Mouth gag
By designing self-locking drive components and limiting components, the problems of existing mouth openers being unable to achieve continuous movement and having poor adaptability are solved, enabling stable opening and closing of the oral cavity, adapting to the oral cavity needs of different users, and improving training efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-24
AI Technical Summary
Existing mouth openers have a simple structure, cannot achieve continuous opening and closing movements, are difficult to quantify the degree of oral opening, require manual maintenance of the opening, occupy both hands, and are not very versatile or adaptable, thus failing to meet the needs of maxillofacial restoration design and rehabilitation training.
It adopts a drive component with a self-locking function, and achieves stable opening and closing of the support component through the cooperation of the drive rod and the moving part. It is equipped with a limit component and control module to precisely control the opening and closing distance of the mouth, and is equipped with a pressure sensor and sound module to provide safety alarm. The support plate is designed to match the teeth, and the rotation unit and PWM controller adjust the opening and closing rate.
It achieves stable opening and closing of the oral cavity, adapts to different users' oral cavity sizes and rehabilitation needs, reduces vibration and arm fatigue, improves training efficiency and safety, and enhances the applicability and comfort of the mouth opener.
Smart Images
Figure CN224155822U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of oral rehabilitation equipment, and in particular to an oral mouth opener. Background Technology
[0002] In the treatment of oral diseases, oral mouth openers are commonly used to assist patients. Furthermore, oral mouth openers are also important, even indispensable, medical aids in oral rehabilitation training and maxillofacial reconstruction design.
[0003] Existing mouth opening devices primarily use simple mechanical structures or mechanisms to move the upper and lower jaws, achieving active or passive mouth opening. Although various mouth opening devices exist in clinical practice and on the market, they all suffer from one or more of the following drawbacks: simple structure, maintaining mouth opening only through wedges, fastening bolts, or simple screws, unable to achieve continuous opening and closing movements, and difficult to quantify mouth opening degree, thus hindering their use in further research such as maxillofacial reconstruction design and rehabilitation training.
[0004] Furthermore, existing mouth openers require continuous manual force to maintain the mouth open, making it difficult to maintain the opening degree. They occupy both hands, affecting operation and easily causing arm fatigue, which is not conducive to oral surgery, mouth open training, etc. The structure of mouth openers is relatively fixed, and their design is often aimed at specific functions such as mouth open training, assisting maxillofacial restoration, and assisting clinical surgery, which is not very versatile. Utility Model Content
[0005] To solve, or at least partially solve, the aforementioned technical problems, this application provides an opening device, comprising: a main body housing, with a slide rail formed on the outer surface of the main body housing along its length; a first support member, one end of which is connected to the main body housing; a second support member, one end of which extends into the interior of the main body housing through the slide rail; and a drive assembly disposed inside the main body housing, with the second support member connected to the drive assembly; the drive assembly drives the second support member to move closer to or away from the first support member. The drive assembly includes: a drive rod disposed inside the main body housing; a movable member disposed on the drive rod; the end of the second support member extending into the main body housing is connected to the movable member; rotation of the drive rod drives the movable member to slide the second support member along the slide rail; and the drive assembly is self-locking to lock the position of the second support member after the drive rod stops moving.
[0006] Preferably, the opening device further includes: a limiting component disposed inside the main housing, the limiting component being detachably connected to the drive rod to change the distance the moving part slides along the drive rod; the drive component further includes a rotating unit connected to the drive rod, the rotating unit driving the drive rod to rotate; the outer surface of the drive rod is evenly distributed with threads; the moving part is sleeved on the drive rod, and the moving part and the drive rod are engaged by the threads.
[0007] Preferably, the limiting component includes: a base disposed at the end of the drive rod away from the first support member; a telescopic member disposed on the base and extending and retracting along the length direction of the drive rod; and a blocking part disposed at the end of the telescopic member away from the base and moving along the drive rod under the drive of the telescopic member to limit the sliding of the moving member.
[0008] Preferably, the first support member includes: a first connecting rod, one end of which is connected to the main body shell; and a first support plate, connected to the other end of the first connecting rod. The second support member includes: a second connecting rod, one end of which is connected to the movable member; and a second support plate, connected to the other end of the second connecting rod. The second support plate and the first support plate are symmetrically arranged. Multiple anti-slip protrusions are provided on the opposing surfaces of both the first and second support plates. These multiple anti-slip protrusions form an occlusal area, which matches the shape of a single row of teeth.
