Anti-falling locking mechanism and fume hood
Patent Information
- Application Number
- CN202522328059.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-03
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-03
AI Technical Summary
[0004]基于此，本实用新型的目的是提供一种防坠落锁止机构及通风柜，以解决背景技术中通风柜的移门具有坠落的隐患，移门坠落会导致实验人员受伤、实验设备损坏，存在严重安全风险的技术问题
在本实用新型提供的防坠落锁止机构中，通过将装配主体设置为与移门同步移动，使得装配主体可以跟随移门的移动而移动，同时在本申请中，锁止机构包括用于设置在柜体上锁止带以及用于设置在装配主体上的弹性连动组件，并且弹性连动组件中有一连动件部分位置与装配主体弹性连接后与同步带连接，有另一连动件的部分位置与装配主体转动连接后用于朝向装配主体的边缘延展出卡接区域，具体是指，由现有技术中同步带对移门施加拉力改为同步带对一连动件施加拉力，以此保障移门的正常运行，同时由于一连动件被同步带拉住，使得一连动件与另一连动件之间的传动作用，使得卡接区域位于装配主体的内部，当同步带发生断裂时，移门将迅速坠落，使得对应的连动件也将失去拉力，利用一连动件的弹性复位，使得另一连动件的卡接区域可以朝向锁止带的方向移动，以实现对移门的坠落锁止，通过改设置，能够解决背景技术中通风柜的移门具有坠落的隐患，移门坠落会导致实验人员受伤、实验设备损坏，存在严重安全风险的技术问题。
Smart Images
Figure CN224919050U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fume hood technology, specifically to a fall prevention locking mechanism and a fume hood. Background Technology
[0002] Laboratory fume hoods are key local exhaust ventilation devices used in laboratories to control harmful gases, vapors, dust, or fumes. They exhaust these gases outdoors or circulate them through a forced ventilation system. The core objective is to protect laboratory personnel from harmful substances while preventing laboratory environmental pollution.
[0003] Currently, most laboratory sliding doors use synchronous belts for transmission to achieve the lifting and lowering of the doors. However, during long-term use, synchronous belts are subject to frequent stretching, wear, aging and other factors, making them prone to breakage. Once the synchronous belt breaks, the sliding door will fall rapidly under the action of gravity, which may result in injury to laboratory personnel and damage to laboratory equipment, posing a serious safety risk. Utility Model Content
[0004] Based on this, the purpose of this utility model is to provide a fall-prevention locking mechanism and a fume hood to solve the technical problem in the background art where the sliding door of the fume hood has the potential to fall, which can lead to injury to experimental personnel and damage to experimental equipment, posing a serious safety risk.
[0005] This utility model provides a fall-prevention locking mechanism for use in a fume hood. The locking mechanism is used to lock the sliding door of the fume hood when it falls. The fume hood also includes a cabinet body and a timing belt. The locking mechanism includes an assembly body for moving synchronously with the sliding door, a locking band for being disposed on the cabinet, and an elastic linkage component for being disposed on the assembly body. The elastic linkage assembly includes at least two linkage members, and the ends of the two linkage members that are close to each other are rotatably connected to each other. One of the linkage components is elastically connected to the assembly body and then connected to the timing belt; another linkage component is rotatably connected to the assembly body and then extends a snap-fit area toward the edge of the assembly body. When the timing belt breaks, the elastic reset of the corresponding linkage drives the other linkage to rotate around the pivot point, causing the locking area to move toward the locking belt to lock the sliding door.
[0006] Furthermore, the elastic linkage assembly includes a first linkage member and a second linkage member that are rotatably connected to each other.
[0007] Furthermore, the elastic linkage assembly also includes an elastic element, and the portion of the first linkage element away from the second linkage element is elastically connected to the assembly body via the elastic element and then connected to the timing belt.
[0008] Furthermore, after the second linkage is rotatably connected to the assembly body at a position away from the first linkage, a snap-fit area extends toward the edge of the assembly body.
[0009] Furthermore, the assembly body is also provided with a cavity for the first and second linkage components to move.
[0010] Furthermore, the locking mechanism also includes a connector with a binding notch, the connector being rotatably connected to the first linkage member; The binding notch is used to connect with the timing belt.
