Chair with foot support

Abstract

The utility model belongs to the technical field of chairs, and particularly relates to a chair with a foot support, which comprises a chair seat, a chair back and a chair frame arranged below the chair seat, the bottom end of the chair back is rotatably connected with the chair seat, a support rod is arranged at the bottom of the chair seat, a sliding space is formed in the support rod, and a foot support component is arranged in the sliding space in a sliding manner. The foot support assembly comprises a foot support plate and a sliding rod, one end of the sliding rod is arranged in the sliding space in a sliding mode, a sliding groove channel is formed in the inner wall of the sliding space, a limiting piece is arranged on the sliding rod, the limiting piece is arranged in the sliding groove channel and can abut against the supporting rod, a mounting rod is arranged at the other end of the sliding rod, and a limiting block is arranged on the mounting rod. The foot supporting plate is rotationally connected with the mounting rod, an abutting part is arranged on the foot supporting plate, and the abutting part can abut against the limiting block, the chair is simple in structure and provided with the foot support, and when a user has a noon break, the foot can be placed on the foot support, so that the user feels more comfortable.

Description

Technical Field

[0001] The utility model belongs to the technical field of chairs, in particular to a chair with a footrest. Background Art

[0002] As the pace of life accelerates, people's rest time at home is gradually reduced, and lunch break has become one of the precious rest time for people at work. People usually take lunch breaks in the office, but the chairs in the office are fixed, so people can only take lunch breaks by lying on their desks. However, sleeping on your stomach will affect blood circulation, cause numbness in your arms, and affect your sleep.

[0003] Therefore, a reclining chair has appeared on the market, which is easier for users to relax physically and mentally than traditional chairs. However, although the reclining chair on the market can be laid flat for users to rest, its feet lack support. When people take a lunch break, their legs and feet are still on the ground or suspended in the air, which affects the quality of lunch break. Therefore, it is necessary to provide a chair with a footrest. Summary of the invention

[0004] The utility model aims to provide a chair with a simple structure and a footrest, on which the user can place his feet during lunch break, making the user more comfortable.

[0005] The purpose of the utility model is achieved in this way:

[0006] A chair with a footrest comprises a seat, a seat back and a chair frame arranged below the seat, the bottom end of the seat back is rotatably connected to the seat, a support rod is provided at the bottom of the seat, a sliding space is formed in the support rod, a footrest assembly is slidably arranged in the sliding space, the footrest assembly comprises a footrest plate and a sliding rod, one end of the sliding rod is slidably arranged in the sliding space, a sliding groove is formed on the inner wall of the sliding space, a limiting piece is provided on the sliding rod, the limiting piece is arranged in the sliding groove and can abut against the support rod, the other end of the sliding rod is provided with a mounting rod, the mounting rod is provided with a limiting block, the footrest plate is rotatably connected to the mounting rod, and an abutting portion is provided on the footrest plate, and the abutting portion can abut against the limiting block.

[0007] Furthermore, a threaded hole is provided on the sliding rod, and an external thread is provided on the limiting member. The limiting member is arranged in the threaded hole and is threadedly connected to the sliding rod. The outer end of the limiting member passes through the sliding groove and is exposed outside the support rod. The outer end of the limiting member is provided with an abutment block, and the abutment block can abut against the support rod.

[0008] Furthermore, the foot support plate includes a left foot support plate and a right foot support plate which are symmetrically arranged, the abutting portion is respectively arranged on the inner side of the left foot support plate and the right foot support plate, through holes are opened on the left foot support plate and the right foot support plate, the two ends of the mounting rod are respectively arranged in the through holes of the left foot support plate and the right foot support plate, a middle fixed sleeve of the mounting rod is provided with a limit sleeve, the limit block is arranged at the bottom of the limit sleeve, and the left foot support plate and the right foot support plate can rotate relative to the limit sleeve.

[0009] Furthermore, fixing holes are provided on the abutting parts of the left foot support plate and the right foot support plate, fixing rods are provided in the fixing holes, and the upper surfaces of the left foot support plate and the right foot support plate are both formed with inner concave surfaces.

[0010] Furthermore, armrests are provided on both sides of the seat, and backrest rods are provided on both sides of the bottom end of the chair back. The seat includes a seat plate and a seat frame, and the seat frame is connected to the chair frame. Hinge parts are fixedly installed on both sides of the seat frame, and a connecting rod is provided between the hinge parts. Both ends of the connecting rod are provided with hinge plates, and the middle part of the hinge plate is hinged to the hinge part. Rotating grooves are symmetrically opened on the seat plate, and the top end of the hinge plate passes through the rotating groove to be connected to the backrest rod.

