CN112932885B - A dental chair head fixing device for a stomatologist - Google Patents

Abstract

The invention relates to the technical field of medical auxiliary appliances, and discloses a dental chair head fixing device for an oral doctor, which comprises a fixing table, wherein a sliding cylinder is arranged on the inner wall of the fixing table, a fixing ring is fixedly connected to the outer wall of the sliding cylinder, a piston A is sleeved on the inner wall of the sliding cylinder, a telescopic pipe is fixedly connected to the top surface of the piston A, a pressure pad is sleeved on the fixing ring, a suction groove is formed in the center of the top surface of the pressure pad, rotating grooves are formed in the inner parts of the left side and the right side of the fixing ring, rotating rods are connected with the rotating grooves, the rotating rods are fixedly connected with the bottom surface of the pressure pad in a winding mode, the pulling rods are fixedly connected with the bottom surface of the pressure pad, the head of the patient is adsorbed on the head of the patient through the arrangement of the pressure pad, so that the head of the patient can be guided through pulling force during water spitting operation of the patient, the patient can accurately lie down at the center of the fixing ring without observation, the treatment efficiency is improved, meanwhile, the head of the patient is prevented from colliding with the fixing device, and the rotating rods can be driven to rotate to continue to be in a negative pressure state after being pulled each time, and the connection stability is guaranteed.

Description

Dental chair head fixation device for a dentist

technical field

The invention relates to the technical field of medical aids, in particular to a dental chair head fixing device for a dentist.

Background technique

When the dentist treats the patient, the patient needs to lie on the dental chair and then keep his mouth open for the dentist to operate. In order to prevent the patient from shaking his head and affecting the treatment operation, a head fixation device will be installed on the dental chair. to stabilize the patient's head.

In some oral treatment operations, the patient needs to spit out the water in the mouth regularly. After the patient spits out the water in the mouth, the head needs to be re-aligned with the head fixing device through observation. This process takes a certain amount of time and reduces the It improves the efficiency of the treatment, and it is easy to cause the patient's head to collide with the immobilization device at that time, and there is a certain safety risk. Therefore need badly a kind of stomatologist solves the above problem with dental chair head fixation device.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides a dental chair head fixing device for dentists to solve the above problems.

(2) Technical solutions

In order to achieve the above object, the present invention provides the following technical solutions: a dental chair head fixing device for dentists, including a fixed platform, the top surface of the fixed platform is in a hollow state, the inner wall of the fixed platform is provided with a slider, and the outer wall of the slider is fixedly connected There is a fixed ring. The shape of the fixed ring is fan-shaped and the concave surface is upward. The inner wall of the slider is inserted into the piston A. The top surface of the piston A is fixedly connected with a telescopic tube. The telescopic tube runs through the slider and the fixed ring, and part of the outer wall is located on the fixed ring. Above the concave surface of the piston A and the center of the telescopic tube are hollowed out. The center of the concave surface of the fixed ring is provided with a groove and a pressure pad is inserted therein. The pressure pad is a hollow semi-cylindrical body. The top of the pressure pad is fixedly connected, the center of the top surface of the pressure pad is provided with a suction groove, the telescopic tube is connected with the suction groove, and the inner wall of the top surface of the telescopic tube is provided with a circular platform hole A, and the side with the larger diameter of the circular platform hole A faces downward, and the inner wall of the circular platform hole A The round table baffle A is attached, and the round table baffle A is connected to the inner wall of the telescopic tube through the spring A. The left and right sides of the fixed ring are provided with rotating grooves, and the bottom surface of the rotating groove is provided with a hole, and the hole is connected with a rotating rod through a torsion spring. , the outer wall of the rotating rod located in the rotating groove is fixedly connected and is wound with a pull cord, and the end of the pulling rope away from the rotating rod runs through the fixed ring and is fixedly connected with the bottom surface of the pressure pad. , the left and right sides of the bottom surface of the fixed ring are fixedly connected with a cylinder, the inner wall of the cylinder is inserted with a piston B, the piston B is connected with the inner wall of the cylinder through a spring B, and the side of the piston B corresponding to the rotating rod is fixedly connected with a T-shaped body. Rod sticking, the sticking rod is attached to the rotating rod close to the position, the side of the cylinder close to the slider is fixedly installed and communicated with a one-way valve with air intake function, and the one-way valve is fixedly connected and communicated with the slider through a connecting pipe, The back of the cylinder is fixedly installed and communicated with a one-way valve with air outlet function.