[0009] Preferably, the mouth opener further includes: a control module disposed within the main housing; a pressure sensor disposed within the first or second support plate; the pressure sensor being communicatively connected to the control module and transmitting the acquired pressure signal to the control module; and a sound-emitting module being communicatively connected to the control module and emitting an alarm upon receiving an alarm signal from the control module.
[0010] Preferably, the first support plate and the second support plate are rotatably connected to the first connecting rod and the second connecting rod, respectively, and are used to change the included angle between the first support plate and the first connecting rod, and the included angle between the second support plate and the second connecting rod, respectively.
[0011] Preferably, the first support plate includes: a main board body connected to the first connecting rod, and at least two extended wings symmetrically arranged and rotatably connected to the main board body. The second support plate includes: a main board body connected to the second connecting rod, and at least two extended wings symmetrically arranged and rotatably connected to the main board body.
[0012] Preferably, the drive assembly further includes: a knob microcontroller, which is mounted on the main housing; a PWM controller is communicatively connected to the knob microcontroller and to the rotation unit, for receiving voltage signals from the knob microcontroller and converting them into duty cycle signals to be sent to the rotation unit; the rotation unit adjusts its rotation speed according to the received duty cycle signals.
[0013] Preferably, the drive assembly further includes: a direction button, disposed on the outer surface of the main housing, the direction button being communicatively connected to a PWM controller, the PWM controller receiving the direction signal released by the direction button.
[0014] Preferably, the main body housing includes: a handle portion, which is cylindrical, with multiple recesses evenly distributed along its length on the first side of the handle portion, and multiple anti-slip stripes distributed along its length on both sides of the first side, and an emergency stop button provided on the handle portion, which is communicatively connected to the drive assembly.
[0015] Compared to existing technologies, this application utilizes a self-locking drive assembly to prop up the first and second support members of the oral cavity, ensuring that they remain in the target posture unaffected by external forces during the propulsion process. Simultaneously, the structure of the drive rod within the drive assembly ensures the stability of the second support member during movement, reducing the impact of vibrations generated during the propulsion process on the user. Furthermore, the precise control of the propulsion distance between the first and second support members allows for adaptation to different user oral structures, thus facilitating temporomandibular joint rehabilitation. Attached Figure Description
[0016] To more clearly illustrate the embodiments of this application, the relevant drawings will be briefly described below. It is understood that the drawings described below are only for illustrating some embodiments of this application, and those skilled in the art can obtain many other technical features and connections not mentioned herein based on these drawings.
[0017] Figure 1 This is a three-dimensional structural diagram of an opening device according to an embodiment of this application;
[0018] Figure 2 This is a three-dimensional structural diagram of an opening device according to an embodiment of this application;
[0019] Figure 3 This is a three-dimensional structural diagram of an opening device according to an embodiment of this application;
[0020] Figure 4 This is a schematic diagram of the internal structure of an opening device according to an embodiment of this application;
[0021] Figure 5 This is a schematic diagram of the internal structure of an opening device according to an embodiment of this application.
[0022] Explanation of reference numerals in the attached figures:
[0023] 1. Main body shell; 11. Slide rail; 12. Knob microcontroller; 13. Handle; 131. Recessed position; 14. Directional button; 21. First support plate; 22. Second support plate; 23. First connecting rod; 24. Second connecting rod; 3. Drive assembly; 31. Drive rod; 32. Moving part; 33. Rotation unit; 4. Control module. Detailed Implementation
[0024] The present application will now be described in detail with reference to the accompanying drawings.
[0025] Existing mouth opening devices primarily use simple mechanical structures or mechanisms to move the upper and lower jaws, achieving active or passive mouth opening. Although various mouth opening devices exist in clinical practice and on the market, they all suffer from one or more of the following drawbacks: simple structure, maintaining mouth opening only through wedges, fastening bolts, or simple screws, unable to achieve continuous opening and closing movements, and difficult to quantify mouth opening degree, thus hindering their use in further research such as maxillofacial reconstruction design and rehabilitation training.
[0026] Furthermore, existing mouth openers require continuous manual force to maintain the mouth open, making it difficult to maintain the opening degree. They occupy both hands, affecting operation and easily causing arm fatigue, which is not conducive to oral surgery, mouth open training, etc. The structure of mouth openers is relatively fixed, and their design is often aimed at specific functions such as mouth open training, assisting maxillofacial restoration, and assisting clinical surgery, which is not very versatile.
