An upper jaw movement imitation component and a bionic oral cavity device

Abstract

The present invention provides a component simulating the movement of the upper jaw and a bionic oral device. The component simulating the movement of the upper jaw includes an upper jaw component and a first crank-slider mechanism for controlling the up-and-down movement of the upper jaw component. The first crank-slider mechanism includes a first eccentric wheel, a first motor for driving the rotation of the first eccentric wheel, a first connecting rod, and a first sliding rod. The upper end of the first connecting rod is rotatably connected to the first eccentric wheel, and the lower end of the first connecting rod is rotatably connected to the upper end of the first sliding rod. The component simulating the movement of the upper jaw further includes a first fixing plate. The first sliding rod is slidably mounted on the first fixing plate, and the lower end of the first sliding rod can drive the upper jaw component to move up and down.

Description

Technical Field

[0001] The present invention relates to the technical field of oral bionic machinery, and particularly relates to an upper jaw movement simulation component and a bionic oral device. Background Art

[0002] Oral chewing movement is part of mandibular movement, and its movement form is relatively complex. Under the conditions of complete and symmetrical dentition, coordinated dental cusps, equal functional potential, and unobstructed occlusal movement, it should be multi-directional bilateral alternating chewing. Generally, chewing movement is summarized into three basic stages: cutting, crushing, and grinding.

[0003] Crushing and grinding: are carried out through the posterior tooth movement cycle. Crushing and grinding are two stages that cannot be completely separated and are both carried out by posterior teeth. Crushing refers to vertically crushing food. Grinding requires accompanied lateral movement of the mandible. The cycle starts with the mandible moving downward and outward (towards the working side) from the intercuspal position, then rising, so that the homologous cusps of the posterior teeth on the working side of the upper and lower jaws face each other. Then, the buccal inclined surface of the buccal cusp of the posterior teeth of the mandible slides lingually along the lingual inclined surface of the buccal cusp of the posterior teeth of the maxilla and returns to the intercuspal position. The lingual inclined surface of the buccal cusp of the posterior teeth of the mandible continues to slide lingually along the buccal inclined surface of the lingual cusp of the posterior teeth of the upper jaw from the central fossa and separates at about half of it. This sliding process has the function of grinding food. After the buccal cusp of the posterior teeth of the mandible separates from the lingual cusp of the posterior teeth of the maxilla, the above-mentioned chewing movement is repeated towards the buccal side, and so on in a cycle, which is called the (occlusal) movement cycle of the posterior teeth. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an upper jaw movement simulation component and a bionic oral device.

[0005] To solve the above technical problem, the present invention provides an upper jaw movement simulation component. The upper jaw movement simulation component includes an upper jaw component and a first crank-slider mechanism for controlling the up and down movement of the upper jaw component. The first crank-slider mechanism includes a first eccentric wheel, a first motor for driving the first eccentric wheel to rotate, a first connecting rod, and a first sliding rod. The upper end of the first connecting rod is rotatably connected to the first eccentric wheel, and the lower end of the first connecting rod is rotatably connected to the upper end of the first sliding rod. The upper jaw movement simulation component further includes a first fixing plate. The first sliding rod is slidably mounted on the first fixing plate up and down, and the lower end of the first sliding rod can drive the upper jaw component to move up and down.

[0006] Preferably, the upper jaw movement simulation component further includes a first induction piece mounted on the first eccentric wheel and a first inductor corresponding to the first induction piece.

[0007] Preferably, a pressure sensor is further provided between the lower end of the first sliding rod and the upper jaw component.

[0008] Preferably, a slider is further provided on the upper jaw assembly. The slider is slidably connected to the upper side of the upper jaw assembly in the left-right direction, and the lower end of the first sliding rod is fixedly connected to the slider.

[0009] Preferably, the upper jaw assembly includes an upper jaw body and an upper cover provided on the upper jaw body. The upper jaw body has a cavity with an upward opening, and an elastic seal is provided at the opening of the cavity. The upper cover covers the opening of the cavity.

