Anti-falling device for ventilation cabinet
By installing a fall prevention device in the fume hood, and utilizing the cooperation of the follower plate and the lifting plate, the sliding door is prevented from falling when the transmission component breaks, thus solving the problem of insufficient safety of the fume hood and achieving higher safety.
Patent Information
- Application Number
- CN202520077758.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-01-14
AI Technical Summary
The sliding doors of existing fume hoods are prone to falling when the transmission components break, posing a safety hazard. Current technology cannot effectively solve this problem.
A fall protection device, including a follower plate and a lifting plate, is installed in the fume hood. The fall protection plate is inserted into a hole to prevent the sliding door from falling. The lifting plate and the fall protection plate are moved by a belt to prevent the sliding door from falling if the transmission parts break.
It effectively prevents sliding doors from falling, improves the safety of fume hoods, and protects the safety of operators.
Smart Images
Figure CN223629205U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of laboratory supplies, and relates to a cabinet body for a laboratory, in particular to a falling-prevention device for a fume hood. BACKGROUND
[0002] Fume hoods are often used in laboratories to enhance the circulation of air in the laboratory and reduce air pollution in the laboratory. In the prior art, a fume hood comprises a cabinet body, and one end of the cabinet body in the front-rear direction is connected with a liftable sliding door. The sliding door is connected with a transmission member, which is generally a belt or a chain. The transmission member is lifted and lowered along with the sliding door. When operating, the ventilation condition of the fume hood is adjusted by adjusting the position of the sliding door. If the transmission member is broken, the sliding door will fall under the action of gravity. The operator below the sliding door cannot dodge in time and will be injured by the falling sliding door. The safety is not high. SUMMARY
[0003] This section is intended to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name. Such simplifications or omissions cannot be used to limit the scope of the utility model.
[0004] In view of the above and / or existing problems in the fume hood, the utility model is proposed.
[0005] Therefore, the purpose of the utility model is to provide a falling-prevention device for a fume hood. The utility model can prevent the falling of the sliding door when the transmission member such as a belt is broken, and improve the safety of the fume hood.
[0006] To solve the above technical problems, the utility model provides the following technical scheme: a falling-prevention device for a fume hood, comprising a cabinet body, and one end of a cabinet door body in the front-rear direction is connected with a liftable sliding door. The left and right sides of the sliding door are respectively provided with a follow-up plate. The upper part of the follow-up plate is connected with a vertically arranged lifting plate. The follow-up plate is connected with a left-right movable falling-prevention plate. One end of the cabinet body relative to the follow-up plate in the left-right direction is arranged with a plurality of falling-prevention insertion holes. When not falling, the falling-prevention plate is in the follow-up plate. When falling, the falling-prevention plate slides towards the corresponding side of the falling-prevention insertion hole. The falling-prevention plate can be inserted into the falling-prevention insertion hole.
[0007] The utility model discloses, the lifting plate is fixedly connected with the belt one end in the upper end of the follow -up plate, and the other end of the belt is fixedly connected with the counterweight, and the lifting plate is driven by the belt and goes up or goes down, thereby driving the lifting of the sliding door, if the belt breaks suddenly, the relative movement between the lifting plate and the follow -up plate, the anti -falling plate is moved in the left -right direction and is driven by the lifting plate, and the left anti -falling plate inserts into the anti -falling jack in the left movement, and the right anti -falling plate inserts into the anti -falling jack in the right movement, avoid the falling of the sliding door when the belt breaks, improve the security of fume chamber use, can be applied to the structure of the sliding door in fume chamber connection.
[0008] As a preferred scheme of the anti-falling device for the fume chamber in the utility model, the lower part of the follow-up plate is detachably connected with a connecting plate for fixed connection with the sliding door, and a plurality of connecting holes are formed in the connecting plate.
[0009] As a preferred scheme of the anti-falling device for the fume chamber in the utility model, the lifting plate can slide up and down relative to the follow-up plate.