Preferably, the bottom surface of the piston A is fixedly connected with a fixed rod, and the bottom end of the fixed rod is fixedly connected with a piston C, the piston C is in a nested relationship with the inner wall of the sliding cylinder, and the top surface of the piston C corresponds to the opening of the connecting pipe on the sliding cylinder , the front and rear inner walls of the fixed table are provided with rectangular protrusions and are in a nested relationship with the slider, the front and rear inner walls of the bottom of the fixed table are provided with tooth grooves, the outer wall of the bottom of the slider is fixedly connected with a ring pad, and the outer wall of the ring pad is fixed at equal intervals Several conical blocks are connected, the outer wall of the annular pad is fitted with a card wheel, and the inner wall of the card wheel is provided with a hole corresponding to the position of the conical block and the conical block is located in it. The conical block on the back side of the annular pad and the tooth groove in the fixed table Engagement, the slide tube communicates with the annular pad through the air pipe.

Preferably, the top surfaces of the left and right sides of the fixed table are fixedly connected with support pads, the support pads are triangular prisms and the slopes of the two support pads correspond to each other, and air holes are provided inside the fixing ring, and the two ends of the air holes are respectively connected to the pressure pads. It communicates with the support pad, and the inclined surface of the support pad is fixedly connected with a fixed plate, and the fixed plate is fixedly connected with the fixed table through the hinge of the rotating shaft.

Preferably, a connecting pipe is fixedly connected to the back of the pressure pad, and the connecting pipe communicates with the suction groove. The end of the connecting pipe away from the pressure pad is fixedly connected and communicated with a suction cylinder. The side with the larger diameter of B faces to the right, and the inner wall of the circular table hole B is fitted with a circular table baffle B, which is connected to the inner wall of the circular table hole B through an elastic body. The insert ring of the sector.

Preferably, the right side of the suction cylinder is fixedly connected and communicated with the insertion cylinder, and the right side of the insertion cylinder is fixedly connected with a sieve plate.

Preferably, a hole is opened in the center of the sieve plate, and an intubation tube is sleeved in the hole, and a screen is provided on the inner wall of the intubation tube.

(3) Beneficial effects

Compared with the prior art, the present invention provides a dental chair head fixing device for dentists, which has the following beneficial effects:

1. The dental chair head fixing device used by the dentist, through the setting of the pressure pad, is adsorbed on the patient's head by negative pressure, so that the patient's head is guided by the pulling force every time the patient spits water, so that the patient does not need to You can lie down accurately at the center of the fixing ring by observing, which improves the treatment efficiency and avoids the collision between the patient's head and the fixing device, and every time it is pulled, it will drive the rotating rod to rotate to continue the negative pressure state and ensure the connection. stability.

2. The dentist uses the dental chair head fixing device. Through the setting of the conical block, after the patient lies down, the conical block will protrude from the card wheel to fix the position of the slider, thereby avoiding the sliding tube during the operation. The problem of sliding can improve the stability of fixing the patient's head, and after the patient's head is detached from the pressure on the pressure pad, the tapered block will automatically shrink, so that the slider can slide in the fixing table to adjust the position of the fixing ring. Improve the applicability of the device.

3. The dental chair head fixing device used by the dentist, through the setting of the support pad, after the patient puts pressure on the pressure pad, the fixing plate will further fix the patient's head by rotating, increasing the stability of fixing the patient's head, and After the patient gets up and releases the pressure on the pressure pad, the fixed plate automatically rotates to release the clamping of the patient's head, so as to avoid affecting the speed of the patient's getting up, and has the advantages of high efficiency and simple operation.

4. The head fixation device of the dental chair used by the dentist, through the setting of the suction cylinder, uses the conduction of the negative pressure in the suction groove to suck out the water in the patient's oral cavity or nasal cavity when the patient chokes water, etc. Thereby assisting the patient to get out of the state of choking on water, and the intensity and duration of the negative pressure can be further increased manually, which is conducive to achieving a better assisting effect.

5. The dental chair head fixing device used by the dentist, through the setting of the sieve plate, uses the sieve plate to block impurities, so as to avoid the problem that impurities are sucked into the connecting pipe, telescopic pipe or slide tube, which is difficult to clean, and also avoids connecting pipes, etc. The structure is blocked by impurities and other problems.

