阅读说明：本技术 一种具有防滑功能的拔牙装置 (Tooth extraction device with anti-skidding function ) 是由 白梅 于 2021-09-13 设计创作，主要内容包括：本发明涉及一种具有防滑功能的拔牙装置,包括连接板、夹持机构和限位机构,所述连接板水平设置,所述夹持机构设置在连接板上,所述限位机构设置在连接板的下方,所述夹持机构包括夹持组件、滑动组件和连接组件,所述限位机构包括连接管、磁环、固定环、限位杆、抵靠球、第一弹簧、移动板和拉绳,该具有防滑功能的拔牙装置通过夹持机构和限位机构的配合,实现对夹持板的移动和限位,防止出现打滑的现象,避免造成对人们的二次伤害,实现对移动杆的精准移动,同时的使得移动杆在滑动槽内移动的更加稳定,提升夹持效果,提升固定效果,提高了使用的实用性。(The invention relates to a tooth extraction device with an anti-skid function, which comprises a connecting plate, a clamping mechanism and a limiting mechanism, the connecting plate is horizontally arranged, the clamping mechanism is arranged on the connecting plate, the limiting mechanism is arranged below the connecting plate, the clamping mechanism comprises a clamping component, a sliding component and a connecting component, the limiting mechanism comprises a connecting pipe, a magnetic ring, a fixing ring, a limiting rod, a leaning ball, a first spring, a moving plate and a pull rope, the tooth extraction device with the anti-skidding function realizes the movement and the limitation of the clamping plate through the matching of the clamping mechanism and the limiting mechanism, prevents the phenomenon of skidding, avoids causing secondary injury to people, realizes the accurate movement of the movable rod, simultaneously make the carriage release lever remove more stable in the sliding tray, promote the centre gripping effect, promote fixed effect, improved the practicality of using.)

1. The tooth extraction device with the anti-skidding function is characterized by comprising a connecting plate (1), a clamping mechanism and a limiting mechanism, wherein the connecting plate (1) is horizontally arranged, the clamping mechanism is arranged on the connecting plate (1), and the limiting mechanism is arranged below the connecting plate (1);

the clamping mechanisms are two, the two clamping mechanisms are respectively arranged at two ends of the connecting plate (1), the clamping mechanisms comprise clamping components, sliding components and connecting components, strip-shaped sliding grooves are formed in the connecting plate (1), strip-shaped limiting grooves are respectively formed in the inner walls of two sides of each sliding groove, each sliding component is arranged in each limiting groove and comprises a gear (2), a rack (3) and a bearing (4), each bearing (4) is arranged in each limiting groove, each bearing (4) is in rolling connection with each limiting groove, an annular positioning groove is formed in the outer ring of each bearing (4), each gear (2) is sleeved on each bearing (4), each gear (2) is located in each positioning groove, each gear (2) is connected with each bearing (4), each rack (3) is arranged at the bottom end inside each limiting groove, and each rack (3) is arranged opposite to each positioning groove, the rack (3) is meshed with the gear (2);

the connecting assembly is arranged below the connecting plate (1), the connecting assembly comprises a moving ring (5), a moving rod (6), a pushing rod (7) and clamping plates (8), the moving ring (5) is arranged above the connecting plate (1), the pushing rod (7) is arranged below the connecting plate (1), the moving rod (6) is vertically arranged between the pushing rod (7) and the moving ring (5), one end of the moving rod (6) penetrates through a bearing (4) to be connected with the moving ring (5), the other end of the moving rod (6) is connected with the pushing rod (7), the clamping plates (8) are vertically arranged at one end, far away from the moving rod (6), of the pushing rod (7), the pushing rod (7) is obliquely arranged, and the two clamping plates (8) in the two clamping mechanisms are just opposite to each other;

the clamping components are uniformly arranged at one end, away from the push rod (7), of the clamping plate (8), and comprise semicircular bulges (9), positioning units and abutting units, the bulges (9) are arranged on the clamping plate (8), the circle centers of the bulges (9) are located on the clamping plate (8), the bulges (9) are arranged in a hollow mode, the positioning units and the abutting units are arranged in the bulges (9), and the positioning units are connected with the abutting units;

