Mouth expanding device for oral care

By using a stepper motor and electric push rod drive system, combined with a worm gear mechanism, the oral care mouth opener can be easily opened, closed, and adjusted at multiple angles, solving the safety and convenience problems of existing mouth openers and improving the safety and flexibility of use.

CN223640881UActive Publication Date: 2025-12-09DENTAL HOSPITAL AFFILIATED TO GUANGXI MEDICAL UNIV (DENTAL HOSPITAL OF GUANGXI ZHUANG AUTONOMOUS REGION)
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Patent Information

Application Number
CN202520626697.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-04
Publication Date
2025-12-09
Estimated Expiration
2035-04-04

AI Technical Summary

Technical Problem

Existing mouth openers for oral care are not convenient and flexible to open and close, and are prone to excessive movement that can cause damage to the mouth, affecting the safety and convenience of the mouth opener.

Method used

A stepper motor drives a bidirectional threaded rod to move a sliding block and an elastic limit rod, enabling the arc-shaped mouth support to move in opposite directions. Combined with an electric push rod and a servo motor-driven worm gear system, the mouth support can be flipped and its angle adjusted.

Benefits of technology

This invention enables convenient opening and closing of mouth openers for oral care, avoiding damage to the mouth and improving the safety and multi-angle usability of mouth openers.

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Abstract

The utility model discloses a mouth expanding device for oral care, and belongs to the technical field of mouth expanding devices. Comprising a supporting frame and a bottom plate, the bottom plate is installed at the top end of the supporting frame, an overturning plate is arranged outside the bottom plate, a rotating disc is arranged outside the overturning plate, a longitudinal support is installed at the top end of the rotating disc, and two first supporting plates are arranged outside the longitudinal support; second supporting plates are arranged on the outer portions of the first supporting plates, and arc-shaped opening expanding devices are arranged on the outer portions of the second supporting plates. According to the mouth dilator for oral care, the mouth dilator can be conveniently and elastically dilated and closed, the situation that the mouth of a person is injured due to the fact that the moving range is too large is avoided, the safety of the mouth dilator for oral care to dilate and close the mouth dilator is improved, the mouth dilator can be conveniently and rapidly used by rotating the angle, and the mouth dilator is convenient to use. And the convenience of using the mouth dilator through multi-angle rotation of the mouth dilator for oral care is improved.
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Description

Technical Field

[0001] This utility model relates to the field of mouth opener technology, specifically a mouth opener for oral care. Background Technology

[0002] For patients with certain oral conditions such as trismus or difficulty opening their mouths, mouth sizing devices can temporarily expand the oral cavity, helping doctors to examine and treat the inside of the mouth. This allows doctors to more easily observe the patient's teeth, gums, and oral mucosa, enabling accurate diagnosis and treatment. Mouth sizing devices can also be used for daily oral care. When using tools such as toothbrushes for oral cleaning, mouth sizing devices are sometimes needed to help open the mouth and ensure more thorough cleaning of teeth and gums. Especially after certain oral surgeries, mouth sizing devices can help patients better clean and recover post-operatively.

[0003] As disclosed in the authorization announcement number CN221671630U, an auxiliary mouth opener for dental care includes a main body. Limiting blocks are fixedly connected to the front and rear ends of the outer walls on both sides of the main body. A first elastic rubber block is provided in the middle of the upper surface of the main body, and a second elastic rubber block is provided in the middle of the lower surface of the main body. Fixing blocks are fixedly connected to the outer walls on both sides of the first elastic rubber block and the second elastic rubber block.

[0004] Although this dental care auxiliary mouth opener allows the first and second elastic rubber blocks to be stretched and deformed by pulling the fixing block after patient use, thereby enabling the first and second limiting bands to be removed from the main body, the main body, the first and second limiting bands can be disinfected and cleaned, facilitating subsequent reuse and reducing discomfort to the lips during use, thus improving patient comfort during mouth opening. Furthermore, the dental care auxiliary mouth opener uses medical female Velcro on the first and second limiting bands and medical female Velcro on the first and second auxiliary bands, allowing the first and second auxiliary bands to be detached and replaced from the first and second limiting bands, further improving the cleanliness of the mouth opener.

