Door body locking structure of sterilizer

Abstract

The utility model discloses a door body locking structure of a sterilizer, and belongs to the technical field of door locks. Comprising a sterilizer body, wherein a sealing cover capable of being opened outwards is mounted at an opening of a sterilizing cavity of the sterilizer body; the door body is connected with the sealing cover, a locking structure composed of a gear and a door sliding rod is arranged in the door body, the gear is meshed with the tooth face of the door sliding rod, the door sliding rod is provided with a locking position and an unlocking position, and the gear rotates to drive the door sliding rod to move linearly so as to achieve switching between the locking position and the unlocking position. Compared with a single sliding rod structure, the matching structure of the gear and the door sliding rod has the advantages that the door sliding rod can be moved and the door body can be locked and solved only by driving the gear to rotate, and more importantly, due to the arrangement of the gear, even if the sterilization cavity is in a high-temperature and high-pressure state when the sterilizer body works, the door body can be locked and solved. And the unexpected reset phenomenon of the door sliding rod is not easy to occur, so that the safety of the whole door lock structure is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of door locks, and particularly relates to a door locking structure of a sterilizer. Background Art

[0002] As one of the indispensable important devices in the medical field, sterilizers are widely used in the disinfection and sterilization processes of medical devices, surgical supplies, and other items that require aseptic treatment. To ensure the sterilization effect and operation safety, sterilizers usually need to operate under high temperature and high pressure conditions. Among them, the design of the sealed door lock mechanism is crucial, which not only directly affects the effectiveness of the sterilization process but also relates to the personal safety of users.

[0003] The existing sealed door lock mechanisms for pressure vessels in sterilizers mostly adopt mechanical door lock structures. Such structures often use simple mechanical linkage devices (such as sliding rods) to achieve the locking and unlocking functions of the door body. However, in the actual application process, it is found that this traditional mechanical door lock has certain limitations. Especially when the inner cavity of the sterilizer is in a high temperature and high pressure state, due to the influence of the material's coefficient of thermal expansion and the stress relaxation phenomenon that may occur under long-term stress, the sliding rod structure sometimes undergoes unexpected automatic reset, that is, it unlocks itself without receiving an operation instruction, thus bringing potential safety hazards to the sterilization process. Summary of the Utility Model

[0004] The utility model aims at the above problems existing in the prior art and proposes a door locking structure of a sterilizer that is convenient to use and whose sliding rod is not prone to automatic reset.

[0005] The utility model can be realized by the following technical solutions:

[0006] A door locking structure of a sterilizer, comprising:

[0007] A sterilizer body, at the opening of its sterilization chamber, there is installed a sealing cover that can be opened outwards;

[0008] A door body, which is connected to the sealing cover. The door body has a locking structure composed of a gear and a door sliding rod, and the tooth surfaces of the gear and the door sliding rod are meshed with each other. Among them,

[0009] The door sliding rod has a locking position and an unlocking position. When the door sliding rod is in the locking position, the door body is in a locked state. When the door sliding rod is in the unlocking position, the door body is in an unlocked state. By rotating the gear, the door sliding rod is driven to move linearly to realize the switching between its locking position and unlocking position.

[0010] As a further improvement of the utility model, the sterilizer body is provided with a door body fixing bracket, and one side of the door body is connected to the door body fixing bracket.

[0011] As a further improvement of the present utility model, the door body fixing bracket includes a fixed seat and a rotating seat. The fixed seat is fixedly installed on the sterilizer body, the rotating seat is hinged to the fixed seat, and the door body is connected to the rotating seat.

[0012] As a further improvement of the present utility model, the sterilizer body is further provided with a door lock block which has a through hole for the door slide rod to be inserted into.

[0013] As a further improvement of the present utility model, the door lock block and the door body fixing bracket are respectively located on the corresponding two sides of the door body and are on the same straight line.

[0014] As a further improvement of the present utility model, the sterilizer body is further provided with a door lock travel switch which has a limit shaft inserted into the through hole. The limit shaft and the door slide rod are respectively inserted into the through hole from both ends of the through hole. When the door slide rod moves to the locking position, the door slide rod abuts against the limit shaft.

[0015] As a further improvement of the present utility model, a stop pin channel communicating with the channel where the door slide rod is located is further provided inside the door body. A stop pin and an elastic member are installed in the stop pin channel, and the elastic member always provides a force for the stop pin to face the direction where the door slide rod is located.

[0016] As a further improvement of the present utility model, an arc-shaped groove is provided on the side of the door slide rod. When the door slide rod moves to the locking position, the stop pin is automatically inserted into the arc-shaped groove under the push of the elastic member. When the door slide rod moves away from the locking position, the stop pin is automatically pushed outwards.

