Test device for simulating mouse bite

Abstract

The invention relates to the field of test devices, in particular to a mouse biting simulation test device which comprises a test bed, a clamping device and a bionic biting tooth assembly, the clamping device and the bionic biting tooth assembly are arranged in a straight line and are both arranged on the test bed, and the clamping device is used for clamping a test sample piece. The bionic meshing assembly is used for meshing, dragging and grinding the test sample piece. The real biting behavior of the mouse is restored, the simulation trueness is high, and the basic test requirement for the biological damage resistance of the product is met on the whole.

Description

Technical Field

[0001] This invention relates to the field of testing devices, and more particularly to a device for simulating mouse biting tests. Background Technology

[0002] In the field of product safety testing, mouse biting tests have become an indispensable research component in product development, such as in the power cable industry, where mouse biting data is used to improve the design of rodent-proof cables. However, with the implementation of the "3R principle" (replace, reduce, optimize) in animal experiments, the welfare of experimental animals has received increasing attention. Based on this, a simulated mouse biting test device was designed to replace real mice and simulate and reproduce the biting behavior of mice. Summary of the Invention

[0003] In view of the above problems, the purpose of this invention is to provide a device for simulating mouse biting tests. The technical solution adopted by this invention is as follows:

[0004] This invention provides a device for simulating mouse biting tests, comprising:

[0005] Test bench;

[0006] A clamping device is disposed on the test bench and is used to clamp the test specimen;

[0007] A bionic biting component is provided, which is disposed on the test bench. The bionic biting component includes an occlusal maxilla and an occlusal mandible. The rear ends of the occlusal maxilla and the occlusal mandible are connected to an occlusal driving device. The occlusal driving device drives the occlusal maxilla and the occlusal mandible to move closer or further apart. A molar component and an incisor component are provided on the occlusal surfaces of the occlusal maxilla and the occlusal mandible. The molar component is located behind the incisor component.

[0008] Preferably, the occlusal drive device includes a main frame, and two sets of linkage assemblies are symmetrically arranged vertically on the front part of the main frame. Each set of linkage assemblies includes two parallel linkages. The front end of the linkage is hinged to the occlusal maxilla or occlusal mandible, and the rear end of the linkage is rotatably connected to the main frame.

[0009] The main frame is also equipped with a connecting rod drive assembly that drives the two connecting rod assemblies to rotate.

[0010] Preferably, the linkage drive assembly includes a sleeve and a drive motor. A connector is fixed to the front end of the sleeve. Drive rods are arranged in both the vertical and horizontal directions of the connector. One end of the drive rod is rotatably connected to the corresponding linkage, and the other end is rotatably connected to the connector.

[0011] The drive motor is located at the rear of the main frame, and a lead screw is mounted on the drive shaft of the drive motor. The lead screw is threadedly connected to the sleeve.

[0012] Preferably, the engagement drive device is mounted on the traction slide;

[0013] The traction slide includes a slide base, a slide rail is arranged below the slide base, the top of the slide base is connected to the engagement drive device, and a telescopic drive member is provided at the rear of the slide base. The telescopic end of the telescopic drive member is connected to the slide base through a tension sensor.

[0014] Preferably, the incisor assembly includes an incisor model, the bottom of the incisor model is provided with an incisor support rod, and the bottom of the incisor support rod is provided with a first compressive force sensor;

[0015] The sides of both the maxillary and mandibular jaws are provided with first mounting grooves, and the occlusal surfaces of both the maxillary and mandibular jaws are provided with first guide holes. The incisor support rod is disposed in the first guide hole, and the first pressure force sensor is fixed in the first mounting groove.

[0016] Preferably, the molar assembly includes a molar model, the bottom of the molar model is provided with a molar support rod, and the bottom of the molar support rod is provided with a second pressure force sensor;

[0017] The lateral portions of the maxillary and mandibular jaws are each provided with a second mounting groove, and the occlusal surfaces of the maxillary and mandibular jaws are each provided with a second guide hole. The molar support rod is disposed in the second guide hole, and the second pressure force sensor is fixed in the second mounting groove.

