Hand placing rack for biological safety cabinet

Abstract

The utility model discloses a biosafety cabinet's hand rest, including safety cabinet body, arc bracket and adjusting rod, safety cabinet body both sides are provided with sliding chute, the inside of sliding chute is fixedly connected with slide bar, the both sides of middle part of slide bar both are in sliding fit with moving block, and the moving block is fixed in the sliding chute. A moving plate is fixedly connected to the top end of the moving block, supporting springs are fixedly connected to the two ends of the interior of the moving plate, a sliding block is fixedly connected to one end of each supporting spring, a rotating shaft is fixedly connected to the top end of each sliding block, a rotating rod is rotationally connected to one side of each rotating shaft, and a rotating rod is rotationally connected to one end of each rotating rod; and the two ends of the rotating rod are fixedly connected with arc-shaped brackets. Air in the cabinet is sucked outwards through the vacuum pipe, the air in the cabinet needs to be filtered through the external HEPA filter and then discharged into the atmosphere, medical staff can place hands above the arc-shaped bracket, then the arc-shaped bracket is stressed and pressed downwards under the action of gravity, and the buffering effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of biosafety cabinet hand rack technology, specifically a hand rack for biosafety cabinets. Background Technology

[0002] A biosafety cabinet is a box-shaped, negative-pressure air-purifying safety device that prevents the aerosol release of hazardous or unknown biological particles during experimental procedures. It is widely used in research, teaching, clinical testing, and production in fields such as microbiology, biomedicine, genetic engineering, and biopharmaceuticals, and is the most basic safety protection equipment in the primary biosafety barrier of laboratories.

[0003] Existing biosafety cabinets are equipped with handrests on the inside. However, traditional handrests have a limited function, being fixed in a designated position. Furthermore, their surface is made of hard material, which lacks comfort when placing hands on them. In today's rapidly developing world, this makes them inconvenient for comfortable use. Moreover, for use in designated positions, only by adjusting the appropriate handrest spacing can the air purification effect be fully and thoroughly achieved for different medical staff. Utility Model Content

[0004] The purpose of this invention is to provide a handrest for a biosafety cabinet. The cavity inside the cabinet is continuously under negative pressure, allowing medical personnel to place their hands on the arc-shaped bracket. Gravity then forces the arc-shaped bracket downwards, while the rotating rod and the rotating lever work together to support the rotation of the slider. The elastic return of the support spring acts as a buffer.

[0005] To achieve the above objectives, a handrest for a biosafety cabinet is provided, comprising: a biosafety cabinet body, an arc-shaped bracket, and an adjusting rod. The biosafety cabinet body has sliding grooves on both sides of its interior. A sliding rod is fixedly connected inside each groove. Moving blocks are slidably fitted on both sides of the middle portion of each sliding rod. A moving plate is fixedly connected to the top of each moving block. Supporting springs are fixedly connected to both ends of each moving plate. A slider is fixedly connected to one end of each supporting spring. A rotating shaft is fixedly connected to the top of each slider. A rotating rod is rotatably connected to one side of the rotating shaft. A rotating rod is rotatably connected to one end of each rotating rod. Arc-shaped brackets are fixedly connected to both ends of each rotating rod. A groove is formed in the middle of the bottom end of the arc-shaped bracket, and the rotating rod engages with the groove. Several through holes are formed inside the arc-shaped bracket.

[0006] According to the aforementioned handrail for a biosafety cabinet, an arc-shaped locking block is inserted inside the movable block, and an adjusting rod is fixedly connected to one end of the arc-shaped locking block, which allows for convenient and free adjustment of the required spacing.

[0007] According to the aforementioned handrest for a biosafety cabinet, a second spring is sleeved on the outside of the adjusting rod, and one end of the second spring abuts against the inner wall of the biosafety cabinet. The second spring provides elastic support to reset the arc-shaped locking block.

[0008] According to the aforementioned handrest for a biosafety cabinet, the slide bar has an arc-shaped groove inside, which, through the engagement of the arc-shaped groove and the arc-shaped locking block, increases the limiting effect.

[0009] According to the aforementioned handrest for a biosafety cabinet, a support frame is fixedly connected to the bottom of the cabinet body, and a vacuum tube is fixedly connected to one side of the top of the cabinet body, which facilitates the exhaust of gas.

[0010] According to the aforementioned handrail for a biosafety cabinet, a control panel is fixedly connected to the center of the front side of the cabinet, and the control panel enables the control described in the prior art.

