relative to the lifting seat by the first locking device When the first angle position is adjusted to the second angle position, the lifting seat drives the third locking device to lock the multi-speed angle adjustment device to the swing angle gear; a fourth locking device is arranged between the swing arm and the support frame, and the fourth locking device is used to lock the swing arm so that it is relatively fixed to the support frame, and the fourth locking device is located on the sliding track of the lifting seat; the lifting seat is provided with a second unlocking mechanism for unlocking the fourth locking device, and the second unlocking mechanism is linked with the seat part, and when the seat part is adjusted from the first angle position to the second angle position relative to the lifting seat, the seat part drives the second unlocking mechanism to operate.

[0007] Further, the first locking device includes a locking plate arranged on the lifting seat, a pull plate arranged on the seat and corresponding to the locking plate, the pull plate slidingly cooperates with the seat, the locking plate is provided with a locking groove, the pull plate is provided with a locking pin, and the seat is provided with a pull plate spring that abuts against the pull plate, and the pull plate spring abuts against the pull plate so that the locking pin is inserted into the locking groove.

[0008] Furthermore, the second locking device includes a pin hole arranged on the pull plate, a conversion latch arranged on the seat and corresponding to the pull plate, the conversion latch is slidably matched with the seat, the conversion latch is linked with the first unlocking mechanism, the seat is provided with a latch spring that abuts against the conversion latch, the latch spring abuts against the conversion latch, so that the conversion latch is inserted into the pin hole.

[0009] Further, the first unlocking mechanism includes a sliding link movably arranged in the seat portion, the sliding link is linked with the backrest, the conversion pin is provided with a socket for inserting the end of the sliding link, the hole wall of the socket is provided with a latch bevel, and the end of the sliding link is provided with a connecting rod bevel that cooperates with the latch bevel; when the backrest is adjusted from the non-swing angle position to the swing angle position relative to the seat portion, the sliding link moves toward the conversion pin, the connecting rod bevel and the latch bevel are abutted against each other, so that the conversion pin is disengaged from the pin hole.

[0010] Furthermore, the sliding link is provided with a linkage column, and the backrest is provided with a linkage baffle; when the backrest is adjusted from the non-swing angle position to the swing angle position relative to the seat, the linkage baffle and the linkage column are linked to each other.

[0011] Further, the third locking device includes a locking button movably arranged on the seat, and an inclined step arranged on the lifting seat and cooperating with the locking button. When the seat is converted from the first angular position to the second angular position relative to the lifting seat, the inclined step pushes the locking button to move, so that the locking button locks the multi-speed angle adjustment device. The locking button is configured with a button spring, and the button spring is used to make the locking button have a movement tendency to unlock the multi-speed angle adjustment device.

[0012] Furthermore, the multi-speed angle adjustment device includes a gear block arranged on the seat portion, the gear block is provided with an arc groove adapted to the rotation trajectory of the backrest, a positioning block is movably provided on the backrest, the backrest is provided with a cable that cooperates with the positioning block, the positioning block is provided with a positioning pin that slides with the arc groove, the groove wall of the arc groove is provided with a plurality of gear grooves for the positioning pin to be inserted into, and the plurality of gear grooves are arranged at intervals; a positioning block spring is provided between the positioning block and the backrest, and the positioning block spring is used to ensure that the positioning pin always has a movement tendency to be inserted into the gear groove.

[0013] Furthermore, the arc-shaped groove is provided with a through hole, which is located between the gear slot corresponding to the swing angle gear and the gear slot corresponding to the non-swing angle gear adjacent to the swing angle gear, and the end of the locking button away from the inclined step is movably inserted in the through hole.

[0014] Furthermore, the fourth locking device includes a lock shell, a lock seat, a lock tongue and a trigger button, the lock shell is arranged on the swing arm, the lock seat is arranged on the support frame, the lock tongue is arranged in the lock shell along a transverse movement, the lock seat is provided with a lock hole for the lock tongue to be inserted into, a first return spring is arranged in the lock shell, the first return spring is used to make the lock tongue have a movement tendency to be inserted into the lock hole, the trigger button is arranged in the lock shell along a longitudinal movement, the upper end of the trigger button is linked to the second unlocking mechanism, and the lower end of the trigger button is linked to the lock tongue; when the trigger button is subjected to a pressing force, the trigger button drives the lock tongue to overcome the elastic force of the first return spring and move laterally, so that the fourth locking device is unlocked.