[0011] Furthermore, the locking band is provided with multiple locking notches, each of which is used to lock and limit the engagement area.
[0012] Furthermore, the plurality of locking notches are spaced apart along the length direction of the locking band.
[0013] Furthermore, the locking mechanism is detachably connected to the fume hood.
[0014] Another aspect of this utility model is to provide a fume hood, which includes a cabinet body, a synchronous belt, a sliding door, and the aforementioned anti-fall locking mechanism.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: In the anti-fall locking mechanism provided by this utility model, the assembly body is configured to move synchronously with the sliding door, allowing the assembly body to move along with the sliding door. Furthermore, in this application, the locking mechanism includes a locking band for mounting on the cabinet and an elastic linkage assembly for mounting on the assembly body. One linkage component is elastically connected to the assembly body and then connected to the synchronous band, while another linkage component is rotatably connected to the assembly body and extends towards the edge of the assembly body to form a locking area. Specifically, the existing technology of applying tension to the sliding door using the synchronous band is replaced by the synchronous band applying tension to one linkage component. This design ensures the normal operation of the sliding door. Simultaneously, because one linkage is held in place by the synchronous belt, the transmission between the two linkages causes the locking area to be located inside the assembly body. When the synchronous belt breaks, the sliding door will fall rapidly, causing the corresponding linkage to lose tension. Utilizing the elastic reset of one linkage, the locking area of the other linkage can move towards the locking belt, thus preventing the sliding door from falling. This modification solves the technical problem in the background art where the sliding door of the fume hood poses a risk of falling, which could lead to injury to laboratory personnel and damage to experimental equipment, resulting in serious safety risks. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the anti-fall locking mechanism in one embodiment of the present invention; Figure 2 This is a perspective view of an elastic linkage component in one embodiment of the present invention; Figure 3 This is a schematic diagram of the overall structure of the fume hood in one embodiment of the present invention.
[0017] In the diagram: 100, sliding door; 200, cabinet; 300, synchronous belt; 400, locking mechanism; 410, assembly body; 411, cavity; 420, locking belt; 421, locking notch; 430, elastic linkage assembly; 431, first linkage; 432, second linkage; 4321, snap-fit area; 433, elastic element; 440, connector; 441, binding notch. Detailed Implementation
[0018] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.
[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0021] First Embodiment Please see Figures 1-3 The diagram shows a fall-prevention locking mechanism in one embodiment of the present invention, applied to a fume hood. The locking mechanism 400 is used to lock the sliding door 100 in the fume hood when it falls. The fume hood also includes a cabinet body 200 and a timing belt 300. It should be noted that in this example, the fume hood is not limited to the sliding door 100, cabinet body 200 and timing belt 300 shown in this example. It may also include other components constituting the fume hood. Since other components are conventional prior art in this field, they will not be specifically described here.
[0022] Specifically, in the embodiment, the locking mechanism 400 includes an assembly body 410 for moving synchronously with the sliding door 100, a locking band 420 for being disposed on the cabinet 200, and an elastic linkage component 430 for being disposed on the assembly body 410. The elastic linkage assembly 430 includes at least two linkage members, and the ends of the two linkage members that are close to each other are rotatably connected to each other. One linker is elastically connected to the assembly body 410 and then connected to the timing belt 300. Another linker is rotatably connected to the assembly body 410 and then used to extend the snap-fit area 4321 toward the edge of the assembly body 410. When the timing belt 300 breaks, the elastic reset of the corresponding linkage drives the other linkage to rotate around the pivot point, so that the locking area 4321 moves toward the locking belt 420 to lock the sliding door 100.
