Automatic door system and ventilation cabinet

Abstract

The utility model discloses an automatic door system and a fume cupboard, the automatic door system comprises a window capable of reciprocating along a first direction, and the window comprises a side part and a bottom part; the anti-pinch detection part comprises a controller and a sensor assembly, the sensor assembly is arranged at the bottom, and the controller is connected with the sensor assembly; the conductive synchronous belt comprises a first end and a second end, the first end extends in the first direction and is arranged on the side portion, the first end is connected with the sensor assembly, and the second end is connected with the controller and used for being connected with the balance weight portion. According to the utility model, the sensor assembly does not need to be connected through a cable, and does not depend on a preset special guide channel for accommodating the cable, so that the device can be widely adapted to various types of fume hoods, and the cost can be saved.

Description

Technical Field

[0001] The utility model relates to the field of fume hoods, and particularly to an automatic door system and a fume hood. Background Art

[0002] Traditional fume hoods usually adopt a vertically lifting window structure with manual operation, which has problems such as low operation efficiency and potential safety hazards. Although the automatic door systems gradually introduced in the industry in recent years have improved in terms of operation convenience and safety protection, there are still deficiencies.

[0003] Existing automatic door systems usually are equipped with an infrared pair - type anti - pinch device, and its sensor assembly is connected to the controller through a cable. This cable needs to adjust the length change during the lifting and lowering of the window. For example, the cable needs to contract or stretch as the window goes up and down. Therefore, it is usually necessary to preset a special guiding channel in the cabinet body of the fume hood. Although this design can avoid cable entanglement to a certain extent, there are significant adaptation limitations: for existing fume hoods without pre - installed special channels, or cabinets with non - standard structures, there are often difficulties in cable storage during installation.

[0004] For the above - mentioned adaptation limitations, the current solution is to let the cable hang freely in the inner area of the window. This installation method has multiple technical defects: 1) The cable is exposed to a corrosive experimental gas environment for a long time, accelerating material aging; 2) During the movement of the cable, it is prone to mechanical interference with the equipment inside the cabinet, and the cable body is easily entangled, squeezed, and pulled, resulting in damage. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problem of large adaptation limitations of the automatic door system in the prior art. The utility model provides an automatic door system that does not need to connect the sensor assembly through a cable, does not rely on a preset special guiding channel to accommodate the cable, can avoid additional slotting on the fume hood, can be widely adapted to various types of fume hoods, and can save costs.

[0006] To solve the above - mentioned technical problems, an embodiment of the utility model discloses an automatic door system, including:

[0007] A window that can reciprocate in a first direction, the window including a side part and a bottom part;

[0008] An anti - pinch detection part, including a controller and a sensor assembly, the sensor assembly is arranged on the bottom part, and the controller is connected to the sensor assembly;

[0009] A conductive synchronous belt, including a first end and a second end, the first end extends along the first direction and is arranged on the side part, the first end is connected to the sensor assembly, the second end is connected to the controller, and the second end is used to connect to a counterweight part.

[0010] With the above technical solution, on the one hand, the first end of the conductive synchronous belt extends along the first direction and is connected to the side of the window. The first end is connected to the sensor assembly, and the sensor assembly is arranged at the bottom of the window. Therefore, the synchronous belt can reciprocate along the first direction synchronously with the window.

[0011] On the other hand, the second end of the conductive synchronous belt is simultaneously connected to the controller and the counterweight part. That is, the conductive synchronous belt provided by the above technical solution can not only play the role of connecting the window and the counterweight part, balance the weight of the window through the counterweight part, and prevent the window from accidentally falling, but also play the role of connecting the sensor assembly and the controller instead of the cable. When the sensor assembly detects that there is a foreign object (such as the body part of an operator) below the window, the controller receives a blocking signal to stop the motor from rotating, thereby stopping the window from descending. Since the sensor assembly and the controller are not connected by a cable, there is no need to preset a dedicated guide channel to accommodate the cable, and there is no need to additionally open a slot on the fume hood, which can be widely adapted to various types of fume hoods and can save costs.

[0012] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an automatic door system. The conductive synchronous belt includes a rubber layer and a reinforcing layer. The reinforcing layer includes a plurality of conductive support parts. The plurality of conductive support parts are spaced apart and embedded in the rubber layer. A plurality of first protrusions are spaced apart on one side of the rubber layer. Two adjacent first protrusions form a first engagement groove for engaging with a synchronous pulley.

