CN217907522U - Rotary positioning adjusting seat of chair - Google Patents

Abstract

The utility model discloses a rotary positioning adjusting seat of chair, including roating seat and unable adjustment base, unable adjustment base upper surface middle part is fixed with the fixed column, be provided with a plurality of gear holes along fixed column ring week, the roating seat reverse side has seted up the post hole, the fixed column just is fit for the post hole, the fixed column inserts in the post hole, the roating seat can control the rotation relative to unable adjustment base through the cooperation of fixed column, post hole, the lateral wall of roating seat is connected with elastic locking device, elastic locking device is used for locking and unblock roating seat with gear hole cooperation, elastic locking device falls into different gear holes and locks the orientation angle of chair, elastic locking device falls into the gear hole and can not rotate for locking the roating seat, elastic locking device withdraws from the gear hole and can rotate for unblock the roating seat; the product has a simple structure, is free from manual locking, does not worry about locking in place or forgetting to lock, and improves the safety of old, weak, sick and disabled users.

Description

Rotary positioning adjusting seat of chair

Technical Field

The utility model relates to a bathing chair technical field specifically is a rotational positioning of chair adjusts seat.

Background

The bath chair is an important tool for facilitating the bath of the old with degenerated bones and muscles and weak limbs or the patients with inconvenient standing such as weak body, disabled lower limbs and the like. The existing bath chair mainly plays a supporting role, the structure is fixed, most of the bath chair is provided with a backrest, handrails and the like for better supporting users, bath products and a shower head are arranged in different directions usually, the bath process needs to turn to the position of taking the bath products, the user needs to get up or move the whole bath chair, the use difficulty is increased undoubtedly for weak users, the falling condition is easy to occur, and the rotation and locking of a seat frame are realized through the arrangement of the turnplate in part of the bath chair.

For example, 1: patent document publication no: CN211155469U, discloses a rotary bath chair; the locking mechanism 7 comprises a locking bolt 71, a spring 72 and a fixing frame 73, wherein the fixing frame 73 is fixedly arranged on one side of the seat frame 2 and can synchronously rotate with the seat board 1. The fixing bracket 73 includes a first fixing piece 731 and a second fixing piece 732 which are spaced apart from each other, guide holes through which the locking bolts 71 are inserted are formed in the first fixing piece 731 and the second fixing piece 732, and the locking bolts 71 are inserted through the first fixing piece 731 and the second fixing piece 732 and can horizontally move.

A limiting ring 711 is fixedly arranged in the middle of the locking bolt 71, one end of the locking bolt 71 faces the outer ring 61, and the other end is provided with a handle 712. The spring 72 is sleeved on the locking bolt 71, one end of the spring 72 abuts against the first fixing piece 731, the other end of the spring 72 abuts against the limiting ring 711, the limiting ring 711 abuts against the second fixing piece 732 under the thrust of the spring 72, and the locking bolt 71 is kept in a state of elastically extending towards the outer ring 61 and abutting against the outer edge of the outer ring 61 under the action of the spring 72.

The edge of the outer ring 61 is provided with four locking grooves 611 with equal intervals, the locking bolt 71 can fall into the locking groove 611 to be locked along with the rotation of the seat plate 1, and the end part of the locking bolt 71 can be separated from the locking groove 611 to be unlocked by pulling outwards.

The number of the backrest tubes 4 is two, the backrest tube interface 22 is arranged on the rear side of the seat frame 2, the lower end of each backrest tube 4 is detachably connected with the backrest tube interface 22, and the upper end of each backrest tube is connected with a backrest plate 41. The two sides of the seat frame 2 are provided with handrail tube interfaces 23, and the two ends of the handrail tube 5 are detachably connected with the handrail tube interfaces 23. Specifically, the lower extreme of back pipe 4 and the both ends of handrail pipe 5 are equipped with the marble, be equipped with the aperture that corresponds with the marble on back pipe interface 22 and the handrail pipe interface 23, back pipe 4 and handrail pipe 5 carry out the detachable connection through marble and aperture cooperation. The detachable arrangement is convenient for packaging and transportation, and the detachable use can be realized according to the requirements;

when the shower seat is used, the initial position of the locking bolt 71 is that the end part falls into one locking groove 611, when the shower seat needs to be rotated, the end part of the locking bolt 71 is separated from the locking groove 611 only by pulling the locking bolt 71 outwards, the seat plate 1 is slightly twisted by a body to rotate, the locking bolt 71 is staggered from the locking groove 611 and then released, and the locking bolt 71 moves along the outer edge of the outer ring 61 along with the rotation of the seat plate 1 until the locking bolt falls into the next locking groove 611. The four locking grooves 611 are arranged at equal intervals and can rotate and orient for 90 degrees each time, so that the basic four-direction rotation requirements are met.