[0015] Furthermore, the second unlocking mechanism includes an unlocking button movably arranged in the lifting seat and linked with the trigger button, and an arc portion arranged in the seat portion and linked with the unlocking button, the center of the arc portion is eccentrically arranged relative to the rotation fulcrum of the seat body and the lifting seat, and a second return spring is arranged in the lifting seat to abut against the unlocking button, and the second return spring is used to ensure that the unlocking button always has a movement tendency away from the trigger button.

[0016] The beneficial effects of the present invention are as follows: the swing dining chair provided by the present invention optimizes and improves the existing technology, has a simple and reasonable structural setting, is easy to operate, and the multi-level linkage interlocking structure adopted is linked together during operation, which can effectively prevent the possibility of misoperation. It is safe and reliable when used, and eliminates safety hazards.

[0017] Specifically, the present invention arranges a lifting seat on the swing arm so that the seat is rotatably connected to the lifting seat, and arranges a first locking device between the seat and the lifting seat, and uses the first locking device to lock the seat, so that the seat cannot rotate relative to the lifting seat when the first locking device is in a locked state. At the same time, a second locking device cooperating with the first locking device and a sliding connecting rod cooperating with the second locking device are respectively arranged on the seat. When the backrest is in a non-swing angle gear relative to the seat, the second locking device locks the first locking device, and the first locking device also locks the seat. At this time, the seat cannot be rotated relative to the lifting seat, that is, the swing dining chair cannot be adjusted from the dining chair state to the swing state; and when the backrest is adjusted from the non-swing angle gear relative to the seat to the swing angle gear, the backrest will drive the sliding connecting rod to move, and the sliding connecting rod drives the second locking device to unlock the first locking device. At this time, the first locking device is in an active state, and the user can adjust the swing dining chair from the dining chair state to the swing state as needed; since the third locking device is arranged between the seat and the lifting seat, when the backrest is in the swing angle position relative to the seat (that is, the first locking device is unlocked), and the seat is adjusted from the first angle position to the second angle position relative to the lifting seat, the third locking device is triggered by the lifting seat to operate, and the third locking device further locks the multi-speed angle adjustment device. Therefore, when the swing dining chair is in the swing state, the angle of the backrest cannot be adjusted, so that the backrest and the seat can be at a safe angle; moreover, the fourth locking device and the second unlocking mechanism for triggering the unlocking of the fourth locking device provided in the present invention make it possible for the second unlocking mechanism to trigger the unlocking of the fourth locking device only when the present invention is in the swing state, which can also effectively prevent the possibility of misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the present invention when used as a dining chair.

[0019] Figure 2 It is a structural schematic diagram of the present invention when used as a swing.

[0020] Figure 3 It is a schematic diagram of the internal assembly structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the assembly structure of the multi-speed angle adjustment device of the present invention.

[0022] Figure 5 It is a schematic diagram of the exploded structure of the multi-speed angle adjustment device and the third locking device installed in coordination with each other in the present invention.

[0023] Figure 6 It is a schematic diagram of the local assembly structure of the present invention.

[0024] Figure 7It is a schematic diagram of the cooperative assembly structure of the first locking device, the second locking device and the sliding connecting rod of the present invention.

[0025] Figure 8 It is a structural schematic diagram of the lifting seat of the present invention.

[0026] Fig. 9 It is a schematic diagram of the local assembly structure of the present invention.

[0027] Fig.10 It is a schematic diagram of the assembly structure of the fourth locking device of the present invention.

[0028] Fig.11 It is a schematic diagram of the exploded structure of the fourth locking device of the present invention.

[0029] Fig.12 It is a schematic diagram of the exploded structure of the second unlocking mechanism of the present invention.

[0030] Fig.13 It is a schematic diagram of the linkage structure of the second unlocking mechanism of the present invention.

[0031] Fig.14 It is a schematic diagram of the assembly structure of the unlocking button of the present invention.

