Dental chair with pitching safety protection and motion compensation functions

Abstract

According to the dental chair with the pitching safety protection and motion compensation functions, the lower end of a backrest bent plate of a pitching part is located between two first lug plates on the bottom face of a backrest swing frame, and the backrest bent plate and the backrest swing frame are connected into a whole through anti-collision motion connecting assemblies arranged on the first lug plates; a telescopic motor in the pitching driving device is electrically connected with an anti-collision protection switch assembly mounted on the backrest bent plate and the backrest swing frame, and when the backrest part encounters an obstacle in the downward moving process, an anti-collision movement connecting assembly triggers the anti-collision protection switch assembly and controls the telescopic motor to stop while providing movement compensation; two second lug plates used for being hinged to the telescopic end of the telescopic motor are fixed to the middle of the backrest swing frame. The dental chair overcomes the defect that a traditional dental chair cannot cope with the situation that a backrest collides with a barrier in time, eliminates potential safety hazards existing in the use process of the dental chair, effectively protects safety of patients and medical staff, guarantees safety of equipment, is good in anti-collision effect, and improves comfort experience of the patients during diagnosis and treatment.

Description

Technical Field

[0001] The utility model belongs to the technical field of dental chairs, and in particular relates to a dental chair with pitch safety protection and motion compensation functions. Background Art

[0002] In recent years, dental treatment has placed increasing emphasis on patient safety and comfort. Patients are increasingly concerned with the dental chair's backrest's collision avoidance and motion compensation. For example, if the backrest encounters an obstacle while lowering, the patient can't react quickly enough, causing damage to the dental chair and severely impacting the patient's experience. Therefore, a dental chair with pitch safety protection and motion compensation is essential. Utility Model Content

[0003] The technical problem solved by the present invention is to provide a dental chair with pitch safety protection and motion compensation functions, which adopts an anti-collision motion connection component to connect the backrest bending plate and the backrest swing frame with a small rotation, and at the same time installs an anti-collision protection switch component on the backrest bending plate and the backrest swing frame, so as to provide a compensation motion range for the backrest bending plate that encounters an obstacle during the downward movement, and provide detection control conditions for stopping the pitching movement, thereby solving the problem that traditional dental chairs cannot respond to the backrest encountering obstacles in time, eliminating the safety hazards in the use of dental chairs, effectively protecting the safety of patients and medical staff, and also ensuring the safety of equipment, with simple structure, novel design, low cost, good anti-collision effect, and improved patient comfort experience during diagnosis and treatment, and with high use value.

[0004] The technical solution adopted by the utility model is as follows: a dental chair with pitching safety protection and motion compensation functions, comprising a lifting part that plays a supporting role, a pitching part installed on the lifting part, a backrest part connected to the pitching part, and a headrest part installed on the upper end of the backrest part. Both sides of the pitching part are provided with armrests for the convenience of the patient to stand up or lie down. The pitching part comprises a backrest bent plate fixedly connected to the backrest part at the upper end, a backrest swing frame connected to the lower end of the backrest bent plate at the lower end, a base hinged at one end to the upper end of the backrest swing frame, and a pitching mechanism installed on the base and used to drive the backrest bent plate to pitch. The pitch drive device, the lower end of the backrest bent plate is located between the two ear plates 1 on the bottom surface of the backrest swing frame, and the backrest bent plate and the backrest swing frame are connected as a whole through the anti-collision motion connection component provided on the ear plate 1, the telescopic motor in the pitch drive device is electrically connected to the anti-collision protection switch component installed on the backrest bent plate and the backrest swing frame, and when the backrest part encounters an obstacle during the downward movement, the anti-collision motion connection component provides motion compensation while triggering the anti-collision protection switch component and controlling the telescopic motor to stop; two ear plates 2 for being hinged to the telescopic end of the telescopic motor are fixed in the middle of the backrest swing frame.

[0005] Among them, the anti-collision motion connection component includes a fixing screw and a rotating shaft. The fixing screw passes through the through hole on the ear plate 1 and is threadedly connected to the corresponding position of the backrest bent plate, so that the backrest bent plate rotates around the axis of the fixing screw. The rotating shaft passes through the large through hole on the ear plate 1 and the through hole on the backrest bent plate and is connected to the cotter pin. When the backrest part hits an obstacle, the backrest bent plate rotates slightly around the axis of the fixing screw under the limiting action of the large through hole, and then the anti-collision protection switch component is triggered.