[0018] Preferably, the top of the molar support rod is provided with a bracket, the top of the bracket is provided with a U-shaped groove, a U-shaped support plate is slidably engaged in the groove, the top of the support plate is fixed to the molar model, and a vibrator is embedded in the support plate.

[0019] Preferably, the clamping device includes two vertically arranged support frames, a fixed clamping block is provided at the upper end of the support frame, and a movable clamping block is provided above the fixed clamping block. The movable clamping block is connected to the fixed clamping block by bolts, and the movable clamping block cooperates with the fixed clamping block to clamp the test sample.

[0020] Preferably, the lower ends of both support frames are fixed to the turntable.

[0021] Preferably, a touch screen is provided on one side of the test bench.

[0022] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0023] This invention can simulate three types of actions of mice: biting, dragging, and grinding, thus restoring the real biting behavior of mice. The simulation is highly realistic and meets the basic testing requirements for the product's resistance to biological damage. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the structure of the simulated mouse biting test device of the present invention;

[0026] Figure 2 This is a front view of the simulated mouse biting test device of the present invention;

[0027] Figure 3 This is a front view of the bionic bite tooth assembly of the present invention;

[0028] Figure 4 This is a schematic diagram of the traction slide and engagement drive device of the present invention;

[0029] Figure 5 This is a cross-sectional view of the incisor assembly of the present invention;

[0030] Figure 6 This is an anatomical diagram of the incisor assembly of the present invention;

[0031] Figure 7 This is a cross-sectional view of the molar assembly of the present invention;

[0032] Figure 8 This is a disassembled diagram of the molar assembly of the present invention;

[0033] Figure 9 This is a schematic diagram of the clamping device of the present invention.

[0034] Explanation of reference numerals in the attached drawings: 1. Test bench; 2. Clamping device; 201. Support frame; 202. Fixed clamping block; 203. Movable clamping block; 204. Bolt; 205. Turntable; 3. Bionic bite assembly; 301. Maxillary biting; 302. Mandibular biting; 303. Biting drive device; 303-1. Main frame; 303-2. Linkage assembly; 303-3. Sleeve; 303-4. Drive motor; 303-5. Connector; 303-6. Drive rod; 303-7. Lead screw; 304. Molar assembly; 304-1. Molar model; 304-2. Molar support rod; 30 4-3, Second compressive force sensor; 304-4, Second mounting groove; 304-5, Second guide hole; 304-6, Support; 304-7, Groove; 304-8, Support plate; 304-9, Vibrator; 305, Incisor gear assembly; 305-1, Incisor gear model; 305-2, Incisor gear support rod; 305-3, First compressive force sensor; 305-4, First mounting groove; 305-5, First guide hole; 306, Traction slide; 306-1, Slide seat; 306-2, Slide rail; 306-3, Telescopic drive component; 306-4, Tension sensor; 4, Test specimen; 5, Touch screen display. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0036] like Figure 1 and 2 As shown, this embodiment discloses a simulated mouse biting test device, including a test platform 1, a clamping device 2, and a bionic biting tooth assembly 3. The clamping device 2 and the bionic biting tooth assembly 3 are arranged in a straight line and are both mounted on the test platform 1. The clamping device 2 is used to clamp the test sample 4. The bionic biting tooth assembly 3 is used to bite, drag, and grind the test sample 4.

[0037] like Figure 3 As shown, the bionic biting component 3 is set on the test bench 1. The bionic biting component 3 includes an occlusal maxilla 301 and an occlusal mandible 302. The rear ends of the occlusal maxilla 301 and the occlusal mandible 302 are connected to the biting drive device 303. The biting drive device 303 drives the occlusal maxilla 301 and the occlusal mandible 302 to move closer or further away from each other. The occlusal surfaces of the occlusal maxilla 301 and the occlusal mandible 302 are provided with a molar component 304 and an incisor component 305. The molar component 304 is located behind the incisor component 305.

