CN210276524U

CN210276524U - Seat locking control mechanism, seat locking control device and seat

Info

Publication number: CN210276524U
Application number: CN201921106403.9U
Authority: CN
Inventors: 王大秋; 周骏
Original assignee: Zhejiang Motostuhl Furniture Technology Co ltd
Current assignee: Zhejiang Motostuhl Furniture Technology Co ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-04-10
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a seat locking control mechanism, a seat locking control device and a seat, which comprises a hoop and a wrench, wherein the hoop comprises a hoop body and two foot pieces, the middle of the hoop body is provided with a shaft hole, and the wrench is arranged outside the foot pieces and is configured to adjust the size of the shaft hole through rotation; the anchor ear fixing device comprises an anchor ear body and is characterized by further comprising an anchor ear linkage mechanism, wherein the anchor ear linkage mechanism comprises a spring pin and a pull rod, the pull rod is provided with an inclined surface to enable the pull rod to generate thickness change, an avoidance hole is formed in the position of the inclined surface, one end of the spring pin penetrates through a through hole preset in the periphery of the anchor ear body, and the other end of the spring pin penetrates through the avoidance hole and is in clamping fit with the pull rod; the pull rod responds to the rotation of the wrench, and the clamping position of the spring pin and the pull rod is located at different positions of the inclined surface, so that the spring pin is controlled to be inserted into the shaft hole from the through hole or retracted into the through hole from the shaft hole. The operation is very convenient, and the height position of the bearing part can be adjusted by pulling the wrench in one step, so that the bearing part is suitable for children of different ages.

Description

Seat locking control mechanism, seat locking control device and seat

Technical Field

The utility model relates to a seat locking control mechanism, seat locking controlling means and seat.

Background

The seat is one of seats, is widely used in work and life of people, is generally accepted and loved by people, and is one of essential furniture in modern office and household environments; the traditional chair back is generally fixed, namely the installation height and the installation position of the traditional chair back are fixedly assembled or reserved when the chair leaves a factory, and the installation height and the installation position can not be changed in the later stage of a user.

Because different users have different sizes, for example, users with higher sizes may want to increase the position of the chair back or the chair seat to obtain a more comfortable sitting experience; while a user of a lower stature may want to lower the position of the back or seat to a position suitable for his sitting; in particular, the user is a child, and since the size of the child is changed during the growth process, a chair capable of adjusting the chair back or the chair seat is required to meet the requirements of all ages.

Therefore, earlier fixed can not satisfy, and the lift adjustment mechanism among the prior art generally is rotation type staple bolt formula structure, when adjusting from top to bottom at seat support or the back of the chair, needs to rotate many rings of unblocks, also needs to rotate many times during the locking, and it is more time-consuming, more loaded down with trivial details, user experience is relatively poor.

The locking control mechanism of the chair seat or the chair back is specially designed, the chair back or the chair seat of the chair can be adjusted in a lifting mode, unlocking or locking is convenient, and the problem to be solved is that the locking control mechanism is easy to operate.

Disclosure of Invention

The utility model overcomes exist not enough among the above-mentioned prior art, provide a seat locking control mechanism, solved above-mentioned problem, through setting up bolt link gear for drive the pull rod when the spanner pivoted and remove, and the inclined plane design of pull rod side makes the one end of spring catch insert or pop out the axle and downthehole or outside, thereby realizes the locking or the unblock of the seat back of the chair or seat support, compares prior art and operates comparatively conveniently, succinctly.

The technical scheme of the utility model is realized like this:

a seat locking control mechanism comprises a hoop and a wrench connected to the hoop, wherein the hoop comprises an annular hoop body and two foot pieces arranged at a notch on the periphery of the hoop body, a shaft hole for inserting a seat upright column is formed in the middle of the hoop body, and the wrench is arranged on the outer side of one of the foot pieces and is configured to rotate to adjust the size of the shaft hole; the anchor ear fixing device is characterized by further comprising an anchor ear linkage mechanism, wherein the anchor ear linkage mechanism comprises a spring pin and a pull rod, an inclined plane is arranged on the pull rod to enable the portion of the pull rod at the position of the inclined plane to generate thickness change, an avoidance hole is formed at the position of the inclined plane, one end of the spring pin penetrates through a through hole preset in the periphery of the anchor ear body, and the other end of the spring pin penetrates through the avoidance hole and is in clamping fit with the pull rod; the pull rod moves along the length direction of the pull rod in response to the rotation of the wrench, and the clamping positions of the spring pin and the pull rod are located at different positions of the inclined surface, so that the spring pin is controlled to be inserted into the shaft hole from the through hole or retracted into the through hole from the shaft hole.