the limiting mechanism is arranged on the connecting plate (1), the limiting mechanism is positioned between the two moving rods (6), the limiting mechanism comprises a connecting pipe (10), a magnetic ring (11), a fixing ring (12), a limiting rod (13), a supporting ball (14), a first spring (15), a moving plate (16) and a pull rope (17), the supporting ball (14) is arranged below the connecting plate (1), the connecting pipe (10) is vertically arranged between the supporting ball (14) and the connecting plate (1), the top end of the connecting pipe (10) is connected with the connecting plate (1), the fixing ring (12) and the magnetic ring (11) are both arranged in the connecting pipe (10), the fixing ring (12) is positioned below the magnetic ring (11), the fixing ring (12) is connected with the connecting pipe (10), the magnetic ring (11) is in sliding connection with the connecting ring, and the magnetic ring (11) and the fixing ring (12) are attracted, the movable plate (16) is arranged above the connecting plate (1), the limiting rod (13) is arranged between the abutting ball (14) and the movable plate (16), one end of the limiting rod (13) penetrates through the connecting plate (1) to be connected with the movable plate (16), the other end of the limiting rod (13) penetrates through the connecting pipe (10) to be connected with the abutting ball (14), the limiting rod (13) sequentially penetrates through the magnetic ring (11) and the fixing ring (12), the outer ring of the limiting rod (13) is connected with the inner ring of the magnetic ring (11), the limiting rod (13) is connected with the fixing ring (12) in a sliding mode, the first spring (15) is arranged in the connecting pipe (10), the first spring (15) is located between the magnetic ring (11) and the fixing ring (12), the first spring (15) is sleeved on the limiting rod (13), one end of the first spring (15) is connected with the magnetic ring (11), the other end of first spring (15) is connected with solid fixed ring (12), stay cord (17) have two, and two stay cords (17) set up respectively in the both sides of gag lever post (13), stay cord (17) are located and lean on between ball (14) and carriage release lever (6), the one end and the carriage release lever (6) of stay cord (17) are connected, the other end and the ball (14) of leaning on of stay cord (17) are connected.

2. The tooth extraction device with the anti-skidding function according to claim 1, wherein the abutting unit comprises a piston cylinder (18), a piston rod (19), a second spring (20) and an ejector pin (21), the piston cylinder (18) is horizontally arranged on the clamping plate (8), the ejector pin (21) is arranged at one end of the piston cylinder (18) far away from the clamping plate (8), the piston rod (19) is arranged between the ejector pin (21) and the piston cylinder (18), the second spring (20) is arranged in the piston cylinder (18), one end of the piston rod (19) is connected with the ejector pin (21), the other end of the piston rod (19) extends into the piston cylinder (18) to be connected with the second spring (20), one end of the second spring (20) far away from the piston rod (19) is connected with the inner wall of the piston cylinder (18) close to one end of the clamping plate (8), and a communication hole is arranged on the protrusion (9), the communicating hole and the piston rod (19) are coaxially arranged, the ejector pin (21) is located in the communicating hole, and the ejector pin (21) is connected with the communicating hole in a sliding mode.

3. The tooth extraction device with the anti-skidding function according to claim 2, wherein the positioning unit comprises a lantern ring (22), a bead screw (23), a positioning bar (24) and restoring units, the positioning bar (24) is horizontally arranged on the piston rod (19), the lantern ring (22) is sleeved on the piston rod (19), the lantern ring (22) is slidably connected with the piston rod (19) through the positioning bar (24), the bead screw (23) is arranged on the inner wall of the lantern ring (22), a groove is arranged on the piston rod (19), the bead screw (23) is located in the groove, the two restoring units are respectively arranged on two sides of the piston rod (19), each restoring unit comprises an elastic rope (25), a ball (26) and a restoring rod (27), the ball (26) is arranged on one side of the piston rod (19), the restoring rod (27) is arranged between a ball (26) and a piston cylinder (18), one end of the restoring rod (27) is connected with the ball (26), the other end of the restoring rod (27) is hinged with the outer ring of the piston cylinder (18), a torsion spring is arranged at the hinged position of the restoring rod (27) and the piston cylinder (18), one end, far away from the restoring rod (27), of the ball (26) abuts against the inner wall of a bulge (9), the ball (26) is connected with the bulge (9) in a rolling mode, the elastic rope (25) is arranged between a lantern ring (22) and the restoring rod (27), one end of the elastic rope (25) is connected with the restoring rod (27), and the other end of the elastic rope (25) is connected with the outer ring of the lantern ring (22).