[0013] With the above technical solution, a plurality of conductive support parts form a reinforcing layer. The plurality of conductive support parts are spaced apart and embedded in the rubber layer, which can bear the gravity of the counterweight part and the window. The conductive support parts themselves have the function of conducting electricity. Therefore, while having good tensile support performance, they can also play the role of transmitting electrical signals between the controller and the sensor assembly. In addition, a plurality of first protrusions are spaced apart on one side of the rubber layer. Two adjacent first protrusions form a first engagement groove for engaging with a synchronous pulley, which can make the conductive synchronous belt move more smoothly when following the window reciprocatingly and will not be damaged due to mechanical friction.

[0014] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an automatic door system. The conductive support part includes a steel wire.

[0015] With the above technical solution, the conductive support part includes a steel wire, which has low cost and can take into account both conductive performance and support performance.

[0016] According to another specific embodiment of the present utility model, an embodiment of the present utility model discloses an automatic door system, which includes a first terminal and a second terminal. One end of the first terminal is connected to the end of the first end, and the other end is connected to the sensor assembly. One end of the second terminal is connected to the end of the second end, and the other end is connected to the controller.

[0017] With the above technical solution, by connecting the first terminal to the sensor assembly and the second terminal to the controller, efficient installation and disassembly can be achieved, and it is convenient to flexibly arrange the position of the conductive synchronous belt according to the actual position of the fume hood and other requirements.

[0018] According to another specific embodiment of the present utility model, an embodiment of the present utility model discloses an automatic door system, which includes a clamping member. The clamping member is sleeved on the second end, and the end of the second end is used to pass through the clamping member. The second terminal is arranged above the clamping member, and a first bending portion is formed below the clamping member at the second end. The first bending portion is used to connect to the counterweight portion.

[0019] With the above technical solution, the second terminal is arranged above the clamping member, and a first bending portion is formed below the clamping member at the second end. The first bending portion is used to connect to the counterweight portion. Therefore, the connection between the second terminal and the controller will not be interfered by the counterweight portion, and the bending degree of the first bending portion can be flexibly adjusted to adapt to different counterweight portions. For example, along the first direction, when the clamping member is arranged at a position on the second end far from the counterweight portion, the bending degree of the first bending portion is large, and the reserved space for connecting the counterweight portion is larger; on the contrary, when the clamping member is arranged at a position on the second end close to the counterweight portion, the bending degree of the first bending portion is small, and the reserved space for connecting the counterweight portion is relatively reduced.

[0020] According to another specific embodiment of the present utility model, an embodiment of the present utility model discloses an automatic door system. The sensor assembly includes an emitter, a receiver, and a first connecting wire. Along the second direction, the emitter and the receiver are opposite and spaced apart on the bottom. The emitter includes a first connection end and a second connection end. One end of the first connecting wire is connected to the receiver, and the other end is inserted into the first connection end. The other end of the first terminal is inserted into the second connection end.

[0021] With the above technical solution, the emitter includes a first connection end and a second connection end. One end of the first connecting wire is connected to the receiver, and the other end is inserted into the first connection end. The first terminal of the conductive synchronous belt only needs to be connected to the emitter, that is, communication connection with both the emitter and the receiver can be achieved through one conductive synchronous belt. There is no need to arrange multiple conductive synchronous belts, which can simplify the structural design of the automatic door system and reduce costs.

[0022] According to another specific embodiment of the present utility model, an embodiment of the present utility model discloses an automatic door system. The side portion includes a first cavity that penetrates the side portion along the first direction, and the bottom portion includes a second cavity that penetrates the bottom portion along the second direction. The first connection line is disposed in the second cavity, and a portion of the first end disposed in the first cavity is attached to the cavity wall of the first cavity.

[0023] By adopting the above technical solution, the side portion includes a first cavity, and a portion of the first end disposed in the first cavity is attached to the cavity wall of the first cavity, which can further increase the stability of the connection between the first end and the side portion, and the first cavity can also provide protection for the conductive synchronous belt. At the same time, the bottom portion includes a second cavity that penetrates the bottom portion along the second direction, and the first connection line is disposed in the second cavity. By fully utilizing the first cavity to arrange the conductive synchronous belt and the second cavity to arrange the first connection line, it is possible to prevent the conductive synchronous belt and the first connection line from being exposed outside, improving safety and aesthetics.