[0011] Furthermore, the hinge plate is in an arc shape, and the hinge plate can abut against the seat frame.

[0012] Furthermore, a mounting portion is provided on the support rod, an adjusting cylinder and a control switch for adjusting the operation of the adjusting cylinder are provided under the seat frame, a cylinder rod is provided at one end of the adjusting cylinder, one end of the cylinder rod is connected to the mounting portion, a mounting plate is symmetrically provided at the middle part of the connecting rod, and a connecting portion is provided at the other end of the adjusting cylinder, and the connecting portion is arranged between the symmetrical mounting plates and rotatably connected to the mounting plates.

[0013] Furthermore, a backrest portion is provided at the top of the chair back, and a first fixing plate and a second fixing plate are provided on the rear side of the chair back, a rotation space is formed between the first fixing plate and the second fixing plate, and a connecting rod is provided on the backrest portion, and the connecting rod is arranged in the rotation space and is rotatably connected to the fixing plate, and the backrest portion can be rotated relative to the chair back.

[0014] Furthermore, the first fixing plate and the second fixing plate are both provided with a rotating hole, the connecting rod is provided with a connecting hole, the connecting hole and the rotating hole are provided with a hinge rod, the connecting rod is provided with a control component for controlling the rotation of the connecting rod, the control component includes a limit rod and a control member, the first fixing plate and the second fixing plate are respectively provided with a first rotating groove and a second rotating groove, the connecting rod is provided with a through hole penetrating the connecting rod, one end of the limit rod is arranged in the second rotating groove through the through hole, the inner end of the control member is provided with a moving groove, and the other end of the connecting rod is arranged in the moving groove, The control member can move left and right relative to the connecting rod, and a baffle is fixedly provided on the control member, which can abut against the inner wall of the connecting rod. The outer end of the control member passes through the through hole and the first rotating channel and is arranged outside the first fixed plate. A clamping groove is provided in the first rotating channel. A clamping portion is extended and formed on the control member, and the clamping portion is arranged in the clamping groove and clamped with the first fixed plate. At this time, the connecting rod cannot rotate relative to the second fixed plate. Pressing the outer end of the control member can release the clamping state between the clamping portion and the first fixed plate, and the connecting rod can rotate relative to the second fixed plate.

[0015] Furthermore, the control component includes a return spring, which is sleeved on the limiting rod, and two ends of the return spring are respectively in contact with the inner side of the second fixing plate and the inner end of the control component.

[0016] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0017] A chair with a footrest comprises a seat, a chair back and a chair frame arranged below the seat, the bottom end of the chair back is rotatably connected to the seat, a support rod is arranged at the bottom of the seat, a sliding space is formed in the support rod, a footrest assembly is slidably arranged in the sliding space, the footrest assembly comprises a footrest plate and a sliding rod, one end of the sliding rod is slidably arranged in the sliding space, a sliding groove is formed on the inner wall of the sliding space, a limiting piece is arranged on the sliding rod, the limiting piece is arranged in the sliding groove and can abut against the support rod, the other end of the sliding rod is provided with a mounting rod, The limit block, the foot support plate is rotatably connected to the mounting rod, and the foot support plate is provided with an abutment portion, which can abut against the limit block; since one end of the sliding rod is slidably arranged in the sliding space of the support rod, and the foot support plate is rotatably connected to the mounting rod at the other end of the sliding rod, when the user takes a lunch break, the sliding rod can be pulled out of the sliding space of the support rod, so that the foot support plate at the other end of the sliding rod is exposed from under the seat; since the limit piece on the sliding rod is arranged in the sliding channel of the support rod and can abut against the support rod, it can prevent the sliding rod from being pulled out of the sliding space when the user pulls the sliding rod, which can To prevent the footrest assembly from falling to the ground, when the footrest is exposed from under the seat, the user can rotate the footrest to unfold it so that the user can place the foot on the footrest normally. A limit block is provided on the mounting rod, and an abutment portion that can abut against the limit block is provided on the footrest. When the user rotates the upper surface of the footrest to a flat state, the abutment portion on the footrest will abut against the limit block, thereby limiting the footrest from continuing to rotate. After the user places the foot on the footrest, the footrest will not rotate either, which will not affect the user's normal use. Moreover, since the bottom end of the chair back is rotatably connected to the seat, The user can also adjust the angle between the chair back and the seat so that the chair back can be rotated backwards to make the user more comfortable during lunch break. Compared with the reclining chairs on the market, which require the chair back to be laid flat when used, the user's legs and feet are still on the ground or suspended in the air during lunch break, which affects the quality of the user's lunch break. During lunch break, the user of the utility model can pull the footrest out from under the seat and then rotate the footrest so that the footrest can be unfolded and the user can place his feet on the footrest. In addition, the user can adjust the angle between the chair back and the seat according to his actual needs, so that the user can be more comfortable during lunch break. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereogram of the utility model.