[0032] Fig.15 It is a schematic diagram of the assembly structure of the lifting seat and the swing arm of the present invention.

[0033] Figure 1-15 Middle: 1. Swing arm; 2. Seat body; 21. Seat; 211. Pull plate slide; 212. Latch slide; 213. Connecting rod slide; 214. Arc-shaped portion; 22. Backrest; 221. Linkage baffle; 3. Support frame; 4. Multi-speed angle adjustment device; 41. Shift block; 42. Arc-shaped groove; 43. Positioning block; 44. Positioning pin; 45. Shift slot; 451. Swing shift slot; 452. First non-swing shift slot; 453. Second non-swing shift slot; 46. Through hole; 5. Lifting seat; 51. Lifting button; 52. Lifting spring; 53. Slide; 61. Locking plate; 611. Locking slot; 612. Swing positioning slot; 62. Pull plate; 62 1. Lock pin; 622. Arc surface; 71. Pin hole; 72. Conversion latch; 721. Insertion hole; 722. Latch bevel; 8. Sliding connecting rod; 82. Connecting rod bevel; 83. Linkage column; 91. Lock button; 911. Spherical surface; 92. Bevel step; 10. Driver; 11. Height positioning hole; 111. Lock housing; 1111. Shielding part; 112. Lock seat; 1121. Lock hole; 1122. Lock seat slide; 113. Lock tongue; 1131. Lock column; 1132. Lock tongue bevel; 114. Trigger button; 1141. Button bevel; 115. Connecting rod; 121. Unlocking button; 1211. First rod part; 1212. Second rod part. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] like Figure 1-15 A swing dining chair shown includes a support frame 3, a swing arm 1 and a seat body 2. The swing arm 1 is rotatably connected to the support frame 3. A driver 10 for driving the swing arm 1 to swing is provided on the support frame 3. The driver 10 is a motor. The motor is equipped with a reduction mechanism. When the motor is started, the motor drives the swing arm 1 to rotate relative to the support frame 3, thereby realizing the function of a swing.

[0036] The chair body 2 includes a seat 21 and a backrest 22, and the seat 21 is rotatably connected to the backrest 22. A multi-speed angle adjustment device 4 is provided between the seat 21 and the backrest 22. The multi-speed angle adjustment device 4 is used to adjust the position of the backrest 22 relative to the seat 21 so that the two can stay at multiple angle positions. The angle positions include a swing angle position and a non-swing angle position. Generally speaking, when in the swing angle position, the angle between the backrest 22 and the seat 21 is relatively small; and when in the non-swing angle position, the angle between the backrest 22 and the seat 21 is relatively large, which can ensure safe use.

[0037] The multi-speed angle adjustment device 4 includes a gear block 41 arranged on the seat 21, the gear block 41 is provided with an arc groove 42 adapted to the rotation trajectory of the backrest 22, a positioning block 43 is movably provided on the backrest 22, the backrest 22 is provided with a cable (not shown in the figure) that cooperates with the positioning block 43, the positioning block 43 is provided with a positioning pin 44 that slides with the arc groove 42, and the groove wall of the arc groove 42 is provided with a plurality of gear grooves 45 for the positioning pin 44 to be inserted, and the plurality of gear grooves 45 are arranged at intervals.

[0038] In this embodiment, the groove wall of the arc groove 42 is provided with three gear grooves 45, namely, the swing gear groove 451, the first non-swing gear groove 452 and the second non-swing gear groove 453, wherein the first non-swing gear groove 452 is located between the swing gear groove 451 and the second non-swing gear groove 453. When the positioning pin 44 is inserted into the swing gear groove 451, the backrest 22 is in the swing angle gear relative to the seat 21, and when the positioning pin 44 is inserted into the first non-swing gear groove 452 or the second non-swing gear groove 453, the backrest 22 is in the non-swing angle gear relative to the seat 21.

[0039] A positioning block spring (not shown in the figure) is disposed between the positioning block 43 and the backrest 22 . The positioning block spring is used to enable the positioning pin 44 to have a movement tendency to snap into the gear slot 45 .