[0027] Furthermore, the existing mouth openers have a fixed range of movement and cannot be adapted to different users. Different models of mouth openers need to be configured for users with different oral cavity sizes, resulting in poor adaptability of the mouth openers, which increases the preparation and manufacturing costs of molds.
[0028] In view of this, the first embodiment of this application proposes an opening device to solve the above-mentioned technical problems.
[0029] First Implementation Method
[0030] refer to Figure 1 , Figure 2 This application provides an opening device, comprising: a main body housing 1, with a slide rail 11 formed on the outer surface of the main body housing 1 along its length; a first support member, one end of which is connected to the main body housing 1; a second support member, one end of which extends into the interior of the main body housing 1 through the slide rail 11; and a drive assembly 3, disposed inside the main body housing 1, with the second support member connected to the drive assembly 3; the drive assembly 3 drives the second support member to move closer to or away from the first support member. The drive assembly 3 includes: a drive rod 31, disposed inside the main body housing 1; a movable member 32, disposed on the drive rod 31; the end of the second support member extending into the main body housing 1 is connected to the movable member 32; the drive rod 31 rotates to drive the movable member 32 to slide the second support member along the slide rail 11; and the drive assembly 3 is self-locking to lock the position of the second support member after the drive rod 31 stops driving.
[0031] In this application, the first support member is fixedly connected to the main body shell 1, therefore, the opening and closing operations of the opening device can be achieved simply by controlling the movement of the second support member. (See also...) Figure 4 and Figure 5 When the mouth opener needs to be opened or closed, the drive assembly 3 is activated, and the drive rod 31 rotates. During the rotation of the drive rod 31, the moving part 32 rotates along it. Simultaneously, the second support connected to the moving part 32 moves along with it. Driven by the moving part 32, the second support moves closer to or further away from the first support. Specifically, before mouth opening training begins, the first and second supports are first placed together to reduce the mouth opening width when placed in the user's mouth. After placing the first and second supports in the user's mouth, the user's upper and lower teeth will contact the first and second supports respectively. By controlling the drive assembly 3, the second support moves the teeth it contacts, thereby rotating the temporomandibular joint and opening the mouth. The stepless movement of the moving part 32 driven by the drive rod 31 ensures that the second support remains stable during movement, thus stably opening the user's mouth. Once the user's mouth is stretched to its limit, if multiple opening and closing exercises are required within this limit, the second support needs to move back and forth towards the first support within the target range to achieve the training of opening and closing the mouth.
[0032] Furthermore, since some temporomandibular joint users are unable to fully open their mouths for extended periods, it is necessary to support the user's mouth in an open state after the mouth opener is activated, allowing the mouth to gradually adapt and return to an open state. The self-locking drive component 3 can hold the second support member stationary after it has moved to the target position. Simultaneously, during the process of supporting the mouth, the first and second supports are subjected to closing forces from the user's mouth. The self-locking drive component 3 also ensures that the second support member is not affected by these closing forces, maintaining an optimal open posture at all times, thereby ensuring the user's training effect and quality.
[0033] Second Implementation Method
[0034] In the first embodiment of this application, an oral mouth opener is disclosed, which stably drives a second support member via a drive component 3. This driving method ensures that the second support member and the first support member can stably move closer or further apart while maintaining a constant distance between them, thereby effectively acting on the user's oral cavity. However, considering that different users have varying degrees of temporomandibular joint damage and that their original oral opening sizes are also different, the range of oral opening may gradually increase during rehabilitation as training progresses. This also means that the reciprocating range of motion of the second support member needs to be gradually expanded accordingly. Therefore, when using the oral mouth opener of the first embodiment, it is necessary to find and attempt the extreme positions during each movement to adapt to the dynamic needs of the user's oral cavity.
[0035] In view of this, the improvement of the second embodiment of this application compared with the first embodiment is that the opening device further includes: a limiting component, which is disposed inside the main body housing 1. The limiting component is detachably connected to the drive rod 31 to change the sliding distance of the moving member 32 along the drive rod 31. The drive component 3 further includes a rotating unit 33, which is connected to the drive rod 31. The rotating unit 33 drives the drive rod 31 to rotate. The outer surface of the drive rod 31 is evenly distributed with threads. The moving member 32 is sleeved on the drive rod 31. The moving member 32 and the drive rod 31 are engaged by threads.