4. The tooth extraction device with anti-slip function according to claim 1, characterized in that the material of the protrusion (9) is silicone.

Technical Field

The invention particularly relates to a tooth extraction device with an anti-skid function.

Background

When a dentist in stomatology treats tooth extraction, the impact type tooth extraction is a high-efficiency and low-trauma extraction method, and has a plurality of research results in the journal of oral cavity specialty in China, however, the impact type tooth extraction has the defect that the tooth is easy to slip to form the injury of adjacent teeth and soft tissues, and particularly, the impact type tooth extraction is mainly formed by reforming an old arc osteotome or a wide dental elevator at present, and is lack of special instruments, so that the use of the impact type tooth extraction is severely limited.

The tooth extraction forceps are common tools for stomatologists, and the existing tooth extraction forceps cause slippage due to the fact that the existing tooth extraction forceps cannot clamp teeth, secondary damage is caused to the oral cavity of a patient, and tooth extraction time is prolonged.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the tooth extraction device with the anti-skidding function is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a tooth extraction device with an anti-skid function comprises a connecting plate, a clamping mechanism and a limiting mechanism, wherein the connecting plate is horizontally arranged, the clamping mechanism is arranged on the connecting plate, and the limiting mechanism is arranged below the connecting plate;

the clamping mechanisms are respectively arranged at two ends of the connecting plate, each clamping mechanism comprises a clamping assembly, a sliding assembly and a connecting assembly, a strip-shaped sliding groove is formed in the connecting plate, strip-shaped limiting grooves are respectively formed in the inner walls of two sides of the sliding groove, the sliding assembly is arranged in the limiting grooves, each sliding assembly comprises a gear, a rack and a bearing, the bearings are arranged in the limiting grooves, the bearings are in rolling connection with the limiting grooves, annular positioning grooves are formed in the outer rings of the bearings, the gears are sleeved on the bearings, the gears are located in the positioning grooves and connected with the bearings, the racks are arranged at the bottom ends inside the limiting grooves, the racks are opposite to the positioning grooves, and the racks are meshed with the gears;

the connecting assembly is arranged below the connecting plate and comprises a moving ring, a moving rod, a pushing rod and clamping plates, the moving ring is arranged above the connecting plate, the pushing rod is arranged below the connecting plate, the moving rod is vertically arranged between the pushing rod and the moving ring, one end of the moving rod penetrates through a bearing and is connected with the moving ring, the other end of the moving rod is connected with the pushing rod, the clamping plates are vertically arranged at one end of the pushing rod, which is far away from the moving rod, the pushing rod is obliquely arranged, and the two clamping plates in the two clamping mechanisms are oppositely arranged;

the clamping components are uniformly arranged at one end of the clamping plate, which is far away from the push rod, and each clamping component comprises a semicircular bulge, a positioning unit and a propping unit, wherein the bulge is arranged on the clamping plate, the circle center of the bulge is positioned on the clamping plate, the bulge is arranged in a hollow manner, the positioning unit and the propping unit are both arranged in the bulge, and the positioning unit is connected with the propping unit;

the limiting mechanism is arranged on the connecting plate and is positioned between the two moving rods, the limiting mechanism comprises a connecting pipe, a magnetic ring, a fixed ring, a limiting rod, a supporting ball, a first spring, a moving plate and a pull rope, the supporting ball is arranged below the connecting plate, the connecting pipe is vertically arranged between the supporting ball and the connecting plate, the top end of the connecting pipe is connected with the connecting plate, the fixed ring and the magnetic ring are both arranged in the connecting pipe, the fixed ring is positioned below the magnetic ring, the fixed ring is connected with the connecting pipe, the magnetic ring is in sliding connection with the connecting ring, the magnetic ring and the fixed ring attract each other, the moving plate is arranged above the connecting plate, the limiting rod is arranged between the supporting ball and the moving plate, one end of the limiting rod penetrates through the connecting plate to be connected with the moving plate, and the other end of the limiting rod penetrates through the connecting pipe to be connected with the supporting ball, the limiting rod sequentially penetrates through the magnetic ring and the fixing ring, the outer ring of the limiting rod is connected with the inner ring of the magnetic ring, the limiting rod is connected with the fixing ring in a sliding mode, the first spring is arranged in the connecting pipe and located between the magnetic ring and the fixing ring, the first spring is sleeved on the limiting rod, one end of the first spring is connected with the magnetic ring, the other end of the first spring is connected with the fixing ring, the two pull ropes are arranged on two sides of the limiting rod respectively, the two pull ropes are located between the leaning ball and the moving rod, one end of each pull rope is connected with the moving rod, and the other end of each pull rope is connected with the leaning ball.