[0040] When the angle of the backrest 22 needs to be adjusted, the cable is only needed to be pulled, and the cable will drive the positioning block 43 to slide relative to the backrest 22, so that the positioning pin 44 will be disengaged from the corresponding gear slot 45. At this time, the user can move the backrest 22 forward and backward, and the positioning pin 44 will slide in the arc slot 42. When the backrest 22 is adjusted to a suitable position, the cable is only needed to be released, and the positioning block 43 will automatically reset under the action of the positioning block spring, and the positioning pin 44 will be stuck in the corresponding gear slot 45. For example, when the backrest 22 is adjusted to the first non-swing gear, the positioning pin 44 will be stuck in the first non-swing gear slot 452.

[0041] The swing arm 1 is provided with a lifting seat 5, which is slidably matched with the swing arm 1. The lifting seat 5 is sleeved on the swing arm 1. A plurality of height positioning holes 11 are arranged at intervals on the wall of the swing arm 1 along its length direction. A lifting button 51 matched with the height positioning hole 11 and a lifting spring 52 matched with the lifting button 51 are arranged in the lifting seat 5. The lifting spring 52 is used to make the lifting button 51 always have a movement tendency to be inserted into the height positioning hole 11. When it is necessary to adjust the height of the lifting seat 5, it is only necessary to pull the lifting button 51 to separate the lifting button 51 from the height positioning hole 11. At this time, the height of the lifting seat 5 can be adjusted. After adjusting to a suitable height, release the lifting button 51, and the lifting spring 52 will drive the lifting button 51 to be inserted into the corresponding height positioning hole 11 to achieve height adjustment.

[0042] The seat 21 is rotatably connected to the lifting seat 5. The seat 21 has at least a first angular position and a second angular position relative to the lifting seat 5. The first angular position is a dining chair state position (see Figure 1 ), the second angle position is the swing state position (see Figure 2 ).

[0043] A first locking device is provided between the seat 21 and the lifting seat 5, and the first locking device is used to lock the seat 21 so that it is relatively fixed with the lifting seat 5. The first locking device includes a locking plate 61 provided on the lifting seat 5, a pull plate 62 provided on the seat 21 and corresponding to the locking plate 61, a pull plate slide groove 211 is provided transversely on the seat 21, and the pull plate 62 slides transversely with the seat 21 through the pull plate slide groove 211, the locking plate 61 is provided with a locking groove 611, and the pull plate 62 is provided with a locking pin 621. In this embodiment, in order to ensure that the pull plate 62 and the locking plate 61 do not interfere when the seat 21 and the lifting seat 5 rotate relative to each other, an arc surface 622 adapted to the locking plate 61 is provided at one end of the pull plate 62 close to the locking plate 61, and the locking pin 621 is provided on the arc surface 622, and the seat 21 is provided with a pull plate spring (not shown in the figure) that abuts against the pull plate 62, and the pull plate spring abuts against the pull plate 62 so that the locking pin 621 is inserted into the locking groove 611.

[0044] In addition, in this embodiment, the locking plate 61 is provided with a swing positioning groove 612, which is located beside the locking groove 611, and the swing positioning groove 612 is plugged into the locking pin 621. When the swing dining chair is adjusted to the swing state, the locking pin 621 is plugged into the swing positioning groove 612, which can effectively ensure the stability of the seat body and prevent shaking.

[0045] The seat 21 is provided with a second locking device, which is used to lock the first locking device. The second locking device includes a pin hole 71 provided on the pull plate 62, a conversion latch 72 provided on the seat 21 and corresponding to the pull plate 62, a latch slot 212 is longitudinally provided on the seat 21, the conversion latch 72 is longitudinally slidably matched with the seat 21 through the latch slot 212, the conversion latch 72 is linked with the first unlocking mechanism, the seat 21 is provided with a latch spring (not shown in the figure) that abuts against the conversion latch 72, and the latch spring abuts against the conversion latch 72, so that the conversion latch 72 is inserted into the pin hole 71.