[0038] like Figure 4As shown, the bite drive device 303 includes a main frame 303-1. Two sets of connecting rod assemblies 303-2 are symmetrically arranged at the front of the main frame 303-1. Each set of connecting rod assemblies 303-2 includes two parallel connecting rods. The front end of the connecting rod is hinged to the maxillary jaw 301 or the mandibular jaw 302, and the rear end of the connecting rod is rotatably connected to the main frame 303-1. The main frame 303-1 is also provided with a connecting rod drive assembly for driving the two connecting rod assemblies 303-2 to rotate.

[0039] The linkage drive assembly includes a sleeve 303-3 and a drive motor 303-4. The main frame 303-1 is provided with an insertion hole that mates with the sleeve 303-3. A connector 303-5 is fixed to the front end of the sleeve 303-3. Drive rods 303-6 are arranged in both the upper and lower directions of the connector 303-5. One end of the drive rod 303-6 is rotatably connected to the corresponding connecting rod, and the other end is rotatably connected to the connector 303-5. The drive motor 303-4 is located at the rear of the main frame 303-1. The housing of the drive motor 303-4 is fixed to the main frame 303-1. A lead screw 303-7 is installed on the drive shaft of the drive motor 303-4. The lead screw 303-7 is threadedly connected to the sleeve 303-3.

[0040] The engagement drive device 303 is mounted on the traction slide 306. The traction slide 306 includes a slide base 306-1, the top of which is fixed to the main frame 303-1 of the engagement drive device 303. A slide rail 306-2 is arranged below the slide base 306-1 and is fixed to the test bench 1. A telescopic drive component 306-3 is provided at the rear of the slide base 306-1, and the telescopic end of the telescopic drive component 306-3 is connected to the slide base 306-1 through a tension sensor 306-4. The telescopic drive component 306-3 can be an electric cylinder. The main body of the telescopic drive component 306-3 is hinged to the test bench 1.

[0041] like Figure 5 and 6 As shown, the incisor assembly 305 includes an incisor model 305-1, an incisor support rod 305-2 fixed to the bottom of the incisor model 305-1, and a first pressure force sensor 305-3 disposed at the bottom of the incisor support rod 305-2.

[0042] Both the maxillary jaw 301 and the mandibular jaw 302 have a first mounting groove 305-4 on their sides. Both jaws have a first guide hole 305-5 on their occlusal surfaces, which communicate with the first mounting groove 305-4. An incisor support rod 305-2 is positioned within the first guide hole 305-5. Both the incisor support rod 305-2 and the first guide hole 305-5 are square to prevent rotation of the incisor support rod 305-2 within the first guide hole 305-5. The lower end of the incisor support rod 305-2 passes through the first guide hole 305-5 and is fixed to a first pressure force sensor 305-3, which is fixed within the first mounting groove 305-4.

[0043] like Figure 7 and 8 As shown, the molar assembly 304 includes a molar model 304-1, a molar support rod 304-2 is provided at the bottom of the molar model 304-1, and a second pressure force sensor 304-3 is provided at the bottom of the molar support rod 304-2.

[0044] The sides of both the maxillary mandible 301 and the mandibular mandible 302 are provided with second mounting grooves 304-4. The occlusal surfaces of both the maxillary mandible 301 and the mandibular mandible 302 are provided with second guide holes 304-5. The second guide holes 304-5 are connected to the second mounting grooves 304-4. The molar support rod 304-2 is disposed in the second guide hole 304-5. Both the molar support rod 304-2 and the second guide hole 304-5 are square to prevent the molar support rod 304-2 from rotating in the second guide hole 304-5. The lower end of the molar support rod 304-2 passes through the second guide hole 304-5 and is fixed to the second pressure force sensor 304-3. The second pressure force sensor 304-3 is fixed in the second mounting groove 304-4.

[0045] In this embodiment, a support 304-6 is provided at the top of the molar support rod 304-2, and a U-shaped groove 304-7 is provided at the top of the support 304-6 (the axial cross-section of the groove 304-7 is U-shaped). A U-shaped support plate 304-8 (the axial cross-section of the support plate 304-8 is U-shaped, and it is composed of two truncated cones, with the lower truncated cone being larger) is slidably engaged in the groove 304-7. The top of the support plate 304-8 is fixed to the molar model 304-1, and a vibrator 304-9 is embedded in the support plate 304-8. The support plate 304-8 moves horizontally in the groove 304-7 under the action of the vibrator 304-9.