[0005] However, this does not solve the problem that existing mouthguards are generally not easy to open and close flexibly, and are prone to excessive movement that could damage the mouth. This affects the safety of opening and closing the mouthguard, and makes it inconvenient to rotate the mouthguard easily, thus affecting the convenience of using the mouthguard for multi-angle rotation. Utility Model Content

[0006] The purpose of this utility model is to provide a mouth opener for oral care, so as to solve the problems mentioned in the background art, such as the mouth opener not being convenient and flexible in opening and closing, the mouth opener being prone to excessive movement and causing damage to the mouth, affecting the safety of opening and closing the mouth opener, and the mouth opener not being convenient to rotate at various angles for use, thus affecting the convenience of using the mouth opener for multi-angle rotation.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] An oral care mouth opener includes a support frame and a base plate. The base plate is mounted on the top of the support frame. A flip plate is provided on the outside of the base plate. A rotating disk is provided on the outside of the flip plate. A longitudinal support is mounted on the top of the rotating disk. Two sets of first support plates are provided on the outside of the longitudinal support. A second support plate is provided on the outside of each of the first support plates. An arc-shaped mouth opener is provided on the outside of each of the second support plates. A stepper motor is mounted on the top of the longitudinal support. A bidirectional threaded rod is mounted on the output end of the stepper motor. The bidirectional threaded rod extends into the interior of the longitudinal support and is movably connected thereto. Threaded sleeves are symmetrically fitted on the surface of the bidirectional threaded rod. Sliding blocks are mounted on the surface of each threaded sleeve. A sliding groove is provided on the inner wall of the longitudinal support. The sliding blocks are slidably connected to the sliding groove. The sidewalls of the sliding blocks are all connected to the first support plates. A first elastic limiting rod is movably mounted on the side of the first support plate away from the sliding blocks.

[0009] Optionally, the end of the first elastic limiting rod away from the first support plate is connected to the second support plate, and a first spring is installed on the side wall of the first support plate outside the first elastic limiting rod, with the end of the first spring away from the first support plate connected to the second support plate.

[0010] Optionally, a second elastic limiting rod is movably installed at the bottom end of the second support plate, and the end of the second elastic limiting rod away from the second support plate is connected to the arc-shaped support device.

[0011] Optionally, a second spring is installed at the bottom end of the second support plate outside the second elastic limiting rod, and the side of the second spring away from the second support plate is connected to the arc-shaped splinter.

[0012] Optionally, a first shaft is symmetrically and movably mounted on the side wall of the base plate, and an electric push rod is fitted on the surface of each first shaft.

[0013] Optionally, each of the electric push rods has a second shaft movably mounted at its output end, and each electric push rod is movably connected to the flip plate via the second shaft.

[0014] Optionally, a rotating shaft is movably mounted on the side of the flip plate away from the second axis, and the flip plate is movably connected to the base plate through the rotating shaft.

[0015] Optionally, a support shaft is movably installed at the center of the top of the flip plate, and the side of the support shaft away from the flip plate is connected to the rotating disk.

[0016] Optionally, a worm gear is fitted onto the surface of the support shaft, and a servo motor is mounted on the top of the outer flip plate of the support shaft.

[0017] Optionally, a worm gear is installed at the output end of the servo motor, and the worm gear meshes with a worm wheel.

[0018] Compared with the prior art, the beneficial effects of this utility model are: this mouth opener not only realizes the convenient and flexible opening and closing of the mouth opener for oral care, avoiding damage to the mouth caused by excessive movement range, and improving the safety of opening and closing the mouth opener for oral care, but also facilitates convenient use of the mouth opener by rotating the mouth opener at various angles, thus improving the convenience of using the mouth opener for oral care by rotating it at multiple angles.

[0019] A stepper motor drives a bidirectional threaded rod to rotate, which in turn drives two sets of threaded sleeves to move in opposite directions. The threaded sleeves drive a sliding block to slide inside a groove. The sliding block drives a first support plate, a first elastic limiting rod, a second support plate, a second elastic limiting rod, and an arc-shaped mouth opener to move in opposite directions, bringing the two sets of arc-shaped mouth openers into contact. The user's mouth is opened, and the arc-shaped mouth opener is placed inside. The stepper motor is then turned on in the opposite direction, causing the two sets of arc-shaped mouth openers to move in opposite directions. When the arc-shaped mouth opener contacts and opens the user's mouth, the stepper motor stops rotating. The first spring and the first elastic limiting rod reduce the force transmitted from the first support plate to the second support plate, and the second spring and the second elastic limiting rod reduce the collision force between the arc-shaped mouth opener and the user's mouth. This allows for convenient and flexible opening and closing of the mouth opener, avoiding damage to the user's mouth due to excessive movement and improving the safety of opening and closing the mouth opener.