[0046] The seat 21 is provided with a first unlocking mechanism for unlocking the second locking device. The first unlocking structure includes a sliding link 8 movably arranged in the seat 21, a link slot 213 is transversely provided in the seat 21, the sliding link 8 slides transversely with the seat 21 through the link slot 213, the sliding link 8 is provided with a linkage column 83, the backrest 22 is provided with a linkage baffle 221, the conversion latch 72 is provided with a plug hole 721 for the end of the sliding link 8 to be inserted, the hole wall of the plug hole 721 is provided with a latch bevel 722, and the end of the sliding link 8 is provided with a plug. The pin bevel 722 cooperates with the connecting rod bevel 82; when the backrest 22 is adjusted from the non-swing angle position to the swing angle position relative to the seat 21, the linkage baffle 221 and the linkage column 83 are linked to each other, and the sliding connecting rod 8 moves toward the direction of the conversion pin 72, and the connecting rod bevel 82 and the pin bevel 722 are matched to make the conversion pin 72 disengage from the pin hole 71, and the first unlocking mechanism completes the unlocking of the second locking device, so that the first locking device is also in an active state.

[0047] In this embodiment, the specific operation is to pull the cable and pull the backrest 22, the backrest 22 rotates relative to the seat 21, and the positioning pin 44 moves along the arc groove 42. When the positioning pin 44 passes the first non-swing gear groove 452 and approaches the swing gear groove 451, the linkage baffle 221 begins to resist the linkage column 83. At this time, the backrest 22 drives the sliding link 8 to move, and the sliding link 8 drives the second locking device to unlock the first locking device.

[0048] It should be noted that when the positioning pin 44 moves between the first non-swing gear slot 452 and the second non-swing gear slot 453, since it is still in the non-swing gear, the linkage baffle 221 will not abut against the linkage column 83, that is, the sliding link 8 will not move. When the positioning pin 44 moves from the swing gear slot 451 to the first non-swing gear slot 452 or the second non-swing gear slot 453, the linkage baffle 221 no longer applies force to the linkage column 83. At this time, under the cooperation of the latch bevel 722 and the connecting rod bevel 82, the sliding link 8 is reset by the reverse force of the latch spring.

[0049] A third locking device is further provided between the seat 21 and the lifting seat 5, and the third locking device cooperates with the lifting seat 5. When the seat 21 is adjusted from the first angle position to the second angle position relative to the lifting seat 5 (that is, when adjusted from the dining chair state to the swing state), the lifting seat 5 drives the third locking device to lock the multi-speed angle adjustment device 4 at the swing angle position, that is, the backrest 22 is fixed at the swing angle position relative to the seat 21.

[0050] Specifically, the third locking device includes a locking button 91 movably arranged on the seat 21, and an inclined step 92 arranged on the lifting seat 5 and abutting against the locking button 91, and the inclined step 92 is spiral. The end of the locking button 91 close to the inclined step 92 is provided with a spherical surface 911, so that the inclined step 92 has a better triggering effect on the locking button 91. The arc groove 42 is provided with a through hole 46, and the through hole 46 is located between the gear slot 45 corresponding to the swing angle gear and the gear slot 45 corresponding to the non-swing angle gear adjacent to the swing angle gear. In this embodiment, the through hole 46 is located between the swing gear slot 451 and the first non-swing gear slot 452, and the end of the locking button 91 away from the inclined step 92 is movably inserted into the through hole 46.

[0051] When the seat 21 is converted from the first angular position to the second angular position relative to the lifting seat 5, during this process, the inclined step 92 pushes the locking button 91 to move, and the locking button 91 extends from the through hole 46, so that the locking button 91 locks the positioning pin 44 of the multi-speed angle adjustment device 4, and the locking button 91 is configured with a button spring, which is used to make the locking button 91 have a movement tendency to unlock the multi-speed angle adjustment device 4.

[0052] A fourth locking device is provided between the swing arm 1 and the support frame 3. The fourth locking device is used to lock the swing arm 1 so that it is relatively fixed to the support frame 3. The fourth locking device is located on the sliding track of the lifting seat 5. Specifically, the fourth locking device is arranged at the bottom of the swing arm 1 and the support frame 3. In this embodiment, the swing dining chair has two swing arms 1, and is equipped with fourth locking devices corresponding to the two swing arms 1 one by one.