[0019] Figure 2 It is a stereogram of the utility model.

[0020] Figure 3 It is a schematic diagram of the opening of the footrest assembly of the utility model.

[0021] Figure 4It is a schematic diagram of the opening of the footrest assembly of the utility model.

[0022] Figure 5 It is an exploded view of the seat plate and the seat frame of the utility model.

[0023] Figure 6 It is a three-dimensional diagram of the seat plate of the utility model.

[0024] Figure 7 It is a structural schematic diagram of the support rod and the sliding rod of the utility model.

[0025] Figure 8 It is an exploded view of the support rod and the sliding rod of the utility model.

[0026] Fig. 9 It is an exploded view of the mounting rod and the foot support plate of the utility model.

[0027] Fig.10 It is an exploded view of the footrest of the utility model.

[0028] Fig.11 It is an exploded view of the chair back and the seat frame of the utility model.

[0029] Fig.12 It is a three-dimensional diagram of a chair back and a headrest of the utility model.

[0030] Fig.13 yes Fig.12 A partial enlarged view of point A in the middle.

[0031] Fig.14 It is an exploded view of the chair back and the headrest of the utility model.

[0032] Fig.15 yes Fig.14 A partial enlarged view of point C in the middle.

[0033] Fig.16 It is an exploded view of the head and the control assembly of the utility model.

[0034] Fig.17 It is a structural schematic diagram of the control component of the utility model.

[0035] Fig.18 It is an exploded view of the control component of the utility model.

[0036] Fig.19 It is a three-dimensional diagram of a chair back and a seat plate of the utility model.

[0037] Fig. 20 yes Fig.19 A partial enlarged view of point B in the middle.

[0038] Fig.21 It is a schematic diagram of the folding of the headrest of the utility model.

[0039] The meanings of the numbers in the figure are as follows: 1-seat; 2-backrest; 3-chair frame; 4-support rod; 5-sliding space; 6-foot support plate; 7-sliding rod; 8-sliding channel; 9-limiting member; 10-mounting rod; 11-limiting block; 12-abutment portion; 13-threaded hole; 14-abutment block; 15-left foot support plate; 16-right foot support plate; 17-through hole; 18-limiting sleeve; 19-fixing hole; 20-armrest; 21-backrest rod; 22-seat plate;

[0040] 23-seat frame; 24-hinged portion; 25-connecting rod; 26-hinged plate; 27-rotating channel;

[0041] 28-installation part; 29-adjusting cylinder; 30-control switch; 31-cylinder rod; 32-installation plate;

[0042] 33-connecting part; 34-head support; 35-first fixing plate; 36-rotation space; 37-connecting rod;

[0043] 38-rotation hole; 39-connection hole; 40-hinged rod; 41-control member; 42-limiting rod;

[0044] 43 - first rotating channel; 44 - second rotating channel; 45 - through hole; 46 - movable groove; 47 - snap-fit ​​groove; 48 - reset spring; 49 - snap-fit ​​part; 50 - fixing rod; 51 - second fixing plate; 52 - blocking piece. DETAILED DESCRIPTION

[0045] The utility model is further described below in conjunction with specific embodiments:

[0046] A chair with a footrest, comprising a seat 1, a seat back 2 and a chair frame 3 arranged below the seat 1, wherein the bottom end of the seat back 2 is rotatably connected to the seat 1, a support rod 4 is provided at the bottom of the seat 1, a sliding space 5 is formed in the support rod 4, a footrest assembly is slidably arranged in the sliding space 5, the footrest assembly comprises a footrest plate 6 and a sliding rod 7, one end of the sliding rod 7 is slidably arranged in the sliding space 5, a sliding groove 8 is opened on the inner wall of the sliding space 5, a limiting member 9 is provided on the sliding rod 7, the limiting member 9 is arranged in the sliding groove 8 and can abut against the support rod 4, the other end of the sliding rod 7 is provided with a mounting rod 10, the mounting rod 10 A limit block 11 is provided on the foot support plate 6, and the foot support plate 6 is rotatably connected to the mounting rod 10. The foot support plate 6 is provided with an abutment portion 12, and the abutment portion 12 can abut against the limit block 11; since one end of the sliding rod 7 is slidably arranged in the sliding space 5 of the support rod 4, and the foot support plate 6 is rotatably connected to the mounting rod 10 at the other end of the sliding rod 7, when the user takes a lunch break, the sliding rod 7 can be pulled out of the sliding space 5 of the support rod 4, so that the foot support plate 6 at the other end of the sliding rod 7 is exposed from under the seat 1, and since the limit piece 9 on the sliding rod 7 is arranged in the sliding groove 8 of the support rod 4 and can abut against the support rod 4, it can prevent the sliding rod 7 from being pulled out of the sliding space when the user pulls the sliding rod 7. When the user places the foot on the footrest 6, the footrest 6 will not rotate, and the normal use of the user will not be affected. The bottom end of the chair back 2 is rotatably connected to the seat 1, and the user can also adjust the angle between the chair back 2 and the seat, so that the chair back 2 can be rotated backward to make the user more comfortable during lunch break. Compared with the reclining chairs on the market, the chair back 2 needs to be laid flat when used, and the user's legs and feet are still on the ground or suspended in the air during lunch break, which affects the quality of the user's lunch break. During lunch break, the user of the utility model can pull the footrest 6 out from under the seat 1 and then rotate the footrest 6, so that the footrest 6 is unfolded and the user can place his feet on the footrest 6, and the user can adjust the angle between the chair back 2 and the seat 1 according to his actual needs, so that the user can be more comfortable during lunch break.

[0047] Preferably, a threaded hole 13 is provided on the sliding rod 7, and an external thread is provided on the limiting member 9. The limiting member 9 is arranged in the threaded hole 13 and is threadedly connected to the sliding rod 7. The outer end of the limiting member 9 passes through the sliding channel 8 and is exposed outside the support rod 4. The outer end of the limiting member 9 is provided with an abutment block 14, and the abutment block 14 can abut against the support rod 4; the limiting member 9 is installed on the sliding rod 7 through the threaded hole 13, and the abutment block 14 at the outer end of the limiting member 9 can abut against the support rod 4. When the user rotates the limiting member 9, the abutment block 14 at the outer end of the limiting member 9 will abut against the support rod 4, thereby limiting the sliding of the sliding rod 7 in the support rod 4 The dynamic space 5 continues to move, so that after the user places the foot on the footrest 6, the sliding rod 7 and the footrest 6 will not move, and will not affect the user's experience. When the user places the foot on the footrest, the shoe on the sole may come into contact with the footrest, causing the dirt on the sole to adhere to the footrest 6. After a long time, the footrest 6 needs to be cleaned. The user can rotate the limit member 9 to disengage the limit member 9 from the threaded hole 13 and separate it from the sliding rod 7. At this time, the sliding rod 7 can be taken out of the sliding space 5 in the support rod 4, thereby separating the sliding rod 7, the footrest 6 and the seat 1, thereby facilitating the user to clean the footrest.

[0048] Preferably, the foot support plate 6 comprises a symmetrically arranged left foot support plate 15 and a right foot support plate 16, the abutting portion 12 is respectively arranged on the inner side of the left foot support plate 15 and the right foot support plate 16, a through hole 17 is opened on the left foot support plate 15 and the right foot support plate 16, the two ends of the mounting rod 10 are respectively arranged in the through hole 17 of the left foot support plate 15 and the through hole 17 of the right foot support plate 16, a middle fixed sleeve of the mounting rod 10 is provided with a limiting sleeve 18, the limiting block 11 is arranged at the bottom of the limiting sleeve 18, and the left foot support plate 15 and the right foot support plate 16 can rotate relative to the limiting sleeve 18; the mounting rod 1 The two ends of 0 are respectively arranged in the through holes 17 of the left foot support plate 15 and the right foot support plate 16, so that the left foot support plate 15 and the right foot support plate 16 can rotate relative to the mounting rod 10, and a limiting sleeve 18 is fixed to the middle part of the mounting rod 10, and abutment portions 12 are provided on the inner sides of the left foot support plate 15 and the right foot support plate 16. When the left foot support plate 15 and the right foot support plate 16 rotate a certain angle relative to the limiting sleeve 18, the abutment portion 12 can smoothly abut against the limiting block 11 on the limiting sleeve 18, thereby smoothly limiting the left foot support plate 15 and the right foot support plate 16 from continuing to rotate, and will not affect the normal use of the user.