[0010] Preferably, upper teeth are installed under the upper jaw body. Two upper tooth installation grooves extending in the front-rear direction are provided on the lower side of the upper jaw body. The left and right sides of the upper tooth installation grooves have card edges extending in the front-rear direction. The upper teeth are provided with card slots that cooperate with the card edges, and the upper teeth are detachably installed in the upper tooth installation grooves through the card slots.

[0011] This application also provides a bionic oral device, and the bionic oral device includes the above-mentioned bionic upper jaw motion assembly.

[0012] Preferably, the bionic oral device further includes a lower jaw assembly. The lower jaw assembly includes a bottom wall, two side walls arranged on the left and right, and a rear wall located behind the two side walls. Two rows of lower teeth corresponding to the upper teeth are provided on the bottom wall. The upper jaw assembly can be inserted into the lower jaw assembly under the drive of the first crank-slider mechanism, so that the upper teeth and the lower teeth contact and squeeze each other.

[0013] Preferably, a first convex portion is provided on one of the left and right sides of the upper jaw body. A second convex portion that cooperates with the first convex portion is provided on one of the side walls of the lower jaw assembly. An elastic member is provided on the other side wall of the lower jaw assembly. The elastic member can apply a thrust to the upper jaw assembly. During the downward movement of the upper jaw assembly, the second convex portion can squeeze the first convex portion, so that the upper jaw assembly overcomes the thrust of the elastic member and moves toward the side close to the elastic member.

[0014] Preferably, the first convex portion is a strip-shaped convex rib with wedge-shaped surfaces on the upper and lower sides, and the second convex portion is a strip-shaped convex rib with an arc-shaped cross section.

[0015] While moving up and down, the bionic upper jaw motion assembly of the present invention can also move left and right to complete the crushing and grinding of the object, truly simulating the crushing process of food in the oral cavity. The bionic upper jaw motion assembly of this application is provided with a pressure sensor. According to the pressure measured by the pressure sensor, the pressure of the upper jaw assembly pressing downward can be controlled, the chewing force can be well controlled, and the hardness, elasticity and other indexes of food can be objectively evaluated. Brief Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the bionic oral device of the present application;

[0017] Figure 2 is a schematic structural diagram of the upper jaw motion component of the present application;

[0018] Figure 3 is a schematic side structural diagram of the upper jaw motion component of the present application;

[0019] Figure 4 is a schematic structural diagram of the upper jaw component of the present application;

[0020] Figure 5 is a schematic structural diagram of the lower jaw component of the present application;

[0021] Figure 6 is a schematic structural diagram of the upper jaw component and the lower jaw component of the present application;

[0022] Figure 7 is a schematic structural diagram of the upper jaw component and the lower jaw component of the present application;

[0023] Figure 8 is a schematic diagram of the movement trajectories of the upper teeth and the lower teeth of the present application;

[0024] Figure 9 is a schematic structural diagram of the tongue-like motion component of the present application;

[0025] Figure 10 is a schematic structural diagram of the buccal motion component of the present application;

[0026] Figure 11 is a schematic structural diagram of the food delivery motion component of the present application;

[0027] Figure 12 is a schematic structural diagram of the saliva injection component of the present application;

[0028] Figure 13 is a schematic structural diagram of the blocking component of the present application.

[0029] Wherein: 1. Upper jaw motion component; 2. Buccal motion component; 3. Tongue-like motion component; 4. Food delivery motion component; 5. Saliva injection component; 6. Lower jaw component; 7. Blocking component;

[0030] 11. First eccentric wheel; 12. First connecting rod; 14. First sliding rod; 15. Pressure sensor; 16. Slide block; 17. Upper jaw component; 18. Upper teeth; 19. First fixing plate; 110. First sensing piece; 111. First sensor; 112. First motor;

[0031] 171. Upper jaw body; 172. Upper cover; 173. Elastic seal; 174. Cavity; 175. Circulating water interface; 176. First protrusion; 177. First through hole; 178. Second through hole.