[0053] The fourth locking device includes a lock shell 111, a lock seat 112, a lock tongue 113 and a trigger button 114. The lock shell 111 is fixedly arranged on the swing arm 1, and the lock seat 112 is rotatably arranged on the support frame 3. A connecting rod 115 is connected between the lock shells of the two fourth locking devices. The lock tongue 113 is movably arranged in the lock shell 111 along the horizontal direction. The lock seat 112 is provided with a lock hole 1121 for the lock tongue 113 to be inserted into. Specifically, a locking column 1131 that cooperates with the lock hole 1121 is convexly provided at one end of the lock tongue 113 close to the lock seat 112. When the fourth locking device is in a locked state, the opposite ends of the lock shell 111 and the lock seat 112 are in a close fit, which can effectively prevent users from accidentally touching the lock tongue 113, making it safer to use.

[0054] A first return spring (not shown in the figure) is arranged in the lock housing 111, and the first return spring is used to make the lock tongue 113 have a movement tendency to be inserted into the lock hole 1121. The trigger button 114 is arranged in the lock housing 111 along the longitudinal direction, and the upper end of the trigger button 114 is linked with the second unlocking mechanism, and the lower end of the trigger button 114 is linked with the lock tongue 113. Specifically, a lock tongue inclined surface 1132 is arranged on the lock tongue 113, and a button inclined surface 1141 that abuts against the lock tongue inclined surface 1132 is arranged on the lower end of the trigger button 114.

[0055] When the locking column 1131 of the locking tongue 113 is inserted into the locking hole 1121, the lock shell 111 and the lock seat 112 are in a connected state, and the locking device is locked. At this time, the swing arm 1 cannot swing relative to the support frame 3; when the trigger button 114 is pressed and moves downward, the button inclined surface 1141 pushes against the locking tongue inclined surface 1132, so that the locking tongue 113 overcomes the elastic force of the reset spring and moves laterally, and the locking column 1131 is disengaged from the locking hole 1121, and the fourth locking device is unlocked.

[0056] In this embodiment, in order to facilitate the locking column 1131 to detach from the lock seat 112 after escaping from the lock hole 1121, a lock seat sliding groove 1122 is provided on the side of the lock hole 1121 for the locking column 1131 to slide out of the lock seat 112. The depth of the lock hole 1121 is deeper than the depth of the lock seat sliding groove 1122 to ensure stability during locking. The inner end of the lock seat sliding groove 1122 is connected to the lock hole 1121, and the outer end of the lock seat sliding groove 1122 passes through the side wall of the lock seat 112. When the locking column 1131 detaches from the lock hole 1121, the locking column 1131 will slide into the lock seat sliding groove 1122. At this time, the user can pull the lock shell 111 and the lock seat 112 to detach the locking column 1131 from the lock seat 112.

[0057] The lock housing 111 has a shielding portion 1111, and the trigger button 114 is hidden in the shielding portion 1111. The upper end of the shielding portion 1111 is open. By adopting a hidden installation structure for the trigger button 114, the possibility of misoperation can be effectively avoided, and safety is further improved.

[0058] The lifting seat 5 is provided with a second unlocking mechanism for unlocking the fourth locking device. The second unlocking mechanism cooperates with the seat 21. When the seat 21 is adjusted from a first angular position to a second angular position relative to the lifting seat 5, the seat 21 drives the second unlocking mechanism to operate.

[0059] Specifically, the second unlocking mechanism includes an unlocking button 121 movably disposed in the lifting seat 5 and linked with the trigger button 114, and an arc portion 214 disposed on the seat portion 21 and linked with the unlocking button 121. The arc portion 214 is an arc plate formed on the outer wall of the seat body 2. The one-piece molding structure is beneficial to cost saving and more convenient installation. The arc portion 214 is located obliquely below the rotation fulcrum of the seat body 2 and the lifting seat 5, ensuring that the arc portion 214 can touch the unlocking button 121 when the seat body 2 rotates.

[0060] The unlocking button 121 includes a first rod portion 1211 and a second rod portion 1212 connected to each other. A slideway 53 slidably matched with the first rod portion 1211 is provided in the lifting seat 5. The first return spring is disposed between the lifting seat 5 and the first rod portion 1211. The first rod portion 1211 is linked to the trigger button 114. The second rod portion 1212 extends out of the lifting seat 5. The arc portion 214 is linked to the second rod portion 1212.