[0006] Furthermore, the anti-collision protection switch assembly includes a micro switch and a protection plate. The micro switch is installed on the upper end surface of the horizontal plate of the backrest swing frame, and the protection plate that contacts the roller on the micro switch is fixed on the backrest curved plate. When the backrest part hits an obstacle, the backrest curved plate drives the protection plate to rotate slightly clockwise along the axis of the fixing screw and then move away from the roller on the micro switch to trigger the micro switch.

[0007] Furthermore, the protective plate is a Z-shaped plate, and two parallel waist-shaped holes are made on the lower end plate surface of the protective plate, and the bolts passing through the waist-shaped holes are adapted to connect with the backrest curved plate, so as to realize an adjustable fixed connection of the protective plate on the backrest curved plate, and the upper end plate of the protective plate contacts the roller on the micro switch.

[0008] Furthermore, the pitch drive device includes a telescopic motor and a connecting rod mechanism. The telescopic motor is installed in the middle of the right end of the base, and the telescopic end of the telescopic motor is hinged to the middle of the lower end of the backrest swing frame. Connecting rod mechanisms are provided on both side walls of the front and rear roads of the middle seat frame. The left end of the connecting rod mechanism is fixedly connected to the backrest swing frame, and the right end of the connecting rod mechanism is hinged to the corresponding side of the base.

[0009] Furthermore, the connecting rod mechanism includes a driving rod, a linkage rod (and a connecting rod, the left end of the driving rod is fixedly connected to the backrest swing frame, and the right end of the driving rod is hinged to the left end of the linkage rod, the right end of the linkage rod is hinged to the side wall of the corresponding side of the middle seat frame, one end of the connecting rod is hinged to the right end of the linkage rod, and the other end of the connecting rod is hinged to the corresponding side of the base.

[0010] The advantages of this utility model compared with the prior art are:

[0011] 1. This technical solution uses an anti-collision motion connection component to connect the backrest curved plate and the backrest swing frame with a small rotation, providing the required reverse rotation compensation range for the backrest part that encounters obstacles, ensuring the safety and reliability of the equipment during use and improving the patient's comfort experience during diagnosis and treatment;

[0012] 2. This technical solution installs the anti-collision protection switch assembly on the backrest curved plate and the backrest swing frame to provide detection and control conditions for stopping the pitching movement;

[0013] 3. This technical solution uses multiple connecting rod mechanisms in the pitch part to achieve motion compensation between the base and the backrest curved plate during pitch movement, providing patients with the best comfort experience at different treatment positions, alleviating muscle fatigue during long-term treatment, and improving the comfort experience during diagnosis and treatment.

[0014] 4. This technical solution has a simple structure and novel design. It solves the problem that traditional dental chairs cannot respond in time to the backrest hitting obstacles, eliminates the safety hazards during the use of dental chairs, effectively protects the safety of patients and medical staff, and can also ensure the safety of equipment. It has low cost, good anti-collision effect, and improves the patient's comfort experience during diagnosis and treatment, and has high use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure of the backrest bending plate and the backrest swing frame with the anti-collision protection switch component and the anti-collision movement connection component of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the pitch drive device of the utility model DETAILED DESCRIPTION

[0018] The following is a combination of the embodiments of the present invention Figure 1-3 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0019] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate positions or relationships based on those shown in the accompanying drawings. These are intended only to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] As used herein, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the elements.