[0024] An embodiment of the present utility model also discloses a fume hood, comprising:

[0025] The automatic door system in any of the above embodiments;

[0026] A cabinet body, and the viewing window is disposed on the front surface of the cabinet body;

[0027] A counterweight portion is disposed on the back surface of the cabinet body, and the counterweight portion is connected to the second end of the conductive synchronous belt. Along the first direction, when the viewing window moves upward, the counterweight portion moves downward, and when the viewing window moves downward, the counterweight portion moves upward.

[0028] By adopting the above technical solution, a counterweight portion is disposed on the back surface of the fume hood, a viewing window is disposed on the front surface, and the viewing window and the counterweight portion are connected by a conductive synchronous belt, which can not only balance the weight of the viewing window and prevent the viewing window from accidentally falling, but also play the role of connecting the sensor assembly and the controller instead of the cable, without worrying about the cable being corroded by the pollutants in the fume hood, effectively saving costs and simplifying the structure of the fume hood.

[0029] According to another specific embodiment of the present utility model, an embodiment of the present utility model discloses a fume hood, comprising a first synchronous pulley and a second synchronous pulley. The cabinet body includes a side plate, and the first synchronous pulley and the second synchronous pulley are spaced apart along a third direction on the side plate, and one side of the rubber layer of the conductive synchronous belt provided with a plurality of first protrusions meshes with the first synchronous pulley and the second synchronous pulley.

[0030] With the above technical solution, the first synchronous pulley and the second synchronous pulley are arranged at intervals along the third direction on the side plate of the cabinet body, and one side of the rubber layer of the conductive synchronous belt, which is provided with a plurality of first protrusions, meshes with the first synchronous pulley and the second synchronous pulley, enabling the counterweight part and the window to move synchronously and avoiding the wear of the conductive synchronous belt caused by the interference of mechanical friction.

[0031] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a fume hood, which includes a second connecting wire. The second connecting wire includes a first part, a second part, and a third part. The first part is attached to the top surface of the cabinet body, the second part is attached to the back surface, and the third part is attached to the side surface of the counterweight part.

[0032] With the above technical solution, the first part is attached to the top surface of the cabinet body, the second part is attached to the back surface, and the third part is attached to the side surface of the counterweight part. In this way, on the one hand, it can make the arrangement of the second connecting wire more regular and beautiful, and on the other hand, it can prevent the second connecting wire from being loosely hung on the fume hood and being squeezed and pulled during the movement of the counterweight part.

[0033] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a fume hood. A second bending part is included between the second part and the third part. When the counterweight part reciprocates along the first direction, the second bending part is used to prevent the first part and the second part from being pulled by external forces.

[0034] With the above technical solution, there is a second bending part between the second part and the third part. The second bending part is a redundant design. When the counterweight part reciprocates along the first direction, the second bending part can be used to prevent the first part and the second part from being pulled by external forces. For example, when the counterweight part moves downward along the first direction, the second part moves downward with the counterweight part until the second bending part is straightened. During this period, the first part and the second part can remain stationary and will not be pulled by external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Shows a front three-dimensional schematic diagram of the fume hood provided by the embodiment of the present application.

[0036] Figure 2 Shows a back three-dimensional schematic diagram of the fume hood provided by the embodiment of the present application.

[0037] Figure 3 Shows a motor drive block diagram of the automatic door system provided by the embodiment of the present application.

[0038] Figure 4 Shows a front view of the fume hood provided by the embodiment of the present application.

[0039] Figure 5 Shows a three-dimensional schematic diagram of the automatic door system provided by the embodiments of the present application.

[0040] Figure 6 Shows a three-dimensional schematic diagram of the conductive synchronous belt of the automatic door system provided by the embodiments of the present application.

[0041] Figure 7 Shows the Figure 2 Partial enlarged view of the automatic door system at the A-A position in

[0042] Figure 8 Shows a schematic diagram of the second connecting wire of the automatic door system provided by the embodiments of the present application.

[0043] Figure 9 Shows a schematic diagram of the pressing piece of the automatic door system provided by the embodiments of the present application.

[0044] Figure 10 Shows a connection schematic diagram of the terminal of the automatic door system provided by the embodiments of the present application.