[0036] When the second support reaches its limit position, it indicates that the user's mouth has reached its maximum opening. Subsequent mouth training should be conducted within this limit, enhancing oral adaptability and flexibility through repeated opening and closing exercises. The limiting component prevents excessive sliding of the moving part 32, thus avoiding the second support moving uncontrollably away from the first support and ensuring that the movement of the moving part 32 on the drive rod 31 remains within the preset limit opening position. Based on the preset limit range, the second support can be controlled to continuously move closer to or further away from the first support. The user simply needs to follow the guidance of the first and second supports to perform mouth opening and closing exercises. In this way, the user does not need to worry about the movement of the second support exceeding the limits of their mouth, allowing them to focus more on improving the frequency and efficiency of opening and closing training.
[0037] Furthermore, the limiting component includes: a base disposed at the end of the drive rod 31 away from the first support member; a telescopic member disposed on the base and extending and retracting along the length of the drive rod 31; and a blocking part disposed at the end of the telescopic member away from the base and moving along the drive rod 31 under the drive of the telescopic member to limit the sliding of the moving member 32.
[0038] When the second support reaches its corresponding oral cavity limit position, the control limiting component is activated. At this time, the telescopic component on the base pushes the blocking part along the rotating rod towards the first support until it contacts the second support. Once the blocking part abuts against the second support, the telescopic component stops working, limiting the range of motion of the second support by the blocking part, allowing it to reciprocate within the adjusted range, thereby assisting the user in completing oral cavity opening and closing training. This design is adaptively adjusted for different users' oral cavity opening sizes and treatment progress, significantly improving training efficiency and the applicability of the mouth opener.
[0039] Furthermore, in some embodiments, the driving distance of the drive component 3 can be precisely adjusted by the control module 4 to flexibly meet the needs of different opening widths. Specifically, the control module 4 is disposed inside the main body housing 1, and it is communicatively connected to the rotation unit 33 of the drive component 3; while a limit button is provided on the outside of the main body housing 1, which is also communicatively connected to the control module 4. In actual operation, when the second support reaches the limit position of the oral cavity opening, the user only needs to press the limit button, and the control module 4 will receive the instruction and immediately send a corresponding instruction to the drive component 3, while recording the specific number of rotations of the rotation unit 33. During opening training, the control module 4 will fix the number of rotations of the rotation unit 33 based on the recorded data, thereby indirectly limiting the movement distance of the second support. If it is necessary to release the restriction on the rotation unit 33, the user can press the limit button again, at which point the second support can return to an unrestricted movement state.
[0040] In addition, refer to Figure 1 , Figure 2 , Figure 3 As shown, the first support member includes: a first connecting rod 23, one end of which is connected to the main body shell 1; and a first support plate 21, which is connected to the other end of the first connecting rod 23. The second support member includes: a second connecting rod 24, one end of which is connected to the moving member 32; and a second support plate 22, which is connected to the other end of the second connecting rod 24. The second support plate 22 and the first support plate 21 are symmetrically arranged. Multiple anti-slip protrusions are provided on the opposing surfaces of the first support plate 21 and the second support plate 22. These multiple anti-slip protrusions form a biting area, which matches the shape of a single row of teeth.
[0041] Patients undergoing temporomandibular joint (TMJ) repair may experience damage at the junction of the temporomandibular joint and jaw joint during rehabilitation. Slow and steady movements are necessary to promote the recovery of these damaged areas and help restore normal occlusal function. Therefore, during mouth opening exercises, the first and second supports should apply even external force to the upper and lower teeth in the mouth. This even force application helps to distribute the force evenly at the joint connection, thereby reducing displacement problems that may be caused by uneven force distribution. Specifically, the first connecting rod 23 and the second connecting rod 24 respectively support the first support plate 21 and the second support plate 22. The first support plate 21 and the second support plate 22 then support the upper and lower teeth in the mouth, respectively, and distribute the external force evenly to the upper and lower teeth in this process. In this way, the upper and lower teeth receive even external force, thus ensuring that the junction of the temporomandibular joint and jaw joint also receives even force, creating favorable conditions for the smooth recovery of the joint.