[0032] 6. Lower jaw assembly; 61. Buccal membrane; 62. Tongue membrane; 63. Lower teeth; 64. Second protrusion; 65. Elastic member; 66. Discharge port.

[0033] 31. Third motor; 32. Third eccentric wheel; 33. Third connecting rod; 34. Third sliding rod; 35. Third fixing plate; 36. Third eccentric shaft; 37. Tongue-like top block; 38. Third sensor; 39. Third sensing piece.

[0034] 21. Second eccentric wheel; 22. Second connecting rod; 23. Second sliding rod; 24. Second fixing rod; 25. Buccal-like top block; 26. Second sensing piece; 27. Second sensor.

[0035] 41. Food delivery channel; 42. Food delivery top block; 43. Rack; 44. Push rod; 45. Connecting block; 46. Gear; 47. Fourth motor; 48. Fourth fixing plate.

[0036] 51. Syringe; 52. Water bath; 53. Heat coil. Detailed implementation mode

[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it, but the embodiments cited are not intended to limit the present invention.

[0038] As Figure 1 shown, the bionic oral device of the present application includes a lower jaw assembly 6, an upper jaw imitation movement assembly 1 arranged on the upper side of the lower jaw assembly 6, buccal imitation movement assemblies 2 arranged on the left and right sides of the lower jaw assembly 6, a tongue imitation movement assembly arranged on the lower side of the lower jaw assembly 6, a food delivery movement assembly 4 arranged on the front side of the lower jaw assembly 6, a blocking assembly 7 arranged on the rear side of the lower jaw assembly 6, and a saliva injection assembly 5.

[0039] As Figure 2 and 3As shown, the upper jaw motion component 1 of the present application, the upper jaw motion component 1 includes an upper jaw component 17 and a first crank-slider mechanism for controlling the up and down movement of the upper jaw component 17. The first crank-slider mechanism includes a first eccentric wheel 11, a first motor 112 for driving the first eccentric wheel 11 to rotate, a first connecting rod 12, and a first sliding rod 14. The upper end of the first connecting rod 12 is rotatably connected to the first eccentric wheel 11, and the lower end of the first connecting rod 12 is rotatably connected to the upper end of the first sliding rod 14. The upper jaw motion component 1 further includes a first fixing plate 19, and the first sliding rod 14 is slidably mounted on the first fixing plate 19. The lower end of the first sliding rod 14 can drive the upper jaw component 17 to move up and down.

[0040] The upper jaw motion component 1 further includes a first sensing piece 110 mounted on the first eccentric wheel 11 and a first sensor 111 corresponding to the first sensing piece 110. When the first eccentric wheel 11 rotates one circle, the first sensing piece 110 passes by the first sensor 111 once. When the first sensor 111 senses the first sensing piece 110, it can send a control signal to the first motor to control the first motor to pause slightly, imitating the rhythm during oral chewing.

[0041] A pressure sensor 15 is further provided between the lower end of the first sliding rod 14 and the upper jaw component 17.

[0042] A slider 16 is further provided on the upper jaw component 17. The slider 16 is slidably connected to the upper side of the upper jaw component 17, and the lower end of the first sliding rod 14 is fixedly connected to the slider 16.

[0043] As Figure 4 As shown, the upper jaw component 17 includes an upper jaw body 171 and an upper cover 172 provided on the upper jaw body 171. The upper jaw body 171 has a cavity 174 with an upward opening. An elastic seal 173 is provided at the opening of the cavity 174. The upper cover 172 covers the opening of the cavity 174. The elastic seal 173 serves as a seal. Two circulating water interfaces 175 for connecting the cavity 174 with external circulating water are further provided on the upper jaw body 171.