[0045] Figure 11 Shows the Figure 10 Partial enlarged view of the connection schematic diagram of the terminal at the C-C position in

[0046] Figure 12 Shows the Figure 5 Partial enlarged view of the automatic door system at the B-B position in

[0047] Figure 13 Shows the Figure 7 Partial enlarged view at the D-D position in Detailed implementation manners

[0048] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiments, this does not mean that the features of this invention are limited to this implementation manner. On the contrary, the purpose of introducing the invention in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present invention. To provide a deep understanding of the present invention, many specific details will be included in the following description. The present invention can also be implemented without these details. In addition, to avoid confusing or obscuring the key points of the present invention, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0049] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0050] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is habitually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0051] Terms such as "first", "second", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0052] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and defined, terms such as "set", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific situations.

[0053] To make the objectives, technical solutions and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below with reference to the drawings.

[0054] In the deployment of the automatic door system in the prior art, the sensor component and the controller need to transmit signals through a spiral cable. Such cables usually need to be accommodated in a dedicated channel prefabricated in the cabinet body to ensure their orderly expansion and contraction during the lifting and lowering of the window and avoid entanglement. However, this solution highly depends on the preset structure of the fume hood, resulting in limited applicability: for old model cabinets without reserved channels or cabinets with non-standard designs, since dedicated channels cannot be opened secondly, the placement of the cable has become an urgent problem to be solved.

[0055] The applicant has discovered through exploration that in practice, in the aforementioned scenario, the cable is often forced to be directly suspended in the operation area inside the window. This method has significant hidden dangers: on the one hand, the cable is exposed to the corrosive environment for a long time, which will exacerbate the aging of the cable; on the other hand, the cable lacks restraint during dynamic operation and is easy to collide or entangle with the instruments inside the cabinet, leading to the risk of breakage.

[0056] Based on this, with reference to Figure 1 、 Figure 2, embodiments of the present application provide a fume hood, which includes an automatic door system 10, a cabinet 20, and a counterweight portion 30. Among them, a ventilation system 21 is provided inside the cabinet 20. The cabinet 20 includes a front surface 201, a back surface 202, side surfaces 203, and a top surface 204. The ventilation opening 211 of the ventilation system 21 is provided on the top surface 204. The fume hood is generally rectangular parallelepiped-shaped. The upper part of the fume hood is a working chamber 22, and the lower part of the fume hood includes a storage cabinet 23. An operation portion 24 is provided between the working chamber 22 and the storage cabinet 23. The operation portion 24 includes a socket 241 and a knob 242 for controlling the operation of the ventilation system and the like.

[0057] Exemplarily, the automatic door system 10 includes a viewing window 11, an anti-pinch detection portion 12, and a conductive synchronous belt 13. The viewing window 11 is provided on the front surface 201 of the cabinet 20 and covers the opening of the working chamber 22. The counterweight portion 30 is provided on the back surface 202 of the cabinet 20. The counterweight portion 30 is connected to the conductive synchronous belt 13. Along the first direction Z, when the viewing window 11 moves upward, the counterweight portion 30 moves downward, and when the viewing window 11 moves downward, the counterweight portion 30 moves upward. In the embodiments of the present application, the first direction Z refers to the height direction of the cabinet 20, that is, the direction perpendicular to the ground. The second direction X in the following text refers to the length direction of the cabinet 20, and the third direction Y refers to the width direction of the cabinet 20. The front surface 201 and the back surface 202 of the cabinet 20 are spaced apart and oppositely arranged along the third direction Y.

[0058] In some embodiments, refer to Figure 1 , Figure 2 , Figure 3 , the automatic door system 10 further includes a motor for driving the viewing window 11 to reciprocate along the first direction Z. After the fume hood is installed with the automatic door system 10, when the user opens and closes the viewing window 11, the user only needs to manually lift it upward or gently pull it downward for a short distance, and the viewing window 11 can automatically open to the set height or close to the minimum opening. It can save the time for opening and closing the viewing window 11 and improve work efficiency. When the anti-pinch detection portion 12 detects that there is a foreign object below the viewing window 11, the motor receives a blocking signal and stops running, and the viewing window 11 stops descending, which can prevent pinching of foreign objects.