[0021] Dental chairs with pitch safety protection and motion compensation functions, such as Figure 1-3 As shown, it includes a lifting part 1 that plays a supporting role, a pitching part 2 installed on the lifting part 1, a backrest part 3 connected to the pitching part 2, and a headrest part 4 installed on the upper end of the backrest part 3. Both sides of the pitching part 2 are provided with armrests 5 for the patient to stand up or lie down. The pitching part 2 includes a backrest bent plate 2-1 fixedly connected to the backrest part 3 at the upper end, a backrest swing frame 2-2 connected to the lower end of the backrest bent plate 2-1 at the lower end, and one end connected to the upper end of the backrest swing frame 2-2. The hinged base 2-3 and the pitch driving device installed on the base 2-3 and used for driving the pitch of the backrest bent plate 2-1, wherein the specific structures of the lifting part 1, the backrest part 3 and the headrest part 4 are existing technologies and are not described here in detail; the lower end of the backrest bent plate 2-1 is located between the two ear plates 2-15 on the bottom surface of the backrest swing frame 2-2, and the backrest bent plate 2-1 and the backrest swing frame 2-2 are connected as a whole through the anti-collision motion connecting component provided on the ear plate 2-15, so The telescopic motor 2-9 in the pitch drive device is electrically connected to the anti-collision protection switch assembly installed on the backrest bending plate 2-1 and the backrest swing frame 2-2, and when the backrest part 3 encounters an obstacle during the downward movement, the anti-collision motion connection assembly provides motion compensation while triggering the anti-collision protection switch assembly and controlling the telescopic motor 2-9 to stop; two ear plates 2-10 are fixed in the middle of the backrest swing frame 2-2 for hinged connection with the telescopic end of the telescopic motor 2-9; in the above structure, the anti-collision motion connection assembly is used to connect the backrest bending plate 2-1 and the backrest swing frame 2-2 with a small rotation, providing the required reverse rotation compensation range for the backrest part 3 that encounters an obstacle, and the anti-collision protection switch assembly is installed on the backrest bending plate 2-1 and the backrest swing frame 2-2 to provide detection and control conditions for stopping the pitch movement, thereby ensuring the safety and reliability of the equipment during use, improving the patient's comfort experience during diagnosis and treatment, and solving the problem that traditional dental chairs cannot respond to backrest encountering obstacles in a timely manner;

[0022] like Figure 2As shown, the specific structure of the anti-collision motion connection assembly is as follows: the anti-collision motion connection assembly includes a fixing screw 2-4 and a rotating shaft 2-5, the fixing screw 2-4 passes through the through hole on the ear plate 2-15 and is threadedly connected to the corresponding position of the backrest bent plate 2-1, so that the backrest bent plate 2-1 rotates around the axis of the fixing screw 2-4, the rotating shaft 2-5 passes through the large through hole on the ear plate 2-15 and the through hole on the backrest bent plate 2-1 and is connected to the cotter pin, and when the backrest part 3 hits an obstacle, the backrest bent plate 2-1 is limited by the large through hole to achieve a small rotation around the axis of the fixing screw 2-4, and then trigger the anti-collision protection switch assembly.

[0023] The specific structure of the anti-collision protection switch assembly is as follows: the anti-collision protection switch assembly includes a micro switch 2-6 and a protection plate 2-7, the micro switch 2-6 is installed on the upper end surface of the horizontal plate of the backrest swing frame 2-2, and the protection plate 2-7 in contact with the roller on the micro switch 2-6 is fixed on the backrest bending plate 2-1, and when the backrest part 3 encounters an obstacle, the backrest bending plate 2-1 drives the protection plate 2-7 to rotate slightly clockwise along the axis of the fixing screw 2-4 and then move away from the roller on the micro switch 2-6 to trigger the micro switch 2-6; using the above structure, the displacement of the upper end of the backrest bending plate 2-1 when it moves downward and encounters an obstacle and moves slightly upward is reflected on the protection plate 2-7, and then displayed by the starting state of the micro switch 2-6, thereby providing a control basis for the rise of the lifting part 1 and the stop of the telescopic stop 2-9 according to the on-off state of the micro switch 2-6, ensuring that the dental chair pitching and lifting process is stable, reliable and safe, and providing patients with a comfortable treatment experience.

[0024] The specific shape and installation structure of the protection plate 2-7 are as follows: the protection plate 2-7 is a Z-shaped plate, and two parallel waist-shaped holes 2-8 are made on the lower end plate surface of the protection plate 2-7, and the bolts passing through the waist-shaped holes 2-8 are adapted to connect with the backrest bending plate 2-1, so as to realize the fixed connection of the protection plate 2-7 on the backrest bending plate 2-1 with adjustable position, and the upper end plate of the protection plate 2-7 is in contact with the roller on the micro switch 2-6; by adopting the above structure, the fixed position of the protection plate 2-7 can be adjusted, and it is ensured that the roller on the micro switch 2-6 is in contact with the protection plate 2-7, so as to realize the accurate reflection of the position information of the backrest bending plate 2-1 through the protection plate 2-7, and timely detection through the micro switch 2-6.

