Anti-pinch device for automatic door of ventilation cabinet

Abstract

The utility model discloses a fume hood automatic door anti-pinch device which comprises a hood body and a window arranged on the hood body, an automatic lifting door is connected to the window in a sliding mode, an inductor used for anti-pinch protection is arranged on the automatic lifting door, and the fume hood automatic door anti-pinch device further comprises an installation assembly arranged at the lower end of the automatic lifting door and used for installation and connection of the inductor. The automatic lifting door is provided with an overturning protection assembly used for automatic overturning protection of the inductor after the automatic lifting door ascends. According to the anti-pinch device for the automatic door of the ventilation cabinet, in the ascending process of the automatic lifting door, the inductor is driven to overturn towards the interior of the mounting groove through the overturning protection assembly, the induction side of the inductor faces the interior of the mounting groove, the induction side of the inductor is protected, and the safety of the automatic door is improved. The probability of dust adsorption and damage on the induction side of the inductor is reduced, and subsequent stable anti-pinch protection use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fume hoods, in particular to an anti-pinch device for automatic doors of fume hoods. Background Art

[0002] When the fume hood is in use, the automatic lifting door automatically rises and falls, which facilitates the quick opening and closing of the window on the auxiliary cabinet. During the descent of the automatic lifting door, the sensor at the bottom of the automatic lifting door senses and identifies objects below, thereby playing an anti-pinch protection role. However, during the anti-pinch protection process, the sensing side of the sensor below the automatic lifting door is exposed after the sensor rises, which is prone to dust absorption and even impact damage, affecting the subsequent stable anti-pinch protection use.

[0003] Therefore, there is an urgent need for an anti-pinch device for the automatic door of a fume hood to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-pinch device for an automatic door of a fume hood to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fume hood automatic door anti-pinch device, comprising a cabinet body and a window opened on the cabinet body, an automatic lifting door being slidably connected to the window, a sensor for anti-pinch protection being provided on the automatic lifting door, and an installation component being provided at the lower end of the automatic lifting door for sensor installation and connection, a flip protection component being provided on the automatic lifting door for automatic flip protection of the sensor after the automatic lifting door rises.

[0006] The mounting assembly includes a mounting frame fixed to the lower end of the automatic lifting door, the mounting frame is provided with a mounting groove for installing a sensor, a mounting shaft is rotatably connected to the mounting groove, one end of the mounting shaft is fixed to one side of the sensor, and a reset assembly is provided on the mounting groove for resetting the sensor after flipping.

[0007] The rollover protection assembly includes a fixed frame fixed on one side of the mounting frame, a rotating shaft is rotatably connected to the fixed frame, a gear is fixed to one end of the rotating shaft, a rack for meshing with the gear is fixed on the vertical inner wall of the window, and the rotating shaft and the mounting shaft are connected through a transmission assembly.

[0008] The transmission assembly includes pulleys fixed on the installation shaft and the rotating shaft, and the two pulleys are driven by a belt.

[0009] The reset assembly includes a rotating shaft rotatably connected to the mounting frame, one end of the rotating shaft is fixed to one side of the sensor, and a baffle is fixed to the other end of the rotating shaft. A torsion spring is sleeved on the outside of the rotating shaft, and both ends of the torsion spring are respectively connected to the outside of the mounting frame and the baffle.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] The utility model provides an anti-pinch device for the automatic door of a fume hood. When the automatic lifting door is rising, the protective component is flipped to drive the sensor to flip toward the inside of the installation slot, so that the sensing side of the sensor faces the inside of the installation slot, thereby protecting the sensing side of the sensor, reducing the probability of dust absorption and damage on the sensing side of the sensor, and facilitating subsequent stable anti-pinch protection use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the installation component, transmission component and reset component of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the rollover protection assembly of the present utility model;

[0015] Figure 4 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0016] Figure 5 for Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0017] In the figure: 101, cabinet; 102, window; 103, automatic lifting door; 104, sensor; 201, mounting frame; 202, mounting slot; 203, mounting shaft; 301, fixed frame; 302, rotating shaft; 303, gear; 304, rack; 401, pulley; 402, belt; 501, rotating shaft; 502, baffle; 503, spring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-5The utility model provides an anti-pinch device for an automatic door of a fume hood, comprising a cabinet body 101 and a window 102 provided on the cabinet body 101, an automatic lifting door 103 being slidably connected to the window 102, a sensor 104 for anti-pinch protection being provided on the automatic lifting door 103, and a mounting assembly provided at the lower end of the automatic lifting door 103 for mounting and connecting the sensor 104, a rollover protection assembly being provided on the automatic lifting door 103 for automatically rolling over the sensor 104 after the automatic lifting door 103 rises;

[0020] It should be noted here that: during the rising process of the automatic lifting door 103, the protective component is flipped over, driving the sensor 104 to flip toward the inside of the installation slot 202, so that the sensing side of the sensor 104 faces the inside of the installation slot 202, thereby protecting the sensing side of the sensor 104 and reducing the chance of dust absorption and damage on the sensing side of the sensor 104, which facilitates the subsequent stable anti-pinch protection use.

[0021] The mounting assembly includes a mounting frame 201 fixed to the lower end of the automatic lift door 103. The mounting frame 201 is provided with a mounting slot 202 for mounting the sensor 104. A mounting shaft 203 is rotatably connected to the mounting slot 202. One end of the mounting shaft 203 is fixed to one side of the sensor 104. A reset assembly is provided on the mounting slot 202 for resetting the sensor 104 after flipping.