In order to realize the antiskid to the grip block, prevent grip block and main part separation, and cause the secondary injury, it includes piston cylinder, piston rod, second spring and thimble to support to lean on the unit, the piston cylinder level sets up on the grip block, the thimble sets up the one end of keeping away from the grip block at the piston cylinder, the piston rod sets up between thimble and piston cylinder, the second spring sets up in the piston cylinder, the one end and the thimble of piston rod are connected, the other end of piston rod stretches into in the piston cylinder with second spring coupling, the one end that the piston rod was kept away from to the second spring is close to the inner wall connection of grip block one end with the piston cylinder, be equipped with the intercommunicating pore in the arch, intercommunicating pore and the coaxial setting of piston rod, the thimble is located the intercommunicating pore, thimble and intercommunicating pore sliding connection.

In order to limit the thimble, the positioning unit comprises a sleeve ring, a ball screw, a positioning bar and two restoring units, the positioning bar is horizontally arranged on the piston rod, the sleeve ring is sleeved on the piston rod, the sleeve ring is slidably connected with the piston rod through the positioning bar, the ball screw is arranged on the inner wall of the sleeve ring, a groove is arranged on the piston rod, the ball screw is positioned in the groove, the two restoring units are respectively arranged on two sides of the piston rod, each restoring unit comprises an elastic rope, a ball and a restoring rod, the ball is arranged on one side of the piston rod, the restoring rod is arranged between the ball and the piston cylinder, one end of the restoring rod is connected with the ball, the other end of the restoring rod is hinged with the outer ring of the piston cylinder, a torsion spring is arranged at the hinged position of the restoring rod and the piston cylinder, one end of the ball, which is far away from the restoring rod, is abutted against the inner wall of the protrusion, the ball is connected with the protrusion in a rolling manner, the elastic rope is arranged between the lantern ring and the restoring rod, one end of the elastic rope is connected with the restoring rod, and the other end of the elastic rope is connected with the outer ring of the lantern ring.

In order to improve the safety of people, the convex manufacturing material is silica gel.

The tooth extraction device with the anti-skidding function has the advantages that the clamping plate is moved and limited through the matching of the clamping mechanism and the limiting mechanism, the phenomenon of skidding is prevented, secondary damage to people is avoided, the moving rod is accurately moved through the matching of the gear and the rack, the moving rod is enabled to move more stably in the sliding groove, the contact area between the moving rod and the main body is increased through the protrusion, the clamping effect is improved through the abutting of the ejector pin and the main body, the limiting of the moving rod is realized through the limiting mechanism, the clamping plate is prevented from loosening due to the movement of the moving rod during treatment, the fixing effect is improved, and the practicability of use is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of a tooth extraction device with anti-slip function according to the present invention;

FIG. 2 is a schematic view showing a coupling structure of a coupling plate and a sliding member of the tooth extraction device with an anti-slip function according to the present invention;

FIG. 3 is a schematic view of a connection structure of a tooth extraction device connection tube, a magnetic ring, a fixing ring, a limiting rod, a support ball, a first spring and a moving plate with an anti-slip function according to the present invention;

FIG. 4 is a schematic view of the anti-slip gripping assembly of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4;

in the figure: 1. the device comprises a connecting plate, 2, a gear, 3, a rack, 4, a bearing, 5, a moving ring, 6, a moving rod, 7, a pushing rod, 8, a clamping plate, 9, a protrusion, 10, a connecting pipe, 11, a magnetic ring, 12, a fixing ring, 13, a limiting rod, 14, a support ball, 15, a first spring, 16, a moving plate, 17, a pull rope, 18, a piston cylinder, 19, a piston rod, 20, a second spring, 21, an ejector pin, 22, a lantern ring, 23, a ball screw, 24, a positioning bar, 25, an elastic rope, 26, a ball and 27 a return rod.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1-3, a tooth extraction device with an anti-slip function comprises a connecting plate 1, a clamping mechanism and a limiting mechanism, wherein the connecting plate 1 is horizontally arranged, the clamping mechanism is arranged on the connecting plate 1, and the limiting mechanism is arranged below the connecting plate 1;