[0010] As a preferred scheme of the anti-falling device for the fume chamber in the utility model, the upper end of the follow-up plate is fixed with a sliding groove, and the lifting plate can slide up and down along the sliding groove.
[0011] As a preferred scheme of the anti-falling device for the fume chamber in the utility model, the front and rear ends of the follow-up plate are both provided with sliding openings, the lifting plate is fixedly connected with a connecting column, and the front and rear ends of the connecting column can slide up and down along the two sliding openings respectively.
[0012] As a preferred scheme of the anti-falling device for the fume chamber in the utility model, the anti-falling plate is provided with an anti-falling chute, the anti-falling chute is inclined upward from the end close to the sliding door to the end close to the anti-falling jack in the left-right direction, and the connecting column passes through the anti-falling chute in the front-rear direction.
[0013] As a preferred scheme of the anti-falling device for the fume chamber in the utility model, a return spring is connected between the lower end of the lifting plate and the connecting plate.
[0014] As a preferred scheme of the anti-falling device for the fume chamber in the utility model, the lower part of the follow-up plate is provided with a plug-in recess, the connecting plate comprises a horizontal part, the horizontal part is plugged into the plug-in recess, one side of the horizontal part in the front-rear direction is fixed with a connecting part, and the connecting part is provided with a fixing hole for connection with the follow-up plate. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and the present application is not limited to the specific embodiments disclosed below.
[0016] Figure 1 It is the overall front view of the fume hood.
[0017] Figure 2 It is the partial three-dimensional structure after the front side cover plate of the cabinet body is hidden in the present application Figure 1 .
[0018] Figure 3 It is the partial structure enlarged view after the front side cover plate of the cabinet body is hidden in the present application.
[0019] Figure 4 It is the structure diagram for realizing the anti-falling function in the cabinet body on the left side of the sliding door in the present application.
[0020] Figure 5 It is the structure diagram for realizing the anti-falling function in the cabinet body on the left side of the sliding door and setting the follower plate to the transparent state in the present application.
[0021] Figure 6 It is Figure 5 the partial enlarged view of A in the present application.
[0022] In the drawings, 100 is a sliding door, 101 is a connecting hole, 200 is a cabinet body, 300 is a fixed screw, 400 is a reset spring, 500 is a follower plate, 501 is a plug-in groove, 502 is a sliding groove, 503 is a sliding port, 504 is a sliding groove, 600 is a connecting column, 700 is a lifting plate, 800 is an anti-falling plate, 801 is an anti-falling chute, 900 is a connecting plate, 901 is a connecting part, 901a is a fixed hole, 902 is a horizontal part, and S is an anti-falling jack. DETAILED DESCRIPTION
[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings of the specification.
[0024] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited to the specific embodiments disclosed below.
[0025] Secondly, the "one embodiment" or "embodiment" referred to herein means that a specific feature, structure, or characteristic described can be included in at least one implementation of the present application. The "in one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or mutually exclusive with other embodiments.
[0026] Embodiment 1
[0027] With reference to Figure 1 and Figure 3 The embodiment provides a falling prevention device for a fume hood, which can prevent the falling of a moving door 100 when a transmission member such as a belt breaks, and improve safety.
[0028] A falling prevention device for a fume hood, comprising a cabinet body 200, one end of a cabinet door body in a front-rear direction is connected with a movable moving door 100, left and right sides of the moving door 100 are respectively provided with a follow-up plate 500, an upper part of the follow-up plate 500 is connected with a vertically arranged lifting plate 700, the follow-up plate 500 is connected with a left-right movable falling prevention plate 800, one end of the cabinet body 200 relative to the follow-up plate 500 in a left-right direction is arranged with a plurality of falling prevention insertion holes S, when not falling, the falling prevention plate 800 is in the follow-up plate 500, when falling, the falling prevention plate 800 slides towards a direction corresponding to the falling prevention insertion hole S, and the falling prevention plate 800 can be inserted into the falling prevention insertion hole S.