[0042] Furthermore, the occlusal area formed by the anti-slip protrusions on the first support plate 21 and the second support plate 22 increases the friction between the teeth and the support plates when the upper and lower teeth bite together. This effectively reduces displacement between the teeth and the support plates even during oral opening and closing movements, thereby further enhancing the effectiveness of mouth opening training and ensuring a smooth rehabilitation process.
[0043] Furthermore, the opening device also includes: a control module 4, disposed within the main housing 1; a pressure sensor, disposed within the first support plate 21 or the second support plate 22; the pressure sensor being communicatively connected to the control module 4, and transmitting the acquired pressure value signal to the control module 4; and a sound-emitting module being communicatively connected to the control module 4, which emits an alarm upon receiving an alarm signal from the control module 4.
[0044] In the initial stages of mouth-opening training, because the muscles at the junction of the temporomandibular joint and the jaw joint are not yet fully developed, the process of opening the mouth relies more heavily on the external force applied by the mouth opener. In this situation, the first support plate 21 and the second support plate 22 may need to withstand significant external force. The opening force of the first support plate 21 and the second support plate 22 is mainly provided by the drive assembly 3; excessive load may damage the drive assembly 3. To address this issue, this design incorporates pressure sensors that can detect the external force borne by the first support plate 21 and the second support plate 22 in real time and feed the detected force value back to the control module 4. When the pressure sensor detects that the external force borne by the first support plate 21 and the second support plate 22 exceeds a preset safety threshold, the control module 4 will issue a warning signal through its controlled sound module. This timely warning reminds the user to avoid continuously applying excessive pressure, thereby preventing damage to the mouth opener due to overload and ensuring its continued normal use. This function not only improves the safety of mouth-opening training but also extends the lifespan of the mouth opener.
[0045] Third Implementation Method
[0046] In the second embodiment, an oral mouth opener is proposed, which features an adjustable limit for the movement of the second support plate 22, thereby adapting to the oral cavity size and needs of different users. However, it needs to be considered that different users have different mouth sizes, and that during the opening of the mouth, the upper and lower teeth do not move in a straight line in the vertical direction, but rather along an arc trajectory. Therefore, as the first support plate 21 and the second support plate 22 gradually move further apart, an angle will gradually form between the support plate and the teeth. This design needs to fully consider the arc-shaped movement trajectory and the change in angle to ensure that the oral mouth opener can adapt to the user's personalized needs, while ensuring comfort and stability during use.
[0047] In view of this, the improvement of the third embodiment of this application compared to the second embodiment is that, referring to... Figure 1 , Figure 2 , Figure 3 The first support plate 21 and the second support plate 22 shown are rotatably connected to the first connecting rod 23 and the second connecting rod 24, respectively, and are used to change the included angle between the first support plate 21 and the first connecting rod 23, and the included angle between the second support plate 22 and the second connecting rod 24.
[0048] During the opening process of the mouth opener, as the first support plate 21 and the second support plate 22 gradually move away from each other, the two plates will rotate independently. The purpose of this rotation is to ensure that the first support plate 21 and the second support plate 22 can always maintain a close fit with the upper and lower teeth. This design not only optimizes the support effect of the mouth opener, but also improves the comfort and stability during use.
[0049] Simultaneously, during oral closure, the first support plate 21 and the second support plate 22 rotate accordingly. This synchronized rotation ensures that the support plates maintain a good fit with the teeth during closure. This design helps to distribute force evenly at the temporomandibular joint during closure, reducing discomfort caused by concentrated local pressure, thereby improving the overall effectiveness of the mouth opener and the user's comfort.
[0050] Furthermore, the first support plate 21 includes: a main body connected to the first connecting rod 23, and at least two extended wings symmetrically arranged and rotatably connected to the main body. The second support plate 22 includes: a main body connected to the second connecting rod 24, and at least two extended wings symmetrically arranged and rotatably connected to the main body.
[0051] Considering the varying oral cavity sizes of different users, especially during rehabilitation exercises where the opening and closing of the mouth may gradually increase, this mouth opener employs a main body and an extension wing design to address this issue. Specifically, by adjusting the extension wing's extension extent, it can flexibly adapt to users with different oral cavity sizes. This design not only increases the compatibility of the first support plate 21 and the second support plate 22 but also effectively avoids the problem of support plates being too large to be fully inserted into the user's mouth. By appropriately extending the extension wing, the mouth opener can better adapt to individual user differences, providing a more fitting and comfortable support effect, thereby ensuring the user obtains the best user experience during rehabilitation exercises.