the clamping mechanisms are respectively arranged at two ends of a connecting plate 1, each clamping mechanism comprises a clamping assembly, a sliding assembly and a connecting assembly, a strip-shaped sliding groove is formed in the connecting plate 1, strip-shaped limiting grooves are respectively formed in the inner walls of two sides of the sliding groove, the sliding assembly is arranged in the limiting grooves, each sliding assembly comprises a gear 2, a rack 3 and a bearing 4, each bearing 4 is arranged in the limiting groove, each bearing 4 is in rolling connection with the corresponding limiting groove, an annular positioning groove is formed in the outer ring of each bearing 4, each gear 2 is sleeved on each bearing 4, each gear 2 is located in each positioning groove, each gear 2 is connected with each bearing 4, each rack 3 is arranged at the bottom end inside each limiting groove, each rack 3 is arranged opposite to each positioning groove, and each rack 3 is meshed with each gear 2;

the connecting assembly is arranged below the connecting plate 1 and comprises a moving ring 5, a moving rod 6, a pushing rod 7 and clamping plates 8, the moving ring 5 is arranged above the connecting plate 1, the pushing rod 7 is arranged below the connecting plate 1, the moving rod 6 is vertically arranged between the pushing rod 7 and the moving ring 5, one end of the moving rod 6 penetrates through a bearing 4 to be connected with the moving ring 5, the other end of the moving rod 6 is connected with the pushing rod 7, the clamping plates 8 are vertically arranged at one end, far away from the moving rod 6, of the pushing rod 7, the pushing rod 7 is obliquely arranged, and the two clamping plates 8 in the two clamping mechanisms are just opposite to each other;

the clamping components are uniformly arranged at one end, far away from the push rod 7, of the clamping plate 8, each clamping component comprises a semicircular bulge 9, a positioning unit and an abutting unit, the bulge 9 is arranged on the clamping plate 8, the circle center of the bulge 9 is located on the clamping plate 8, the bulge 9 is arranged in a hollow mode, the positioning unit and the abutting unit are both arranged in the bulge 9, and the positioning units are connected with the abutting units;

the limiting mechanism is arranged on the connecting plate 1 and is positioned between the two moving rods 6, the limiting mechanism comprises a connecting pipe 10, a magnetic ring 11, a fixed ring 12, a limiting rod 13, a leaning ball 14, a first spring 15, a moving plate 16 and a pull rope 17, the leaning ball 14 is arranged below the connecting plate 1, the connecting pipe 10 is vertically arranged between the leaning ball 14 and the connecting plate 1, the top end of the connecting pipe 10 is connected with the connecting plate 1, the fixed ring 12 and the magnetic ring 11 are both arranged in the connecting pipe 10, the fixed ring 12 is positioned below the magnetic ring 11, the fixed ring 12 is connected with the connecting pipe 10, the magnetic ring 11 is connected with the connecting ring in a sliding manner, the magnetic ring 11 and the fixed ring 12 are attracted, the moving plate 16 is arranged above the moving plate 1, the limiting rod 13 is arranged between the leaning ball 14 and the moving plate 16, one end of the limiting rod 13 penetrates through the connecting plate 1 and is connected with the moving plate 16, the other end of the limiting rod 13 penetrates through the connecting pipe 10 to be connected with the abutting ball 14, the limiting rod 13 sequentially penetrates through the magnetic ring 11 and the fixing ring 12, the outer ring of the limiting rod 13 is connected with the inner ring of the magnetic ring 11, the limiting rod 13 is connected with the fixing ring 12 in a sliding mode, the first spring 15 is arranged in the connecting pipe 10, the first spring 15 is located between the magnetic ring 11 and the fixing ring 12, the first spring 15 is sleeved on the limiting rod 13, one end of the first spring 15 is connected with the magnetic ring 11, the other end of the first spring 15 is connected with the fixing ring 12, the two pull ropes 17 are arranged on two sides of the limiting rod 13 respectively, the pull ropes 17 are located between the abutting ball 14 and the moving rod 6, one end of each pull rope 17 is connected with the moving rod 6, and the other end of each pull rope 17 is connected with the abutting ball 14.