The utility model discloses set up bolt link gear, through linking to each other pull rod and spanner, make the spanner rotate and can drive the pull rod and move, and set up the inclined plane on the pull rod side and make the pull rod produce the change in the regional section thickness of inclined plane, the other end of spring catch passes and dodges the hole and cooperates with inclined plane joint, the setting of dodging the hole on the pull rod makes the pull rod can move along self length direction, and the spring catch can only move along self length direction, spring catch and pull rod can be mutually perpendicular setting, so when the pull rod moves to one direction, spring catch tip joint is located the pull rod thicker position, the spring catch is forced to move outward and retract in the through-hole, and the spring catch has produced elasticity this moment; when the pull rod moves in the opposite direction, the clamping part at the end part of the spring pin is positioned at the thinner position of the pull rod, and the elastic force is released, so that the spring pin penetrates through the through hole and is inserted into the shaft hole.

Preferably, a driving end and a control end are respectively formed at two ends of the pull rod along the length direction of the pull rod, the control end is rotatably connected with the wrench, and the inclined surface and the avoidance hole are arranged on the driving end; the spring pin comprises a plug pin and a spring for driving the plug pin to reset, and an insertion end and an exposed end are respectively formed at two ends of the plug pin along the length direction of the plug pin; the inserting end of the bolt penetrates through the through hole in the periphery of the hoop body, and the exposed end of the bolt penetrates through the avoiding hole and then is connected with the limiting pin to realize clamping. The limit pin is matched with the stop of the inclined plane and is clamped at different positions of the inclined plane according to the movement of the pull rod, so that the forward and backward extension of the bolt is realized; when the limit pin is at the thicker position of the pull rod, the bolt moves outwards and deforms the spring to generate reset elastic force, and when the limit pin is at the thinner position of the pull rod, the reset elastic force plays a role in driving the bolt to be inserted into the shaft hole.

Preferably, a support is fixedly arranged on the periphery of the hoop body, an exposed end of the bolt sequentially penetrates through the support and the avoiding hole and then is connected with a limiting pin, the spring is sleeved on the bolt, a blocking ring is fixedly arranged on the bolt, the spring and the blocking ring are both arranged between the support and the periphery of the hoop body, and two ends of the spring respectively abut against the blocking ring and the support. After the bolt is clamped with the pull rod through the limiting pin, the bolt compresses the spring through the retaining ring when moving outwards under the action of the movement and the inclined surface of the pull rod, so that the spring generates elasticity; when the pull rod moves reversely, the spring is released to exert the elastic force to drive the bolt to rebound.

Preferably, the support comprises a baffle and positioning columns positioned at two ends of the baffle, one end of each positioning column is fixedly connected with the periphery of the hoop body, and the other end of each positioning column is detachably connected with the baffle; the baffle ring and the spring are positioned between the baffle plate and the periphery of the hoop body, and the bolt is arranged on the baffle plate in a penetrating way. The positioning column is arranged to keep a certain interval between the baffle and the periphery of the hoop body, so that the baffle ring has a certain moving space; furthermore, the positioning column is detachably connected with the baffle, so that the bolt retaining ring can be conveniently placed between the baffle and the hoop body.

Preferably, the staple bolt body is made for the metal, and the one end and the staple bolt body periphery welded fastening of reference column.

Preferably, the other end of the positioning column is detachably connected with the baffle, and the reference point is that: the other end of the positioning column is provided with a screw hole, and the two ends of the baffle are in threaded connection with the positioning column through screws. The threaded connection is convenient to disassemble and assemble.

Preferably, the two leg pieces at the periphery of the hoop body are provided with pulling pieces in a penetrating manner, the wrench is provided with a cam, the cam is positioned on the outer side of one of the leg pieces, the cam is rotatably connected with one end of the pulling piece, and the other end of the pulling piece is abutted against the other leg piece. When the spanner rotates in one direction, the cam is pressed against the foot plates, the two foot plates are clamped tightly, and the shaft hole becomes small; when the spanner rotates to the other direction, the cam does not extrude the foot pieces any more, the two foot pieces are loosened, and the shaft hole is enlarged.