[0011] According to the aforementioned handrest for a biosafety cabinet, an opening is provided at the bottom front side of the cabinet body, and an adjustment rod passes through the opening, allowing the adjustment rod to pass through for convenient adjustment.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model discloses a handrest for a biosafety cabinet, which is equipped with an arc-shaped bracket, a rotating rod, a rotating arm, and a supporting spring. Air inside the cabinet is drawn outwards through a vacuum tube to maintain a negative pressure state. The air inside the cabinet is also filtered through an external HEPA filter before being released into the atmosphere to protect the environment. This ensures that the cavity inside the biosafety cabinet remains under negative pressure. Medical personnel can place their hands on the arc-shaped bracket, which is then pressed downwards by gravity. The rotating rod and rotating arm work together to expand and support the sliding block, while the elastic return of the supporting spring acts as a buffer, increasing the comfort of using the arc-shaped handrest.

[0014] 2. This utility model provides a handrest for a biosafety cabinet, which includes an adjusting rod, an arc-shaped locking block, an arc-shaped groove, and a second spring. When the adjusting rod is pulled outward, the arc-shaped locking block disengages from the arc-shaped groove, allowing the entire movable plate to be moved. Once the desired position is reached, the adjusting rod is released, and the second spring provides elastic support, engaging the arc-shaped locking block and the arc-shaped groove to achieve a limiting effect. This structure allows for convenient adjustment of the spacing between the arc-shaped brackets as needed.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a three-dimensional structural diagram of a handrail for a biosafety cabinet according to the present invention;

[0018] Figure 2 This is a schematic diagram illustrating the sliding rod and movable plate structure of a handrail for a biosafety cabinet according to this utility model.

[0019] Figure 3 This is a bottom side view of the arc-shaped bracket of a handrest for a biosafety cabinet according to the present invention;

[0020] Figure 4 This is an enlarged view of the arc-shaped locking block structure of a handrail for a biosafety cabinet according to the present invention.

[0021] In the diagram: 1. Safety cabinet; 2. Support frame; 3. Adjusting rod; 4. Arc-shaped bracket; 5. Control panel; 6. Vacuum tube; 7. Arc-shaped groove; 8. Rotating rod; 9. Slide rod; 10. Support spring; 11. Slider; 12. Moving plate; 13. Rotating rod; 14. Through hole; 15. Opening; 16. Second spring; 17. Arc-shaped locking block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4This utility model provides a technical solution: a handrest for a biosafety cabinet, comprising: a biosafety cabinet body 1, an arc-shaped bracket 4, and an adjusting rod 3. Slide grooves are provided on both sides of the interior of the biosafety cabinet body 1. A slide rod 9 is fixedly connected inside the slide groove. Moving blocks are slidably fitted on both sides of the middle portion of the slide rod 9. A moving plate 12 is fixedly connected to the top of each moving block. Support springs 10 are fixedly connected to both ends of the interior of the moving plate 12. A rotating rod 13 and a rotating rod 8 rotate to support the rotational expansion of the slider 11, while the elastic recoil of the support springs 10 supports its movement. For buffering, a slider 11 is fixedly connected to one end of the supporting spring 10, a rotating shaft is fixedly connected to the top of the slider 11, a rotating rod 8 is rotatably connected to one side of the rotating shaft, a rotating rod 13 is rotatably connected to one end of the rotating rod 8, and an arc-shaped bracket 4 is fixedly connected to both ends of the rotating rod 13. When a hand is placed above the arc-shaped bracket 4, the arc-shaped bracket 4 is pressed down by gravity. A groove is provided in the middle of the bottom end of the arc-shaped bracket 4, and the rotating rod 8 cooperates with the groove. Several through holes 14 are provided inside the arc-shaped bracket 4, and an arc-shaped groove 7 is provided inside the sliding rod 9.