Here when needs are treated people, at first, the middle finger and the thumb move respectively to two shift rings 5, at this moment, shift ring 5 is promoted, make shift ring 5 move towards the both ends of connecting plate 1, shift ring 5 moves the drive connecting rod and moves, connecting rod drive catch bar 7 moves, catch bar 7 drive grip block 8 moves, make and leave sufficient clearance between two grip blocks 8, at this moment, shift connecting plate 1, make connecting plate 1 be located the preset position, at this moment, shift ring 5 again, make shift ring 5 move towards the direction of gag lever post 13, thereby make two grip blocks 8 realize the centre gripping to the main part.

Here when the movable rod 6 moves, the driving bearing 4 rolls in the limiting groove, and simultaneously the bearing 4 moves the driving gear 2 to move, here because the gear 2 is meshed with the rack 3, so when the gear 2 moves, the gear 2 can rotate simultaneously, and here the gear 2 is connected with the bottom end inside the positioning groove on the outer ring of the bearing 4, so the gear 2 here can rotate freely, here through the cooperation of the gear 2 and the rack 3, the movable rod 6 is more stable in the moving process, and simultaneously the moving distance can be controlled accurately, here the movable body can be pulled out by pulling the movable ring 5.

When a stubborn main body needs to be pulled out, the clamping force and the friction force on the main body need to be increased, the clamping plate 8 is prevented from being separated, at the moment, the moving plate 16 is pushed by the forefinger, the moving plate 16 drives the limiting rod 13 to move in the connecting cylinder, the limiting rod 13 drives the abutting ball 14 to move, the abutting ball 14 drives the pull rope 17 to move, the limiting on the moving rod 6 is realized through the pull rope 17, the moving rod 6 is prevented from moving, meanwhile, the moving rod 6 is better close to the limiting rod 13 in the direction of the limiting rod 13, the clamping force of the clamping plate 8 on the main body is increased, meanwhile, the clamping plate 8 is prevented from moving, the clamping plate 8 is better abutted against the main body, the fixing effect is improved, meanwhile, the limiting rod 13 drives the magnetic ring 11 to move in the connecting cylinder, the distance between the magnetic ring 11 and the fixing ring 12 is reduced, and the suction force between the magnetic ring 11 and the fixing ring 12 is increased, the magnetic ring 11 and the fixing ring 12 are attracted, the first spring 15 is in a stretching state, the magnetic ring 11 and the fixing ring 12 are attracted, and therefore the limiting of the limiting rod 13 is achieved, the first spring 15 arranged in the connecting cylinder is located between the magnetic ring 11 and the fixing ring 12, the attraction of the magnetic ring 11 to the fixing ring 12 is not affected, and the first spring 15 can be arranged between the connecting plate 1 and the magnetic ring 11 to increase the attraction of the magnetic ring 11 to the fixing ring 12, so that the limiting effect of the limiting rod 13 can be improved.

As shown in fig. 4-5, in order to prevent the grip plate 8 from slipping off and prevent the grip plate 8 from separating from the main body, which may cause secondary damage, the abutting unit includes a piston cylinder 18, a piston rod 19, a second spring 20 and a thimble 21, the piston cylinder 18 is horizontally disposed on the grip plate 8, the thimble 21 is disposed at one end of the piston cylinder 18 away from the grip plate 8, the piston rod 19 is disposed between the thimble 21 and the piston cylinder 18, the second spring 20 is disposed in the piston cylinder 18, one end of the piston rod 19 is connected to the thimble 21, the other end of the piston rod 19 extends into the piston cylinder 18 and is connected to the second spring 20, one end of the second spring 20 away from the piston rod 19 is connected to an inner wall of the piston cylinder 18 near one end of the grip plate 8, a communication hole is disposed on the protrusion 9 and is coaxial with the piston rod 19, the thimble 21 is located in the communication hole, the thimble 21 is connected with the communicating hole in a sliding way.

In order to limit the thimble 21, the positioning unit includes a sleeve ring 22, a ball screw 23, a positioning bar 24 and a return unit, the positioning bar 24 is horizontally disposed on the piston rod 19, the sleeve ring 22 is sleeved on the piston rod 19, the sleeve ring 22 is slidably connected with the piston rod 19 through the positioning bar 24, the ball screw 23 is disposed on the inner wall of the sleeve ring 22, a groove is disposed on the piston rod 19, the ball screw 23 is disposed in the groove, the return unit includes two return units, the two return units are disposed on two sides of the piston rod 19 respectively, the return unit includes an elastic rope 25, a ball 26 and a return rod 27, the ball 26 is disposed on one side of the piston rod 19, the return rod 27 is disposed between the ball 26 and the piston cylinder 18, one end of the return rod 27 is connected with the ball 26, and the other end of the return rod 27 is hinged to the outer ring of the piston cylinder 18, the articulated department of restoring rod 27 and piston cylinder 18 is equipped with the torsional spring, the one end that restoring rod 27 was kept away from to ball 26 supports with the inner wall of arch 9 and leans on, ball 26 and arch 9 roll connection, stretch cord 25 sets up between lantern ring 22 and restoring rod 27, the one end and the restoring rod 27 of stretch cord 25 are connected, the other end and the outer lane of lantern ring 22 of stretch cord 25 are connected.