Preferably, the pulling part is U-shaped and comprises a transverse plate and side plates positioned at two ends of the transverse plate, the side plates are arranged in through holes formed in the two leg pieces in a penetrating manner, one end of each side plate is exposed out of the outer side of one leg piece, the cam is rotatably connected with one end of each side plate, and the transverse plate abuts against the other leg piece. The transverse plate has a limiting effect on one of the foot pieces, and the cam rotates under the action of the wrench and simultaneously extrudes the foot pieces, so that the distance between the two foot pieces is reduced.

A seat locking control device comprises an upright post and the seat locking control mechanism, wherein the upright post penetrates through a shaft hole of a hoop body, and a plurality of positioning holes matched with spring pins are formed in the upright post at intervals. The utility model further provides a seat locking control device, a plurality of positioning holes are arranged on the upright post, and when the wrench rotates towards one direction to hold the hoop tightly, the spring pin is inserted into the positioning holes to realize locking; when the wrench rotates in the opposite direction, the hoop is loosened, and the spring pin is separated from the positioning hole; the position of the hoop on the upright post can be adjusted; the operation is more convenient, and the unlocking or locking can be realized by pulling the wrench in one step.

A seat comprises a base, a bearing piece and the seat locking control device, wherein the lower end of a stand column is connected to the base, and the bearing piece is connected with a hoop body. The utility model discloses and then provide a seat, especially as children learn to use the chair, through the position of adjustment staple bolt body on the stand, adjust the height position that holds the carrier promptly simultaneously, adapt to different ages children's user demand.

Preferably, the hoop body is welded with a support base on the periphery, and the support base is connected with the bearing piece. The support is connected with the bearing part, so that the bearing part is more convenient to configure.

Preferably, the bearing part is a chair seat or a chair back. By the above mode, the height of the chair seat or the chair back can be adjusted, and the chair is very convenient.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

The utility model further provides a seat locking control device, a plurality of positioning holes are arranged on the upright post, and when the wrench rotates towards one direction to hold the hoop tightly, the spring pin is inserted into the positioning holes to realize locking; when the wrench rotates in the opposite direction, the hoop is loosened, and the spring pin is separated from the positioning hole; the position of the hoop on the upright post can be adjusted; the operation is more convenient, and the unlocking or locking can be realized by pulling the wrench in one step.

The utility model discloses and then provide a seat, especially as children learn to use the chair, through the position of adjustment staple bolt body on the stand, adjust the height position that holds the carrier promptly simultaneously, adapt to different ages children's user demand.

Drawings

Fig. 1 is an exploded perspective view of a seat according to the present embodiment of the present invention;

fig. 2 is a schematic perspective view of the stand column and the base of the present invention when combined;

fig. 3 is a schematic view of the three-dimensional structure of the hoop, the supporting seat and the supporting member of the present embodiment after combination;

fig. 4 is a schematic perspective view of the pulling element, the plug pin and the baffle in the embodiment of the present invention;

fig. 5 is a schematic perspective view of the embodiment of the present invention after the wrench and the pull rod are disassembled;

FIG. 6 is a schematic perspective view of the wrench and the pull rod of the present invention;

fig. 7 is a cross-sectional view of the spring pin inserted into the positioning hole, i.e., the seat in the locked state according to the embodiment of the present invention;

fig. 8 is a cross-sectional view of the spring pin of the present invention in an embodiment thereof disengaged from the positioning hole, i.e., the seat is in an unlocked state;

fig. 9 is an enlarged schematic view of the three-dimensional structure of the hoop and the plug pin linkage mechanism combined in the embodiment of the present invention;

fig. 10 is a side view of a seat in an embodiment of the invention.