The locking mechanism 7 has the advantages of multiple components, complex structure, more structural materials, high production cost, heavy overall chair, transverse plugging and unplugging arrangement and inconvenient operation.

For example, 2: patent document publication no: CN 212591841U discloses a multifunctional shower chair, wherein an adjusting handle 63 is mounted on the sleeve 61, and is used for switching the sleeve 61 to be in a slidable state or a fixed state. Specifically, when it is desired to move the sleeve 61 left or right, the adjustment knob 63 is loosened so that the sleeve 61 can slide along the slide tube 13, and when moved into position, the adjustment knob 63 is tightened again so that the sleeve 61 cannot slide. The adjusting handle 63 can be a star-shaped handle, a ring-shaped handle or a T-shaped handle; the elasticity of rotatory seat support is adjusted through screw thread screwing mode to the aforesaid, and sometimes some old, weak, incomplete patient's wrong not so tight or forgotten to screw up and connect, lead to the fixed direction of chair not stable enough, or skid, unable automatic locking, be unfavorable for old person or patient's rotation locking and open the regulation, locking process is more loaded down with trivial details moreover, and it is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rationally, through elastic lock device and keep off position hole cooperation locking and unblock roating seat, directly set up elastic lock device at the roating seat to reduce the complexity of structure, exempt from the artifical condition of confirming whether locking, elastic lock device plays the automatic locking effect, increases the security of using to lock automatically, its locking is stable, easy operation's rotational positioning adjusts the seat, with the problem of proposing in solving above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: a rotary positioning adjusting seat of a chair comprises a rotary seat and a fixed base, wherein a fixed column is fixed in the middle of the upper surface of the fixed base, and a plurality of stop holes are formed in the periphery of the fixed column;

the rotary seat is provided with a column hole on the reverse side, the fixed column is just suitable for the column hole, the fixed column is inserted into the column hole, and the rotary seat can rotate left and right relative to the fixed base through the matching of the fixed column and the column hole;

the lateral wall of roating seat is connected with elastic lock device, and elastic lock device is used for locking and unblock roating seat with keeping off position hole cooperation, and elastic lock device falls into the fender position hole of difference and locks the orientation angle of chair, and elastic lock device falls into the fender position hole and can not rotate for locking the roating seat, and elastic lock device withdraws from and keeps off the position hole and can rotate for unblock roating seat.

Furthermore, the elastic lock device comprises a lever, a bolt seat and a supporting block, wherein the bolt seat and the supporting block are integrally connected to the rotating seat, and the top end of the supporting block is pressed against the reverse side of the front section of the lever;

the pin seat is provided with a vertically penetrating pin hole, an elastic lock pin penetrates through the pin hole, and the top of the elastic lock pin is hinged with the front end of the lever; in a normal state, the elastic lock pin falls into the gear hole through the rebound force to lock the rotating seat; the tail of the lever is pressed down, so that the front end of the lever tilts up to pull the elastic lock pin to retract into the pin hole so as to unlock the withdrawing gear hole.

Further, the pin hole comprises an upper small hole section and a lower large hole section, and a jacking step is formed between the upper small hole section and the lower large hole section;

the elastic lock pin comprises a small-diameter pin section and a large-diameter pin section, and a surrounding step is formed between the small-diameter pin section and the large-diameter pin section;

the small-diameter pin section is connected with a spring in a penetrating manner, the diameter of the spring and the diameter of the large-diameter pin section are larger than that of the upper small hole section, after the elastic lock pin is inserted into the pin hole, the small-diameter pin section upwards penetrates through the upper small hole section and extends out of the outer top, and the top of the small-diameter pin section is hinged with the front end of the lever; the top end of the spring is propped against the upper end and the lower end of the propping step and is propped against the surrounding step, and the spring is arranged above the inner part of the lower big hole section; the large-diameter pin section is connected with the lower large-hole section in a penetrating manner;

under a normal state, the large-diameter pin section falls into the locking rotary seat in the gear hole through the rebound force of the spring; the tail of the lever is pressed down, so that the front end of the lever tilts up to pull the small-diameter pin section to rise, and the large-diameter pin section retracts into the lower large hole section to unlock the gear hole.