[0059] Exemplarily, the automatic door system 10 further includes a monitoring sensor. The monitoring sensor is communicatively connected to the motor. The monitoring sensor is used to monitor whether there is anyone in front of the viewing window 11. Within the set time range, when the monitoring sensor detects that there is no one in front of the cabinet 20, the motor receives a window-closing signal, and the viewing window 11 will automatically descend, reducing the leakage of pollutants in the cabinet to the laboratory room. At the same time, when the viewing window 11 is closed, the required exhaust air volume is also greatly reduced, which can save the operating energy consumption of the fume hood. It can be understood that the monitoring sensor can be an infrared sensor, a millimeter-wave radar sensor, etc., and the present application does not limit this.

[0060] In some embodiments, refer to Figure 2, Figure 3 , Figure 4 The window 11 includes a side portion 111 and a bottom portion 112. The anti-pinch detection unit 12 includes a controller 121 and a sensor assembly 122. The sensor assembly 122 is disposed at the bottom portion 112. The controller 121 is connected to the sensor assembly 122. The controller 121 is spaced apart from the vent 211 and disposed on the top surface 204. The conductive synchronous belt 13 includes a first end 131 and a second end 132. The first end 131 extends along a first direction Z and is disposed at the side portion 111. The first end 131 is connected to the sensor assembly 122. The second end 132 is connected to the controller 121. The second end 132 is used to connect to the counterweight portion 30.

[0061] By adopting the above technical solution, on the one hand, the first end 131 of the conductive timing belt 13 extends along the first direction Z and is arranged on the side 111 of the window 11, the first end 131 is connected to the sensor component 122, and the sensor component 122 is arranged at the bottom 112 of the window 11, so that the conductive timing belt 13 can reciprocate along the first direction Z synchronously with the window 11.

[0062] On the other hand, the second end 132 of the conductive synchronous belt 13 is connected to the controller 121 and the counterweight part 30 at the same time, that is, the conductive synchronous belt 13 provided by the above technical solution can not only play the role of connecting the window 11 and the counterweight part 30, balancing the weight of the window 11 through the counterweight part 30 to prevent the window 11 from accidentally falling, but also can replace the cable to play the role of connecting the sensor component 122 and the controller 121. When the sensor component 122 detects that there is a foreign object (such as the operator's body part) under the window 11, the controller 121 receives a blocking signal to stop the motor from rotating, thereby stopping the window 11 from descending. Since the sensor component 122 and the controller 121 are not connected by a cable, there is no need to preset a special guide channel to accommodate the cable, and there is no need to make a groove on the fume hood. It can be widely adapted to various types of fume hoods and can save costs.

[0063] It is understandable that the embodiment of the present application does not limit the number of conductive synchronous belts 13. For example Figure 5 As shown, when the fume hood includes two counterweights 30, the two counterweights 30 are spaced apart on the back side 202 along the second direction X. At this time, the automatic door system includes two conductive synchronous belts 13, and the first end 131 of each conductive synchronous belt 13 is correspondingly extended along the first direction Z and arranged on the left and right sides 111 of the window 11, which are used to connect with the sensor assembly 122, and the second end 132 can be connected with the controller 121.

[0064] In some embodiments, see Figure 4 , Figure 5 , Figure 6, the conductive synchronous belt 13 includes a rubber layer 133 and a reinforcing layer 134. The reinforcing layer 134 includes a plurality of conductive support portions 1341. The plurality of conductive support portions 1341 are spaced apart and embedded in the rubber layer 133. For the sake of easy understanding, Figure 6 in the figure, the rubber layer 133 is not shown outside some of the conductive support portions 1341. A plurality of first protrusions 1331 are provided at intervals on one side of the rubber layer 133. Two adjacent first protrusions 1331 form a first engagement groove 1332 for engaging with the synchronous pulley. Exemplarily, along the first direction Z and the third direction Y, the extension lengths of the conductive support portion 1341 and the rubber layer 133 are equal, and the conductive support portion 1341 is wrapped and provided inside the rubber layer 133.

[0065] Exemplarily, the number of the first protrusions 1331 is not limited in the embodiments of the present application. It is only necessary to form a rack structure on one side of the rubber layer 133. The rubber layer 133 can be made of insulating materials such as polyurethane or neoprene, and the present application does not limit this. In the embodiments of the present application, the transmission element between the counterweight portion 30 and the window 11 of the fume hood is used as a wire (such as the reinforcing layer 134 in the conductive synchronous belt 13) to realize the electrical connection between the sensor assembly 122 and the controller 121, saving the use of cables and solving the problems of cable routing and the requirement for the cable to be compressed or stretched synchronously when the window 11 moves up and down.