[0046] like Figure 9As shown, the clamping device 2 includes two vertically arranged support frames 201. A fixed clamping block 202 is provided at the upper end of the support frame 201. A movable clamping block 203 is provided above the fixed clamping block 202. The movable clamping block 203 is connected to the fixed clamping block 202 by bolts 204. The movable clamping block 203 and the fixed clamping block 202 cooperate to clamp the test sample 4.

[0047] The lower ends of the two support frames 201 are fixed on the turntable 205. The turntable 205 is rotatably connected to the test bench 1. A drive motor is provided at the bottom of the test bench 1, and the drive motor drives the turntable 205 to rotate.

[0048] In this embodiment, all sensors are electrically connected to the data acquisition module, which transmits the acquired data to the touch screen 5, which is located on one side of the test bench 1.

[0049] The working process of this invention is as follows:

[0050] First, the test sample 4 is clamped on the clamping device 2. The angle between the test sample 4 and the axis of the bionic biting component 3 can be adjusted by the turntable 205 so as to simulate different biting directions of different mice on the sample.

[0051] Incisor assembly 305 biting and dragging simulation: The telescopic drive 306-3 drives the traction slide 306 to gradually approach the test specimen 4. When the two incisor assemblies 305 move to the upper and lower positions of the test specimen 4, the biting drive device 303 starts to work. The drive motor 303-4 drives the lead screw 303-7 to rotate, which in turn drives the sleeve 303-3 to move backward. The sleeve 303-3 pulls the drive rod 303-6, which in turn drives the maxillary jaw 301 and mandibular jaw 302 to move closer to each other. The two incisor assemblies 305 bite onto the test specimen 4. The first compressive force sensor 305-3 is used to monitor the biting force of the incisor assembly 305 on the test specimen 4. In addition, the telescopic drive 306-3 drives the traction slide 306 to gradually move away from the test specimen 4, and the pulling force sensor 306-4 is used to simulate the dragging of the test specimen 4 by the mouse.

[0052] The biting and dragging simulation process of the molar assembly 304 is the same as that of the incisor assembly 305. The difference is that the molar assembly 304 can also simulate the grinding of the mouse molars on the test specimen: that is, after the molar model 304-1 bites on the test specimen 4, the vibrator 304-9 starts to work, driving the molar model 304-1 to vibrate in the horizontal direction, thereby simulating the grinding of the mouse molars on the test specimen 4.

[0053] Throughout the simulation process, the drive motor 303-4, the telescopic drive component 306-3, and the vibrator 304-9 are all electrically connected to the control module, and the sensor components are all electrically connected to the data acquisition module. The acquisition module transmits the acquired data to the touch screen 5.

[0054] After the device is activated by the control module, the drive motor 303-4, the telescopic drive component 306-3, and the vibrator 304-9 drive the bionic bite tooth assembly 3 to complete the compound action of "biting-grinding-dragging". The control module adjusts the bionic bite tooth assembly 3 according to the data collected by the data acquisition module, and the data acquisition module records key test data simultaneously, which is finally displayed in real time on the touch screen 5.

[0055] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for simulating mouse biting tests, characterized in that, include: Test bench (1); Clamping device (2), the clamping device (2) is disposed on the test bench (1), the clamping device (2) is used to clamp the test specimen (4); A bionic biting component (3) is provided on the test bench (1). The bionic biting component (3) includes an occlusal maxilla (301) and an occlusal mandible (302). The rear ends of the occlusal maxilla (301) and the occlusal mandible (302) are connected to an occlusal drive device (303). The occlusal drive device (303) drives the occlusal maxilla (301) and the occlusal mandible (302) to move closer to each other or further away from each other. A molar component (304) and an incisor component (305) are provided on the occlusal surfaces of the occlusal maxilla (301) and the occlusal mandible (302). The molar component (304) is located behind the incisor component (305).