[0029] In the utility model, one end of the lifting plate 700 above the follow-up plate 500 is fixedly connected with one end of a lifting belt, and the other end of the lifting belt is fixedly connected with a counterweight; during operation, the lifting plate 700 is driven by the lifting belt to move upwards or downwards, thereby driving the moving door 100 to move upwards or downwards; if the lifting belt suddenly breaks, the lifting plate 700 and the follow-up plate 500 move relatively, the lifting plate 700 drives the falling prevention plate 800 to move in the left-right direction, the left falling prevention plate 800 moves leftwards and is inserted into the falling prevention insertion hole S, and the right falling prevention plate 800 moves rightwards and is inserted into the right falling prevention insertion hole S, so that the falling of the moving door 100 caused by the breaking of the lifting belt is avoided, and the safety of the fume hood is improved; the falling prevention device can be applied to a structure for connecting the moving door 100 in the fume hood.
[0030] Embodiment 2
[0031] With reference to Figures 2-6 The embodiment is based on embodiment 1, and differs from embodiment 1 in that the embodiment provides a falling prevention device for a fume hood, which can further prevent the falling of a moving door 100 when a transmission member breaks.
[0032] Specifically, the lifting plate 700 can slide up and down relative to the follower plate 500, the upper end of the follower plate 500 is fixed with a sliding groove 502, the lifting plate 700 can slide up and down along the sliding groove 502, the front and rear ends of the follower plate 500 are both opened with a sliding opening 503, the lifting plate 700 is fixedly connected with a connecting column 600, the front and rear ends of the connecting column 600 can slide up and down along the two sliding openings 503 respectively, the follower plate 500 is opened with a sliding groove 504 penetrating in the left-right direction, the anti-falling plate 800 is slidably connected to the follower plate 500 through the sliding groove 504, the anti-falling plate 800 is opened with an anti-falling chute 801, the anti-falling chute 801 is inclined upward from the end close to the sliding door 100 to the end close to the anti-falling jack S in the left-right direction, the connecting column 600 penetrates the anti-falling chute 801 in the front-rear direction, and the lower end of the lifting plate 700 and the follower plate 500 are connected with a return spring 400.
[0033] Under normal circumstances, the upper end of the connecting column 600 abuts against the anti-falling plate 800 at the upper end of the anti-falling chute 801, the anti-falling plate 800 is retracted in the sliding groove 504, and the return spring 400 is in a stretched state. If the transmission member breaks, initially, the lifting plate 700 rapidly moves downward under the action of the return spring 400, the lifting plate 700 and the follower plate 500 have a relative downward movement in the height direction, the lifting plate 700 drives the connecting column 600 to move downward, the connecting column 600 drives the anti-falling plate 800 to rapidly move toward the direction of the anti-falling jack S through the anti-falling chute 801, and the anti-falling plate 800 is inserted into the anti-falling jack S, thereby avoiding the downward movement of the follower plate 500 and preventing the falling of the sliding door 100, and improving the safety of the fume hood.
[0034] Embodiment 3
[0035] With reference to Figure 4 and Figure 5 , this embodiment is based on embodiment 2, and differs from embodiment 2 in that the anti-falling device for the fume hood can further facilitate the connection between the sliding door 100 and the follower plate 500.
[0036] Specifically, the lower part of the follower plate 500 is detachably connected with a connecting plate 900 for fixedly connecting with the sliding door 100, and the connecting plate 900 is opened with a plurality of connecting holes 101 for facilitating the connection with the sliding door 100.
[0037] The left and right ends of the sliding door 100 are respectively opened with a plurality of mounting holes corresponding to the connecting holes 101, and fastening screws are screwed into the mounting holes and the connecting holes 101 to fixedly connect the sliding door 100 to the front side of the connecting plate 900.