[0066] Exemplarily, the conductive support portion 1341 includes steel wires. 6 steel wires are arranged in parallel and at intervals to form the reinforcing layer 134. It can be understood that the number of the steel wires is not limited in the embodiments of the present application. For example, it can be 1, 2, 3, 4, 5, 7, 8, 9, 10, etc. And the material of the conductive support portion 1341 is not limited in the embodiments of the present application. For example, it can also be a conductive material such as copper-clad steel material or carbon fiber composite material. The conductive synchronous belt 13 provided by the embodiments of the present application is formed by an insulating rubber layer 133 and the conductive support portions 1341 provided in the rubber layer 133. On the one hand, the rubber layer 133 can transmit power between the counterweight portion 30 and the window 11. The conductive support portions 1341 spaced apart and embedded in the rubber layer 133 can improve the load-bearing capacity of the conductive synchronous belt 13, that is, enable the rubber layer 133 to bear a greater load and ensure that the rubber layer 133 will not be deformed due to overload.

[0067] On the other hand, the rubber layer 133 can provide protection for the conductive support portions 1341, which can not only avoid safety problems such as electric leakage, but also prevent the conductive support portions 1341 from being worn. And the conductive support portions 1341 arranged in parallel and at intervals will not intersect to generate a short-circuit phenomenon, further improving the safety performance of the conductive synchronous belt 13.

[0068] In some embodiments, refer to Figure 5 、 Figure 6 、 Figure 7, the fume hood includes a first synchronous pulley 41 and a second synchronous pulley 42. The cabinet body 20 includes a side plate 25. The first synchronous pulley 41 and the second synchronous pulley 42 are arranged at intervals along the third direction Y on the side plate 25. One side of the rubber layer 133 of the conductive synchronous belt 13, which is provided with a plurality of first protrusions 1331, meshes with the first synchronous pulley 41 and the second synchronous pulley 42. Exemplarily, along the first direction Z, the height of the side plate 25 is greater than the height of the top surface 204. Along the third direction Y, the first synchronous pulley 41 is arranged on one side of the side plate 25 close to the front surface 201, and the second synchronous pulley 42 is arranged on one side of the side plate 25 close to the back surface 202. The embodiments of the present application do not limit the number of synchronous pulleys. For example, one, two, three, four, five or other numbers of synchronous pulleys can also be arranged between the first synchronous pulley 41 and the second synchronous pulley 42.

[0069] In some embodiments, referring to Figure 5 , Figure 6 , Figure 7 , the fume hood includes a second connecting line 50. The second connecting line 50 includes a first part 51, a second part 52 and a third part 53. The first part 51 is attached to the top surface 204 of the cabinet body 20, the second part 52 is attached to the back surface 202, and the third part 53 is attached to the side surface of the counterweight part 30. Exemplarily, as shown in combination with Figure 9 , pressing pieces 60 are provided on both the back surface 202 and the side surface of the counterweight part 30. The pressing piece 60 includes a first fixed end 61 and a second fixed end 62. The first fixed end 61 and the second fixed end 62 are detachably connected to the back surface 202. There is a wire groove 63 between the first fixed end 61 and the second fixed end 62. The second connecting line 50 is threaded through the wire groove 63. In this way, on the one hand, the arrangement of the second connecting line 50 can be made more regular and beautiful, and on the other hand, it can prevent the second connecting line 50 from being loosely suspended on the fume hood and being squeezed and pulled during the movement of the counterweight part 30.

[0070] Exemplarily, the radius of the wire groove 63 is slightly smaller than the diameter of the second connecting line 50, which is used to press the second part 52 against the back surface 202 and press the third part 53 against the side surface of the counterweight part 30, so that the second connecting line 50 can be more firmly arranged on the back surface 202 and the counterweight part 30.

[0071] In some embodiments, referring to Figure 5 , Figure 6 , Figure 7, a second bending portion 54 is included between the second part 52 and the third part 53. When the counterweight portion 30 reciprocates in the first direction Z, the second bending portion 54 is configured to prevent the first part 51 and the second part 52 from being pulled by external forces. The second bending portion 54 is a redundant design. When the counterweight portion 30 reciprocates in the first direction Z, the second bending portion 54 can be used to prevent the first part 51 and the second part 52 from being pulled by external forces. When the counterweight portion 30 moves downward in the first direction Z, the second part 52 moves downward together with the counterweight portion 30 until the second bending portion 54 is straightened; when the counterweight portion 30 moves upward in the first direction Z, the second part 52 moves upward together with the counterweight portion 30, increasing the bending degree of the second bending portion 54. During this period, the first part 51 and the second part 52 can remain stationary and will not be pulled by external forces.