[0023] In specific implementation, the assembly body 410 shown in this example is configured to move synchronously with the sliding door 100, so that the assembly body 410 can move along with the sliding door 100. In this application, the locking mechanism 400 includes a locking band 420 for mounting on the cabinet 200 and an elastic linkage component 430 for mounting on the assembly body 410. One linker portion of the elastic linkage component 430 is elastically connected to the assembly body 410 and then connected to the synchronous band 300, while another linker portion is rotatably connected to the assembly body 410 and extends a latching area 4321 towards the edge of the assembly body 410. Specifically, the synchronous band 300 applying tension to the sliding door 100 in the prior art is replaced by the synchronous band 300 applying tension to one... The linkage applies tension to ensure the normal operation of the sliding door 100. At the same time, because one linkage is pulled by the synchronous belt 300, the transmission between the one linkage and the other linkage causes the locking area 4321 to be located inside the assembly body 410. When the synchronous belt 300 breaks, the sliding door 100 will fall rapidly, causing the corresponding linkage to lose tension. By utilizing the elastic reset of one linkage, the locking area 4321 of the other linkage can move towards the locking belt 420 to lock the sliding door 100 from falling. By modifying the design, the technical problem in the background art that the sliding door 100 of the fume hood has the potential to fall, and that the falling of the sliding door 100 will cause injury to experimental personnel and damage to experimental equipment, posing a serious safety risk, can be solved.
[0024] Please see Figure 1 As shown, in some preferred embodiments, the elastic linkage assembly 430 includes a first linkage 431 and a second linkage 432 that are rotatably connected to each other, and the elastic linkage assembly 430 also includes an elastic element 433. The portion of the first linkage 431 away from the second linkage 432 is elastically connected to the assembly body 410 through the elastic element 433 and then connected to the synchronous belt 300. It should be noted that the elastic element 433 can be a spring in the prior art.
[0025] Furthermore, after the second linkage 432 is rotatably connected to the assembly body 410 at a position away from the first linkage 431, a snap-fit area 4321 extends toward the edge of the assembly body 410.
[0026] Since the first linkage 431 and the second linkage 432 are both assembled inside the main body of the device, in order to ensure the flexibility of the first linkage 431 and the second linkage 432, in this example, the main body 410 is also provided with a cavity 411 for the first linkage 431 and the second linkage 432 to move.
[0027] In some other preferred embodiments, in order to ensure that the timing belt 300 can be connected to the first linkage 431, in this example, the locking mechanism 400 further includes a connector 440 with a binding notch 441, the connector 440 being rotatably connected to the first linkage 431, and the binding notch 441 being used to connect to the timing belt 300.
[0028] To ensure that the sliding door 100 has anti-fall features at all positions, in this example, the locking strip 420 is provided with multiple locking notches 421. Each locking notch 421 is used to lock and limit the engagement area 4321. Specifically, the multiple locking notches 421 are spaced apart along the length of the locking strip 420. In other words, multiple locking notches 421 can provide anti-fall protection for multiple positions of the sliding door 100.
[0029] In summary, the fall-prevention locking mechanism of this utility model has at least the following beneficial effects: In the anti-fall locking mechanism provided by this utility model, by setting the assembly body 410 to move synchronously with the sliding door 100, the assembly body 410 can move along with the sliding door 100. In this application, the locking mechanism 400 includes a locking band 420 for mounting on the cabinet 200 and an elastic linkage component 430 for mounting on the assembly body 410. One linker of the elastic linkage component 430 is elastically connected to the assembly body 410 and then connected to the synchronous band 300. Another linker is rotatably connected to the assembly body 410 and extends a latching area 4321 towards the edge of the assembly body 410. Specifically, the synchronous band 300 applying tension to the sliding door 100 in the prior art is replaced by the synchronous band 300. A tension is applied to one of the linkages to ensure the normal operation of the sliding door 100. At the same time, because the linkage is pulled by the synchronous belt 300, the transmission between the linkage and the other linkage causes the locking area 4321 to be located inside the assembly body 410. When the synchronous belt 300 breaks, the sliding door 100 will fall rapidly, causing the corresponding linkage to lose tension. By utilizing the elastic reset of the linkage, the locking area 4321 of the other linkage can move towards the locking belt 420 to lock the sliding door 100 from falling. By modifying the design, the technical problem in the background art that the sliding door 100 of the fume hood has the potential to fall, and that the falling of the sliding door 100 will cause injury to experimental personnel and damage to experimental equipment, posing a serious safety risk, can be solved.