Furthermore, a positioning surrounding anti-falling groove is arranged on the middle section of the fixing column; the lateral wall of the rotating seat is transversely provided with a through screw hole, the screw hole is screwed with a screw rod, and one end of the screw rod is screwed and penetrates through the screw hole to be inserted into the positioning surrounding anti-falling groove.

Furthermore, a bearing step is arranged at the orifice of the column hole, and a bearing is embedded and fixed at the bearing step; the fixed column penetrates through the bearing and is inserted into the column hole, and the rotating seat can rotate left and right relative to the fixed base through the matching of the fixed column, the bearing and the column hole.

Further, the top of the rotating seat is fixedly connected with a seat frame; the bottom of the fixed base is fixedly connected with a chair leg frame.

Furthermore, a seat plate and a backrest plate can be arranged on the seat frame.

Furthermore, the bottom of the chair foot rest is fixedly connected with an anti-skid foot pad.

Furthermore, a plurality of gear holes which are uniformly distributed on the periphery are formed on the surface of the fixed base on the periphery of the fixed column.

Further, the number of the gear holes is four to ten.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the product is mainly characterized in that the elastic lock device is arranged on the rotary seat, the elastic lock device is matched with the plurality of gear holes, manual unlocking is realized, automatic locking can be realized without manual operation, the structure is simple, manual locking is avoided, people who are old, weak, sick and disabled cannot forget to lock the lock, the safety of the people is improved, and the operation is convenient; the complexity of the structure is reduced, the cost is reduced, and the weight is reduced; 2. this product is installed in the chair back, and elastic lock device is used for locking and unblock roating seat with keeping off position hole cooperation, and elastic lock device falls into the fender position hole of difference and locks the orientation angle of chair, and elastic lock device falls into and keeps off the position hole and can not rotate for locking roating seat, and elastic lock device withdraws from and keeps off the position hole and can rotate for unblock roating seat, the required chair orientation of direction locking. 3. The rotary seat in the rotary positioning adjusting seat of the chair can rotate left and right relative to the fixed base through the matching of the fixed column and the column hole, so that the seat frame can rotate very smoothly relative to the chair foot rest.

Drawings

Fig. 1 is a schematic structural view of the elastic lock device of the present invention in a locking state with the gear holes;

fig. 2 is a schematic structural view of the elastic lock device of the present invention for unlocking the catch hole and adjusting the rotation state;

fig. 3 is a schematic view of the connection state between the rotary seat and the fixed base according to the present invention.

FIG. 4 is a schematic view illustrating a state where the rotary seat and the fixed base of the present invention are disassembled;

FIG. 5 is a schematic view of the overall structure of the connection of the rotary positioning adjusting seat, the seat frame and the chair leg frame of the present invention;

fig. 6 is a schematic view of the bottom structure of the rotary base of the present invention;

FIG. 7 is a schematic view of the hole and groove distribution inside the rotary base according to the present invention;

fig. 8 is a schematic view of the structure of the elastic lock pin of the present invention.

In the reference symbols: 1. a seat frame; 2. a chair leg frame; 3. a rotating base; 31. a post hole; 32. a screw hole; 33. A bearing step; 4. a fixed base; 5. fixing a column; 6. an elastic lock device; 7. a lever; 8. an elastic lock pin; 801. a small diameter pin section; 802. surrounding the step; 803. a large diameter pin section; 8A, pin holes; 8A1, an upper small hole section; 8A2, pressing the step; 8A3, a lower large hole section; 9. a spring; 10. a bolt seat; 11. a supporting block; 12. a stop hole; 13. positioning and surrounding the anti-drop groove; 14. a screw; 15. a bearing; 16. an anti-skid foot pad.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that as used in the following description, the terms "front," "back," "left," "right," "upper" and "lower" refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1-8, the present invention provides a technical solution: a rotary positioning adjusting seat of a chair comprises a rotary seat 3 and a fixed base 4, wherein the surface of the fixed base 4 is flat, the best scheme is set, a fixed column 5 is fixed in the middle of the upper surface of the fixed base 4, a plurality of blocking holes 12 are formed in the surface of the fixed base 4 around the fixed column 5 by taking the fixed column 5 as a center, and the rotary seat 3 can be locked at a plurality of different angles relative to the fixed base 4 through the plurality of blocking holes 12; since the fixed base 4 is used for installing the fixed chair foot rest, the fixed base 4 is fixed.