6. The dental chair head fixation device used by the dentist, through the setting of the intubation tube, when the water in the patient's oral cavity or nasal cavity is sucked out through the suction tube, it can be extended to the depth of the patient's oral cavity or nasal cavity by inserting the intubation tube. In some cases more effective removal is achieved.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the front sectional structure schematic diagram of the present invention;

Fig. 3 is the enlarged view of A place of Fig. 1 of the present invention;

Fig. 4 is the enlarged view of B place of Fig. 1 of the present invention;

Fig. 5 is an enlarged view at C of Fig. 1 of the present invention;

Fig. 6 is a side sectional structural schematic diagram of the fixing platform of the present invention.

In the figure: 1. Fixed table; 2. Sliding cylinder; 3. Piston A; 4. Telescopic tube; 5. Round table hole A; 6. Round table baffle A; 7. Spring A; 8. Fixed ring; 9. Pressure pad ;10, rotating groove; 11, torsion spring; 12, rotating rod; 13, bump; 14, cylinder; 15, piston B; 16, sticking rod; 17, spring B; 18, check valve; 19, connection Tube; 20, fixed rod; 21, piston C; 22, card wheel; 23, ring pad; 24, tapered block; 25, air hole; 26, support pad; 27, fixed plate; Cylinder; 30. Round table hole B; 31. Round table baffle B; 32. Elastic body; 33. Insert ring; 34. Insert tube; 35. Sieve plate; 36. Intubation tube; 37. Shaft hinge; 38. Suction groove 39, drawstring.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figure 1-6, a dental chair head fixing device for a dentist, including a fixed platform 1, the top surface of the fixed platform 1 is hollowed out, the inner wall of the fixed platform 1 is provided with a slider 2, and the outer wall of the slider 2 is fixedly connected There is a fixed ring 8. The shape of the fixed ring 8 is fan-shaped and the concave surface is upward. The inner wall of the sliding cylinder 2 is inserted with the piston A3. The top surface of the piston A3 is fixedly connected with the telescopic tube 4. The telescopic tube 4 runs through the sliding tube 2 and the fixed ring. 8 and part of the outer wall is located above the concave surface of the fixed ring 8, the center of the piston A3 and the telescopic tube 4 are hollowed out, the center of the concave surface of the fixed ring 8 is provided with a groove and inserted with a pressure pad 9, and the pressure pad 9 is a hollow semi-cylindrical body, the center of the top inner wall of the pressure pad 9 is fixedly connected with the top of the telescopic tube 4, the center of the top surface of the pressure pad 9 is provided with a suction groove 38, the telescopic tube 4 communicates with the suction groove 38, and the top inner wall of the telescopic tube 4 is provided with The circular table hole A5, the side with the larger diameter of the circular table hole A5 is downward, the inner wall of the circular table hole A5 is attached with the circular table baffle A6, the circular table baffle A6 is connected with the inner wall of the telescopic tube 4 through the spring A7, and the left and right sides of the fixed ring 8 are fixed. There is a rotating groove 10, the bottom surface of the rotating groove 10 is provided with a hole and the hole is connected with a rotating rod 12 by a torsion spring 11, the rotating rod 12 is fixedly connected to the outer wall of the rotating groove 10 and is wound with a stay cord 39, and the stay cord 39 is away from the rotating shaft. One end of the rod 12 runs through the fixed ring 8 and is fixedly connected with the bottom surface of the pressure pad 9, and the outer wall of the rotating rod 12 is equidistantly laid with protrusions 13 along the outer wall of the rotating groove 10, and the left and right sides of the bottom surface of the fixed ring 8 are fixedly connected with cylinders 14 , the inner wall of the cylinder 14 is inserted with a piston B15, the piston B15 is connected with the inner wall of the cylinder 14 through the spring B17, and the side of the piston B15 corresponding to the rotating rod 12 is fixedly connected with a sticking rod 16 in a T-shaped body, and the sticking rod 16 is close to the position The rotary rod 12 is attached, the cylinder 14 is fixedly installed on the side close to the sliding cylinder 2 and communicated with a one-way valve 18 with air intake function, and the one-way valve 18 is fixedly connected and communicated with the sliding cylinder 2 through a connecting pipe 19. The back of the cylinder 14 is fixedly installed and communicated with a one-way valve 18 with an air outlet function. First, the patient's head is attached to the pressure pad 9, and then the patient's head that is attached to the pressure pad 9 is lifted together with the pressure pad 9. When the pressure pad 9 is lifted, the pull rope 39 is pulled to move, and the movement of the pull rope 39 drives the rotating rod 12 to rotate. When the bump 13 rotates with the rotating rod 12 until it fits with the sticking rod 16, the sticking rod 16 is forced to push the piston B15 in the cylinder. 14, the air in the cylinder 14 is discharged through the one-way valve 18 on the back, and then the bump 13 rotates with the rotating rod 12 to break away from the sticking rod 16, and the spring B17 rebounds to drive the piston B15 to slide and pass through the connecting pipe 19 The connected one-way valve 18 draws air. When the one-way valve 18 connected to the connecting pipe 19 draws air, the air in the suction groove 38 will be drawn out through the slide cylinder 2, the piston A3, the telescopic tube 4 and the round table hole A5, so that the suction groove 38 to form a negative pressure state, use the negative pressure to connect the pressure pad 9 with the patient's head, and then place the patient's head and the pressure pad 9 on the fixing ring 8 together with the pressure pad 9, and the torsion spring 11 times The elastic drives the rotating rod 12 to rotate, and after that, every time the patient spits water, it will drive the pressure in the adsorption state. The pad 9 moves together, and continues the negative pressure state in the suction groove 38 by pulling the stay cord 39. When the patient spits out water and lies down to the fixed table 1, the pull of the stay cord 39 is controlled by the rebound of the torsion spring 11. The pressure pad 9 is guided so that the patient does not need to observe, and only needs to lie down following the pulling force to place the head on the center of the top surface of the fixing ring 8. Through the setting of the pressure pad 9, the negative pressure is used to adsorb on the patient's head, thereby Every time the patient spits water, the patient's head is guided by the pulling force, so that the patient can lie down accurately at the center of the fixing ring 8 without observation, which improves the treatment efficiency and avoids the collision between the patient's head and the fixing device , and each time 49 is pulled, it will drive the rotating rod 12 to rotate to continue the negative pressure state and ensure the stability of the connection.