[0049] Preferably, a fixing hole 19 is provided on the abutting portion 12 of the left foot support 15 and the abutting portion 12 of the right foot support 16, and a fixing rod 50 is provided in the fixing hole 19, and the upper surfaces of the left foot support 15 and the right foot support 16 are both formed with an inner concave surface; the left foot support 15 and the right foot support 16 pass through the fixing holes 19 of the abutting portions 12 of the two through the fixing rod 50 so that the left foot support 15 and the right foot support 16 can be fixedly connected together, and when the user uses the foot support 6, he only needs to rotate the left foot support 15 or the right foot support 16, so that the left foot support 15 and the right foot support 16 can be unfolded at the same time, reducing the steps of unfolding the foot support 6, making it more convenient and quick for the user to use, and the upper surfaces of the left foot support 15 and the right foot support 16 are both formed with an inner concave surface, which is convenient for the user to place his legs and more comfortable.

[0050] Preferably, armrests 20 are provided on both sides of the seat 1, and backrest rods 21 are provided on both sides of the bottom end of the chair back 2. The seat 1 includes a seat plate 22 and a seat frame 23, and the seat frame 23 is connected to the chair frame 3. Both sides of the seat frame 23 are fixedly installed with hinged parts 24, and a connecting rod 25 is provided between the hinged parts 24. Both ends of the connecting rod 25 are provided with hinged plates 26, and the middle part of the hinged plate 26 is hinged to the hinged part 24. Rotating grooves 27 are symmetrically opened on the seat plate 22, and the top of the hinged plate 26 passes through the rotating groove 27 and is connected to the backrest rod 21; the provision of the armrests 20 can prevent the user from falling to the ground during lunch break, increasing The safety of the chair is ensured, and when the chair is in normal use, the user can also put his arms on the armrests 20 to rest, making the user more comfortable and increasing the practicality of the chair. Since the two sides of the seat frame 23 are fixedly installed with hinged parts 24, the middle parts of the hinged plates 26 at both ends of the connecting rod 25 are respectively hinged to the hinged parts 24 on both sides of the seat frame 23, and the top end of the hinged plate 26 passes through the rotating groove 27 on the seat plate 22 and is connected to the seat back rod 21 at the bottom end of the seat back 2. The seat back 2 is installed on the seat plate 22 by connecting the seat back rod 21 at the bottom end and the hinged plate 26, and the setting of the rotating groove 27 enables the user to drive the seat back 2 to rotate smoothly along the rotating groove 27.

[0051] Preferably, the hinge plate 26 is in the shape of an arc, and the hinge plate 26 can be in contact with the seat frame 23; when the chair back 2 is rotated, the chair back rod 21 at the bottom end of the chair back 2 will drive the hinge plate 26 to rotate together with the chair back 2. Since the middle part of the hinge plate 26 is hinged to the hinge part 24, and the shape of the hinge plate 26 is in the shape of an arc, when the hinge plate 26 is rotated to a certain angle relative to the hinge part 24, the inner end surface of the lower half of the hinge plate 26 will contact the lower surface of one side of the seat frame 23, thereby preventing the chair back 2 from continuing to rotate backward and will not affect the normal use of the user.

[0052] Preferably, a mounting portion 28 is provided on the support rod 4, an adjusting cylinder 29 and a control switch 30 for adjusting the operation of the cylinder 29 are provided below the seat frame 23, one end of the adjusting cylinder 29 is provided with a cylinder rod 31, one end of the cylinder rod 31 is connected to the mounting portion 28, a mounting plate 32 is symmetrically provided in the middle of the linkage rod 25, and a connecting portion 33 is provided at the other end of the adjusting cylinder 29, and the connecting portion 33 is arranged between the symmetrical mounting plates 32 and is rotatably connected to the mounting plates 32; when the chair back 2 rotates backward, the hinged plate 26 will be driven to rotate, and the hinged plate 26 is arranged at both ends of the linkage rod 25, and when the hinged plate 26 rotates, the linkage rod 25 will also be driven to rotate, because the cylinder rod 31 at one end of the adjusting cylinder 29 is fixedly connected to the mounting portion 28 on the support rod 4, and the connecting portion 33 at the other end of the adjusting cylinder 29 is arranged between the symmetrical mounting plates 32 and is rotatably connected to the mounting plates 32, at this time, the linkage rod 25 is in a state where it cannot rotate, so that the chair back 2 When the backrest 2 is rotated to the position desired by the user, the user can release the control switch 30, and the cylinder rod 31 will stop retracting inwards, thereby returning the linkage rod 25 to the state where it cannot rotate. At this time, the backrest 2 cannot continue to rotate. The setting of the adjustment cylinder 29 and the control switch 30 enables the user to adjust the rotation angle of the backrest 2 according to his actual needs, so that the user can be more comfortable during lunch break. After the lunch break is completed, the user can also control the cylinder rod 31 to extend outwards through the control switch 30, thereby driving the linkage rod 25 to rotate in the opposite direction to restore the backrest 2 to the normal state. The operation is simple, fast and convenient.