In order to improve the safety of people, the bulge 9 is made of silica gel.

When the clamping plate 8 moves towards the main body, the clamping plate 8 moves to drive the protrusion 9 to move, so that the protrusion 9 is abutted with the main body, thereby increasing the contact area between the protrusion 9 and the main body, thereby improving the clamping effect, meanwhile, the protrusion 9 is stressed and deformed, so that the thimble 21 positioned inside the protrusion 9 is abutted with the main body through the communication hole, thereby preventing the protrusion 9 from sliding on the main body, and realizing the positioning of the main body, wherein the thimble 21 is stressed to drive the piston rod 19 to move, so that the piston rod 19 slides in the piston cylinder 18, and the second spring 20 is in a state, wherein the elastic abutting of the main body is realized through the restoring force of the second spring 20.

Meanwhile, the bulge 9 is deformed under the action of force, so that the ball 26 moves away from the piston cylinder 18, the ball 26 drives the return rod 27 to move, the return rod 27 drives the elastic rope 25 to move, at this time, due to the movement of the two restoring rods 27, the distance between the two restoring rods 27 becomes large, so that the bungee cord 25 is in tension, and the bungee cord 25 is now in a tilted state, the elastic cord 25 drives the collar 22 to move towards the piston cylinder 18, the collar 22 drives the wave ball screw 23 to move, the wave ball screw 23 drives the piston rod 19 to move, so that the second spring 20 positioned inside the piston cylinder 18 is in a compressed state, here, when the ball 26 moves to a predetermined position where the sum of the restoring forces of the elastic string 25 and the second spring 20 is greater than the restraining force of the wave ball screw 23, the groove of the piston rod 19 is separated from the wave ball screw 23. The thimble 21 on the piston rod 19 can be stored by sliding the collar 22 on the piston rod 19 through the wave ball screw 23, so that the thimble 21 can better abut against the main body, thereby improving the positioning effect.

The positioning strip 24 arranged on the piston rod 19 is used for limiting the bead screw 23, the return of the thimble 21 is realized through the restoring force of the torsion spring at the hinged part of the return rod 27 and the piston cylinder 18, and the limitation of the piston rod 19 is realized through the positioning strip 24, so that the bead screw 23 is better positioned in the groove on the piston rod 19 in the return process.

Here when needs are treated people, at first, the middle finger and the thumb move respectively to two shift rings 5, at this moment, shift ring 5 is promoted, make shift ring 5 move towards the both ends of connecting plate 1, shift ring 5 moves the drive connecting rod and moves, connecting rod drive catch bar 7 moves, catch bar 7 drive grip block 8 moves, make and leave sufficient clearance between two grip blocks 8, at this moment, shift connecting plate 1, make connecting plate 1 be located the preset position, at this moment, shift ring 5 again, make shift ring 5 move towards the direction of gag lever post 13, thereby make two grip blocks 8 realize the centre gripping to the main part.

Here when the movable rod 6 moves, the driving bearing 4 rolls in the limiting groove, and simultaneously the bearing 4 moves the driving gear 2 to move, here because the gear 2 is meshed with the rack 3, so when the gear 2 moves, the gear 2 can rotate simultaneously, and here the gear 2 is connected with the bottom end inside the positioning groove on the outer ring of the bearing 4, so the gear 2 here can rotate freely, here through the cooperation of the gear 2 and the rack 3, the movable rod 6 is more stable in the moving process, and simultaneously the moving distance can be controlled accurately, here the movable body can be pulled out by pulling the movable ring 5.