[0020] An electric push rod drives the second shaft to move, which in turn drives the flipping plate to rotate around the rotating axis. The flipping plate drives the rotating disk, longitudinal support, first support plate, second support plate, and arc-shaped mouth opener to rotate at a certain angle. A servo motor drives the worm gear to rotate, which in turn drives the worm wheel to rotate. The worm wheel drives the support shaft, rotating disk, longitudinal support, first support plate, second support plate, and arc-shaped mouth opener to rotate at a certain angle. This allows for convenient use of the mouth opener by rotating it at multiple angles, improving its ease of use. Attached Figure Description

[0021] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a front view structural diagram of the present utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the flip plate of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the base plate of this utility model;

[0026] Figure 5 This is a front view cross-sectional structural diagram of the flip plate of this utility model;

[0027] Figure 6 This is a three-dimensional structural diagram of the longitudinal support of this utility model;

[0028] Figure 7 This is a three-dimensional structural diagram of the second support plate of this utility model.

[0029] Figure label:

[0030] 1. Support frame; 2. Base plate; 3. Flip plate; 4. Rotary disk; 5. Longitudinal support; 6. First support plate; 7. Second support plate; 8. Arc-shaped support; 9. First shaft; 10. Electric push rod; 11. Second shaft; 12. Rotary shaft; 13. Servo motor; 14. Worm gear; 15. Worm wheel; 16. Support shaft; 17. Stepper motor; 18. Bidirectional threaded rod; 19. Threaded sleeve; 20. Sliding block; 21. Slide groove; 22. First spring; 23. First elastic limit rod; 24. Second spring; 25. Second elastic limit rod.

[0031] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0032] The oral care mouth opener provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can also use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0033] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0034] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0035] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0036] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0037] like Figures 1 to 7As shown, an embodiment of this utility model provides an oral care mouth opener, including a support frame 1 and a base plate 2. The base plate 2 is mounted on the top of the support frame 1. A flip plate 3 is provided on the outside of the base plate 2. A rotating disk 4 is provided on the outside of the flip plate 3. A longitudinal support 5 is mounted on the top of the rotating disk 4. Two sets of first support plates 6 are provided on the outside of the longitudinal support 5. A second support plate 7 is provided on the outside of each of the first support plates 6. An arc-shaped mouth opener 8 is provided on the outside of each of the second support plates 7. A stepper motor 17 is mounted on the top of the longitudinal support 5. A bidirectional threaded rod 18 is mounted on the output end of the stepper motor 17. The bidirectional threaded rod 18 extends into the interior of the longitudinal support 5 and is movably connected thereto. Threaded sleeves 19 are symmetrically fitted on the surface of the bidirectional threaded rod 18. All surfaces of sleeve 19 are equipped with sliding blocks 20. The inner wall of the longitudinal support 5 is provided with a sliding groove 21. The sliding blocks 20 are slidably connected to the sliding groove 21. The side walls of the sliding blocks 20 are all connected to the first support plate 6. The side of the first support plate 6 away from the sliding blocks 20 is movably equipped with a first elastic limiting rod 23. The end of the first elastic limiting rod 23 away from the first support plate 6 is connected to the second support plate 7. The side wall of the first support plate 6 outside the first elastic limiting rod 23 is equipped with a first spring 22. The end of the first spring 22 away from the first support plate 6 is connected to the second support plate 7. The bottom end of the second support plate 7 is movably equipped with a second elastic limiting rod 25. The end of the second elastic limiting rod 25 away from the second support plate 7 is connected to the arc-shaped support device 8.

[0038] A second spring 24 is installed at the bottom of the second support plate 7 outside the second elastic limiting rod 25. The side of the second spring 24 away from the second support plate 7 is connected to the arc-shaped splinter 8.

