A head oral teaching model device

Abstract

The utility model discloses a head oral teaching model device. It comprises an oral model (2); the oral model (2) comprises an upper jaw model (3) and a lower jaw model (4); a first hinged part (301) is fixed to the lower part of the upper jaw model (3), and a second hinged part (401) is fixed to the upper part of the lower jaw model (4); a first gear groove (302) is arranged in the first hinged part (301), a second gear groove (402) is arranged in the second hinged part (401), and a limiting gear (6) is arranged in the second gear groove (402) and the first gear groove (302); a button (403) is arranged on the side of the second hinged part (401), and a return spring (303) is arranged on the inner side of the first gear groove (302). The utility model can make it convenient to adjust the opening angle of the upper jaw model and the lower jaw model, and can maintain the open state, and has the advantages of flexible use and convenient adjustment.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical model teaching instruments, in particular to a head and oral cavity teaching model device. Background Art

[0002] Medical teaching has very high requirements for operation and practicality, especially oral medical teaching. In the teaching process, learners are usually required to achieve good teaching results through real object observation and actual operation. Therefore, learning and observation through physical models is an indispensable part of the learning process. To this end, a Chinese utility model patent with authorization announcement number CN210983971U discloses a medical head oral teaching model, including a head model and an oral model, the head model is composed of an epidermal component and an air bag fixed on the epidermal component, the oral model is composed of a base and a tooth component, the upper and lower jaws of the tooth component are both equipped with tooth workpieces, the upper jaw is connected to an upper rotating rod at one end away from the tooth workpiece, the lower jaw is connected to a lower rotating rod at one end away from the tooth workpiece, the lower rotating rod is configured to be gear-shaped at one end far from the lower jaw, the lower rotating rods are connected to each other by a connecting rod, the upper rotating rod is connected to a limiting member at one end far from the upper jaw, a limiting hole is provided on the limiting member, a rotating shaft is sleeved in the limiting hole near the upper rotating rod, a driving gear is installed on the rotating shaft, the driving gear is meshed with the unconnected end of the lower rotating rod, and the connecting rod is sleeved on the limiting member. The utility model drives the driving gear to rotate by rotating the rotating shaft, so that the lower jaw can rotate freely while the upper jaw remains stationary. However, the rotating shaft does not have a locking device or a limiting device. Under the influence of the lower jaw's own weight or other factors, the lower jaw and the upper jaw are prone to rotation, making it impossible to maintain the opening angle between the lower jaw and the upper jaw, affecting the teaching quality. Utility Model Content

[0003] The purpose of the utility model is to provide a head oral teaching model device. The utility model can make the upper jaw model and the lower jaw model convenient to adjust their opening angles and maintain the open state, and has the advantages of flexible use and convenient adjustment.

[0004] The technical solution of the utility model is as follows: a head oral teaching model device comprises a head model, wherein an oral model is arranged at the lower part of the head model; the oral model comprises an upper jaw model and a lower jaw model; a first hinged part is fixed at the lower part of the upper jaw model, and a second hinged part is fixed at the upper part of the lower jaw model, and the first hinged part is hinged to the second hinged part; a first gear groove is arranged in the first hinged part, a second gear groove is arranged in the second hinged part, a through cavity is formed between the second gear groove and the first gear groove, and a limit gear is arranged in the through cavity; a button is arranged at the side of the second hinged part, a reset spring is arranged at the inner side of the first gear groove, and the two sides of the limit gear respectively conflict with the button and the reset spring.

[0005] The above-mentioned head oral teaching model device, the lower side of the head model is provided with a clamping device; the clamping device includes a moving platform arranged at the lower side of the head model, the lower part of the moving platform is provided with a clamping seat, and a screw rod is rotatably arranged in the clamping seat; a moving block is engaged on the screw rod, and the moving block is fixed to the bottom of the moving platform; a first clamping part is fixed to the lower side of the clamping seat, and a second clamping part is fixed to the lower side of the moving platform.