[0017] As a further improvement of the present utility model, it further includes a handle which is connected to the gear through a handle shaft. By rotating the handle, the gear is driven to rotate to realize the linear movement of the door slide rod.

[0018] Compared with the prior art, the present utility model has the following beneficial effects:

[0019] 1. Compared with a single slide rod structure, the matching structure of the gear and the door slide rod has the following advantages: on the one hand, the movement of the door slide rod can be realized as long as the gear is driven to rotate, and then the locking and unlocking of the door body can be realized, which is more convenient to use. More importantly, due to the setting of the gear, even when the sterilizer body is working and the sterilization chamber is in a high-temperature and high-pressure state, the door slide rod is not likely to have an unexpected reset phenomenon, enhancing the safety of the entire door lock structure;

[0020] 2. The sterilizer body is also provided with a door lock travel switch. The door lock travel switch has a limit shaft inserted into the through hole. The limit shaft and the door slide rod are inserted into the through hole from both ends respectively. When the door slide rod moves to the locked position, the door slide rod abuts against the limit shaft, thereby limiting the travel of the door slide rod and further improving the reliability of the locking structure.

[0021] 3. When the door slide rod moves to the locked position, the stop pin will automatically insert into the arc-shaped groove of the door slide rod, and the stop pin is perpendicular to the door slide rod. Thus, it plays a role in limiting the axial movement of the door slide rod, forming a double lock, ensuring that the door body will not be accidentally opened due to the reset of the slide rod under high temperature and high pressure environment, and improving the safety of the entire system. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the sterilizer body of the present invention after being connected to the door body;

[0023] Figure 2 is of the present invention Figure 1 a cross-sectional view of the position where the door body is located;

[0024] Figure 3 is a schematic structural diagram of the sterilizer body of the present invention.

[0025] In the figure, 100, sterilizer body; 110, sealing cover; 120, door body fixing bracket; 121, fixed seat; 122, rotating seat; 130, door lock block; 140, door lock travel switch; 141, limit shaft; 150, stop pin channel; 151, stop pin.

[0026] 200, door body; 210, gear; 220, door slide rod; 221, arc-shaped groove; 230, handle. Detailed Embodiment

[0027] The following are specific embodiments of the present invention and in combination with the drawings, the technical methods of the present invention will be further described, but the present invention is not limited to these embodiments.

[0028] As Figures 1-3 shown, the present invention provides a door body locking structure for a sterilizer, including:

[0029] A sterilizer body 100, at the opening of its sterilization chamber, a sealing cover 110 that can be opened outwards is installed;

[0030] A door body 200, which is connected to the sealing cover 110. The door body 200 has a locking structure composed of a gear 210 and a door slide rod 220. The tooth surfaces of the gear 210 and the door slide rod 220 are meshed. Among them,

[0031] The door slide bar 220 has a locked position and an unlocked position. When the door slide bar 220 is in the locked position, the door body 200 is in the locked state. When the door slide bar 220 is in the unlocked position, the door body 200 is in the unlocked state. By the rotation of the gear 210, the door slide bar 220 is driven to move linearly to realize the switching between its locked position and unlocked position.

[0032] Specifically, by opening or closing the door body 200, the sealing cover 110 at the opening of the sterilization chamber is driven to open or close. Compared with a single slide bar structure, the matching structure of the gear 210 and the door slide bar 220 has the following advantages. On the one hand, as long as the gear 210 is driven to rotate, the movement of the door slide bar 220 can be realized, and then the locking and unlocking of the door body 200 can be realized, which is more convenient to use. More importantly, due to the setting of the gear 210, even when the sterilizer body 100 is working and the inside of its sterilization chamber is in a high-temperature and high-pressure state, the door slide bar 220 is not likely to have an unexpected reset phenomenon, enhancing the safety of the entire door lock structure.

[0033] Preferably, the sterilizer body 100 is provided with a door body fixing bracket 120. One side of the door body 200 is connected to the door body fixing bracket 120. Among them, the door body fixing bracket 120 includes a fixed seat 121 and a rotating seat 122. The fixed seat 121 is fixedly installed on the sterilizer body 100, the rotating seat 122 is hinged to the fixed seat 121, and the door body 200 is connected to the rotating seat 122. Thus, after the door body 200 is unlocked, it can rotate around the hinge point of the rotating seat 122 to achieve the purpose of opening or closing the sealing cover 110 of the sterilization chamber.

[0034] Preferably, the sterilizer body 100 is further provided with a door lock block 130. The door lock block 130 has a through hole for the door slide bar 220 to insert. Since the door lock block 130 and the door body fixing bracket 120 are respectively located on the corresponding two sides of the door body 200 and are on the same straight line, when the door slide bar 220 is inserted into the through hole, the door lock block 130 forms a limit on the door slide bar 220, and the door body 200 is in the locked state. On the contrary, when the door slide bar 220 disengages from the through hole outward, the door lock is in the unlocked state.