The bottom surface of the piston A3 is fixedly connected with the fixed rod 20, and the bottom end of the fixed rod 20 is fixedly connected with the piston C21. The piston C21 is inserted into the inner wall of the sliding cylinder 2. The top surface of the piston C21 corresponds to the opening of the connecting pipe 19 on the sliding cylinder 2. The front and rear inner walls of the fixed table 1 are provided with rectangular protrusions and are inserted into the sliding cylinder 2. The front and rear inner walls of the bottom of the fixed table 1 are provided with tooth grooves. The outer wall of the pad 23 is fixedly connected with several conical blocks 24 at equal intervals, and the outer wall of the annular pad 23 is inserted with a card wheel 22, and the inner wall of the card wheel 22 is provided with a hole corresponding to the position of the conical block 24, and the conical block 24 is located therein. The tapered block 24 on the back side of 23 is engaged with the tooth grooves in the fixed table 1, and the sliding cylinder 2 communicates with the annular pad 23 through the trachea. When the patient lies down, the patient's head will exert pressure on the pressure pad 9, and the pressure pad 9 is After the force is compressed, it will drop and push the piston C21 down through the telescopic tube 4. After the piston C21 slides down, the air in the slider 2 will be injected into the ring pad 23, and the ring pad 23 will push the conical block 24 to extend from the card wheel 22 Out, the tapered block 24 protruding from the card wheel 22 is engaged with the tooth grooves on the front and rear sides of the fixed table 1, thereby fixing the position of the slider 2 and avoiding the sliding of the slider 2 during the treatment process. When the patient's head When no pressure is applied to the pressure pad 9, the pressure pad 9 rebounds to drive the piston C21 to withdraw the air in the annular pad 23, and the conical block 24 rebounds to break away from the engagement with the tooth groove on the front side of the fixed table 1. The position of the slider 2 on the fixed table 1 is used to change the position of the fixing ring 8. Through the setting of the conical block 24, after the patient lies down, the conical block 24 will protrude from the card wheel 22 to fix the position of the slider 2 , so as to avoid the sliding problem of the sliding cylinder 2 during the operation, improve the stability of fixing the patient's head, and after the patient's head breaks away from the pressure on the pressure pad 9, the tapered block 24 will automatically shrink, so that the sliding cylinder 2 can Sliding in the fixed table 1 adjusts the position of the fixed ring 8 to improve the applicability of the device.