[0044] The upper teeth 18 are installed below the upper jaw body 171. In a preferred embodiment, two upper tooth mounting grooves extending in the front-rear direction are provided on the lower side of the upper jaw body 171. The left and right sides of the upper tooth mounting grooves have clamping edges extending in the front-rear direction. A clamping groove matching the clamping edge is provided on the upper teeth 18. The upper teeth 18 are detachably installed in the upper tooth mounting grooves through the clamping grooves. This assembly method can separately remove the upper teeth 18, which is convenient for disassembly and assembly and facilitates the cleaning of the upper jaw.

[0045] The upper jaw body 171 is further provided with a first through hole 177 and a second through hole 178. The first through hole 177 is used to inject saliva into the oral cavity, and the second through hole 178 is used to detect the odor in the oral cavity.

[0046] As Figure 5 shown, the lower jaw assembly 6 of the present application includes a bottom wall, two side walls arranged on the left and right, and a rear wall located behind the two side walls. Two rows of lower teeth 63 corresponding to the upper teeth 18 are provided on the bottom wall. The upper jaw assembly 17 can be inserted into the lower jaw assembly 6 under the drive of the first crank-slider mechanism, so that the upper teeth 18 and the lower teeth 63 are in contact and extrusion with each other. Double cheek membranes 61 are provided on the two side walls of the lower jaw assembly 6, and a tongue membrane 62 is provided on the bottom wall. A row of outlets 67 is provided on the rear wall of the lower jaw assembly 6.

[0047] The double cheek membranes 61 and the tongue membrane 62 are made of transparent elastic membranes, which is convenient for experimenters to observe the food crushing process inside the oral cavity.

[0048] The inner surface of the double cheek membrane 61 is attached to the inner surface of the two side walls of the lower jaw assembly to form a smooth surface. The tongue membrane 62 is attached to the inner surface of the bottom wall of the lower jaw assembly to form a smooth surface. In this lower jaw assembly, since the two side walls and the bottom wall are all smooth surfaces, it is more convenient for cleaning.

[0049] One of the left and right sides of the upper jaw body 171 is provided with a first convex portion 176. A second convex portion 64 matching the first convex portion 176 is provided on one of the side walls of the lower jaw assembly 6. An elastic member 65 is provided on the other side wall of the lower jaw assembly 6. The elastic member 65 can exert a thrust on the upper jaw assembly 17. During the downward movement of the upper jaw assembly 17, the second convex portion 64 can squeeze the first convex portion 176, so that the upper jaw assembly 17 overcomes the thrust of the elastic member 65 and moves toward the side close to the elastic member 65.

[0050] As Figure 6 and8 As shown, in a preferred embodiment, the first protrusion 176 is a strip-shaped ridge with wedge-shaped upper and lower sides, and the second protrusion 64 is a strip-shaped ridge with an arc-shaped cross section. When the upper jaw component 17 moves up and down relative to the lower jaw component 6, the first protrusion 176 and the second protrusion 64 squeeze each other and move toward the side close to the elastic component 65 to overcome the elastic force of the elastic member 65. When the first protrusion 176 and the second protrusion 64 are offset from each other, the upper jaw component 17 moves toward the side away from the elastic member 65 under the thrust of the elastic member 65, so that the upper jaw component 17 can swing left and right while moving up and down. Figure 8 As shown, the movement between the upper teeth 18 and the lower teeth 63 presents an elliptical shape, and the left and right friction of the upper and lower teeth 63 crushes the food, simulating the process of crushing and grinding the food in the oral cavity.

[0051] like Figure 10 As shown, the imitation cheek movement component 2 of the present application, the imitation cheek movement component 2 includes a second crank slider mechanism, an imitation cheek top block 25 driven by the second crank slider mechanism, the second crank slider mechanism includes a second eccentric wheel 21, a second motor that drives the second eccentric wheel 21 to rotate, a second connecting rod 22, and a second sliding rod 23, one end of the second connecting rod 22 is rotatably connected to the second eccentric wheel 21, and the other end of the second connecting rod 22 is rotatably connected to one end of the second sliding rod 23, the imitation cheek movement component 2 also includes a second fixed plate, the second sliding rod 23 is slidably installed on the second fixed plate, and the end of the second sliding rod 23 can drive the imitation cheek top block 25 to push the cheek film 61.