[0030] Second Embodiment Please see Figures 1-3The image shows a fume hood in one embodiment of the present invention. The fume hood includes a cabinet body 200, a timing belt 300, a sliding door 100, and the anti-fall locking mechanism in the first embodiment described above. It should be noted that in this example, the fume hood is not limited to the sliding door 100, cabinet body 200, and timing belt 300 shown in this example. It may also include other components constituting the fume hood. Since other components are conventional prior art in this field, they will not be specifically described here.
[0031] In summary, the fume hood provided in this embodiment has at least the following beneficial effects: In the fume hood provided by this utility model, the assembly body 410 is configured to move synchronously with the sliding door 100, so that the assembly body 410 can move along with the sliding door 100. In this application, the locking mechanism 400 includes a locking band 420 for mounting on the cabinet 200 and an elastic linkage component 430 for mounting on the assembly body 410. One linker portion of the elastic linkage component 430 is elastically connected to the assembly body 410 and then connected to the synchronous band 300, while another linker portion is rotatably connected to the assembly body 410 and extends a latching area 4321 towards the edge of the assembly body 410. Specifically, the synchronous band 300 applying tension to the sliding door 100 in the prior art is replaced by the synchronous band 300 applying tension to one door. The linkage applies tension to ensure the normal operation of the sliding door 100. At the same time, because one linkage is pulled by the synchronous belt 300, the transmission between the one linkage and the other linkage causes the locking area 4321 to be located inside the assembly body 410. When the synchronous belt 300 breaks, the sliding door 100 will fall rapidly, causing the corresponding linkage to lose tension. By utilizing the elastic reset of one linkage, the locking area 4321 of the other linkage can move towards the locking belt 420 to lock the sliding door 100 from falling. By modifying the design, the technical problem in the background art that the sliding door 100 of the fume hood has the potential to fall, and that the falling of the sliding door 100 will cause injury to experimental personnel and damage to experimental equipment, posing a serious safety risk, can be solved.
[0032] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0033] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A fall-prevention locking mechanism, characterized in that, Applied to a fume hood, the locking mechanism is used to lock the sliding door of the fume hood in case it falls, wherein the fume hood also includes a cabinet body and a timing belt; The locking mechanism includes an assembly body for moving synchronously with the sliding door, a locking band for being disposed on the cabinet, and an elastic linkage component for being disposed on the assembly body. The elastic linkage assembly includes at least two linkage members, and the ends of the two linkage members that are close to each other are rotatably connected to each other. One of the linkage components is elastically connected to the assembly body and then connected to the timing belt; another linkage component is rotatably connected to the assembly body and then extends a snap-fit area toward the edge of the assembly body. When the timing belt breaks, the elastic reset of the corresponding linkage drives the other linkage to rotate around the pivot point, causing the locking area to move toward the locking belt to lock the sliding door.
2. The anti-fall locking mechanism according to claim 1, characterized in that: The elastic linkage assembly includes a first linkage and a second linkage that are rotatably connected to each other.
3. The anti-fall locking mechanism according to claim 2, characterized in that: The elastic linkage assembly further includes an elastic element, and the portion of the first linkage element away from the second linkage element is elastically connected to the assembly body via the elastic element and then connected to the timing belt.
4. The anti-fall locking mechanism according to claim 2, characterized in that: After the second linkage is rotatably connected to the assembly body at a position away from the first linkage, a snap-fit area extends toward the edge of the assembly body.
5. The anti-fall locking mechanism according to claim 2, characterized in that: The assembly body is also provided with a cavity for the first and second linkage components to move.
6. The fall arresting mechanism according to claim 2, characterized in that: The locking mechanism further includes a connector with a binding notch, the connector being rotatably connected to the first linkage member; The binding notch is used to connect with the timing belt.
7. The fall arresting mechanism according to claim 1, characterized in that: The locking band has multiple locking notches, each of which is used to lock and limit the engagement area.
8. The fall arresting mechanism according to claim 7, characterized in that: The plurality of locking notches are spaced apart along the length of the locking band.
9. The anti-fall locking mechanism according to claim 1, characterized in that: The locking mechanism is detachably connected to the fume hood.
10. A fume hood, characterized in that, The fume hood includes a cabinet body, a synchronous belt, a sliding door, and a fall arrest mechanism as described in any one of claims 1-9.