[0025] The specific structure of the pitch drive device is as follows: the pitch drive device includes a telescopic motor 2-9 and a connecting rod mechanism, the telescopic motor 2-9 is installed in the middle of the right end of the base 2-3, and the telescopic end of the telescopic motor 2-9 is hinged to the middle of the lower end of the backrest swing frame 2-2, and a connecting rod mechanism is provided on both side walls of the front and rear roads of the middle seat frame 2-11, the left end of the connecting rod mechanism is fixedly connected to the backrest swing frame 2-2, and the right end of the connecting rod mechanism is hinged to the corresponding side of the base 2-3; specifically, the connecting rod mechanism includes a driving rod 2-12, a linkage rod (2-13 and a connecting rod 2-14, the left end of the driving rod 2-12 is fixedly connected to the backrest swing frame 2-2, and the right end of the driving rod 2-12 is hinged to the left end of the linkage rod 2-13, and the right end of the linkage rod 2-13 is hinged to the right side of the middle seat frame 2-11 On the side wall, one end of the connecting rod 2-14 is hinged to the right end of the linkage rod 2-13, and the other end of the connecting rod 2-14 is hinged to the corresponding side of the base 2-3; in the above structure, a pitching drive device composed of a telescopic motor 2-9 and a connecting rod mechanism is adopted. Under the drive of the telescopic motor 2-9, the connecting rod mechanism drives the base 2-3 and the backrest curved plate 2-1 to perform a pitching movement, thereby conveniently and reliably adjusting the patient's diagnosis and treatment position and providing adjustment conditions for the patient's optimal diagnosis and treatment position; by adopting multiple connecting rod mechanisms in the pitching part 2, motion compensation is formed between the base 2-3 and the backrest curved plate 2-1 during the pitching movement, which can provide the patient with the best comfort experience at different treatment positions, relieve the patient's muscle fatigue during long-term treatment, and improve the comfort experience during diagnosis and treatment;

[0026] When it is necessary to adjust the backrest part 3 downward, start the telescopic motor 2-9. Driven by the telescopic motor 2-9, the connecting rod mechanism drives the base 2-3 and the backrest curved plate 2-1 to perform a pitching movement, thereby conveniently and reliably adjusting the patient's diagnosis and treatment position, and providing adjustment conditions for the patient's optimal diagnosis and treatment position; during the descent process of the upper end of the backrest part 3, if it encounters an obstacle, the backrest curved plate 2-1 moves up. At this time, the protective plate 2-7 at the lower end of the backrest curved plate 2-1 rotates slightly around the axis of the fixing screw 2-4 and moves down and away from the roller on the micro switch 2-6. At this time, the micro switch 2-6 triggers and controls the telescopic motor 2-9 to stop, so that the lifting part 1 starts and controls the pitching part 2 and the backrest part 3 to rise slightly as a whole, so that the backrest part 3 is away from the force point, protecting the safety of patients and medical staff, and ensuring the safety of equipment at the same time.

[0027] This technical solution has a simple structure and novel design, which eliminates the safety hazards in the use of dental chairs, effectively protects the safety of patients and medical staff, and can also ensure the safety of equipment. It has low cost, good anti-collision effect, and improves the comfort experience of patients during diagnosis and treatment. It has high use value.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0029] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A dental chair with pitch safety protection and motion compensation functions, comprising a lifting part (1) that plays a supporting role, a pitch part (2) installed on the lifting part (1), a backrest part (3) connected to the pitch part (2), and a headrest part (4) installed on the upper end of the backrest part (3), wherein both sides of the pitch part (2) are provided with armrests (5) for facilitating the patient to stand up or lie down, the pitch part (2) comprises a backrest bending plate (2-1) fixedly connected to the backrest part (3) at its upper end, a backrest swing frame (2-2) connected to the lower end of the backrest bending plate (2-1) at its lower end, a base (2-3) hinged at one end to the upper end of the backrest swing frame (2-2), and a pitch driving device installed on the base (2-3) for driving the backrest bending plate (2-1) to pitch, characterized in that: The lower end of the backrest bending plate (2-1) is located between two ear plates (2-15) on the bottom surface of the backrest swing frame (2-2), and the backrest bending plate (2-1) and the backrest swing frame (2-2) are connected as a whole through an anti-collision motion connection component provided on the ear plate (2-15); the telescopic motor (2-9) in the pitch drive device is electrically connected to the anti-collision protection switch component installed on the backrest bending plate (2-1) and the backrest swing frame (2-2); when the backrest part (3) encounters an obstacle during the downward movement, the anti-collision motion connection component provides motion compensation while triggering the anti-collision protection switch component and controlling the telescopic motor (2-9) to stop; two ear plates (2-10) for being hinged to the telescopic end of the telescopic motor (2-9) are fixed in the middle of the backrest swing frame (2-2).