[0024] An arc-shaped locking block 17 is inserted inside the movable block. One end of the arc-shaped locking block 17 is fixedly connected to an adjusting rod 3. When the position of the arc-shaped bracket 4 needs to be adjusted, the adjusting rod 3 is pulled outwards, causing the arc-shaped locking block 17 to move outwards within the movable block, disengaging it from the arc-shaped groove 7. A second spring 16 is sleeved on the outside of the adjusting rod 3. The second spring 16 provides elastic support, engaging the arc-shaped locking block 17 and the arc-shaped groove 7 to achieve a limiting effect. This allows for convenient adjustment of the spacing between the arc-shaped brackets 4 as needed. The second spring 16 provides elastic back pressure, enabling the overall movement of the movable plate 12. During the movement, the second spring... Spring 16 abuts against the inner wall of the safety cabinet 1, enabling movement. One end of the second spring 16 abuts against the inner wall of the safety cabinet 1. A support frame 2 is fixedly connected to the bottom of the safety cabinet 1. A vacuum tube 6 is fixedly connected to one side of the top of the safety cabinet 1. The air inside the cabinet is drawn out through the vacuum tube 6 to maintain a negative pressure state inside the cabinet. The air inside the cabinet also needs to be filtered by an external HEPA filter before being discharged into the atmosphere to protect the environment. A control panel 5 is fixedly connected to the middle of the front side of the safety cabinet 1. An opening 15 is opened at the bottom of the front side of the safety cabinet 1, and the adjusting rod 3 passes through the opening 15.

[0025] Working principle: During use, the vacuum equipment draws air out of the cabinet through the vacuum tube 6, maintaining a negative pressure state inside the cabinet. The air inside the cabinet also needs to be filtered through an external HEPA filter before being discharged into the atmosphere to protect the environment. Medical staff can place their hands on the curved support 4. Then, under the action of gravity, the curved support 4 is pressed downwards. The rotating rod 13 and the rotating rod 8 rotate in coordination, which can support the rotation of the slider 11. The elastic return pressure of the support spring 10 acts as a buffer, increasing the comfort of using the curved support 4 during use. Subsequently, when the position of the arc-shaped bracket 4 needs to be adjusted, the adjusting rod 3 is pulled outward, and the arc-shaped locking block 17 moves outward within the moving block, disengaging it from the arc-shaped groove 7. Then, the second spring 16 elastically returns, enabling the overall movement of the moving plate 12. During the movement, the second spring 16 abuts against the inner wall of the safety cabinet 1, cooperating with the movement. After reaching the desired position, the adjusting rod 3 is released, and the second spring 16 elastically supports and engages the arc-shaped locking block 17 with the arc-shaped groove 7, achieving a limiting effect. This allows for convenient adjustment of the spacing between the arc-shaped brackets 4 as needed.

[0026] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A shelf for a biological safety cabinet, comprising: Safe cabinet body (1), arc bracket (4) and adjusting rod (3), characterized by, the inside of the safe cabinet body (1) is provided with a sliding groove on both sides, the inside of the sliding groove is fixedly connected with a sliding rod (9), the middle of the sliding rod (9) is slidably connected with a moving block on both sides, the top of the moving block is fixedly connected with a moving plate (12), the inside of the moving plate (12) is fixedly connected with a supporting spring (10) at both ends, one end of the supporting spring (10) is fixedly connected with a sliding block (11), the top of the sliding block (11) is fixedly connected with a rotating shaft, one side of the rotating shaft is rotatably connected with a rotating rod (8), one end of the rotating rod (8) is rotatably connected with a rotating rod (13), both ends of the rotating rod (13) are fixedly connected with an arc bracket (4), the bottom of the arc bracket (4) is provided with a groove in the middle, and the rotating rod (8) is matched with the groove, the inside of the arc bracket (4) is provided with a plurality of through holes (14).

2. A shelf for a biological safety cabinet as defined in claim 1, wherein: The inside of the moving block is inserted with an arc-shaped clamping block (17), one end of the arc-shaped clamping block (17) is fixedly connected with an adjusting rod (3).

3. A shelf for a biological safety cabinet as defined in claim 2, wherein: The outside of the adjusting rod (3) is sleeved with a second spring (16), and one end of the second spring (16) is in abutting contact with the inner wall of the safe cabinet body (1).

4. A shelf for a biological safety cabinet as defined in claim 1, wherein: The inside of the sliding rod (9) is provided with an arc-shaped groove (7).

5. A shelf for a biological safety cabinet as defined in claim 1, wherein: The bottom of the safe cabinet body (1) is fixedly connected with a support frame (2), and one side of the top of the safe cabinet body (1) is fixedly connected with a vacuum tube (6).

6. A shelf for a biological safety cabinet as defined in claim 1, wherein: The middle of the front side of the safe cabinet body (1) is fixedly connected with a control panel (5).

7. A shelf for a biological safety cabinet as defined in claim 1, wherein: The bottom of the front side of the safe cabinet body (1) is provided with an opening (15), and the adjusting rod (3) penetrates through the opening (15).

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