[0052] In addition, refer to Figure 1 , Figure 2 The drive assembly 3 shown also includes: a knob microcontroller 12, which is mounted on the main housing 1. The PWM controller is communicatively connected to the knob microcontroller 12 and to the rotation unit 33. It is used to receive the voltage signal emitted by the knob microcontroller 12 and convert it into a duty cycle signal to be sent to the rotation unit 33. The rotation unit 33 adjusts the rotation speed according to the received duty cycle signal.
[0053] For users at different stages of rehabilitation, the opening and closing rate requirements of mouth openers vary significantly. Especially in the later stages of rehabilitation, as the temporomandibular joint connection has fully recovered, users demand a higher opening and closing frequency from the mouth opener to more closely approximate or simulate normal chewing. To meet these different needs, a knob microcontroller 12 is integrated into the mouth opener. This controller adjusts the voltage across the PWM controller, allowing the PWM controller to generate different duty cycle signals based on voltage changes. These duty cycle signals directly affect the rotating unit 33, precisely regulating its rotation speed by controlling the duty cycle. Changes in the speed of the rotating unit 33, in turn, affect the movement speed of the second support plate 22. In this way, the mouth opener can flexibly adjust its performance according to the user's rehabilitation stage, meeting the needs of different stages and significantly improving the product's applicability and user experience. This intelligent design not only enhances the functionality of the mouth opener but also provides users with a more personalized and efficient service.
[0054] Meanwhile, the drive component 3 also includes: a direction button 14, which is disposed on the outer surface of the main body housing 1. The direction button 14 is communicatively connected to the PWM controller, and the PWM controller receives the direction signal released by the direction button 14.
[0055] This mouth opener cleverly incorporates a directional button 14 on the outer surface of its main housing 1. Users can easily control the second support plate 22 to move closer to or further away from the first support plate 21 by simply pressing the button. This design greatly simplifies operation, allowing for convenient one-handed operation. Users can easily achieve various functions of the mouth opener by pressing the directional button 14 according to their needs. Whether adjusting the spacing of the support plates or performing other operations, users can quickly achieve their goals through convenient button control. This intuitive and easy-to-use design makes operating the mouth opener effortless and greatly enhances the user experience.
[0056] Furthermore, refer to Figure 1 , Figure 2 , Figure 3 As shown, the main body housing 1 includes: a handle part 13, which is cylindrical. Multiple recesses 131 are evenly distributed along the length direction on the first side of the handle part 13. Multiple anti-slip stripes are distributed along the length direction on both sides of the first side. An emergency stop button is provided on the handle part 13, and the emergency stop button is communicatively connected to the drive assembly 3.
[0057] The handle 13 is designed with the user's grip needs in mind when operating the mouth opener. The recessed area 131 allows the user's fingers to fit naturally, increasing the contact area between the fingers and the handle 13. This design not only improves grip comfort but also enhances stability. Simultaneously, the application of anti-slip stripes further increases friction between the hand and the mouth opener, effectively reducing the risk of the mouth opener slipping out of the hand during operation. Furthermore, the handle 13 is equipped with an emergency stop button, a crucial feature in emergencies. Especially during initial mouth opener training, users need to understand their oral cavity opening limits. When the distance between the first support plate 21 and the second support plate 22 exceeds the user's oral cavity limits, the user can quickly press the emergency stop button to immediately stop the mouth opener operation, ensuring safety. This handle 13 design, integrating an emergency stop function, not only ensures user safety but also improves the reliability of the mouth opener during use.
[0058] Finally, it should be noted that those skilled in the art will understand that many technical details have been presented in the embodiments of this application to facilitate a better understanding of the present application. However, even without these technical details and various changes and modifications based on the above embodiments, the technical solutions claimed in the claims of this application can be substantially achieved. Therefore, in practical applications, various changes can be made to the above embodiments in form and detail without departing from the spirit and scope of this application.