The top surface of the left and right sides of the fixed table 1 is fixedly connected with a support pad 26, the support pad 26 is a triangular prism and the slopes of the two support pads 26 correspond to each other, and the inside of the fixed ring 8 is provided with an air hole 25, and the two ends of the air hole 25 are respectively connected to the The pressure pad 9 communicates with the support pad 26, and the inclined surface of the support pad 26 is fixedly connected with a fixed plate 27, and the fixed plate 27 is fixedly connected with the fixed table 1 through the hinge 37 of the rotating shaft. After the pressure pad 9 is pressed, the internal air will be injected through the air hole 25 Into the support pad 26, the support pad 26 is inflated and pushes the fixed plate 27 to rotate. After the fixed plate 27 rotates, it forms a clamping form with the fixed ring 8, thereby clamping the patient's head to the column, further improving the fixation of the patient's head. When the pressure pad 9 is not under pressure, the pressure pad 9 rebounds to draw back the air in the support pad 26, and the support pad 26 loses air and shrinks to drive the fixed plate 27 to rotate and reset. Through the setting of the support pad 26, the patient can After applying pressure to the pressure pad 9, the fixed plate 27 will further fix the patient's head by rotating, increasing the stability of fixing the patient's head, and after the patient gets up and breaks away from the pressure on the pressure pad 9, the fixed plate 27 will automatically rotate To get rid of the clamping of the patient's head and avoid affecting the speed of the patient's getting up, it has the advantages of high efficiency and simple operation.

The back of the pressure pad 9 is fixedly connected with a connecting pipe 28, and the connecting pipe 28 communicates with the suction groove 38. The end of the connecting pipe 28 away from the pressure pad 9 is fixedly connected and communicated with a suction cylinder 29. The right side of the suction cylinder 29 is provided with a circular table hole B30 , the side with the larger diameter of the circular table hole B30 faces to the right, the part of the inner wall of the circular table hole B30 is attached with the circular table baffle B31, the circular table baffle B31 is connected with the inner wall of the circular table hole B30 through the elastic body 32, and the top surface of the suction cylinder 29 is provided with a hole and the hole There is a fan-shaped insertion ring 33 inserted inside. When the patient’s mouth chokes water, etc., the insertion tube 34 corresponds to the patient’s mouth or nasal cavity, and then press the insertion ring 33 to push the circular platform baffle B31 to separate from the circular platform hole B30 In the fit state, the negative pressure in the suction groove 38 is pumped through the suction cylinder 29, thereby sucking out the moisture in the patient's mouth, helping the patient to get out of the state of choking water. When pumping water, the suction groove 38 can be closed and then the pressure pad can be held 9 moves up and down to increase the intensity and duration of the negative pressure. Through the setting of the suction tube 29, the conduction of the negative pressure in the suction groove 38 is utilized. Water, so as to assist the patient to get out of the state of choking, and the intensity and duration of the negative pressure can be further increased manually, which is beneficial to achieve a better assisting effect.

The right side of the suction cylinder 29 is fixedly connected and communicated with an insertion cylinder 34. The right side of the insertion cylinder 34 is fixedly connected with a sieve plate 35. Through the setting of the sieve plate 35, the sieve plate 35 is used to block impurities and prevent impurities from being sucked into the pipe. 28. The problem that it is difficult to clean the inside of the telescopic tube 4 or the sliding tube 2, and also avoid the problems that the connecting tube 28 and other structures are blocked by impurities.

The center of the sieve plate 35 is provided with a hole and a cannula 36 is inserted in the hole, and the inner wall of the cannula 36 is provided with a screen. Through the setting of the cannula 36, when the water in the patient's oral cavity or nasal cavity is extracted through the suction tube 29, it can pass The way of inserting the cannula 36 extends deep into the patient's mouth or nasal cavity, and in some cases achieves a more effective cleaning effect.