The figures are numbered: a hoop 1; a wrench 2; a cam 3; the hoop body 4; a leg piece 5; a, a foot piece 5 a; b, a foot piece 5B; a pulling member 6; a transverse plate 7; a side plate 8; a first end 8 a; a perforation 9; a shaft hole 10; a spring pin 11; a pull rod 12; a drive end 13; a control terminal 14; an inclined surface 15; a through hole 16; a latch 17; a spring 18; an insertion end 19; an exposed end 20; a relief hole 21; a stopper pin 22; a bracket 23; a baffle plate 24; positioning posts 25; a retainer ring 26; a screw hole 27; a through hole 27 a; b through hole 27B; a latch 27 c; c-via 27 d; pin holes 27 e; d via 27 f; e-via 27 g; f, inserting a pin 27 h; g pin holes 27 i; a screw 28; a column 29; a positioning hole 30; a base 31; a support base 32; a carrier 33.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific implementation manner of the utility model is as follows:

example (b): as shown in fig. 1-9, the present invention provides a seat locking control mechanism, which comprises a hoop 1 and a wrench 2 connected to the hoop 1 and having a cam 3, wherein the hoop 1 comprises a hoop body 4 made of a metal material and two leg pieces 5 disposed at a gap on the periphery of the hoop body 4, the wrench 2 is disposed at the outer side of the a leg piece 5a, U-shaped pulling pieces 6 are disposed on the two leg pieces 5, each pulling piece 6 comprises a transverse plate 7 and side plates 8 disposed at two ends of the transverse plate 7, the side plates 8 are disposed in through holes 9 formed in the two leg pieces 5, a first end 8a of each side plate 8 is exposed outside the a leg piece 5a, a through hole 27a is disposed at each first end 8a of each side plate 8, a B through hole 27B matched with the a through hole 27a is correspondingly disposed on the cam 3, and an a bolt 27c passes through the A, B through holes 27a, 27B to realize the rotational connection between the cam 3 and the first end 8a of the side plate 8, the transverse plate 7 is abutted against the foot piece B5B, and the transverse plate 7 plays a role in limiting the foot piece B5B; the middle of the hoop body 4 is provided with a shaft hole 10 for inserting a seat upright post 29, and the wrench 2 can adjust the size of the shaft hole 10 by rotating;

the method specifically comprises the following steps: as shown in fig. 7, when the wrench 2 rotates in the direction indicated by the arrow B in the figure, the cam 3 presses the leg piece 5 while rotating under the action of the wrench 2, so that the leg piece a 5a and the leg piece B5B are clamped, the distance between the two is reduced, and the shaft hole 10 is reduced; as shown in fig. 8, when the wrench 2 is rotated in the direction indicated by the arrow a in the figure, the cam 3 does not press the leg pieces 5 any more, the both leg pieces 5 are loosened, the distance between the both leg pieces is increased, and the shaft hole 10 is also increased.

As shown in fig. 1, 4, 5-8, the seat locking control mechanism of the present invention further comprises a plug pin linkage mechanism, the plug pin linkage mechanism comprises a spring pin 11 and a pull rod 12, the two ends of the pull rod 12 along the length direction thereof respectively form a driving end 13 and a control end 14 rotatably connected with the wrench 2, the control end 14 is provided with an E-through hole 27g, the wrench 2 is provided with two D through holes 27F, the F-shaped bolt 27h passes through the D through holes 27F and the E through holes 27g, so that the control end 14 can move the pull rod 12 in its own length direction in response to the rotation of the wrench 2, an inclined surface 15 is provided on the drive end 13, which, when the pull rod 12 is displaced, can cause a thickness change in the portion of the pull rod 12 at the location of the inclined surface 15, thereby controlling the spring pin 11 to be inserted into the shaft hole 10 from a through hole 16 preset on the outer circumference of the hoop body 4 or to be retracted into the through hole 16 from the shaft hole 10.

Specifically, the method comprises the following steps: when the pull rod 12 moves towards the direction indicated by the arrow A in the figure, the end of the spring pin 11 is clamped at the thicker position of the pull rod 12, the spring pin 11 is forced to move outwards and retract into the through hole 16, and the spring pin 11 generates elastic force; when the pull rod 12 is moved in the opposite direction, i.e. in the direction indicated by arrow B in the figure, the end of the spring pin 11 is again in the thinner position of the pull rod 12, and the spring force is released, so that the spring pin 11 is inserted into the shaft hole 10 through the through hole 16.