[0039] When using an oral care mouth opener, turn on the stepper motor 17. Supported by the longitudinal bracket 5, the stepper motor 17 drives the bidirectional threaded rod 18 to rotate. With the threaded connection between the bidirectional threaded rod 18 and the threaded sleeve 19, the bidirectional threaded rod 18 drives the two sets of threaded sleeves 19 to move in opposite directions. Supported by the sliding block 20 and the sliding groove 21, the threaded sleeve 19 drives the sliding block 20 to slide inside the sliding groove 21. The sliding block 20 drives the first support plate 6, the first elastic limiting rod 23, the second support plate 7, the second elastic limiting rod 25, and the arc-shaped mouth opener 8 to move in opposite directions, causing the two sets of arc-shaped mouth openers 8 to come into contact. Open the person's mouth and insert the arc-shaped mouth opener 8 into the mouth. Inside the mouth, the stepper motor 17 is opened in the opposite direction, causing the two sets of arc-shaped mouth openers 8 to move in opposite directions. When the arc-shaped mouth openers 8 come into contact with the mouth, the stepper motor 17 stops rotating. The first spring 22 and the first elastic limit rod 23 reduce the force transmitted from the first support plate 6 to the second support plate 7. The second spring 24 and the second elastic limit rod 25 reduce the collision force between the arc-shaped mouth openers 8 and the mouth, avoiding damage to the mouth caused by excessive movement. This enables convenient and flexible opening and closing of the mouth opener for oral care, avoiding damage to the mouth caused by excessive movement and improving the safety of opening and closing the mouth opener for oral care.

[0040] A first shaft 9 is symmetrically and movably installed on the side wall of the base plate 2. An electric push rod 10 is fitted on the surface of each first shaft 9. A second shaft 11 is movably installed on the output end of each electric push rod 10. Each electric push rod 10 is movably connected to the flip plate 3 through the second shaft 11.

[0041] A rotating shaft 12 is movably installed on the side of the flip plate 3 away from the second shaft 11. The flip plate 3 is movably connected to the base plate 2 through the rotating shaft 12. A support shaft 16 is movably installed at the center of the top of the flip plate 3. The side of the support shaft 16 away from the flip plate 3 is connected to the rotating disk 4.

[0042] A worm gear 15 is fitted on the surface of the support shaft 16. A servo motor 13 is installed on the top of the external flip plate 3 of the support shaft 16. A worm 14 is installed on the output end of the servo motor 13. The worm 14 meshes with the worm gear 15.

[0043] When the mouth opener needs to be rotated for use, the two sets of electric push rods 10 are activated. Supported by the first shaft 9, the electric push rods 10 drive the second shaft 11 to move. The second shaft 11 drives the flip plate 3 to rotate around the rotating shaft 12. The flip plate 3 drives the rotating disk 4, the longitudinal support 5, the first support plate 6, the second support plate 7, and the arc-shaped mouth opener 8 to rotate at a certain angle. The servo motor 13 is activated. Supported by the flip plate 3, the servo motor 13 drives the worm gear 14 to rotate. Under the meshing of the worm gear 14 and the worm wheel 15, the worm gear 14 drives the worm wheel 15 to rotate. The worm wheel 15 drives the support shaft 16, the rotating disk 4, the longitudinal support 5, the first support plate 6, the second support plate 7, and the arc-shaped mouth opener 8 to rotate at a certain angle. This facilitates convenient rotation of the mouth opener for use, realizing convenient rotation of the mouth opener for use in oral care and improving the convenience of multi-angle rotation of the mouth opener for use in oral care.