Claims
1. An opening device, characterized in that, The opening device includes: The main body shell (1) has a slide rail (11) on its outer surface along its length direction; The first support member is connected at one end to the main body shell (1); The second support member extends into the interior of the main body shell (1) through the slide (11) at one end; A drive assembly (3) is disposed inside the main body housing (1), and the second support member is connected to the drive assembly (3); the drive assembly (3) drives the second support member to move closer to or away from the first support member; The driving component (3) includes: A drive rod (31) is disposed inside the main body housing (1); A movable member (32) is disposed on the drive rod (31). One end of the second support member extends into the main body housing (1) and is connected to the movable member (32). The drive rod (31) rotates to drive the movable member (32) to drive the second support member to slide along the slide rail (11). The drive assembly (3) is self-locking to lock the position of the second support member after the drive rod (31) stops driving.
2. The opening device according to claim 1, characterized in that, The opening device also includes: A limiting component is disposed inside the main body housing (1). The limiting component is detachably connected to the drive rod (31) to change the distance by which the moving part (32) slides along the drive rod (31). The driving component (3) also includes: A rotating unit (33) is connected to the driving rod (31), and the rotating unit (33) drives the driving rod (31) to rotate; The outer surface of the drive rod (31) is uniformly distributed with threads, and the moving part (32) is sleeved on the drive rod (31). The moving part (32) and the drive rod (31) are engaged by the threads.
3. The opening device according to claim 2, characterized in that, The limiting component includes: The base is located at the end of the drive rod (31) away from the first support member; A telescopic component is provided on the base, and the telescopic component extends and retracts along the length direction of the drive rod (31); A blocking part is provided at the end of the telescopic member away from the base, and moves along the drive rod (31) under the drive of the telescopic member to restrict the sliding of the moving member (32).
4. The opening device according to claim 1, characterized in that, The first support member includes: The first connecting rod (23) is connected at one end to the main body shell (1); The first support plate (21) is connected to the other end of the first connecting rod (23); The second support member includes: The second connecting rod (24) is connected at one end to the moving part (32); The second support plate (22) is connected to the other end of the second connecting rod (24); The second support plate (22) is symmetrically arranged with the first support plate (21). Multiple anti-slip protrusions are provided on the surfaces of the first support plate (21) and the second support plate (22) that are opposite to each other. The multiple anti-slip protrusions form a biting area, and the biting area matches the shape of a single row of teeth.
5. The opening device according to claim 4, characterized in that, The opening device also includes: The control module (4) is disposed inside the main body housing (1); A pressure sensor is disposed in the first support plate (21) or the second support plate (22). The pressure sensor is communicatively connected to the control module (4). The pressure sensor is used to transmit the acquired pressure value signal to the control module (4). The sound-emitting module is communicatively connected to the control module (4). The sound-emitting module emits an alarm after receiving the alarm signal emitted by the control module (4).
6. The opening device according to claim 4, characterized in that, The first support plate (21) and the second support plate (22) are rotatably connected to the first connecting rod (23) and the second connecting rod (24), respectively, and are used to change the included angle between the first support plate (21) and the first connecting rod (23), and the included angle between the second support plate (22) and the second connecting rod (24).
7. The opening device according to claim 6, characterized in that, The first support plate (21) includes: The motherboard body is connected to the first connecting rod (23); At least two extended wings are symmetrically arranged and rotatably connected to the mainboard body; The second support plate (22) includes: The motherboard body is connected to the second connecting rod (24); At least two extended wings are symmetrically arranged and rotatably connected to the mainboard body.
8. The opening device according to claim 2, characterized in that, The driving component (3) also includes: A knob microcontroller (12) is mounted on the main body housing (1); The PWM controller is communicatively connected to the knob microcontroller (12) and the rotation unit (33). It is used to receive the voltage signal sent by the knob microcontroller (12) and convert it into a duty cycle signal and send it to the rotation unit (33). The rotation unit (33) adjusts the rotation speed according to the received duty cycle signal.
9. The opening device according to claim 8, characterized in that, The driving component (3) also includes: A directional button (14) is disposed on the outer surface of the main body housing (1). The directional button (14) is communicatively connected to the PWM controller, and the PWM controller receives the directional signal released by the directional button (14).
10. The opening device according to claim 1, characterized in that, The main body shell (1) includes: The handle (13) is cylindrical. Multiple recesses (131) are evenly distributed along the length direction on the first side of the handle (13). Multiple anti-slip stripes are distributed along the length direction on both sides of the first side. An emergency stop button is provided on the handle (13), and the emergency stop button is communicatively connected to the drive component (3).