The preferred scheme is as follows: the fixed base 4 is made of a base plate, the fixed base 4 is made of ferrous metal, and the gear hole 12 of the ferrous metal is formed by drilling when the ferrous metal is made; the fixing base 4 is made of hard plastic, and the stop hole 12 is formed by injection molding when the hard plastic is made.

The first preferred scheme is as follows: the fixed base 4 and the fixed column 5 are made of hard plastics and are integrally formed by injection molding.

The preferred scheme II comprises the following steps: the fixed base 4 and the fixed column 5 are made of iron metal, and the fixed column 5 is welded and fixed in the middle of the surface of the fixed base 4.

The rotary base 3 is provided with a column hole 31 on the reverse side, preferably: the column hole 31 is a blind hole, and the blind hole is better used for inserting and fixing the column 5 and positioning; the fixing column 5 is just suitable for the column hole 31, the fixing column 5 is inserted into the column hole 31, and the rotating seat 3 can rotate left and right relative to the fixed base 4 through the matching of the fixing column 5 and the column hole 31;

the preferred scheme is as follows: the rotating base 3 comprises a rotating column and a rotating top plate, and a column hole 31 is formed in the reverse side of the rotating column; when the rotating base 3 is made of plastic, the rotating base comprises a column hole 31, a rotating column and a rotating top plate which are integrally formed through injection molding; if the rotary column and the rotary top plate are made of metal, the rotary column can be formed by processing a proper hollow pipe, and then the rotary top plate is welded.

The lateral wall of roating seat 3 is connected with elastic lock device 6, elastic lock device 6 is used for locking and unblock roating seat 3 with keeping off position hole 12 cooperation, elastic lock device 6 falls into different fender position hole 12 and the orientation angle of locking chair through self bounce-back ability (because roating seat 3 is used for the installation fixed chair seat, so, elastic lock device 6 is along with the pivoted when seat position is rotated, elastic lock device 6 falls into the front orientation angle of locking the chair promptly when corresponding fender position hole 12), elastic lock device 6 falls into keeping off position hole 12 and can not rotate for locking roating seat 3, elastic lock device 6 withdraws from and keeps off position hole 12 and can rotate for unblock roating seat 3.

The rotary positioning adjusting seat structure of the chair is arranged behind the chair, can realize the basic rotary locking and unlocking functions of the chair seat, and the elastic locking device 6 can be automatically locked, has a simple and large structure, avoids manual locking, does not worry about locking in place or forgetting to lock, increases the safety of old, weak, sick and disabled users, and is convenient to operate; and the complexity of the structure, the cost and the weight are reduced.

The elastic lock device 6 comprises a lever 7, a plug pin seat 10 and a supporting block 11, the plug pin seat 10 and the supporting block 11 are integrally connected to the rotating seat 3, the top end of the supporting block 11 is pressed against the reverse side of the front section of the lever 7, and the lever 7 is arranged at a position convenient for a general user to press; the supporting block 11 is arranged as a basic fulcrum for the operation of the lever 7, so that the lever 7 has a supporting point; of course, the top end of the supporting block 11 can also be movably connected with the front section of the lever 7, so as to achieve the purpose of setting a basic fulcrum.

Preferably: the reverse side of the front section of the lever 7 is provided with a concave part, and the supporting block 11 is inserted into the concave part, so that the lever 7 is prevented from being possibly separated and eccentric from the left and the right, or the lever is prevented from being damaged due to manual misoperation or improper operation. The lever 7 is integrally injection molded, and the lever 7 and the corresponding concave portion are also integrally injection molded.

A pin hole 8A which vertically penetrates is formed in the pin seat 10, an elastic lock pin 8 penetrates through the pin hole 8A, and the top of the elastic lock pin 8 is hinged (movably connected) with the front end of the lever 7; in a normal state, the elastic lock pin 8 falls into the locking rotary seat 3 in the gear hole 12 through self rebound force and cannot rotate; the tail of the lever 7 is pressed down by hand, so that the front end of the lever tilts up to pull the elastic lock pin 8 to retract into the pin hole 8A so as to unlock the gear withdrawing hole 12, and after unlocking, the rotating seat 3 rotates left and right relative to the fixed base 4; after the lever 7 is released by hand, the elastic lock pin 8 is inserted into the gear hole 12 at a waiting time, and when the elastic lock pin 8 reaches the gear hole 12 and is centered, the elastic lock pin 8 falls into the gear hole 12 through self-resilience force and is locked.