[0052] The cheek movement simulation component 2 also includes a second sensing sheet 26 installed on the second eccentric wheel 21 and a second sensor 27 corresponding to the second sensing sheet 26. When the second eccentric wheel 21 rotates one circle, the second sensing sheet 26 passes through the second sensor 27 once. When the second sensor 27 senses the second sensing sheet 26, it can send a control signal to the second motor to control the second motor to pause slightly, thereby imitating the movement pattern of the cheeks during chewing.

[0053] like Figure 9As shown in the figure, the tongue-like movement component 3 of the present application, the tongue-like movement component 3 includes a third crank-slider mechanism and a tongue-like top block 37 driven by the third crank-slider mechanism. The third crank-slider mechanism includes a third eccentric wheel 32, a third motor 31 for driving the third eccentric wheel 32 to rotate, a third connecting rod 33, and a third sliding rod 34. One end of the third connecting rod 33 is rotatably connected to the third eccentric wheel 32, and the other end of the third connecting rod 33 is rotatably connected to one end of the third sliding rod 34. The tongue-like movement component further includes a third fixing plate 35. The third sliding rod 34 is slidably installed on the third fixing plate 35, and the end of the third sliding rod 34 can drive the tongue-like top block 37 to push the tongue film.

[0054] The tongue-like movement component further includes a third induction piece 39 installed on the third eccentric wheel 32 and a third inductor 38 corresponding to the third induction piece 39. When the third eccentric wheel 32 rotates one circle, the third induction piece 39 passes by the third inductor 38 once. When the third inductor 38 senses the third induction piece 39, it can send a control signal to the third motor to control the third motor to pause slightly, imitating the movement law of the tongue during oral chewing.

[0055] As Figure 11 As shown in the figure, the food delivery movement component 4 of the present application, the food delivery movement component 4 includes a food delivery channel 41. The food delivery channel 41 is connected to the front side of the lower jaw component 6. A food delivery top block 42 is arranged in the food delivery channel 41. The food delivery top block 42 is used to push the food in the food delivery channel 41 into the lower jaw component 6. The food delivery movement component 4 further includes a driving component for driving the food delivery top block 42 to move.

[0056] The driving component includes a rack 43 and a push rod 44 connected to the food delivery top block 42. The rack 43 and the push rod 44 are arranged in parallel. The driving component further includes a fourth motor 47 and a gear 46 driven by the fourth motor 47. The gear 46 meshes with the rack 43.

[0057] The food delivery movement component 4 further includes a vertically arranged fourth fixing plate 48. The rack 43 and the push rod 44 slidably pass through the fourth fixing plate 48, and the ends of the rack 43 and the push rod 44 are fixedly connected by a connecting block 45.

[0058] As Figure 12As shown in the figure, the saliva injection assembly 5 of the present application includes an injection cylinder 51, a water bath 52 connected to the injection cylinder 51, and a heating coil. The water bath 52 is connected to the circulating water connection port of the upper jaw assembly 17 to form a water circulation. The heating coil is used to heat the liquid in the water bath 52. The heating coil can heat the liquid in the water bath 52 to about 37°C to mimic human saliva. The saliva injection assembly 5 further includes a fifth drive motor for transporting the liquid in the water bath 52 into the upper jaw assembly 17.

[0059] The blocking assembly 7 includes a blocking piece for blocking the discharge port 66 and a fifth motor for driving the blocking piece to move back and forth. When the oral cavity makes a chewing motion, the blocking piece blocks the discharge port to prevent food in the oral cavity from flowing out. When the chewing motion is completed, the blocking piece is driven by the fifth motor to leave the discharge port 66. The food feeding top block 42 ejects the food in the oral cavity from the discharge port.

[0060] The working process of the bionic oral device of the present application is as follows:

[0061] The first step: Find the origin

[0062] 1. Return the sensing piece in the present application to the sensor to find the origin. Heat the liquid in the water bath 52 to 37°C. The water bath 52 is connected to the upper jaw assembly 17 to form a water circulation system.