When in use, S1, first attach the patient's head to the pressure pad 9, and then lift the patient's head in the state of being attached to the pressure pad 9 together with the pressure pad 9, and pull the drawstring 39 to move when the pressure pad 9 is lifted. The movement of the pull cord 39 drives the rotating rod 12 to rotate, and when the protrusion 13 rotates with the rotating rod 12 until it fits with the sticking rod 16, the sticking rod 16 is forced to push the piston B15 to slide in the cylinder 14, and the air in the cylinder 14 passes through The one-way valve 18 on the back is discharged, and then the bump 13 rotates with the rotating rod 12 to break away from the rod 16, and the spring B17 rebounds to drive the piston B15 to slide and draw air through the one-way valve 18 connected to the connecting pipe 19. When the one-way valve 18 connected to the pipe 19 draws air, the air in the suction groove 38 will be drawn out through the slide cylinder 2, the piston A3, the telescopic tube 4 and the circular platform hole A5, so that a negative pressure state is formed in the suction groove 38, and the negative pressure is used to draw the air out of the suction groove 38. The pressure pad 9 is connected with the patient's head, and then the patient's head and the pressure pad 9 are placed on the fixed ring 8 together with the pressure pad 9, and the torsion spring 11 rebounds to drive the rotating rod 12 to rotate. When the patient spits water, the pressure pad 9 in the adsorption state will be driven to move together, and the negative pressure state in the suction groove 38 will be continued by pulling the pull cord 39. The rebound of the spring 11 guides the pressure pad 9 by pulling the pull cord 39, so that the patient does not need to observe, and only needs to lie down following the pulling force to place the head on the center of the top surface of the fixed ring 8.

S2, when the patient is lying down, the patient's head will put pressure on the pressure pad 9, and the pressure pad 9 will drop after being compressed and push the piston C21 to slide down through the telescopic tube 4, and the piston C21 will inject the air in the slide cylinder 2 after the slide into the ring pad 23, and the ring pad 23 is inflated to push the conical block 24 to protrude from the card wheel 22, and the conical block 24 protruding from the card wheel 22 meshes with the tooth grooves on the inner walls of the front and rear sides of the fixed table 1, Thereby, the position of the sliding cylinder 2 is fixed to avoid the sliding of the sliding cylinder 2 during the treatment process. When the patient’s head does not apply pressure to the pressure pad 9, the pressure pad 9 rebounds to drive the piston C21 to draw back the air in the annular pad 23, and the cone The shape block 24 rebounds and disengages from the engagement with the tooth grooves on the front side inner wall of the fixed platform 1. At this time, the position of the fixed ring 8 can be changed by sliding the sliding cylinder 2 at the position of the fixed platform 1.

S3, after the pressure pad 9 is pressurized, the internal air will be injected into the support pad 26 through the air hole 25, the support pad 26 will inflate and push the fixed plate 27 to rotate, and the fixed plate 27 will form a clamping form with the fixed ring 8 after the rotation, Thereby the patient's head is clamped to the column, further improving the stability of fixing the patient's head. When the pressure pad 9 is not under pressure, the pressure pad 9 rebounds to draw back the air in the support pad 26, and the support pad 26 loses air and shrinks Drive the fixed plate 27 to rotate and reset.

S4, when the patient's mouth is choked with water, etc., the insertion tube 34 corresponds to the patient's mouth or nasal cavity, and then press the insertion ring 33 to push the circular platform baffle B31 out of the fit state with the circular platform hole B30, and the suction groove 38 The negative pressure is drawn through the suction tube 29, thereby sucking out the moisture in the patient's mouth, and assisting the patient to get rid of the state of choking water. When pumping water, the intensity and intensity of the negative pressure can be increased by closing the suction groove 38 and then holding the pressure pad 9 to move up and down. duration.

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

Claims (6)