[0072] Exemplarily, the embodiments of the present application do not limit the type of the second connection line 50. For example Figure 8 as shown, the first part 51 of the second connection line 50 can also be a spiral line. In this case, the second bending portion 54 may not be provided between the second part 52 and the third part 53.

[0073] In some embodiments, refer to Figure 6 , Figure 7 , Figure 10 , the automatic door system 10 includes a first terminal 14 and a second terminal 15. One end of the first terminal 14 is connected to the end of the first end 131, and the other end is connected to the sensor assembly 122. One end of the second terminal 15 is connected to the end of the second end 132, and the other end is connected to the controller 121. Exemplarily, one end of the first terminal 14 is welded to the end of the first end 131, and the other end is inserted into the sensor assembly 122. One end of the second terminal 15 is welded to the end of the second end 132, and the other end is inserted into the controller 121. In this way, efficient installation and disassembly can be achieved, and it is convenient to flexibly arrange the position of the conductive synchronous belt 13 according to the actual position of the fume hood and other requirements.

[0074] In some embodiments, refer to Figure 10 , Figure 11 and in combination with Figure 5, the sensor assembly 122 includes an emitter 1221, a receiver 1222, and a first connection line 1223. Along the second direction X, the emitter 1221 and the receiver 1222 are opposite to each other and spaced apart on the bottom 112. The emitter 1221 includes a first connection end 12211 and a second connection end 12212. One end of the first connection line 1223 is connected to the receiver 1222, and the other end is inserted into the first connection end 12211. The other end of the first wiring terminal 14 is inserted into the second connection end 12212. It can achieve efficient installation and disassembly, and is convenient for flexibly arranging the position of the conductive synchronous belt 13 according to the actual position of the fume hood and other requirements. For example, by adopting the above technical solution, only one conductive synchronous belt 13 needs to be arranged to achieve simultaneous connection with the emitter 1221 and the receiver 1222, which can reduce costs.

[0075] Exemplarily, when the automatic door system includes two conductive synchronous belts 13, the emitter 1221 includes a first connection end 12211, the receiver 1222 includes a second connection end 12212, and the first end 131 of each conductive synchronous belt 13 is respectively connected to the first connection end 12211 and the second connection end 12212.

[0076] Exemplarily, the type of the sensor assembly 122 is an infrared opposed sensor, that is, the emitter 1221 is used to emit infrared rays, and the receiver 1222 is used to receive infrared rays. When there is no foreign object on the bottom 112, an infrared ray path is formed between the emitter 1221 and the receiver 1222. When there is a foreign object blocking on the bottom 112, for example, the body part of the user is located below the bottom 112, blocking the infrared ray path. At this time, the receiver 1222 cannot receive infrared rays and sends a blocking signal to the controller 121, and the controller 121 controls the motor to stop running, so as to stop the window from descending, realizing the automatic anti-pinch function. It can be understood that the embodiments of the present application do not limit the type of the sensor assembly 122.

[0077] In some embodiments, referring to Figure 12 and combining with Figure 5 , the side part 111 includes a first cavity 1111, the first cavity 1111 penetrates the side part 111 along the first direction Z, the bottom 112 includes a second cavity 1121, the second cavity 1121 penetrates the bottom 112 along the second direction X, the first connection line 1223 is arranged in the second cavity 1121, and the part of the first end 131 arranged in the first cavity 1111 is attached to the cavity wall 11111 of the first cavity 1111. It can be understood that the embodiments of the present application do not depend on the setting of the cavity. For example, when the side part 111 is a solid setting, the first end 131 can be attached to the side surface 203 of the side part 111, and there will be no situation such as wire entanglement. Exemplarily, a pressing piece 60 is provided on the cavity wall 11111 of the first cavity 1111 for attaching the first end 131 to the cavity wall 11111.