[0053] Preferably, a headrest 34 is provided at the top of the chair back 2, and a first fixing plate 35 and a second fixing plate 51 are provided on the rear side of the chair back 2, a rotation space 36 is formed between the first fixing plate 35 and the second fixing plate 51, and a connecting rod 37 is provided on the headrest 34, and the connecting rod 37 is arranged in the rotation space 36 and is rotatably connected to the fixing plate, so that the headrest 34 can be rotated relative to the chair back 2; the headrest 34 is arranged in the rotation space 36 and is rotatably connected to the first fixing plate 35 and the second fixing plate 51 through the connecting rod 37, so that the headrest 34 can be smoothly rotated backward relative to the chair back 2, when the user wants to use the headrest 34, the headrest 34 can be rotated forward to a position in the same plane as the chair back 2, when the user does not need to use the headrest 34, the headrest 34 can be rotated toward the rear side of the chair back 2, so that the headrest 34 and the chair back 2 are folded up, so that the user can choose whether to use the headrest 34 according to their actual needs, thereby increasing the practicality of the chair.

[0054] Preferably, the first fixing plate 35 and the second fixing plate 51 are both provided with a rotation hole 38, the connecting rod 37 is provided with a connecting hole 39, the connecting hole 39 and the rotating hole 38 are provided with a hinge rod 40, the connecting rod 37 is provided with a control component for controlling the rotation of the connecting rod 37, the control component includes a limit rod 42 and a control member 41, the first fixing plate 35 and the second fixing plate 51 are respectively provided with a first rotation groove 43 and a second rotation groove 44, the connecting rod 37 is provided with a through hole 45 that penetrates the connecting rod 37, one end of the limit rod 42 is arranged in the second rotation groove 44 through the through hole 45, the inner end of the control member 41 is provided with a moving groove 46, and the other end of the connecting rod 37 is arranged in the moving groove 4 6, the control member 41 can move left and right relative to the connecting rod 37, and a baffle 52 is fixedly provided on the control member 41, and the baffle 52 can abut against the inner wall of the connecting rod 37. The outer end of the control member 41 passes through the through hole 45 and the first rotating channel 43 and is arranged outside the first fixed plate 35. The first rotating channel 43 is provided with a clamping groove 47. A clamping portion 49 is extended and formed on the control member 41, and the clamping portion 49 is arranged in the clamping groove 47 and clamped with the first fixed plate 35. At this time, the connecting rod 37 cannot rotate relative to the second fixed plate 51. Pressing the outer end of the control member 41 can release the clamping state between the clamping portion 49 and the first fixed plate 35. At this time, the connecting rod 37 can rotate relative to the second fixed plate 51;The connecting rod 37 is rotatably connected to the first fixing plate 35 and the second fixing plate 51 through the connecting hole 39 on the connecting rod 37 and the rotating hole 38 on the first fixing plate 35 and the second fixing plate 51 through the hinge rod 40, so that the headrest 34 can rotate normally relative to the fixing plate, and the connection between the connecting rod 37 and the first fixing plate 35 and the second fixing plate 51 is more stable and firm. Since the limiting rod 42 and the control member 41 are arranged in the connecting rod 37, and one end of the limiting rod 42 passes through the through hole 45 on the connecting rod 37 and is arranged in the second rotating groove 44 of the second fixing plate 51, the outer end of the control member 41 passes through the through hole 45 and the first rotating groove 43 and is arranged outside the first fixing plate 35, and since the other end of the limiting rod 42 is arranged in the moving groove 46 at the inner end of the control member 41, the control member 41 has no fixed connection relationship with the limiting rod 42, so the control member 41 can move left and right relative to the limiting rod 42, and since the blocking piece 52 on the control member 41 can abut against the inner wall of the connecting rod 37, it can avoid the control member 41 from being in a state of ... The control member 41 is separated from the through hole 45 and the first rotation channel 43, so that the user can normally lean his head against the headrest 34, and the extended clamping portion 49 on the control member 41 is arranged in the clamping groove 47 in the first rotation channel 43 and is clamped with the first fixing plate 35, thereby limiting the control member 41 from rotating along the first rotation channel 43. The control member 41 cannot move, so that the limiting rod 42 cannot rotate along the second channel, thereby preventing the headrest 34 from rotating freely, which is equivalent to the chair back 2. When the user does not want to use the headrest 34, the user can press the control member 41 to move the control member 41 inward to a certain distance, and the clamping portion 49 on the control member 41 will be separated from the clamping groove 47 and the first fixing plate 35 will be released. At this time, the control member 41 can rotate along the first rotation channel 43, and the limiting rod 42 can rotate with the control member 41, so that the headrest 34 can smoothly rotate backwards, and the headrest 34 can be folded relative to the chair back 2. ;