1. A dental chair head fixing device for a dentist, comprising a fixed table (1), the top surface of the fixed table (1) is in a hollow state, the inner wall of the fixed table (1) is provided with a sliding tube (2), and the sliding tube (2 ) is fixedly connected to the outer wall of the fixed ring (8), the shape of the fixed ring (8) is fan-shaped and the concave surface is upward, the inner wall of the sliding cylinder (2) is inserted with the piston A (3), and the top surface of the piston A (3) A telescopic tube (4) is fixedly connected, the telescopic tube (4) runs through the sliding cylinder (2) and the fixed ring (8) and part of the outer wall is located above the concave surface of the fixed ring (8), the piston A (3) and the telescopic tube (4) The center of each is in a hollow state, the center of the concave surface of the fixed ring (8) is provided with a groove and a pressure pad (9) is inserted therein, the pressure pad (9) is a hollow semi-cylindrical body, and the center of the inner wall of the top surface of the pressure pad (9) Fixedly connected with the top of the telescopic tube (4), it is characterized in that: the center of the top surface of the pressure pad (9) is provided with a suction groove (38), the telescopic tube (4) communicates with the suction groove (38), and the telescopic tube ( 4) There is a round table hole A(5) on the inner wall of the top surface, and the side with the larger diameter of the round table hole A(5) faces downward, and the inner wall of the round table hole A(5) is fitted with a round table baffle A(6). A(6) is connected to the inner wall of the telescopic tube (4) through the spring A(7). The left and right sides of the fixed ring (8) are provided with rotating grooves (10), and the bottom surface of the rotating groove (10) is provided with holes. Connected with rotating rod (12) by torsion spring (11), rotating rod (12) is positioned at the outer wall in rotating groove (10) and is fixedly connected and is wound with stay cord (39), and stay cord (39) is away from rotating rod (12) One end of one end passes through the fixed ring (8) and is fixedly connected with the bottom surface of the pressure pad (9). The outer wall of the rotating rod (12) is equidistantly laid with projections (13) along the outer wall of the rotating groove (10). The bottom surface of the fixed ring (8) The left and right sides are fixedly connected with a cylinder (14), and the inner wall of the cylinder (14) is inserted with a piston B (15). The piston B (15) is connected with the inner wall of the cylinder (14) through a spring B (17), and the piston B (15) One side corresponding to the rotating rod (12) is fixedly connected with a sticking rod (16), the sticking rod (16) is attached to the rotating rod (12) close to the position, and the side of the cylinder (14) is close to the sliding cylinder (2) Fixedly installed and communicated with a one-way valve (18) with air intake function, and the one-way valve (18) with air intake function is fixedly connected and communicated with the sliding sleeve (2) through a connecting pipe (19), and the cylinder ( 14) The back is fixedly installed and communicated with a one-way valve (18) with air outlet function. 2. A dental chair head fixing device for a dentist according to claim 1, characterized in that: the bottom surface of the piston A (3) is fixedly connected with a fixed rod (20), and the bottom end of the fixed rod (20) is fixed A piston C (21) is connected, and the piston C (21) is inserted into the inner wall of the sliding cylinder (2). The top surface of the piston C (21) corresponds to the opening of the connecting pipe (19) on the sliding cylinder (2). The front and rear inner walls of the fixed table (1) are provided with rectangular protrusions and are in a nested relationship with the sliding cylinder (2). Connected with annular pad (23), the outer wall of annular pad (23) is equidistantly fixedly connected with several tapered blocks (24), and the outer wall of annular pad (23) is sleeved with card wheel (22), and the inner wall of card wheel (22) corresponds to the cone The positions of the shaped blocks (24) are all provided with holes and the tapered blocks (24) are located therein, the tapered blocks (24) on the back side of the annular pad (23) are engaged with the tooth grooves in the fixed table (1), and the slide cylinder ( 2) It communicates with the annular pad (23) through the trachea. 3. A dental chair head fixing device for a dentist according to claim 1, characterized in that: the top surfaces of the left and right sides of the fixing platform (1) are fixedly connected with support pads (26), and the support pads ( 26) It is a triangular prism and the slopes of the two supporting pads (26) correspond to each other. The inside of the fixed ring (8) is provided with air holes (25), and the two ends of the air holes (25) are respectively connected to the pressure pad (9) and the supporting pad ( 26) is connected, and the inclined plane of support pad (26) is fixedly connected with fixed plate (27), and fixed plate (27) is fixedly connected with fixed table (1) by rotating shaft hinge (37). 4. A dental chair head fixing device for a dentist according to claim 2, characterized in that: the back of the pressure pad (9) is fixedly connected with a connecting pipe (28), and the connecting pipe (28) and the suction groove (38) is connected, and the end of the connecting pipe (28) away from the pressure pad (9) is fixedly connected and communicated with a suction cylinder (29). (30) The side with the larger diameter faces to the right, and the part of the inner wall of the circular table hole B (30) is attached with the circular table baffle B (31), and the circular table baffle B (31) passes through the elastic body (32) and the circular table hole B (30) The inner wall is connected, and the top surface of the suction tube (29) is provided with a hole and an insert ring (33) is inserted in the hole. 5. A dental chair head fixing device for a dentist according to claim 4, characterized in that: the right side of the suction cylinder (29) is fixedly connected and communicated with an insertion cylinder (34), and the insertion cylinder (34) ) The right side is fixedly connected with a sieve plate (35). 6. A dental chair head fixing device for a dentist according to claim 5, characterized in that: a hole is opened in the center of the sieve plate (35) and an intubation tube (36) is inserted in the hole, and the intubation tube (36) The inner wall is provided with a screen.

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