[0063] 2. The second crank-slider mechanism drives the bionic cheek top block 25 so that the bionic cheek top block 25 contacts the cheek film 61.

[0064] 3. The first crank-slider mechanism drives the upper jaw assembly 17 to move away from the lower jaw assembly 6 to open the upper part of the oral cavity.

[0065] 4. The third crank-slider mechanism drives the bionic tongue top block 37 so that the bionic tongue top block 37 contacts the tongue film.

[0066] 5. The fourth motor 47 drives the food feeding top block 42 to leave the lower jaw assembly 6 by 30 mm to open the front side of the oral cavity and leave space for food.

[0067] 6. The fifth motor drives the blocking piece to block the discharge port 66 of the lower jaw assembly.

[0068] The second step: Feed food

[0069] 1. Put about 30 - 50 g of food (solid or liquid) into the food feeding channel 41.

[0070] 2. Turn on the fourth motor 47, and the food feeding top block 42 pushes the food into the lower jaw assembly 6. Return to the original position.

[0071] Part Three: Broken Food

[0072] 1. The third crank-slider mechanism drives the tongue-like top block 37 to press against the tongue membrane and move upward about 30 mm. The tongue membrane containing the food bulges, causing the food to slide to both sides and enter the range of tooth chewing. Then, the third crank-slider mechanism drives the tongue-like top block 37 to move downward about 30 mm and return to the origin point.

[0073] 2. The second crank-slider mechanism drives the double-cheek-like top block, causing the double-cheek-like top block 25 to leave the double-cheek membrane 61.

[0074] 3. The saliva injection component 5 injects saliva into the upper jaw component 17.

[0075] 4. The first crank-slider mechanism drives the upper jaw component 17 to move downward 30 mm and then upward 30 mm. The upper jaw reciprocates up and down to break the food.

[0076] 5. Repeat the above steps 1-4 until the food is completely broken.

[0077] Fourth Step: Emptying

[0078] 1. The second crank-slider mechanism drives the double-cheek-like top block until it stops moving when the double-cheek membrane 61 fits against the teeth, squeezing out the food between the double-cheek membrane 61 and the teeth and causing the food to flow out from the throat area.

[0079] 2. The third crank-slider mechanism drives the tongue-like top block 37 to fit against the tongue membrane.

[0080] 3. The fifth motor drives the blocking piece away from the discharge port 66;

[0081] 4. The fourth motor 47 drives the food delivery top block 42 to move forward about 100 mm, causing all the food in the oral cavity to be completely pushed out.

[0082] 5. Repeat the above four steps to consume the food used in the experiment.

[0083] Fifth Step: Cleaning

[0084] 1. The first crank-slider mechanism drives the upper jaw component 17 to move upward until the upper jaw reaches the uppermost position, leaving space for the upper jaw component 17 and the lower jaw component 6 to be removed.

[0085] 2. The second crank-slider mechanism drives the double-cheek-like top block to the farthest position away from the double-cheek membrane 61, leaving space for the upper jaw component 17 and the lower jaw component 6 to be removed.

[0086] 3. Remove the food delivery movement component 4.

[0087] 4. Take out the upper jaw component 17 and the lower jaw component 6, and slide out the teeth on the upper jaw component 17 and the lower jaw component 6 one by one to facilitate cleaning the oral cavity and teeth.

[0088] The beneficial effects of the bionic oral device of the present application are as follows:

[0089] 1. The bionic upper jaw movement component 1 of the present application can move left and right while moving up and down to complete the crushing and grinding of objects, truly simulating the crushing process of food in the oral cavity.

[0090] 2. The bionic upper jaw movement component 1 of the present application is provided with a pressure sensor 15. According to the pressure measured by the pressure sensor 15, the pressure of the upper jaw component 17 pressing down can be controlled, so as to well control the chewing force and objectively evaluate indexes such as food hardness and elasticity.