2. The dental chair with pitch safety protection and motion compensation function according to claim 1, characterized in that: The anti-collision motion connection assembly comprises a fixing screw (2-4) and a rotating shaft (2-5); the fixing screw (2-4) passes through a through hole on the ear plate (2-15) and is threadedly connected to a corresponding position of the backrest bent plate (2-1), so that the backrest bent plate (2-1) rotates around the axis of the fixing screw (2-4); the rotating shaft (2-5) passes through a large through hole on the ear plate (2-15) and a through hole on the backrest bent plate (2-1) and is connected to a cotter pin; and when the backrest portion (3) hits an obstacle, the backrest bent plate (2-1) is limited by the large through hole and rotates slightly around the axis of the fixing screw (2-4) to trigger the anti-collision protection switch assembly.

3. The dental chair with pitch safety protection and motion compensation function according to claim 2, characterized in that: The anti-collision protection switch assembly comprises a micro switch (2-6) and a protection plate (2-7), wherein the micro switch (2-6) is mounted on the upper end surface of the horizontal plate of the backrest swing frame (2-2), and the protection plate (2-7) in contact with the roller on the micro switch (2-6) is fixed on the backrest curved plate (2-1), and when the backrest portion (3) hits an obstacle, the backrest curved plate (2-1) drives the protection plate (2-7) to rotate slightly clockwise about the axis of the fixing screw (2-4) and then move away from the roller on the micro switch (2-6), thereby triggering the micro switch (2-6).

4. The dental chair with pitch safety protection and motion compensation function according to claim 3, characterized in that: The protective plate (2-7) is a Z-shaped plate, and two parallel waist-shaped holes (2-8) are formed on the lower end plate surface of the protective plate (2-7), and bolts passing through the waist-shaped holes (2-8) are adapted to be connected with the backrest curved plate (2-1), thereby realizing a positionally adjustable fixed connection of the protective plate (2-7) to the backrest curved plate (2-1), and the upper end plate of the protective plate (2-7) is in contact with a roller on the micro switch (2-6).

5. The dental chair with pitch safety protection and motion compensation function according to any one of claims 1 to 4, characterized in that: The pitch drive device includes a telescopic motor (2-9) and a connecting rod mechanism, wherein the telescopic motor (2-9) is installed at the middle of the right end of the base (2-3), and the telescopic end of the telescopic motor (2-9) is hinged to the middle of the lower end of the backrest swing frame (2-2), and connecting rod mechanisms are provided on both side walls of the front and rear roads of the middle seat frame (2-11), the left end of the connecting rod mechanism is fixedly connected to the backrest swing frame (2-2), and the right end of the connecting rod mechanism is hinged to the corresponding side of the base (2-3).

6. The dental chair with pitch safety protection and motion compensation function according to claim 5, characterized in that: The connecting rod mechanism comprises a driving rod (2-12), a linkage rod (2-13) and a connecting rod (2-14); the left end of the driving rod (2-12) is fixedly connected to the backrest swing frame (2-2), and the right end of the driving rod (2-12) is hinged to the left end of the linkage rod (2-13); the right end of the linkage rod (2-13) is hinged to the side wall corresponding to the middle seat frame (2-11); one end of the connecting rod (2-14) is hinged to the right end of the linkage rod (2-13), and the other end of the connecting rod (2-14) is hinged to the corresponding side of the base (2-3).

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