A normally open device and a normally open device for a dental three-way syringe

Abstract

The present invention discloses a normally open device and a normally open device for a dental triple syringe. A notch is recessed upward on the bottom plane of the normally open device. The notch is used to press on a component to be pressed when the normally open device is used on the component to be pressed, and the inner top plane of the notch is a pressure surface. The normally open device is further provided with a limiting mechanism, which is used to limit the normally open device on the component to be pressed when the normally open device is used on the component to be pressed. By installing the normally open device of the present invention on the dental triple syringe, it is not necessary for the operator to hold down the water spraying button, which can ensure that the water path of the triple syringe is in a normally open state, effectively reducing the working intensity of the operator and alleviating the fatigue of the operator.

Description

〖Technical Field〗

[0001] The present invention relates to the technical field of dental appliances, and particularly to a normally open device and a normally open device for a dental triple syringe. 〖Background Art〗

[0002] With the rapid development of the oral medicine industry in China, people are paying more and more attention to the importance of nosocomial infection control in the process of oral diagnosis and treatment. China has implemented the one-person-one-use-one-sterilization system for dental handpieces, which has greatly reduced the risk of cross-infection in oral diagnosis and treatment. However, the problem of cross-infection in oral diagnosis and treatment has not been completely solved. Among them, the microbial contamination of the waterway of dental treatment instruments is the main risk factor. There is microbial contamination in the waterway of the dental treatment unit, and the microorganisms exist in the form of biofilms in the waterway. The sources of microorganisms include the water supply source itself, as well as the contamination caused by the backflow of microorganisms into the waterway due to the back suction of dental equipment and the release of microorganisms from the biofilm on the inner wall of the water supply pipe. A large number of studies have shown that the microorganisms in the biofilm are prone to exchange genetic material and obtain nutrients from water for growth and reproduction. Regular disinfection of the waterway of the dental treatment unit can reduce the microbial concentration.

[0003] Among them, the dental triple syringe is a common device on the dental comprehensive treatment unit. The dental triple syringe is generally provided with a pipe for spraying water and air and two buttons. One is a water spraying button for controlling the pipe to spray water; the other is an air jetting button for controlling the pipe to jet air. When the two buttons are pressed simultaneously, water mist spraying can be carried out. Disinfection of the waterway of the dental treatment unit includes disinfection and flushing of the waterway of the dental triple syringe. In order to ensure the smooth outflow of the disinfectant and the distilled water for flushing, the operator needs to long-press the water spraying button of the dental triple syringe, which is likely to cause finger fatigue of the operator. 〖Summary of the Invention〗

[0004] The first object of the present invention is to provide a normally open device. By installing this normally open device on the dental triple syringe, it is not necessary for the operator to press the water spraying button, and the waterway of the triple syringe can be kept in a normally open state, effectively reducing the working intensity of the operator and alleviating the fatigue of the operator.

[0005] In order to achieve the first object of the present invention, the following technical solution is adopted:

[0006] A normally open device, the bottom plane of the normally open device is concavely provided with a notch upward, the notch is used for pressing on a to-be-pressed component when the normally open device is used on the to-be-pressed component, and the inner top plane of the notch is a pressure surface; the normally open device is further provided with a limiting mechanism, and the limiting mechanism is used for limiting the normally open device on the to-be-pressed component when the normally open device is used on the to-be-pressed component.

[0007] Further, the component to be pressed includes a portion to be pressed and a limiting portion. The notch is used to press the pressure surface against the portion to be pressed when the normally open actuator is used on the component to be pressed, and the limiting mechanism is used to cooperate with the limiting portion for limiting when the normally open actuator is used on the component to be pressed.

[0008] Further, an assembly opening is longitudinally formed inside the normally open actuator, and at least one limiting boss extends from the inner side wall of the assembly opening towards the inside of the assembly opening; the limiting portion of the component to be pressed cooperates with the limiting boss for limiting.

[0009] Further, when the normally open actuator is used on the component to be pressed, it can move between a standby position and a use position; when the normally open actuator is in the standby position, the limiting portion passes through one end of the assembly opening away from the limiting boss, and the pressure surface of the notch is pressed against the portion to be pressed; when the normally open actuator moves from the standby position to the use position, the limiting boss moves towards the limiting portion until the limiting boss contacts and limits the limiting portion, and the pressure surface of the notch is always pressed against the portion to be pressed.

[0010] As a specific implementation manner, the length of the notch is greater than the distance that the normally open actuator moves from the standby position to the use position.

[0011] As a specific implementation manner, the inner wall surface of one end of the assembly opening away from the notch is a curved surface with a semi-circular cross-section; the inner wall surface of one end of the assembly opening close to the notch is a curved surface with a semi-circular cross-section and is disposed opposite to the inner wall surface of one end of the assembly opening away from the notch.

[0012] As a specific implementation manner, the cross-section of the limiting boss is substantially semi-circular.

[0013] The second object of the present invention aims to provide a normally open actuator for a dental triple syringe. By using this normally open actuator, it is not necessary for an operator to hold down the water spray button, which can ensure that the water path of the triple syringe is in a normally open state, effectively reducing the working intensity of the operator and relieving the fatigue of the operator.