[0061] The length of the slide 53 is adapted to the length of the first rod 1211; when the seat body 2 is at the first angle position, the first rod 1211 is hidden in the slide 53; when the seat body 2 is at the second angle position, the end of the first rod 1211 extends out of the slide 53. By adopting the above structural design, when the swing dining chair is used as a dining chair, the unlocking end of the unlocking button 121 can be in a hidden state, which further prevents the possibility of misoperation and is more conducive to safe use.

[0062] The center of the arc portion 214 is eccentrically arranged relative to the rotation fulcrum of the seat body 2 and the lifting seat 5. The arc portion 214 is eccentrically arranged so that when the seat body 2 rotates from the first angle position to the second angle position, the arc portion 214 can act on the unlocking button 121, and when the seat body 2 rotates from the second angle position to the first angle position, the arc portion 214 will not act on the unlocking button 121.

[0063] A second return spring (not shown in the figure) that cooperates with the unlocking button 121 is disposed in the lifting seat 5 . The second return spring is used to ensure that the unlocking button 121 always has a movement tendency away from the trigger button 114 .

[0064] When the seat 21 is adjusted from the first angular position to the second angular position, during this process, the seat 21 will rotate relative to the lifting seat 5, and the arc portion 214 will contact the second rod portion 1212. The second rod portion 1212 drives the first rod portion 1211 to move downward along the lifting seat 5, so that it is in a position relative to the lifting seat 5 to press the trigger button 114 (that is, the lower end of the first rod portion 1211 extends from the slide 53). At this time, the lifting seat 5 slides downward, and when the unlocking end (that is, the lower end) of the second rod portion 1212 contacts the trigger button 114, the trigger button 114 moves downward due to the thrust of the second rod portion 1212, thereby driving the lock tongue 113 to move, and the locking column 1131 of the lock tongue 113 also disengages from the lock hole 1121 and slides into the lock seat slide groove 1122. At this time, the user pulls the lock shell 111 and the lock seat 112 to make the locking column 1131 disengage from the lock seat 112, thereby completing the unlocking of the locking device.