[0091] 3. The lower jaw component 6 of the present application is made of a transparent material, which is convenient for experimenters to observe the food crushing process inside the oral cavity.

[0092] 4. The lower jaw component 6 of the present application has double cheek membranes 61 and tongue membranes made of elastic transparent materials, which can simulate the double cheeks and tongue of the oral cavity in cooperation with the bionic double cheek movement component 2 and the bionic tongue movement component.

[0093] 5. The saliva injection component 5 of the present application can inject a liquid at about 37 °C into the upper jaw component 17 to make the temperature of the oral cavity similar to the real human body temperature.

[0094] 6. The teeth of the present application can slide into the card slots, which are not only firm and reliable, but also convenient for disassembly, assembly and cleaning.

[0095] The above-mentioned embodiments are only preferred embodiments given to fully illustrate the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. An upper jaw movement simulation component, characterized in that, the upper jaw movement simulation component includes an upper jaw component and a first crank-slider mechanism for controlling the up and down movement of the upper jaw component. The first crank-slider mechanism includes a first eccentric wheel, a first motor for driving the first eccentric wheel to rotate, a first connecting rod, and a first sliding rod. The upper end of the first connecting rod is rotatably connected to the first eccentric wheel, and the lower end of the first connecting rod is rotatably connected to the upper end of the first sliding rod. The upper jaw movement simulation component further includes a first fixing plate, and the first sliding rod is slidably mounted on the first fixing plate up and down. The lower end of the first sliding rod can drive the upper jaw component to move up and down; a pressure sensor is further provided between the lower end of the first sliding rod and the upper jaw component; the pressure for the upper jaw component to press down can be controlled according to the pressure measured by the pressure sensor, so as to control the chewing force, and at least the food hardness and elasticity can be evaluated; a slider is further provided on the upper jaw component, and the slider is slidably connected to the upper side of the upper jaw component. The lower end of the first sliding rod is fixedly connected to the slider; the upper jaw component includes an upper jaw body and an upper cover provided on the upper jaw body. The upper jaw body is provided with a cavity with an upward opening, and an elastic seal is provided at the opening of the cavity. The upper cover covers the opening of the cavity; the upper jaw movement simulation component further includes a first sensing piece mounted on the first eccentric wheel and a first sensor corresponding to the first sensing piece; upper teeth are mounted under the upper jaw body.

2. The upper jaw movement simulation component according to claim 1, characterized in that, two upper tooth mounting grooves extending in the front-rear direction are provided on the lower side of the upper jaw body. The left and right sides of the upper tooth mounting grooves have clamping edges extending in the front-rear direction. The upper teeth are provided with clamping grooves matching the clamping edges, and the upper teeth are detachably mounted in the upper tooth mounting grooves through the clamping grooves.

3. A bionic oral device, characterized in that, the bionic oral device includes the upper jaw movement simulation component according to claim 1; the bionic oral device further includes a lower jaw component. The lower jaw component includes a bottom wall, two side walls arranged on the left and right, and a rear wall located behind the two side walls. Two rows of lower teeth corresponding to the upper teeth are provided on the bottom wall. The upper jaw component can be inserted into the lower jaw component under the drive of the first crank-slider mechanism, so that the upper teeth and the lower teeth contact and press against each other; One side surface of each of the left and right sides of the upper jaw body is provided with a first convex portion, and one side wall of the lower jaw assembly is provided with a second convex portion that cooperates with the first convex portion. An elastic member is provided on the other side wall of the lower jaw assembly. The elastic member can apply a thrust force to the upper jaw assembly. During the process of the upper jaw assembly moving downward, the second convex portion can squeeze the first convex portion, causing the upper jaw assembly to overcome the thrust force of the elastic member and move toward the side close to the elastic member. The first convex portion is a strip-shaped convex rib with wedge-shaped surfaces on the upper and lower sides, and the second convex portion is a strip-shaped convex rib with an arc-shaped cross section.

Images