[0055] Preferably, the control component includes a return spring 48, and the return spring 48 is sleeved on the limit rod 42, and the two ends of the return spring 48 are respectively abutted against the inner side of the second fixing plate 51 and the inner end of the control member 41; since the two ends of the return spring 48 on the limit rod 42 are respectively abutted against the inner side of the second fixing plate 51 and the inner end of the control member 41, when the user wants to fold the headrest 34 relative to the chair back 2, the user presses the control member 41 to move inward, and the control member 41 will make the return spring 48 enter a compressed state. At this time, after the headrest 34 is folded, the return spring 48 will remain in a compressed state. When the user wants to unfold the headrest 34, he only needs to rotate the headrest 34 forward, and the headrest 34 will drive the control member 41 and the limit rod through the connecting rod 37. 42 rotates along the first rotating groove 43 and the second rotating groove 44 respectively. When the control member 41 moves along the first rotating groove 43 to the position corresponding to the locking groove 47, the compressed return spring 48 will push the control member 41 to move outward. When the control member 41 moves outward for a certain distance, the blocking piece 52 on the control member 41 will abut against the inner wall of the connecting rod 37 to prevent the control member 41 from escaping from the through hole 45 and the first rotating groove 43, and the locking portion 49 on the control member 41 will automatically re-enter the locking groove 47 and enter a locking state with the first fixing plate 35. There is no need for the user to manually pull the control member 41 to move outward, and when the user leans his head on the headrest 34, the headrest 34 will not rotate backward, so that the user can use the headrest 34 normally.

[0056] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A chair with a footrest, comprising a seat (1), a seat back (2) and a chair frame (3) arranged below the seat (1), characterized in that: The bottom end of the chair back (2) is rotatably connected to the chair seat (1); a support rod (4) is provided at the bottom of the chair seat (1); a sliding space (5) is formed in the support rod (4); a foot support assembly is slidably provided in the sliding space (5); the foot support assembly comprises a foot support plate (6) and a sliding rod (7); one end of the sliding rod (7) is slidably arranged in the sliding space (5); a sliding groove (8) is opened on the inner wall of the sliding space (5); a limiting member (9) is provided on the sliding rod (7); the limiting member (9) is arranged in the sliding groove (8) and can abut against the support rod (4); a mounting rod (10) is provided at the other end of the sliding rod (7); a limiting block (11) is provided on the mounting rod (10); the foot support plate (6) is rotatably connected to the mounting rod (10); an abutting portion (12) is provided on the foot support plate (6); the abutting portion (12) can abut against the limiting block (11).

2. A chair with a footrest according to claim 1, characterized in that: The sliding rod (7) is provided with a threaded hole (13), the limiting member (9) is provided with an external thread, the limiting member (9) is arranged in the threaded hole (13) and is threadedly connected with the sliding rod (7), the outer end of the limiting member (9) passes through the sliding channel (8) and is exposed outside the support rod (4), and the outer end of the limiting member (9) is provided with an abutment block (14), and the abutment block (14) can abut against the support rod (4).

3. A chair with a footrest according to claim 1, characterized in that: The foot support plate (6) comprises a symmetrically arranged left foot support plate (15) and a right foot support plate (16); the abutment portion (12) is respectively arranged on the inner side of the left foot support plate (15) and the right foot support plate (16); through holes (17) are provided on the left foot support plate (15) and the right foot support plate (16); the two ends of the mounting rod (10) are respectively arranged in the through holes (17) of the left foot support plate (15) and the through holes (17) of the right foot support plate (16); a middle fixed sleeve of the mounting rod (10) is provided with a limiting sleeve (18); the limiting block (11) is arranged at the bottom of the limiting sleeve (18); the left foot support plate (15) and the right foot support plate (16) can rotate relative to the limiting sleeve (18).