[0038] Specifically, the lower part of the follow-up plate 500 is provided with a plug-in groove 501, the connecting plate 900 comprises a horizontal part 902, the horizontal part 902 is plugged into the plug-in groove 501, one side of the horizontal part 902 in the front-rear direction is fixed with a connecting part 901, the connecting part 901 is provided with a fixing hole 901a for facilitating the connection with the follow-up plate 500, the follow-up plate 500 is provided with a screw hole coaxial with the fixing hole 901a.
[0039] When the connecting plate 900 is installed on the follow-up plate 500, the horizontal part 902 is inserted into the plug-in groove 501 to realize the preliminary positioning of the connecting plate 900, the position of the connecting plate 900 is adjusted to make the fixing hole 901a coaxial with the screw hole, the fixing screw 300 is screwed into the fixing hole 901a and the screw hole, the fixing screw 300 is pressed on the front side of the connecting part 901 to realize the fixed connection between the connecting plate 900 and the follow-up plate 500, and the connection is convenient.
[0040] Preferably, the lower end of the reset spring 400 is connected to the fixing screw 300 on the front side of the connecting part 901.
[0041] In the application, the front-rear direction is the direction perpendicular to the paper surface, and the left-right direction is the horizontal direction perpendicular to the front-rear direction.
[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application, although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and all of them should be covered in the scope of the claims of the present application.
Claims
1. A falling protection device for a fume hood, comprising a cabinet body (200), one end of the cabinet door body in the front-rear direction is connected with a liftable sliding door (100), characterized in that: The application relates to a sliding door (100) with a falling-prevention function, which comprises two follower plates (500) arranged on the left and right sides of the sliding door (100) respectively, the upper part of each follower plate (500) is connected with a vertically arranged lifting plate (700), the follower plate (500) is connected with a left-right movable falling-prevention plate (800), the cabinet body (200) is arranged with a plurality of falling-prevention insertion holes (S) at one end of the follower plate (500) in the left-right direction, when not falling, the falling-prevention plate (800) is in the follower plate (500), when falling, the falling-prevention plate (800) slides towards the direction of the corresponding side falling-prevention insertion hole (S), and the falling-prevention plate (800) can be inserted into the falling-prevention insertion hole (S).
2. The fume hood anti-fall device according to claim 1, wherein: The lower part of the follower plate (500) is detachably connected with a connecting plate (900) used for fixed connection with the sliding door (100), and a plurality of connecting holes (101) are formed in the connecting plate (900).
3. The fume hood anti-fall device of claim 1, wherein: The lifting plate (700) can slide up and down relative to the follower plate (500).
4. The fume hood anti-fall device according to claim 3, wherein: The upper end of the follower plate (500) is fixed with a sliding groove (502), and the lifting plate (700) can slide up and down along the sliding groove (502).
5. The fume hood anti-fall device according to claim 4, wherein: The front and rear ends of the follower plate (500) are both provided with sliding openings (503), the lifting plate (700) is fixedly connected with a connecting column (600), and the front and rear ends of the connecting column (600) can slide up and down along the two sliding openings (503) respectively.
6. The fume hood anti-fall device of claim 5, wherein: The falling-prevention plate (800) is provided with a falling-prevention inclined groove (801), the falling-prevention inclined groove (801) is inclined upwards from the end close to the sliding door (100) to the end close to the falling-prevention insertion hole (S) in the left-right direction, and the connecting column (600) penetrates the falling-prevention inclined groove (801) in the front-rear direction.
7. A fall arrest device for a fume hood as claimed in any one of claims 2 to 6, wherein: The lower end of the lifting plate (700) is connected with the connecting plate (900) through a reset spring (400).
8. A fall arrest device for a fume hood as claimed in any one of claims 2 to 6, wherein: The lower part of the follower plate (500) is provided with an insertion sinking groove (501), the connecting plate (900) comprises a horizontal part (902), the horizontal part (902) is inserted into the insertion sinking groove (501), one side of the horizontal part (902) in the front-rear direction is fixed with a connecting part (901), and the connecting part (901) is provided with a fixing hole (901a) for connection with the follower plate (500).