Of course, the basic fulcrum of the lever 7 is not necessarily the supporting block 11, but a wider plane may be provided at the top of the latch base 10, a protruding part extends below the front part of the lever 7, the protruding part presses on the wider plane, and of course, when the elastic lock pin 8 is lifted by the back wing, the tail part of the lever 7 is pressed down, and the front end is lifted to pull the elastic lock pin 8 to retract into the pin hole 8A to unlock the shift hole 12 by taking the protruding part as the fulcrum.

Preferably: the bolt seat 10, the supporting block 11, the pin hole 8A, the rotating seat 3 and the column hole 31 are integrally formed in an injection molding mode.

The pin hole 8A comprises an upper small hole section 8A1 and a lower large hole section 8A3, and a jacking step 8A2 is formed between the upper small hole section 8A1 and the lower large hole section 8A3 (the upper small hole section 8A1, the jacking step 8A2 and the lower large hole section 8A3 are formed by injection molding);

the elastic lock pin 8 is formed by processing a stainless steel into a whole, the elastic lock pin 8 comprises a small-diameter pin section 801, a large-diameter pin section 803 and a spring 9, and an encircling step 802 is formed between the small-diameter pin section 801 and the large-diameter pin section 803;

the small-diameter pin section 801 is connected with a spring 9 in a penetrating mode, the diameters of the spring 9 and the large-diameter pin section 803 are larger than that of the upper small-hole section 8A1, after the elastic lock pin 8 is inserted into the pin hole 8A, the small-diameter pin section 801 upwards penetrates through the upper small-hole section 8A1 to extend out of the top of the small-diameter pin section 801, the top of the small-diameter pin section 801 is hinged (movably connected) with the front end of the lever 7, and the front end of the lever 7 is matched with the jacking step 8A2 and the surrounding step 802 to prevent the spring 9 and the elastic lock pin 8 from being disengaged; the top end of the spring 9 is pressed against the upper end of the pressing step 8A2, the lower end of the spring 9 is pressed against the surrounding step 802, and the spring 9 is arranged above the inner part of the lower large hole section 8A3; the large-diameter pin section 803 is connected with the lower large-hole section 8A3 in a penetrating manner;

the upper small hole section 8A1 is only used for penetrating and connecting the small diameter pin section 801 and is just suitable, the lower large hole section 8A3 is only used for penetrating and connecting the large diameter pin section 803 and the spring 9 and is just suitable, and the diameters of the spring 9 and the large diameter pin section 803 are larger than that of the upper small hole section 8A1, so that the upper small hole section 8A1 is used for preventing the large diameter pin section 803 and the spring 9 from penetrating; the structure forms the elastic lock pin 8, the elastic lock pin 8 has an automatic rebound function, and the spring 9 is used for enabling the elastic lock pin 8 to automatically reset and lock.

Under a normal state, the large-diameter pin section 803 falls into the locking rotary seat 3 in the gear hole 12 through the rebound force of the spring 9; the tail of the lever 7 is pressed down by hand, the front end of the lever 7 is raised, the small-diameter pin section 801 is pulled to rise, the large-diameter pin section 803 is retracted into the lower large-hole section 8A3 to unlock the withdrawing gear hole 12, the seat frame 1 can be rotated at the moment, after the lever 7 is rotated to a proper position, the tail of the lever 7 is loosened, and under the action of the rebound force of the spring 9, the front end of the lever 7 and the small-diameter pin section 801 descend to enable the large-diameter pin section 803 to extend into the corresponding gear hole 12 for limiting and fixing, and the seat frame 1 is locked to face.

A positioning surrounding anti-drop groove 13 is arranged on the middle section of the fixing column 5; the lateral wall of the rotary seat 3 is transversely provided with a through screw hole 32, the screw hole 32 is screwed with the screw rod 14, one end of the screw rod 14 is screwed and penetrates through the screw hole 32 to be inserted into the positioning surrounding anti-falling groove 13, so that the rotary seat 3 is prevented from being separated from the fixed base 4 in the rotating process or being used at ordinary times or being separated from the fixed base 4 or being transported.