[0065] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A swing dining chair, comprising a support frame, a swing arm and a seat body, wherein the swing arm is rotatably connected to the support frame, a driver for driving the swing arm to swing is provided on the support frame, the seat body comprises a seat and a backrest, the seat is rotatably connected to the backrest, a multi-speed angle adjustment device is provided between the seat and the backrest, the multi-speed angle adjustment device is used to adjust the position of the backrest relative to the seat so that the two can stay at multiple angle gears, the angle gears include a swing angle gear and a non-swing angle gear, characterized in that: The swing arm is provided with a lifting seat, the lifting seat is slidably matched with the swing arm, the seat is rotatably connected with the lifting seat, and the seat has at least a first angular position and a second angular position relative to the lifting seat; A first locking device is provided between the seat and the lifting seat, the first locking device is used to lock the seat so that it is relatively fixed with the lifting seat, the seat is provided with a second locking device, the second locking device is used to lock the first locking device; the seat is provided with a first unlocking mechanism for unlocking the second locking device; When the backrest is adjusted from the non-swing angle gear to the swing angle gear relative to the seat, the first unlocking mechanism unlocks the second locking device; a third locking device is also provided between the seat and the lifting seat, and the third locking device cooperates with the lifting seat, and when the seat is adjusted from the first angle position to the second angle position relative to the lifting seat, the lifting seat drives the third locking device to lock the multi-speed angle adjustment device at the swing angle gear; a fourth locking device is provided between the swing arm and the support frame, and the fourth locking device is used to lock the swing arm so that it is relatively fixed to the support frame, and the fourth locking device is located on the sliding track of the lifting seat; the lifting seat is provided with a second unlocking mechanism for unlocking the fourth locking device, and the second unlocking mechanism cooperates with the seat, and when the seat is adjusted from the first angle position to the second angle position relative to the lifting seat, the seat drives the second unlocking mechanism to operate; The first locking device comprises a locking plate arranged on the lifting seat, a pull plate arranged on the seat and corresponding to the locking plate, the pull plate slidably cooperates with the seat, the locking plate is provided with a locking groove, the pull plate is provided with a locking pin, the seat is provided with a pull plate spring that abuts against the pull plate, the pull plate spring abuts against the pull plate, so that the locking pin is inserted into the locking groove; The second locking device comprises a pin hole provided in the pull plate, a conversion latch provided in the seat and corresponding to the pull plate, the conversion latch slidably cooperates with the seat, the conversion latch cooperates with the first unlocking mechanism, the seat is provided with a latch spring that abuts against the conversion latch, the latch spring abuts against the conversion latch, and the conversion latch is inserted into the pin hole; The first unlocking mechanism comprises a sliding link movably arranged in the seat portion, the sliding link is linked with the backrest, the conversion latch is provided with a plug hole for the end of the sliding link to be inserted, the hole wall of the plug hole is provided with a plug inclined surface, and the end of the sliding link is provided with a connecting rod inclined surface that cooperates with the plug inclined surface; The third locking device comprises a locking button movably arranged on the seat, and an inclined step arranged on the lifting seat and abutting against the locking button, wherein the locking button is provided with a button spring, and the button spring is used to make the locking button have a movement tendency to unlock the multi-speed angle adjustment device; The fourth locking device includes a lock shell, a lock seat, a lock tongue and a trigger button, the lock shell is arranged on the swing arm, the lock seat is arranged on the support frame, the lock tongue is arranged in the lock shell in a transverse direction, the lock seat is provided with a lock hole for the lock tongue to be inserted, a first return spring is arranged in the lock shell, the first return spring is used to make the lock tongue have a movement tendency to be inserted into the lock hole, the trigger button is arranged in the lock shell in a longitudinal direction, the upper end of the trigger button is linked with the second unlocking mechanism, and the lower end of the trigger button is linked with the lock tongue; The second unlocking mechanism includes an unlocking button movably arranged in the lifting seat and linked with the trigger button, and an arc portion arranged in the seat and linked with the unlocking button. The center of the arc portion is eccentrically arranged relative to the rotation fulcrum of the seat body and the lifting seat. A second return spring is arranged in the lifting seat to resist and cooperate with the unlocking button. The second return spring is used to make the unlocking button always have a movement tendency away from the trigger button.

2. The swing dining chair according to claim 1, characterized in that: When the backrest is adjusted from the non-swing angle position to the swing angle position relative to the seat, the sliding link moves toward the conversion pin, and the link slope is matched with the pin slope to make the conversion pin come out of the pin hole.

3. The swing dining chair according to claim 1, characterized in that: The sliding link is provided with a linkage column, and the backrest is provided with a linkage baffle; when the backrest is adjusted from the non-swing angle gear to the swing angle gear relative to the seat, the linkage baffle and the linkage column are linked and abutted.

4. The swing dining chair according to claim 1, characterized in that: When the seat portion is converted from the first angular position to the second angular position relative to the lifting seat, the inclined step pushes the locking button to move, so that the locking button locks the multi-stage angle adjustment device.

5. The swing dining chair according to claim 4, characterized in that: The multi-speed angle adjustment device includes a gear block arranged on the seat portion, the gear block is provided with an arc-shaped groove adapted to the rotation trajectory of the backrest, a positioning block is movably provided on the backrest, the backrest is provided with a cable that cooperates with the positioning block, the positioning block is provided with a positioning pin that slides with the arc-shaped groove, the groove wall of the arc-shaped groove is provided with a plurality of gear grooves for the positioning pin to be inserted into, and the plurality of gear grooves are arranged at intervals; a positioning block spring is provided between the positioning block and the backrest, and the positioning block spring is used to make the positioning pin have a movement tendency to be inserted into the gear groove.

6. The swing dining chair according to claim 5, characterized in that: The arc-shaped groove is provided with a through hole, which is located between the gear slot corresponding to the swing angle gear and the gear slot corresponding to the non-swing angle gear adjacent to the swing angle gear, and the end of the locking button away from the inclined step is movably inserted in the through hole.

7. The swing dining chair according to claim 1, characterized in that: When the trigger button is pressed, the trigger button drives the lock tongue to overcome the elastic force of the first return spring and move laterally, so that the fourth locking device is unlocked.

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