[0022] It should be noted that the sensor 104 can be rotatably installed by the mounting groove 202 and the mounting shaft 203 on the mounting frame 201 .

[0023] The rollover protection assembly includes a fixed frame 301 fixed to one side of the mounting frame 201. A rotating shaft 302 is rotatably connected to the fixed frame 301. A gear 303 is fixed to one end of the rotating shaft 302. A rack 304 is fixed to the vertical inner wall of the window 102 for meshing with the gear 303. The rotating shaft 302 is connected to the mounting shaft 203 via a transmission assembly.

[0024] It should be noted here that: as the automatic lifting door 103 and the mounting frame 201 rise, the gear 303 and the rack 304 engage with each other, and the rotating shaft 302 is driven to rotate through the mutual engagement transmission between the gear 303 and the rack 304. During the rotation of the rotating shaft 302, the transmission between the belt 402 and the two sets of pulleys 401 drives the mounting shaft 203 to rotate. Through the rotation of the mounting shaft 203, the sensor 104 is driven to flip toward the inside of the mounting groove 202, so that the sensing side of the sensor 104 faces the inside of the mounting groove 202.

[0025] The transmission assembly includes pulleys 401 fixed on the mounting shaft 203 and the rotating shaft 302, and the transmission between the two pulleys 401 is transmitted through a belt 402;

[0026] It should be noted that during the rotation of the rotating shaft 302 , the installation shaft 203 is driven to rotate through the transmission between the belt 402 and the two sets of pulleys 401 .

[0027] The reset assembly includes a shaft 501 rotatably connected to the mounting frame 201. One end of the shaft 501 is fixed to one side of the sensor 104. The other end of the shaft 501 is fixed to a baffle 502. A torsion spring 503 is sleeved on the outside of the shaft 501. The two ends of the torsion spring 503 are respectively connected to the outside of the mounting frame 201 and the baffle 502.

[0028] It should be noted here that: during the rotation of the sensor 104, the rotating shaft 501 is driven to rotate. During the rotation of the rotating shaft 501, the baffle 502 drives the torsion spring 503 to be deformed and generate elastic force. The elastic force of the torsion spring 503 facilitates the subsequent reset rotation of the auxiliary sensor 104.

[0029] Working principle: When the fume hood is in use, the automatic lifting door 103 is driven to automatically lift and lower, assisting the opening and closing operation of the window 102;

[0030] When the automatic lifting door 103 is lowered, the sensor 104 inside the mounting frame 201 identifies objects below the automatic lifting door 103, thereby providing an anti-pinch protection effect when the fume hood is in use.

[0031] During the rising process of the automatic lifting door 103, as the automatic lifting door 103 and the mounting frame 201 rise, the gear 303 is meshed with the rack 304. The mutual meshing transmission between the gear 303 and the rack 304 drives the rotating shaft 302 to rotate. During the rotation of the rotating shaft 302, the transmission between the belt 402 and the two sets of pulleys 401 drives the mounting shaft 203 to rotate. The rotation of the mounting shaft 203 drives the sensor 104 to flip toward the inside of the mounting groove 202, so that the sensing side of the sensor 104 faces the inside of the mounting groove 202, thereby protecting the sensing side of the sensor 104, reducing the probability of dust absorption and damage on the sensing side of the sensor 104, and facilitating the subsequent stable anti-pinch protection use.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A fume hood automatic door anti-pinch device, comprising: A cabinet (101) and a window (102) provided on the cabinet (101), wherein an automatic lifting door (103) is slidably connected to the window (102), and a sensor (104) for anti-pinch protection is provided on the automatic lifting door (103); It is characterized by further comprising: A mounting assembly is arranged at the lower end of the automatic lifting door (103) for mounting and connecting the sensor (104), and a rollover protection assembly is arranged on the automatic lifting door (103) for automatically protecting the sensor (104) from automatic rollover after the automatic lifting door (103) rises.

2. The fume hood automatic door anti-pinch device according to claim 1, characterized in that: The mounting assembly comprises a mounting frame (201) fixed to the lower end of the automatic lifting door (103); a mounting groove (202) for mounting the sensor (104) is provided on the mounting frame (201); a mounting shaft (203) is rotatably connected to the mounting groove (202); one end of the mounting shaft (203) is fixed to one side of the sensor (104); and a reset assembly for resetting the sensor (104) after flipping is provided on the mounting groove (202).

3. The anti-pinch device for automatic doors of fume hoods according to claim 2, characterized in that: The rollover protection assembly comprises a fixed frame (301) fixed to one side of the installation frame (201); a rotating shaft (302) is rotatably connected to the fixed frame (301); a gear (303) is fixed to one end of the rotating shaft (302); a rack (304) for meshing and transmitting with the gear (303) is fixed to the vertical inner wall of the window (102); and the rotating shaft (302) and the installation shaft (203) are connected via a transmission assembly.

4. The anti-pinch device for automatic doors of fume hoods according to claim 3, characterized in that: The transmission assembly comprises a pulley (401) fixed on the mounting shaft (203) and the rotating shaft (302), and transmission is carried out between the two pulleys (401) via a belt (402).

5. The anti-pinch device for automatic doors of fume hoods according to claim 2, characterized in that: The reset assembly comprises a rotating shaft (501) rotatably connected to the mounting frame (201), one end of the rotating shaft (501) is fixed to one side of the sensor (104), the other end of the rotating shaft (501) is fixed with a baffle (502), the outer side of the rotating shaft (501) is sleeved with a torsion spring (503), and the two ends of the torsion spring (503) are respectively connected to the outer side of the mounting frame (201) and the baffle (502).

Images