[0014] In order to achieve the second object of the present invention, the present invention adopts the following technical solutions:

[0015] A normally open actuator for a dental triple syringe, which is applied to a dental triple syringe. The dental triple syringe includes a water spray button, and is characterized in that: the normally open actuator for the dental triple syringe adopts the normally open actuator according to any one of claims 1-7; the component to be pressed is the dental triple syringe; the portion to be pressed is the water spray button.

[0016] Further, the dental triple syringe further includes an air jet button, and the air jet button is the limiting portion.

[0017] Further, the dental triple-purpose syringe further includes a nozzle head, a hand-held end and a nozzle connected to the nozzle head. An air jet button and a water spray button are provided on the outer shell of the nozzle head, and an air outlet pipeline and a water outlet pipeline are provided inside it.

[0018] Advantages of the present invention:

[0019] By installing a normally open device on the dental triple-purpose syringe, the operator does not need to hold down the water spray button, which can ensure that the water circuit of the triple-purpose syringe is in a normally open state, effectively reducing the working intensity of the operator and relieving the fatigue of the operator. 〖BRIEF DESCRIPTION OF THE DRAWINGS〗

[0020] In order to more clearly illustrate the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. The drawings in the following description are only the embodiments in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a reference diagram of the first use state of the normally open device of the dental triple-purpose syringe provided by the embodiment of the present invention;

[0022] Figure 2 is a reference diagram of the second use state of the normally open device of the dental triple-purpose syringe provided by the embodiment of the present invention;

[0023] Figure 3 is a reference diagram of the third use state of the normally open device of the dental triple-purpose syringe provided by the embodiment of the present invention;

[0024] Explanation of reference numerals: 100 - normally open device of dental triple-purpose syringe, 110 - notch, 120 - assembly port, 121 - limiting boss, 200 - dental triple-purpose syringe, 210 - nozzle head, 211 - air jet button, 212 - water spray button, 220 - hand-held end, 230 - nozzle. 〖DETAILED DESCRIPTION OF THE INVENTION〗

[0025] The present invention will be described in detail below with reference to the drawings.

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] As Figures 1 to 3 shown, a dental triple-purpose gun constant open device 100 is applied to a dental triple-purpose gun 200. The dental triple-purpose gun 200 includes a gun head 210, a hand-held end 220 and a nozzle 230 connected to the gun head 210. The gun head 210 is the functional part of the triple-purpose spray gun. A jet button 211 and a water spray button 212 are provided on its outer shell, and an air outlet pipeline (not shown) and a water outlet pipeline (not shown) are provided inside it. When the triple-purpose gun constant open device 100 is used on the dental triple-purpose gun 200, the water spray button 212 is in a pressed state, realizing the constant opening of the water spraying function of the dental triple-purpose gun 200, without the operator holding the water spraying button, effectively reducing the working intensity of the operator and relieving the fatigue of the operator.

[0030] In this embodiment, a notch 110 is concavely provided upward on the bottom plane of the dental triple-purpose gun constant open device 100. The notch 110 is used for pressing the water spray button 212 when the triple-purpose gun constant open device 100 is used on the dental triple-purpose gun 200. The inner top plane of the notch 110 is the pressure surface. The dental triple-purpose gun constant open device 100 is also provided with a limiting mechanism, and the limiting mechanism is used to limit the triple-purpose gun constant open device 100 to the dental triple-purpose gun 200 when the triple-purpose gun constant open device 100 is used on the dental triple-purpose gun 200.

[0031] As a specific embodiment, the external contour of the dental triple-purpose gun opener 100 is generally in a strip shape with both ends being arc-shaped, and an assembly opening 120 for assembling on the air jet button 211 is longitudinally provided inside; the dimension of the assembly opening 120 in the width direction is larger than the diameter of the air jet button 211, and when the dental triple-purpose gun opener 100 is used on the dental triple-purpose gun 200, it is for the air jet button 211 to pass through and can relatively move inside the assembly opening 120 along the length direction of the assembly opening 120; an inner wall surface at one end of the assembly opening 120 far from the notch 110 extends towards the inside of the assembly opening 120 to form a limiting boss 121 (i.e., a limiting mechanism), and the dental triple-purpose gun opener 100 is mainly limited to the dental triple-purpose gun 200 by the cooperation and limitation of the limiting boss 121 and the air jet button 211.

[0032] As a specific embodiment, the inner wall surface at one end of the assembly opening 120 far from the notch 110 is a curved surface with a semi-circular cross-section.

[0033] As Figures 1 to 3 shown, when assembling the dental triple-purpose gun opener 100 on the dental triple-purpose gun 200, first pass one end of the assembly opening 120 close to the notch 110 through the air jet button 211, and the inner top plane of the notch 110 is pressed on the water spray button 212 (as Figure 1 , shown in Figure 2); then, move the dental triple-purpose gun opener 100 towards the direction close to the water spray button 212 until the limiting boss 121 moves to cooperate and limit with the air jet button 211, and limit the dental triple-purpose gun opener 100 to the dental triple-purpose gun 200 (as Figure 3 shown).