A bearing step 33 is arranged at the orifice of the column hole 31, and a bearing 15 is fixedly embedded at the bearing step 33; fixed column 5 passes bearing 15 and inserts inside post hole 31, and roating seat 3 can be for unable adjustment base 4 rotation about through fixed column 5, bearing 15, the cooperation in post hole 31, and bearing 15 improves roating seat 3's lubricating property, and is rotatory more natural, and it is rotatory lighter, prevents that roating seat 3 and fixed column 5 from wearing and tearing easily, prevents that the bottom of roating seat 3 from bumping the upper surface of scraping wearing and tearing unable adjustment base 4.

The top of the rotating seat 3 is fixedly connected with a seat frame 1; the bottom of the fixed base 4 is fixedly connected with a chair foot frame 2, the seat frame 1 and the chair foot frame 2 are made of stainless steel tubes, and the stainless steel tubes have the functions of rust prevention and corrosion prevention and are easy to clean, so that the chair foot frame is convenient for old people or patients to shower.

The seat frame 1 is used for mounting a seat plate and a backrest plate (not shown), and the seat plate and the backrest plate can adopt soft cushion plates to increase the comfort degree of the old or patients in use.

The bottom of the chair foot rest 2 is fixedly connected with an anti-slip foot pad 16, which increases the friction force at the bottom of the chair foot rest 2 and prevents the old or the patient from easily slipping when in use. The chair foot frame 2 is made of stainless steel tubes, and the stainless steel tubes have the functions of rust prevention and easy cleaning.

The surface of the fixed base 4 around the fixed column 5 is provided with a plurality of gear holes 12 which are uniformly distributed around the fixed column for limiting and fixing the seat frame 1 in different directions after being locked.

The shift holes 12 are four to ten, preferably eight, so that the seat frame 1 can be rotated to a plurality of orientations and fixed in a limited manner by the corresponding shift holes 12.

The working principle is as follows: the rotary seat 3 in the rotary positioning adjusting seat of the chair can rotate left and right relative to the fixed base 4 through the matching of the fixed column 5 and the column hole 31, so that the seat frame 1 can rotate very smoothly relative to the chair foot frame 2, the rotary positioning adjusting seat of the chair is internally provided with the elastic lock device 6, the elastic lock device 6 is used for locking and unlocking the rotary seat 3 through matching with the gear hole 12, the elastic lock device 6 falls into different gear holes 12 to lock the orientation angle of the chair, the elastic lock device 6 falls into the gear hole 12 to lock the rotary seat 3 and cannot rotate, the elastic lock device 6 exits from the gear hole 12 to unlock the rotary seat 3 and can rotate, and the large-diameter pin section 803 falls into the gear hole 12 to lock the rotary seat 3 through the resilience of the spring 9 in a normal state; the tail of the lever 7 is pressed downwards to enable the front end of the lever to tilt and pull the small-diameter pin section 801 to ascend, the large-diameter pin section 803 is retracted into the lower large-hole section 8A3 to unlock the gear hole 12, the seat frame 1 can be rotated at the moment, after the seat frame 1 is rotated to a proper position, the tail of the lever 7 is loosened, and under the action of the rebound force of the spring 9, the front end of the lever 7 and the small-diameter pin section 801 descend to enable the large-diameter pin section 803 to extend into the corresponding gear hole 12 to be limited and fixed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a rotatory location regulation seat of chair, includes roating seat (3) and unable adjustment base (4), its characterized in that: a fixed column (5) is fixed in the middle of the upper surface of the fixed base (4), and a plurality of gear holes (12) are formed in the periphery of the fixed column (5);

a column hole (31) is formed in the reverse side of the rotating seat (3), the fixing column (5) is just suitable for the column hole (31), the fixing column (5) is inserted into the column hole (31), and the rotating seat (3) can rotate left and right relative to the fixed base (4) through the matching of the fixing column (5) and the column hole (31);

the lateral wall of roating seat (3) is connected with elastic locking device (6), and elastic locking device (6) are used for locking and unblock roating seat (3) with keeping off position hole (12) cooperation, and elastic locking device (6) fall into different fender position hole (12) and lock the orientation angle of chair, and elastic locking device (6) fall into and keep off position hole (12) and can not rotate for locking roating seat (3), and elastic locking device (6) withdraw from and keep off position hole (12) and can rotate for unblock roating seat (3).