[0006] In the aforementioned head oral teaching model device, the depth of the first gear groove is greater than the width of the limiting gear, and the depth of the second gear groove is less than the width of the limiting gear.

[0007] In the aforementioned head-oral teaching model device, a connecting block is fixed to the lower side of the head model, and the connecting block is fixed on the moving platform.

[0008] In the aforementioned head oral teaching model device, a handle is provided at the end of the screw rod.

[0009] In the aforementioned head-oral teaching model device, the lower parts of the first clamping part and the second clamping part are respectively provided with anti-slip clamping blocks.

[0010] In the aforementioned head oral teaching model device, the first hinged portion and the second hinged portion are hinged by rivets.

[0011] The aforementioned head oral teaching model device, the outer side of the oral model is covered with a transparent silicone skin.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. When the utility model is in use, in the initial state, the two sides of the limit gear are respectively meshed with the first gear groove and the second gear groove due to the elastic force of the reset spring. At this time, the first hinge part cannot rotate relative to the second hinge part, that is, the lower jaw model cannot rotate relative to the upper jaw model; when the lower jaw model needs to be rotated, the button is pressed, and the limit gear is pushed into the first gear groove by the force of the button, and the reset spring is compressed until the limit gear is completely accommodated in the first gear groove. At this time, since the tooth groove of the second gear groove is no longer meshed with the teeth of the limit gear, the second hinge part can be rotated relative to the first hinge part, that is, the lower jaw model can be rotated relative to the upper jaw model; when the lower jaw model is rotated to the required position, the button is released to release the reset spring, and the limit gear returns to the position in the initial state again, so that the opening of the lower jaw model can be maintained; the utility model can make it convenient for the upper jaw model and the lower jaw model to adjust their opening angles and maintain the opened state, and has the advantages of flexible use and convenient adjustment.

[0014] 2. When the clamping device of the present invention is in use, the handle is turned to open the second clamping part, and the first clamping part and the second clamping part are clamped at the head of the dental operating table. Then, the handle is reversely turned to clamp the first clamping part and the second clamping part. The present invention can be clamped and installed at the head of the dental operating table, which facilitates the flexible use of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 is an exploded view a of the first hinge part and the second hinge part;

[0017] Figure 3 is an exploded view of the first hinge part and the second hinge part;

[0018] Figure 4 It is a structural schematic diagram of the clamping device.