[0034] In this embodiment, when the dental triple-purpose gun opener 100 is used on the dental triple-purpose gun 200, it can move between a standby position ( Figure 2 ) and a use position ( Figure 3 ); when the dental triple-purpose gun opener 100 is in the standby position, the air jet button 211 passes through one end of the assembly opening 120 far from the limiting boss 121, and the pressure surface of the notch 110 is pressed on the water spray button 212; when the dental triple-purpose gun opener 100 moves from the standby position to the use position, the limiting boss 121 moves towards the direction close to the air jet button 211 until the limiting boss 121 contacts and limits with the air jet button 211, and the pressure surface of the notch 110 is always pressed on the water spray button 212.

[0035] As a specific embodiment, the length of the notch 110 is greater than the distance that the dental triple-purpose gun opener 100 moves from the standby position to the use position, ensuring that the pressure surface of the notch 110 is always pressed on the water spray button 212 during the process of the dental triple-purpose gun opener 100 moving from the standby position to the use position.

[0036] As a specific embodiment, the inner wall surface of one end of the assembly port 120 away from the notch 110 is a curved surface with a semi-circular cross-section; the inner wall surface of one end of the assembly port 120 close to the notch 110 is a curved surface with a semi-circular cross-section, and is disposed opposite to the inner wall surface of one end of the assembly port 120 away from the notch 110.

[0037] As Figure 3 As shown, when the three-purpose gun normally-open device 100 provided in this embodiment is used on the dental three-purpose gun 200, the limit boss 121 cooperates with the air-jet button 211 for limiting, and the three-purpose gun normally-open device 100 is fixed on the dental three-purpose gun 200. The inner top plane of the notch 110 is used as a pressure surface and is always pressed on the water-spray button 212, so that the water-spray button 212 is always in a pressed state, realizing that the water-spray function of the dental three-purpose gun 200 is normally open, without the operator having to hold down the water-spray button, effectively reducing the working intensity of the operator and alleviating the fatigue of the operator. When the operator completes the waterway disinfection of the dental treatment table and no longer needs to keep the water-spray button 212 in the water-spray state, only need to move the dental three-purpose gun normally-open device 100 in a direction away from the water-spray button 212, the air-jet button 211 is disengaged from the limit of the limit boss 121, and then the three-purpose gun normally-open device 100 can be taken out from the dental three-purpose gun 200, and the operation is simple.

[0038] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A normally open device, characterized in that: a notch is concavely provided on the bottom plane of the normally open device, and the notch is used to press on a component to be pressed when the normally open device is used on the component to be pressed, and the inner top plane of the notch is a pressure surface; a limiting mechanism is further provided on the normally open device, and the limiting mechanism is used to limit the normally open device on the component to be pressed when the normally open device is used on the component to be pressed; the component to be pressed includes a part to be pressed and a limiting part; an assembly opening for assembling on the limiting part is longitudinally provided inside the normally open device, the assembly opening allows the limiting part to pass through and can move relatively inside the assembly opening along the length direction of the assembly opening, and a limiting boss extends towards the inside of the assembly opening from the inner wall surface at one end of the assembly opening far away from the notch, and the normally open device is limited by the cooperation of the limiting boss and the limiting part; when the normally open device is used on the component to be pressed, it can move between a standby position and a use position; when the normally open device is in the standby position, the limiting part passes through one end of the assembly opening far away from the limiting boss, and the pressure surface of the notch presses on the part to be pressed; when the normally open device moves from the standby position to the use position, the limiting boss moves towards the direction close to the limiting part until the limiting boss contacts and limits the limiting part, and the pressure surface of the notch always presses on the part to be pressed.

2. The normally open device according to claim 1, characterized in that: the length of the notch is greater than the distance that the normally open device moves from the standby position to the use position.

3. The normally open device according to any one of claims 1 to 2, characterized in that: the inner wall surface at one end of the assembly opening far away from the notch is a curved surface with a semicircular cross-section; the inner wall surface at one end of the assembly opening close to the notch is a curved surface with a semicircular cross-section and is arranged opposite to the inner wall surface at one end of the assembly opening far away from the notch.

4. The normally open device according to claim 3, characterized in that: the cross-section of the limiting boss is generally semicircular.

5. A normally open device for a dental triple-purpose syringe, which is applied to a dental triple-purpose syringe, and the dental triple-purpose syringe includes a water spray button, characterized in that: the normally open device for the dental triple-purpose syringe adopts the normally open device according to any one of claims 1-4; the component to be pressed is the dental triple-purpose syringe; the part to be pressed is the water spray button.

6. The normally open device for the dental triple-purpose syringe according to claim 5, characterized in that: the dental triple-purpose syringe further includes an air jet button, and the air jet button is the limiting part.

7. The normally open device for the dental triple-purpose syringe according to claim 5 or 6, characterized in that: it further includes a gun head, a hand-held end and a nozzle connected to the gun head, the gun head shell is provided with an air jet button and a water spray button, and an air outlet pipeline and a water outlet pipeline are arranged inside it.

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