2. The rotary positioning adjustment seat of a chair according to claim 1, characterized in that: the elastic lock device (6) comprises a lever (7), a plug pin seat (10) and a supporting block (11), the plug pin seat (10) and the supporting block (11) are integrally connected to the rotating seat (3), and the top end of the supporting block (11) is pressed against the reverse side of the front section of the lever (7);

a pin hole (8A) which vertically penetrates through the pin seat (10) is formed in the pin hole (8A), an elastic lock pin (8) penetrates through the pin hole (8A), and the top of the elastic lock pin (8) is hinged with the front end of the lever (7); in a normal state, the elastic lock pin (8) falls into the gear hole (12) through the rebound force to lock the rotary seat (3); the tail of the lever (7) is pressed down to enable the front end of the lever to tilt and pull the elastic lock pin (8) to retract into the pin hole (8A) so as to unlock the withdrawing gear hole (12).

3. A rotary positioning adjustment seat for a chair according to claim 2, characterized in that: the pin hole (8A) comprises an upper small hole section (8A 1) and a lower large hole section (8A 3), and a jacking step (8A 2) is formed between the upper small hole section (8A 1) and the lower large hole section (8A 3);

the elastic lock pin (8) comprises a small-diameter pin section (801) and a large-diameter pin section (803), and an encircling step (802) is formed between the small-diameter pin section (801) and the large-diameter pin section (803);

the small-diameter pin section (801) is connected with a spring (9) in a penetrating manner, the diameters of the spring (9) and the large-diameter pin section (803) are larger than that of the upper small hole section (8A 1), after the elastic lock pin (8) is inserted into the pin hole (8A), the small-diameter pin section (801) upwards penetrates through the upper small hole section (8A 1) to extend out of the outer top, and the top of the small-diameter pin section (801) is hinged with the front end of the lever (7); the top end of the spring (9) is pressed against the upper end and the lower end of the pressing step (8A 2) and the surrounding step (802), and the spring (9) is arranged above the inner part of the lower large hole section (8A 3); the large-diameter pin section (803) is connected to the lower large hole section (8A 3) in a penetrating manner;

under a normal state, the large-diameter pin section (803) falls into the gear hole (12) through the rebound force of the spring (9) to lock the rotary seat (3); the tail of the lever (7) is pressed downwards, so that the front end of the lever tilts up to pull the small-diameter pin section (801) to rise, and the large-diameter pin section (803) retracts into the lower large hole section (8A 3) to unlock the gear withdrawing hole (12).

4. A rotary positioning adjustment seat for a chair according to any of claims 1-3, characterized in that: a positioning surrounding anti-falling groove (13) is arranged on the middle section of the fixing column (5); the side wall of the rotating seat (3) is transversely provided with a through screw hole (32), the screw hole (32) is screwed with a screw rod (14), and one end of the screw rod (14) is screwed and penetrates through the screw hole (32) to be inserted into the positioning surrounding anti-falling groove (13).

5. A rotary positioning adjustment seat for a chair according to any of claims 1-3, characterized in that: a bearing step (33) is arranged at the orifice of the column hole (31), and a bearing (15) is embedded and fixed at the bearing step (33); the fixing column (5) penetrates through the bearing (15) and is inserted into the column hole (31), and the rotating seat (3) can rotate left and right relative to the fixing base (4) through the matching of the fixing column (5), the bearing (15) and the column hole (31).

6. A rotary positioning adjustment seat for a chair according to any of claims 1-3, characterized in that: the top of the rotating seat (3) is fixedly connected with a seat frame (1); the bottom of the fixed base (4) is fixedly connected with a chair foot rest (2).

7. A rotary positioning adjustment seat for a chair according to claim 6, characterized in that: the seat frame (1) can be provided with a seat plate and a backrest plate.

8. A rotary positioning adjustment seat for a chair according to claim 6, characterized in that: the bottom of the chair foot rest (2) is fixedly connected with an anti-skidding foot pad (16).

9. A rotary positioning adjustment seat for a chair according to any of claims 1-3, wherein: the surface of the fixed base (4) on the periphery of the fixed column (5) is provided with a plurality of gear holes (12) which are uniformly distributed on the periphery.

10. A rotary positioning adjustment seat for a chair according to any of claims 1-3, characterized in that: the number of the gear holes (12) is four to ten.

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