Further, as shown in fig. 1, 4, 7 and 8, the spring pin 11 includes a plug 17 and a spring 18 for driving the plug 17 to return, the spring 18 is sleeved on the plug 17, two ends of the plug 17 along the length direction thereof respectively form an insertion end 19 and an exposed end 20, and the exposed end 20 is provided with a G pin hole 27i for the limiting pin 22 to pass through; an insertion end 19 of the bolt 17 penetrates through the through hole 16, and an exposed end 20 of the bolt 17 penetrates through an avoidance hole 21 formed in the inclined surface 15 and then is connected with a limiting pin 22.

Furthermore, the limit pin 22 is matched with the inclined surface 15 in a stopping way, and the limit pin 22 is clamped at different positions of the inclined surface 15 according to the movement of the pull rod 12, so that the bolt 17 can extend and retract; when the limit pin 22 is located at the thicker position of the pull rod 12, the bolt 17 moves outwards and deforms the spring 18 to generate a reset elastic force, and when the limit pin 22 is located at the thinner position of the pull rod 12, the reset elastic force plays a role in driving the bolt 17 to be inserted into the shaft hole 10.

In addition, as shown in fig. 1, 3, and 7-9, a support 23 is fixedly disposed on the periphery of the hoop body 4, the support 23 includes a baffle 24 and positioning posts 25 detachably connected to two ends of the baffle 24, one end of each positioning post 25 is welded and fixed to the periphery of the hoop body 4, and the other end of each positioning post 25 is detachably connected to the baffle 24; the middle part of the baffle plate 24 is provided with a pin hole 27e for the bolt 17 to pass through; the exposed end 20 of the bolt 17 sequentially passes through the spring 18, the pin hole 27e and the avoidance hole 21 and then is connected with the limit pin 22, the bolt 17 is fixedly provided with a baffle ring 26, the spring 18 and the baffle ring 26 are both positioned between the baffle plate 24 and the periphery of the hoop body 4, and two ends of the spring 18 are respectively abutted against the baffle ring 26 and the baffle plate 24.

The other end of the positioning column 25 is detachably connected with the baffle 24, which specifically means that: threaded screw 27 is seted up to the reference column 25 other end, corresponds on the baffle 24 and sets up two C through-holes 27d that supply screw 28 to pass, and baffle 24 both ends are connected with reference column 25 through screw 28, easy dismounting.

Specifically, the method comprises the following steps: after the bolt 17 is clamped with the pull rod 12 through the limit pin 22, under the action of the movement of the pull rod 12 and the inclined surface 15, the spring 18 is compressed through the stop ring 26 when the bolt 17 moves outwards, so that the spring 18 generates elasticity; when the pull rod 12 moves in the reverse direction, the spring 18 is released to exert the elastic force to drive the latch 17 to rebound.

As shown in fig. 1, 2, and 7-9, the present embodiment further provides a seat locking control device, which includes a column 29 inserted into the shaft hole 10 of the hoop body 4 and the seat locking control mechanism, wherein a plurality of positioning holes 30 matched with the spring pins 11 are arranged at intervals on the column 29, and the wrench 2 rotates in one direction to tightly hold the hoop 1, and the spring pins 11 are inserted into the positioning holes 30 to achieve locking; when the wrench 2 rotates in the opposite direction, the hoop 1 is loosened, and the spring pin 11 is separated from the positioning hole 30; the position of the hoop 1 on the upright post 29 can be adjusted; the operation is more convenient, and the unlocking or locking of the upright post 29 can be realized by pulling the wrench 2 in one step.

As shown in fig. 10, the present embodiment further provides a chair, especially a chair for children learning, comprising a base 31, a supporting seat 32 welded to the periphery of the hoop body 4, a bearing member 33 connected to the supporting seat 32, and the above-mentioned chair locking control device, wherein the bearing member 33 can be a chair seat or a chair back; the lower extreme of stand 29 connect on base 31, through the position of adjustment staple bolt body 4 on stand 29, adjust the height position of seat support or back of the chair, adapt to different ages children's user demand.