When a stubborn main body needs to be pulled out, the clamping force and the friction force on the main body need to be increased, the clamping plate 8 is prevented from being separated, at the moment, the moving plate 16 is pushed by the forefinger, the moving plate 16 drives the limiting rod 13 to move in the connecting cylinder, the limiting rod 13 drives the abutting ball 14 to move, the abutting ball 14 drives the pull rope 17 to move, the limiting on the moving rod 6 is realized through the pull rope 17, the moving rod 6 is prevented from moving, meanwhile, the moving rod 6 is better close to the limiting rod 13 in the direction of the limiting rod 13, the clamping force of the clamping plate 8 on the main body is increased, meanwhile, the clamping plate 8 is prevented from moving, the clamping plate 8 is better abutted against the main body, the fixing effect is improved, meanwhile, the limiting rod 13 drives the magnetic ring 11 to move in the connecting cylinder, the distance between the magnetic ring 11 and the fixing ring 12 is reduced, and the suction force between the magnetic ring 11 and the fixing ring 12 is increased, the magnetic ring 11 and the fixing ring 12 are attracted, the first spring 15 is in a stretching state, the magnetic ring 11 and the fixing ring 12 are attracted, and therefore the limiting of the limiting rod 13 is achieved, the first spring 15 arranged in the connecting cylinder is located between the magnetic ring 11 and the fixing ring 12, the attraction of the magnetic ring 11 to the fixing ring 12 is not affected, and the first spring 15 can be arranged between the connecting plate 1 and the magnetic ring 11 to increase the attraction of the magnetic ring 11 to the fixing ring 12, so that the limiting effect of the limiting rod 13 can be improved.

When the clamping plate 8 moves towards the main body, the clamping plate 8 moves to drive the protrusion 9 to move, so that the protrusion 9 is abutted with the main body, thereby increasing the contact area between the protrusion 9 and the main body, thereby improving the clamping effect, meanwhile, the protrusion 9 is stressed and deformed, so that the thimble 21 positioned inside the protrusion 9 is abutted with the main body through the communication hole, thereby preventing the protrusion 9 from sliding on the main body, and realizing the positioning of the main body, wherein the thimble 21 is stressed to drive the piston rod 19 to move, so that the piston rod 19 slides in the piston cylinder 18, and the second spring 20 is in a state, wherein the elastic abutting of the main body is realized through the restoring force of the second spring 20.

Meanwhile, the bulge 9 is deformed under the action of force, so that the ball 26 moves away from the piston cylinder 18, the ball 26 drives the return rod 27 to move, the return rod 27 drives the elastic rope 25 to move, at this time, due to the movement of the two restoring rods 27, the distance between the two restoring rods 27 becomes large, so that the bungee cord 25 is in tension, and the bungee cord 25 is now in a tilted state, the elastic cord 25 drives the collar 22 to move towards the piston cylinder 18, the collar 22 drives the wave ball screw 23 to move, the wave ball screw 23 drives the piston rod 19 to move, so that the second spring 20 positioned inside the piston cylinder 18 is in a compressed state, here, when the ball 26 moves to a predetermined position where the sum of the restoring forces of the elastic string 25 and the second spring 20 is greater than the restraining force of the wave ball screw 23, the groove of the piston rod 19 is separated from the wave ball screw 23. The thimble 21 on the piston rod 19 can be stored by sliding the collar 22 on the piston rod 19 through the wave ball screw 23, so that the thimble 21 can better abut against the main body, thereby improving the positioning effect.

The positioning strip 24 arranged on the piston rod 19 is used for limiting the bead screw 23, the return of the thimble 21 is realized through the restoring force of the torsion spring at the hinged part of the return rod 27 and the piston cylinder 18, and the limitation of the piston rod 19 is realized through the positioning strip 24, so that the bead screw 23 is better positioned in the groove on the piston rod 19 in the return process.

Compared with the prior art, this tooth extraction device with antiskid function passes through fixture and stop gear's cooperation, realize removal and spacing to grip block 8, prevent the phenomenon of skidding, avoid causing the secondary damage to people, here through the cooperation of gear 2 and rack 3, realize the accurate removal to carriage release lever 6, the while makes carriage release lever 6 more stable of removal in the sliding tray, here through the area of contact of protruding 9 increase with the main part, support through thimble 21 and main part simultaneously and lean on, promote the centre gripping effect, realize spacing to carriage release lever 6 through stop gear, prevent to lead to the not hard up of grip block 8 when the removal of carriage release lever 6 is being treated, promote fixed effect, the practicality of use has been improved.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.