[0044] The working principle of the technical solution provided by this utility model is as follows: When using an oral care mouth opener, the stepper motor 17 drives the bidirectional threaded rod 18 to rotate. The bidirectional threaded rod 18 drives two sets of threaded sleeves 19 to move in opposite directions. The threaded sleeves 19 drive the sliding block 20 to slide inside the slide groove 21. The sliding block 20 drives the first support plate 6, the first elastic limiting rod 23, the second support plate 7, the second elastic limiting rod 25, and the arc-shaped mouth opener 8 to move in opposite directions, so that the two sets of arc-shaped mouth openers 8 come into contact, opening the person's mouth and placing the arc-shaped mouth opener 8 into the mouth. The stepper motor 17 is then turned on in the opposite direction, causing the two sets of arc-shaped mouth openers 8 to move in opposite directions. When the arc-shaped mouth opener 8 comes into contact with the person's mouth, the stepper motor 17 stops rotating, and the first spring 22 and the first elastic limiting rod 23 slow down the movement. The first support plate 6 transmits the force of the second support plate 7. The second spring 24 and the second elastic limiting rod 25 reduce the impact force between the arc-shaped mouth opener 8 and the mouth. When the mouth opener needs to be rotated, the electric push rod 10 drives the second shaft 11 to move. The second shaft 11 drives the flipping plate 3 to rotate around the rotating shaft 12. The flipping plate 3 drives the rotating disk 4, the longitudinal support 5, the first support plate 6, the second support plate 7, and the arc-shaped mouth opener 8 to rotate at a certain angle. The servo motor 13 drives the worm gear 14 to rotate. The worm gear 14 drives the worm wheel 15 to rotate. The worm wheel 15 drives the support shaft 16, the rotating disk 4, the longitudinal support 5, the first support plate 6, the second support plate 7, and the arc-shaped mouth opener 8 to rotate at a certain angle. This facilitates convenient rotation of the mouth opener for use, thus completing the use of the mouth opener.

[0045] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A mouth opener for oral care, characterized in that: The device includes a support frame and a base plate. The base plate is mounted on the top of the support frame. A flip plate is provided on the outside of the base plate. A rotating disk is provided on the outside of the flip plate. A longitudinal support is mounted on the top of the rotating disk. Two sets of first support plates are provided on the outside of the longitudinal support. A second support plate is provided on the outside of each of the first support plates. An arc-shaped support is provided on the outside of each of the second support plates. A stepper motor is mounted on the top of the longitudinal support. A bidirectional threaded rod is mounted on the output end of the stepper motor. The bidirectional threaded rod extends into the interior of the longitudinal support and is movably connected thereto. Threaded sleeves are symmetrically fitted on the surface of the bidirectional threaded rod. Sliding blocks are installed on the surface of each threaded sleeve. A sliding groove is provided on the inner wall of the longitudinal support. The sliding blocks are slidably connected to the sliding groove. The sidewalls of the sliding blocks are all connected to the first support plates. A first elastic limiting rod is movably mounted on the side of the first support plate away from the sliding blocks.

2. The mouth opener for oral care according to claim 1, characterized in that: The end of the first elastic limiting rod away from the first support plate is connected to the second support plate. A first spring is installed on the side wall of the first support plate outside the first elastic limiting rod. The end of the first spring away from the first support plate is connected to the second support plate.

3. The mouth opener for oral care according to claim 2, characterized in that: A second elastic limiting rod is movably installed at the bottom end of the second support plate, and the end of the second elastic limiting rod away from the second support plate is connected to the arc-shaped support device.

4. The mouth opener for oral care according to claim 3, characterized in that: A second spring is installed at the bottom end of the second support plate outside the second elastic limiting rod, and the side of the second spring away from the second support plate is connected to the arc-shaped splinter.

5. The mouth opener for oral care according to claim 4, characterized in that: The first shaft is symmetrically and movably mounted on the side wall of the base plate, and each of the first shafts is fitted with an electric push rod.

6. The mouth opener for oral care according to claim 5, characterized in that: The output end of each electric push rod is movably mounted with a second shaft, and each electric push rod is movably connected to the flip plate through the second shaft.

7. The mouth opener for oral care according to claim 6, characterized in that: A rotating shaft is movably mounted on the side of the flip plate away from the second axis, and the flip plate is movably connected to the base plate through the rotating shaft.

8. The mouth opener for oral care according to claim 7, characterized in that: A support shaft is movably installed at the top center of the flip plate, and the side of the support shaft away from the flip plate is connected to the rotating disk.

9. The mouth opener for oral care according to claim 8, characterized in that: A worm gear is fitted onto the surface of the support shaft, and a servo motor is mounted on the top of the external flip plate of the support shaft.

10. The mouth opener for oral care according to claim 9, characterized in that: The output end of the servo motor is equipped with a worm gear, which meshes with a worm wheel.

Citation Information

Patent Citations

  • Auxiliary mouth dilator for nursing in department of stomatology

    CN221671630U