[0019] The marks in the accompanying drawings are: 1-head model, 101-connecting block, 2-oral model, 201-silicone skin, 3-upper jaw model, 301-first hinged part, 302-first gear groove, 303-reset spring, 4-lower jaw model, 401-second hinged part, 402-second gear groove, 403-button, 5-clamping device, 501-moving platform, 502-clamping seat, 503-screw rod, 504-moving block, 505-first clamping part, 506-second clamping part, 507-handle, 508-anti-slip clamping block, 6-limiting gear, 601-through cavity, 7-rivet. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0021] Embodiment: Head oral teaching model device, the structure is as follows Figure 1 , Figure 2 and Figure 3As shown, it includes a head model 1, and an oral model 2 is provided at the lower part of the head model 1; the outer side of the oral model 2 is covered with a transparent silicone skin 201, and the silicone skin 201 is used to simulate human skin. The oral model 2 includes an upper jaw model 3 and a lower jaw model 4, and the upper jaw model 3 is fixed to the lower part of the head model 1, and the upper jaw model 3 is hinged with the lower jaw model 4. A cylindrical first hinge part 301 is fixed to the lower part of the upper jaw model 3, and a cylindrical second hinge part 401 is fixed to the upper part of the lower jaw model 4, and the first hinge part 301 is hinged with the second hinge part 401, and the first hinge part 301 and the second hinge part 401 are hinged by a rivet 7. A first gear groove 302 is formed in the first hinged part 301, and a second gear groove 402 is formed in the second hinged part 401. A through cavity 601 is formed between the second gear groove 402 and the first gear groove 302. A limit gear 6 is provided in the through cavity 601 for limiting the rotation of the lower jaw model 4 relative to the upper jaw model 3; the teeth of the limit gear 6 are meshed with the tooth grooves of the first gear groove 302 and the second gear groove 402; the depth of the first gear groove 302 is greater than the width of the limit gear 6, and the depth of the second gear groove 402 is less than the width of the limit gear 6; when the limit gear 6 contacts the inner wall of the second gear groove 402, the other side of the limit gear 6 can also be meshed with the first gear groove 302. A button 403 is provided on the side of the second hinged part 401, and the side of the button 403 is inserted into the second hinged part 401. A reset spring 303 is provided on the inner side of the first gear groove 302, and the two sides of the limit gear 6 are respectively in conflict with the button 403 and the reset spring 303. When the utility model is in use, in the initial state, the two sides of the limit gear 6 are respectively meshed with the first gear groove 302 and the second gear groove 402 due to the elastic force of the reset spring 303. At this time, the first hinged part 301 cannot rotate relative to the second hinged part 401, that is, the lower jaw model 4 cannot rotate relative to the upper jaw model 3; when the lower jaw model 4 needs to be rotated, the button 403 is pressed, and the limit gear 6 is pushed into the first gear groove 302 by the force of the button 403, and the reset spring 303 is compressed until the limit gear 6 is completely accommodated in the first gear groove 302. At this time, the tooth groove of the second gear groove 402 is no longer meshed with the teeth of the limit gear 6. The second hinge part 401 can be rotated relative to the first hinge part 301, that is, the mandibular model 4 can be rotated relative to the upper jaw model 3; when the mandibular model 4 is rotated to the required position, the button 403 is released to release the reset spring 303, and the limit gear 6 returns to the position in the initial state again, so that the opening of the mandibular model 4 can be maintained; in addition, the utility model can be clamped at the head of the dentist's operating bed through the clamping device 5; the limit gear 6 of the utility model can keep the mandibular model 4 in a closed or open state; in addition, the clamping device 5 can facilitate the flexible use of the utility model; it has the advantages of flexible use and convenient adjustment.

[0022] The structure of the clamping device 5 is as follows: Figure 4 As shown, the lower side of the head model 1 is provided with a clamping device 5; the clamping device 5 includes a moving platform 501 arranged at the lower side of the head model 1, and a connecting block 101 is fixed to the lower side of the head model 1, and the connecting block 101 is fixed to the moving platform 501. A clamping seat 502 is provided at the lower part of the moving platform 501, and a screw rod 503 is rotatably provided in the clamping seat 502; a handle 507 is provided at the end of the screw rod 503. A moving block 504 is meshed on the screw rod 503, and the moving block 504 is fixed to the bottom of the moving platform 501; a first clamping portion 505 is fixed to the lower side of the clamping seat 502, and a second clamping portion 506 is fixed to the lower side of the moving platform 501. The lower parts of the first clamping part 505 and the second clamping part 506 are respectively provided with anti-skid clamping blocks 508, and the provision of the anti-skid clamping blocks 508 can prevent the first clamping part 505 and the second clamping part 506 from sliding. The screw rod 503 can be rotated by turning the handle 507, so that the moving block 504 engaged on the screw rod 503 can move, and the movement of the moving block 504 drives the moving platform 501 to move, thereby driving the second clamping part 506 to move relative to the first clamping part 505. When in use, the handle 507 is turned to open the second clamping part 506, and the first clamping part 505 and the second clamping part 506 are clamped at the head of the dental operating bed, and then the handle 507 is reversed to clamp the first clamping part 505 and the second clamping part 506, so that the utility model can be clamped and installed at the head of the dental operating bed, which can facilitate the flexible use of the utility model.