2. The simulated mouse biting test device according to claim 1, characterized in that: The bite drive device (303) includes a main frame (303-1). Two sets of connecting rod assemblies (303-2) are symmetrically arranged at the front of the main frame (303-1). Each set of connecting rod assemblies (303-2) includes two parallel connecting rods. The front end of the connecting rod is hinged to the maxillary jaw (301) or mandibular jaw (302), and the rear end of the connecting rod is rotatably connected to the main frame (303-1). The main frame (303-1) is also provided with a connecting rod drive assembly for driving the two connecting rod assemblies (303-2) to rotate.

3. The simulated mouse biting test device according to claim 2, characterized in that: The linkage drive assembly includes a sleeve (303-3) and a drive motor (303-4). A connector (303-5) is fixed to the front end of the sleeve (303-3). A drive rod (303-6) is arranged in both the upper and lower directions of the connector (303-5). One end of the drive rod (303-6) is rotatably connected to the corresponding linkage, and the other end is rotatably connected to the connector (303-5). The drive motor (303-4) is located at the rear of the main frame (303-1), and a lead screw (303-7) is mounted on the drive shaft of the drive motor (303-4). The lead screw (303-7) is threadedly connected to the sleeve (303-3).

4. The simulated mouse biting test device according to claim 1, characterized in that: The engagement drive device (303) is mounted on the traction slide (306); The traction slide (306) includes a slide base (306-1), a slide rail (306-2) is arranged below the slide base (306-1), the top of the slide base (306-1) is connected to the engagement drive device (303), and a telescopic drive member (306-3) is provided at the rear of the slide base (306-1). The telescopic end of the telescopic drive member (306-3) is connected to the slide base (306-1) through a tension sensor (306-4).

5. The simulated mouse biting test device according to claim 1, characterized in that: The incisor assembly (305) includes an incisor model (305-1), an incisor support rod (305-2) is provided at the bottom of the incisor model (305-1), and a first pressure force sensor (305-3) is provided at the bottom of the incisor support rod (305-2). The sides of the maxillary (301) and mandibular (302) are provided with first mounting grooves (305-4), and the occlusal surfaces of the maxillary (301) and mandibular (302) are provided with first guide holes (305-5). The incisor support rod (305-2) is disposed in the first guide hole (305-5), and the first pressure force sensor (305-3) is fixed in the first mounting groove (305-4).

6. The simulated mouse biting test device according to claim 1, characterized in that: The molar assembly (304) includes a molar model (304-1), the bottom of the molar model (304-1) is provided with a molar support rod (304-2), and the bottom of the molar support rod (304-2) is provided with a second pressure force sensor (304-3). The sides of the maxillary (301) and mandibular (302) are provided with second mounting grooves (304-4), and the occlusal surfaces of the maxillary (301) and mandibular (302) are provided with second guide holes (304-5). The molar support rod (304-2) is disposed in the second guide hole (304-5), and the second pressure force sensor (304-3) is fixed in the second mounting groove (304-4).

7. The simulated mouse biting test device according to claim 6, characterized in that: The top of the molar support rod (304-2) is provided with a support (304-6), the top of the support (304-6) is provided with a U-shaped groove (304-7), a U-shaped support plate (304-8) is slidably engaged in the groove (304-7), the top of the support plate (304-8) is fixed to the molar model (304-1), and a vibrator (304-9) is embedded in the support plate (304-8).

8. The simulated mouse biting test device according to claim 1, characterized in that: The clamping device (2) includes two vertically arranged support frames (201). A fixed clamping block (202) is provided at the upper end of the support frame (201). A movable clamping block (203) is provided above the fixed clamping block (202). The movable clamping block (203) is connected to the fixed clamping block (202) by bolts (204). The movable clamping block (203) and the fixed clamping block (202) cooperate to clamp the test sample (4).

9. The simulated mouse biting test device according to claim 1, characterized in that: The lower ends of both support frames (201) are fixed on the turntable (205).

10. The simulated mouse biting test device according to claim 1, characterized in that: A touch screen (5) is provided on one side of the test bench (1).

Images