Claims

1. A seat locking control mechanism comprises a hoop and a wrench connected to the hoop, wherein the hoop comprises an annular hoop body and two foot pieces arranged at a notch on the periphery of the hoop body, a shaft hole for inserting a seat upright column is formed in the middle of the hoop body, and the wrench is arranged on the outer side of one of the foot pieces and is configured to rotate to adjust the size of the shaft hole; the method is characterized in that: the anchor ear fixing device is characterized by further comprising an anchor ear linkage mechanism, wherein the anchor ear linkage mechanism comprises a spring pin and a pull rod, an inclined plane is arranged on the pull rod to enable the portion of the pull rod at the position of the inclined plane to generate thickness change, an avoidance hole is formed at the position of the inclined plane, one end of the spring pin penetrates through a through hole preset in the periphery of the anchor ear body, and the other end of the spring pin penetrates through the avoidance hole and is in clamping fit with the pull rod; the pull rod moves along the length direction of the pull rod in response to the rotation of the wrench, and the clamping positions of the spring pin and the pull rod are located at different positions of the inclined surface, so that the spring pin is controlled to be inserted into the shaft hole from the through hole or retracted into the through hole from the shaft hole.

2. The seat lock control mechanism according to claim 1, characterized in that: the two ends of the pull rod along the length direction of the pull rod form a driving end and a control end respectively, the control end is rotatably connected with the wrench, and the inclined surface and the avoidance hole are arranged on the driving end; the spring pin comprises a plug pin and a spring for driving the plug pin to reset, and an insertion end and an exposed end are respectively formed at two ends of the plug pin along the length direction of the plug pin; the inserting end of the bolt penetrates through the through hole in the periphery of the hoop body, and the exposed end of the bolt penetrates through the avoiding hole and then is connected with the limiting pin to realize clamping.

3. The seat lock control mechanism according to claim 2, characterized in that: the support is fixedly arranged on the periphery of the hoop body, the exposed end of the bolt sequentially penetrates through the support and the avoiding hole to be connected with the limiting pin, the spring is sleeved on the bolt, the baffle ring is fixedly arranged on the bolt, the spring and the baffle ring are both positioned between the support and the periphery of the hoop body, and two ends of the spring respectively abut against the baffle ring and the support.

4. The seat lock control mechanism according to claim 3, characterized in that: the bracket comprises a baffle and positioning columns positioned at two ends of the baffle, one end of each positioning column is fixedly connected with the periphery of the hoop body, and the other end of each positioning column is detachably connected with the baffle; the baffle ring and the spring are positioned between the baffle plate and the periphery of the hoop body, and the bolt is arranged on the baffle plate in a penetrating way.

5. The seat lock control mechanism according to claim 4, wherein: the staple bolt body is made for the metal, and the one end and the staple bolt body periphery welded fastening of reference column.

6. The seat lock control mechanism according to claim 4, wherein: the reference column other end indicates for dismantling the connection with the baffle: the other end of the positioning column is provided with a screw hole, and the two ends of the baffle are in threaded connection with the positioning column through screws.

7. The seat lock control mechanism according to claim 1, characterized in that: the hoop body is provided with two foot pieces at the periphery, a pulling piece penetrates through the two foot pieces, the wrench is provided with a cam, the cam is positioned on the outer side of one of the foot pieces, the cam is rotatably connected with one end of the pulling piece, and the other end of the pulling piece is abutted against the other foot piece.

8. The seat lock control mechanism according to claim 7, wherein: the pulling piece is U-shaped and comprises a transverse plate and side plates positioned at two ends of the transverse plate, the side plates penetrate through holes formed in the two foot plates, one end of each side plate is exposed out of one of the foot plates, the cam is rotatably connected with one end of each side plate, and the transverse plate abuts against the other foot plate.

9. A seat lock control device characterized in that: the seat locking control mechanism comprises an upright post and the seat locking control mechanism as claimed in any one of claims 1 to 8, wherein the upright post is penetrated in a shaft hole of the hoop body, and a plurality of positioning holes matched with the spring pins are arranged on the upright post at intervals.

10. A seat, characterized by: the seat locking control device comprises a base, a bearing piece and the seat locking control device as claimed in claim 9, wherein the lower end of the upright post is connected to the base, and the bearing piece is connected with the hoop body.

11. The seat according to claim 10, wherein: the periphery of the hoop body is welded with a supporting seat, and the supporting seat is connected with the bearing piece.

12. The seat according to claim 10 or 11, wherein: the bearing piece is a chair seat or a chair back.