[0023] Working principle: When the utility model is in use, in the initial state, the two sides of the limit gear 6 are respectively meshed with the first gear groove 302 and the second gear groove 402 due to the elastic force of the return spring 303. At this time, the first hinge part 301 cannot rotate relative to the second hinge part 401, that is, the mandibular model 4 cannot rotate relative to the upper jaw model 3; when the mandibular model 4 needs to be rotated, the button 403 is pressed, and the limit gear 6 is pushed into the first gear groove 302 by the force of the button 403, and the return spring 303 is compressed until the limit gear 6 is completely accommodated in the first gear groove 302. At this time, due to The tooth groove of the second gear groove 402 is no longer meshed with the teeth of the limiting gear 6, and the second hinged part 401 can be rotated relative to the first hinged part 301, that is, the mandibular model 4 can be rotated relative to the upper mandibular model 3; when the mandibular model 4 is rotated to the required position, the button 403 is released to release the reset spring 303, and the limiting gear 6 returns to the position in the initial state again, so that the opening of the mandibular model 4 can be maintained; the utility model can make it convenient to adjust the opening angle of the upper mandibular model 3 and the mandibular model 4, and can maintain the open state, and has the advantages of flexible use and convenient adjustment.

[0024] The above embodiments only express the implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. In this embodiment, up, down, left, right, front, and back only represent their relative positions and do not represent their absolute positions. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A head and oral cavity teaching model device, comprising a head model (1), wherein a mouth model (2) is provided at the lower part of the head model (1); the mouth model (2) comprises an upper jaw model (3) and a lower jaw model (4); the characteristics are as follows: A first hinged portion (301) is fixed at the lower part of the upper jaw model (3), and a second hinged portion (401) is fixed at the upper part of the lower jaw model (4), wherein the first hinged portion (301) and the second hinged portion (401) are hingedly connected; a first gear groove (302) is provided in the first hinged portion (301), and a second gear groove (402) is provided in the second hinged portion (401); a through cavity (601) is formed between the second gear groove (402) and the first gear groove (302), and a limit gear (6) is provided in the through cavity (601); a button (403) is provided on the side of the second hinged portion (401), and a return spring (303) is provided on the inner side of the first gear groove (302), and two sides of the limit gear (6) are respectively in contact with the button (403) and the return spring (303).

2. The head-oral teaching model device according to claim 1, characterized in that: A clamping device (5) is provided at the lower side of the head model (1); the clamping device (5) comprises a moving platform (501) arranged at the lower side of the head model (1); a clamping seat (502) is provided at the lower side of the moving platform (501); a screw rod (503) is rotatably provided inside the clamping seat (502); a moving block (504) is meshed with the screw rod (503), and the moving block (504) is fixed to the bottom of the moving platform (501); a first clamping portion (505) is fixed to the lower side of the clamping seat (502), and a second clamping portion (506) is fixed to the lower side of the moving platform (501).

3. The head-oral teaching model device according to claim 1, characterized in that: The depth of the first gear groove (302) is greater than the width of the limiting gear (6), and the depth of the second gear groove (402) is less than the width of the limiting gear (6).

4. The head-oral teaching model device according to claim 2, characterized in that: A connection block (101) is fixed to the lower side of the head model (1), and the connection block (101) is fixed on the moving platform (501).

5. The head-oral teaching model device according to claim 2, characterized in that: A handle (507) is provided at the end of the screw rod (503).

6. The head-oral teaching model device according to claim 2, characterized in that: Anti-slip clamping blocks (508) are respectively provided at the lower parts of the first clamping part (505) and the second clamping part (506).

7. The head-oral teaching model device according to claim 1, characterized in that: The first hinged portion (301) and the second hinged portion (401) are hingedly connected via a rivet (7).

8. The head-oral teaching model device according to claim 1, characterized in that: The outer side of the oral cavity model (2) is covered with a transparent silicone skin (201).

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