4. A chair with a footrest according to claim 3, characterized in that: A fixing hole (19) is provided on the abutting portion (12) of the left foot support plate (15) and the abutting portion (12) of the right foot support plate (16), a fixing rod (50) is provided in the fixing hole (19), and the upper surfaces of the left foot support plate (15) and the right foot support plate (16) are both formed with an inner concave surface.

5. A chair with a footrest according to any one of claims 1 to 4, characterized in that: Armrests (20) are provided on both sides of the seat (1), and backrest rods (21) are provided on both sides of the bottom end of the backrest (2). The seat (1) includes a seat plate (22) and a seat frame (23), and the seat frame (23) is connected to the chair frame (3). A hinge part (24) is fixedly installed on both sides of the seat frame (23), and a connecting rod (25) is provided between the hinge parts (24). Both ends of the connecting rod (25) are provided with hinge plates (26), and the middle part of the hinge plate (26) is hinged to the hinge part (24). The seat plate (22) is symmetrically provided with a rotating groove (27), and the top end of the hinge plate (26) passes through the rotating groove (27) and is connected to the backrest rod (21).

6. A chair with a footrest according to claim 5, characterized in that: The hinge plate (26) is in the shape of an arc, and the hinge plate (26) can abut against the seat frame (23).

7. The chair with a footrest according to claim 5, characterized in that: The support rod (4) is provided with a mounting portion (28); an adjusting cylinder (29) and a control switch (30) for operating the adjusting cylinder (29) are provided below the seat frame (23); a cylinder rod (31) is provided at one end of the adjusting cylinder (29); one end of the cylinder rod (31) is connected to the mounting portion (28); a mounting plate (32) is symmetrically provided at the middle of the linkage rod (25); a connecting portion (33) is provided at the other end of the adjusting cylinder (29); the connecting portion (33) is arranged between the symmetrical mounting plates (32) and is rotatably connected to the mounting plates (32).

8. A chair with a footrest according to any one of claims 1 to 4, characterized in that: A headrest (34) is provided at the top of the chair back (2), a first fixing plate (35) and a second fixing plate (51) are provided at the rear side of the chair back (2), a rotation space (36) is formed between the first fixing plate (35) and the second fixing plate (51), a connecting rod (37) is provided on the headrest (34), the connecting rod (37) is arranged in the rotation space (36) and is rotatably connected to the fixing plate, and the headrest (34) can rotate relative to the chair back (2).

9. A chair with a footrest according to claim 8, characterized in that: The first fixing plate (35) and the second fixing plate (51) are both provided with a rotating hole (38), the connecting rod (37) is provided with a connecting hole (39), the connecting hole (39) and the rotating hole (38) are provided with a hinge rod (40), the connecting rod (37) is provided with a control component for controlling the rotation of the connecting rod (37), the control component comprises a limit rod (42) and a control member (41), the first fixing plate (35) and the second fixing plate (51) are respectively provided with a first rotating groove (43) and a second rotating groove (44), the connecting rod (37) is provided with a through hole (45) penetrating the connecting rod (37), one end of the limit rod (42) passes through the through hole (45) and is arranged in the second rotating groove (44), the inner end of the control member (41) is provided with a moving groove (46), the other end of the connecting rod (37) is arranged in the moving groove (4 6), the control member (41) can move left and right relative to the connecting rod (37), and a baffle (52) is fixedly provided on the control member (41), and the baffle (52) can abut against the inner wall of the connecting rod (37). The outer end of the control member (41) passes through the through hole (45) and the first rotating channel (43) and is arranged outside the first fixed plate (35). The first rotating channel (43) is provided with a clamping groove (47). A clamping portion (49) is extended and formed on the control member (41), and the clamping portion (49) is arranged in the clamping groove (47) and is clamped with the first fixed plate (35). At this time, the connecting rod (37) cannot rotate relative to the second fixed plate (51). Pressing the outer end of the control member (41) can release the clamping state between the clamping portion (49) and the first fixed plate (35), and at this time, the connecting rod (37) can rotate relative to the second fixed plate (51).

10. A chair with a footrest according to claim 9, characterized in that: The control assembly comprises a return spring (48), the return spring (48) is sleeved on the limit rod (42), and the two ends of the return spring (48) are respectively in contact with the inner side of the second fixing plate (51) and the inner end of the control member (41).

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