[0078] In some embodiments, referring to Figure 13 and in combination with Figure 7 , the automatic door system 10 includes a clamping member 16. The clamping member 16 is sleeved on the second end 132. The end of the second end 132 is used to pass through the clamping member 16. The second terminal 15 is disposed above the clamping member 16. The second end 132 forms a first bending portion 1321 below the clamping member 16. The first bending portion 1321 is used to connect to the counterweight portion 30. Exemplarily, the clamping member 16 is a ferrule, that is, the clamping member 16 is annularly arranged. The counterweight portion 30 includes a connecting member 31. The connecting member 31 is disposed on the top surface 204 of the counterweight portion 30. The connecting member 31 includes a connecting hole 311. During assembly, along the first direction Z, the second end 132 passes downward through the clamping member 16 and the connecting hole 311 in sequence, and then the second end 132 passes upward through the clamping member 16 again, so that the second terminal 15 is located above the clamping member 16. At this time, the second end 132 forms a first bending portion 1321 below the clamping member 16. The first bending portion 1321 and the connecting member 31 are hooked to each other to form a chain structure. Exemplarily, the connecting member 31 is L-shaped. The embodiments of the present application do not limit the shape of the connecting member 31.

[0079] Although the present invention has been illustrated and described by referring to certain preferred embodiments thereof, those of ordinary skill in the art should understand that the above content is a further detailed description of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. An automatic door system, characterized in that, Comprising: A window that can reciprocate in a first direction, the window including a side portion and a bottom portion; An anti-pinch detection portion, including a controller and a sensor assembly, the sensor assembly being disposed on the bottom portion, and the controller being connected to the sensor assembly; A conductive synchronous belt, including a first end and a second end, the first end extending in the first direction and being disposed on the side portion, the first end being connected to the sensor assembly, the second end being connected to the controller, and the second end being used for connection to a counterweight portion.

2. The automatic door system according to claim 1, wherein The conductive synchronous belt includes a rubber layer and a reinforcing layer, the reinforcing layer including a plurality of conductive support portions, the plurality of conductive support portions being spaced apart and embedded in the rubber layer, and a plurality of first protrusions being spaced apart on one side of the rubber layer, and adjacent two of the first protrusions forming a first engagement groove for engagement with a synchronous pulley.

3. The automatic door system according to claim 2, wherein The conductive support portion includes steel wires.

4. The automatic door system according to any one of claims 1 to 3, characterized in that Including a first wiring terminal and a second wiring terminal, one end of the first wiring terminal being connected to the end of the first end, the other end being connected to the sensor assembly, one end of the second wiring terminal being connected to the end of the second end, and the other end being connected to the controller.

5. The automatic door system according to claim 4, wherein, Including a clamping member, the clamping member being sleeved on the second end, the end of the second end being used for passing through the clamping member, the second wiring terminal being disposed above the clamping member, and the second end forming a first bending portion below the clamping member, and the first bending portion being used for connection to the counterweight portion.

6. The automatic door system according to claim 4, characterized in that, The sensor assembly includes an emitter, a receiver, and a first connection wire. Along a second direction, the emitter and the receiver are opposite to each other and spaced apart on the bottom portion. The emitter includes a first connection end and a second connection end. One end of the first connection wire is connected to the receiver, the other end is inserted into the first connection end, and the other end of the first wiring terminal is inserted into the second connection end.

7. The automatic door system according to claim 6, characterized in that, The side portion includes a first cavity that penetrates the side portion in the first direction, the bottom portion includes a second cavity that penetrates the bottom portion in the second direction, the first connection wire is disposed in the second cavity, and the portion of the first end disposed in the first cavity is attached to the cavity wall of the first cavity.

8. A fume hood, characterized in that, Comprising: An automatic door system according to any one of claims 1-7; A cabinet body, the window being disposed on the front surface of the cabinet body; A counterweight portion, disposed on the back surface of the cabinet body, the counterweight portion being connected to the second end of the conductive synchronous belt. Along the first direction, when the window moves upward, the counterweight portion moves downward, and when the window moves downward, the counterweight portion moves upward.

9. The fume hood according to claim 8, characterized in that, Including a second connection wire, the second connection wire including a first portion, a second portion, and a third portion. The first portion is attached to the top surface of the cabinet body, the second portion is attached to the back surface, and the third portion is attached to the side surface of the counterweight portion.

10. The fume hood according to claim 9, characterized in that, A second bending portion is included between the second portion and the third portion. When the counterweight portion reciprocates in the first direction, the second bending portion is used to prevent the first portion and the second portion from being pulled by an external force.

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