[0035] Preferably, the sterilizer body 100 is further provided with a door lock travel switch 140. The door lock travel switch 140 has a limit shaft 141 inserted into the through hole. The limit shaft 141 and the door slide bar 220 are inserted into the through hole from both ends respectively. When the door slide bar 220 moves to the locked position, the door slide bar 220 abuts against the limit shaft 141, thereby limiting the travel of the door slide bar 220. As long as the door slide bar 220 moves to abut against the limit shaft 141, it means that the door slide bar 220 has moved to the locked position, further improving the reliability of the locking structure.

[0036] Preferably, the door body 200 further has a stop pin channel 150 communicating with the channel where the door slide bar 220 is located. A stop pin 151 and an elastic member (not shown in the figure) are installed in the stop pin channel 150, and the elastic member always provides a force for the stop pin 151 towards the direction where the door slide bar 220 is located.

[0037] Further, an arc-shaped groove 221 is provided on the side of the door slide bar 220. When the door slide bar 220 moves to the locked position, the stop pin 151 is automatically inserted into the arc-shaped groove 221 under the push of the elastic member. When the door slide bar 220 moves away from the locked position, the stop pin 151 is automatically pushed outwards.

[0038] That is to say, when the door slide bar 220 moves to the locked position, the stop pin 151 will automatically be inserted into the arc-shaped groove 221 of the door slide bar 220, and the stop pin 151 is perpendicular to the door slide bar 220, thereby playing a role in limiting the axial movement of the door slide bar 220 and forming a double lock, ensuring that the door body 200 will not be accidentally opened due to the reset of the slide bar in a high-temperature and high-pressure environment, and improving the safety of the entire system.

[0039] Preferably, it further includes a handle 230, which is connected to the gear 210 through a handle 230 shaft. By rotating the handle 230, the gear 210 is driven to rotate to achieve the linear movement of the door slide bar 220, improving the convenience during operation.

[0040] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed above, but also include technical solutions composed of any combination of the above technical features. The above are the specific embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

[0041] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0043] In the present utility model, unless otherwise clearly specified or limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

Claims

1. A door locking structure of a sterilizer, characterized in that, Comprising: A sterilizer body, at the opening of its sterilization chamber is installed a sealing cover that can be opened outward; A door body, which is connected to the sealing cover, and inside the door body there is a locking structure composed of a gear and a door slide rod, the gear meshes with the tooth surface of the door slide rod, wherein, The door slide rod has a locking position and an unlocking position. When the door slide rod is in the locking position, the door body is in the locked state. When the door slide rod is in the unlocking position, the door body is in the unlocked state. By the rotation of the gear, the door slide rod is driven to move linearly to realize the switching between its locking position and unlocking position.

2. The door locking structure of a sterilizer according to claim 1, characterized in that The sterilizer body is provided with a door body fixing bracket, and one side of the door body is connected to the door body fixing bracket.

3. The door locking structure of a sterilizer according to claim 2, wherein, The door body fixing bracket includes a fixed seat and a rotating seat. The fixed seat is fixedly installed on the sterilizer body, the rotating seat is hinged to the fixed seat, and the door body is connected to the rotating seat.

4. The door locking structure of a sterilizer according to claim 2, characterized in that, The sterilizer body is also provided with a door lock block, and the door lock block has a through hole for the door slide rod to insert into.

5. The door locking structure of a sterilizer according to claim 4, characterized in that, The door lock block and the door body fixing bracket are respectively located on the corresponding two sides of the door body and are on the same straight line.

6. The door locking structure of a sterilizer according to claim 4, characterized in that, The sterilizer body is also provided with a door lock travel switch, and the door lock travel switch has a limit shaft inserted into the through hole. The limit shaft and the door slide rod are respectively inserted from both ends of the through hole. When the door slide rod moves to the locking position, the door slide rod abuts against the limit shaft.

7. The door locking structure of a sterilizer according to claim 1, characterized in that, Inside the door body there is also a stop pin channel communicating with the channel where the door slide rod is located. A stop pin and an elastic member are installed in the stop pin channel, and the elastic member always provides a force for the stop pin towards the direction where the door slide rod is located.

8. The door locking structure of a sterilizer according to claim 7, characterized in that, An arc-shaped groove is provided on the side of the door slide rod. When the door slide rod moves to the locking position, the stop pin is automatically inserted into the arc-shaped groove under the push of the elastic member. When the door slide rod disengages from the locking position, the stop pin is automatically pushed outwards.

9. The door locking structure of a sterilizer according to claim 1, wherein, It also includes a handle, which is connected to the gear through a handle shaft. By rotating the handle, the gear is driven to rotate to realize the linear movement of the door slide rod.

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